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gtk2/gtk/gtknotebook.c
Matthias Clasen e8b830a3dd dragsource: Reshuffle api a bit 
Remove arguments from the constructor.

For actions, we now default to COPY, which is the most common one
that we should enable by default (MOVE requires handling deletion
on the the source side, and ASK only makes sense if we have
multiple actions).

For the content provider, we add a new ::prepare signal where
it should be provided just-in-time.
2020-01-08 18:48:21 -05:00

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/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp:ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtknotebook.h"
#include "gtkbindings.h"
#include "gtkbox.h"
#include "gtkboxlayout.h"
#include "gtkbuildable.h"
#include "gtkbutton.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkdragdest.h"
#include "gtkeventcontrollermotion.h"
#include "gtkgestureclick.h"
#include "gtkgizmoprivate.h"
#include "gtkiconprivate.h"
#include "gtkintl.h"
#include "gtklabel.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkpopovermenuprivate.h"
#include "gtkorientable.h"
#include "gtksizerequest.h"
#include "gtkstylecontextprivate.h"
#include "gtkprivate.h"
#include "gtkstack.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetpath.h"
#include "gtkwidgetprivate.h"
#include "gtkdragsource.h"
#include "gtkwidgetpaintable.h"
#include "gtkselectionprivate.h"
#include "a11y/gtknotebookaccessible.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
/**
* SECTION:gtknotebook
* @Short_description: A tabbed notebook container
* @Title: GtkNotebook
* @See_also: #GtkContainer
*
* The #GtkNotebook widget is a #GtkContainer whose children are pages that
* can be switched between using tab labels along one edge.
*
* There are many configuration options for GtkNotebook. Among other
* things, you can choose on which edge the tabs appear
* (see gtk_notebook_set_tab_pos()), whether, if there are too many
* tabs to fit the notebook should be made bigger or scrolling
* arrows added (see gtk_notebook_set_scrollable()), and whether there
* will be a popup menu allowing the users to switch pages.
* (see gtk_notebook_popup_enable(), gtk_notebook_popup_disable())
*
* # GtkNotebook as GtkBuildable
*
* The GtkNotebook implementation of the #GtkBuildable interface
* supports placing children into tabs by specifying “tab” as the
* “type” attribute of a <child> element. Note that the content
* of the tab must be created before the tab can be filled.
* A tab child can be specified without specifying a <child>
* type attribute.
*
* To add a child widget in the notebooks action area, specify
* "action-start" or “action-end” as the “type” attribute of the
* <child> element.
*
* An example of a UI definition fragment with GtkNotebook:
* |[
* <object class="GtkNotebook">
* <child>
* <object class="GtkLabel" id="notebook-content">
* <property name="label">Content</property>
* </object>
* </child>
* <child type="tab">
* <object class="GtkLabel" id="notebook-tab">
* <property name="label">Tab</property>
* </object>
* </child>
* </object>
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* notebook
* ├── header.top
* │ ├── [<action widget>]
* │ ├── tabs
* │ │ ├── [arrow]
* │ │ ├── tab
* │ │ │ ╰── <tab label>
* ┊ ┊ ┊
* │ │ ├── tab[.reorderable-page]
* │ │ │ ╰── <tab label>
* │ │ ╰── [arrow]
* │ ╰── [<action widget>]
* │
* ╰── stack
* ├── <child>
* ┊
* ╰── <child>
* ]|
*
* GtkNotebook has a main CSS node with name notebook, a subnode
* with name header and below that a subnode with name tabs which
* contains one subnode per tab with name tab.
*
* If action widgets are present, their CSS nodes are placed next
* to the tabs node. If the notebook is scrollable, CSS nodes with
* name arrow are placed as first and last child of the tabs node.
*
* The main node gets the .frame style class when the notebook
* has a border (see gtk_notebook_set_show_border()).
*
* The header node gets one of the style class .top, .bottom,
* .left or .right, depending on where the tabs are placed. For
* reorderable pages, the tab node gets the .reorderable-page class.
*
* A tab node gets the .dnd style class while it is moved with drag-and-drop.
*
* The nodes are always arranged from left-to-right, regardless of text direction.
*/
#define SCROLL_DELAY_FACTOR 5
#define SCROLL_THRESHOLD 12
#define DND_THRESHOLD_MULTIPLIER 4
#define TIMEOUT_INITIAL 500
#define TIMEOUT_REPEAT 50
#define TIMEOUT_EXPAND 500
typedef struct _GtkNotebookPage GtkNotebookPage;
typedef enum
{
DRAG_OPERATION_NONE,
DRAG_OPERATION_REORDER,
DRAG_OPERATION_DETACH
} GtkNotebookDragOperation;
enum {
ACTION_WIDGET_START,
ACTION_WIDGET_END,
N_ACTION_WIDGETS
};
#define GTK_NOTEBOOK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_NOTEBOOK, GtkNotebookClass))
#define GTK_NOTEBOOK_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_NOTEBOOK, GtkNotebookClass))
typedef struct _GtkNotebookPrivate GtkNotebookPrivate;
typedef struct _GtkNotebookClass GtkNotebookClass;
struct _GtkNotebook
{
GtkContainer container;
GtkNotebookPrivate *priv;
};
struct _GtkNotebookClass
{
GtkContainerClass parent_class;
void (* switch_page) (GtkNotebook *notebook,
GtkWidget *page,
guint page_num);
/* Action signals for keybindings */
gboolean (* select_page) (GtkNotebook *notebook,
gboolean move_focus);
gboolean (* focus_tab) (GtkNotebook *notebook,
GtkNotebookTab type);
gboolean (* change_current_page) (GtkNotebook *notebook,
gint offset);
void (* move_focus_out) (GtkNotebook *notebook,
GtkDirectionType direction);
gboolean (* reorder_tab) (GtkNotebook *notebook,
GtkDirectionType direction,
gboolean move_to_last);
/* More vfuncs */
gint (* insert_page) (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
gint position);
GtkNotebook * (* create_window) (GtkNotebook *notebook,
GtkWidget *page);
void (* page_reordered) (GtkNotebook *notebook,
GtkWidget *child,
guint page_num);
void (* page_removed) (GtkNotebook *notebook,
GtkWidget *child,
guint page_num);
void (* page_added) (GtkNotebook *notebook,
GtkWidget *child,
guint page_num);
};
struct _GtkNotebookPrivate
{
GtkNotebookDragOperation operation;
GtkNotebookPage *cur_page;
GtkNotebookPage *detached_tab;
GdkContentFormats *source_targets;
GtkWidget *action_widget[N_ACTION_WIDGETS];
GtkWidget *menu;
GtkWidget *menu_box;
GtkWidget *stack_widget;
GtkWidget *header_widget;
GtkWidget *tabs_widget;
GtkWidget *arrow_widget[4];
GListModel *pages;
GList *children;
GList *first_tab; /* The first tab visible (for scrolling notebooks) */
GList *focus_tab;
gint drag_begin_x;
gint drag_begin_y;
gint drag_offset_x;
gint drag_offset_y;
gint drag_surface_x;
gint drag_surface_y;
gint mouse_x;
gint mouse_y;
gint pressed_button;
GQuark group;
guint dnd_timer;
guint switch_tab_timer;
GList *switch_tab;
guint32 timer;
guint child_has_focus : 1;
guint click_child : 3;
guint remove_in_detach : 1;
guint focus_out : 1; /* Flag used by ::move-focus-out implementation */
guint has_scrolled : 1;
guint need_timer : 1;
guint show_border : 1;
guint show_tabs : 1;
guint scrollable : 1;
guint tab_pos : 2;
guint rootwindow_drop : 1;
};
enum {
SWITCH_PAGE,
FOCUS_TAB,
SELECT_PAGE,
CHANGE_CURRENT_PAGE,
MOVE_FOCUS_OUT,
REORDER_TAB,
PAGE_REORDERED,
PAGE_REMOVED,
PAGE_ADDED,
CREATE_WINDOW,
LAST_SIGNAL
};
enum {
STEP_PREV,
STEP_NEXT
};
typedef enum
{
ARROW_LEFT_BEFORE,
ARROW_RIGHT_BEFORE,
ARROW_LEFT_AFTER,
ARROW_RIGHT_AFTER,
ARROW_NONE
} GtkNotebookArrow;
typedef enum
{
POINTER_BEFORE,
POINTER_AFTER,
POINTER_BETWEEN
} GtkNotebookPointerPosition;
#define ARROW_IS_LEFT(arrow) ((arrow) == ARROW_LEFT_BEFORE || (arrow) == ARROW_LEFT_AFTER)
#define ARROW_IS_BEFORE(arrow) ((arrow) == ARROW_LEFT_BEFORE || (arrow) == ARROW_RIGHT_BEFORE)
enum {
PROP_0,
PROP_TAB_POS,
PROP_SHOW_TABS,
PROP_SHOW_BORDER,
PROP_SCROLLABLE,
PROP_PAGE,
PROP_ENABLE_POPUP,
PROP_GROUP_NAME,
PROP_PAGES,
LAST_PROP
};
static GParamSpec *properties[LAST_PROP];
enum {
CHILD_PROP_0,
CHILD_PROP_TAB_LABEL,
CHILD_PROP_MENU_LABEL,
CHILD_PROP_POSITION,
CHILD_PROP_TAB_EXPAND,
CHILD_PROP_TAB_FILL,
CHILD_PROP_REORDERABLE,
CHILD_PROP_DETACHABLE,
CHILD_PROP_CHILD,
CHILD_PROP_TAB,
CHILD_PROP_MENU,
};
#define GTK_NOTEBOOK_PAGE_FROM_LIST(_glist_) ((GtkNotebookPage *)(_glist_)->data)
#define NOTEBOOK_IS_TAB_LABEL_PARENT(_notebook_,_page_) \
(g_object_get_data (G_OBJECT ((_page_)->tab_label), "notebook") == _notebook_)
struct _GtkNotebookPage
{
GObject instance;
GtkWidget *child;
GtkWidget *tab_label;
GtkWidget *menu_label;
GtkWidget *last_focus_child; /* Last descendant of the page that had focus */
GtkWidget *tab_widget; /* widget used for the tab itself */
char *tab_text;
char *menu_text;
guint default_menu : 1; /* If true, we create the menu label ourself */
guint default_tab : 1; /* If true, we create the tab label ourself */
guint expand : 1;
guint fill : 1;
guint reorderable : 1;
guint detachable : 1;
GtkRequisition requisition;
gulong mnemonic_activate_signal;
gulong notify_visible_handler;
};
typedef struct _GtkNotebookPageClass GtkNotebookPageClass;
struct _GtkNotebookPageClass
{
GObjectClass parent_class;
};
G_DEFINE_TYPE (GtkNotebookPage, gtk_notebook_page, G_TYPE_OBJECT)
static void
gtk_notebook_page_init (GtkNotebookPage *page)
{
page->default_tab = TRUE;
page->default_menu = TRUE;
page->fill = TRUE;
}
static void
gtk_notebook_page_finalize (GObject *object)
{
GtkNotebookPage *page = GTK_NOTEBOOK_PAGE (object);
g_clear_object (&page->child);
g_clear_object (&page->tab_label);
g_clear_object (&page->menu_label);
g_free (page->tab_text);
g_free (page->menu_text);
G_OBJECT_CLASS (gtk_notebook_page_parent_class)->finalize (object);
}
static void
gtk_notebook_page_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkNotebookPage *page = GTK_NOTEBOOK_PAGE (object);
switch (property_id)
{
case CHILD_PROP_CHILD:
g_set_object (&page->child, g_value_get_object (value));
break;
case CHILD_PROP_TAB:
g_set_object (&page->tab_label, g_value_get_object (value));
page->default_tab = page->tab_label == NULL;
break;
case CHILD_PROP_MENU:
g_set_object (&page->menu_label, g_value_get_object (value));
page->default_menu = page->menu_label == NULL;
break;
case CHILD_PROP_TAB_LABEL:
g_free (page->tab_text);
page->tab_text = g_value_dup_string (value);
if (page->default_tab && GTK_IS_LABEL (page->tab_label))
gtk_label_set_label (GTK_LABEL (page->tab_label), page->tab_text);
break;
case CHILD_PROP_MENU_LABEL:
g_free (page->menu_text);
page->menu_text = g_value_dup_string (value);
if (page->default_menu && GTK_IS_LABEL (page->menu_label))
gtk_label_set_label (GTK_LABEL (page->menu_label), page->menu_text);
break;
case CHILD_PROP_POSITION:
{
GtkNotebook *notebook = NULL;
if (page->tab_widget)
notebook = GTK_NOTEBOOK (g_object_get_data (G_OBJECT (page->tab_widget), "notebook"));
if (notebook)
gtk_notebook_reorder_child (notebook, page->child, g_value_get_int (value));
}
break;
case CHILD_PROP_TAB_EXPAND:
if (page->expand != g_value_get_boolean (value))
{
page->expand = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case CHILD_PROP_TAB_FILL:
if (page->fill != g_value_get_boolean (value))
{
page->fill = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case CHILD_PROP_REORDERABLE:
if (page->reorderable != g_value_get_boolean (value))
{
page->reorderable = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
case CHILD_PROP_DETACHABLE:
if (page->detachable != g_value_get_boolean (value))
{
page->detachable = g_value_get_boolean (value);
g_object_notify_by_pspec (object, pspec);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_notebook_page_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkNotebookPage *page = GTK_NOTEBOOK_PAGE (object);
switch (property_id)
{
case CHILD_PROP_CHILD:
g_value_set_object (value, page->child);
break;
case CHILD_PROP_TAB:
g_value_set_object (value, page->tab_label);
break;
case CHILD_PROP_MENU:
g_value_set_object (value, page->menu_label);
break;
case CHILD_PROP_TAB_LABEL:
g_value_set_string (value, page->tab_text);
break;
case CHILD_PROP_MENU_LABEL:
g_value_set_string (value, page->menu_text);
break;
case CHILD_PROP_POSITION:
{
GtkNotebook *notebook = NULL;
if (page->tab_widget)
notebook = GTK_NOTEBOOK (g_object_get_data (G_OBJECT (page->tab_widget), "notebook"));
if (notebook)
g_value_set_int (value, g_list_index (notebook->priv->children, page));
}
break;
case CHILD_PROP_TAB_EXPAND:
g_value_set_boolean (value, page->expand);
break;
case CHILD_PROP_TAB_FILL:
g_value_set_boolean (value, page->fill);
break;
case CHILD_PROP_REORDERABLE:
g_value_set_boolean (value, page->reorderable);
break;
case CHILD_PROP_DETACHABLE:
g_value_set_boolean (value, page->detachable);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gtk_notebook_page_class_init (GtkNotebookPageClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->finalize = gtk_notebook_page_finalize;
object_class->get_property = gtk_notebook_page_get_property;
object_class->set_property = gtk_notebook_page_set_property;
g_object_class_install_property (object_class,
CHILD_PROP_CHILD,
g_param_spec_object ("child",
P_("Child"),
P_("The child for this page"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
CHILD_PROP_TAB,
g_param_spec_object ("tab",
P_("Tab"),
P_("The tab widget for this page"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
CHILD_PROP_MENU,
g_param_spec_object ("menu",
P_("Menu"),
P_("The label widget displayed in the child’s menu entry"),
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
CHILD_PROP_TAB_LABEL,
g_param_spec_string ("tab-label",
P_("Tab label"),
P_("The text of the tab widget"),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
CHILD_PROP_MENU_LABEL,
g_param_spec_string ("menu-label",
P_("Menu label"),
P_("The text of the menu widget"),
NULL,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
CHILD_PROP_POSITION,
g_param_spec_int ("position",
P_("Position"),
P_("The index of the child in the parent"),
-1, G_MAXINT, 0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
CHILD_PROP_TAB_EXPAND,
g_param_spec_boolean ("tab-expand",
P_("Tab expand"),
P_("Whether to expand the child’s tab"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
CHILD_PROP_TAB_FILL,
g_param_spec_boolean ("tab-fill",
P_("Tab fill"),
P_("Whether the child’s tab should fill the allocated area"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
CHILD_PROP_REORDERABLE,
g_param_spec_boolean ("reorderable",
P_("Tab reorderable"),
P_("Whether the tab is reorderable by user action"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (object_class,
CHILD_PROP_DETACHABLE,
g_param_spec_boolean ("detachable",
P_("Tab detachable"),
P_("Whether the tab is detachable"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
}
static const char *src_notebook_targets [] = {
"GTK_NOTEBOOK_TAB",
"application/x-rootwindow-drop"
};
static const char *dst_notebook_targets [] = {
"GTK_NOTEBOOK_TAB"
};
/*** GtkNotebook Methods ***/
static gboolean gtk_notebook_select_page (GtkNotebook *notebook,
gboolean move_focus);
static gboolean gtk_notebook_focus_tab (GtkNotebook *notebook,
GtkNotebookTab type);
static gboolean gtk_notebook_change_current_page (GtkNotebook *notebook,
gint offset);
static void gtk_notebook_move_focus_out (GtkNotebook *notebook,
GtkDirectionType direction_type);
static gboolean gtk_notebook_reorder_tab (GtkNotebook *notebook,
GtkDirectionType direction_type,
gboolean move_to_last);
static void gtk_notebook_remove_tab_label (GtkNotebook *notebook,
GtkNotebookPage *page);
/*** GObject Methods ***/
static void gtk_notebook_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_notebook_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_notebook_finalize (GObject *object);
static void gtk_notebook_dispose (GObject *object);
/*** GtkWidget Methods ***/
static void gtk_notebook_destroy (GtkWidget *widget);
static void gtk_notebook_unmap (GtkWidget *widget);
static gboolean gtk_notebook_popup_menu (GtkWidget *widget);
static void gtk_notebook_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data);
static void gtk_notebook_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static void gtk_notebook_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static gboolean gtk_notebook_focus (GtkWidget *widget,
GtkDirectionType direction);
/*** Drag and drop Methods ***/
static void gtk_notebook_drag_begin (GtkDragSource *source,
GdkDrag *drag,
GtkWidget *widget);
static void gtk_notebook_drag_end (GtkDragSource *source,
GdkDrag *drag,
gboolean delete_data,
GtkWidget *widget);
static gboolean gtk_notebook_drag_failed (GtkDragSource *source,
GdkDrag *drag,
GdkDragCancelReason reason,
GtkWidget *widget);
static gboolean gtk_notebook_drag_motion (GtkDropTarget *dest,
int x,
int y);
static void gtk_notebook_drag_leave (GtkDropTarget *dest);
static gboolean gtk_notebook_drag_drop (GtkDropTarget *dest,
int x,
int y);
static GBytes * gtk_notebook_drag_data_get (const char *mime_type,
gpointer data);
/*** GtkContainer Methods ***/
static void gtk_notebook_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_notebook_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_notebook_set_focus_child (GtkContainer *container,
GtkWidget *child);
static GType gtk_notebook_child_type (GtkContainer *container);
static void gtk_notebook_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data);
/*** GtkNotebook Methods ***/
static gint gtk_notebook_real_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
gint position);
static GtkNotebook *gtk_notebook_create_window (GtkNotebook *notebook,
GtkWidget *page);
static void gtk_notebook_measure_tabs (GtkGizmo *gizmo,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline);
static void gtk_notebook_allocate_tabs (GtkGizmo *gizmo,
int width,
int height,
int baseline);
static void gtk_notebook_snapshot_tabs (GtkGizmo *gizmo,
GtkSnapshot *snapshot);
/*** GtkNotebook Private Functions ***/
static void gtk_notebook_real_remove (GtkNotebook *notebook,
GList *list);
static void gtk_notebook_update_labels (GtkNotebook *notebook);
static gint gtk_notebook_timer (GtkNotebook *notebook);
static void gtk_notebook_set_scroll_timer (GtkNotebook *notebook);
static gint gtk_notebook_page_compare (gconstpointer a,
gconstpointer b);
static GList* gtk_notebook_find_child (GtkNotebook *notebook,
GtkWidget *child);
static GList * gtk_notebook_search_page (GtkNotebook *notebook,
GList *list,
gint direction,
gboolean find_visible);
static void gtk_notebook_child_reordered (GtkNotebook *notebook,
GtkNotebookPage *page);
static gint gtk_notebook_insert_notebook_page (GtkNotebook *notebook,
GtkNotebookPage *page,
int position);
/*** GtkNotebook Size Allocate Functions ***/
static void gtk_notebook_pages_allocate (GtkNotebook *notebook,
int width,
int height);
static void gtk_notebook_calc_tabs (GtkNotebook *notebook,
GList *start,
GList **end,
gint *tab_space,
guint direction);
/*** GtkNotebook Page Switch Methods ***/
static void gtk_notebook_real_switch_page (GtkNotebook *notebook,
GtkWidget *child,
guint page_num);
/*** GtkNotebook Page Switch Functions ***/
static void gtk_notebook_switch_page (GtkNotebook *notebook,
GtkNotebookPage *page);
static gint gtk_notebook_page_select (GtkNotebook *notebook,
gboolean move_focus);
static void gtk_notebook_switch_focus_tab (GtkNotebook *notebook,
GList *new_child);
static void gtk_notebook_menu_switch_page (GtkWidget *widget,
GtkNotebookPage *page);
/*** GtkNotebook Menu Functions ***/
static void gtk_notebook_menu_item_create (GtkNotebook *notebook,
GtkNotebookPage *page);
static void gtk_notebook_menu_item_recreate (GtkNotebook *notebook,
GList *list);
static void gtk_notebook_menu_label_unparent (GtkWidget *widget,
gpointer data);
static void gtk_notebook_update_tab_pos (GtkNotebook *notebook);
/*** GtkNotebook Private Setters ***/
static gboolean gtk_notebook_mnemonic_activate_switch_page (GtkWidget *child,
gboolean overload,
gpointer data);
static gboolean focus_tabs_in (GtkNotebook *notebook);
static gboolean focus_child_in (GtkNotebook *notebook,
GtkDirectionType direction);
static void stop_scrolling (GtkNotebook *notebook);
static void do_detach_tab (GtkNotebook *from,
GtkNotebook *to,
GtkWidget *child);
/* GtkBuildable */
static void gtk_notebook_buildable_init (GtkBuildableIface *iface);
static void gtk_notebook_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type);
static void gtk_notebook_gesture_pressed (GtkGestureClick *gesture,
int n_press,
double x,
double y,
gpointer user_data);
static void gtk_notebook_gesture_released (GtkGestureClick *gesture,
int n_press,
double x,
double y,
gpointer user_data);
static guint notebook_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkNotebook, gtk_notebook, GTK_TYPE_CONTAINER,
G_ADD_PRIVATE (GtkNotebook)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_notebook_buildable_init))
static void
add_tab_bindings (GtkBindingSet *binding_set,
GdkModifierType modifiers,
GtkDirectionType direction)
{
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Tab, modifiers,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Tab, modifiers,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
}
static void
add_arrow_bindings (GtkBindingSet *binding_set,
guint keysym,
GtkDirectionType direction)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_binding_entry_add_signal (binding_set, keysym, GDK_CONTROL_MASK,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
gtk_binding_entry_add_signal (binding_set, keypad_keysym, GDK_CONTROL_MASK,
"move_focus_out", 1,
GTK_TYPE_DIRECTION_TYPE, direction);
}
static void
add_reorder_bindings (GtkBindingSet *binding_set,
guint keysym,
GtkDirectionType direction,
gboolean move_to_last)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_binding_entry_add_signal (binding_set, keysym, GDK_MOD1_MASK,
"reorder_tab", 2,
GTK_TYPE_DIRECTION_TYPE, direction,
G_TYPE_BOOLEAN, move_to_last);
gtk_binding_entry_add_signal (binding_set, keypad_keysym, GDK_MOD1_MASK,
"reorder_tab", 2,
GTK_TYPE_DIRECTION_TYPE, direction,
G_TYPE_BOOLEAN, move_to_last);
}
static gboolean
gtk_object_handled_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy)
{
gboolean continue_emission;
GObject *object;
object = g_value_get_object (handler_return);
g_value_set_object (return_accu, object);
continue_emission = !object;
return continue_emission;
}
static void
gtk_notebook_compute_expand (GtkWidget *widget,
gboolean *hexpand_p,
gboolean *vexpand_p)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gboolean hexpand;
gboolean vexpand;
GList *list;
GtkNotebookPage *page;
hexpand = FALSE;
vexpand = FALSE;
for (list = priv->children; list; list = list->next)
{
page = list->data;
hexpand = hexpand ||
gtk_widget_compute_expand (page->child, GTK_ORIENTATION_HORIZONTAL);
vexpand = vexpand ||
gtk_widget_compute_expand (page->child, GTK_ORIENTATION_VERTICAL);
if (hexpand & vexpand)
break;
}
*hexpand_p = hexpand;
*vexpand_p = vexpand;
}
static void
gtk_notebook_class_init (GtkNotebookClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
GtkBindingSet *binding_set;
gobject_class->set_property = gtk_notebook_set_property;
gobject_class->get_property = gtk_notebook_get_property;
gobject_class->finalize = gtk_notebook_finalize;
gobject_class->dispose = gtk_notebook_dispose;
widget_class->destroy = gtk_notebook_destroy;
widget_class->unmap = gtk_notebook_unmap;
widget_class->popup_menu = gtk_notebook_popup_menu;
widget_class->grab_notify = gtk_notebook_grab_notify;
widget_class->state_flags_changed = gtk_notebook_state_flags_changed;
widget_class->focus = gtk_notebook_focus;
widget_class->compute_expand = gtk_notebook_compute_expand;
container_class->add = gtk_notebook_add;
container_class->remove = gtk_notebook_remove;
container_class->forall = gtk_notebook_forall;
container_class->set_focus_child = gtk_notebook_set_focus_child;
container_class->child_type = gtk_notebook_child_type;
class->switch_page = gtk_notebook_real_switch_page;
class->insert_page = gtk_notebook_real_insert_page;
class->focus_tab = gtk_notebook_focus_tab;
class->select_page = gtk_notebook_select_page;
class->change_current_page = gtk_notebook_change_current_page;
class->move_focus_out = gtk_notebook_move_focus_out;
class->reorder_tab = gtk_notebook_reorder_tab;
class->create_window = gtk_notebook_create_window;
properties[PROP_PAGE] =
g_param_spec_int ("page",
P_("Page"),
P_("The index of the current page"),
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_TAB_POS] =
g_param_spec_enum ("tab-pos",
P_("Tab Position"),
P_("Which side of the notebook holds the tabs"),
GTK_TYPE_POSITION_TYPE,
GTK_POS_TOP,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_SHOW_TABS] =
g_param_spec_boolean ("show-tabs",
P_("Show Tabs"),
P_("Whether tabs should be shown"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_SHOW_BORDER] =
g_param_spec_boolean ("show-border",
P_("Show Border"),
P_("Whether the border should be shown"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_SCROLLABLE] =
g_param_spec_boolean ("scrollable",
P_("Scrollable"),
P_("If TRUE, scroll arrows are added if there are too many tabs to fit"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_ENABLE_POPUP] =
g_param_spec_boolean ("enable-popup",
P_("Enable Popup"),
P_("If TRUE, pressing the right mouse button on the notebook pops up a menu that you can use to go to a page"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:group-name:
*
* Group name for tab drag and drop.
