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Learning_GTK4_tree/gtk/gtkmodelbutton.c

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2023-12-12 11:36:42 +01:00
/*
* Copyright © 2014 Red Hat, Inc.
*
* 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 licence, 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/>.
*
* Author: Matthias Clasen
*/
#include "config.h"
#include "gtkmodelbuttonprivate.h"
#include "gtkactionhelperprivate.h"
#include "gtkboxlayout.h"
#include "gtkgestureclick.h"
#include "gtkwidgetprivate.h"
#include "gtkmenutrackeritemprivate.h"
#include "gtkimage.h"
#include "gtklabel.h"
#include "gtkbox.h"
#include "gtktypebuiltins.h"
#include "gtkstack.h"
#include "gtkpopovermenuprivate.h"
#include "gtkcssnodeprivate.h"
#include "gtkcsstypesprivate.h"
#include "gtkbuiltiniconprivate.h"
#include "gtksizegroup.h"
#include "gtkactionable.h"
#include "gtkeventcontrollermotion.h"
#include "gtkeventcontrollerkey.h"
#include "gtkeventcontrollerfocus.h"
#include "gtknative.h"
#include "gtkshortcuttrigger.h"
#include "gtkshortcutcontroller.h"
#include "gtkshortcut.h"
#include "gtkaccessibleprivate.h"
#include "gtkprivate.h"
/*< private >
* GtkModelButton:
*
* GtkModelButton is a button class that can use a GAction as its model.
* In contrast to GtkToggleButton or GtkCheckButton, which can also
* be backed by a GAction via the GtkActionable:action-name property,
* GtkModelButton will adapt its appearance according to the kind of
* action it is backed by, and appear either as a plain, check or
* radio button.
*
* Model buttons are used when popovers from a menu model with
* gtk_popover_menu_new_from_model(); they can also be used manually in
* a GtkPopoverMenu.
*
* When the action is specified via the GtkActionable:action-name
* and GtkActionable:action-target properties, the role of the button
* (i.e. whether it is a plain, check or radio button) is determined by
* the type of the action and doesn't have to be explicitly specified
* with the GtkModelButton:role property.
*
* The content of the button is specified by the GtkModelButton:text
* and GtkModelButton:icon properties.
*
* The appearance of model buttons can be influenced with the
* GtkModelButton:iconic property.
*
* Model buttons have built-in support for submenus in GtkPopoverMenu.
* To make a GtkModelButton that opens a submenu when activated, set
* the GtkModelButton:menu-name property. To make a button that goes
* back to the parent menu, you should set the GtkModelButton:inverted
* property to place the submenu indicator at the opposite side.
*
* # Example
*
* |[
* <object class="GtkPopoverMenu">
* <child>
* <object class="GtkBox">
* <property name="visible">True</property>
* <property name="margin-start">10</property>
* <property name="margin-end">10</property>
* <property name="margin-top">10</property>
* <property name="margin-bottom">10</property>
* <child>
* <object class="GtkModelButton">
* <property name="visible">True</property>
* <property name="action-name">view.cut</property>
* <property name="text" translatable="yes">Cut</property>
* </object>
* </child>
* <child>
* <object class="GtkModelButton">
* <property name="visible">True</property>
* <property name="action-name">view.copy</property>
* <property name="text" translatable="yes">Copy</property>
* </object>
* </child>
* <child>
* <object class="GtkModelButton">
* <property name="visible">True</property>
* <property name="action-name">view.paste</property>
* <property name="text" translatable="yes">Paste</property>
* </object>
* </child>
* </object>
* </child>
* </object>
* ]|
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* modelbutton
* ├── <child>
* ╰── check
* ]|
*
* |[<!-- language="plain" -->
* modelbutton
* ├── <child>
* ╰── radio
* ]|
*
* |[<!-- language="plain" -->
* modelbutton
* ├── <child>
* ╰── arrow
* ]|
*
* GtkModelButton has a main CSS node with name modelbutton, and a subnode,
* which will have the name check, radio or arrow, depending on the role
* of the button and whether it has a menu name set.
*
* The subnode is positioned before or after the content nodes and gets the
* .left or .right style class, depending on where it is located.
*
* |[<!-- language="plain" -->
* button.model
* ├── <child>
* ╰── check
* ]|
*
* Iconic model buttons (see GtkModelButton:iconic) change the name of
* their main node to button and add a .model style class to it. The indicator
* subnode is invisible in this case.
