743 lines
23 KiB
C
743 lines
23 KiB
C
/*
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* Copyright © 2014 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the licence, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author: Matthias Clasen
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*/
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#include "config.h"
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#include "gtkmodelbutton.h"
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#include "gtkbutton.h"
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#include "gtkbuttonprivate.h"
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#include "gtkwidgetprivate.h"
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#include "gtkmenutrackeritem.h"
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#include "gtkimage.h"
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#include "gtklabel.h"
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#include "gtkbox.h"
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#include "gtkstylecontext.h"
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#include "gtktypebuiltins.h"
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struct _GtkModelButton
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{
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GtkButton parent_instance;
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GtkWidget *box;
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GtkWidget *image;
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GtkWidget *label;
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gboolean toggled;
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gboolean has_submenu;
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gboolean centered;
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gboolean inverted;
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gboolean iconic;
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GtkMenuTrackerItemRole role;
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};
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typedef GtkButtonClass GtkModelButtonClass;
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G_DEFINE_TYPE (GtkModelButton, gtk_model_button, GTK_TYPE_BUTTON)
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enum
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{
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PROP_0,
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PROP_ACTION_ROLE,
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PROP_ICON,
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PROP_TEXT,
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PROP_TOGGLED,
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PROP_ACCEL,
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PROP_HAS_SUBMENU,
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PROP_INVERTED,
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PROP_CENTERED,
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PROP_ICONIC
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};
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static void
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gtk_model_button_set_action_role (GtkModelButton *button,
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GtkMenuTrackerItemRole role)
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{
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AtkObject *accessible;
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AtkRole a11y_role;
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if (role == button->role)
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return;
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button->role = role;
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gtk_widget_queue_draw (GTK_WIDGET (button));
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accessible = gtk_widget_get_accessible (GTK_WIDGET (button));
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switch (role)
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{
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case GTK_MENU_TRACKER_ITEM_ROLE_NORMAL:
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a11y_role = ATK_ROLE_PUSH_BUTTON;
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break;
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case GTK_MENU_TRACKER_ITEM_ROLE_CHECK:
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a11y_role = ATK_ROLE_CHECK_BOX;
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break;
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case GTK_MENU_TRACKER_ITEM_ROLE_RADIO:
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a11y_role = ATK_ROLE_RADIO_BUTTON;
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break;
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default:
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g_assert_not_reached ();
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}
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atk_object_set_role (accessible, a11y_role);
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}
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static void
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update_visibility (GtkModelButton *button)
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{
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gboolean has_icon;
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gboolean has_text;
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has_icon = gtk_image_get_storage_type (GTK_IMAGE (button->image)) != GTK_IMAGE_EMPTY;
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has_text = gtk_label_get_text (GTK_LABEL (button->label))[0] != '\0';
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gtk_widget_set_visible (button->image, has_icon);
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gtk_widget_set_visible (button->label, has_text && (!button->iconic || !has_icon));
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}
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static void
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gtk_model_button_set_icon (GtkModelButton *button,
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GIcon *icon)
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{
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gtk_image_set_from_gicon (GTK_IMAGE (button->image), icon, GTK_ICON_SIZE_MENU);
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update_visibility (button);
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}
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static void
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gtk_model_button_set_text (GtkModelButton *button,
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const gchar *text)
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{
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gtk_label_set_text_with_mnemonic (GTK_LABEL (button->label), text);
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update_visibility (button);
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}
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static void
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gtk_model_button_set_accel (GtkModelButton *button,
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const gchar *accel)
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{
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/* ignore */
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}
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static void
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gtk_model_button_set_toggled (GtkModelButton *button,
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gboolean toggled)
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{
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button->toggled = toggled;
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gtk_widget_queue_draw (GTK_WIDGET (button));
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}
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static void