*/
properties[PROP_GROUP_NAME] =
g_param_spec_string ("group-name",
P_("Group Name"),
P_("Group name for tab drag and drop"),
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
properties[PROP_PAGES] =
g_param_spec_object ("pages",
P_("Pages"),
P_("The pages of the notebook."),
G_TYPE_LIST_MODEL,
GTK_PARAM_READABLE);
g_object_class_install_properties (gobject_class, LAST_PROP, properties);
/**
* GtkNotebook::switch-page:
* @notebook: the object which received the signal.
* @page: the new current page
* @page_num: the index of the page
*
* Emitted when the user or a function changes the current page.
*/
notebook_signals[SWITCH_PAGE] =
g_signal_new (I_("switch-page"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, switch_page),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
g_signal_set_va_marshaller (notebook_signals[SWITCH_PAGE],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_VOID__OBJECT_UINTv);
notebook_signals[FOCUS_TAB] =
g_signal_new (I_("focus-tab"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, focus_tab),
NULL, NULL,
_gtk_marshal_BOOLEAN__ENUM,
G_TYPE_BOOLEAN, 1,
GTK_TYPE_NOTEBOOK_TAB);
g_signal_set_va_marshaller (notebook_signals[FOCUS_TAB],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_BOOLEAN__ENUMv);
notebook_signals[SELECT_PAGE] =
g_signal_new (I_("select-page"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, select_page),
NULL, NULL,
_gtk_marshal_BOOLEAN__BOOLEAN,
G_TYPE_BOOLEAN, 1,
G_TYPE_BOOLEAN);
g_signal_set_va_marshaller (notebook_signals[SELECT_PAGE],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_BOOLEAN__BOOLEANv);
notebook_signals[CHANGE_CURRENT_PAGE] =
g_signal_new (I_("change-current-page"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, change_current_page),
NULL, NULL,
_gtk_marshal_BOOLEAN__INT,
G_TYPE_BOOLEAN, 1,
G_TYPE_INT);
g_signal_set_va_marshaller (notebook_signals[CHANGE_CURRENT_PAGE],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_BOOLEAN__INTv);
notebook_signals[MOVE_FOCUS_OUT] =
g_signal_new (I_("move-focus-out"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, move_focus_out),
NULL, NULL,
NULL,
G_TYPE_NONE, 1,
GTK_TYPE_DIRECTION_TYPE);
notebook_signals[REORDER_TAB] =
g_signal_new (I_("reorder-tab"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkNotebookClass, reorder_tab),
NULL, NULL,
_gtk_marshal_BOOLEAN__ENUM_BOOLEAN,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_DIRECTION_TYPE,
G_TYPE_BOOLEAN);
g_signal_set_va_marshaller (notebook_signals[REORDER_TAB],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_BOOLEAN__ENUM_BOOLEANv);
/**
* GtkNotebook::page-reordered:
* @notebook: the #GtkNotebook
* @child: the child #GtkWidget affected
* @page_num: the new page number for @child
*
* the ::page-reordered signal is emitted in the notebook
* right after a page has been reordered.
*/
notebook_signals[PAGE_REORDERED] =
g_signal_new (I_("page-reordered"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, page_reordered),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
g_signal_set_va_marshaller (notebook_signals[PAGE_REORDERED],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_VOID__OBJECT_UINTv);
/**
* GtkNotebook::page-removed:
* @notebook: the #GtkNotebook
* @child: the child #GtkWidget affected
* @page_num: the @child page number
*
* the ::page-removed signal is emitted in the notebook
* right after a page is removed from the notebook.
*/
notebook_signals[PAGE_REMOVED] =
g_signal_new (I_("page-removed"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, page_removed),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
g_signal_set_va_marshaller (notebook_signals[PAGE_REMOVED],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_VOID__OBJECT_UINTv);
/**
* GtkNotebook::page-added:
* @notebook: the #GtkNotebook
* @child: the child #GtkWidget affected
* @page_num: the new page number for @child
*
* the ::page-added signal is emitted in the notebook
* right after a page is added to the notebook.
*/
notebook_signals[PAGE_ADDED] =
g_signal_new (I_("page-added"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, page_added),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2,
GTK_TYPE_WIDGET,
G_TYPE_UINT);
g_signal_set_va_marshaller (notebook_signals[PAGE_ADDED],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_VOID__OBJECT_UINTv);
/**
* GtkNotebook::create-window:
* @notebook: the #GtkNotebook emitting the signal
* @page: the tab of @notebook that is being detached
*
* The ::create-window signal is emitted when a detachable
* tab is dropped on the root window.
*
* A handler for this signal can create a window containing
* a notebook where the tab will be attached. It is also
* responsible for moving/resizing the window and adding the
* necessary properties to the notebook (e.g. the
* #GtkNotebook:group-name ).
*
* Returns: (transfer none): a #GtkNotebook that @page should be
* added to, or %NULL.
*/
notebook_signals[CREATE_WINDOW] =
g_signal_new (I_("create-window"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkNotebookClass, create_window),
gtk_object_handled_accumulator, NULL,
_gtk_marshal_OBJECT__OBJECT,
GTK_TYPE_NOTEBOOK, 1,
GTK_TYPE_WIDGET);
g_signal_set_va_marshaller (notebook_signals[CREATE_WINDOW],
G_TYPE_FROM_CLASS (gobject_class),
_gtk_marshal_OBJECT__OBJECTv);
binding_set = gtk_binding_set_by_class (class);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_space, 0,
"select-page", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Space, 0,
"select-page", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Home, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_FIRST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Home, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_FIRST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_End, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_LAST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_End, 0,
"focus-tab", 1,
GTK_TYPE_NOTEBOOK_TAB, GTK_NOTEBOOK_TAB_LAST);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Up, GDK_CONTROL_MASK,
"change-current-page", 1,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Down, GDK_CONTROL_MASK,
"change-current-page", 1,
G_TYPE_INT, 1);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Up, GDK_CONTROL_MASK | GDK_MOD1_MASK,
"change-current-page", 1,
G_TYPE_INT, -1);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Page_Down, GDK_CONTROL_MASK | GDK_MOD1_MASK,
"change-current-page", 1,
G_TYPE_INT, 1);
add_arrow_bindings (binding_set, GDK_KEY_Up, GTK_DIR_UP);
add_arrow_bindings (binding_set, GDK_KEY_Down, GTK_DIR_DOWN);
add_arrow_bindings (binding_set, GDK_KEY_Left, GTK_DIR_LEFT);
add_arrow_bindings (binding_set, GDK_KEY_Right, GTK_DIR_RIGHT);
add_reorder_bindings (binding_set, GDK_KEY_Up, GTK_DIR_UP, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Down, GTK_DIR_DOWN, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Left, GTK_DIR_LEFT, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Right, GTK_DIR_RIGHT, FALSE);
add_reorder_bindings (binding_set, GDK_KEY_Home, GTK_DIR_LEFT, TRUE);
add_reorder_bindings (binding_set, GDK_KEY_Home, GTK_DIR_UP, TRUE);
add_reorder_bindings (binding_set, GDK_KEY_End, GTK_DIR_RIGHT, TRUE);
add_reorder_bindings (binding_set, GDK_KEY_End, GTK_DIR_DOWN, TRUE);
add_tab_bindings (binding_set, GDK_CONTROL_MASK, GTK_DIR_TAB_FORWARD);
add_tab_bindings (binding_set, GDK_CONTROL_MASK | GDK_SHIFT_MASK, GTK_DIR_TAB_BACKWARD);
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_NOTEBOOK_ACCESSIBLE);
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
gtk_widget_class_set_css_name (widget_class, I_("notebook"));
}
static void
gtk_notebook_init (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GdkContentFormats *targets;
GtkEventController *controller;
GtkGesture *gesture;
GtkLayoutManager *layout;
GtkDropTarget *dest;
gtk_widget_set_can_focus (GTK_WIDGET (notebook), TRUE);
notebook->priv = gtk_notebook_get_instance_private (notebook);
priv = notebook->priv;
priv->cur_page = NULL;
priv->children = NULL;
priv->first_tab = NULL;
priv->focus_tab = NULL;
priv->menu = NULL;
priv->show_tabs = TRUE;
priv->show_border = TRUE;
priv->tab_pos = GTK_POS_TOP;
priv->scrollable = FALSE;
priv->click_child = ARROW_NONE;
priv->need_timer = 0;
priv->child_has_focus = FALSE;
priv->focus_out = FALSE;
priv->group = 0;
priv->pressed_button = 0;
priv->dnd_timer = 0;
priv->switch_tab_timer = 0;
priv->source_targets = gdk_content_formats_new (src_notebook_targets,
G_N_ELEMENTS (src_notebook_targets));
priv->operation = DRAG_OPERATION_NONE;
priv->detached_tab = NULL;
priv->has_scrolled = FALSE;
targets = gdk_content_formats_new (dst_notebook_targets, G_N_ELEMENTS (dst_notebook_targets));
dest = gtk_drop_target_new (targets, GDK_ACTION_MOVE);
g_signal_connect (dest, "drag-motion", G_CALLBACK (gtk_notebook_drag_motion), NULL);
g_signal_connect (dest, "drag-leave", G_CALLBACK (gtk_notebook_drag_leave), NULL);
g_signal_connect (dest, "drag-drop", G_CALLBACK (gtk_notebook_drag_drop), NULL);
gtk_widget_add_controller (GTK_WIDGET (notebook), GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (targets);
priv->header_widget = g_object_new (GTK_TYPE_BOX,
"css-name", "header",
NULL);
gtk_style_context_add_class (gtk_widget_get_style_context (priv->header_widget),
GTK_STYLE_CLASS_TOP);
gtk_widget_hide (priv->header_widget);
gtk_widget_set_parent (priv->header_widget, GTK_WIDGET (notebook));
priv->tabs_widget = gtk_gizmo_new ("tabs",
gtk_notebook_measure_tabs,
gtk_notebook_allocate_tabs,
gtk_notebook_snapshot_tabs,
NULL);
gtk_widget_set_hexpand (priv->tabs_widget, TRUE);
gtk_container_add (GTK_CONTAINER (priv->header_widget), priv->tabs_widget);
priv->stack_widget = gtk_stack_new ();
gtk_widget_set_hexpand (priv->stack_widget, TRUE);
gtk_widget_set_vexpand (priv->stack_widget, TRUE);
gtk_widget_set_parent (priv->stack_widget, GTK_WIDGET (notebook));
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture), GTK_PHASE_CAPTURE);
g_signal_connect (gesture, "pressed", G_CALLBACK (gtk_notebook_gesture_pressed), notebook);
g_signal_connect (gesture, "released", G_CALLBACK (gtk_notebook_gesture_released), notebook);
gtk_widget_add_controller (GTK_WIDGET (notebook), GTK_EVENT_CONTROLLER (gesture));
controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "motion", G_CALLBACK (gtk_notebook_motion), notebook);
gtk_widget_add_controller (GTK_WIDGET (notebook), controller);
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (notebook)),
GTK_STYLE_CLASS_FRAME);
layout = gtk_widget_get_layout_manager (GTK_WIDGET (notebook));
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_VERTICAL);
}
static GtkBuildableIface *parent_buildable_iface;
static void
gtk_notebook_buildable_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_notebook_buildable_add_child;
}
static void
gtk_notebook_buildable_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
GtkNotebook *notebook = GTK_NOTEBOOK (buildable);
if (GTK_IS_NOTEBOOK_PAGE (child))
{
gtk_notebook_insert_notebook_page (notebook, GTK_NOTEBOOK_PAGE (child), -1);
}
else if (GTK_IS_WIDGET (child))
{
if (type && strcmp (type, "tab") == 0)
{
GtkWidget * page;
page = gtk_notebook_get_nth_page (notebook, -1);
/* To set the tab label widget, we must have already a child
* inside the tab container. */
g_assert (page != NULL);
/* warn when Glade tries to overwrite label */
if (gtk_notebook_get_tab_label (notebook, page))
g_warning ("Overriding tab label for notebook");
gtk_notebook_set_tab_label (notebook, page, GTK_WIDGET (child));
}
else if (type && strcmp (type, "action-start") == 0)
{
gtk_notebook_set_action_widget (notebook, GTK_WIDGET (child), GTK_PACK_START);
}
else if (type && strcmp (type, "action-end") == 0)
{
gtk_notebook_set_action_widget (notebook, GTK_WIDGET (child), GTK_PACK_END);
}
else if (!type)
gtk_notebook_append_page (notebook, GTK_WIDGET (child), NULL);
else
GTK_BUILDER_WARN_INVALID_CHILD_TYPE (notebook, type);
}
else
{
parent_buildable_iface->add_child (buildable, builder, child, type);
}
}
static gboolean
gtk_notebook_has_current_page (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
return priv->cur_page &&
gtk_widget_get_visible (priv->cur_page->child);
}
static gboolean
gtk_notebook_select_page (GtkNotebook *notebook,
gboolean move_focus)
{
GtkNotebookPrivate *priv = notebook->priv;
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && priv->show_tabs)
{
gtk_notebook_page_select (notebook, move_focus);
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_notebook_focus_tab (GtkNotebook *notebook,
GtkNotebookTab type)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && priv->show_tabs)
{
switch (type)
{
case GTK_NOTEBOOK_TAB_FIRST:
list = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, TRUE);
if (list)
gtk_notebook_switch_focus_tab (notebook, list);
break;
case GTK_NOTEBOOK_TAB_LAST:
list = gtk_notebook_search_page (notebook, NULL, STEP_PREV, TRUE);
if (list)
gtk_notebook_switch_focus_tab (notebook, list);
break;
default:
break;
}
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_notebook_change_current_page (GtkNotebook *notebook,
gint offset)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *current = NULL;
if (!priv->show_tabs)
return FALSE;
if (priv->cur_page)
current = g_list_find (priv->children, priv->cur_page);
while (offset != 0)
{
current = gtk_notebook_search_page (notebook, current,
offset < 0 ? STEP_PREV : STEP_NEXT,
TRUE);
if (!current)
{
current = gtk_notebook_search_page (notebook, NULL,
offset < 0 ? STEP_PREV : STEP_NEXT,
TRUE);
}
offset += offset < 0 ? 1 : -1;
}
if (current)
gtk_notebook_switch_page (notebook, current->data);
else
gtk_widget_error_bell (GTK_WIDGET (notebook));
return TRUE;
}
static GtkDirectionType
get_effective_direction (GtkNotebook *notebook,
GtkDirectionType direction)
{
GtkNotebookPrivate *priv = notebook->priv;
/* Remap the directions into the effective direction it would be for a
* GTK_POS_TOP notebook
*/
#define D(rest) GTK_DIR_##rest
static const GtkDirectionType translate_direction[2][4][6] = {
/* LEFT */ {{ D(TAB_FORWARD), D(TAB_BACKWARD), D(LEFT), D(RIGHT), D(UP), D(DOWN) },
/* RIGHT */ { D(TAB_BACKWARD), D(TAB_FORWARD), D(LEFT), D(RIGHT), D(DOWN), D(UP) },
/* TOP */ { D(TAB_FORWARD), D(TAB_BACKWARD), D(UP), D(DOWN), D(LEFT), D(RIGHT) },
/* BOTTOM */ { D(TAB_BACKWARD), D(TAB_FORWARD), D(DOWN), D(UP), D(LEFT), D(RIGHT) }},
/* LEFT */ {{ D(TAB_BACKWARD), D(TAB_FORWARD), D(LEFT), D(RIGHT), D(DOWN), D(UP) },
/* RIGHT */ { D(TAB_FORWARD), D(TAB_BACKWARD), D(LEFT), D(RIGHT), D(UP), D(DOWN) },
/* TOP */ { D(TAB_FORWARD), D(TAB_BACKWARD), D(UP), D(DOWN), D(RIGHT), D(LEFT) },
/* BOTTOM */ { D(TAB_BACKWARD), D(TAB_FORWARD), D(DOWN), D(UP), D(RIGHT), D(LEFT) }},
};
#undef D
int text_dir = gtk_widget_get_direction (GTK_WIDGET (notebook)) == GTK_TEXT_DIR_RTL ? 1 : 0;
return translate_direction[text_dir][priv->tab_pos][direction];
}
static GtkPositionType
get_effective_tab_pos (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (gtk_widget_get_direction (GTK_WIDGET (notebook)) == GTK_TEXT_DIR_RTL)
{
switch (priv->tab_pos)
{
case GTK_POS_LEFT:
return GTK_POS_RIGHT;
case GTK_POS_RIGHT:
return GTK_POS_LEFT;
default: ;
}
}
return priv->tab_pos;
}
static void
gtk_notebook_move_focus_out (GtkNotebook *notebook,
GtkDirectionType direction_type)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkDirectionType effective_direction = get_effective_direction (notebook, direction_type);
GtkWidget *toplevel;
if (gtk_widget_get_focus_child (GTK_WIDGET (notebook)) && effective_direction == GTK_DIR_UP)
if (focus_tabs_in (notebook))
return;
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && effective_direction == GTK_DIR_DOWN)
if (focus_child_in (notebook, GTK_DIR_TAB_FORWARD))
return;
/* At this point, we know we should be focusing out of the notebook entirely. We
* do this by setting a flag, then propagating the focus motion to the notebook.