*/
struct _GtkModelButton
{
GtkWidget parent_instance;
GtkWidget *box;
GtkWidget *image;
GtkWidget *label;
GtkWidget *accel_label;
GtkWidget *start_box;
GtkWidget *start_indicator;
GtkWidget *end_indicator;
GtkWidget *popover;
GtkActionHelper *action_helper;
char *menu_name;
GtkButtonRole role;
GtkSizeGroup *indicators;
char *accel;
guint open_timeout;
GtkEventController *controller;
guint active : 1;
guint iconic : 1;
guint keep_open : 1;
};
typedef struct _GtkModelButtonClass GtkModelButtonClass;
struct _GtkModelButtonClass
{
GtkWidgetClass parent_class;
void (* clicked) (GtkModelButton *button);
};
static void gtk_model_button_actionable_iface_init (GtkActionableInterface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkModelButton, gtk_model_button, GTK_TYPE_WIDGET,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ACTIONABLE, gtk_model_button_actionable_iface_init))
GType
gtk_button_role_get_type (void)
{
static gsize gtk_button_role_type;
if (g_once_init_enter (&gtk_button_role_type))
{
static const GEnumValue values[] = {
{ GTK_BUTTON_ROLE_NORMAL, "GTK_BUTTON_ROLE_NORMAL", "normal" },
{ GTK_BUTTON_ROLE_CHECK, "GTK_BUTTON_ROLE_CHECK", "check" },
{ GTK_BUTTON_ROLE_RADIO, "GTK_BUTTON_ROLE_RADIO", "radio" },
{ GTK_BUTTON_ROLE_TITLE, "GTK_BUTTON_ROLE_RADIO", "title" },
{ 0, NULL, NULL }
};
GType type;
type = g_enum_register_static (I_("GtkButtonRole"), values);
g_once_init_leave (&gtk_button_role_type, type);
}
return gtk_button_role_type;
}
enum
{
PROP_0,
PROP_ROLE,
PROP_ICON,
PROP_TEXT,
PROP_USE_MARKUP,
PROP_ACTIVE,
PROP_MENU_NAME,
PROP_POPOVER,
PROP_ICONIC,
PROP_ACCEL,
PROP_INDICATOR_SIZE_GROUP,
/* actionable properties */
PROP_ACTION_NAME,
PROP_ACTION_TARGET,
LAST_PROP = PROP_ACTION_NAME
};
enum
{
SIGNAL_CLICKED,
LAST_SIGNAL
};
static GParamSpec *properties[LAST_PROP] = { NULL, };
static guint signals[LAST_SIGNAL] = { 0 };
static void
gtk_model_button_set_action_name (GtkActionable *actionable,
const char *action_name)
{
GtkModelButton *self = GTK_MODEL_BUTTON (actionable);
if (!self->action_helper)
self->action_helper = gtk_action_helper_new (actionable);
gtk_action_helper_set_action_name (self->action_helper, action_name);
}
static void
gtk_model_button_set_action_target_value (GtkActionable *actionable,
GVariant *action_target)
{
GtkModelButton *self = GTK_MODEL_BUTTON (actionable);
if (!self->action_helper)
self->action_helper = gtk_action_helper_new (actionable);
gtk_action_helper_set_action_target_value (self->action_helper, action_target);
}
static const char *
gtk_model_button_get_action_name (GtkActionable *actionable)
{
GtkModelButton *self = GTK_MODEL_BUTTON (actionable);
return gtk_action_helper_get_action_name (self->action_helper);
}
static GVariant *
gtk_model_button_get_action_target_value (GtkActionable *actionable)
{
GtkModelButton *self = GTK_MODEL_BUTTON (actionable);
return gtk_action_helper_get_action_target_value (self->action_helper);
}
static void
gtk_model_button_actionable_iface_init (GtkActionableInterface *iface)
{
iface->get_action_name = gtk_model_button_get_action_name;
iface->set_action_name = gtk_model_button_set_action_name;
iface->get_action_target_value = gtk_model_button_get_action_target_value;
iface->set_action_target_value = gtk_model_button_set_action_target_value;
}
static void
update_at_context (GtkModelButton *button)
{
GtkAccessibleRole role;
GtkATContext *context;
gboolean was_realized;
context = gtk_accessible_get_at_context (GTK_ACCESSIBLE (button));
if (context == NULL)
return;
was_realized = gtk_at_context_is_realized (context);
gtk_at_context_unrealize (context);
switch (button->role)
{
default:
case GTK_BUTTON_ROLE_NORMAL:
case GTK_BUTTON_ROLE_TITLE:
role = GTK_ACCESSIBLE_ROLE_MENU_ITEM;
break;
case GTK_BUTTON_ROLE_CHECK:
role = GTK_ACCESSIBLE_ROLE_MENU_ITEM_CHECKBOX;
break;
case GTK_BUTTON_ROLE_RADIO:
role = GTK_ACCESSIBLE_ROLE_MENU_ITEM_RADIO;
break;
}
gtk_at_context_set_accessible_role (context, role);
if (was_realized)
gtk_at_context_realize (context);
g_object_unref (context);
}
static void
update_node_ordering (GtkModelButton *button)
{
GtkWidget *child;
if (gtk_widget_get_direction (GTK_WIDGET (button)) == GTK_TEXT_DIR_LTR)
{
if (button->start_indicator)
{
gtk_widget_add_css_class (button->start_indicator, "left");
gtk_widget_remove_css_class (button->start_indicator, "right");
}
if (button->end_indicator)
{
gtk_widget_add_css_class (button->end_indicator, "right");
gtk_widget_remove_css_class (button->end_indicator, "left");
}
child = gtk_widget_get_first_child (GTK_WIDGET (button));
if (button->start_indicator && child != button->start_box)
gtk_widget_insert_before (button->start_box, GTK_WIDGET (button), child);
child = gtk_widget_get_last_child (GTK_WIDGET (button));
if (button->end_indicator && child != button->end_indicator)
gtk_widget_insert_after (button->end_indicator, GTK_WIDGET (button), child);
}
else
{
if (button->start_indicator)
{
gtk_widget_add_css_class (button->start_indicator, "right");
gtk_widget_remove_css_class (button->start_indicator, "left");
}
if (button->end_indicator)
{
gtk_widget_add_css_class (button->end_indicator, "left");