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gtk_model_button_set_has_submenu (GtkModelButton *button,
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gboolean has_submenu)
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{
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button->has_submenu = has_submenu;
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gtk_widget_queue_resize (GTK_WIDGET (button));
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}
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static void
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gtk_model_button_set_inverted (GtkModelButton *button,
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gboolean inverted)
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{
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button->inverted = inverted;
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gtk_widget_queue_resize (GTK_WIDGET (button));
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}
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static void
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gtk_model_button_set_centered (GtkModelButton *button,
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gboolean centered)
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{
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button->centered = centered;
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gtk_widget_set_halign (button->box, button->centered ? GTK_ALIGN_CENTER : GTK_ALIGN_FILL);
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gtk_widget_queue_draw (GTK_WIDGET (button));
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}
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static void
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gtk_model_button_set_iconic (GtkModelButton *button,
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gboolean iconic)
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{
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button->iconic = iconic;
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if (iconic)
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{
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gtk_style_context_remove_class (gtk_widget_get_style_context (GTK_WIDGET (button)),
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GTK_STYLE_CLASS_MENUITEM);
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gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NORMAL);
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}
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else
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{
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gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (button)),
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GTK_STYLE_CLASS_MENUITEM);
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gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
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}
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update_visibility (button);
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gtk_widget_queue_resize (GTK_WIDGET (button));
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}
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static void
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gtk_model_button_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkModelButton *button = GTK_MODEL_BUTTON (object);
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switch (prop_id)
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{
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case PROP_ACTION_ROLE:
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gtk_model_button_set_action_role (button, g_value_get_enum (value));
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break;
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case PROP_ICON:
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gtk_model_button_set_icon (button, g_value_get_object (value));
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break;
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case PROP_TEXT:
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gtk_model_button_set_text (button, g_value_get_string (value));
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break;
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case PROP_TOGGLED:
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gtk_model_button_set_toggled (button, g_value_get_boolean (value));
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break;
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case PROP_ACCEL:
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gtk_model_button_set_accel (button, g_value_get_string (value));
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break;
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case PROP_HAS_SUBMENU:
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gtk_model_button_set_has_submenu (button, g_value_get_boolean (value));
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break;
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case PROP_INVERTED:
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gtk_model_button_set_inverted (button, g_value_get_boolean (value));
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break;
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case PROP_CENTERED:
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gtk_model_button_set_centered (button, g_value_get_boolean (value));
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break;
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case PROP_ICONIC:
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gtk_model_button_set_iconic (button, g_value_get_boolean (value));
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break;
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default:
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g_assert_not_reached ();
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}
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}
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static void
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gtk_model_button_get_full_border (GtkModelButton *button,
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GtkBorder *border,
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gint *indicator)
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{
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gint indicator_size, indicator_spacing;
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gint border_width;
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border_width = gtk_container_get_border_width (GTK_CONTAINER (button));
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gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &indicator_size, NULL);
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indicator_spacing = indicator_size / 8;
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border->left = border_width;
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border->right = border_width;
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border->top = border_width;
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border->bottom = border_width;
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if (button->iconic)
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*indicator = 0;
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else
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*indicator = indicator_size + 2 * indicator_spacing;
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}
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static gboolean
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has_sibling_with_indicator (GtkWidget *button)
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{
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GtkWidget *parent;
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gboolean has_indicator;
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GList *children, *l;