*/
toplevel = GTK_WIDGET (gtk_widget_get_root (GTK_WIDGET (notebook)));
if (!GTK_IS_ROOT (toplevel))
return;
g_object_ref (notebook);
priv->focus_out = TRUE;
g_signal_emit_by_name (toplevel, "move-focus", direction_type);
priv->focus_out = FALSE;
g_object_unref (notebook);
}
static gint
reorder_tab (GtkNotebook *notebook, GList *position, GList *tab)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *elem;
if (position == tab)
return g_list_position (priv->children, tab);
/* check that we aren't inserting the tab in the
* same relative position, taking packing into account */
elem = (position) ? position->prev : g_list_last (priv->children);
if (elem == tab)
return g_list_position (priv->children, tab);
/* now actually reorder the tab */
if (priv->first_tab == tab)
priv->first_tab = gtk_notebook_search_page (notebook, priv->first_tab,
STEP_NEXT, TRUE);
priv->children = g_list_remove_link (priv->children, tab);
if (!position)
elem = g_list_last (priv->children);
else
{
elem = position->prev;
position->prev = tab;
}
if (elem)
elem->next = tab;
else
priv->children = tab;
tab->prev = elem;
tab->next = position;
return g_list_position (priv->children, tab);
}
static gboolean
gtk_notebook_reorder_tab (GtkNotebook *notebook,
GtkDirectionType direction_type,
gboolean move_to_last)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkDirectionType effective_direction = get_effective_direction (notebook, direction_type);
GList *last, *child, *element;
gint page_num, old_page_num, i;
if (!gtk_widget_is_focus (GTK_WIDGET (notebook)) || !priv->show_tabs)
return FALSE;
if (!gtk_notebook_has_current_page (notebook) ||
!priv->cur_page->reorderable)
return FALSE;
if (effective_direction != GTK_DIR_LEFT &&
effective_direction != GTK_DIR_RIGHT)
return FALSE;
if (move_to_last)
{
child = priv->focus_tab;
do
{
last = child;
child = gtk_notebook_search_page (notebook, last,
(effective_direction == GTK_DIR_RIGHT) ? STEP_NEXT : STEP_PREV,
TRUE);
}
while (child);
child = last;
}
else
child = gtk_notebook_search_page (notebook, priv->focus_tab,
(effective_direction == GTK_DIR_RIGHT) ? STEP_NEXT : STEP_PREV,
TRUE);
if (!child || child->data == priv->cur_page)
return FALSE;
old_page_num = g_list_position (priv->children, priv->focus_tab);
if (effective_direction == GTK_DIR_RIGHT)
page_num = reorder_tab (notebook, child->next, priv->focus_tab);
else
page_num = reorder_tab (notebook, child, priv->focus_tab);
gtk_notebook_child_reordered (notebook, priv->focus_tab->data);
for (element = priv->children, i = 0; element; element = element->next, i++)
{
if (MIN (old_page_num, page_num) <= i && i <= MAX (old_page_num, page_num))
g_object_notify (G_OBJECT (element->data), "position");
}
g_signal_emit (notebook,
notebook_signals[PAGE_REORDERED],
0,
((GtkNotebookPage *) priv->focus_tab->data)->child,
page_num);
return TRUE;
}
/**
* gtk_notebook_new:
*
* Creates a new #GtkNotebook widget with no pages.
* Returns: the newly created #GtkNotebook
*/
GtkWidget*
gtk_notebook_new (void)
{
return g_object_new (GTK_TYPE_NOTEBOOK, NULL);
}
/* Private GObject Methods :
*
* gtk_notebook_set_property
* gtk_notebook_get_property
*/
static void
gtk_notebook_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkNotebook *notebook;
notebook = GTK_NOTEBOOK (object);
switch (prop_id)
{
case PROP_SHOW_TABS:
gtk_notebook_set_show_tabs (notebook, g_value_get_boolean (value));
break;
case PROP_SHOW_BORDER:
gtk_notebook_set_show_border (notebook, g_value_get_boolean (value));
break;
case PROP_SCROLLABLE:
gtk_notebook_set_scrollable (notebook, g_value_get_boolean (value));
break;
case PROP_ENABLE_POPUP:
if (g_value_get_boolean (value))
gtk_notebook_popup_enable (notebook);
else
gtk_notebook_popup_disable (notebook);
break;
case PROP_PAGE:
gtk_notebook_set_current_page (notebook, g_value_get_int (value));
break;
case PROP_TAB_POS:
gtk_notebook_set_tab_pos (notebook, g_value_get_enum (value));
break;
case PROP_GROUP_NAME:
gtk_notebook_set_group_name (notebook, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_notebook_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkNotebook *notebook = GTK_NOTEBOOK (object);
GtkNotebookPrivate *priv = notebook->priv;
switch (prop_id)
{
case PROP_SHOW_TABS:
g_value_set_boolean (value, priv->show_tabs);
break;
case PROP_SHOW_BORDER:
g_value_set_boolean (value, priv->show_border);
break;
case PROP_SCROLLABLE:
g_value_set_boolean (value, priv->scrollable);
break;
case PROP_ENABLE_POPUP:
g_value_set_boolean (value, priv->menu != NULL);
break;
case PROP_PAGE:
g_value_set_int (value, gtk_notebook_get_current_page (notebook));
break;
case PROP_TAB_POS:
g_value_set_enum (value, priv->tab_pos);
break;
case PROP_GROUP_NAME:
g_value_set_string (value, gtk_notebook_get_group_name (notebook));
break;
case PROP_PAGES:
g_value_set_object (value, gtk_notebook_get_pages (notebook));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* Private GtkWidget Methods :
*
* gtk_notebook_destroy
* gtk_notebook_map
* gtk_notebook_unmap
* gtk_notebook_snapshot
* gtk_notebook_popup_menu
* gtk_notebook_drag_begin
* gtk_notebook_drag_end
* gtk_notebook_drag_failed
* gtk_notebook_drag_motion
* gtk_notebook_drag_drop
* gtk_notebook_drag_data_get
*/
static void
remove_switch_tab_timer (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->switch_tab_timer)
{
g_source_remove (priv->switch_tab_timer);
priv->switch_tab_timer = 0;
}
}
static void
gtk_notebook_destroy (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
if (priv->pages)
g_list_model_items_changed (G_LIST_MODEL (priv->pages), 0, g_list_length (priv->children), 0);
if (priv->source_targets)
{
gdk_content_formats_unref (priv->source_targets);
priv->source_targets = NULL;
}
remove_switch_tab_timer (notebook);
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->destroy (widget);
}
static void
gtk_notebook_finalize (GObject *object)
{
GtkNotebook *notebook = GTK_NOTEBOOK (object);
GtkNotebookPrivate *priv = notebook->priv;
gtk_widget_unparent (priv->header_widget);
gtk_widget_unparent (priv->stack_widget);
G_OBJECT_CLASS (gtk_notebook_parent_class)->finalize (object);
}
static void
gtk_notebook_dispose (GObject *object)
{
GtkNotebook *notebook = GTK_NOTEBOOK (object);
GtkNotebookPrivate *priv = notebook->priv;
GList *l = priv->children;
while (l != NULL)
{
GtkNotebookPage *page = l->data;
l = l->next;
gtk_notebook_remove (GTK_CONTAINER (notebook), page->child);
}
G_OBJECT_CLASS (gtk_notebook_parent_class)->dispose (object);
}
static gboolean
gtk_notebook_get_tab_area_position (GtkNotebook *notebook,
graphene_rect_t *rectangle)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->show_tabs && gtk_notebook_has_current_page (notebook))
{
return gtk_widget_compute_bounds (priv->header_widget,
GTK_WIDGET (notebook),
rectangle);
}
else
{
graphene_rect_init_from_rect (rectangle, graphene_rect_zero ());
}
return FALSE;
}
static void
gtk_notebook_unmap (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
stop_scrolling (notebook);
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->unmap (widget);
}
static void
gtk_notebook_distribute_arrow_width (GtkNotebook *notebook,
GtkPackType type,
gint size,
gint *out_left,
gint *out_right)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkRequestedSize sizes[2];
if (priv->arrow_widget[2 * type + 1] == NULL)
{
if (priv->arrow_widget[2 * type] == NULL)
*out_left = 0;
else
*out_left = size;
*out_right = 0;
}
else if (priv->arrow_widget[2 * type] == NULL)
{
*out_left = 0;
*out_right = size;
}
else
{
gtk_widget_measure (priv->arrow_widget[2 * type],
GTK_ORIENTATION_HORIZONTAL,
-1,
&sizes[0].minimum_size, &sizes[0].natural_size,
NULL, NULL);
gtk_widget_measure (priv->arrow_widget[2 * type + 1],
GTK_ORIENTATION_HORIZONTAL,
-1,
&sizes[1].minimum_size, &sizes[1].natural_size,
NULL, NULL);
size -= sizes[0].minimum_size + sizes[1].minimum_size;
size = gtk_distribute_natural_allocation (size, G_N_ELEMENTS (sizes), sizes);
*out_left = sizes[0].minimum_size + size / 2;
*out_right = sizes[1].minimum_size + (size + 1) / 2;
}
}
static void
gtk_notebook_measure_arrows (GtkNotebook *notebook,
GtkPackType type,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkNotebookPrivate *priv = notebook->priv;
gint child1_min, child1_nat;
gint child2_min, child2_nat;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (priv->arrow_widget[2 * type])
{
gtk_widget_measure (priv->arrow_widget[2 * type],
orientation,
for_size,
&child1_min, &child1_nat,
NULL, NULL);
}
else
{
child1_min = child1_nat = 0;
}
if (priv->arrow_widget[2 * type + 1])
{
gtk_widget_measure (priv->arrow_widget[2 * type + 1],
orientation,
for_size,
&child2_min, &child2_nat,
NULL, NULL);
}
else
{
child2_min = child2_nat = 0;
}
*minimum = child1_min + child2_min;
*natural = child1_nat + child2_nat;
if (minimum_baseline)
*minimum_baseline = -1;
if (natural_baseline)
*natural_baseline = -1;
}
else
{
gint child1_size, child2_size;
if (for_size > -1)
gtk_notebook_distribute_arrow_width (notebook, type, for_size, &child1_size, &child2_size);
else
child1_size = child2_size = for_size;
if (priv->arrow_widget[2 * type])
{
gtk_widget_measure (priv->arrow_widget[2 * type],
orientation,
child1_size,
&child1_min, &child1_nat,
NULL, NULL);
}
else
{
child1_min = child1_nat = 0;
}
if (priv->arrow_widget[2 * type + 1])
{
gtk_widget_measure (priv->arrow_widget[2 * type + 1],
orientation,
child2_size,
&child2_min, &child2_nat,
NULL, NULL);
}
else
{
child2_min = child2_nat = 0;
}
*minimum = MAX (child1_min, child2_min);
*natural = MAX (child1_nat, child2_nat);
if (minimum_baseline)
*minimum_baseline = -1;
if (natural_baseline)
*natural_baseline = -1;
}
}
static void
gtk_notebook_get_preferred_tabs_size (GtkNotebook *notebook,
GtkRequisition *requisition)
{
GtkNotebookPrivate *priv = notebook->priv;
gint tab_width = 0;
gint tab_height = 0;
gint tab_max = 0;
guint vis_pages = 0;
GList *children;
GtkNotebookPage *page;
for (children = priv->children; children;
children = children->next)
{
page = children->data;
if (gtk_widget_get_visible (page->child))
{
vis_pages++;
if (!gtk_widget_get_visible (page->tab_label))
gtk_widget_show (page->tab_label);
gtk_widget_measure (page->tab_widget,
GTK_ORIENTATION_HORIZONTAL,
-1,
&page->requisition.width, NULL,
NULL, NULL);
gtk_widget_measure (page->tab_widget,
GTK_ORIENTATION_VERTICAL,
page->requisition.width,
&page->requisition.height, NULL,
NULL, NULL);
switch (priv->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
tab_height = MAX (tab_height, page->requisition.height);
tab_max = MAX (tab_max, page->requisition.width);
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
tab_width = MAX (tab_width, page->requisition.width);
tab_max = MAX (tab_max, page->requisition.height);
break;
default:
g_assert_not_reached ();
break;
}
}
else if (gtk_widget_get_visible (page->tab_label))
gtk_widget_hide (page->tab_label);
}
children = priv->children;
if (vis_pages)
{
switch (priv->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (tab_height == 0)
break;
if (priv->scrollable)
{
gint arrow_height, unused;
gtk_notebook_measure_arrows (notebook,
GTK_PACK_START,
GTK_ORIENTATION_VERTICAL,
-1,
&arrow_height, &unused,
NULL, NULL);
tab_height = MAX (tab_height, arrow_height);
gtk_notebook_measure_arrows (notebook,
GTK_PACK_END,
GTK_ORIENTATION_VERTICAL,
-1,
&arrow_height, &unused,
NULL, NULL);
tab_height = MAX (tab_height, arrow_height);
}
while (children)
{
page = children->data;
children = children->next;
if (!gtk_widget_get_visible (page->child))
continue;
tab_width += page->requisition.width;
page->requisition.height = tab_height;
}
if (priv->scrollable)
{
gint start_arrow_width, end_arrow_width, unused;
gtk_notebook_measure_arrows (notebook,
GTK_PACK_START,
GTK_ORIENTATION_HORIZONTAL,
tab_height,
&start_arrow_width, &unused,
NULL, NULL);
gtk_notebook_measure_arrows (notebook,
GTK_PACK_END,
GTK_ORIENTATION_HORIZONTAL,
tab_height,
&end_arrow_width, &unused,
NULL, NULL);
tab_width = MIN (tab_width,
tab_max + start_arrow_width + end_arrow_width);
}
requisition->width = tab_width;
requisition->height = tab_height;
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (tab_width == 0)
break;
if (priv->scrollable)
{
gint arrow_width, unused;
gtk_notebook_measure_arrows (notebook,
GTK_PACK_START,
GTK_ORIENTATION_HORIZONTAL,
-1,
&arrow_width, &unused,
NULL, NULL);
tab_width = MAX (tab_width, arrow_width);
gtk_notebook_measure_arrows (notebook,
GTK_PACK_END,
GTK_ORIENTATION_HORIZONTAL,
-1,
&arrow_width, &unused,
NULL, NULL);
tab_width = MAX (tab_width, arrow_width);
}
while (children)
{
page = children->data;
children = children->next;
if (!gtk_widget_get_visible (page->child))
continue;
page->requisition.width = tab_width;
tab_height += page->requisition.height;
}
if (priv->scrollable)
{
gint start_arrow_height, end_arrow_height, unused;
gtk_notebook_measure_arrows (notebook,
GTK_PACK_START,
GTK_ORIENTATION_VERTICAL,
tab_width,
&start_arrow_height, &unused,
NULL, NULL);
gtk_notebook_measure_arrows (notebook,
GTK_PACK_END,
GTK_ORIENTATION_VERTICAL,
tab_width,
&end_arrow_height, &unused,
NULL, NULL);
tab_height = MIN (tab_height, tab_max + start_arrow_height + end_arrow_height);
}
requisition->height = tab_height;
requisition->height = MAX (requisition->height, tab_max);
requisition->width = tab_width;
break;
default:
g_assert_not_reached ();
requisition->width = 0;
requisition->height = 0;
}
}
else
{
requisition->width = 0;
requisition->height = 0;
}
}
static void
gtk_notebook_measure_tabs (GtkGizmo *gizmo,
GtkOrientation orientation,
gint size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkWidget *widget = gtk_widget_get_parent (GTK_WIDGET (gizmo));
GtkNotebook *notebook = GTK_NOTEBOOK (gtk_widget_get_parent (widget));
GtkRequisition tabs_requisition = { 0 };
gtk_notebook_get_preferred_tabs_size (notebook, &tabs_requisition);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
*minimum = tabs_requisition.width;
*natural = tabs_requisition.width;
}
else
{
*minimum = tabs_requisition.height;
*natural = tabs_requisition.height;
}
}
static void
gtk_notebook_allocate_tabs (GtkGizmo *gizmo,
int width,
int height,
int baseline)
{
GtkWidget *widget = gtk_widget_get_parent (GTK_WIDGET (gizmo));
GtkNotebook *notebook = GTK_NOTEBOOK (gtk_widget_get_parent (widget));
gtk_notebook_pages_allocate (notebook, width, height);
}
static gboolean
gtk_notebook_show_arrows (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *children;
if (!priv->scrollable)
return FALSE;
children = priv->children;
while (children)
{
GtkNotebookPage *page = children->data;
if (!gtk_widget_get_child_visible (page->tab_widget))
return TRUE;
children = children->next;
}
return FALSE;
}
static GtkNotebookArrow
gtk_notebook_get_arrow (GtkNotebook *notebook,
gint x,
gint y)
{
GtkNotebookPrivate *priv = notebook->priv;
gint i;
if (gtk_notebook_show_arrows (notebook))
{
for (i = 0; i < 4; i++)
{
graphene_rect_t arrow_bounds;
if (priv->arrow_widget[i] == NULL)
continue;
if (!gtk_widget_compute_bounds (priv->arrow_widget[i],
GTK_WIDGET (notebook),
&arrow_bounds))
continue;
if (graphene_rect_contains_point (&arrow_bounds,
&(graphene_point_t){x, y}))
return i;
}
}
return ARROW_NONE;
}
static void
gtk_notebook_do_arrow (GtkNotebook *notebook,
GtkNotebookArrow arrow)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget = GTK_WIDGET (notebook);
gboolean is_rtl, left;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
left = (ARROW_IS_LEFT (arrow) && !is_rtl) ||
(!ARROW_IS_LEFT (arrow) && is_rtl);
if (!priv->focus_tab ||
gtk_notebook_search_page (notebook, priv->focus_tab,
left ? STEP_PREV : STEP_NEXT,
TRUE))
{
gtk_notebook_change_current_page (notebook, left ? -1 : 1);
gtk_widget_grab_focus (widget);
}
}
static gboolean
gtk_notebook_arrow_button_press (GtkNotebook *notebook,
GtkNotebookArrow arrow,
gint button)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget = GTK_WIDGET (notebook);
gboolean is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
gboolean left = (ARROW_IS_LEFT (arrow) && !is_rtl) ||
(!ARROW_IS_LEFT (arrow) && is_rtl);
if (priv->pressed_button)
return FALSE;
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
priv->pressed_button = button;
priv->click_child = arrow;
if (button == GDK_BUTTON_PRIMARY)
{
gtk_notebook_do_arrow (notebook, arrow);
gtk_notebook_set_scroll_timer (notebook);
}
else if (button == GDK_BUTTON_MIDDLE)
gtk_notebook_page_select (notebook, TRUE);
else if (button == GDK_BUTTON_SECONDARY)
gtk_notebook_switch_focus_tab (notebook,
gtk_notebook_search_page (notebook,
NULL,
left ? STEP_NEXT : STEP_PREV,
TRUE));
return TRUE;
}
static gboolean
gtk_notebook_page_tab_label_is_visible (GtkNotebookPage *page)
{
return page->tab_label &&
gtk_widget_get_visible (page->tab_widget) &&
gtk_widget_get_child_visible (page->tab_widget) &&
gtk_widget_get_visible (page->tab_label) &&
gtk_widget_get_child_visible (page->tab_label);
}
static gboolean
in_tabs (GtkNotebook *notebook,
gdouble x,
gdouble y)
{
GtkNotebookPrivate *priv = notebook->priv;
graphene_rect_t tabs_bounds;
if (!gtk_widget_compute_bounds (priv->tabs_widget, GTK_WIDGET (notebook), &tabs_bounds))
return FALSE;
return graphene_rect_contains_point (&tabs_bounds,
&(graphene_point_t){x, y});
}
static GList*
get_tab_at_pos (GtkNotebook *notebook,
gdouble x,
gdouble y)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *children;
for (children = priv->children; children; children = children->next)
{
graphene_rect_t bounds;
page = children->data;
if (!gtk_notebook_page_tab_label_is_visible (page))
continue;
if (!gtk_widget_compute_bounds (page->tab_widget, GTK_WIDGET (notebook), &bounds))
continue;
if (graphene_rect_contains_point (&bounds, &(graphene_point_t){x, y}))
return children;
}
return NULL;
}
static void
gtk_notebook_gesture_pressed (GtkGestureClick *gesture,
int n_press,
double x,
double y,
gpointer user_data)
{
GtkNotebook *notebook = user_data;
GtkWidget *widget = user_data;
GtkNotebookPrivate *priv = notebook->priv;
GdkEventSequence *sequence;
GtkNotebookArrow arrow;
GtkNotebookPage *page;
const GdkEvent *event;
guint button;
GList *tab;
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
if (!priv->children)
return;
arrow = gtk_notebook_get_arrow (notebook, x, y);
if (arrow != ARROW_NONE)
{
gtk_notebook_arrow_button_press (notebook, arrow, button);
return;
}
if (in_tabs (notebook, x, y) && priv->menu && gdk_event_triggers_context_menu (event))
{
GdkRectangle rect;
rect.x = x;
rect.y = y;
rect.width = 1;
rect.height = 1;
gtk_popover_set_pointing_to (GTK_POPOVER (priv->menu), &rect);
gtk_popover_popup (GTK_POPOVER (priv->menu));
return;
}
if (button != GDK_BUTTON_PRIMARY)
return;
if ((tab = get_tab_at_pos (notebook, x, y)) != NULL)
{
gboolean page_changed, was_focus;
page = tab->data;
page_changed = page != priv->cur_page;
was_focus = gtk_widget_is_focus (widget);
gtk_notebook_switch_focus_tab (notebook, tab);
gtk_widget_grab_focus (widget);
if (page_changed && !was_focus)
gtk_widget_child_focus (page->child, GTK_DIR_TAB_FORWARD);
/* save press to possibly begin a drag */
if (page->reorderable || page->detachable)
{
graphene_rect_t tab_bounds;
priv->pressed_button = button;
priv->mouse_x = x;
priv->mouse_y = y;
priv->drag_begin_x = priv->mouse_x;
priv->drag_begin_y = priv->mouse_y;
/* tab bounds get set to empty, which is fine */
priv->drag_offset_x = priv->drag_begin_x;
priv->drag_offset_y = priv->drag_begin_y;
if (gtk_widget_compute_bounds (page->tab_widget, GTK_WIDGET (notebook), &tab_bounds))
{
priv->drag_offset_x -= tab_bounds.origin.x;
priv->drag_offset_y -= tab_bounds.origin.y;
}
}
}
}
static gboolean
gtk_notebook_popup_menu (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
if (priv->menu)
{
gtk_popover_popup (GTK_POPOVER (priv->menu));
return TRUE;
}
return FALSE;
}
static void
stop_scrolling (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->timer)
{
g_source_remove (priv->timer);
priv->timer = 0;
priv->need_timer = FALSE;
}
priv->click_child = ARROW_NONE;
priv->pressed_button = 0;
}
static GList*
get_drop_position (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *children, *last_child;
GtkNotebookPage *page;
gboolean is_rtl;
gint x, y;
x = priv->mouse_x;
y = priv->mouse_y;
is_rtl = gtk_widget_get_direction ((GtkWidget *) notebook) == GTK_TEXT_DIR_RTL;
last_child = NULL;
for (children = priv->children; children; children = children->next)
{
page = children->data;
if ((priv->operation != DRAG_OPERATION_REORDER || page != priv->cur_page) &&
gtk_widget_get_visible (page->child) &&
page->tab_label &&
gtk_widget_get_mapped (page->tab_label))
{
graphene_rect_t tab_bounds;
if (!gtk_widget_compute_bounds (page->tab_widget, GTK_WIDGET (notebook), &tab_bounds))
continue;
switch (priv->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (!is_rtl)
{
if (tab_bounds.origin.x + tab_bounds.size.width / 2 > x)
return children;
}
else
{
if (tab_bounds.origin.x + tab_bounds.size.width / 2 < x)
return children;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (tab_bounds.origin.y + tab_bounds.size.height / 2 > y)
