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gtk2/gtk/gtknotebook.c
Emmanuele Bassi 7480fb703e a11y: Simplify GtkNotebookAccessible 
Let the GtkNotebook explicitly update the accessible object that the
current page has changed, instead of overriding
GtkWidgetAccessible.notify_gtk.
2020-06-05 20:35:10 +01:00

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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 "gtkbox.h"
#include "gtkboxlayout.h"
#include "gtkbuildable.h"
#include "gtkbutton.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkdroptarget.h"
#include "gtkdragicon.h"
#include "gtkdropcontrollermotion.h"
#include "gtkeventcontrollermotion.h"
#include "gtkgestureclick.h"
#include "gtkgizmoprivate.h"
#include "gtkbuiltiniconprivate.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 "gtkwidgetprivate.h"
#include "gtkdragsource.h"
#include "gtkwidgetpaintable.h"
#include "gtknative.h"
#include "a11y/gtknotebookaccessibleprivate.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 _GtkNotebookClass GtkNotebookClass;
struct _GtkNotebookClass
{
GtkWidgetClass 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 _GtkNotebook
{
GtkWidget container;
GtkNotebookDragOperation operation;
GtkNotebookPage *cur_page;
GtkNotebookPage *detached_tab;
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_page_timer;
GtkNotebookPage *switch_page;
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->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));
}
#define GTK_TYPE_NOTEBOOK_ROOT_CONTENT (gtk_notebook_root_content_get_type ())
#define GTK_NOTEBOOK_ROOT_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_NOTEBOOK_ROOT_CONTENT, GtkNotebookRootContent))
#define GTK_IS_NOTEBOOK_ROOT_CONTENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_NOTEBOOK_ROOT_CONTENT))
typedef struct _GtkNotebookRootContent GtkNotebookRootContent;
typedef struct _GtkNotebookRootContentClass GtkNotebookRootContentClass;
struct _GtkNotebookRootContent
{
GdkContentProvider parent_instance;
GtkNotebook *notebook;
};
struct _GtkNotebookRootContentClass
{
GdkContentProviderClass parent_class;
};
static GdkContentFormats *
gtk_notebook_root_content_ref_formats (GdkContentProvider *provider)
{
return gdk_content_formats_new ((const char *[1]) { "application/x-rootwindow-drop" }, 1);
}
GType gtk_notebook_root_content_get_type (void);
G_DEFINE_TYPE (GtkNotebookRootContent, gtk_notebook_root_content, GDK_TYPE_CONTENT_PROVIDER)
static void
gtk_notebook_root_content_write_mime_type_async (GdkContentProvider *provider,
const char *mime_type,
GOutputStream *stream,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GtkNotebookRootContent *self = GTK_NOTEBOOK_ROOT_CONTENT (provider);
GTask *task;
self->notebook->rootwindow_drop = TRUE;
task = g_task_new (self, cancellable, callback, user_data);
g_task_set_priority (task, io_priority);
g_task_set_source_tag (task, gtk_notebook_root_content_write_mime_type_async);
g_task_return_boolean (task, TRUE);
g_object_unref (task);
}
static gboolean
gtk_notebook_root_content_write_mime_type_finish (GdkContentProvider *provider,
GAsyncResult *result,
GError **error)
{
return g_task_propagate_boolean (G_TASK (result), error);
}
static void
gtk_notebook_root_content_finalize (GObject *object)
{
GtkNotebookRootContent *self = GTK_NOTEBOOK_ROOT_CONTENT (object);
g_object_unref (self->notebook);
G_OBJECT_CLASS (gtk_notebook_root_content_parent_class)->finalize (object);
}
static void
gtk_notebook_root_content_class_init (GtkNotebookRootContentClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GdkContentProviderClass *provider_class = GDK_CONTENT_PROVIDER_CLASS (class);
object_class->finalize = gtk_notebook_root_content_finalize;
provider_class->ref_formats = gtk_notebook_root_content_ref_formats;
provider_class->write_mime_type_async = gtk_notebook_root_content_write_mime_type_async;
provider_class->write_mime_type_finish = gtk_notebook_root_content_write_mime_type_finish;
}
static void
gtk_notebook_root_content_init (GtkNotebookRootContent *self)
{
}
static GdkContentProvider *
gtk_notebook_root_content_new (GtkNotebook *notebook)
{
GtkNotebookRootContent *result;
result = g_object_new (GTK_TYPE_NOTEBOOK_ROOT_CONTENT, NULL);
result->notebook = g_object_ref (notebook);
return GDK_CONTENT_PROVIDER (result);
}
/*** 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_unmap (GtkWidget *widget);
static void gtk_notebook_popup_menu (GtkWidget *widget,
const char *action_name,
GVariant *parameters);
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 void gtk_notebook_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction);
static gboolean gtk_notebook_focus (GtkWidget *widget,
GtkDirectionType direction);
static gboolean gtk_notebook_grab_focus (GtkWidget *widget);
static void gtk_notebook_set_focus_child (GtkWidget *widget,
GtkWidget *child);
/*** Drag and drop Methods ***/
static void gtk_notebook_dnd_finished_cb (GdkDrag *drag,
GtkWidget *widget);
static void gtk_notebook_drag_cancel_cb (GdkDrag *drag,
GdkDragCancelReason reason,
GtkWidget *widget);
static GdkDragAction gtk_notebook_drag_motion(GtkDropTarget *dest,
double x,
double y,
GtkNotebook *notebook);
static gboolean gtk_notebook_drag_drop (GtkDropTarget *dest,
const GValue *value,
double x,
double y,
GtkNotebook *notebook);
static void gtk_notebook_remove (GtkNotebook *notebook,
GtkWidget *widget);
/*** 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);
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_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_notebook_buildable_init))
static void
add_tab_bindings (GtkWidgetClass *widget_class,
GdkModifierType modifiers,
GtkDirectionType direction)
{
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Tab, modifiers,
"move_focus_out",
"(i)", direction);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Tab, modifiers,
"move_focus_out",
"(i)", direction);
}
static void
add_arrow_bindings (GtkWidgetClass *widget_class,
guint keysym,
GtkDirectionType direction)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_widget_class_add_binding_signal (widget_class,
keysym, GDK_CONTROL_MASK,
"move_focus_out",
"(i)", direction);
gtk_widget_class_add_binding_signal (widget_class,
keypad_keysym, GDK_CONTROL_MASK,
"move_focus_out",
"(i)", direction);
}
static void
add_reorder_bindings (GtkWidgetClass *widget_class,
guint keysym,
GtkDirectionType direction,
gboolean move_to_last)
{
guint keypad_keysym = keysym - GDK_KEY_Left + GDK_KEY_KP_Left;
gtk_widget_class_add_binding_signal (widget_class,
keysym, GDK_ALT_MASK,
"reorder_tab",
"(ib)", direction, move_to_last);
gtk_widget_class_add_binding_signal (widget_class,
keypad_keysym, GDK_ALT_MASK,
"reorder_tab",
"(ib)", direction, 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);
gboolean hexpand;
gboolean vexpand;
GList *list;
GtkNotebookPage *page;
hexpand = FALSE;
vexpand = FALSE;
for (list = notebook->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);
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->unmap = gtk_notebook_unmap;
widget_class->grab_notify = gtk_notebook_grab_notify;
widget_class->state_flags_changed = gtk_notebook_state_flags_changed;
widget_class->direction_changed = gtk_notebook_direction_changed;
widget_class->focus = gtk_notebook_focus;
widget_class->grab_focus = gtk_notebook_grab_focus;
widget_class->set_focus_child = gtk_notebook_set_focus_child;
widget_class->compute_expand = gtk_notebook_compute_expand;
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);
/**
* GtkNotebook|menu.popup:
*
* Opens the context menu.