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GtkModelButton *sibling;
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has_indicator = FALSE;
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parent = gtk_widget_get_parent (button);
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children = gtk_container_get_children (GTK_CONTAINER (parent));
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for (l = children; l; l = l->next)
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{
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sibling = l->data;
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if (!GTK_IS_MODEL_BUTTON (sibling))
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continue;
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if (!gtk_widget_is_visible (GTK_WIDGET (sibling)))
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continue;
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if (!sibling->centered &&
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(sibling->has_submenu || sibling->role != GTK_MENU_TRACKER_ITEM_ROLE_NORMAL))
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{
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has_indicator = TRUE;
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break;
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}
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}
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g_list_free (children);
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return has_indicator;
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}
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static gboolean
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needs_indicator (GtkModelButton *button)
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{
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if (button->role != GTK_MENU_TRACKER_ITEM_ROLE_NORMAL)
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return TRUE;
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return has_sibling_with_indicator (GTK_WIDGET (button));
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}
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static void
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gtk_model_button_get_preferred_width_for_height (GtkWidget *widget,
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gint height,
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gint *minimum,
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gint *natural)
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{
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GtkModelButton *button = GTK_MODEL_BUTTON (widget);
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GtkWidget *child;
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GtkBorder border;
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gint indicator;
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gtk_model_button_get_full_border (button, &border, &indicator);
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (child && gtk_widget_get_visible (child))
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{
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if (height > -1)
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height -= border.top + border.bottom;
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_gtk_widget_get_preferred_size_for_size (child,
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GTK_ORIENTATION_HORIZONTAL,
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height,
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minimum, natural,
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NULL, NULL);
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}
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else
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{
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*minimum = 0;
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*natural = 0;
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}
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*minimum += border.left + border.right;
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*natural += border.left + border.right;
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if (button->centered)
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{
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*minimum += 2 * indicator;
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*natural += 2 * indicator;
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}
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else if (needs_indicator (button))
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{
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*minimum += indicator;
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*natural += indicator;
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}
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}
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static void
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gtk_model_button_get_preferred_width (GtkWidget *widget,
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gint *minimum,
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gint *natural)
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{
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gtk_model_button_get_preferred_width_for_height (widget, -1, minimum, natural);
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}
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static void
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gtk_model_button_get_preferred_height_and_baseline_for_width (GtkWidget *widget,
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gint width,
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gint *minimum,
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gint *natural,
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gint *minimum_baseline,
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gint *natural_baseline)
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{
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GtkModelButton *button = GTK_MODEL_BUTTON (widget);
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GtkWidget *child;
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GtkBorder border;
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gint indicator;
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gtk_model_button_get_full_border (button, &border, &indicator);
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (child && gtk_widget_get_visible (child))
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{
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gint child_min, child_nat;
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gint child_min_baseline = -1, child_nat_baseline = -1;
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if (width > -1)
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{
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width -= border.left + border.right;
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if (button->centered)
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width -= 2 * indicator;
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else if (needs_indicator (button))
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width -= indicator;
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}
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gtk_widget_get_preferred_height_and_baseline_for_width (child, width,
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&child_min, &child_nat,
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&child_min_baseline, &child_nat_baseline);
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if (button->centered)
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{
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*minimum = MAX (2 * indicator, child_min);
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*natural = MAX (2 * indicator, child_nat);
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}