gtk_widget_remove_css_class (button->end_indicator, "right");
}
child = gtk_widget_get_first_child (GTK_WIDGET (button));
if (button->end_indicator && child != button->end_indicator)
gtk_widget_insert_before (button->end_indicator, GTK_WIDGET (button), child);
child = gtk_widget_get_last_child (GTK_WIDGET (button));
if (button->end_indicator && child != button->end_indicator)
gtk_widget_insert_after (button->end_indicator, GTK_WIDGET (button), child);
}
}
static void
update_end_indicator (GtkModelButton *self)
{
const gboolean is_ltr = gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_LTR;
if (!self->end_indicator)
return;
if (is_ltr)
{
gtk_widget_add_css_class (self->end_indicator, "right");
gtk_widget_remove_css_class (self->end_indicator, "left");
}
else
{
gtk_widget_add_css_class (self->end_indicator, "left");
gtk_widget_remove_css_class (self->end_indicator, "right");
}
}
static GtkStateFlags
get_start_indicator_state (GtkModelButton *self)
{
GtkStateFlags state = gtk_widget_get_state_flags (GTK_WIDGET (self));
if (self->role == GTK_BUTTON_ROLE_CHECK ||
self->role == GTK_BUTTON_ROLE_RADIO)
{
if (self->active)
state |= GTK_STATE_FLAG_CHECKED;
else
state &= ~GTK_STATE_FLAG_CHECKED;
}
return state;
}
static void
update_start_indicator (GtkModelButton *self)
{
const gboolean is_ltr = gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_LTR;
if (!self->start_indicator)
return;
gtk_widget_set_state_flags (self->start_indicator, get_start_indicator_state (self), TRUE);
if (is_ltr)
{
gtk_widget_add_css_class (self->start_indicator, "left");
gtk_widget_remove_css_class (self->start_indicator, "right");
}
else
{
gtk_widget_add_css_class (self->start_indicator, "right");
gtk_widget_remove_css_class (self->start_indicator, "left");
}
}
static void
gtk_model_button_update_state (GtkModelButton *self)
{
GtkStateFlags indicator_state;
update_start_indicator (self);
update_end_indicator (self);
indicator_state = get_start_indicator_state (self);
if (self->iconic)
gtk_widget_set_state_flags (GTK_WIDGET (self), indicator_state, TRUE);
}
static void
gtk_model_button_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_flags)
{
gtk_model_button_update_state (GTK_MODEL_BUTTON (widget));
GTK_WIDGET_CLASS (gtk_model_button_parent_class)->state_flags_changed (widget, previous_flags);
}
static void
gtk_model_button_direction_changed (GtkWidget *widget,
GtkTextDirection previous_dir)
{
GtkModelButton *button = GTK_MODEL_BUTTON (widget);
gtk_model_button_update_state (button);
update_node_ordering (button);
GTK_WIDGET_CLASS (gtk_model_button_parent_class)->direction_changed (widget, previous_dir);
}
static void
update_node_name (GtkModelButton *self)
{
const char *start_name;
const char *end_name;
switch (self->role)
{
case GTK_BUTTON_ROLE_TITLE:
start_name = "arrow";
end_name = "";
break;
case GTK_BUTTON_ROLE_NORMAL:
start_name = NULL;
if (self->menu_name || self->popover)
end_name = "arrow";
else
end_name = NULL;
break;
case GTK_BUTTON_ROLE_CHECK:
start_name = "check";
end_name = NULL;
break;
case GTK_BUTTON_ROLE_RADIO:
start_name = "radio";
end_name = NULL;
break;
default:
g_assert_not_reached ();
}
if (self->iconic)
{
start_name = NULL;
end_name = NULL;
}
if (start_name && !self->start_indicator)
{
self->start_indicator = gtk_builtin_icon_new (start_name);
gtk_widget_set_halign (self->start_indicator, GTK_ALIGN_CENTER);
gtk_widget_set_valign (self->start_indicator, GTK_ALIGN_CENTER);
update_start_indicator (self);
gtk_box_append (GTK_BOX (self->start_box), self->start_indicator);
}
else if (start_name)
{
gtk_css_node_set_name (gtk_widget_get_css_node (self->start_indicator), g_quark_from_static_string (start_name));
}
else if (self->start_indicator)
{
gtk_box_remove (GTK_BOX (self->start_box), self->start_indicator);
self->start_indicator = NULL;
}
if (end_name && !self->end_indicator)
{
self->end_indicator = gtk_builtin_icon_new (end_name);
gtk_widget_set_halign (self->end_indicator, GTK_ALIGN_CENTER);
gtk_widget_set_valign (self->end_indicator, GTK_ALIGN_CENTER);
gtk_widget_set_parent (self->end_indicator, GTK_WIDGET (self));
update_end_indicator (self);
}
else if (end_name)
{
gtk_css_node_set_name (gtk_widget_get_css_node (self->end_indicator), g_quark_from_static_string (end_name));
}
else
{
g_clear_pointer (&self->end_indicator, gtk_widget_unparent);
}
}
static void
update_accessible_properties (GtkModelButton *button)
{
if (button->menu_name || button->popover)
{
gtk_accessible_update_state (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_STATE_EXPANDED, FALSE,
-1);
gtk_accessible_update_property (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_PROPERTY_HAS_POPUP, TRUE,
-1);
}
else
{
gtk_accessible_reset_property (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_PROPERTY_HAS_POPUP);
gtk_accessible_reset_state (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_STATE_EXPANDED);
}
if (button->popover)
gtk_accessible_update_relation (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_RELATION_CONTROLS, button->popover, NULL,
-1);
else
gtk_accessible_reset_relation (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_RELATION_CONTROLS);