*/
gtk_widget_class_install_action (widget_class, "menu.popup", NULL, gtk_notebook_popup_menu);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_space, 0,
"select-page",
"(b)", FALSE);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Space, 0,
"select-page",
"(b)", FALSE);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Home, 0,
"focus-tab",
"(i)", GTK_NOTEBOOK_TAB_FIRST);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_Home, 0,
"focus-tab",
"(i)", GTK_NOTEBOOK_TAB_FIRST);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_End, 0,
"focus-tab",
"(i)", GTK_NOTEBOOK_TAB_LAST);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_KP_End, 0,
"focus-tab",
"(i)", GTK_NOTEBOOK_TAB_LAST);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_F10, GDK_SHIFT_MASK,
"menu.popup",
NULL);
gtk_widget_class_add_binding_action (widget_class,
GDK_KEY_Menu, 0,
"menu.popup",
NULL);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Page_Up, GDK_CONTROL_MASK,
"change-current-page",
"(i)", -1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Page_Down, GDK_CONTROL_MASK,
"change-current-page",
"(i)", 1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Page_Up, GDK_CONTROL_MASK | GDK_ALT_MASK,
"change-current-page",
"(i)", -1);
gtk_widget_class_add_binding_signal (widget_class,
GDK_KEY_Page_Down, GDK_CONTROL_MASK | GDK_ALT_MASK,
"change-current-page",
"(i)", 1);
add_arrow_bindings (widget_class, GDK_KEY_Up, GTK_DIR_UP);
add_arrow_bindings (widget_class, GDK_KEY_Down, GTK_DIR_DOWN);
add_arrow_bindings (widget_class, GDK_KEY_Left, GTK_DIR_LEFT);
add_arrow_bindings (widget_class, GDK_KEY_Right, GTK_DIR_RIGHT);
add_reorder_bindings (widget_class, GDK_KEY_Up, GTK_DIR_UP, FALSE);
add_reorder_bindings (widget_class, GDK_KEY_Down, GTK_DIR_DOWN, FALSE);
add_reorder_bindings (widget_class, GDK_KEY_Left, GTK_DIR_LEFT, FALSE);
add_reorder_bindings (widget_class, GDK_KEY_Right, GTK_DIR_RIGHT, FALSE);
add_reorder_bindings (widget_class, GDK_KEY_Home, GTK_DIR_LEFT, TRUE);
add_reorder_bindings (widget_class, GDK_KEY_Home, GTK_DIR_UP, TRUE);
add_reorder_bindings (widget_class, GDK_KEY_End, GTK_DIR_RIGHT, TRUE);
add_reorder_bindings (widget_class, GDK_KEY_End, GTK_DIR_DOWN, TRUE);
add_tab_bindings (widget_class, GDK_CONTROL_MASK, GTK_DIR_TAB_FORWARD);
add_tab_bindings (widget_class, 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)
{
GtkEventController *controller;
GtkGesture *gesture;
GtkLayoutManager *layout;
GtkDropTarget *dest;
notebook->cur_page = NULL;
notebook->children = NULL;
notebook->first_tab = NULL;
notebook->focus_tab = NULL;
notebook->menu = NULL;
notebook->show_tabs = TRUE;
notebook->show_border = TRUE;
notebook->tab_pos = GTK_POS_TOP;
notebook->scrollable = FALSE;
notebook->click_child = ARROW_NONE;
notebook->need_timer = 0;
notebook->child_has_focus = FALSE;
notebook->focus_out = FALSE;
notebook->group = 0;
notebook->pressed_button = 0;
notebook->dnd_timer = 0;
notebook->operation = DRAG_OPERATION_NONE;
notebook->detached_tab = NULL;
notebook->has_scrolled = FALSE;
gtk_widget_set_focusable (GTK_WIDGET (notebook), TRUE);
notebook->header_widget = g_object_new (GTK_TYPE_BOX,
"css-name", "header",
NULL);
gtk_widget_add_css_class (notebook->header_widget, GTK_STYLE_CLASS_TOP);
gtk_widget_hide (notebook->header_widget);
gtk_widget_set_parent (notebook->header_widget, GTK_WIDGET (notebook));
notebook->tabs_widget = gtk_gizmo_new ("tabs",
gtk_notebook_measure_tabs,
gtk_notebook_allocate_tabs,
gtk_notebook_snapshot_tabs,
NULL,
(GtkGizmoFocusFunc)gtk_widget_focus_self,
(GtkGizmoGrabFocusFunc)gtk_widget_grab_focus_self);
gtk_widget_set_hexpand (notebook->tabs_widget, TRUE);
gtk_box_append (GTK_BOX (notebook->header_widget), notebook->tabs_widget);
notebook->stack_widget = gtk_stack_new ();
gtk_widget_set_hexpand (notebook->stack_widget, TRUE);
gtk_widget_set_vexpand (notebook->stack_widget, TRUE);
gtk_widget_set_parent (notebook->stack_widget, GTK_WIDGET (notebook));
dest = gtk_drop_target_new (GTK_TYPE_NOTEBOOK_PAGE, GDK_ACTION_MOVE);
gtk_drop_target_set_preload (dest, TRUE);
g_signal_connect (dest, "motion", G_CALLBACK (gtk_notebook_drag_motion), notebook);
g_signal_connect (dest, "drop", G_CALLBACK (gtk_notebook_drag_drop), notebook);
gtk_widget_add_controller (GTK_WIDGET (notebook->tabs_widget), GTK_EVENT_CONTROLLER (dest));
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_widget_add_css_class (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)
{
return notebook->cur_page &&
gtk_widget_get_visible (notebook->cur_page->child);
}
static gboolean
gtk_notebook_select_page (GtkNotebook *notebook,
gboolean move_focus)
{
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && notebook->show_tabs)
{
gtk_notebook_page_select (notebook, move_focus);
return TRUE;
}
else
return FALSE;
}
static gboolean
gtk_notebook_focus_tab (GtkNotebook *notebook,
GtkNotebookTab type)
{
GList *list;
if (gtk_widget_is_focus (GTK_WIDGET (notebook)) && notebook->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)
{
GList *current = NULL;
if (!notebook->show_tabs)
return FALSE;
if (notebook->cur_page)
current = g_list_find (notebook->children, notebook->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)
{
/* 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][notebook->tab_pos][direction];
}
static GtkPositionType
get_effective_tab_pos (GtkNotebook *notebook)
{
if (gtk_widget_get_direction (GTK_WIDGET (notebook)) == GTK_TEXT_DIR_RTL)
{
switch (notebook->tab_pos)
{
case GTK_POS_LEFT:
return GTK_POS_RIGHT;
case GTK_POS_RIGHT:
return GTK_POS_LEFT;
default: ;
}
}
return notebook->tab_pos;
}
static void
gtk_notebook_move_focus_out (GtkNotebook *notebook,
GtkDirectionType direction_type)
{
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);
notebook->focus_out = TRUE;
g_signal_emit_by_name (toplevel, "move-focus", direction_type);
notebook->focus_out = FALSE;
g_object_unref (notebook);
}
static gint
reorder_tab (GtkNotebook *notebook, GList *position, GList *tab)
{
GList *elem;
if (position == tab)
return g_list_position (notebook->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 (notebook->children);
if (elem == tab)
return g_list_position (notebook->children, tab);
/* now actually reorder the tab */
if (notebook->first_tab == tab)
notebook->first_tab = gtk_notebook_search_page (notebook, notebook->first_tab,
STEP_NEXT, TRUE);
notebook->children = g_list_remove_link (notebook->children, tab);
if (!position)
elem = g_list_last (notebook->children);
else
{
elem = position->prev;
position->prev = tab;
}
if (elem)
elem->next = tab;
else
notebook->children = tab;
tab->prev = elem;
tab->next = position;
return g_list_position (notebook->children, tab);
}
static gboolean
gtk_notebook_reorder_tab (GtkNotebook *notebook,
GtkDirectionType direction_type,
gboolean move_to_last)
{
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)) || !notebook->show_tabs)
return FALSE;
if (!gtk_notebook_has_current_page (notebook) ||
!notebook->cur_page->reorderable)
return FALSE;
if (effective_direction != GTK_DIR_LEFT &&
effective_direction != GTK_DIR_RIGHT)
return FALSE;
if (move_to_last)
{
child = notebook->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, notebook->focus_tab,
(effective_direction == GTK_DIR_RIGHT) ? STEP_NEXT : STEP_PREV,
TRUE);
if (!child || child->data == notebook->cur_page)
return FALSE;
old_page_num = g_list_position (notebook->children, notebook->focus_tab);
if (effective_direction == GTK_DIR_RIGHT)
page_num = reorder_tab (notebook, child->next, notebook->focus_tab);
else
page_num = reorder_tab (notebook, child, notebook->focus_tab);
gtk_notebook_child_reordered (notebook, notebook->focus_tab->data);
for (element = notebook->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 *) notebook->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);
switch (prop_id)
{
case PROP_SHOW_TABS:
g_value_set_boolean (value, notebook->show_tabs);
break;
case PROP_SHOW_BORDER:
g_value_set_boolean (value, notebook->show_border);
break;
case PROP_SCROLLABLE:
g_value_set_boolean (value, notebook->scrollable);
break;
case PROP_ENABLE_POPUP:
g_value_set_boolean (value, notebook->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, notebook->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_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
gtk_notebook_finalize (GObject *object)
{
GtkNotebook *notebook = GTK_NOTEBOOK (object);
gtk_widget_unparent (notebook->header_widget);
gtk_widget_unparent (notebook->stack_widget);
G_OBJECT_CLASS (gtk_notebook_parent_class)->finalize (object);
}
static void