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else if (needs_indicator (button))
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{
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*minimum = MAX (indicator, child_min);
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*natural = MAX (indicator, child_nat);
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}
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else
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{
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*minimum = child_min;
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*natural = child_nat;
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}
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if (minimum_baseline && child_min_baseline >= 0)
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*minimum_baseline = child_min_baseline + border.top + (*minimum - child_min) / 2;
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if (natural_baseline && child_nat_baseline >= 0)
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*natural_baseline = child_nat_baseline + border.top + (*natural - child_nat) / 2;
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}
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else
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{
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if (button->centered)
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{
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*minimum = 2 * indicator;
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*natural = 2 * indicator;
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}
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else if (needs_indicator (button))
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{
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*minimum = indicator;
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*natural = indicator;
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}
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else
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{
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*minimum = 0;
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*natural = 0;
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}
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}
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*minimum += border.top + border.bottom;
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*natural += border.top + border.bottom;
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}
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static void
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gtk_model_button_get_preferred_height_for_width (GtkWidget *widget,
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gint width,
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gint *minimum,
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gint *natural)
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{
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gtk_model_button_get_preferred_height_and_baseline_for_width (widget, width,
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minimum, natural,
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NULL, NULL);
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}
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static void
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gtk_model_button_get_preferred_height (GtkWidget *widget,
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gint *minimum,
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gint *natural)
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{
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gtk_model_button_get_preferred_height_and_baseline_for_width (widget, -1,
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minimum, natural,
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NULL, NULL);
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}
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static gboolean
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indicator_is_left (GtkWidget *widget)
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{
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GtkModelButton *button = GTK_MODEL_BUTTON (widget);
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return ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL && !button->inverted) ||
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(gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR && button->inverted));
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}
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static void
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gtk_model_button_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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GtkModelButton *button = GTK_MODEL_BUTTON (widget);
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PangoContext *pango_context;
|
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PangoFontMetrics *metrics;
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GtkAllocation child_allocation;
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gint baseline;
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GtkWidget *child;
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gtk_widget_set_allocation (widget, allocation);
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if (gtk_widget_get_realized (widget))
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gdk_window_move_resize (gtk_button_get_event_window (GTK_BUTTON (widget)),
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allocation->x, allocation->y,
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allocation->width, allocation->height);
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child = gtk_bin_get_child (GTK_BIN (widget));
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if (child && gtk_widget_get_visible (child))
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{
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GtkBorder border;
|
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gint indicator;
|
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gtk_model_button_get_full_border (button, &border, &indicator);
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|
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if (button->centered)
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{
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border.left += indicator;
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border.right += indicator;
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}
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else if (needs_indicator (button))
|
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{
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if (indicator_is_left (widget))
|
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border.left += indicator;
|
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else
|
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border.right += indicator;
|
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}
|
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child_allocation.x = allocation->x + border.left;
|
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child_allocation.y = allocation->y + border.top;
|
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child_allocation.width = allocation->width - border.left - border.right;
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child_allocation.height = allocation->height - border.top - border.bottom;
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baseline = gtk_widget_get_allocated_baseline (widget);
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if (baseline != -1)
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baseline -= border.top;
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gtk_widget_size_allocate_with_baseline (child, &child_allocation, baseline);
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}
