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gtk2/gtk/gtknotebook.c
Sophie Herold a546ae32d7 Remove all nicks and blurbs from param specs 
Those property features don't seem to be in use anywhere.
They are redundant since the docs cover the same information
and more. They also created unnecessary translation work.

Closes #4904
2022-05-11 18:16:29 +02:00

7256 lines
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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 "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 "gtkdragsourceprivate.h"
#include "gtkwidgetpaintable.h"
#include "gtknative.h"
#include <stdio.h>
#include <string.h>
#include <math.h>
/**
* GtkNotebook:
*
* `GtkNotebook` is a container whose children are pages switched
* between using tabs.
*
* ![An example GtkNotebook](notebook.png)
*
* There are many configuration options for `GtkNotebook`. Among
* other things, you can choose on which edge the tabs appear
* (see [method@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 [method@Gtk.Notebook.set_scrollable]), and whether
* there will be a popup menu allowing the users to switch pages.
* (see [method@Gtk.Notebook.popup_enable]).
*
* # 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`:
*
* ```xml
* <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
*
* ```
* 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 [method@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.
*
* # Accessibility
*
* `GtkNotebook` uses the following roles:
*
* - %GTK_ACCESSIBLE_ROLE_GROUP for the notebook widget
* - %GTK_ACCESSIBLE_ROLE_TAB_LIST for the list of tabs
* - %GTK_ACCESSIBLE_ROLE_TAB role for each tab
* - %GTK_ACCESSIBLE_ROLE_TAB_PANEL for each page
*/
/**
* GtkNotebookPage:
*
* `GtkNotebookPage` is an auxiliary object used by `GtkNotebook`.
*/
#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,
int offset);
void (* move_focus_out) (GtkNotebook *notebook,
GtkDirectionType direction);
gboolean (* reorder_tab) (GtkNotebook *notebook,
GtkDirectionType direction,
gboolean move_to_last);
/* More vfuncs */
int (* insert_page) (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
int 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;
double drag_begin_x;
double drag_begin_y;
int drag_offset_x;
int drag_offset_y;
int drag_surface_x;
int drag_surface_y;
double mouse_x;
double mouse_y;
int 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;
/**
* GtkNotebookPage:child: (attributes org.gtk.Property.get=gtk_notebook_page_get_child)
*
* The child for this page.
*/
g_object_class_install_property (object_class,
CHILD_PROP_CHILD,
g_param_spec_object ("child", NULL, NULL,
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
/**
* GtkNotebookPage:tab:
*
* The tab widget for tihs page.
*/
g_object_class_install_property (object_class,
CHILD_PROP_TAB,
g_param_spec_object ("tab", NULL, NULL,
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
/**
* GtkNotebookPage:menu:
*
* The label widget displayed in the childs menu entry.
*/
g_object_class_install_property (object_class,
CHILD_PROP_MENU,
g_param_spec_object ("menu", NULL, NULL,
GTK_TYPE_WIDGET,
GTK_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
/**
* GtkNotebookPage:tab-label:
*
* The text of the tab widget.
*/
g_object_class_install_property (object_class,
CHILD_PROP_TAB_LABEL,
g_param_spec_string ("tab-label", NULL, NULL,
NULL,
GTK_PARAM_READWRITE));
/**
* GtkNotebookPage:menu-label:
*
* The text of the menu widget.
*/
g_object_class_install_property (object_class,
CHILD_PROP_MENU_LABEL,
g_param_spec_string ("menu-label", NULL, NULL,
NULL,
GTK_PARAM_READWRITE));
/**
* GtkNotebookPage:position:
*
* The index of the child in the parent.
*/
g_object_class_install_property (object_class,
CHILD_PROP_POSITION,
g_param_spec_int ("position", NULL, NULL,
-1, G_MAXINT, 0,
GTK_PARAM_READWRITE));
/**
* GtkNotebookPage:tab-expand:
*
* Whether to expand the childs tab.
*/
g_object_class_install_property (object_class,
CHILD_PROP_TAB_EXPAND,
g_param_spec_boolean ("tab-expand", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkNotebookPage:tab-fill:
*
* Whether the childs tab should fill the allocated area.
*/
g_object_class_install_property (object_class,
CHILD_PROP_TAB_FILL,
g_param_spec_boolean ("tab-fill", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkNotebookPage:reorderable:
*
* Whether the tab is reorderable by user action.