return children;
break;
default:
g_assert_not_reached ();
break;
}
last_child = children->next;
}
}
return last_child;
}
static void
tab_drag_begin (GtkNotebook *notebook,
GtkNotebookPage *page)
{
gtk_style_context_add_class (gtk_widget_get_style_context (page->tab_widget), GTK_STYLE_CLASS_DND);
}
/* This function undoes the reparenting that happens both when drag_surface
* is shown for reordering and when the DnD icon is shown for detaching
*/
static void
tab_drag_end (GtkNotebook *notebook,
GtkNotebookPage *page)
{
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
{
g_object_ref (page->tab_label);
gtk_container_remove (GTK_CONTAINER (gtk_widget_get_parent (page->tab_label)), page->tab_label);
gtk_widget_set_parent (page->tab_label, page->tab_widget);
g_object_unref (page->tab_label);
}
gtk_style_context_remove_class (gtk_widget_get_style_context (page->tab_widget), GTK_STYLE_CLASS_DND);
}
static void
gtk_notebook_stop_reorder (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
if (priv->operation == DRAG_OPERATION_DETACH)
page = priv->detached_tab;
else
page = priv->cur_page;
if (!page || !page->tab_label)
return;
priv->pressed_button = 0;
if (page->reorderable || page->detachable)
{
if (priv->operation == DRAG_OPERATION_REORDER)
{
gint old_page_num, page_num, i;
GList *element;
element = get_drop_position (notebook);
old_page_num = g_list_position (priv->children, priv->focus_tab);
page_num = reorder_tab (notebook, element, priv->focus_tab);
gtk_notebook_child_reordered (notebook, page);
if (priv->has_scrolled || old_page_num != page_num)
{
for (element = priv->children, i = 0; element; element = element->next, i++)
{
if (MIN (old_page_num, page_num) <= i && i <= MAX (old_page_num, page_num))
g_object_notify (G_OBJECT (element->data), "position");
}
g_signal_emit (notebook,
notebook_signals[PAGE_REORDERED], 0,
page->child, page_num);
}
}
priv->has_scrolled = FALSE;
tab_drag_end (notebook, page);
priv->operation = DRAG_OPERATION_NONE;
if (priv->dnd_timer)
{
g_source_remove (priv->dnd_timer);
priv->dnd_timer = 0;
}
gtk_widget_queue_allocate (GTK_WIDGET (notebook));
}
}
static void
gtk_notebook_gesture_released (GtkGestureClick *gesture,
int n_press,
double x,
double y,
gpointer user_data)
{
GtkNotebook *notebook = user_data;
GtkNotebookPrivate *priv = notebook->priv;
GdkEventSequence *sequence;
const GdkEvent *event;
guint button;
sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
event = gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
if (!event)
return;
if (priv->pressed_button != button)
return;
if (priv->operation == DRAG_OPERATION_REORDER &&
priv->cur_page &&
priv->cur_page->reorderable)
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
static GtkNotebookPointerPosition
get_pointer_position (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget = GTK_WIDGET (notebook);
graphene_rect_t area;
gint width, height;
gboolean is_rtl;
if (!priv->scrollable)
return POINTER_BETWEEN;
gtk_notebook_get_tab_area_position (notebook, &area);
width = area.size.width;
height = area.size.height;
if (priv->tab_pos == GTK_POS_TOP ||
priv->tab_pos == GTK_POS_BOTTOM)
{
gint x = priv->mouse_x;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
if (x > width - SCROLL_THRESHOLD)
return (is_rtl) ? POINTER_BEFORE : POINTER_AFTER;
else if (x < SCROLL_THRESHOLD)
return (is_rtl) ? POINTER_AFTER : POINTER_BEFORE;
else
return POINTER_BETWEEN;
}
else
{
gint y = priv->mouse_y;
if (y > height - SCROLL_THRESHOLD)
return POINTER_AFTER;
else if (y < SCROLL_THRESHOLD)
return POINTER_BEFORE;
else
return POINTER_BETWEEN;
}
}
static gboolean
scroll_notebook_timer (gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPointerPosition pointer_position;
GList *element, *first_tab;
pointer_position = get_pointer_position (notebook);
element = get_drop_position (notebook);
reorder_tab (notebook, element, priv->focus_tab);
first_tab = gtk_notebook_search_page (notebook, priv->first_tab,
(pointer_position == POINTER_BEFORE) ? STEP_PREV : STEP_NEXT,
TRUE);
if (first_tab && priv->cur_page)
{
priv->first_tab = first_tab;
gtk_widget_queue_allocate (priv->tabs_widget);
}
return TRUE;
}
static gboolean
check_threshold (GtkNotebook *notebook,
gint current_x,
gint current_y)
{
gint dnd_threshold;
graphene_rect_t rectangle;
GtkSettings *settings;
settings = gtk_widget_get_settings (GTK_WIDGET (notebook));
g_object_get (G_OBJECT (settings), "gtk-dnd-drag-threshold", &dnd_threshold, NULL);
/* we want a large threshold */
dnd_threshold *= DND_THRESHOLD_MULTIPLIER;
gtk_notebook_get_tab_area_position (notebook, &rectangle);
graphene_rect_inset (&rectangle, -dnd_threshold, -dnd_threshold);
/* The negation here is important! */
return !graphene_rect_contains_point (&rectangle, &(graphene_point_t){current_x, current_y});
}
static void
gtk_notebook_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data)
{
GtkWidget *widget = GTK_WIDGET (user_data);
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
guint state;
page = priv->cur_page;
if (!page)
return;
if (!gtk_get_current_event_state (&state))
return;
if (!(state & GDK_BUTTON1_MASK) &&
priv->pressed_button != 0)
{
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
priv->mouse_x = x;
priv->mouse_y = y;
if (priv->pressed_button == 0)
return;
if (page->detachable &&
check_threshold (notebook, priv->mouse_x, priv->mouse_y))
{
GdkContentProvider *content;
GtkDragSource *source;
priv->detached_tab = priv->cur_page;
source = gtk_drag_source_new ();
content = gdk_content_provider_new_with_formats (priv->source_targets, gtk_notebook_drag_data_get, widget);
gtk_drag_source_set_content (source, content);
g_object_unref (content);
gtk_drag_source_set_actions (source, GDK_ACTION_MOVE);
g_signal_connect (source, "drag-begin", G_CALLBACK (gtk_notebook_drag_begin), notebook);
g_signal_connect (source, "drag-end", G_CALLBACK (gtk_notebook_drag_end), notebook);
g_signal_connect (source, "drag-failed", G_CALLBACK (gtk_notebook_drag_failed), notebook);
gtk_drag_source_drag_begin (source, widget,
gtk_get_current_event_device (),
priv->drag_begin_x, priv->drag_begin_y);
g_object_unref (source);
return;
}
if (page->reorderable &&
(priv->operation == DRAG_OPERATION_REORDER ||
gtk_drag_check_threshold (widget, priv->drag_begin_x, priv->drag_begin_y,
priv->mouse_x, priv->mouse_y)))
{
GtkNotebookPointerPosition pointer_position = get_pointer_position (notebook);
if (pointer_position != POINTER_BETWEEN &&
gtk_notebook_show_arrows (notebook))
{
/* scroll tabs */
if (!priv->dnd_timer)
{
priv->has_scrolled = TRUE;
priv->dnd_timer = g_timeout_add (TIMEOUT_REPEAT * SCROLL_DELAY_FACTOR,
scroll_notebook_timer,
notebook);
g_source_set_name_by_id (priv->dnd_timer, "[gtk] scroll_notebook_timer");
}
}
else
{
if (priv->dnd_timer)
{
g_source_remove (priv->dnd_timer);
priv->dnd_timer = 0;
}
}
if (priv->operation != DRAG_OPERATION_REORDER)
{
priv->operation = DRAG_OPERATION_REORDER;
tab_drag_begin (notebook, page);
}
}
if (priv->operation == DRAG_OPERATION_REORDER)
gtk_widget_queue_allocate (priv->tabs_widget);
}
static void
gtk_notebook_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->grab_notify (widget, was_grabbed);
if (!was_grabbed)
{
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
}
static void
update_arrow_state (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
gint i;
gboolean is_rtl, left;
is_rtl = gtk_widget_get_direction (GTK_WIDGET (notebook)) == GTK_TEXT_DIR_RTL;
for (i = 0; i < 4; i++)
{
gboolean sensitive = TRUE;
if (priv->arrow_widget[i] == NULL)
continue;
left = (ARROW_IS_LEFT (i) && !is_rtl) ||
(!ARROW_IS_LEFT (i) && is_rtl);
if (priv->focus_tab &&
!gtk_notebook_search_page (notebook, priv->focus_tab,
left ? STEP_PREV : STEP_NEXT, TRUE))
{
sensitive = FALSE;
}
gtk_widget_set_sensitive (priv->arrow_widget[i], sensitive);
}
}
static void
gtk_notebook_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
if (!gtk_widget_is_sensitive (widget))
stop_scrolling (GTK_NOTEBOOK (widget));
}
static void
update_arrow_nodes (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
gboolean arrow[4];
const char *up_icon_name;
const char *down_icon_name;
gint i;
if (priv->tab_pos == GTK_POS_LEFT ||
priv->tab_pos == GTK_POS_RIGHT)
{
up_icon_name = "pan-down-symbolic";
down_icon_name = "pan-up-symbolic";
}
else
{
up_icon_name = "pan-end-symbolic";
down_icon_name = "pan-start-symbolic";
}
arrow[0] = TRUE;
arrow[1] = FALSE;
arrow[2] = FALSE;
arrow[3] = TRUE;
for (i = 0; i < 4; i++)
{
if (priv->scrollable && arrow[i])
{
if (priv->arrow_widget[i] == NULL)
{
GtkWidget *next_widget;
GtkStyleContext *context;
switch (i)
{
case 0:
if (priv->arrow_widget[1])
{
next_widget = priv->arrow_widget[1];
break;
}
G_GNUC_FALLTHROUGH;
case 1:
if (priv->children)
{
GtkNotebookPage *page = priv->children->data;
next_widget = page->tab_widget;
break;
}
if (priv->arrow_widget[2])
{
next_widget = priv->arrow_widget[2];
break;
}
G_GNUC_FALLTHROUGH;
case 2:
if (priv->arrow_widget[3])
{
next_widget = priv->arrow_widget[3];
break;
}
G_GNUC_FALLTHROUGH;
case 3:
next_widget = NULL;
break;
default:
g_assert_not_reached ();
next_widget = NULL;
break;
}
priv->arrow_widget[i] = g_object_new (GTK_TYPE_BUTTON,
"css-name", "arrow",
NULL);
context = gtk_widget_get_style_context (priv->arrow_widget[i]);
if (i == ARROW_LEFT_BEFORE || i == ARROW_LEFT_AFTER)
{
gtk_style_context_add_class (context, "down");
gtk_widget_insert_after (priv->arrow_widget[i], priv->tabs_widget, next_widget);
}
else
{
gtk_style_context_add_class (context, "up");
gtk_widget_insert_before (priv->arrow_widget[i], priv->tabs_widget, next_widget);
}
}
if (i == ARROW_LEFT_BEFORE || i == ARROW_LEFT_AFTER)
gtk_button_set_icon_name (GTK_BUTTON (priv->arrow_widget[i]), down_icon_name);
else
gtk_button_set_icon_name (GTK_BUTTON (priv->arrow_widget[i]), up_icon_name);
}
else
{
g_clear_pointer (&priv->arrow_widget[i], gtk_widget_unparent);
}
}
}
static void
gtk_notebook_drag_begin (GtkDragSource *source,
GdkDrag *drag,
GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GdkPaintable *paintable;
if (priv->dnd_timer)
{
g_source_remove (priv->dnd_timer);
priv->dnd_timer = 0;
}
g_assert (priv->cur_page != NULL);
priv->operation = DRAG_OPERATION_DETACH;
tab_drag_end (notebook, priv->cur_page);
paintable = gtk_widget_paintable_new (priv->detached_tab->tab_widget);
gtk_drag_source_set_icon (source, paintable, -2, -2);
g_object_unref (paintable);
}
static void
gtk_notebook_drag_end (GtkDragSource *source,
GdkDrag *drag,
gboolean delete_data,
GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
gtk_notebook_stop_reorder (notebook);
if (priv->rootwindow_drop)
{
GtkNotebook *dest_notebook = NULL;
g_signal_emit (notebook, notebook_signals[CREATE_WINDOW], 0,
priv->detached_tab->child, &dest_notebook);
if (dest_notebook)
do_detach_tab (notebook, dest_notebook, priv->detached_tab->child);
priv->rootwindow_drop = FALSE;
}
else if (priv->detached_tab)
{
gtk_notebook_switch_page (notebook, priv->detached_tab);
}
priv->operation = DRAG_OPERATION_NONE;
}
static GtkNotebook *
gtk_notebook_create_window (GtkNotebook *notebook,
GtkWidget *page)
{
return NULL;
}
static gboolean
gtk_notebook_drag_failed (GtkDragSource *source,
GdkDrag *drag,
GdkDragCancelReason reason,
GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
priv->rootwindow_drop = FALSE;
if (reason == GDK_DRAG_CANCEL_NO_TARGET)
{
GtkNotebook *dest_notebook = NULL;
g_signal_emit (notebook, notebook_signals[CREATE_WINDOW], 0,
priv->detached_tab->child, &dest_notebook);
if (dest_notebook)
do_detach_tab (notebook, dest_notebook, priv->detached_tab->child);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_notebook_switch_tab_timeout (gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GList *switch_tab;
priv->switch_tab_timer = 0;
switch_tab = priv->switch_tab;
priv->switch_tab = NULL;
if (switch_tab)
{
/* FIXME: hack, we don't want the
* focus to move fom the source widget
*/
priv->child_has_focus = FALSE;
gtk_notebook_switch_focus_tab (notebook, switch_tab);
}
return FALSE;
}
static gboolean
gtk_notebook_drag_motion (GtkDropTarget *dest,
int x,
int y)
{
GtkWidget *widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (dest));
GdkDrop *drop = gtk_drop_target_get_drop (dest);
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
graphene_rect_t position;
GtkNotebookArrow arrow;
GdkAtom target, tab_target;
GList *tab;
gboolean retval = FALSE;
arrow = gtk_notebook_get_arrow (notebook, x, y);
if (arrow != ARROW_NONE)
{
priv->click_child = arrow;
gtk_notebook_set_scroll_timer (notebook);
gdk_drop_status (drop, 0);
retval = TRUE;
goto out;
}
stop_scrolling (notebook);
target = gtk_drop_target_find_mimetype (dest);
tab_target = g_intern_static_string ("GTK_NOTEBOOK_TAB");
if (target == tab_target)
{
GQuark group, source_group;
GtkWidget *source_child;
GdkDrag *drag = gdk_drop_get_drag (drop);
retval = TRUE;
if (!drag)
{
gdk_drop_status (drop, 0);
}
else
{
GtkDragSource *drag_source = gtk_drag_get_source (drag);
GtkNotebook *source = GTK_NOTEBOOK (gtk_drag_source_get_origin (drag_source));
g_assert (source->priv->cur_page != NULL);
source_child = source->priv->cur_page->child;
group = notebook->priv->group;
source_group = source->priv->group;
if (group != 0 && group == source_group &&
!(widget == source_child ||
gtk_widget_is_ancestor (widget, source_child)))
{
gdk_drop_status (drop, GDK_ACTION_MOVE);
goto out;
}
else
{
/* it's a tab, but doesn't share
* ID with this notebook */
gdk_drop_status (drop, 0);
}
}
}
if (gtk_notebook_get_tab_area_position (notebook, &position) &&
graphene_rect_contains_point (&position, &(graphene_point_t){x, y}) &&
(tab = get_tab_at_pos (notebook, x, y)))
{
priv->mouse_x = x;
priv->mouse_y = y;
retval = TRUE;
if (tab != priv->switch_tab)
remove_switch_tab_timer (notebook);
priv->switch_tab = tab;
if (!priv->switch_tab_timer)
{
priv->switch_tab_timer = g_timeout_add (TIMEOUT_EXPAND, gtk_notebook_switch_tab_timeout, widget);
g_source_set_name_by_id (priv->switch_tab_timer, "[gtk] gtk_notebook_switch_tab_timeout");
}
}
else
{
remove_switch_tab_timer (notebook);
}
out:
return retval;
}
static void
gtk_notebook_drag_leave (GtkDropTarget *dest)
{
GtkWidget *widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (dest));
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
remove_switch_tab_timer (notebook);
stop_scrolling (notebook);
}
static void
got_page (GObject *source,
GAsyncResult *result,
gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GdkDrop *drop = GDK_DROP (source);
GdkDrag *drag = gdk_drop_get_drag (drop);
GtkWidget *source_widget;
GInputStream *stream;
const char *mime_type;
source_widget = drag ? gtk_drag_source_get_origin (gtk_drag_get_source (drag)) : NULL;
stream = gdk_drop_read_finish (drop, result, &mime_type, NULL);
if (stream)
{
GBytes *bytes;
GtkWidget **child;
bytes = g_input_stream_read_bytes (stream, sizeof (gpointer), NULL, NULL);
child = (gpointer)g_bytes_get_data (bytes, NULL);
do_detach_tab (GTK_NOTEBOOK (source_widget), notebook, *child);
gdk_drop_finish (drop, GDK_ACTION_MOVE);
g_bytes_unref (bytes);
g_object_unref (stream);
}
else
gdk_drop_finish (drop, 0);
}
static gboolean
gtk_notebook_drag_drop (GtkDropTarget *dest,
int x,
int y)
{
GtkWidget *widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (dest));
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GdkDrop *drop = gtk_drop_target_get_drop (dest);
GdkDrag *drag = gdk_drop_get_drag (drop);
GtkWidget *source_widget;
GdkAtom target, tab_target;
source_widget = drag ? gtk_drag_source_get_origin (gtk_drag_get_source (drag)) : NULL;
target = gtk_drop_target_find_mimetype (dest);
tab_target = g_intern_static_string ("GTK_NOTEBOOK_TAB");
if (GTK_IS_NOTEBOOK (source_widget) &&
target == tab_target &&
(gdk_drop_get_actions (drop) & GDK_ACTION_MOVE))
{
notebook->priv->mouse_x = x;
notebook->priv->mouse_y = y;
gdk_drop_read_async (drop, (const char *[]) { "GTK_NOTEBOOK_TAB", NULL }, G_PRIORITY_DEFAULT, NULL, got_page, notebook);
return TRUE;
}
gdk_drop_finish (drop, 0);
return FALSE;
}
/**
* gtk_notebook_detach_tab:
* @notebook: a #GtkNotebook
* @child: a child
*
* Removes the child from the notebook.
*
* This function is very similar to gtk_container_remove(),
* but additionally informs the notebook that the removal
* is happening as part of a tab DND operation, which should
* not be cancelled.
*/
void
gtk_notebook_detach_tab (GtkNotebook *notebook,
GtkWidget *child)
{
notebook->priv->remove_in_detach = TRUE;
gtk_container_remove (GTK_CONTAINER (notebook), child);
notebook->priv->remove_in_detach = FALSE;
}
static void
do_detach_tab (GtkNotebook *from,
GtkNotebook *to,
GtkWidget *child)
{
GtkNotebookPrivate *to_priv = to->priv;
GtkWidget *tab_label, *menu_label;
gboolean tab_expand, tab_fill, reorderable, detachable;
GList *element;
gint page_num;
GtkNotebookPage *page;
menu_label = gtk_notebook_get_menu_label (from, child);
if (menu_label)
g_object_ref (menu_label);
tab_label = gtk_notebook_get_tab_label (from, child);
if (tab_label)
g_object_ref (tab_label);
g_object_ref (child);
page = gtk_notebook_get_page (from, child);
g_object_get (page,
"tab-expand", &tab_expand,
"tab-fill", &tab_fill,
"reorderable", &reorderable,
"detachable", &detachable,
NULL);
gtk_notebook_detach_tab (from, child);
element = get_drop_position (to);
page_num = g_list_position (to_priv->children, element);
gtk_notebook_insert_page_menu (to, child, tab_label, menu_label, page_num);
page = gtk_notebook_get_page (to, child);
g_object_set (page,
"tab-expand", tab_expand,
"tab-fill", tab_fill,
"reorderable", reorderable,
"detachable", detachable,
NULL);
if (child)
g_object_unref (child);
if (tab_label)
g_object_unref (tab_label);
if (menu_label)
g_object_unref (menu_label);
gtk_notebook_set_current_page (to, page_num);
}
static GBytes *
gtk_notebook_drag_data_get (const char *mime_type,
gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GtkSelectionData sdata = { 0, };
sdata.target = g_intern_string (mime_type);
if (sdata.target == g_intern_static_string ("GTK_NOTEBOOK_TAB"))
{
gtk_selection_data_set (&sdata,
sdata.target,
8,
(void*) &priv->detached_tab->child,
sizeof (gpointer));
priv->rootwindow_drop = FALSE;
}
else if (sdata.target == g_intern_static_string ("application/x-rootwindow-drop"))
{
gtk_selection_data_set (&sdata, sdata.target, 8, NULL, 0);
priv->rootwindow_drop = TRUE;
}
return g_bytes_new_take (sdata.data, sdata.length);
}
/* Private GtkContainer Methods :
*
* gtk_notebook_add
* gtk_notebook_remove
* gtk_notebook_focus
* gtk_notebook_set_focus_child
* gtk_notebook_child_type
* gtk_notebook_forall
*/
static void
gtk_notebook_add (GtkContainer *container,
GtkWidget *widget)
{
gtk_notebook_insert_page_menu (GTK_NOTEBOOK (container), widget,
NULL, NULL, -1);
}
static void
gtk_notebook_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (container);
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *children, *list;
gint page_num = 0;
children = priv->children;
while (children)
{
page = children->data;
if (page->child == widget)
break;
page_num++;
children = children->next;
}
if (children == NULL)
return;
g_object_ref (widget);
list = children->next;
gtk_notebook_real_remove (notebook, children);
while (list)
{
g_object_notify (G_OBJECT (list->data), "position");
list = list->next;
}
g_signal_emit (notebook,
notebook_signals[PAGE_REMOVED],
0,
widget,
page_num);
g_object_unref (widget);
}
static gboolean
focus_tabs_in (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->show_tabs && gtk_notebook_has_current_page (notebook))
{
gtk_widget_grab_focus (GTK_WIDGET (notebook));
gtk_notebook_set_focus_child (GTK_CONTAINER (notebook), NULL);
gtk_notebook_switch_focus_tab (notebook,
g_list_find (priv->children,
priv->cur_page));
return TRUE;
}
else
return FALSE;
}
static gboolean
focus_tabs_move (GtkNotebook *notebook,
GtkDirectionType direction,
gint search_direction)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *new_page;
new_page = gtk_notebook_search_page (notebook, priv->focus_tab,
search_direction, TRUE);
if (!new_page)
{
new_page = gtk_notebook_search_page (notebook, NULL,
search_direction, TRUE);
}
if (new_page)
gtk_notebook_switch_focus_tab (notebook, new_page);
else
gtk_widget_error_bell (GTK_WIDGET (notebook));
return TRUE;
}
static gboolean
focus_child_in (GtkNotebook *notebook,
GtkDirectionType direction)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->cur_page)
return gtk_widget_child_focus (priv->cur_page->child, direction);
else
return FALSE;
}
static gboolean
focus_action_in (GtkNotebook *notebook,
gint action,
GtkDirectionType direction)
{
GtkNotebookPrivate *priv = notebook->priv;
if (priv->action_widget[action] &&
gtk_widget_get_visible (priv->action_widget[action]))
return gtk_widget_child_focus (priv->action_widget[action], direction);
else
return FALSE;
}
/* Focus in the notebook can either be on the pages, or on
* the tabs or on the action_widgets.