gtk_notebook_dispose (GObject *object)
{
GtkNotebook *notebook = GTK_NOTEBOOK (object);
GList *l = notebook->children;
if (notebook->pages)
g_list_model_items_changed (G_LIST_MODEL (notebook->pages), 0, g_list_length (notebook->children), 0);
while (l != NULL)
{
GtkNotebookPage *page = l->data;
l = l->next;
gtk_notebook_remove (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)
{
if (notebook->show_tabs && gtk_notebook_has_current_page (notebook))
{
return gtk_widget_compute_bounds (notebook->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)
{
GtkRequestedSize sizes[2];
if (notebook->arrow_widget[2 * type + 1] == NULL)
{
if (notebook->arrow_widget[2 * type] == NULL)
*out_left = 0;
else
*out_left = size;
*out_right = 0;
}
else if (notebook->arrow_widget[2 * type] == NULL)
{
*out_left = 0;
*out_right = size;
}
else
{
gtk_widget_measure (notebook->arrow_widget[2 * type],
GTK_ORIENTATION_HORIZONTAL,
-1,
&sizes[0].minimum_size, &sizes[0].natural_size,
NULL, NULL);
gtk_widget_measure (notebook->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)
{
gint child1_min, child1_nat;
gint child2_min, child2_nat;
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (notebook->arrow_widget[2 * type])
{
gtk_widget_measure (notebook->arrow_widget[2 * type],
orientation,
for_size,
&child1_min, &child1_nat,
NULL, NULL);
}
else
{
child1_min = child1_nat = 0;
}
if (notebook->arrow_widget[2 * type + 1])
{
gtk_widget_measure (notebook->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 (notebook->arrow_widget[2 * type])
{
gtk_widget_measure (notebook->arrow_widget[2 * type],
orientation,
child1_size,
&child1_min, &child1_nat,
NULL, NULL);
}
else
{
child1_min = child1_nat = 0;
}
if (notebook->arrow_widget[2 * type + 1])
{
gtk_widget_measure (notebook->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)
{
gint tab_width = 0;
gint tab_height = 0;
gint tab_max = 0;
guint vis_pages = 0;
GList *children;
GtkNotebookPage *page;
for (children = notebook->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 (notebook->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 = notebook->children;
if (vis_pages)
{
switch (notebook->tab_pos)
{
case GTK_POS_TOP:
case GTK_POS_BOTTOM:
if (tab_height == 0)
break;
if (notebook->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 (notebook->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 (notebook->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 (notebook->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)
{
GList *children;
if (!notebook->scrollable)
return FALSE;
children = notebook->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)
{
gint i;
if (gtk_notebook_show_arrows (notebook))
{
for (i = 0; i < 4; i++)
{
graphene_rect_t arrow_bounds;
if (notebook->arrow_widget[i] == NULL)
continue;
if (!gtk_widget_compute_bounds (notebook->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)
{
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 (!notebook->focus_tab ||
gtk_notebook_search_page (notebook, notebook->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)
{
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 (notebook->pressed_button)
return FALSE;
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
notebook->pressed_button = button;
notebook->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)
{
graphene_rect_t tabs_bounds;
if (!gtk_widget_compute_bounds (notebook->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)
{
GtkNotebookPage *page;
GList *children;
for (children = notebook->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;
GdkEventSequence *sequence;
GtkNotebookArrow arrow;
GtkNotebookPage *page;
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 (!notebook->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) && notebook->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 (notebook->menu), &rect);
gtk_popover_popup (GTK_POPOVER (notebook->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 != notebook->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;
notebook->pressed_button = button;
notebook->mouse_x = x;
notebook->mouse_y = y;
notebook->drag_begin_x = notebook->mouse_x;
notebook->drag_begin_y = notebook->mouse_y;
/* tab bounds get set to empty, which is fine */
notebook->drag_offset_x = notebook->drag_begin_x;
notebook->drag_offset_y = notebook->drag_begin_y;
if (gtk_widget_compute_bounds (page->tab_widget, GTK_WIDGET (notebook), &tab_bounds))
{
notebook->drag_offset_x -= tab_bounds.origin.x;
notebook->drag_offset_y -= tab_bounds.origin.y;
}
}
}
}
static void
gtk_notebook_popup_menu (GtkWidget *widget,
const char *action_name,
GVariant *parameters)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
if (notebook->menu)
gtk_popover_popup (GTK_POPOVER (notebook->menu));
}
static void
stop_scrolling (GtkNotebook *notebook)
{
if (notebook->timer)
{
g_source_remove (notebook->timer);
notebook->timer = 0;
notebook->need_timer = FALSE;
}
notebook->click_child = ARROW_NONE;
notebook->pressed_button = 0;
}
static GList*
get_drop_position (GtkNotebook *notebook)
{
GList *children, *last_child;
GtkNotebookPage *page;
gboolean is_rtl;
gint x, y;
x = notebook->mouse_x;
y = notebook->mouse_y;
is_rtl = gtk_widget_get_direction ((GtkWidget *) notebook) == GTK_TEXT_DIR_RTL;
last_child = NULL;
for (children = notebook->children; children; children = children->next)
{
page = children->data;
if ((notebook->operation != DRAG_OPERATION_REORDER || page != notebook->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 (notebook->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_widget_add_css_class (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_box_remove (GTK_BOX (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_widget_remove_css_class (page->tab_widget, GTK_STYLE_CLASS_DND);
}
static void
gtk_notebook_stop_reorder (GtkNotebook *notebook)
{
GtkNotebookPage *page;
if (notebook->operation == DRAG_OPERATION_DETACH)
page = notebook->detached_tab;
else
page = notebook->cur_page;
if (!page || !page->tab_label)
return;
notebook->pressed_button = 0;
if (page->reorderable || page->detachable)
{
if (notebook->operation == DRAG_OPERATION_REORDER)
{
gint old_page_num, page_num, i;
GList *element;
element = get_drop_position (notebook);
old_page_num = g_list_position (notebook->children, notebook->focus_tab);
page_num = reorder_tab (notebook, element, notebook->focus_tab);
gtk_notebook_child_reordered (notebook, page);
if (notebook->has_scrolled || old_page_num != page_num)
{
for (element = notebook->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);
}
}
notebook->has_scrolled = FALSE;
tab_drag_end (notebook, page);
notebook->operation = DRAG_OPERATION_NONE;
if (notebook->dnd_timer)
{
g_source_remove (notebook->dnd_timer);
notebook->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;
GdkEventSequence *sequence;
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 (notebook->pressed_button != button)
return;
if (notebook->operation == DRAG_OPERATION_REORDER &&
notebook->cur_page &&
notebook->cur_page->reorderable)
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
static GtkNotebookPointerPosition
get_pointer_position (GtkNotebook *notebook)
{
GtkWidget *widget = GTK_WIDGET (notebook);
graphene_rect_t area;
gint width, height;
gboolean is_rtl;
if (!notebook->scrollable)
return POINTER_BETWEEN;
gtk_notebook_get_tab_area_position (notebook, &area);
width = area.size.width;
height = area.size.height;
if (notebook->tab_pos == GTK_POS_TOP ||
notebook->tab_pos == GTK_POS_BOTTOM)
{
gint x = notebook->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 = notebook->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);
GtkNotebookPointerPosition pointer_position;
GList *element, *first_tab;
pointer_position = get_pointer_position (notebook);
element = get_drop_position (notebook);
reorder_tab (notebook, element, notebook->focus_tab);
first_tab = gtk_notebook_search_page (notebook, notebook->first_tab,
(pointer_position == POINTER_BEFORE) ? STEP_PREV : STEP_NEXT,
TRUE);
if (first_tab && notebook->cur_page)
{
notebook->first_tab = first_tab;
gtk_widget_queue_allocate (notebook->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);
GtkNotebookPage *page;
guint state;
page = notebook->cur_page;
if (!page)
return;
state = gtk_event_controller_get_current_event_state (controller);
if (!(state & GDK_BUTTON1_MASK) &&
notebook->pressed_button != 0)
{
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
notebook->mouse_x = x;
notebook->mouse_y = y;
if (notebook->pressed_button == 0)
return;