*/
g_object_class_install_property (object_class,
CHILD_PROP_REORDERABLE,
g_param_spec_boolean ("reorderable", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkNotebookPage:detachable:
*
* Whether the tab is detachable.
*/
g_object_class_install_property (object_class,
CHILD_PROP_DETACHABLE,
g_param_spec_boolean ("detachable", NULL, NULL,
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,
int 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_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 int gtk_notebook_real_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
int position);
static GtkNotebook *gtk_notebook_create_window (GtkNotebook *notebook,
GtkWidget *page);
static void gtk_notebook_measure_tabs (GtkGizmo *gizmo,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *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 int gtk_notebook_timer (GtkNotebook *notebook);
static void gtk_notebook_set_scroll_timer (GtkNotebook *notebook);
static int 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,
int direction,
gboolean find_visible);
static void gtk_notebook_child_reordered (GtkNotebook *notebook,
GtkNotebookPage *page);
static int 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,
int *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 int 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 char *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 void gtk_notebook_gesture_cancel (GtkGestureClick *gesture,
GdkEventSequence *sequence,
GtkNotebook *notebook);
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->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;
/**
* GtkNotebook:page: (attributes org.gtk.Property.get=gtk_notebook_get_current_page org.gtk.Property.set=gtk_notebook_set_current_page)
*
* The index of the current page.
*/
properties[PROP_PAGE] =
g_param_spec_int ("page", NULL, NULL,
-1, G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:tab-pos: (attributes org.gtk.Property.get=gtk_notebook_get_tab_pos org.gtk.Property.set=gtk_notebook_set_tab_pos)
*
* Which side of the notebook holds the tabs.
*/
properties[PROP_TAB_POS] =
g_param_spec_enum ("tab-pos", NULL, NULL,
GTK_TYPE_POSITION_TYPE,
GTK_POS_TOP,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:show-tabs: (attributes org.gtk.Property.get=gtk_notebook_get_show_tabs org.gtk.Property.set=gtk_notebook_set_show_tabs)
*
* Whether tabs should be shown.
*/
properties[PROP_SHOW_TABS] =
g_param_spec_boolean ("show-tabs", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:show-border: (attributes org.gtk.Property.get=gtk_notebook_get_show_border org.gtk.Property.set=gtk_notebook_set_show_border)
*
* Whether the border should be shown.
*/
properties[PROP_SHOW_BORDER] =
g_param_spec_boolean ("show-border", NULL, NULL,
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:scrollable: (attributes org.gtk.Property.get=gtk_notebook_get_scrollable org.gtk.Property.set=gtk_notebook_set_scrollable)
*
* If %TRUE, scroll arrows are added if there are too many pages to fit.
*/
properties[PROP_SCROLLABLE] =
g_param_spec_boolean ("scrollable", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:enable-popup:
*
* If %TRUE, pressing the right mouse button on the notebook shows a page switching menu.
*/
properties[PROP_ENABLE_POPUP] =
g_param_spec_boolean ("enable-popup", NULL, NULL,
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:group-name: (attributes org.gtk.Property.get=gtk_notebook_get_group_name org.gtk.Property.set=gtk_notebook_set_group_name)
*
* Group name for tab drag and drop.
*/
properties[PROP_GROUP_NAME] =
g_param_spec_string ("group-name", NULL, NULL,
NULL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY);
/**
* GtkNotebook:pages: (attributes org.gtk.Property.get=gtk_notebook_get_pages)
*
* A selection model with the pages.