*/
static gboolean
gtk_notebook_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *old_focus_child;
GtkDirectionType effective_direction;
gint first_action;
gint last_action;
gboolean widget_is_focus;
if (priv->tab_pos == GTK_POS_TOP ||
priv->tab_pos == GTK_POS_LEFT)
{
first_action = ACTION_WIDGET_START;
last_action = ACTION_WIDGET_END;
}
else
{
first_action = ACTION_WIDGET_END;
last_action = ACTION_WIDGET_START;
}
if (priv->focus_out)
{
priv->focus_out = FALSE; /* Clear this to catch the wrap-around case */
return FALSE;
}
widget_is_focus = gtk_widget_is_focus (widget);
old_focus_child = gtk_widget_get_focus_child (widget);
effective_direction = get_effective_direction (notebook, direction);
if (old_focus_child) /* Focus on page child or action widget */
{
if (gtk_widget_child_focus (old_focus_child, direction))
return TRUE;
if (old_focus_child == priv->action_widget[ACTION_WIDGET_START])
{
switch ((guint) effective_direction)
{
case GTK_DIR_DOWN:
return focus_child_in (notebook, GTK_DIR_TAB_FORWARD);
case GTK_DIR_RIGHT:
return focus_tabs_in (notebook);
case GTK_DIR_LEFT:
return FALSE;
case GTK_DIR_UP:
return FALSE;
default:
switch ((guint) direction)
{
case GTK_DIR_TAB_FORWARD:
if ((priv->tab_pos == GTK_POS_RIGHT || priv->tab_pos == GTK_POS_BOTTOM) &&
focus_child_in (notebook, direction))
return TRUE;
return focus_tabs_in (notebook);
case GTK_DIR_TAB_BACKWARD:
return FALSE;
default:
g_assert_not_reached ();
break;
}
}
}
else if (old_focus_child == priv->action_widget[ACTION_WIDGET_END])
{
switch ((guint) effective_direction)
{
case GTK_DIR_DOWN:
return focus_child_in (notebook, GTK_DIR_TAB_FORWARD);
case GTK_DIR_RIGHT:
return FALSE;
case GTK_DIR_LEFT:
return focus_tabs_in (notebook);
case GTK_DIR_UP:
return FALSE;
default:
switch ((guint) direction)
{
case GTK_DIR_TAB_FORWARD:
return FALSE;
case GTK_DIR_TAB_BACKWARD:
if ((priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_LEFT) &&
focus_child_in (notebook, direction))
return TRUE;
return focus_tabs_in (notebook);
default:
g_assert_not_reached ();
break;
}
}
}
else
{
switch ((guint) effective_direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_UP:
/* Focus onto the tabs */
return focus_tabs_in (notebook);
case GTK_DIR_DOWN:
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
return FALSE;
case GTK_DIR_TAB_FORWARD:
return focus_action_in (notebook, last_action, direction);
default:
break;
}
}
}
else if (widget_is_focus) /* Focus was on tabs */
{
switch ((guint) effective_direction)
{
case GTK_DIR_TAB_BACKWARD:
return focus_action_in (notebook, first_action, direction);
case GTK_DIR_UP:
return FALSE;
case GTK_DIR_TAB_FORWARD:
if (focus_child_in (notebook, GTK_DIR_TAB_FORWARD))
return TRUE;
return focus_action_in (notebook, last_action, direction);
case GTK_DIR_DOWN:
/* We use TAB_FORWARD rather than direction so that we focus a more
* predictable widget for the user; users may be using arrow focusing
* in this situation even if they don't usually use arrow focusing.
*/
return focus_child_in (notebook, GTK_DIR_TAB_FORWARD);
case GTK_DIR_LEFT:
return focus_tabs_move (notebook, direction, STEP_PREV);
case GTK_DIR_RIGHT:
return focus_tabs_move (notebook, direction, STEP_NEXT);
default:
break;
}
}
else /* Focus was not on widget */
{
switch ((guint) effective_direction)
{
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
if (focus_action_in (notebook, first_action, direction))
return TRUE;
if (focus_tabs_in (notebook))
return TRUE;
if (focus_action_in (notebook, last_action, direction))
return TRUE;
if (focus_child_in (notebook, direction))
return TRUE;
return FALSE;
case GTK_DIR_TAB_BACKWARD:
if (focus_action_in (notebook, last_action, direction))
return TRUE;
if (focus_child_in (notebook, direction))
return TRUE;
if (focus_tabs_in (notebook))
return TRUE;
if (focus_action_in (notebook, first_action, direction))
return TRUE;
return FALSE;
case GTK_DIR_UP:
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
return focus_child_in (notebook, direction);
default:
break;
}
}
g_assert_not_reached ();
return FALSE;
}
static void
gtk_notebook_set_focus_child (GtkContainer *container,
GtkWidget *child)
{
GtkNotebook *notebook = GTK_NOTEBOOK (container);
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *page_child;
GtkWidget *toplevel;
/* If the old focus widget was within a page of the notebook,
* (child may either be NULL or not in this case), record it
* for future use if we switch to the page with a mnemonic.
*/
toplevel = GTK_WIDGET (gtk_widget_get_root (GTK_WIDGET (container)));
if (GTK_IS_WINDOW (toplevel))
{
page_child = gtk_window_get_focus (GTK_WINDOW (toplevel));
while (page_child)
{
if (gtk_widget_get_parent (page_child) == GTK_WIDGET (container))
{
GList *list = gtk_notebook_find_child (notebook, page_child);
if (list != NULL)
{
GtkNotebookPage *page = list->data;
if (page->last_focus_child)
g_object_remove_weak_pointer (G_OBJECT (page->last_focus_child), (gpointer *)&page->last_focus_child);
page->last_focus_child = gtk_window_get_focus (GTK_WINDOW (toplevel));
g_object_add_weak_pointer (G_OBJECT (page->last_focus_child), (gpointer *)&page->last_focus_child);
break;
}
}
page_child = gtk_widget_get_parent (page_child);
}
}
if (child)
{
g_return_if_fail (GTK_IS_WIDGET (child));
priv->child_has_focus = TRUE;
if (!priv->focus_tab)
{
GList *children;
GtkNotebookPage *page;
children = priv->children;
while (children)
{
page = children->data;
if (page->child == child || page->tab_label == child)
gtk_notebook_switch_focus_tab (notebook, children);
children = children->next;
}
}
}
else
priv->child_has_focus = FALSE;
GTK_CONTAINER_CLASS (gtk_notebook_parent_class)->set_focus_child (container, child);
}
static void
gtk_notebook_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (container);
GtkNotebookPrivate *priv = notebook->priv;
GList *children;
children = priv->children;
while (children)
{
GtkNotebookPage *page;
page = children->data;
children = children->next;
(* callback) (page->child, callback_data);
}
}
static GType
gtk_notebook_child_type (GtkContainer *container)
{
return GTK_TYPE_WIDGET;
}
/* Private GtkNotebook Methods:
*
* gtk_notebook_real_insert_page
*/
static void
page_visible_cb (GtkWidget *child,
GParamSpec *arg,
gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GList *list = gtk_notebook_find_child (notebook, GTK_WIDGET (child));
GtkNotebookPage *page = list->data;
GList *next = NULL;
if (priv->menu && page->menu_label)
{
GtkWidget *parent = gtk_widget_get_parent (page->menu_label);
if (parent)
gtk_widget_set_visible (parent, gtk_widget_get_visible (child));
}
gtk_widget_set_visible (page->tab_widget, gtk_widget_get_visible (child));
if (priv->cur_page == page)
{
if (!gtk_widget_get_visible (child))
{
list = g_list_find (priv->children, priv->cur_page);
if (list)
{
next = gtk_notebook_search_page (notebook, list, STEP_NEXT, TRUE);
if (!next)
next = gtk_notebook_search_page (notebook, list, STEP_PREV, TRUE);
}
if (next)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE_FROM_LIST (next));
}
gtk_widget_set_visible (priv->header_widget, priv->show_tabs && gtk_notebook_has_current_page (notebook));
}
if (!gtk_notebook_has_current_page (notebook) && gtk_widget_get_visible (child))
{
gtk_notebook_switch_page (notebook, page);
/* focus_tab is set in the switch_page method */
gtk_notebook_switch_focus_tab (notebook, priv->focus_tab);
}
}
static void
measure_tab (GtkGizmo *gizmo,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural,
gint *minimum_baseline,
gint *natural_baseline)
{
GtkNotebook *notebook = g_object_get_data (G_OBJECT (gizmo), "notebook");
GtkNotebookPrivate *priv = notebook->priv;
GList *l;
GtkNotebookPage *page = NULL;
for (l = priv->children; l; l = l->next)
{
GtkNotebookPage *p = GTK_NOTEBOOK_PAGE_FROM_LIST (l);
if (p->tab_widget == GTK_WIDGET (gizmo))
{
page = p;
break;
}
}
g_assert (page != NULL);
gtk_widget_measure (page->tab_label,
orientation,
for_size,
minimum, natural,
minimum_baseline, natural_baseline);
}
static void
allocate_tab (GtkGizmo *gizmo,
int width,
int height,
int baseline)
{
GtkNotebook *notebook = g_object_get_data (G_OBJECT (gizmo), "notebook");
GtkNotebookPrivate *priv = notebook->priv;
GList *l;
GtkNotebookPage *page = NULL;
GtkAllocation child_allocation;
for (l = priv->children; l; l = l->next)
{
GtkNotebookPage *p = GTK_NOTEBOOK_PAGE_FROM_LIST (l);
if (p->tab_widget == GTK_WIDGET (gizmo))
{
page = p;
break;
}
}
g_assert (page != NULL);
child_allocation = (GtkAllocation) {0, 0, width, height};
if (!page->fill)
{
if (priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_BOTTOM)
{
gtk_widget_measure (page->tab_label, GTK_ORIENTATION_HORIZONTAL, height,
NULL, &child_allocation.width, NULL, NULL);
if (child_allocation.width > width)
child_allocation.width = width;
else
child_allocation.x += (width - child_allocation.width) / 2;
}
else
{
gtk_widget_measure (page->tab_label, GTK_ORIENTATION_VERTICAL, width,
NULL, &child_allocation.height, NULL, NULL);
if (child_allocation.height > height)
child_allocation.height = height;
else
child_allocation.y += (height - child_allocation.height) / 2;
}
}
gtk_widget_size_allocate (page->tab_label, &child_allocation, baseline);
}
static gint
gtk_notebook_insert_notebook_page (GtkNotebook *notebook,
GtkNotebookPage *page,
int position)
{
GtkNotebookPrivate *priv = notebook->priv;
gint nchildren;
GList *list;
GtkWidget *sibling;
nchildren = g_list_length (priv->children);
if ((position < 0) || (position > nchildren))
position = nchildren;
priv->children = g_list_insert (priv->children, g_object_ref (page), position);
if (position < nchildren)
sibling = GTK_NOTEBOOK_PAGE_FROM_LIST (g_list_nth (priv->children, position))->tab_widget;
else if (priv->arrow_widget[ARROW_LEFT_AFTER])
sibling = priv->arrow_widget[ARROW_LEFT_AFTER];
else
sibling = priv->arrow_widget[ARROW_RIGHT_AFTER];
page->tab_widget = gtk_gizmo_new ("tab", measure_tab, allocate_tab, NULL, NULL);
g_object_set_data (G_OBJECT (page->tab_widget), "notebook", notebook);
gtk_widget_insert_before (page->tab_widget, priv->tabs_widget, sibling);
page->expand = FALSE;
page->fill = TRUE;
if (priv->menu)
gtk_notebook_menu_item_create (notebook, page);
gtk_container_add (GTK_CONTAINER (priv->stack_widget), page->child);
if (page->tab_label)
{
gtk_widget_set_parent (page->tab_label, page->tab_widget);
g_object_set_data (G_OBJECT (page->tab_label), "notebook", notebook);
}
gtk_notebook_update_labels (notebook);
if (!priv->first_tab)
priv->first_tab = priv->children;
if (page->tab_label)
{
if (priv->show_tabs && gtk_widget_get_visible (page->child))
gtk_widget_show (page->tab_label);
else
gtk_widget_hide (page->tab_label);
page->mnemonic_activate_signal =
g_signal_connect (page->tab_label,
"mnemonic-activate",
G_CALLBACK (gtk_notebook_mnemonic_activate_switch_page),
notebook);
}
page->notify_visible_handler = g_signal_connect (page->child, "notify::visible",
G_CALLBACK (page_visible_cb), notebook);
g_signal_emit (notebook, notebook_signals[PAGE_ADDED], 0, page->child, position);
if (!gtk_notebook_has_current_page (notebook))
{
gtk_notebook_switch_page (notebook, page);
/* focus_tab is set in the switch_page method */
gtk_notebook_switch_focus_tab (notebook, priv->focus_tab);
}
g_object_notify (G_OBJECT (page), "tab-expand");
g_object_notify (G_OBJECT (page), "tab-fill");
g_object_notify (G_OBJECT (page), "tab-label");
g_object_notify (G_OBJECT (page), "menu-label");
list = g_list_nth (priv->children, position);
while (list)
{
g_object_notify (G_OBJECT (list->data), "position");
list = list->next;
}
update_arrow_state (notebook);
if (priv->pages)
g_list_model_items_changed (priv->pages, position, 0, 1);
/* The page-added handler might have reordered the pages, re-get the position */
return gtk_notebook_page_num (notebook, page->child);
}
static gint
gtk_notebook_real_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
gint position)
{
GtkNotebookPage *page;
int ret;
page = g_object_new (GTK_TYPE_NOTEBOOK_PAGE,
"child", child,
"tab", tab_label,
"menu", menu_label,
NULL);
ret = gtk_notebook_insert_notebook_page (notebook, page, position);
g_object_unref (page);
return ret;
}
static gboolean
gtk_notebook_timer (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
gboolean retval = FALSE;
if (priv->timer)
{
gtk_notebook_do_arrow (notebook, priv->click_child);
if (priv->need_timer)
{
priv->need_timer = FALSE;
priv->timer = g_timeout_add (TIMEOUT_REPEAT * SCROLL_DELAY_FACTOR,
(GSourceFunc) gtk_notebook_timer,
notebook);
g_source_set_name_by_id (priv->timer, "[gtk] gtk_notebook_timer");
}
else
retval = TRUE;
}
return retval;
}
static void
gtk_notebook_set_scroll_timer (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
if (!priv->timer)
{
priv->timer = g_timeout_add (TIMEOUT_INITIAL,
(GSourceFunc) gtk_notebook_timer,
notebook);
g_source_set_name_by_id (priv->timer, "[gtk] gtk_notebook_timer");
priv->need_timer = TRUE;
}
}
static gint
gtk_notebook_page_compare (gconstpointer a,
gconstpointer b)
{
return (((GtkNotebookPage *) a)->child != b);
}
static GList*
gtk_notebook_find_child (GtkNotebook *notebook,
GtkWidget *child)
{
return g_list_find_custom (notebook->priv->children,
child,
gtk_notebook_page_compare);
}
static void
gtk_notebook_remove_tab_label (GtkNotebook *notebook,
GtkNotebookPage *page)
{
if (page->tab_label)
{
if (page->mnemonic_activate_signal)
g_signal_handler_disconnect (page->tab_label,
page->mnemonic_activate_signal);
page->mnemonic_activate_signal = 0;
if (gtk_widget_get_native (page->tab_label) != gtk_widget_get_native (GTK_WIDGET (notebook)) ||
!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
{
GtkWidget *parent;
/* we hit this condition during dnd of a detached tab */
parent = gtk_widget_get_parent (page->tab_label);
if (GTK_IS_WINDOW (parent))
gtk_container_remove (GTK_CONTAINER (parent), page->tab_label);
else
gtk_widget_unparent (page->tab_label);
}
else
{
gtk_widget_unparent (page->tab_label);
}
page->tab_label = NULL;
}
}
static void
gtk_notebook_real_remove (GtkNotebook *notebook,
GList *list)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList * next_list;
gint need_resize = FALSE;
GtkWidget *tab_label;
gboolean destroying;
int position;
destroying = gtk_widget_in_destruction (GTK_WIDGET (notebook));
next_list = gtk_notebook_search_page (notebook, list, STEP_NEXT, TRUE);
if (!next_list)
next_list = gtk_notebook_search_page (notebook, list, STEP_PREV, TRUE);
priv->children = g_list_remove_link (priv->children, list);
if (priv->cur_page == list->data)
{
priv->cur_page = NULL;
if (next_list && !destroying)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE_FROM_LIST (next_list));
if (priv->operation == DRAG_OPERATION_REORDER && !priv->remove_in_detach)
gtk_notebook_stop_reorder (notebook);
}
if (priv->detached_tab == list->data)
priv->detached_tab = NULL;
if (priv->switch_tab == list)
priv->switch_tab = NULL;
if (list == priv->first_tab)
priv->first_tab = next_list;
if (list == priv->focus_tab && !destroying)
gtk_notebook_switch_focus_tab (notebook, next_list);
page = list->data;
position = g_list_index (priv->children, page);
g_signal_handler_disconnect (page->child, page->notify_visible_handler);
if (gtk_widget_get_visible (page->child) &&
gtk_widget_get_visible (GTK_WIDGET (notebook)))
need_resize = TRUE;
gtk_container_remove (GTK_CONTAINER (priv->stack_widget), page->child);
tab_label = page->tab_label;
if (tab_label)
{
g_object_ref (tab_label);
gtk_notebook_remove_tab_label (notebook, page);
if (destroying)
gtk_widget_destroy (tab_label);
g_object_unref (tab_label);
}
if (priv->menu)
{
GtkWidget *parent = gtk_widget_get_parent (page->menu_label);
gtk_notebook_menu_label_unparent (parent, NULL);
gtk_container_remove (GTK_CONTAINER (priv->menu), parent);
gtk_widget_queue_resize (priv->menu);
}
g_list_free (list);
if (page->last_focus_child)
{
g_object_remove_weak_pointer (G_OBJECT (page->last_focus_child), (gpointer *)&page->last_focus_child);
page->last_focus_child = NULL;
}
gtk_widget_unparent (page->tab_widget);
g_object_unref (page);
gtk_notebook_update_labels (notebook);
if (need_resize)
gtk_widget_queue_resize (GTK_WIDGET (notebook));
if (priv->pages)
g_list_model_items_changed (priv->pages, position, 1, 0);
}
static void
gtk_notebook_update_labels (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *list;
char string[32];
gint page_num = 1;
if (!priv->show_tabs && !priv->menu)
return;
for (list = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, FALSE);
list;
list = gtk_notebook_search_page (notebook, list, STEP_NEXT, FALSE))
{
const char *text;
page = list->data;
g_snprintf (string, sizeof (string), _("Page %u"), page_num++);
if (page->tab_text)
text = page->tab_text;
else
text = string;
if (priv->show_tabs)
{
if (page->default_tab)
{
if (!page->tab_label)
{
page->tab_label = gtk_label_new ("");
g_object_ref_sink (page->tab_label);
g_object_set_data (G_OBJECT (page->tab_label), "notebook", notebook);
gtk_widget_set_parent (page->tab_label, page->tab_widget);
}
gtk_label_set_text (GTK_LABEL (page->tab_label), text);
}
if (page->child && page->tab_label)
gtk_widget_set_visible (page->tab_label, gtk_widget_get_visible (page->child));
}
if (priv->menu && page->default_menu)
{
if (page->menu_text)
text = page->menu_text;
else if (GTK_IS_LABEL (page->tab_label))
text = gtk_label_get_text (GTK_LABEL (page->tab_label));
else
text = string;
gtk_label_set_text (GTK_LABEL (page->menu_label), text);
}
}
}
static GList *
gtk_notebook_search_page (GtkNotebook *notebook,
GList *list,
gint direction,
gboolean find_visible)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page = NULL;
GList *old_list = NULL;
if (list)
page = list->data;
if (!page || direction == STEP_NEXT)
{
if (list)
{
old_list = list;
list = list->next;
}
else
list = priv->children;
while (list)
{
page = list->data;
if (direction == STEP_NEXT &&
(!find_visible ||
(gtk_widget_get_visible (page->child) &&
(!page->tab_label || NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page)))))
return list;
old_list = list;
list = list->next;
}
list = old_list;
}
else
{
list = list->prev;
}
while (list)
{
page = list->data;
if (direction == STEP_PREV &&
(!find_visible ||
(gtk_widget_get_visible (page->child) &&
(!page->tab_label || NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page)))))
return list;
list = list->prev;
}
return NULL;
}
static void
gtk_notebook_snapshot_tabs (GtkGizmo *gizmo,
GtkSnapshot *snapshot)
{
GtkWidget *widget = gtk_widget_get_parent (GTK_WIDGET (gizmo));
GtkNotebook *notebook = GTK_NOTEBOOK (gtk_widget_get_parent (widget));
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GList *children;
gboolean showarrow;
gint step = STEP_PREV;
gboolean is_rtl;
GtkPositionType tab_pos;
guint i;
is_rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
tab_pos = get_effective_tab_pos (notebook);
showarrow = FALSE;
if (!gtk_notebook_has_current_page (notebook))
return;
if (!priv->first_tab)
priv->first_tab = priv->children;
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, priv->cur_page) ||
!gtk_widget_get_mapped (priv->cur_page->tab_label))
{
step = STEP_PREV;
}
else
{
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
step = is_rtl ? STEP_PREV : STEP_NEXT;
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
step = STEP_PREV;
break;
default:
g_assert_not_reached ();
break;
}
}
for (children = priv->children; children; children = children->next)
{
page = children->data;
if (!gtk_widget_get_visible (page->child) ||
page == priv->detached_tab)
continue;
if (!gtk_widget_get_mapped (page->tab_label))
showarrow = TRUE;
/* No point in keeping searching */
if (showarrow)
break;
}
for (children = gtk_notebook_search_page (notebook, NULL, step, TRUE);
children;
children = gtk_notebook_search_page (notebook, children, step, TRUE))
{
page = children->data;
if (page == priv->cur_page)
break;
if (!gtk_notebook_page_tab_label_is_visible (page))
continue;
gtk_widget_snapshot_child (GTK_WIDGET (gizmo), page->tab_widget, snapshot);
}
if (children != NULL)
{
GList *other_order = NULL;
for (children = gtk_notebook_search_page (notebook, children, step, TRUE);
children;
children = gtk_notebook_search_page (notebook, children, step, TRUE))
{
page = children->data;
if (!gtk_notebook_page_tab_label_is_visible (page))
continue;
other_order = g_list_prepend (other_order, page);
}
/* draw them with the opposite order */
for (children = other_order; children; children = children->next)
{
page = children->data;
gtk_widget_snapshot_child (GTK_WIDGET (gizmo), page->tab_widget, snapshot);
}
g_list_free (other_order);