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|
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pango_context = gtk_widget_get_pango_context (widget);
|
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metrics = pango_context_get_metrics (pango_context,
|
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pango_context_get_font_description (pango_context),
|
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pango_context_get_language (pango_context));
|
|
GTK_BUTTON (button)->priv->baseline_align =
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(double)pango_font_metrics_get_ascent (metrics) /
|
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(pango_font_metrics_get_ascent (metrics) + pango_font_metrics_get_descent (metrics));
|
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pango_font_metrics_unref (metrics);
|
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}
|
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|
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static GtkStateFlags
|
|
get_button_state (GtkModelButton *model_button)
|
|
{
|
|
GtkButton *button = GTK_BUTTON (model_button);
|
|
GtkStateFlags state;
|
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|
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state = gtk_widget_get_state_flags (GTK_WIDGET (model_button));
|
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|
|
state &= ~(GTK_STATE_FLAG_INCONSISTENT |
|
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GTK_STATE_FLAG_ACTIVE |
|
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GTK_STATE_FLAG_SELECTED |
|
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GTK_STATE_FLAG_PRELIGHT);
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|
|
if (model_button->toggled ||
|
|
(button->priv->button_down && button->priv->in_button))
|
|
state |= GTK_STATE_FLAG_ACTIVE;
|
|
|
|
if (button->priv->activate_timeout ||
|
|
(button->priv->button_down && button->priv->in_button))
|
|
state |= GTK_STATE_FLAG_SELECTED;
|
|
|
|
if (button->priv->in_button)
|
|
state |= GTK_STATE_FLAG_PRELIGHT;
|
|
|
|
if (model_button->has_submenu)
|
|
state &= ~GTK_STATE_FLAG_ACTIVE;
|
|
|
|
return state;
|
|
}
|
|
|
|
static gint
|
|
gtk_model_button_draw (GtkWidget *widget,
|
|
cairo_t *cr)
|
|
{
|
|
GtkModelButton *model_button = GTK_MODEL_BUTTON (widget);
|
|
GtkButton *button = GTK_BUTTON (widget);
|
|
GtkWidget *child;
|
|
GtkStyleContext *context;
|
|
GtkStateFlags state;
|
|
gint border_width;
|
|
gint x, y;
|
|
gint width, height;
|
|
gint indicator_size, indicator_spacing;
|
|
gint baseline;
|
|
|
|
state = get_button_state (model_button);
|
|
|
|
context = gtk_widget_get_style_context (widget);
|
|
gtk_style_context_save (context);
|
|
gtk_style_context_set_state (context, state);
|
|
|
|
if (model_button->iconic)
|
|
{
|
|
GTK_WIDGET_CLASS (gtk_model_button_parent_class)->draw (widget, cr);
|
|
goto out;
|
|
}
|
|
|
|
width = gtk_widget_get_allocated_width (widget);
|
|
height = gtk_widget_get_allocated_height (widget);
|
|
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
|
baseline = gtk_widget_get_allocated_baseline (widget);
|
|
|
|
gtk_icon_size_lookup (GTK_ICON_SIZE_MENU, &indicator_size, NULL);
|
|
indicator_spacing = indicator_size / 8;
|
|
|
|
x = width - border_width - indicator_spacing - indicator_size;
|
|
|
|
if (indicator_is_left (widget))
|
|
x = width - (indicator_size + x);
|
|
|
|
if (baseline == -1)
|
|
y = (height - indicator_size) / 2;
|
|
else
|
|
y = CLAMP (baseline - indicator_size * button->priv->baseline_align,
|
|
0, height - indicator_size);
|
|
|
|
gtk_render_background (context, cr,
|
|
border_width, border_width,
|
|
width - 2 * border_width,
|
|
height - 2 * border_width);
|
|
gtk_render_frame (context, cr,
|
|
border_width, border_width,
|
|
width - 2 * border_width,
|
|
height - 2 * border_width);
|
|
|
|
if (model_button->has_submenu)
|
|
{
|
|
state = state & ~(GTK_STATE_FLAG_DIR_LTR|GTK_STATE_FLAG_DIR_RTL);
|
|
if (indicator_is_left (widget))
|
|
state = state | GTK_STATE_FLAG_DIR_RTL;
|
|
else
|
|
state = state | GTK_STATE_FLAG_DIR_LTR;
|
|
|
|
gtk_style_context_set_state (context, state);
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
|
|
gtk_render_expander (context, cr, x, y, indicator_size, indicator_size);
|
|
}
|
|
else if (model_button->role == GTK_MENU_TRACKER_ITEM_ROLE_CHECK)
|
|
{
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_CHECK);
|
|
gtk_render_check (context, cr, x, y, indicator_size, indicator_size);
|
|
}
|
|
else if (model_button->role == GTK_MENU_TRACKER_ITEM_ROLE_RADIO)
|
|
{
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_RADIO);
|
|
gtk_render_option (context, cr, x, y, indicator_size, indicator_size);
|
|
}
|
|
|
|
if (gtk_widget_has_visible_focus (widget))
|
|
{
|
|
GtkBorder border;
|
|
|
|
gtk_style_context_get_border (context, state, &border);
|
|
|
|
gtk_render_focus (context, cr,
|
|
border_width + border.left,
|
|
border_width + border.top,
|
|
width - 2 * border_width - border.left - border.right,
|
|
height - 2 * border_width - border.top - border.bottom);
|
|
}
|
|
|
|
child = gtk_bin_get_child (GTK_BIN (widget));
|
|
if (child)
|
|
gtk_container_propagate_draw (GTK_CONTAINER (widget), child, cr);
|
|
|
|
out:
|
|
gtk_style_context_restore (context);
|
|
|
|
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);
|
|
|
|
object_class->set_property = gtk_model_button_set_property;
|
|
|
|
widget_class->get_preferred_width = gtk_model_button_get_preferred_width;
|
|
widget_class->get_preferred_width_for_height = gtk_model_button_get_preferred_width_for_height;
|
|
widget_class->get_preferred_height = gtk_model_button_get_preferred_height;
|
|
widget_class->get_preferred_height_for_width = gtk_model_button_get_preferred_height_for_width;
|
|
widget_class->get_preferred_height_and_baseline_for_width = gtk_model_button_get_preferred_height_and_baseline_for_width;
|
|
widget_class->size_allocate = gtk_model_button_size_allocate;
|
|
widget_class->draw = gtk_model_button_draw;
|
|
|
|
g_object_class_install_property (object_class, PROP_ACTION_ROLE,
|
|
g_param_spec_enum ("action-role", "", "",
|
|
GTK_TYPE_MENU_TRACKER_ITEM_ROLE,
|
|
GTK_MENU_TRACKER_ITEM_ROLE_NORMAL,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_ICON,
|
|
g_param_spec_object ("icon", "", "", G_TYPE_ICON,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_TEXT,
|
|
g_param_spec_string ("text", "", "", NULL,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_TOGGLED,
|
|
g_param_spec_boolean ("toggled", "", "", FALSE,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_ACCEL,
|
|
g_param_spec_string ("accel", "", "", NULL,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_HAS_SUBMENU,
|
|
g_param_spec_boolean ("has-submenu", "", "", FALSE,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_INVERTED,
|
|
g_param_spec_boolean ("inverted", "", "", FALSE,
|
|
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_CENTERED,
|
|
g_param_spec_boolean ("centered", "", "", FALSE,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (object_class, PROP_ICONIC,
|
|
g_param_spec_boolean ("iconic", "", "", TRUE,
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
gtk_widget_class_set_accessible_role (GTK_WIDGET_CLASS (class), ATK_ROLE_PUSH_BUTTON);
|
|
}
|
|
|
|
static void
|
|
gtk_model_button_init (GtkModelButton *button)
|
|
{
|
|
gtk_button_set_relief (GTK_BUTTON (button), GTK_RELIEF_NONE);
|
|
button->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
|
|
g_object_set (button->box,
|
|
"margin-start", 12,
|
|
"margin-end", 12,
|
|
"margin-top", 3,
|
|
"margin-bottom", 3,
|
|
NULL);
|
|
gtk_widget_set_halign (button->box, GTK_ALIGN_FILL);
|
|
gtk_widget_show (button->box);
|
|
button->image = gtk_image_new ();
|
|
button->label = gtk_label_new ("");
|
|
gtk_container_add (GTK_CONTAINER (button->box), button->image);
|
|
gtk_container_add (GTK_CONTAINER (button->box), button->label);
|
|
gtk_container_add (GTK_CONTAINER (button), button->box);
|
|
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (button)),
|
|
GTK_STYLE_CLASS_MENUITEM);
|
|
}
|
|
|
|
GtkWidget *
|
|
gtk_model_button_new (void)
|
|
{
|
|
return g_object_new (GTK_TYPE_MODEL_BUTTON, NULL);
|
|
}
|