if (page->detachable &&
check_threshold (notebook, notebook->mouse_x, notebook->mouse_y))
{
GdkSurface *surface;
GdkDevice *device;
GdkContentProvider *content;
GdkDrag *drag;
GdkPaintable *paintable;
notebook->detached_tab = notebook->cur_page;
surface = gtk_native_get_surface (gtk_widget_get_native (GTK_WIDGET (notebook)));
device = gtk_event_controller_get_current_event_device (controller);
content = gdk_content_provider_new_union ((GdkContentProvider *[2]) {
gtk_notebook_root_content_new (notebook),
gdk_content_provider_new_typed (GTK_TYPE_NOTEBOOK_PAGE, notebook->cur_page)
}, 2);
drag = gdk_drag_begin (surface, device, content, GDK_ACTION_MOVE, notebook->drag_begin_x, notebook->drag_begin_y);
g_object_unref (content);
g_signal_connect (drag, "dnd-finished", G_CALLBACK (gtk_notebook_dnd_finished_cb), notebook);
g_signal_connect (drag, "cancel", G_CALLBACK (gtk_notebook_drag_cancel_cb), notebook);
paintable = gtk_widget_paintable_new (notebook->detached_tab->tab_widget);
gtk_drag_icon_set_from_paintable (drag, paintable, -2, -2);
g_object_unref (paintable);
if (notebook->dnd_timer)
{
g_source_remove (notebook->dnd_timer);
notebook->dnd_timer = 0;
}
notebook->operation = DRAG_OPERATION_DETACH;
tab_drag_end (notebook, notebook->cur_page);
g_object_set_data (G_OBJECT (drag), "gtk-notebook-drag-origin", notebook);
g_object_unref (drag);
return;
}
if (page->reorderable &&
(notebook->operation == DRAG_OPERATION_REORDER ||
gtk_drag_check_threshold (widget, notebook->drag_begin_x, notebook->drag_begin_y,
notebook->mouse_x, notebook->mouse_y)))
{
GtkNotebookPointerPosition pointer_position = get_pointer_position (notebook);
if (pointer_position != POINTER_BETWEEN &&
gtk_notebook_show_arrows (notebook))
{
/* scroll tabs */
if (!notebook->dnd_timer)
{
notebook->has_scrolled = TRUE;
notebook->dnd_timer = g_timeout_add (TIMEOUT_REPEAT * SCROLL_DELAY_FACTOR,
scroll_notebook_timer,
notebook);
g_source_set_name_by_id (notebook->dnd_timer, "[gtk] scroll_notebook_timer");
}
}
else
{
if (notebook->dnd_timer)
{
g_source_remove (notebook->dnd_timer);
notebook->dnd_timer = 0;
}
}
if (notebook->operation != DRAG_OPERATION_REORDER)
{
notebook->operation = DRAG_OPERATION_REORDER;
tab_drag_begin (notebook, page);
}
}
if (notebook->operation == DRAG_OPERATION_REORDER)
gtk_widget_queue_allocate (notebook->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)
{
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 (notebook->arrow_widget[i] == NULL)
continue;
left = (ARROW_IS_LEFT (i) && !is_rtl) ||
(!ARROW_IS_LEFT (i) && is_rtl);
if (notebook->focus_tab &&
!gtk_notebook_search_page (notebook, notebook->focus_tab,
left ? STEP_PREV : STEP_NEXT, TRUE))
{
sensitive = FALSE;
}
gtk_widget_set_sensitive (notebook->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
gtk_notebook_arrow_drag_enter (GtkDropControllerMotion *motion,
double x,
double y,
GtkNotebook *notebook)
{
GtkWidget *arrow_widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (motion));
guint arrow;
for (arrow = 0; arrow < 4; arrow++)
{
if (notebook->arrow_widget[arrow] == arrow_widget)
break;
}
g_assert (arrow != ARROW_NONE);
notebook->click_child = arrow;
gtk_notebook_set_scroll_timer (notebook);
}
static void
gtk_notebook_arrow_drag_leave (GtkDropTarget *target,
GdkDrop *drop,
GtkNotebook *notebook)
{
stop_scrolling (notebook);
}
static void
update_arrow_nodes (GtkNotebook *notebook)
{
gboolean arrow[4];
const char *up_icon_name;
const char *down_icon_name;
gint i;
if (notebook->tab_pos == GTK_POS_LEFT ||
notebook->tab_pos == GTK_POS_RIGHT)
{
up_icon_name = "pan-down-symbolic";
down_icon_name = "pan-up-symbolic";
}
else if (gtk_widget_get_direction (GTK_WIDGET (notebook)) == GTK_TEXT_DIR_LTR)
{
up_icon_name = "pan-end-symbolic";
down_icon_name = "pan-start-symbolic";
}
else
{
up_icon_name = "pan-start-symbolic";
down_icon_name = "pan-end-symbolic";
}
arrow[0] = TRUE;
arrow[1] = FALSE;
arrow[2] = FALSE;
arrow[3] = TRUE;
for (i = 0; i < 4; i++)
{
if (notebook->scrollable && arrow[i])
{
if (notebook->arrow_widget[i] == NULL)
{
GtkWidget *next_widget;
GtkEventController *controller;
switch (i)
{
case 0:
if (notebook->arrow_widget[1])
{
next_widget = notebook->arrow_widget[1];
break;
}
G_GNUC_FALLTHROUGH;
case 1:
if (notebook->children)
{
GtkNotebookPage *page = notebook->children->data;
next_widget = page->tab_widget;
break;
}
if (notebook->arrow_widget[2])
{
next_widget = notebook->arrow_widget[2];
break;
}
G_GNUC_FALLTHROUGH;
case 2:
if (notebook->arrow_widget[3])
{
next_widget = notebook->arrow_widget[3];
break;
}
G_GNUC_FALLTHROUGH;
case 3:
next_widget = NULL;
break;
default:
g_assert_not_reached ();
next_widget = NULL;
break;
}
notebook->arrow_widget[i] = g_object_new (GTK_TYPE_BUTTON,
"css-name", "arrow",
NULL);
controller = gtk_drop_controller_motion_new ();
g_signal_connect (controller, "enter", G_CALLBACK (gtk_notebook_arrow_drag_enter), notebook);
g_signal_connect (controller, "leave", G_CALLBACK (gtk_notebook_arrow_drag_leave), notebook);
gtk_widget_add_controller (notebook->arrow_widget[i], controller);
if (i == ARROW_LEFT_BEFORE || i == ARROW_LEFT_AFTER)
{
gtk_widget_add_css_class (notebook->arrow_widget[i], "down");
gtk_widget_insert_after (notebook->arrow_widget[i], notebook->tabs_widget, next_widget);
}
else
{
gtk_widget_add_css_class (notebook->arrow_widget[i], "up");
gtk_widget_insert_before (notebook->arrow_widget[i], notebook->tabs_widget, next_widget);
}
}
if (i == ARROW_LEFT_BEFORE || i == ARROW_LEFT_AFTER)
gtk_button_set_icon_name (GTK_BUTTON (notebook->arrow_widget[i]), down_icon_name);
else
gtk_button_set_icon_name (GTK_BUTTON (notebook->arrow_widget[i]), up_icon_name);
}
else
{
g_clear_pointer (&notebook->arrow_widget[i], gtk_widget_unparent);
}
}
}
static void
gtk_notebook_direction_changed (GtkWidget *widget,
GtkTextDirection previous_direction)
{
update_arrow_nodes (GTK_NOTEBOOK (widget));
}
static void
gtk_notebook_dnd_finished_cb (GdkDrag *drag,
GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
gtk_notebook_stop_reorder (notebook);
if (notebook->rootwindow_drop)
{
GtkNotebook *dest_notebook = NULL;
g_signal_emit (notebook, notebook_signals[CREATE_WINDOW], 0,
notebook->detached_tab->child, &dest_notebook);
if (dest_notebook)
do_detach_tab (notebook, dest_notebook, notebook->detached_tab->child);
notebook->rootwindow_drop = FALSE;
}
else if (notebook->detached_tab)
{
gtk_notebook_switch_page (notebook, notebook->detached_tab);
}
notebook->operation = DRAG_OPERATION_NONE;
}
static GtkNotebook *
gtk_notebook_create_window (GtkNotebook *notebook,
GtkWidget *page)
{
return NULL;
}
static void
gtk_notebook_drag_cancel_cb (GdkDrag *drag,
GdkDragCancelReason reason,
GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
notebook->rootwindow_drop = FALSE;
if (reason == GDK_DRAG_CANCEL_NO_TARGET)
{
GtkNotebook *dest_notebook = NULL;
g_signal_emit (notebook, notebook_signals[CREATE_WINDOW], 0,
notebook->detached_tab->child, &dest_notebook);
if (dest_notebook)
do_detach_tab (notebook, dest_notebook, notebook->detached_tab->child);
}
}
static gboolean
gtk_notebook_switch_page_timeout (gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GtkNotebookPage *switch_page;
notebook->switch_page_timer = 0;
switch_page = notebook->switch_page;
notebook->switch_page = NULL;
if (switch_page)
{
/* FIXME: hack, we don't want the
* focus to move fom the source widget
*/
notebook->child_has_focus = FALSE;
gtk_notebook_switch_focus_tab (notebook,
g_list_find (notebook->children,
switch_page));
}
return FALSE;
}
static gboolean
gtk_notebook_can_drag_from (GtkNotebook *self,
GtkNotebook *other,
GtkNotebookPage *page)
{
/* always allow dragging inside self */
if (self == other)
return TRUE;
/* if the groups don't match, fail */
if (self->group == 0 ||
self->group != other->group)
return FALSE;
/* Check that the dragged page is not a parent of the notebook
* being dragged into */
if (GTK_WIDGET (self) == page->child ||
gtk_widget_is_ancestor (GTK_WIDGET (self), GTK_WIDGET (page->child)) ||
GTK_WIDGET (self) == page->tab_label ||
gtk_widget_is_ancestor (GTK_WIDGET (self), GTK_WIDGET (page->tab_label)))
return FALSE;
return TRUE;
}
static GdkDragAction
gtk_notebook_drag_motion (GtkDropTarget *dest,
double x,
double y,
GtkNotebook *notebook)
{
GdkDrag *drag = gdk_drop_get_drag (gtk_drop_target_get_drop (dest));
GtkNotebook *source;
notebook->mouse_x = x;
notebook->mouse_y = y;
if (!drag)
return 0;
source = GTK_NOTEBOOK (g_object_get_data (G_OBJECT (drag), "gtk-notebook-drag-origin"));
g_assert (source->cur_page != NULL);