}
if (showarrow && priv->scrollable)
{
for (i = 0; i < 4; i++)
{
if (priv->arrow_widget[i] == NULL)
continue;
gtk_widget_snapshot_child (GTK_WIDGET (gizmo), priv->arrow_widget[i], snapshot);
}
}
if (priv->operation != DRAG_OPERATION_DETACH)
gtk_widget_snapshot_child (GTK_WIDGET (gizmo), priv->cur_page->tab_widget, snapshot);
}
/* Private GtkNotebook Size Allocate Functions:
*
* gtk_notebook_calculate_shown_tabs
* gtk_notebook_calculate_tabs_allocation
* gtk_notebook_calc_tabs
*/
static void
gtk_notebook_allocate_arrows (GtkNotebook *notebook,
GtkAllocation *allocation)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkAllocation arrow_allocation;
gint size1, size2, min, nat;
guint i, ii;
switch (priv->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
arrow_allocation.y = allocation->y;
arrow_allocation.height = allocation->height;
for (i = 0; i < 4; i++)
{
ii = i < 2 ? i : i ^ 1;
if (priv->arrow_widget[ii] == NULL)
continue;
gtk_widget_measure (priv->arrow_widget[ii],
GTK_ORIENTATION_HORIZONTAL,
allocation->height,
&min, &nat,
NULL, NULL);
if (i < 2)
{
arrow_allocation.x = allocation->x;
arrow_allocation.width = min;
gtk_widget_size_allocate (priv->arrow_widget[ii],
&arrow_allocation,
-1);
allocation->x += min;
allocation->width -= min;
}
else
{
arrow_allocation.x = allocation->x + allocation->width - min;
arrow_allocation.width = min;
gtk_widget_size_allocate (priv->arrow_widget[ii],
&arrow_allocation,
-1);
allocation->width -= min;
}
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (priv->arrow_widget[0] || priv->arrow_widget[1])
{
gtk_notebook_measure_arrows (notebook,
GTK_PACK_START,
GTK_ORIENTATION_VERTICAL,
allocation->width,
&min, &nat,
NULL, NULL);
gtk_notebook_distribute_arrow_width (notebook, GTK_PACK_START, allocation->width, &size1, &size2);
arrow_allocation.x = allocation->x;
arrow_allocation.y = allocation->y;
arrow_allocation.width = size1;
arrow_allocation.height = min;
if (priv->arrow_widget[0])
gtk_widget_size_allocate (priv->arrow_widget[0], &arrow_allocation, -1);
arrow_allocation.x += size1;
arrow_allocation.width = size2;
if (priv->arrow_widget[1])
gtk_widget_size_allocate (priv->arrow_widget[1], &arrow_allocation, -1);
allocation->y += min;
allocation->height -= min;
}
if (priv->arrow_widget[2] || priv->arrow_widget[3])
{
gtk_notebook_measure_arrows (notebook,
GTK_PACK_END,
GTK_ORIENTATION_VERTICAL,
allocation->width,
&min, &nat,
NULL, NULL);
gtk_notebook_distribute_arrow_width (notebook, GTK_PACK_END, allocation->width, &size1, &size2);
arrow_allocation.x = allocation->x;
arrow_allocation.y = allocation->y + allocation->height - min;
arrow_allocation.width = size1;
arrow_allocation.height = min;
if (priv->arrow_widget[2])
gtk_widget_size_allocate (priv->arrow_widget[2], &arrow_allocation, -1);
arrow_allocation.x += size1;
arrow_allocation.width = size2;
if (priv->arrow_widget[3])
gtk_widget_size_allocate (priv->arrow_widget[3], &arrow_allocation, -1);
allocation->height -= min;
}
break;
default:
g_assert_not_reached ();
break;
}
}
static void
gtk_notebook_tab_space (GtkNotebook *notebook,
int notebook_width,
int notebook_height,
gboolean *show_arrows,
GtkAllocation *tabs_allocation,
gint *tab_space)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *children;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
children = priv->children;
*tabs_allocation = (GtkAllocation) {0, 0, notebook_width, notebook_height};
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
while (children)
{
GtkNotebookPage *page;
page = children->data;
children = children->next;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
*tab_space += page->requisition.width;
}
break;
case GTK_POS_RIGHT:
case GTK_POS_LEFT:
while (children)
{
GtkNotebookPage *page;
page = children->data;
children = children->next;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
*tab_space += page->requisition.height;
}
break;
default:
g_assert_not_reached ();
break;
}
if (!priv->scrollable)
*show_arrows = FALSE;
else
{
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (*tab_space > tabs_allocation->width)
{
*show_arrows = TRUE;
gtk_notebook_allocate_arrows (notebook, tabs_allocation);
*tab_space = tabs_allocation->width;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (*tab_space > tabs_allocation->height)
{
*show_arrows = TRUE;
gtk_notebook_allocate_arrows (notebook, tabs_allocation);
*tab_space = tabs_allocation->height;
}
break;
default:
g_assert_not_reached ();
break;
}
}
}
static void
gtk_notebook_calculate_shown_tabs (GtkNotebook *notebook,
gboolean show_arrows,
const GtkAllocation *tabs_allocation,
gint tab_space,
GList **last_child,
gint *n,
gint *remaining_space)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *children;
GtkNotebookPage *page;
if (show_arrows) /* first_tab <- focus_tab */
{
*remaining_space = tab_space;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, priv->cur_page) &&
gtk_widget_get_visible (priv->cur_page->child))
{
gtk_notebook_calc_tabs (notebook,
priv->focus_tab,
&(priv->focus_tab),
remaining_space, STEP_NEXT);
}
if (tab_space <= 0 || *remaining_space <= 0)
{
/* show 1 tab */
priv->first_tab = priv->focus_tab;
*last_child = gtk_notebook_search_page (notebook, priv->focus_tab,
STEP_NEXT, TRUE);
*n = 1;
}
else
{
children = NULL;
if (priv->first_tab && priv->first_tab != priv->focus_tab)
{
/* Is first_tab really predecessor of focus_tab? */
page = priv->first_tab->data;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
for (children = priv->focus_tab;
children && children != priv->first_tab;
children = gtk_notebook_search_page (notebook,
children,
STEP_PREV,
TRUE));
}
if (!children)
{
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, priv->cur_page))
priv->first_tab = priv->focus_tab;
else
priv->first_tab = gtk_notebook_search_page (notebook, priv->focus_tab,
STEP_NEXT, TRUE);
}
else
/* calculate shown tabs counting backwards from the focus tab */
gtk_notebook_calc_tabs (notebook,
gtk_notebook_search_page (notebook,
priv->focus_tab,
STEP_PREV,
TRUE),
&(priv->first_tab),
remaining_space,
STEP_PREV);
if (*remaining_space < 0)
{
priv->first_tab =
gtk_notebook_search_page (notebook, priv->first_tab,
STEP_NEXT, TRUE);
if (!priv->first_tab)
priv->first_tab = priv->focus_tab;
*last_child = gtk_notebook_search_page (notebook, priv->focus_tab,
STEP_NEXT, TRUE);
}
else /* focus_tab -> end */
{
if (!priv->first_tab)
priv->first_tab = gtk_notebook_search_page (notebook,
NULL,
STEP_NEXT,
TRUE);
children = NULL;
gtk_notebook_calc_tabs (notebook,
gtk_notebook_search_page (notebook,
priv->focus_tab,
STEP_NEXT,
TRUE),
&children,
remaining_space,
STEP_NEXT);
if (*remaining_space <= 0)
*last_child = children;
else /* start <- first_tab */
{
*last_child = NULL;
children = NULL;
gtk_notebook_calc_tabs (notebook,
gtk_notebook_search_page (notebook,
priv->first_tab,
STEP_PREV,
TRUE),
&children,
remaining_space,
STEP_PREV);
if (*remaining_space == 0)
priv->first_tab = children;
else
priv->first_tab = gtk_notebook_search_page(notebook,
children,
STEP_NEXT,
TRUE);
}
}
if (*remaining_space < 0)
{
/* calculate number of tabs */
*remaining_space = - (*remaining_space);
*n = 0;
for (children = priv->first_tab;
children && children != *last_child;
children = gtk_notebook_search_page (notebook, children,
STEP_NEXT, TRUE))
(*n)++;
}
else
*remaining_space = 0;
}
/* unmap all non-visible tabs */
for (children = gtk_notebook_search_page (notebook, NULL,
STEP_NEXT, TRUE);
children && children != priv->first_tab;
children = gtk_notebook_search_page (notebook, children,
STEP_NEXT, TRUE))
{
page = children->data;
if (page->tab_label &&
NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
gtk_widget_set_child_visible (page->tab_widget, FALSE);
}
for (children = *last_child; children;
children = gtk_notebook_search_page (notebook, children,
STEP_NEXT, TRUE))
{
page = children->data;
if (page->tab_label &&
NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
gtk_widget_set_child_visible (page->tab_widget, FALSE);
}
}
else /* !show_arrows */
{
GtkOrientation tab_expand_orientation;
gint c = 0;
*n = 0;
if (priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_BOTTOM)
{
tab_expand_orientation = GTK_ORIENTATION_HORIZONTAL;
*remaining_space = tabs_allocation->width - tab_space;
}
else
{
tab_expand_orientation = GTK_ORIENTATION_VERTICAL;
*remaining_space = tabs_allocation->height - tab_space;
}
children = priv->children;
priv->first_tab = gtk_notebook_search_page (notebook, NULL,
STEP_NEXT, TRUE);
while (children)
{
page = children->data;
children = children->next;
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) ||
!gtk_widget_get_visible (page->child))
continue;
c++;
if (page->expand ||
(gtk_widget_compute_expand (page->tab_label, tab_expand_orientation)))
(*n)++;
}
}
}
static gboolean
get_allocate_at_bottom (GtkWidget *widget,
gint search_direction)
{
gboolean is_rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
GtkPositionType tab_pos = get_effective_tab_pos (GTK_NOTEBOOK (widget));
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (!is_rtl)
return (search_direction == STEP_PREV);
else
return (search_direction == STEP_NEXT);
case GTK_POS_RIGHT:
case GTK_POS_LEFT:
return (search_direction == STEP_PREV);
default:
g_assert_not_reached ();
return FALSE;
}
}
static void
gtk_notebook_calculate_tabs_allocation (GtkNotebook *notebook,
GList **children,
GList *last_child,
gboolean showarrow,
gint direction,
gint *remaining_space,
gint *expanded_tabs,
const GtkAllocation *allocation)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *widget;
GtkNotebookPage *page;
gboolean allocate_at_bottom;
gint tab_extra_space;
GtkPositionType tab_pos;
gint left_x, right_x, top_y, bottom_y, anchor;
gboolean gap_left, packing_changed;
GtkAllocation child_allocation;
GtkOrientation tab_expand_orientation;
graphene_rect_t drag_bounds;
g_assert (priv->cur_page != NULL);
widget = GTK_WIDGET (notebook);
tab_pos = get_effective_tab_pos (notebook);
allocate_at_bottom = get_allocate_at_bottom (widget, direction);
child_allocation = *allocation;
switch (tab_pos)
{
case GTK_POS_BOTTOM:
case GTK_POS_TOP:
if (allocate_at_bottom)
child_allocation.x += allocation->width;
anchor = child_allocation.x;
break;
case GTK_POS_RIGHT:
case GTK_POS_LEFT:
if (allocate_at_bottom)
child_allocation.y += allocation->height;
anchor = child_allocation.y;
break;
default:
g_assert_not_reached ();
anchor = 0;
break;
}
if (!gtk_widget_compute_bounds (priv->cur_page->tab_widget, priv->cur_page->tab_widget, &drag_bounds))
graphene_rect_init_from_rect (&drag_bounds, graphene_rect_zero ());
left_x = CLAMP (priv->mouse_x - priv->drag_offset_x,
allocation->x, allocation->x + allocation->width - drag_bounds.size.width);
top_y = CLAMP (priv->mouse_y - priv->drag_offset_y,
allocation->y, allocation->y + allocation->height - drag_bounds.size.height);
right_x = left_x + drag_bounds.size.width;
bottom_y = top_y + drag_bounds.size.height;
gap_left = packing_changed = FALSE;
if (priv->tab_pos == GTK_POS_TOP || priv->tab_pos == GTK_POS_BOTTOM)
tab_expand_orientation = GTK_ORIENTATION_HORIZONTAL;
else
tab_expand_orientation = GTK_ORIENTATION_VERTICAL;
while (*children && *children != last_child)
{
page = (*children)->data;
if (direction == STEP_NEXT)
*children = gtk_notebook_search_page (notebook, *children, direction, TRUE);
else
{
*children = (*children)->next;
continue;
}
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page))
continue;
tab_extra_space = 0;
if (*expanded_tabs && (showarrow || page->expand || gtk_widget_compute_expand (page->tab_label, tab_expand_orientation)))
{
tab_extra_space = *remaining_space / *expanded_tabs;
*remaining_space -= tab_extra_space;
(*expanded_tabs)--;
}
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
child_allocation.width = MAX (1, page->requisition.width + tab_extra_space);
/* make sure that the reordered tab doesn't go past the last position */
if (priv->operation == DRAG_OPERATION_REORDER &&
!gap_left && packing_changed)
{
if (!allocate_at_bottom)
{
if (left_x >= anchor)
{
left_x = priv->drag_surface_x = anchor;
anchor += drag_bounds.size.width;
}
}
else
{
if (right_x <= anchor)
{
anchor -= drag_bounds.size.width;
left_x = priv->drag_surface_x = anchor;
}
}
gap_left = TRUE;
}
if (priv->operation == DRAG_OPERATION_REORDER && page == priv->cur_page)
{
priv->drag_surface_x = left_x;
priv->drag_surface_y = child_allocation.y;
}
else
{
if (allocate_at_bottom)
anchor -= child_allocation.width;
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
left_x >= anchor &&
left_x <= anchor + child_allocation.width / 2)
anchor += drag_bounds.size.width;
else if (allocate_at_bottom &&
right_x >= anchor + child_allocation.width / 2 &&
right_x <= anchor + child_allocation.width)
anchor -= drag_bounds.size.width;
}
child_allocation.x = anchor;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
child_allocation.height = MAX (1, page->requisition.height + tab_extra_space);
/* make sure that the reordered tab doesn't go past the last position */
if (priv->operation == DRAG_OPERATION_REORDER &&
!gap_left && packing_changed)
{
if (!allocate_at_bottom && top_y >= anchor)
{
top_y = priv->drag_surface_y = anchor;
anchor += drag_bounds.size.height;
}
gap_left = TRUE;
}
if (priv->operation == DRAG_OPERATION_REORDER && page == priv->cur_page)
{
priv->drag_surface_x = child_allocation.x;
priv->drag_surface_y = top_y;
}
else
{
if (allocate_at_bottom)
anchor -= child_allocation.height;
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
top_y >= anchor &&
top_y <= anchor + child_allocation.height / 2)
anchor += drag_bounds.size.height;
else if (allocate_at_bottom &&
bottom_y >= anchor + child_allocation.height / 2 &&
bottom_y <= anchor + child_allocation.height)
anchor -= drag_bounds.size.height;
}
child_allocation.y = anchor;
}
break;
default:
g_assert_not_reached ();
break;
}
/* set child visible */
if (page->tab_label)
gtk_widget_set_child_visible (page->tab_widget, TRUE);
if (page == priv->cur_page && priv->operation == DRAG_OPERATION_REORDER)
{
GtkAllocation fixed_allocation = { priv->drag_surface_x, priv->drag_surface_y,
child_allocation.width, child_allocation.height };
gtk_widget_size_allocate (page->tab_widget, &fixed_allocation, -1);
}
else if (page == priv->detached_tab && priv->operation == DRAG_OPERATION_DETACH)
{
/* needs to be allocated at 0,0
* to be shown in the drag window */
GtkAllocation fixed_allocation = { 0, 0, child_allocation.width, child_allocation.height };
gtk_widget_size_allocate (page->tab_widget, &fixed_allocation, -1);
}
else if (gtk_notebook_page_tab_label_is_visible (page))
{
gtk_widget_size_allocate (page->tab_widget, &child_allocation, -1);
}
/* calculate whether to leave a gap based on reorder operation or not */
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (priv->operation != DRAG_OPERATION_REORDER || page != priv->cur_page)
{
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
left_x > anchor + child_allocation.width / 2 &&
left_x <= anchor + child_allocation.width)
anchor += drag_bounds.size.width;
else if (allocate_at_bottom &&
right_x >= anchor &&
right_x <= anchor + child_allocation.width / 2)
anchor -= drag_bounds.size.width;
}
if (!allocate_at_bottom)
anchor += child_allocation.width;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (priv->operation != DRAG_OPERATION_REORDER || page != priv->cur_page)
{
if (priv->operation == DRAG_OPERATION_REORDER)
{
if (!allocate_at_bottom &&
top_y >= anchor + child_allocation.height / 2 &&
top_y <= anchor + child_allocation.height)
anchor += drag_bounds.size.height;
else if (allocate_at_bottom &&
bottom_y >= anchor &&
bottom_y <= anchor + child_allocation.height / 2)
anchor -= drag_bounds.size.height;
}
if (!allocate_at_bottom)
anchor += child_allocation.height;
}
break;
default:
g_assert_not_reached ();
break;
}
}
/* Don't move the current tab past the last position during tabs reordering */
if (priv->operation == DRAG_OPERATION_REORDER &&
direction == STEP_NEXT)
{
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (allocate_at_bottom)
anchor -= drag_bounds.size.width;
if ((!allocate_at_bottom && priv->drag_surface_x > anchor) ||
(allocate_at_bottom && priv->drag_surface_x < anchor))
priv->drag_surface_x = anchor;
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (allocate_at_bottom)
anchor -= drag_bounds.size.height;
if ((!allocate_at_bottom && priv->drag_surface_y > anchor) ||
(allocate_at_bottom && priv->drag_surface_y < anchor))
priv->drag_surface_y = anchor;
break;
default:
g_assert_not_reached ();
break;
}
}
}
static void
gtk_notebook_pages_allocate (GtkNotebook *notebook,
int width,
int height)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *children = NULL;
GList *last_child = NULL;
gboolean showarrow = FALSE;
GtkAllocation tabs_allocation;
gint tab_space, remaining_space;
gint expanded_tabs;
if (!priv->show_tabs || !gtk_notebook_has_current_page (notebook))
return;
tab_space = remaining_space = 0;
expanded_tabs = 1;
gtk_notebook_tab_space (notebook, width, height,
&showarrow, &tabs_allocation, &tab_space);
gtk_notebook_calculate_shown_tabs (notebook, showarrow,
&tabs_allocation, tab_space, &last_child,
&expanded_tabs, &remaining_space);
children = priv->first_tab;
gtk_notebook_calculate_tabs_allocation (notebook, &children, last_child,
showarrow, STEP_NEXT,
&remaining_space, &expanded_tabs, &tabs_allocation);
if (children && children != last_child)
{
children = priv->children;
gtk_notebook_calculate_tabs_allocation (notebook, &children, last_child,
showarrow, STEP_PREV,
&remaining_space, &expanded_tabs, &tabs_allocation);
}
if (!priv->first_tab)
priv->first_tab = priv->children;
}
static void
gtk_notebook_calc_tabs (GtkNotebook *notebook,
GList *start,
GList **end,
gint *tab_space,
guint direction)
{
GtkNotebookPage *page = NULL;
GList *children;
GList *last_calculated_child = NULL;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
if (!start)
return;
children = start;
switch (tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
while (children)
{
page = children->data;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
{
*tab_space -= page->requisition.width;
if (*tab_space < 0 || children == *end)
{
if (*tab_space < 0)
{
*tab_space = - (*tab_space +
page->requisition.width);
if (*tab_space == 0 && direction == STEP_PREV)
children = last_calculated_child;
*end = children;
}
return;
}
last_calculated_child = children;
}
if (direction == STEP_NEXT)
children = children->next;
else
children = children->prev;
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
while (children)
{
page = children->data;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
{
*tab_space -= page->requisition.height;
if (*tab_space < 0 || children == *end)
{
if (*tab_space < 0)
{
*tab_space = - (*tab_space + page->requisition.height);
if (*tab_space == 0 && direction == STEP_PREV)
children = last_calculated_child;
*end = children;
}
return;
}
last_calculated_child = children;
}
if (direction == STEP_NEXT)
children = children->next;
else
children = children->prev;
}
break;
default:
g_assert_not_reached ();
break;
}
}
/* Private GtkNotebook Page Switch Methods:
*
* gtk_notebook_real_switch_page
*/
static void
gtk_notebook_real_switch_page (GtkNotebook *notebook,
GtkWidget* child,
guint page_num)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *list = gtk_notebook_find_child (notebook, GTK_WIDGET (child));
GtkNotebookPage *page = GTK_NOTEBOOK_PAGE_FROM_LIST (list);
gboolean child_has_focus;
if (priv->cur_page == page || !gtk_widget_get_visible (GTK_WIDGET (child)))
return;
/* save the value here, changing visibility changes focus */
child_has_focus = priv->child_has_focus;
if (priv->cur_page)
{
GtkRoot *root = gtk_widget_get_root (GTK_WIDGET (notebook));
GtkWidget *focus = gtk_root_get_focus (root);
if (focus)
child_has_focus = gtk_widget_is_ancestor (focus, priv->cur_page->child);
gtk_widget_unset_state_flags (priv->cur_page->tab_widget, GTK_STATE_FLAG_CHECKED);
}
priv->cur_page = page;
gtk_widget_set_state_flags (page->tab_widget, GTK_STATE_FLAG_CHECKED, FALSE);
gtk_widget_set_visible (priv->header_widget, priv->show_tabs);
if (!priv->focus_tab ||
priv->focus_tab->data != (gpointer) priv->cur_page)
priv->focus_tab =
g_list_find (priv->children, priv->cur_page);
gtk_stack_set_visible_child (GTK_STACK (priv->stack_widget), priv->cur_page->child);
gtk_widget_set_child_visible (priv->cur_page->tab_widget, TRUE);
/* If the focus was on the previous page, move it to the first
* element on the new page, if possible, or if not, to the
* notebook itself.