if (button->role == GTK_BUTTON_ROLE_CHECK ||
button->role == GTK_BUTTON_ROLE_RADIO)
gtk_accessible_update_state (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_STATE_CHECKED, button->active,
-1);
else
gtk_accessible_reset_state (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_STATE_CHECKED);
gtk_accessible_update_relation (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_RELATION_LABELLED_BY, button->label, NULL,
-1);
if (button->accel_label)
{
const char *text = gtk_label_get_label (GTK_LABEL (button->accel_label));
gtk_accessible_update_property (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_PROPERTY_KEY_SHORTCUTS, text,
-1);
}
else
gtk_accessible_reset_property (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_PROPERTY_KEY_SHORTCUTS);
}
static void
gtk_model_button_set_role (GtkModelButton *self,
GtkButtonRole role)
{
if (role == self->role)
return;
self->role = role;
if (role == GTK_BUTTON_ROLE_TITLE)
{
gtk_widget_add_css_class (GTK_WIDGET (self), "title");
gtk_widget_set_halign (self->label, GTK_ALIGN_CENTER);
}
else
{
gtk_widget_remove_css_class (GTK_WIDGET (self), "title");
gtk_widget_set_halign (self->label, GTK_ALIGN_START);
}
update_node_name (self);
gtk_model_button_update_state (self);
update_at_context (self);
update_accessible_properties (self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ROLE]);
}
static void
update_visibility (GtkModelButton *self)
{
gboolean has_icon;
gboolean has_text;
has_icon = self->image && gtk_image_get_storage_type (GTK_IMAGE (self->image)) != GTK_IMAGE_EMPTY;
has_text = gtk_label_get_text (GTK_LABEL (self->label))[0] != '\0';
gtk_widget_set_visible (self->label, has_text && (!self->iconic || !has_icon));
gtk_widget_set_hexpand (self->label,
gtk_widget_get_visible (self->label) && !has_icon);
if (self->accel_label)
gtk_widget_set_visible (self->accel_label, has_text && (!self->iconic || !has_icon));
if (self->image)
{
gtk_widget_set_visible (self->image, has_icon && (self->iconic || !has_text));
gtk_widget_set_hexpand (self->image,
has_icon && (!has_text || !gtk_widget_get_visible (self->label)));
}
}
static void
update_tooltip (GtkModelButton *self)
{
if (self->iconic)
{
if (gtk_label_get_use_markup (GTK_LABEL (self->label)))
gtk_widget_set_tooltip_markup (GTK_WIDGET (self), gtk_label_get_text (GTK_LABEL (self->label)));
else
gtk_widget_set_tooltip_text (GTK_WIDGET (self), gtk_label_get_text (GTK_LABEL (self->label)));
}
else
{
gtk_widget_set_tooltip_text (GTK_WIDGET (self), NULL);
}
}
static void
gtk_model_button_set_icon (GtkModelButton *self,
GIcon *icon)
{
if (!self->image && icon)
{
self->image = g_object_new (GTK_TYPE_IMAGE,
"accessible-role", GTK_ACCESSIBLE_ROLE_PRESENTATION,
"gicon", icon,
NULL);
gtk_widget_insert_before (self->image, GTK_WIDGET (self), self->label);
}
else if (self->image && !icon)
{
g_clear_pointer (&self->image, gtk_widget_unparent);
}
else if (icon)
{
gtk_image_set_from_gicon (GTK_IMAGE (self->image), icon);
}
update_visibility (self);
update_tooltip (self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ICON]);
}
static void
gtk_model_button_set_text (GtkModelButton *button,
const char *text)
{
gtk_label_set_text_with_mnemonic (GTK_LABEL (button->label), text ? text : "");
update_visibility (button);
update_tooltip (button);
gtk_accessible_update_relation (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_RELATION_LABELLED_BY, button->label, NULL,
-1);
g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_TEXT]);
}
static void
gtk_model_button_set_use_markup (GtkModelButton *button,
gboolean use_markup)
{
use_markup = !!use_markup;
if (gtk_label_get_use_markup (GTK_LABEL (button->label)) == use_markup)
return;
gtk_label_set_use_markup (GTK_LABEL (button->label), use_markup);
update_visibility (button);
update_tooltip (button);
g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_USE_MARKUP]);
}
static void
gtk_model_button_set_active (GtkModelButton *button,
gboolean active)
{
active = !!active;
if (button->active == active)
return;
button->active = active;
update_accessible_properties (button);
gtk_model_button_update_state (button);
gtk_widget_queue_draw (GTK_WIDGET (button));
g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_ACTIVE]);
}
static void
gtk_model_button_set_menu_name (GtkModelButton *button,
const char *menu_name)
{
g_free (button->menu_name);
button->menu_name = g_strdup (menu_name);
update_node_name (button);
gtk_model_button_update_state (button);
update_accessible_properties (button);
gtk_widget_queue_resize (GTK_WIDGET (button));
g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_MENU_NAME]);
}
static void
gtk_model_button_set_iconic (GtkModelButton *self,
gboolean iconic)
{
GtkWidget *widget = GTK_WIDGET (self);
GtkCssNode *widget_node;
iconic = !!iconic;
if (self->iconic == iconic)
return;
self->iconic = iconic;
widget_node = gtk_widget_get_css_node (widget);
gtk_widget_set_visible (self->start_box, !iconic);
if (iconic)
{
gtk_css_node_set_name (widget_node, g_quark_from_static_string ("button"));
gtk_widget_add_css_class (widget, "model");
gtk_widget_add_css_class (widget, "image-button");