if (!gtk_notebook_can_drag_from (notebook, source, source->cur_page))
return 0;
return GDK_ACTION_MOVE;
}
static gboolean
gtk_notebook_drag_drop (GtkDropTarget *dest,
const GValue *value,
double x,
double y,
GtkNotebook *self)
{
GdkDrag *drag = gdk_drop_get_drag (gtk_drop_target_get_drop (dest));
GtkNotebook *source;
GtkNotebookPage *page = g_value_get_object (value);
source = drag ? g_object_get_data (G_OBJECT (drag), "gtk-notebook-drag-origin") : NULL;
if (!source || !gtk_notebook_can_drag_from (self, source, source->cur_page))
return FALSE;
self->mouse_x = x;
self->mouse_y = y;
do_detach_tab (source, self, page->child);
return TRUE;
}
/**
* 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->remove_in_detach = TRUE;
gtk_notebook_remove (notebook, child);
notebook->remove_in_detach = FALSE;
}
static void
do_detach_tab (GtkNotebook *from,
GtkNotebook *to,
GtkWidget *child)
{
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->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);
}
/* Private GtkContainer Methods :
*
* gtk_notebook_remove
* gtk_notebook_focus
* gtk_notebook_set_focus_child
*/
static void
gtk_notebook_remove (GtkNotebook *notebook,
GtkWidget *widget)
{
GtkNotebookPage *page;
GList *children, *list;
gint page_num = 0;
children = notebook->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)
{
if (notebook->show_tabs && gtk_notebook_has_current_page (notebook))
{
gtk_widget_grab_focus (GTK_WIDGET (notebook));
gtk_notebook_set_focus_child (GTK_WIDGET (notebook), NULL);
gtk_notebook_switch_focus_tab (notebook,
g_list_find (notebook->children,
notebook->cur_page));
return TRUE;
}
else
return FALSE;
}
static gboolean
focus_tabs_move (GtkNotebook *notebook,
GtkDirectionType direction,
gint search_direction)
{
GList *new_page;
new_page = gtk_notebook_search_page (notebook, notebook->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)
{
if (notebook->cur_page)
return gtk_widget_child_focus (notebook->cur_page->child, direction);
else
return FALSE;
}
static gboolean
focus_action_in (GtkNotebook *notebook,
gint action,
GtkDirectionType direction)
{
if (notebook->action_widget[action] &&
gtk_widget_get_visible (notebook->action_widget[action]))
return gtk_widget_child_focus (notebook->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);
GtkWidget *old_focus_child;
GtkDirectionType effective_direction;
gint first_action;
gint last_action;
gboolean widget_is_focus;
if (notebook->tab_pos == GTK_POS_TOP ||
notebook->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 (notebook->focus_out)
{
notebook->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);
if (old_focus_child)
old_focus_child = gtk_widget_get_focus_child (old_focus_child);
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 == notebook->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 ((notebook->tab_pos == GTK_POS_RIGHT || notebook->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 == notebook->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 ((notebook->tab_pos == GTK_POS_TOP || notebook->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 gboolean
gtk_notebook_grab_focus (GtkWidget *widget)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
if (notebook->show_tabs)
return gtk_widget_grab_focus_self (widget);
else
return gtk_widget_grab_focus_child (widget);
}
static void
gtk_notebook_set_focus_child (GtkWidget *widget,
GtkWidget *child)
{
GtkNotebook *notebook = GTK_NOTEBOOK (widget);
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 (widget));
if (GTK_IS_WINDOW (toplevel))
{
page_child = gtk_window_get_focus (GTK_WINDOW (toplevel));
while (page_child)
{
if (gtk_widget_get_parent (page_child) == widget)
{
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));
notebook->child_has_focus = TRUE;
if (!notebook->focus_tab)
{
GList *children;
GtkNotebookPage *page;
children = notebook->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
notebook->child_has_focus = FALSE;
GTK_WIDGET_CLASS (gtk_notebook_parent_class)->set_focus_child (widget, child);
}
/* Private GtkNotebook Methods:
*
* gtk_notebook_real_insert_page
*/
static void
page_visible_cb (GtkWidget *child,
GParamSpec *arg,
gpointer data)
{
GtkNotebook *notebook = GTK_NOTEBOOK (data);
GList *list = gtk_notebook_find_child (notebook, GTK_WIDGET (child));
GtkNotebookPage *page = list->data;
GList *next = NULL;
if (notebook->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 (notebook->cur_page == page)
{
if (!gtk_widget_get_visible (child))
{
list = g_list_find (notebook->children, notebook->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 (notebook->header_widget, notebook->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, notebook->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");
GList *l;
GtkNotebookPage *page = NULL;
for (l = notebook->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");
GList *l;
GtkNotebookPage *page = NULL;
GtkAllocation child_allocation;
for (l = notebook->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 (notebook->tab_pos == GTK_POS_TOP || notebook->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 void
gtk_notebook_tab_drop_enter (GtkEventController *controller,
double x,
double y,
GtkNotebookPage *page)
{
GtkWidget *widget = gtk_event_controller_get_widget (controller);
GtkNotebook *notebook = g_object_get_data (G_OBJECT (widget), "notebook");
g_assert (!notebook->switch_page_timer);
notebook->switch_page = page;
notebook->switch_page_timer = g_timeout_add (TIMEOUT_EXPAND, gtk_notebook_switch_page_timeout, notebook);
g_source_set_name_by_id (notebook->switch_page_timer, "[gtk] gtk_notebook_switch_page_timeout");
}
static void
gtk_notebook_tab_drop_leave (GtkEventController *controller,
GtkNotebookPage *page)
{
GtkWidget *widget = gtk_event_controller_get_widget (controller);
GtkNotebook *notebook = g_object_get_data (G_OBJECT (widget), "notebook");
g_clear_handle_id (&notebook->switch_page_timer, g_source_remove);
}
static gint
gtk_notebook_insert_notebook_page (GtkNotebook *notebook,
GtkNotebookPage *page,
int position)
{
gint nchildren;
GList *list;
GtkWidget *sibling;
GtkEventController *controller;
nchildren = g_list_length (notebook->children);
if ((position < 0) || (position > nchildren))
position = nchildren;
notebook->children = g_list_insert (notebook->children, g_object_ref (page), position);
if (position < nchildren)
sibling = GTK_NOTEBOOK_PAGE_FROM_LIST (g_list_nth (notebook->children, position))->tab_widget;
else if (notebook->arrow_widget[ARROW_LEFT_AFTER])
sibling = notebook->arrow_widget[ARROW_LEFT_AFTER];
else
sibling = notebook->arrow_widget[ARROW_RIGHT_AFTER];
page->tab_widget = gtk_gizmo_new ("tab", measure_tab, allocate_tab, NULL, NULL, NULL, NULL);
g_object_set_data (G_OBJECT (page->tab_widget), "notebook", notebook);
gtk_widget_insert_before (page->tab_widget, notebook->tabs_widget, sibling);
controller = gtk_drop_controller_motion_new ();
g_signal_connect (controller, "enter", G_CALLBACK (gtk_notebook_tab_drop_enter), page);
g_signal_connect (controller, "leave", G_CALLBACK (gtk_notebook_tab_drop_leave), page);
gtk_widget_add_controller (page->tab_widget, controller);
page->expand = FALSE;
page->fill = TRUE;
if (notebook->menu)
gtk_notebook_menu_item_create (notebook, page);
gtk_stack_add_named (GTK_STACK (notebook->stack_widget), page->child, NULL);
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 (!notebook->first_tab)
notebook->first_tab = notebook->children;
if (page->tab_label)
{
if (notebook->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, notebook->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 (notebook->children, position);
while (list)
{
g_object_notify (G_OBJECT (list->data), "position");
list = list->next;
}
update_arrow_state (notebook);
if (notebook->pages)
g_list_model_items_changed (notebook->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)
{
gboolean retval = FALSE;
if (notebook->timer)
{
gtk_notebook_do_arrow (notebook, notebook->click_child);
if (notebook->need_timer)
{
notebook->need_timer = FALSE;
notebook->timer = g_timeout_add (TIMEOUT_REPEAT * SCROLL_DELAY_FACTOR,
(GSourceFunc) gtk_notebook_timer,
notebook);
g_source_set_name_by_id (notebook->timer, "[gtk] gtk_notebook_timer");
}
else
retval = TRUE;
}
return retval;
}
static void
gtk_notebook_set_scroll_timer (GtkNotebook *notebook)
{
if (!notebook->timer)
{
notebook->timer = g_timeout_add (TIMEOUT_INITIAL,
(GSourceFunc) gtk_notebook_timer,
notebook);
g_source_set_name_by_id (notebook->timer, "[gtk] gtk_notebook_timer");