*/
properties[PROP_PAGES] =
g_param_spec_object ("pages", NULL, NULL,
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: (nullable) (transfer none): a `GtkNotebook` that
* @page should be added to
*/
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_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
gtk_widget_class_set_css_name (widget_class, I_("notebook"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_GROUP);
}
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, "top");
gtk_widget_hide (notebook->header_widget);
gtk_widget_set_parent (notebook->header_widget, GTK_WIDGET (notebook));
notebook->tabs_widget = gtk_gizmo_new_with_role ("tabs",
GTK_ACCESSIBLE_ROLE_TAB_LIST,
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);
gtk_accessible_update_property (GTK_ACCESSIBLE (notebook->tabs_widget),
GTK_ACCESSIBLE_PROPERTY_LABEL, _("Tab list"),
-1);
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);
g_signal_connect (gesture, "cancel", G_CALLBACK (gtk_notebook_gesture_cancel), 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), "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 char *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,
int 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 int
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;
int 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_take_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,
int size,
int *out_left,
int *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,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
int child1_min, child1_nat;
int 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
{
int 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)
{
int tab_width = 0;
int tab_height = 0;
int 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)
{
int 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)
{
int 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)
{
int 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)
{
int 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,
int size,
int *minimum,
int *natural,
int *minimum_baseline,
int *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,
int x,
int y)
{
int 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,
int 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,
double x,
double 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,
double x,
double 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;
int 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, "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, "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)
{
int 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 void
gtk_notebook_gesture_cancel (GtkGestureClick *gesture,
GdkEventSequence *sequence,
GtkNotebook *notebook)
{
gtk_notebook_stop_reorder (notebook);
stop_scrolling (notebook);
}
static GtkNotebookPointerPosition
get_pointer_position (GtkNotebook *notebook)
{
GtkWidget *widget = GTK_WIDGET (notebook);
graphene_rect_t area;
int 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)
{
int 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
{
int 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,
int current_x,
int current_y)
{
int 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_double (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);
gdk_source_set_static_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
update_arrow_state (GtkNotebook *notebook)
{
int 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;
int 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);
if (i == ARROW_LEFT_BEFORE || i == ARROW_LEFT_AFTER)
gtk_accessible_update_property (GTK_ACCESSIBLE (notebook->arrow_widget[i]),
GTK_ACCESSIBLE_PROPERTY_LABEL, _("Previous tab"),
-1);
else
gtk_accessible_update_property (GTK_ACCESSIBLE (notebook->arrow_widget[i]),
GTK_ACCESSIBLE_PROPERTY_LABEL, _("Next tab"),
-1);
}
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_current_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_current_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 [method@Gtk.Notebook.remove_page],
* 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;
int 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 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;
int 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,
int 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,
int 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;
int first_action;
int 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,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *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);
gdk_source_set_static_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 int
gtk_notebook_insert_notebook_page (GtkNotebook *notebook,
GtkNotebookPage *page,
int position)
{
int nchildren;
GList *list;
GtkWidget *sibling;
GtkEventController *controller;
GtkStackPage *stack_page;
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_with_role ("tab",
GTK_ACCESSIBLE_ROLE_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);
gtk_accessible_update_property (GTK_ACCESSIBLE (page->tab_widget),
GTK_ACCESSIBLE_PROPERTY_LABEL, _("Tab"),
-1);
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);
}
stack_page = gtk_stack_get_page (GTK_STACK (notebook->stack_widget), page->child);
gtk_accessible_update_relation (GTK_ACCESSIBLE (page->tab_widget),
GTK_ACCESSIBLE_RELATION_CONTROLS, stack_page, NULL,
-1);
gtk_accessible_update_relation (GTK_ACCESSIBLE (stack_page),
GTK_ACCESSIBLE_RELATION_LABELLED_BY, page->tab_widget, NULL,
-1);
gtk_accessible_update_state (GTK_ACCESSIBLE (page->tab_widget),
GTK_ACCESSIBLE_STATE_SELECTED, FALSE,
-1);
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 int
gtk_notebook_real_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
int 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);
gdk_source_set_static_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);
gdk_source_set_static_name_by_id (notebook->timer, "[gtk] gtk_notebook_timer");
notebook->need_timer = TRUE;
}
}
static int
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;
int 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];
int 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,
int 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;
int 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;
int 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,
int *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,
int tab_space,
GList **last_child,
int *n,
int *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;
int 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,
int 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,
int direction,
int *remaining_space,
int *expanded_tabs,
const GtkAllocation *allocation)
{
GtkWidget *widget;
GtkNotebookPage *page;
gboolean allocate_at_bottom;
int tab_extra_space;
GtkPositionType tab_pos;
int 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;
int tab_space, remaining_space;
int 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,
int *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);
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);
gtk_accessible_update_state (GTK_ACCESSIBLE (notebook->cur_page->tab_widget),
GTK_ACCESSIBLE_STATE_SELECTED, FALSE,
-1);
}
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 (gtk_widget_get_realized (GTK_WIDGET (notebook)))
gtk_widget_realize_at_context (notebook->cur_page->tab_widget);
gtk_accessible_update_state (GTK_ACCESSIBLE (notebook->cur_page->tab_widget),
GTK_ACCESSIBLE_STATE_SELECTED, TRUE,
-1);
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);
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 int
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_button_set_child (GTK_BUTTON (menu_item), NULL);
gtk_box_remove (GTK_BOX (notebook->menu_box), 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: (nullable): 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
*/
int
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: (nullable): the `GtkWidget` to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (nullable): 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
*/
int
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: (nullable): 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
*/
int
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: (nullable): the `GtkWidget` to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (nullable): 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
*/
int
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: (nullable): 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
*/
int
gtk_notebook_insert_page (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
int 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 int
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: (nullable): the `GtkWidget` to be used as the label
* for the page, or %NULL to use the default label, “page N”
* @menu_label: (nullable): 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
*/
int
gtk_notebook_insert_page_menu (GtkNotebook *notebook,
GtkWidget *child,
GtkWidget *tab_label,
GtkWidget *menu_label,
int 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,
int 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: (attributes org.gtk.Method.get_property=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.