gtk_widget_remove_css_class (widget, "flat");
}
else
{
gtk_css_node_set_name (widget_node, g_quark_from_static_string ("modelbutton"));
gtk_widget_remove_css_class (widget, "model");
gtk_widget_remove_css_class (widget, "image-button");
gtk_widget_add_css_class (widget, "flat");
}
if (!iconic)
{
if (self->start_indicator)
{
gtk_box_remove (GTK_BOX (self->start_box), self->start_indicator);
self->start_indicator = NULL;
}
g_clear_pointer (&self->end_indicator, gtk_widget_unparent);
}
update_node_name (self);
update_visibility (self);
update_tooltip (self);
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ICONIC]);
}
static void
gtk_model_button_set_popover (GtkModelButton *button,
GtkWidget *popover)
{
if (button->popover)
gtk_widget_unparent (button->popover);
button->popover = popover;
if (button->popover)
{
gtk_widget_set_parent (button->popover, GTK_WIDGET (button));
gtk_popover_set_position (GTK_POPOVER (button->popover), GTK_POS_RIGHT);
}
update_accessible_properties (button);
update_node_name (button);
gtk_model_button_update_state (button);
gtk_widget_queue_resize (GTK_WIDGET (button));
g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_POPOVER]);
}
static void
update_accel (GtkModelButton *self,
const char *accel)
{
if (accel)
{
guint key;
GdkModifierType mods;
char *str;
if (!self->accel_label)
{
self->accel_label = g_object_new (GTK_TYPE_LABEL,
"accessible-role", GTK_ACCESSIBLE_ROLE_PRESENTATION,
"css-name", "accelerator",
NULL);
gtk_widget_insert_before (self->accel_label, GTK_WIDGET (self), NULL);
gtk_widget_set_hexpand (self->accel_label, TRUE),
gtk_widget_set_halign (self->accel_label, GTK_ALIGN_END);
}
gtk_accelerator_parse (accel, &key, &mods);
str = gtk_accelerator_get_label (key, mods);
gtk_label_set_label (GTK_LABEL (self->accel_label), str);
g_free (str);
if (GTK_IS_POPOVER (gtk_widget_get_native (GTK_WIDGET (self))))
{
GtkShortcutTrigger *trigger;
GtkShortcutAction *action;
if (self->controller)
{
while (g_list_model_get_n_items (G_LIST_MODEL (self->controller)) > 0)
{
GtkShortcut *shortcut = g_list_model_get_item (G_LIST_MODEL (self->controller), 0);
gtk_shortcut_controller_remove_shortcut (GTK_SHORTCUT_CONTROLLER (self->controller),
shortcut);
g_object_unref (shortcut);
}
}
else
{
self->controller = gtk_shortcut_controller_new ();
gtk_shortcut_controller_set_scope (GTK_SHORTCUT_CONTROLLER (self->controller), GTK_SHORTCUT_SCOPE_MANAGED);
gtk_widget_add_controller (GTK_WIDGET (self), self->controller);
}
trigger = gtk_keyval_trigger_new (key, mods);
action = gtk_signal_action_new ("clicked");
gtk_shortcut_controller_add_shortcut (GTK_SHORTCUT_CONTROLLER (self->controller),
gtk_shortcut_new (trigger, action));
}
}
else
{
g_clear_pointer (&self->accel_label, gtk_widget_unparent);
if (self->controller)
{
gtk_widget_remove_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (self->controller));
self->controller = NULL;
}
}
update_accessible_properties (self);
}
static void
gtk_model_button_set_accel (GtkModelButton *button,
const char *accel)
{
g_free (button->accel);
button->accel = g_strdup (accel);
update_accel (button, button->accel);
update_visibility (button);
g_object_notify_by_pspec (G_OBJECT (button), properties[PROP_ACCEL]);
}
static void
gtk_model_button_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkModelButton *self = GTK_MODEL_BUTTON (object);
switch (prop_id)
{
case PROP_ROLE:
g_value_set_enum (value, self->role);
break;
case PROP_ICON:
g_value_set_object (value, self->image ? gtk_image_get_gicon (GTK_IMAGE (self->image)) : NULL);
break;
case PROP_TEXT:
g_value_set_string (value, gtk_label_get_text (GTK_LABEL (self->label)));
break;
case PROP_USE_MARKUP:
g_value_set_boolean (value, gtk_label_get_use_markup (GTK_LABEL (self->label)));
break;
case PROP_ACTIVE:
g_value_set_boolean (value, self->active);
break;
case PROP_MENU_NAME:
g_value_set_string (value, self->menu_name);
break;
case PROP_POPOVER:
g_value_set_object (value, self->popover);
break;
case PROP_ICONIC:
g_value_set_boolean (value, self->iconic);
break;
case PROP_ACCEL:
g_value_set_string (value, self->accel);
break;
case PROP_INDICATOR_SIZE_GROUP:
g_value_set_object (value, self->indicators);
break;
case PROP_ACTION_NAME:
g_value_set_string (value, gtk_action_helper_get_action_name (self->action_helper));
break;
case PROP_ACTION_TARGET:
g_value_set_variant (value, gtk_action_helper_get_action_target_value (self->action_helper));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_model_button_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkModelButton *button = GTK_MODEL_BUTTON (object);
switch (prop_id)
{
case PROP_ROLE:
gtk_model_button_set_role (button, g_value_get_enum (value));
break;
case PROP_ICON:
gtk_model_button_set_icon (button, g_value_get_object (value));
break;
case PROP_TEXT:
gtk_model_button_set_text (button, g_value_get_string (value));
break;
case PROP_USE_MARKUP:
gtk_model_button_set_use_markup (button, g_value_get_boolean (value));
break;
case PROP_ACTIVE:
gtk_model_button_set_active (button, g_value_get_boolean (value));
break;
case PROP_MENU_NAME:
gtk_model_button_set_menu_name (button, g_value_get_string (value));
break;