notebook->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->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_box_remove (GTK_BOX (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)
{
GtkNotebookPage *page;
GList * next_list;
gint need_resize = FALSE;
GtkWidget *tab_label;
gboolean destroying;
int position;
page = list->data;
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);
notebook->children = g_list_remove_link (notebook->children, list);
if (notebook->cur_page == list->data)
{
notebook->cur_page = NULL;
if (next_list && !destroying)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE_FROM_LIST (next_list));
if (notebook->operation == DRAG_OPERATION_REORDER && !notebook->remove_in_detach)
gtk_notebook_stop_reorder (notebook);
}
if (notebook->detached_tab == list->data)
notebook->detached_tab = NULL;
if (notebook->switch_page == page)
notebook->switch_page = NULL;
if (list == notebook->first_tab)
notebook->first_tab = next_list;
if (list == notebook->focus_tab && !destroying)
gtk_notebook_switch_focus_tab (notebook, next_list);
position = g_list_index (notebook->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_stack_remove (GTK_STACK (notebook->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_unparent (tab_label);
g_object_unref (tab_label);
}
if (notebook->menu)
{
GtkWidget *parent = gtk_widget_get_parent (page->menu_label);
if (parent)
gtk_notebook_menu_label_unparent (parent);
gtk_popover_set_child (GTK_POPOVER (notebook->menu), NULL);
gtk_widget_queue_resize (notebook->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 (notebook->pages)
g_list_model_items_changed (notebook->pages, position, 1, 0);
}
static void
gtk_notebook_update_labels (GtkNotebook *notebook)
{
GtkNotebookPage *page;
GList *list;
char string[32];
gint page_num = 1;
if (!notebook->show_tabs && !notebook->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 (notebook->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 (notebook->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)
{
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 = notebook->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));
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 (!notebook->first_tab)
notebook->first_tab = notebook->children;
if (!NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, notebook->cur_page) ||
!gtk_widget_get_mapped (notebook->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 = notebook->children; children; children = children->next)
{
page = children->data;
if (!gtk_widget_get_visible (page->child) ||
page == notebook->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 == notebook->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 && notebook->scrollable)
{
for (i = 0; i < 4; i++)
{
if (notebook->arrow_widget[i] == NULL)
continue;
gtk_widget_snapshot_child (GTK_WIDGET (gizmo), notebook->arrow_widget[i], snapshot);
}
}
if (notebook->operation != DRAG_OPERATION_DETACH)
gtk_widget_snapshot_child (GTK_WIDGET (gizmo), notebook->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)
{
GtkAllocation arrow_allocation;
gint size1, size2, min, nat;
guint i, ii;
switch (notebook->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 (notebook->arrow_widget[ii] == NULL)
continue;
gtk_widget_measure (notebook->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 (notebook->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 (notebook->arrow_widget[ii],
&arrow_allocation,
-1);
allocation->width -= min;
}
}
break;
case GTK_POS_LEFT:
case GTK_POS_RIGHT:
if (notebook->arrow_widget[0] || notebook->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 (notebook->arrow_widget[0])
gtk_widget_size_allocate (notebook->arrow_widget[0], &arrow_allocation, -1);
arrow_allocation.x += size1;
arrow_allocation.width = size2;
if (notebook->arrow_widget[1])
gtk_widget_size_allocate (notebook->arrow_widget[1], &arrow_allocation, -1);
allocation->y += min;
allocation->height -= min;
}
if (notebook->arrow_widget[2] || notebook->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 (notebook->arrow_widget[2])
gtk_widget_size_allocate (notebook->arrow_widget[2], &arrow_allocation, -1);
arrow_allocation.x += size1;
arrow_allocation.width = size2;
if (notebook->arrow_widget[3])
gtk_widget_size_allocate (notebook->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)
{
GList *children;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
children = notebook->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 (!notebook->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)
{
GList *children;
GtkNotebookPage *page;
if (show_arrows) /* first_tab <- focus_tab */
{
*remaining_space = tab_space;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, notebook->cur_page) &&
gtk_widget_get_visible (notebook->cur_page->child))
{
gtk_notebook_calc_tabs (notebook,
notebook->focus_tab,
&(notebook->focus_tab),
remaining_space, STEP_NEXT);
}
if (tab_space <= 0 || *remaining_space <= 0)
{
/* show 1 tab */
notebook->first_tab = notebook->focus_tab;
*last_child = gtk_notebook_search_page (notebook, notebook->focus_tab,
STEP_NEXT, TRUE);
*n = 1;
}
else
{
children = NULL;
if (notebook->first_tab && notebook->first_tab != notebook->focus_tab)
{
/* Is first_tab really predecessor of focus_tab? */
page = notebook->first_tab->data;
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, page) &&
gtk_widget_get_visible (page->child))
for (children = notebook->focus_tab;
children && children != notebook->first_tab;
children = gtk_notebook_search_page (notebook,
children,
STEP_PREV,
TRUE));
}
if (!children)
{
if (NOTEBOOK_IS_TAB_LABEL_PARENT (notebook, notebook->cur_page))
notebook->first_tab = notebook->focus_tab;
else
notebook->first_tab = gtk_notebook_search_page (notebook, notebook->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,
notebook->focus_tab,
STEP_PREV,
TRUE),
&(notebook->first_tab),
remaining_space,
STEP_PREV);
if (*remaining_space < 0)
{
notebook->first_tab =
gtk_notebook_search_page (notebook, notebook->first_tab,
STEP_NEXT, TRUE);
if (!notebook->first_tab)
notebook->first_tab = notebook->focus_tab;
*last_child = gtk_notebook_search_page (notebook, notebook->focus_tab,
STEP_NEXT, TRUE);
}
else /* focus_tab -> end */
{
if (!notebook->first_tab)
notebook->first_tab = gtk_notebook_search_page (notebook,
NULL,
STEP_NEXT,
TRUE);
children = NULL;
gtk_notebook_calc_tabs (notebook,
gtk_notebook_search_page (notebook,
notebook->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,
notebook->first_tab,
STEP_PREV,
TRUE),
&children,
remaining_space,
STEP_PREV);
if (*remaining_space == 0)
notebook->first_tab = children;
else
notebook->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 = notebook->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 != notebook->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 (notebook->tab_pos == GTK_POS_TOP || notebook->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 = notebook->children;
notebook->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)
{
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 (notebook->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 (notebook->cur_page->tab_widget, notebook->cur_page->tab_widget, &drag_bounds))
graphene_rect_init_from_rect (&drag_bounds, graphene_rect_zero ());
left_x = CLAMP (notebook->mouse_x - notebook->drag_offset_x,
allocation->x, allocation->x + allocation->width - drag_bounds.size.width);
top_y = CLAMP (notebook->mouse_y - notebook->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 (notebook->tab_pos == GTK_POS_TOP || notebook->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 (notebook->operation == DRAG_OPERATION_REORDER &&
!gap_left && packing_changed)
{
if (!allocate_at_bottom)
{
if (left_x >= anchor)
{
left_x = notebook->drag_surface_x = anchor;
anchor += drag_bounds.size.width;
}
}
else
{
if (right_x <= anchor)
{
anchor -= drag_bounds.size.width;
left_x = notebook->drag_surface_x = anchor;
}
}
gap_left = TRUE;
}
if (notebook->operation == DRAG_OPERATION_REORDER && page == notebook->cur_page)
{
notebook->drag_surface_x = left_x;
notebook->drag_surface_y = child_allocation.y;
}
else
{
if (allocate_at_bottom)
anchor -= child_allocation.width;
if (notebook->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 (notebook->operation == DRAG_OPERATION_REORDER &&
!gap_left && packing_changed)
{
if (!allocate_at_bottom && top_y >= anchor)
{
top_y = notebook->drag_surface_y = anchor;
anchor += drag_bounds.size.height;
}
gap_left = TRUE;
}
if (notebook->operation == DRAG_OPERATION_REORDER && page == notebook->cur_page)