*/
if (child_has_focus)
{
if (priv->cur_page->last_focus_child &&
gtk_widget_is_ancestor (priv->cur_page->last_focus_child, priv->cur_page->child))
gtk_widget_grab_focus (priv->cur_page->last_focus_child);
else
if (!gtk_widget_child_focus (priv->cur_page->child, GTK_DIR_TAB_FORWARD))
gtk_widget_grab_focus (GTK_WIDGET (notebook));
}
update_arrow_state (notebook);
gtk_widget_queue_resize (GTK_WIDGET (notebook));
gtk_widget_queue_resize (priv->tabs_widget);
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_PAGE]);
}
/* Private GtkNotebook Page Switch Functions:
*
* gtk_notebook_switch_page
* gtk_notebook_page_select
* gtk_notebook_switch_focus_tab
* gtk_notebook_menu_switch_page
*/
static void
gtk_notebook_switch_page (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv = notebook->priv;
guint page_num;
if (priv->cur_page == page)
return;
page_num = g_list_index (priv->children, page);
g_signal_emit (notebook,
notebook_signals[SWITCH_PAGE],
0,
page->child,
page_num);
}
static gint
gtk_notebook_page_select (GtkNotebook *notebook,
gboolean move_focus)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
GtkDirectionType dir;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
if (!priv->focus_tab)
return FALSE;
page = priv->focus_tab->data;
gtk_notebook_switch_page (notebook, page);
if (move_focus)
{
switch (tab_pos)
{
case GTK_POS_TOP:
dir = GTK_DIR_DOWN;
break;
case GTK_POS_BOTTOM:
dir = GTK_DIR_UP;
break;
case GTK_POS_LEFT:
dir = GTK_DIR_RIGHT;
break;
case GTK_POS_RIGHT:
dir = GTK_DIR_LEFT;
break;
default:
g_assert_not_reached ();
dir = GTK_DIR_DOWN;
break;
}
if (gtk_widget_child_focus (page->child, dir))
return TRUE;
}
return FALSE;
}
static void
gtk_notebook_switch_focus_tab (GtkNotebook *notebook,
GList *new_child)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page;
if (priv->focus_tab == new_child)
return;
priv->focus_tab = new_child;
if (!priv->show_tabs || !priv->focus_tab)
return;
page = priv->focus_tab->data;
gtk_notebook_switch_page (notebook, page);
}
static void
gtk_notebook_menu_switch_page (GtkWidget *widget,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv;
GtkNotebook *notebook;
GList *children;
guint page_num;
notebook = GTK_NOTEBOOK (gtk_widget_get_ancestor (widget, GTK_TYPE_NOTEBOOK));
priv = notebook->priv;
gtk_popover_popdown (GTK_POPOVER (priv->menu));
if (priv->cur_page == page)
return;
page_num = 0;
children = priv->children;
while (children && children->data != page)
{
children = children->next;
page_num++;
}
g_signal_emit (notebook,
notebook_signals[SWITCH_PAGE],
0,
page->child,
page_num);
}
/* Private GtkNotebook Menu Functions:
*
* gtk_notebook_menu_item_create
* gtk_notebook_menu_item_recreate
* gtk_notebook_menu_label_unparent
*/
static void
gtk_notebook_menu_item_create (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkWidget *menu_item;
if (page->default_menu)
{
if (GTK_IS_LABEL (page->tab_label))
page->menu_label = gtk_label_new (gtk_label_get_text (GTK_LABEL (page->tab_label)));
else
page->menu_label = gtk_label_new ("");
g_object_ref_sink (page->menu_label);
gtk_widget_set_halign (page->menu_label, GTK_ALIGN_START);
gtk_widget_set_valign (page->menu_label, GTK_ALIGN_CENTER);
}
menu_item = gtk_button_new ();
gtk_button_set_relief (GTK_BUTTON (menu_item), GTK_RELIEF_NONE);
gtk_container_add (GTK_CONTAINER (menu_item), page->menu_label);
gtk_container_add (GTK_CONTAINER (priv->menu_box), menu_item);
g_signal_connect (menu_item, "clicked",
G_CALLBACK (gtk_notebook_menu_switch_page), page);
if (!gtk_widget_get_visible (page->child))
gtk_widget_hide (menu_item);
}
static void
gtk_notebook_menu_item_recreate (GtkNotebook *notebook,
GList *list)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkNotebookPage *page = list->data;
GtkWidget *menu_item = gtk_widget_get_parent (page->menu_label);
gtk_container_remove (GTK_CONTAINER (menu_item), page->menu_label);
gtk_container_remove (GTK_CONTAINER (priv->menu), menu_item);
gtk_notebook_menu_item_create (notebook, page);
}
static void
gtk_notebook_menu_label_unparent (GtkWidget *widget,
gpointer data)
{
gtk_widget_unparent (gtk_bin_get_child (GTK_BIN (widget)));
_gtk_bin_set_child (GTK_BIN (widget), NULL);
}
/* Public GtkNotebook Page Insert/Remove Methods :
*
* gtk_notebook_append_page
* gtk_notebook_append_page_menu
* gtk_notebook_prepend_page
* gtk_notebook_prepend_page_menu
* gtk_notebook_insert_page
* gtk_notebook_insert_page_menu
* gtk_notebook_remove_page
*/
/**
* gtk_notebook_append_page:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
*
* Appends a page to @notebook.
*
* Returns: the index (starting from 0) of the appended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_append_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, NULL, -1);
}
/**
* gtk_notebook_append_page_menu:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (allow-none): the widget to use as a label for the
* page-switch menu, if that is enabled. If %NULL, and @tab_label
* is a #GtkLabel or %NULL, then the menu label will be a newly
* created label with the same text as @tab_label; if @tab_label
* is not a #GtkLabel, @menu_label must be specified if the
* page-switch menu is to be used.
*
* Appends a page to @notebook, specifying the widget to use as the
* label in the popup menu.
*
* Returns: the index (starting from 0) of the appended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_append_page_menu (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
g_return_val_if_fail (menu_label == NULL || GTK_IS_WIDGET (menu_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, menu_label, -1);
}
/**
* gtk_notebook_prepend_page:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
*
* Prepends a page to @notebook.
*
* Returns: the index (starting from 0) of the prepended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_prepend_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, NULL, 0);
}
/**
* gtk_notebook_prepend_page_menu:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (allow-none): the widget to use as a label for the
* page-switch menu, if that is enabled. If %NULL, and @tab_label
* is a #GtkLabel or %NULL, then the menu label will be a newly
* created label with the same text as @tab_label; if @tab_label
* is not a #GtkLabel, @menu_label must be specified if the
* page-switch menu is to be used.
*
* Prepends a page to @notebook, specifying the widget to use as the
* label in the popup menu.
*
* Returns: the index (starting from 0) of the prepended
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_prepend_page_menu (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
g_return_val_if_fail (menu_label == NULL || GTK_IS_WIDGET (menu_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, menu_label, 0);
}
/**
* gtk_notebook_insert_page:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @position: the index (starting at 0) at which to insert the page,
* or -1 to append the page after all other pages
*
* Insert a page into @notebook at the given position.
*
* Returns: the index (starting from 0) of the inserted
* page in the notebook, or -1 if function fails
*/
gint
gtk_notebook_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
gint position)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
return gtk_notebook_insert_page_menu (notebook, child, tab_label, NULL, position);
}
static gint
gtk_notebook_page_compare_tab (gconstpointer a,
gconstpointer b)
{
return (((GtkNotebookPage *) a)->tab_label != b);
}
static gboolean
gtk_notebook_mnemonic_activate_switch_page (GtkWidget *child,
gboolean overload,
gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
list = g_list_find_custom (priv->children, child,
gtk_notebook_page_compare_tab);
if (list)
{
GtkNotebookPage *page = list->data;
gtk_widget_grab_focus (GTK_WIDGET (notebook)); /* Do this first to avoid focusing new page */
gtk_notebook_switch_page (notebook, page);
focus_tabs_in (notebook);
}
return TRUE;
}
/**
* gtk_notebook_insert_page_menu:
* @notebook: a #GtkNotebook
* @child: the #GtkWidget to use as the contents of the page
* @tab_label: (allow-none): the #GtkWidget to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (allow-none): the widget to use as a label for the
* page-switch menu, if that is enabled. If %NULL, and @tab_label
* is a #GtkLabel or %NULL, then the menu label will be a newly
* created label with the same text as @tab_label; if @tab_label
* is not a #GtkLabel, @menu_label must be specified if the
* page-switch menu is to be used.
* @position: the index (starting at 0) at which to insert the page,
* or -1 to append the page after all other pages.
*
* Insert a page into @notebook at the given position, specifying
* the widget to use as the label in the popup menu.
*
* Returns: the index (starting from 0) of the inserted
* page in the notebook
*/
gint
gtk_notebook_insert_page_menu (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
gint position)
{
GtkNotebookClass *class;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
g_return_val_if_fail (GTK_IS_WIDGET (child), -1);
g_return_val_if_fail (tab_label == NULL || GTK_IS_WIDGET (tab_label), -1);
g_return_val_if_fail (menu_label == NULL || GTK_IS_WIDGET (menu_label), -1);
class = GTK_NOTEBOOK_GET_CLASS (notebook);
return (class->insert_page) (notebook, child, tab_label, menu_label, position);
}
/**
* gtk_notebook_remove_page:
* @notebook: a #GtkNotebook
* @page_num: the index of a notebook page, starting
* from 0. If -1, the last page will be removed.
*
* Removes a page from the notebook given its index
* in the notebook.
*/
void
gtk_notebook_remove_page (GtkNotebook *notebook,
gint page_num)
{
GtkNotebookPrivate *priv;
GList *list = NULL;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (page_num >= 0)
list = g_list_nth (priv->children, page_num);
else
list = g_list_last (priv->children);
if (list)
gtk_container_remove (GTK_CONTAINER (notebook),
((GtkNotebookPage *) list->data)->child);
}
/* Public GtkNotebook Page Switch Methods :
* gtk_notebook_get_current_page
* gtk_notebook_page_num
* gtk_notebook_set_current_page
* gtk_notebook_next_page
* gtk_notebook_prev_page
*/
/**
* gtk_notebook_get_current_page:
* @notebook: a #GtkNotebook
*
* Returns the page number of the current page.
*
* Returns: the index (starting from 0) of the current
* page in the notebook. If the notebook has no pages,
* then -1 will be returned.
*/
gint
gtk_notebook_get_current_page (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
priv = notebook->priv;
if (!priv->cur_page)
return -1;
return g_list_index (priv->children, priv->cur_page);
}
/**
* gtk_notebook_get_nth_page:
* @notebook: a #GtkNotebook
* @page_num: the index of a page in the notebook, or -1
* to get the last page
*
* Returns the child widget contained in page number @page_num.
*
* Returns: (nullable) (transfer none): the child widget, or %NULL if @page_num
* is out of bounds
*/
GtkWidget*
gtk_notebook_get_nth_page (GtkNotebook *notebook,
gint page_num)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
priv = notebook->priv;
if (page_num >= 0)
list = g_list_nth (priv->children, page_num);
else
list = g_list_last (priv->children);
if (list)
{
page = list->data;
return page->child;
}
return NULL;
}
/**
* gtk_notebook_get_n_pages:
* @notebook: a #GtkNotebook
*
* Gets the number of pages in a notebook.
*
* Returns: the number of pages in the notebook
*/
gint
gtk_notebook_get_n_pages (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), 0);
priv = notebook->priv;
return g_list_length (priv->children);
}
/**
* gtk_notebook_page_num:
* @notebook: a #GtkNotebook
* @child: a #GtkWidget
*
* Finds the index of the page which contains the given child
* widget.
*
* Returns: the index of the page containing @child, or
* -1 if @child is not in the notebook
*/
gint
gtk_notebook_page_num (GtkNotebook *notebook,
GtkWidget *child)
{
GtkNotebookPrivate *priv;
GList *children;
gint num;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
priv = notebook->priv;
num = 0;
children = priv->children;
while (children)
{
GtkNotebookPage *page = children->data;
if (page->child == child)
return num;
children = children->next;
num++;
}
return -1;
}
/**
* gtk_notebook_set_current_page:
* @notebook: a #GtkNotebook
* @page_num: index of the page to switch to, starting from 0.
* If negative, the last page will be used. If greater
* than the number of pages in the notebook, nothing
* will be done.
*
* Switches to the page number @page_num.
*
* Note that due to historical reasons, GtkNotebook refuses
* to switch to a page unless the child widget is visible.
* Therefore, it is recommended to show child widgets before
* adding them to a notebook.
*/
void
gtk_notebook_set_current_page (GtkNotebook *notebook,
gint page_num)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (page_num < 0)
page_num = g_list_length (priv->children) - 1;
list = g_list_nth (priv->children, page_num);
if (list)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE_FROM_LIST (list));
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_PAGE]);
}
/**
* gtk_notebook_next_page:
* @notebook: a #GtkNotebook
*
* Switches to the next page. Nothing happens if the current page is
* the last page.
*/
void
gtk_notebook_next_page (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
list = g_list_find (priv->children, priv->cur_page);
if (!list)
return;
list = gtk_notebook_search_page (notebook, list, STEP_NEXT, TRUE);
if (!list)
return;
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE_FROM_LIST (list));
}
/**
* gtk_notebook_prev_page:
* @notebook: a #GtkNotebook
*
* Switches to the previous page. Nothing happens if the current page
* is the first page.
*/
void
gtk_notebook_prev_page (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
list = g_list_find (priv->children, priv->cur_page);
if (!list)
return;
list = gtk_notebook_search_page (notebook, list, STEP_PREV, TRUE);
if (!list)
return;
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE_FROM_LIST (list));
}
/* Public GtkNotebook/Tab Style Functions
*
* gtk_notebook_set_show_border
* gtk_notebook_get_show_border
* gtk_notebook_set_show_tabs
* gtk_notebook_get_show_tabs
* gtk_notebook_set_tab_pos
* gtk_notebook_get_tab_pos
* gtk_notebook_set_scrollable
* gtk_notebook_get_scrollable
*/
/**
* gtk_notebook_set_show_border:
* @notebook: a #GtkNotebook
* @show_border: %TRUE if a bevel should be drawn around the notebook
*
* Sets whether a bevel will be drawn around the notebook pages.
* This only has a visual effect when the tabs are not shown.
* See gtk_notebook_set_show_tabs().
*/
void
gtk_notebook_set_show_border (GtkNotebook *notebook,
gboolean show_border)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (priv->show_border != show_border)
{
GtkStyleContext *context = gtk_widget_get_style_context (GTK_WIDGET (notebook));
priv->show_border = show_border;
if (show_border)
gtk_style_context_add_class (context, GTK_STYLE_CLASS_FRAME);
else
gtk_style_context_remove_class (context, GTK_STYLE_CLASS_FRAME);
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_SHOW_BORDER]);
}
}
/**
* gtk_notebook_get_show_border:
* @notebook: a #GtkNotebook
*
* Returns whether a bevel will be drawn around the notebook pages.
* See gtk_notebook_set_show_border().
*
* Returns: %TRUE if the bevel is drawn
*/
gboolean
gtk_notebook_get_show_border (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return notebook->priv->show_border;
}
/**
* gtk_notebook_set_show_tabs:
* @notebook: a #GtkNotebook
* @show_tabs: %TRUE if the tabs should be shown
*
* Sets whether to show the tabs for the notebook or not.
*/
void
gtk_notebook_set_show_tabs (GtkNotebook *notebook,
gboolean show_tabs)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *children;
gint i;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
show_tabs = show_tabs != FALSE;
if (priv->show_tabs == show_tabs)
return;
priv->show_tabs = show_tabs;
children = priv->children;
if (!show_tabs)
{
gtk_widget_set_can_focus (GTK_WIDGET (notebook), FALSE);
while (children)
{
page = children->data;
children = children->next;
if (page->default_tab)
{
gtk_widget_destroy (page->tab_label);
page->tab_label = NULL;
}
else
gtk_widget_hide (page->tab_label);
}
gtk_widget_hide (priv->header_widget);
}
else
{
gtk_widget_set_can_focus (GTK_WIDGET (notebook), TRUE);
gtk_notebook_update_labels (notebook);
gtk_widget_show (priv->header_widget);
}
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (priv->action_widget[i])
gtk_widget_set_child_visible (priv->action_widget[i], show_tabs);
}
gtk_notebook_update_tab_pos (notebook);
gtk_widget_queue_resize (GTK_WIDGET (notebook));
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_SHOW_TABS]);
}
/**
* gtk_notebook_get_show_tabs:
* @notebook: a #GtkNotebook
*
* Returns whether the tabs of the notebook are shown.
* See gtk_notebook_set_show_tabs().
*
* Returns: %TRUE if the tabs are shown
*/
gboolean
gtk_notebook_get_show_tabs (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return notebook->priv->show_tabs;
}
static void
gtk_notebook_update_tab_pos (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
GtkLayoutManager *layout;
GtkPositionType tab_pos;
const char *tab_pos_names[] = {
GTK_STYLE_CLASS_LEFT,
GTK_STYLE_CLASS_RIGHT,
GTK_STYLE_CLASS_TOP,
GTK_STYLE_CLASS_BOTTOM
};
gint i;
tab_pos = get_effective_tab_pos (notebook);
for (i = 0; i < G_N_ELEMENTS (tab_pos_names); i++)
{
if (tab_pos == i)
gtk_style_context_add_class (gtk_widget_get_style_context (priv->header_widget),
tab_pos_names[i]);
else
gtk_style_context_remove_class (gtk_widget_get_style_context (priv->header_widget),
tab_pos_names[i]);
}
layout = gtk_widget_get_layout_manager (GTK_WIDGET (notebook));
switch (tab_pos)
{
case GTK_POS_TOP:
gtk_widget_set_hexpand (priv->tabs_widget, TRUE);
gtk_widget_set_vexpand (priv->tabs_widget, FALSE);
gtk_widget_set_hexpand (priv->header_widget, TRUE);
gtk_widget_set_vexpand (priv->header_widget, FALSE);
if (priv->show_tabs)
{
gtk_widget_insert_before (priv->header_widget, GTK_WIDGET (notebook), priv->stack_widget);
gtk_css_node_insert_before (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (priv->header_widget),
gtk_widget_get_css_node (priv->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_VERTICAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->header_widget), GTK_ORIENTATION_HORIZONTAL);
break;
case GTK_POS_BOTTOM:
gtk_widget_set_hexpand (priv->tabs_widget, TRUE);
gtk_widget_set_vexpand (priv->tabs_widget, FALSE);
gtk_widget_set_hexpand (priv->header_widget, TRUE);
gtk_widget_set_vexpand (priv->header_widget, FALSE);
if (priv->show_tabs)
{
gtk_widget_insert_after (priv->header_widget, GTK_WIDGET (notebook), priv->stack_widget);
gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (priv->header_widget),
gtk_widget_get_css_node (priv->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_VERTICAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->header_widget), GTK_ORIENTATION_HORIZONTAL);
break;
case GTK_POS_LEFT:
gtk_widget_set_hexpand (priv->tabs_widget, FALSE);
gtk_widget_set_vexpand (priv->tabs_widget, TRUE);
gtk_widget_set_hexpand (priv->header_widget, FALSE);
gtk_widget_set_vexpand (priv->header_widget, TRUE);
if (priv->show_tabs)
{
gtk_widget_insert_before (priv->header_widget, GTK_WIDGET (notebook), priv->stack_widget);
gtk_css_node_insert_before (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (priv->header_widget),
gtk_widget_get_css_node (priv->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_HORIZONTAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->header_widget), GTK_ORIENTATION_VERTICAL);
break;
case GTK_POS_RIGHT:
gtk_widget_set_hexpand (priv->tabs_widget, FALSE);
gtk_widget_set_vexpand (priv->tabs_widget, TRUE);
gtk_widget_set_hexpand (priv->header_widget, FALSE);
gtk_widget_set_vexpand (priv->header_widget, TRUE);
if (priv->show_tabs)
{
gtk_widget_insert_after (priv->header_widget, GTK_WIDGET (notebook), priv->stack_widget);
gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (priv->header_widget),
gtk_widget_get_css_node (priv->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_HORIZONTAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->header_widget), GTK_ORIENTATION_VERTICAL);
break;
default:
g_assert_not_reached ();
break;
}
}
/**
* gtk_notebook_set_tab_pos:
* @notebook: a #GtkNotebook.
* @pos: the edge to draw the tabs at
*
* Sets the edge at which the tabs for switching pages in the
* notebook are drawn.
*/
void
gtk_notebook_set_tab_pos (GtkNotebook *notebook,
GtkPositionType pos)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (priv->tab_pos != pos)
{
priv->tab_pos = pos;
gtk_widget_queue_resize (GTK_WIDGET (notebook));
gtk_notebook_update_tab_pos (notebook);
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_TAB_POS]);
}
}
/**
* gtk_notebook_get_tab_pos:
* @notebook: a #GtkNotebook
*
* Gets the edge at which the tabs for switching pages in the
* notebook are drawn.
*
* Returns: the edge at which the tabs are drawn
*/
GtkPositionType
gtk_notebook_get_tab_pos (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), GTK_POS_TOP);
return notebook->priv->tab_pos;
}
/**
* gtk_notebook_set_scrollable:
* @notebook: a #GtkNotebook
* @scrollable: %TRUE if scroll arrows should be added
*
* Sets whether the tab label area will have arrows for
* scrolling if there are too many tabs to fit in the area.
*/
void
gtk_notebook_set_scrollable (GtkNotebook *notebook,
gboolean scrollable)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
scrollable = (scrollable != FALSE);
if (priv->scrollable == scrollable)
return;
priv->scrollable = scrollable;
update_arrow_nodes (notebook);
update_arrow_state (notebook);
gtk_widget_queue_resize (GTK_WIDGET (notebook));
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_SCROLLABLE]);
}
/**
* gtk_notebook_get_scrollable:
* @notebook: a #GtkNotebook
*
* Returns whether the tab label area has arrows for scrolling.