case PROP_POPOVER:
gtk_model_button_set_popover (button, (GtkWidget *)g_value_get_object (value));
break;
case PROP_ICONIC:
gtk_model_button_set_iconic (button, g_value_get_boolean (value));
break;
case PROP_ACCEL:
gtk_model_button_set_accel (button, g_value_get_string (value));
break;
case PROP_INDICATOR_SIZE_GROUP:
if (button->indicators)
gtk_size_group_remove_widget (button->indicators, button->start_box);
button->indicators = GTK_SIZE_GROUP (g_value_get_object (value));
if (button->indicators)
gtk_size_group_add_widget (button->indicators, button->start_box);
break;
case PROP_ACTION_NAME:
gtk_model_button_set_action_name (GTK_ACTIONABLE (button), g_value_get_string (value));
break;
case PROP_ACTION_TARGET:
gtk_model_button_set_action_target_value (GTK_ACTIONABLE (button), g_value_get_variant (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_model_button_dispose (GObject *object)
{
GtkModelButton *model_button = GTK_MODEL_BUTTON (object);
g_clear_pointer (&model_button->menu_name, g_free);
G_OBJECT_CLASS (gtk_model_button_parent_class)->dispose (object);
}
static void
switch_menu (GtkModelButton *button)
{
GtkWidget *stack;
stack = gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_STACK);
if (stack != NULL)
{
gtk_stack_set_visible_child_name (GTK_STACK (stack), button->menu_name);
gtk_accessible_update_state (GTK_ACCESSIBLE (button),
GTK_ACCESSIBLE_STATE_EXPANDED, TRUE,
-1);
}
}
static void
gtk_model_button_clicked (GtkModelButton *self)
{
if (self->menu_name != NULL)
{
switch_menu (self);
}
else if (self->popover != NULL)
{
GtkPopoverMenu *menu;
GtkWidget *submenu;
menu = (GtkPopoverMenu *)gtk_widget_get_ancestor (GTK_WIDGET (self), GTK_TYPE_POPOVER_MENU);
submenu = self->popover;
gtk_popover_popup (GTK_POPOVER (submenu));
gtk_popover_menu_set_open_submenu (menu, submenu);
gtk_popover_menu_set_parent_menu (GTK_POPOVER_MENU (submenu), GTK_WIDGET (menu));
gtk_accessible_update_state (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_STATE_EXPANDED, TRUE,
-1);
}
else if (!self->keep_open)
{
GtkWidget *popover;
popover = gtk_widget_get_ancestor (GTK_WIDGET (self), GTK_TYPE_POPOVER);
if (popover)
gtk_popover_popdown (GTK_POPOVER (popover));
gtk_accessible_update_state (GTK_ACCESSIBLE (self),
GTK_ACCESSIBLE_STATE_EXPANDED, FALSE,
-1);
}
if (self->action_helper)
gtk_action_helper_activate (self->action_helper);
}
static gboolean
toggle_cb (GtkWidget *widget,
GVariant *args,
gpointer user_data)
{
GtkModelButton *self = GTK_MODEL_BUTTON (widget);
self->keep_open = self->role != GTK_BUTTON_ROLE_NORMAL;
g_signal_emit (widget, signals[SIGNAL_CLICKED], 0);
self->keep_open = FALSE;
return TRUE;
}
static void
gtk_model_button_finalize (GObject *object)
{
GtkModelButton *button = GTK_MODEL_BUTTON (object);
g_clear_pointer (&button->image, gtk_widget_unparent);
g_clear_pointer (&button->label, gtk_widget_unparent);
g_clear_pointer (&button->start_box, gtk_widget_unparent);
g_clear_pointer (&button->accel_label, gtk_widget_unparent);
g_clear_pointer (&button->end_indicator, gtk_widget_unparent);
g_clear_object (&button->action_helper);
g_free (button->accel);
g_clear_pointer (&button->popover, gtk_widget_unparent);
if (button->open_timeout)
g_source_remove (button->open_timeout);
G_OBJECT_CLASS (gtk_model_button_parent_class)->finalize (object);
}
static gboolean
gtk_model_button_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkModelButton *button = GTK_MODEL_BUTTON (widget);
if (gtk_widget_is_focus (widget))
{
if (direction == GTK_DIR_LEFT &&
button->role == GTK_BUTTON_ROLE_TITLE &&
button->menu_name != NULL)
{
switch_menu (button);
return TRUE;
}
else if (direction == GTK_DIR_RIGHT &&
button->role == GTK_BUTTON_ROLE_NORMAL &&
button->menu_name != NULL)
{
switch_menu (button);
return TRUE;
}
else if (direction == GTK_DIR_RIGHT &&
button->role == GTK_BUTTON_ROLE_NORMAL &&
button->popover != NULL)
{
GtkPopoverMenu *menu;
GtkWidget *submenu;
menu = GTK_POPOVER_MENU (gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_POPOVER_MENU));
submenu = button->popover;
gtk_popover_popup (GTK_POPOVER (submenu));
gtk_popover_menu_set_open_submenu (menu, submenu);
gtk_popover_menu_set_parent_menu (GTK_POPOVER_MENU (submenu), GTK_WIDGET (menu));
return TRUE;
}
}
else
{
gtk_widget_grab_focus (widget);
return TRUE;
}
return FALSE;
}
static void
gtk_model_button_class_init (GtkModelButtonClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
GtkShortcutAction *action;
guint activate_keyvals[] = {
GDK_KEY_Return, GDK_KEY_ISO_Enter, GDK_KEY_KP_Enter
};
guint toggle_keyvals[] = {
GDK_KEY_space, GDK_KEY_KP_Space
};
int i;
object_class->dispose = gtk_model_button_dispose;
object_class->finalize = gtk_model_button_finalize;
object_class->get_property = gtk_model_button_get_property;
object_class->set_property = gtk_model_button_set_property;
widget_class->state_flags_changed = gtk_model_button_state_flags_changed;
widget_class->direction_changed = gtk_model_button_direction_changed;
widget_class->focus = gtk_model_button_focus;
class->clicked = gtk_model_button_clicked;
/**
* GtkModelButton:role:
*
* Specifies whether the button is a plain, check or radio button.