{
notebook->drag_surface_x = child_allocation.x;
notebook->drag_surface_y = top_y;
}
else
{
if (allocate_at_bottom)
anchor -= child_allocation.height;
if (notebook->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 == notebook->cur_page && notebook->operation == DRAG_OPERATION_REORDER)
{
GtkAllocation fixed_allocation = { notebook->drag_surface_x, notebook->drag_surface_y,
child_allocation.width, child_allocation.height };
gtk_widget_size_allocate (page->tab_widget, &fixed_allocation, -1);
}
else if (page == notebook->detached_tab && notebook->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 (notebook->operation != DRAG_OPERATION_REORDER || page != notebook->cur_page)
{
if (notebook->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 (notebook->operation != DRAG_OPERATION_REORDER || page != notebook->cur_page)
{
if (notebook->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 (notebook->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 && notebook->drag_surface_x > anchor) ||
(allocate_at_bottom && notebook->drag_surface_x < anchor))
notebook->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 && notebook->drag_surface_y > anchor) ||
(allocate_at_bottom && notebook->drag_surface_y < anchor))
notebook->drag_surface_y = anchor;
break;
default:
g_assert_not_reached ();
break;
}
}
}
static void
gtk_notebook_pages_allocate (GtkNotebook *notebook,
int width,
int height)
{
GList *children = NULL;
GList *last_child = NULL;
gboolean showarrow = FALSE;
GtkAllocation tabs_allocation;
gint tab_space, remaining_space;
gint expanded_tabs;
if (!notebook->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 = notebook->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 = notebook->children;
gtk_notebook_calculate_tabs_allocation (notebook, &children, last_child,
showarrow, STEP_PREV,
&remaining_space, &expanded_tabs, &tabs_allocation);
}
if (!notebook->first_tab)
notebook->first_tab = notebook->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)
{
GList *list = gtk_notebook_find_child (notebook, GTK_WIDGET (child));
GtkNotebookPage *page = GTK_NOTEBOOK_PAGE_FROM_LIST (list);
AtkObject *accessible;
gboolean child_has_focus;
if (notebook->cur_page == page || !gtk_widget_get_visible (GTK_WIDGET (child)))
return;
/* save the value here, changing visibility changes focus */
child_has_focus = notebook->child_has_focus;
if (notebook->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, notebook->cur_page->child);
gtk_widget_unset_state_flags (notebook->cur_page->tab_widget, GTK_STATE_FLAG_CHECKED);
}
notebook->cur_page = page;
gtk_widget_set_state_flags (page->tab_widget, GTK_STATE_FLAG_CHECKED, FALSE);
gtk_widget_set_visible (notebook->header_widget, notebook->show_tabs);
if (!notebook->focus_tab ||
notebook->focus_tab->data != (gpointer) notebook->cur_page)
notebook->focus_tab =
g_list_find (notebook->children, notebook->cur_page);
gtk_stack_set_visible_child (GTK_STACK (notebook->stack_widget), notebook->cur_page->child);
gtk_widget_set_child_visible (notebook->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 (notebook->cur_page->last_focus_child &&
gtk_widget_is_ancestor (notebook->cur_page->last_focus_child, notebook->cur_page->child))
gtk_widget_grab_focus (notebook->cur_page->last_focus_child);
else
if (!gtk_widget_child_focus (notebook->cur_page->child, GTK_DIR_TAB_FORWARD))
gtk_widget_grab_focus (GTK_WIDGET (notebook));
}
update_arrow_state (notebook);
accessible = _gtk_widget_peek_accessible (GTK_WIDGET (notebook));
if (accessible != NULL)
gtk_notebook_accessible_update_page (GTK_NOTEBOOK_ACCESSIBLE (accessible),
gtk_notebook_get_current_page (notebook));
gtk_widget_queue_resize (GTK_WIDGET (notebook));
gtk_widget_queue_resize (notebook->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)
{
guint page_num;
if (notebook->cur_page == page)
return;
page_num = g_list_index (notebook->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)
{
GtkNotebookPage *page;
GtkDirectionType dir;
GtkPositionType tab_pos = get_effective_tab_pos (notebook);
if (!notebook->focus_tab)
return FALSE;
page = notebook->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)
{
GtkNotebookPage *page;
if (notebook->focus_tab == new_child)
return;
notebook->focus_tab = new_child;
if (!notebook->show_tabs || !notebook->focus_tab)
return;
page = notebook->focus_tab->data;
gtk_notebook_switch_page (notebook, page);
}
static void
gtk_notebook_menu_switch_page (GtkWidget *widget,
GtkNotebookPage *page)
{
GtkNotebook *notebook;
GList *children;
guint page_num;
notebook = GTK_NOTEBOOK (gtk_widget_get_ancestor (widget, GTK_TYPE_NOTEBOOK));
gtk_popover_popdown (GTK_POPOVER (notebook->menu));
if (notebook->cur_page == page)
return;
page_num = 0;
children = notebook->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)
{
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_has_frame (GTK_BUTTON (menu_item), FALSE);
gtk_button_set_child (GTK_BUTTON (menu_item), page->menu_label);
gtk_box_append (GTK_BOX (notebook->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)
{
GtkNotebookPage *page = list->data;
GtkWidget *menu_item = gtk_widget_get_parent (page->menu_label);
gtk_box_remove (GTK_BOX (menu_item), page->menu_label);
gtk_widget_unparent (menu_item);
gtk_notebook_menu_item_create (notebook, page);
}
static void
gtk_notebook_menu_label_unparent (GtkWidget *widget)
{
gtk_button_set_child (GTK_BUTTON (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);
GList *list;
list = g_list_find_custom (notebook->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)
{
GList *list = NULL;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (page_num >= 0)
list = g_list_nth (notebook->children, page_num);
else
list = g_list_last (notebook->children);
if (list)
gtk_notebook_remove (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)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
if (!notebook->cur_page)
return -1;
return g_list_index (notebook->children, notebook->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)
{
GtkNotebookPage *page;
GList *list;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
if (page_num >= 0)
list = g_list_nth (notebook->children, page_num);
else
list = g_list_last (notebook->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)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), 0);
return g_list_length (notebook->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)
{
GList *children;
gint num;
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), -1);
num = 0;
children = notebook->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)
{
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (page_num < 0)
page_num = g_list_length (notebook->children) - 1;
list = g_list_nth (notebook->children, page_num);
if (list)
gtk_notebook_switch_page (notebook, GTK_NOTEBOOK_PAGE_FROM_LIST (list));
}
/**
* 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)
{
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
list = g_list_find (notebook->children, notebook->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)
{
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
list = g_list_find (notebook->children, notebook->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)
{
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (notebook->show_border != show_border)
{
notebook->show_border = show_border;
if (show_border)
gtk_widget_add_css_class (GTK_WIDGET (notebook), GTK_STYLE_CLASS_FRAME);
else
gtk_widget_remove_css_class (GTK_WIDGET (notebook), 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->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)
{
GtkNotebookPage *page;
GList *children;
gint i;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
show_tabs = show_tabs != FALSE;
if (notebook->show_tabs == show_tabs)
return;
notebook->show_tabs = show_tabs;
children = notebook->children;
if (!show_tabs)
{
while (children)
{
page = children->data;
children = children->next;
if (page->default_tab)
{
gtk_widget_unparent (page->tab_label);
page->tab_label = NULL;
}
else
gtk_widget_hide (page->tab_label);
}
gtk_widget_hide (notebook->header_widget);
}
else
{
gtk_notebook_update_labels (notebook);
gtk_widget_show (notebook->header_widget);
}
for (i = 0; i < N_ACTION_WIDGETS; i++)
{
if (notebook->action_widget[i])
gtk_widget_set_child_visible (notebook->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->show_tabs;
}
static void
gtk_notebook_update_tab_pos (GtkNotebook *notebook)
{