*/
int
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,
int 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
*/
int
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
*/
int
gtk_notebook_page_num (GtkNotebook *notebook,
GtkWidget *child)
{
GList *children;
int 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: (attributes org.gtk.Method.set_property=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,
int 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: (attributes org.gtk.Method.set_property=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.
*/
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), "frame");
else
gtk_widget_remove_css_class (GTK_WIDGET (notebook), "frame");
g_object_notify_by_pspec (G_OBJECT (notebook), properties[PROP_SHOW_BORDER]);
}
}
/**
* gtk_notebook_get_show_border: (attributes org.gtk.Method.get_property=show-border)
* @notebook: a `GtkNotebook`
*
* Returns whether a bevel will be drawn around the notebook pages.
*
* 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: (attributes org.gtk.Method.set_property=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;
int 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: (attributes org.gtk.Method.get_property=show-tabs)
* @notebook: a `GtkNotebook`
*
* Returns whether the tabs of the notebook are shown.
*
* 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[] = {
"left", "right", "top", "bottom",
};
int 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_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_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_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_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: (attributes org.gtk.Method.set_property=tab-pos)
* @notebook: a `GtkNotebook`.
* @pos: the edge to draw the tabs at
*
* Sets the edge at which the tabs 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: (attributes org.gtk.Method.get_property=tab-pos)
* @notebook: a `GtkNotebook`
*
* Gets the edge at which the tabs 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: (attributes org.gtk.Method.set_property=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: (attributes or.gtk.Method.get_property=scrollable)
* @notebook: a `GtkNotebook`
*
* Returns whether the tab label area has arrows for scrolling.
*
* 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: (nullable): 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)
{
char 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 char *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 idget is not a `GtkLabel`. The string is owned
* by the widget and must not be freed.
*/
const char *
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: (nullable): 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 char *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 char *
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;
GtkWidget *sibling;
list = g_list_find (notebook->children, page);
if (notebook->menu)
gtk_notebook_menu_item_recreate (notebook, list);
if (list->prev)
sibling = GTK_NOTEBOOK_PAGE_FROM_LIST (list->prev)->tab_widget;
else if (notebook->arrow_widget[ARROW_RIGHT_BEFORE])
sibling = notebook->arrow_widget[ARROW_RIGHT_BEFORE];
else if (notebook->arrow_widget[ARROW_LEFT_BEFORE])
sibling = notebook->arrow_widget[ARROW_LEFT_BEFORE];
else
sibling = NULL;
gtk_widget_insert_after (page->tab_widget, notebook->tabs_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,
int position)
{
GList *list, *new_list;
GtkNotebookPage *page;
int old_pos;
int max_pos;
int 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: (attributes org.gtk.Method.set_property=group-name)
* @notebook: a `GtkNotebook`
* @group_name: (nullable): 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 char *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: (attributes org.gtk.Method.get_property=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 char *
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 two notebooks must share a common group identificator
* (see [method@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 [method@Gtk.Notebook.detach_tab] instead
* of [method@Gtk.Notebook.remove_page] 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.
*
* ```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 [method@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.
*/
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: (attributes org.gtk.Method.get_property=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: (attributes org.gtk.Method.get_property=pages)
* @notebook: a `GtkNotebook`
*
* Returns a `GListModel` that contains the pages of the notebook.
*
* This can be used to keep an up-to-date view. The model also
* implements [iface@Gtk.SelectionModel] and can be used to track
* and modify the visible page.
* 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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