* See gtk_notebook_set_scrollable().
*
* Returns: %TRUE if arrows for scrolling are present
*/
gboolean
gtk_notebook_get_scrollable (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
return notebook->priv->scrollable;
}
/* Public GtkNotebook Popup Menu Methods:
*
* gtk_notebook_popup_enable
* gtk_notebook_popup_disable
*/
/**
* gtk_notebook_popup_enable:
* @notebook: a #GtkNotebook
*
* Enables the popup menu: if the user clicks with the right
* mouse button on the tab labels, a menu with all the pages
* will be popped up.
*/
void
gtk_notebook_popup_enable (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (priv->menu)
return;
priv->menu = gtk_popover_menu_new (priv->tabs_widget);
priv->menu_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
gtk_popover_menu_add_submenu (GTK_POPOVER_MENU (priv->menu), priv->menu_box, "main");
for (list = gtk_notebook_search_page (notebook, NULL, STEP_NEXT, FALSE);
list;
list = gtk_notebook_search_page (notebook, list, STEP_NEXT, FALSE))
gtk_notebook_menu_item_create (notebook, list->data);
gtk_notebook_update_labels (notebook);
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_ENABLE_POPUP]);
}
/**
* gtk_notebook_popup_disable:
* @notebook: a #GtkNotebook
*
* Disables the popup menu.
*/
void
gtk_notebook_popup_disable (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
if (!priv->menu)
return;
gtk_container_foreach (GTK_CONTAINER (priv->menu_box),
(GtkCallback) gtk_notebook_menu_label_unparent, NULL);
gtk_widget_destroy (priv->menu);
priv->menu = NULL;
priv->menu_box = NULL;
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_ENABLE_POPUP]);
}
/* Public GtkNotebook Page Properties Functions:
*
* gtk_notebook_get_tab_label
* gtk_notebook_set_tab_label
* gtk_notebook_set_tab_label_text
* gtk_notebook_get_menu_label
* gtk_notebook_set_menu_label
* gtk_notebook_set_menu_label_text
* gtk_notebook_get_tab_reorderable
* gtk_notebook_set_tab_reorderable
* gtk_notebook_get_tab_detachable
* gtk_notebook_set_tab_detachable
*/
/**
* gtk_notebook_get_tab_label:
* @notebook: a #GtkNotebook
* @child: the page
*
* Returns the tab label widget for the page @child.
* %NULL is returned if @child is not in @notebook or
* if no tab label has specifically been set for @child.
*
* Returns: (transfer none) (nullable): the tab label
*/
GtkWidget *
gtk_notebook_get_tab_label (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
list = gtk_notebook_find_child (notebook, child);
g_return_val_if_fail (list != NULL, NULL);
if (GTK_NOTEBOOK_PAGE_FROM_LIST (list)->default_tab)
return NULL;
return GTK_NOTEBOOK_PAGE_FROM_LIST (list)->tab_label;
}
/**
* gtk_notebook_set_tab_label:
* @notebook: a #GtkNotebook
* @child: the page
* @tab_label: (allow-none): the tab label widget to use, or %NULL
* for default tab label
*
* Changes the tab label for @child.
* If %NULL is specified for @tab_label, then the page will
* have the label “page N”.
*/
void
gtk_notebook_set_tab_label (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = notebook->priv;
list = gtk_notebook_find_child (notebook, child);
g_return_if_fail (list != NULL);
/* a NULL pointer indicates a default_tab setting, otherwise
* we need to set the associated label
*/
page = list->data;
if (page->tab_label == tab_label)
return;
gtk_notebook_remove_tab_label (notebook, page);
if (tab_label)
{
page->default_tab = FALSE;
page->tab_label = tab_label;
g_object_set_data (G_OBJECT (page->tab_label), "notebook", notebook);
gtk_widget_set_parent (page->tab_label, page->tab_widget);
}
else
{
page->default_tab = TRUE;
page->tab_label = NULL;
if (priv->show_tabs)
{
gchar string[32];
g_snprintf (string, sizeof(string), _("Page %u"),
g_list_position (priv->children, list));
page->tab_label = gtk_label_new (string);
gtk_widget_set_parent (page->tab_label, page->tab_widget);
g_object_set_data (G_OBJECT (page->tab_label), "notebook", notebook);
}
}
if (page->tab_label)
page->mnemonic_activate_signal =
g_signal_connect (page->tab_label,
"mnemonic-activate",
G_CALLBACK (gtk_notebook_mnemonic_activate_switch_page),
notebook);
if (priv->show_tabs && gtk_widget_get_visible (child))
{
gtk_widget_show (page->tab_label);
gtk_widget_queue_resize (GTK_WIDGET (notebook));
}
if (priv->menu)
gtk_notebook_menu_item_recreate (notebook, list);
g_object_notify (G_OBJECT (page), "tab-label");
}
/**
* gtk_notebook_set_tab_label_text:
* @notebook: a #GtkNotebook
* @child: the page
* @tab_text: the label text
*
* Creates a new label and sets it as the tab label for the page
* containing @child.
*/
void
gtk_notebook_set_tab_label_text (GtkNotebook *notebook,
GtkWidget *child,
const gchar *tab_text)
{
GtkWidget *tab_label = NULL;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (tab_text)
tab_label = gtk_label_new (tab_text);
gtk_notebook_set_tab_label (notebook, child, tab_label);
}
/**
* gtk_notebook_get_tab_label_text:
* @notebook: a #GtkNotebook
* @child: a widget contained in a page of @notebook
*
* Retrieves the text of the tab label for the page containing
* @child.
*
* Returns: (nullable): the text of the tab label, or %NULL if the tab label
* widget is not a #GtkLabel. The string is owned by the widget and must not be
* freed.
*/
const gchar *
gtk_notebook_get_tab_label_text (GtkNotebook *notebook,
GtkWidget *child)
{
GtkWidget *tab_label;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
tab_label = gtk_notebook_get_tab_label (notebook, child);
if (GTK_IS_LABEL (tab_label))
return gtk_label_get_text (GTK_LABEL (tab_label));
else
return NULL;
}
/**
* gtk_notebook_get_menu_label:
* @notebook: a #GtkNotebook
* @child: a widget contained in a page of @notebook
*
* Retrieves the menu label widget of the page containing @child.
*
* Returns: (nullable) (transfer none): the menu label, or %NULL if the
* notebook page does not have a menu label other than the default (the tab
* label).
*/
GtkWidget*
gtk_notebook_get_menu_label (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
list = gtk_notebook_find_child (notebook, child);
g_return_val_if_fail (list != NULL, NULL);
if (GTK_NOTEBOOK_PAGE_FROM_LIST (list)->default_menu)
return NULL;
return GTK_NOTEBOOK_PAGE_FROM_LIST (list)->menu_label;
}
/**
* gtk_notebook_set_menu_label:
* @notebook: a #GtkNotebook
* @child: the child widget
* @menu_label: (allow-none): the menu label, or %NULL for default
*
* Changes the menu label for the page containing @child.
*/
void
gtk_notebook_set_menu_label (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *menu_label)
{
GtkNotebookPrivate *priv;
GtkNotebookPage *page;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = notebook->priv;
list = gtk_notebook_find_child (notebook, child);
g_return_if_fail (list != NULL);
page = list->data;
if (page->menu_label)
{
if (priv->menu)
gtk_container_remove (GTK_CONTAINER (priv->menu),
gtk_widget_get_parent (page->menu_label));
g_clear_object (&page->menu_label);
}
if (menu_label)
{
page->menu_label = menu_label;
g_object_ref_sink (page->menu_label);
page->default_menu = FALSE;
}
else
page->default_menu = TRUE;
if (priv->menu)
gtk_notebook_menu_item_create (notebook, page);
g_object_notify (G_OBJECT (page), "menu-label");
}
/**
* gtk_notebook_set_menu_label_text:
* @notebook: a #GtkNotebook
* @child: the child widget
* @menu_text: the label text
*
* Creates a new label and sets it as the menu label of @child.
*/
void
gtk_notebook_set_menu_label_text (GtkNotebook *notebook,
GtkWidget *child,
const gchar *menu_text)
{
GtkWidget *menu_label = NULL;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (menu_text)
{
menu_label = gtk_label_new (menu_text);
gtk_widget_set_halign (menu_label, GTK_ALIGN_START);
gtk_widget_set_valign (menu_label, GTK_ALIGN_CENTER);
}
gtk_notebook_set_menu_label (notebook, child, menu_label);
}
/**
* gtk_notebook_get_menu_label_text:
* @notebook: a #GtkNotebook
* @child: the child widget of a page of the notebook.
*
* Retrieves the text of the menu label for the page containing
* @child.
*
* Returns: (nullable): the text of the tab label, or %NULL if the widget does
* not have a menu label other than the default menu label, or the menu label
* widget is not a #GtkLabel. The string is owned by the widget and must not be
* freed.
*/
const gchar *
gtk_notebook_get_menu_label_text (GtkNotebook *notebook,
GtkWidget *child)
{
GtkWidget *menu_label;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
menu_label = gtk_notebook_get_menu_label (notebook, child);
if (GTK_IS_LABEL (menu_label))
return gtk_label_get_text (GTK_LABEL (menu_label));
else
return NULL;
}
/* Helper function called when pages are reordered
*/
static void
gtk_notebook_child_reordered (GtkNotebook *notebook,
GtkNotebookPage *page)
{
GtkNotebookPrivate *priv = notebook->priv;
GList *list;
GtkCssNode *sibling;
list = g_list_find (priv->children, page);
if (priv->menu)
gtk_notebook_menu_item_recreate (notebook, list);
if (list->prev)
sibling = gtk_widget_get_css_node (GTK_NOTEBOOK_PAGE_FROM_LIST (list->prev)->tab_widget);
else if (priv->arrow_widget[ARROW_RIGHT_BEFORE])
sibling = gtk_widget_get_css_node (priv->arrow_widget[ARROW_RIGHT_BEFORE]);
else if (priv->arrow_widget[ARROW_LEFT_BEFORE])
sibling = gtk_widget_get_css_node (priv->arrow_widget[ARROW_LEFT_BEFORE]);
else
sibling = NULL;
gtk_css_node_insert_after (gtk_widget_get_css_node (priv->tabs_widget),
gtk_widget_get_css_node (page->tab_widget),
sibling);
gtk_notebook_update_labels (notebook);
gtk_widget_queue_allocate (priv->tabs_widget);
}
/**
* gtk_notebook_reorder_child:
* @notebook: a #GtkNotebook
* @child: the child to move
* @position: the new position, or -1 to move to the end
*
* Reorders the page containing @child, so that it appears in position
* @position. If @position is greater than or equal to the number of
* children in the list or negative, @child will be moved to the end
* of the list.
*/
void
gtk_notebook_reorder_child (GtkNotebook *notebook,
GtkWidget *child,
gint position)
{
GtkNotebookPrivate *priv;
GList *list, *new_list;
GtkNotebookPage *page;
gint old_pos;
gint max_pos;
gint i;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = notebook->priv;
list = gtk_notebook_find_child (notebook, child);
g_return_if_fail (list != NULL);
max_pos = g_list_length (priv->children) - 1;
if (position < 0 || position > max_pos)
position = max_pos;
old_pos = g_list_position (priv->children, list);
if (old_pos == position)
return;
page = list->data;
priv->children = g_list_delete_link (priv->children, list);
priv->children = g_list_insert (priv->children, page, position);
new_list = g_list_nth (priv->children, position);
/* Fix up GList references in GtkNotebook structure */
if (priv->first_tab == list)
priv->first_tab = new_list;
if (priv->focus_tab == list)
priv->focus_tab = new_list;
/* Move around the menu items if necessary */
gtk_notebook_child_reordered (notebook, page);
for (list = priv->children, i = 0; list; list = list->next, i++)
{
if (MIN (old_pos, position) <= i && i <= MAX (old_pos, position))
g_object_notify (G_OBJECT (list->data), "position");
}
g_signal_emit (notebook,
notebook_signals[PAGE_REORDERED],
0,
child,
position);
}
/**
* gtk_notebook_set_group_name:
* @notebook: a #GtkNotebook
* @group_name: (allow-none): the name of the notebook group,
* or %NULL to unset it
*
* Sets a group name for @notebook.
*
* Notebooks with the same name will be able to exchange tabs
* via drag and drop. A notebook with a %NULL group name will
* not be able to exchange tabs with any other notebook.
*/
void
gtk_notebook_set_group_name (GtkNotebook *notebook,
const gchar *group_name)
{
GtkNotebookPrivate *priv;
GQuark group;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
priv = notebook->priv;
group = g_quark_from_string (group_name);
if (priv->group != group)
{
priv->group = group;
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_GROUP_NAME]);
}
}
/**
* gtk_notebook_get_group_name:
* @notebook: a #GtkNotebook
*
* Gets the current group name for @notebook.
*
* Returns: (nullable) (transfer none): the group name, or %NULL if none is set
*/
const gchar *
gtk_notebook_get_group_name (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
return g_quark_to_string (notebook->priv->group);
}
/**
* gtk_notebook_get_tab_reorderable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
*
* Gets whether the tab can be reordered via drag and drop or not.
*
* Returns: %TRUE if the tab is reorderable.
*/
gboolean
gtk_notebook_get_tab_reorderable (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (child), FALSE);
list = gtk_notebook_find_child (notebook, child);
g_return_val_if_fail (list != NULL, FALSE);
return GTK_NOTEBOOK_PAGE_FROM_LIST (list)->reorderable;
}
/**
* gtk_notebook_set_tab_reorderable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
* @reorderable: whether the tab is reorderable or not
*
* Sets whether the notebook tab can be reordered
* via drag and drop or not.
*/
void
gtk_notebook_set_tab_reorderable (GtkNotebook *notebook,
GtkWidget *child,
gboolean reorderable)
{
GtkNotebookPage *page;
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
list = gtk_notebook_find_child (notebook, child);
g_return_if_fail (list != NULL);
page = GTK_NOTEBOOK_PAGE_FROM_LIST (list);
reorderable = reorderable != FALSE;
if (page->reorderable != reorderable)
{
page->reorderable = reorderable;
if (reorderable)
gtk_style_context_add_class (gtk_widget_get_style_context (page->tab_widget),
"reorderable-page");
else
gtk_style_context_remove_class (gtk_widget_get_style_context (page->tab_widget),
"reorderable-page");
g_object_notify (G_OBJECT (page), "reorderable");
}
}
/**
* gtk_notebook_get_tab_detachable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
*
* Returns whether the tab contents can be detached from @notebook.
*
* Returns: %TRUE if the tab is detachable.
*/
gboolean
gtk_notebook_get_tab_detachable (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (child), FALSE);
list = gtk_notebook_find_child (notebook, child);
g_return_val_if_fail (list != NULL, FALSE);
return GTK_NOTEBOOK_PAGE_FROM_LIST (list)->detachable;
}
/**
* gtk_notebook_set_tab_detachable:
* @notebook: a #GtkNotebook
* @child: a child #GtkWidget
* @detachable: whether the tab is detachable or not
*
* Sets whether the tab can be detached from @notebook to another
* notebook or widget.
*
* Note that 2 notebooks must share a common group identificator
* (see gtk_notebook_set_group_name()) to allow automatic tabs
* interchange between them.
*
* If you want a widget to interact with a notebook through DnD
* (i.e.: accept dragged tabs from it) it must be set as a drop
* destination and accept the target “GTK_NOTEBOOK_TAB”. The notebook
* will fill the selection with a GtkWidget** pointing to the child
* widget that corresponds to the dropped tab.
*
* Note that you should use gtk_notebook_detach_tab() instead
* of gtk_container_remove() if you want to remove the tab from
* the source notebook as part of accepting a drop. Otherwise,
* the source notebook will think that the dragged tab was
* removed from underneath the ongoing drag operation, and
* will initiate a drag cancel animation.
*
* |[<!-- language="C" -->
* static void
* on_drag_data_received (GtkWidget *widget,
* GdkDrop *drop,
* GtkSelectionData *data,
* guint time,
* gpointer user_data)
* {
* GtkDrag *drag;
* GtkDragSource *source;
* GtkWidget *notebook;
* GtkWidget **child;
*
* drag = gtk_drop_get_drag (drop);
* source = gtk_drag_get_source (drag);
* notebook = gtk_drag_source_get_origin (source);
* child = (void*) gtk_selection_data_get_data (data);
*
* // process_widget (*child);
*
* gtk_notebook_detach_tab (GTK_NOTEBOOK (notebook), *child);
* }
* ]|
*
* If you want a notebook to accept drags from other widgets,
* you will have to set your own DnD code to do it.
*/
void
gtk_notebook_set_tab_detachable (GtkNotebook *notebook,
GtkWidget *child,
gboolean detachable)
{
GList *list;
GtkNotebookPage *page;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (GTK_IS_WIDGET (child));
list = gtk_notebook_find_child (notebook, child);
g_return_if_fail (list != NULL);
page = GTK_NOTEBOOK_PAGE_FROM_LIST (list);
detachable = detachable != FALSE;
if (page->detachable != detachable)
{
page->detachable = detachable;
g_object_notify (G_OBJECT (page), "detachable");
}
}
/**
* gtk_notebook_get_action_widget:
* @notebook: a #GtkNotebook
* @pack_type: pack type of the action widget to receive
*
* Gets one of the action widgets. See gtk_notebook_set_action_widget().
*
* Returns: (nullable) (transfer none): The action widget with the given
* @pack_type or %NULL when this action widget has not been set
*/
GtkWidget*
gtk_notebook_get_action_widget (GtkNotebook *notebook,
GtkPackType pack_type)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
return notebook->priv->action_widget[pack_type];
}
/**
* gtk_notebook_set_action_widget:
* @notebook: a #GtkNotebook
* @widget: a #GtkWidget
* @pack_type: pack type of the action widget
*
* Sets @widget as one of the action widgets. Depending on the pack type
* the widget will be placed before or after the tabs. You can use
* a #GtkBox if you need to pack more than one widget on the same side.
*
* Note that action widgets are “internal” children of the notebook and thus
* not included in the list returned from gtk_container_foreach().
*/
void
gtk_notebook_set_action_widget (GtkNotebook *notebook,
GtkWidget *widget,
GtkPackType pack_type)
{
GtkNotebookPrivate *priv;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
g_return_if_fail (!widget || GTK_IS_WIDGET (widget));
g_return_if_fail (!widget || gtk_widget_get_parent (widget) == NULL);
priv = notebook->priv;
if (priv->action_widget[pack_type])
gtk_container_remove (GTK_CONTAINER (priv->header_widget), priv->action_widget[pack_type]);
priv->action_widget[pack_type] = widget;
if (widget)
{
gtk_container_add (GTK_CONTAINER (priv->header_widget), widget);
if (pack_type == GTK_PACK_START)
gtk_box_reorder_child_after (GTK_BOX (priv->header_widget), widget, NULL);
else
gtk_box_reorder_child_after (GTK_BOX (priv->header_widget), widget, gtk_widget_get_last_child (priv->header_widget));
gtk_widget_set_child_visible (widget, priv->show_tabs);
}
gtk_widget_queue_resize (GTK_WIDGET (notebook));
}
/**
* gtk_notebook_get_page:
* @notebook: a #GtkNotebook
* @child: a child of @notebook
*
* Returns the #GtkNotebookPage for @child.
*
* Returns: (transfer none): the #GtkNotebookPage for @child
*/
GtkNotebookPage *
gtk_notebook_get_page (GtkNotebook *notebook,
GtkWidget *child)
{
GList *list;
GtkNotebookPage *page = NULL;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
g_return_val_if_fail (GTK_IS_WIDGET (child), NULL);
list = gtk_notebook_find_child (notebook, child);
if (list != NULL)
page = list->data;
return page;
}
/**
* gtk_notebook_page_get_child:
* @page: a #GtkNotebookPage
*
* Returns the notebook child to which @page belongs.
*
* Returns: (transfer none): the child to which @page belongs
*/
GtkWidget *
gtk_notebook_page_get_child (GtkNotebookPage *page)
{
return page->child;
}
#define GTK_TYPE_NOTEBOOK_PAGES (gtk_notebook_pages_get_type ())
G_DECLARE_FINAL_TYPE (GtkNotebookPages, gtk_notebook_pages, GTK, NOTEBOOK_PAGES, GObject)
struct _GtkNotebookPages
{
GObject parent_instance;
GtkNotebook *notebook;
};
struct _GtkNotebookPagesClass
{
GObjectClass parent_class;
};
static GType
gtk_notebook_pages_get_item_type (GListModel *model)
{
return GTK_TYPE_NOTEBOOK_PAGE;
}
static guint
gtk_notebook_pages_get_n_items (GListModel *model)
{
GtkNotebookPages *pages = GTK_NOTEBOOK_PAGES (model);
return g_list_length (pages->notebook->priv->children);
}
static gpointer
gtk_notebook_pages_get_item (GListModel *model,
guint position)
{
GtkNotebookPages *pages = GTK_NOTEBOOK_PAGES (model);
GtkNotebookPage *page;
page = g_list_nth_data (pages->notebook->priv->children, position);
return g_object_ref (page);
}
static void
gtk_notebook_pages_list_model_init (GListModelInterface *iface)
{
iface->get_item_type = gtk_notebook_pages_get_item_type;
iface->get_n_items = gtk_notebook_pages_get_n_items;
iface->get_item = gtk_notebook_pages_get_item;
}
G_DEFINE_TYPE_WITH_CODE (GtkNotebookPages, gtk_notebook_pages, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, gtk_notebook_pages_list_model_init))
static void
gtk_notebook_pages_init (GtkNotebookPages *pages)
{
}
static void
gtk_notebook_pages_class_init (GtkNotebookPagesClass *class)
{
}
static GtkNotebookPages *
gtk_notebook_pages_new (GtkNotebook *notebook)
{
GtkNotebookPages *pages;
pages = g_object_new (GTK_TYPE_NOTEBOOK_PAGES, NULL);
pages->notebook = notebook;
return pages;
}
/**
* gtk_notebook_get_pages:
* @notebook: a #GtkNotebook
*
* Returns a #GListModel that contains the pages of the notebook,
* and can be used to keep an up-to-date view.
*
* Returns: (transfer full): a #GListModel for the notebook's children
*/
GListModel *
gtk_notebook_get_pages (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv = notebook->priv;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
if (priv->pages)
return g_object_ref (priv->pages);
priv->pages = G_LIST_MODEL (gtk_notebook_pages_new (notebook));
g_object_add_weak_pointer (G_OBJECT (priv->pages), (gpointer *)&priv->pages);
return priv->pages;
}
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