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_widget_add_css_class (notebook->header_widget, tab_pos_names[i]);
else
gtk_widget_remove_css_class (notebook->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 (notebook->tabs_widget, TRUE);
gtk_widget_set_vexpand (notebook->tabs_widget, FALSE);
gtk_widget_set_hexpand (notebook->header_widget, TRUE);
gtk_widget_set_vexpand (notebook->header_widget, FALSE);
if (notebook->show_tabs)
{
gtk_widget_insert_before (notebook->header_widget, GTK_WIDGET (notebook), notebook->stack_widget);
gtk_css_node_insert_before (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (notebook->header_widget),
gtk_widget_get_css_node (notebook->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_VERTICAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (notebook->header_widget), GTK_ORIENTATION_HORIZONTAL);
break;
case GTK_POS_BOTTOM:
gtk_widget_set_hexpand (notebook->tabs_widget, TRUE);
gtk_widget_set_vexpand (notebook->tabs_widget, FALSE);
gtk_widget_set_hexpand (notebook->header_widget, TRUE);
gtk_widget_set_vexpand (notebook->header_widget, FALSE);
if (notebook->show_tabs)
{
gtk_widget_insert_after (notebook->header_widget, GTK_WIDGET (notebook), notebook->stack_widget);
gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (notebook->header_widget),
gtk_widget_get_css_node (notebook->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_VERTICAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (notebook->header_widget), GTK_ORIENTATION_HORIZONTAL);
break;
case GTK_POS_LEFT:
gtk_widget_set_hexpand (notebook->tabs_widget, FALSE);
gtk_widget_set_vexpand (notebook->tabs_widget, TRUE);
gtk_widget_set_hexpand (notebook->header_widget, FALSE);
gtk_widget_set_vexpand (notebook->header_widget, TRUE);
if (notebook->show_tabs)
{
gtk_widget_insert_before (notebook->header_widget, GTK_WIDGET (notebook), notebook->stack_widget);
gtk_css_node_insert_before (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (notebook->header_widget),
gtk_widget_get_css_node (notebook->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_HORIZONTAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (notebook->header_widget), GTK_ORIENTATION_VERTICAL);
break;
case GTK_POS_RIGHT:
gtk_widget_set_hexpand (notebook->tabs_widget, FALSE);
gtk_widget_set_vexpand (notebook->tabs_widget, TRUE);
gtk_widget_set_hexpand (notebook->header_widget, FALSE);
gtk_widget_set_vexpand (notebook->header_widget, TRUE);
if (notebook->show_tabs)
{
gtk_widget_insert_after (notebook->header_widget, GTK_WIDGET (notebook), notebook->stack_widget);
gtk_css_node_insert_after (gtk_widget_get_css_node (GTK_WIDGET (notebook)),
gtk_widget_get_css_node (notebook->header_widget),
gtk_widget_get_css_node (notebook->stack_widget));
}
gtk_orientable_set_orientation (GTK_ORIENTABLE (layout), GTK_ORIENTATION_HORIZONTAL);
gtk_orientable_set_orientation (GTK_ORIENTABLE (notebook->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)
{
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (notebook->tab_pos != pos)
{
notebook->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->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)
{
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
scrollable = (scrollable != FALSE);
if (notebook->scrollable == scrollable)
return;
notebook->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->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)
{
GList *list;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (notebook->menu)
return;
notebook->menu = gtk_popover_menu_new ();
gtk_widget_set_parent (notebook->menu, notebook->tabs_widget);
notebook->menu_box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
g_object_ref_sink (notebook->menu_box);
gtk_popover_menu_add_submenu (GTK_POPOVER_MENU (notebook->menu), notebook->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)
{
GtkWidget *child;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
if (!notebook->menu)
return;
for (child = gtk_widget_get_first_child (notebook->menu_box);
child != NULL;
child = gtk_widget_get_next_sibling (child))
gtk_notebook_menu_label_unparent (child);
notebook->menu = NULL;
notebook->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);
if (list == NULL)
return 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)
{
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);
/* 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 (notebook->show_tabs)
{
gchar string[32];
g_snprintf (string, sizeof(string), _("Page %u"),
g_list_position (notebook->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 (notebook->show_tabs && gtk_widget_get_visible (child))
{
gtk_widget_show (page->tab_label);
gtk_widget_queue_resize (GTK_WIDGET (notebook));
}
if (notebook->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)
{
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 = list->data;
if (page->menu_label)
{
if (notebook->menu)
gtk_widget_unparent (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 (notebook->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)
{
GList *list;
GtkCssNode *sibling;
list = g_list_find (notebook->children, page);
if (notebook->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 (notebook->arrow_widget[ARROW_RIGHT_BEFORE])
sibling = gtk_widget_get_css_node (notebook->arrow_widget[ARROW_RIGHT_BEFORE]);
else if (notebook->arrow_widget[ARROW_LEFT_BEFORE])
sibling = gtk_widget_get_css_node (notebook->arrow_widget[ARROW_LEFT_BEFORE]);
else
sibling = NULL;
gtk_css_node_insert_after (gtk_widget_get_css_node (notebook->tabs_widget),
gtk_widget_get_css_node (page->tab_widget),
sibling);
gtk_notebook_update_labels (notebook);
gtk_widget_queue_allocate (notebook->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)
{
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));
list = gtk_notebook_find_child (notebook, child);
g_return_if_fail (list != NULL);
max_pos = g_list_length (notebook->children) - 1;
if (position < 0 || position > max_pos)
position = max_pos;
old_pos = g_list_position (notebook->children, list);
if (old_pos == position)
return;
page = list->data;
notebook->children = g_list_delete_link (notebook->children, list);
notebook->children = g_list_insert (notebook->children, page, position);
new_list = g_list_nth (notebook->children, position);
/* Fix up GList references in GtkNotebook structure */
if (notebook->first_tab == list)
notebook->first_tab = new_list;
if (notebook->focus_tab == list)
notebook->focus_tab = new_list;
/* Move around the menu items if necessary */
gtk_notebook_child_reordered (notebook, page);
for (list = notebook->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)
{
GQuark group;
g_return_if_fail (GTK_IS_NOTEBOOK (notebook));
group = g_quark_from_string (group_name);
if (notebook->group != group)
{
notebook->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->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_widget_add_css_class (page->tab_widget, "reorderable-page");
else
gtk_widget_remove_css_class (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;
* GtkWidget *notebook;
* GtkWidget **child;
*
* drag = gtk_drop_get_drag (drop);
* notebook = g_object_get_data (drag, "gtk-notebook-drag-origin");
* 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->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)
{
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);
if (notebook->action_widget[pack_type])
gtk_box_remove (GTK_BOX (notebook->header_widget), notebook->action_widget[pack_type]);
notebook->action_widget[pack_type] = widget;
if (widget)
{
gtk_box_append (GTK_BOX (notebook->header_widget), widget);
if (pack_type == GTK_PACK_START)
gtk_box_reorder_child_after (GTK_BOX (notebook->header_widget), widget, NULL);
else
gtk_box_reorder_child_after (GTK_BOX (notebook->header_widget), widget, gtk_widget_get_last_child (notebook->header_widget));
gtk_widget_set_child_visible (widget, notebook->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->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->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) (attributes element-type=GtkNotebookPage): a
* #GListModel for the notebook's children
*/
GListModel *
gtk_notebook_get_pages (GtkNotebook *notebook)
{
g_return_val_if_fail (GTK_IS_NOTEBOOK (notebook), NULL);
if (notebook->pages)
return g_object_ref (notebook->pages);
notebook->pages = G_LIST_MODEL (gtk_notebook_pages_new (notebook));
g_object_add_weak_pointer (G_OBJECT (notebook->pages), (gpointer *)&notebook->pages);
return notebook->pages;
}
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