* When GtkActionable:action-name is set, the role will be determined
* from the action and does not have to be set explicitly.
*/
properties[PROP_ROLE] =
g_param_spec_enum ("role", NULL, NULL,
GTK_TYPE_BUTTON_ROLE,
GTK_BUTTON_ROLE_NORMAL,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkModelButton:icon:
*
* A GIcon that will be used if iconic appearance for the button is
* desired.
*/
properties[PROP_ICON] =
g_param_spec_object ("icon", NULL, NULL,
G_TYPE_ICON,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkModelButton:text:
*
* The label for the button.
*/
properties[PROP_TEXT] =
g_param_spec_string ("text", NULL, NULL,
"",
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkModelButton:use-markup:
*
* If %TRUE, XML tags in the text of the button are interpreted as by
* pango_parse_markup() to format the enclosed spans of text. If %FALSE, the
* text will be displayed verbatim.
*/
properties[PROP_USE_MARKUP] =
g_param_spec_boolean ("use-markup", NULL, NULL,
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkModelButton:active:
*
* The state of the button. This is reflecting the state of the associated
* GAction.
*/
properties[PROP_ACTIVE] =
g_param_spec_boolean ("active", NULL, NULL,
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkModelButton:menu-name:
*
* The name of a submenu to open when the button is activated. * If this is set, the button should not have an action associated with it.
*/
properties[PROP_MENU_NAME] =
g_param_spec_string ("menu-name", NULL, NULL,
NULL,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
properties[PROP_POPOVER] =
g_param_spec_object ("popover", NULL, NULL,
GTK_TYPE_POPOVER,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkModelButton:iconic:
*
* If this property is set, the button will show an icon if one is set.
* If no icon is set, the text will be used. This is typically used for
* horizontal sections of linked buttons.
*/
properties[PROP_ICONIC] =
g_param_spec_boolean ("iconic", NULL, NULL,
FALSE,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
/**
* GtkModelButton:indicator-size-group:
*
* Containers like GtkPopoverMenu can provide a size group
* in this property to align the checks and radios of all
* the model buttons in a menu.
*/
properties[PROP_INDICATOR_SIZE_GROUP] =
g_param_spec_object ("indicator-size-group", NULL, NULL,
GTK_TYPE_SIZE_GROUP,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
properties[PROP_ACCEL] =
g_param_spec_string ("accel", NULL, NULL,
NULL,
G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, LAST_PROP, properties);
g_object_class_override_property (object_class, PROP_ACTION_NAME, "action-name");
g_object_class_override_property (object_class, PROP_ACTION_TARGET, "action-target");
signals[SIGNAL_CLICKED] = g_signal_new (I_("clicked"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkModelButtonClass, clicked),
NULL, NULL,
NULL,
G_TYPE_NONE, 0);
gtk_widget_class_set_activate_signal (widget_class, signals[SIGNAL_CLICKED]);
gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BOX_LAYOUT);
gtk_widget_class_set_css_name (widget_class, I_("modelbutton"));
gtk_widget_class_set_accessible_role (widget_class, GTK_ACCESSIBLE_ROLE_MENU_ITEM);
action = gtk_signal_action_new ("clicked");
for (i = 0; i < G_N_ELEMENTS (activate_keyvals); i++)
{
GtkShortcut *shortcut;
shortcut = gtk_shortcut_new (gtk_keyval_trigger_new (activate_keyvals[i], 0),
g_object_ref (action));
gtk_widget_class_add_shortcut (widget_class, shortcut);
g_object_unref (shortcut);
}
g_object_unref (action);
action = gtk_callback_action_new (toggle_cb, NULL, NULL);
for (i = 0; i < G_N_ELEMENTS (toggle_keyvals); i++)
{
GtkShortcut *shortcut;
shortcut = gtk_shortcut_new (gtk_keyval_trigger_new (toggle_keyvals[i], 0),
g_object_ref (action));
gtk_widget_class_add_shortcut (widget_class, shortcut);
g_object_unref (shortcut);
}
g_object_unref (action);
}
static gboolean
open_submenu (gpointer data)
{
GtkModelButton *button = data;
GtkPopover *popover;
popover = (GtkPopover*)gtk_widget_get_ancestor (GTK_WIDGET (button), GTK_TYPE_POPOVER);
if (GTK_IS_POPOVER_MENU (popover))
{
gtk_popover_menu_set_active_item (GTK_POPOVER_MENU (popover), GTK_WIDGET (button));
if (button->popover)
{
GtkWidget *submenu = button->popover;
if (gtk_popover_menu_get_open_submenu (GTK_POPOVER_MENU (popover)) != submenu)
gtk_popover_menu_close_submenus (GTK_POPOVER_MENU (popover));
gtk_popover_popup (GTK_POPOVER (submenu));
gtk_popover_menu_set_open_submenu (GTK_POPOVER_MENU (popover), submenu);
gtk_popover_menu_set_parent_menu (GTK_POPOVER_MENU (submenu), GTK_WIDGET (popover));
}
}
button->open_timeout = 0;
return G_SOURCE_REMOVE;
}
#define OPEN_TIMEOUT 80
static void
start_open (GtkModelButton *button)
{
if (button->open_timeout)
g_source_remove (button->open_timeout);
if (button->popover &&
gtk_widget_get_visible (button->popover))
return;
button->open_timeout = g_timeout_add (OPEN_TIMEOUT, open_submenu, button);
gdk_source_set_static_name_by_id (button->open_timeout, "[gtk] open_submenu");
}
static void
stop_open (GtkModelButton *button)
{
if (button->open_timeout)
{
g_source_remove (button->open_timeout);
button->open_timeout = 0;
}
}
static void
pointer_cb (GObject *object,
GParamSpec *pspec,
gpointer data)
{
GtkWidget *target = GTK_WIDGET (data);
GtkWidget *popover;
gboolean contains;
contains = gtk_event_controller_motion_contains_pointer (GTK_EVENT_CONTROLLER_MOTION (object));
popover = gtk_widget_get_ancestor (target, GTK_TYPE_POPOVER_MENU);
if (contains)
{
if (popover)
{
if (gtk_popover_menu_get_open_submenu (GTK_POPOVER_MENU (popover)) != NULL)
start_open (GTK_MODEL_BUTTON (target));
else
open_submenu (target);
}
}
else
{
GtkModelButton *button = data;
stop_open (button);
if (popover)
gtk_popover_menu_set_active_item (GTK_POPOVER_MENU (popover), NULL);
}
}
static void
motion_cb (GtkEventController *controller,
double x,
double y,
gpointer data)
{
start_open (GTK_MODEL_BUTTON (data));
}
static void
focus_in_cb (GtkEventController *controller,
gpointer data)
{
GtkWidget *target;
GtkWidget *popover;
target = gtk_event_controller_get_widget (controller);
popover = gtk_widget_get_ancestor (target, GTK_TYPE_POPOVER_MENU);
if (popover)
gtk_popover_menu_set_active_item (GTK_POPOVER_MENU (popover), target);
}
static void
gesture_pressed (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkWidget *widget)
{
if (gtk_widget_get_focus_on_click (widget) && !gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
}
static void
gesture_released (GtkGestureClick *gesture,
guint n_press,
double x,
double y,
GtkWidget *widget)
{
if (gtk_widget_contains (widget, x, y))
g_signal_emit (widget, signals[SIGNAL_CLICKED], 0);
}
static void
gesture_unpaired_release (GtkGestureClick *gesture,
double x,
double y,
guint button,
GdkEventSequence *sequence,
GtkWidget *widget)
{
if (gtk_widget_contains (widget, x, y))
g_signal_emit (widget, signals[SIGNAL_CLICKED], 0);
}
static void
gtk_model_button_init (GtkModelButton *self)
{
GtkEventController *controller;
GtkGesture *gesture;
gtk_widget_set_focusable (GTK_WIDGET (self), TRUE);
self->role = GTK_BUTTON_ROLE_NORMAL;
self->label = g_object_new (GTK_TYPE_LABEL, "accessible-role", GTK_ACCESSIBLE_ROLE_PRESENTATION, NULL);
gtk_widget_set_halign (self->label, GTK_ALIGN_START);
gtk_widget_set_parent (self->label, GTK_WIDGET (self));
self->start_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
gtk_widget_insert_after (self->start_box, GTK_WIDGET (self), NULL);
update_node_ordering (self);
gtk_widget_add_css_class (GTK_WIDGET (self), "flat");
controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "notify::contains-pointer", G_CALLBACK (pointer_cb), self);
g_signal_connect (controller, "motion", G_CALLBACK (motion_cb), self);
gtk_widget_add_controller (GTK_WIDGET (self), controller);
controller = gtk_event_controller_focus_new ();
gtk_event_controller_set_propagation_limit (controller, GTK_LIMIT_NONE);
g_signal_connect (controller, "enter", G_CALLBACK (focus_in_cb), NULL);
gtk_widget_add_controller (GTK_WIDGET (self), controller);
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_touch_only (GTK_GESTURE_SINGLE (gesture), FALSE);
gtk_gesture_single_set_exclusive (GTK_GESTURE_SINGLE (gesture), TRUE);
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), GDK_BUTTON_PRIMARY);
g_signal_connect (gesture, "pressed", G_CALLBACK (gesture_pressed), self);
g_signal_connect (gesture, "released", G_CALLBACK (gesture_released), self);
g_signal_connect (gesture, "unpaired-release", G_CALLBACK (gesture_unpaired_release), self);
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture), GTK_PHASE_CAPTURE);
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (gesture));
}
/**
* gtk_model_button_new:
*
* Creates a new GtkModelButton.
*
* Returns: the newly created GtkModelButton widget
*/
GtkWidget *
gtk_model_button_new (void)
{
return g_object_new (GTK_TYPE_MODEL_BUTTON, NULL);
}