forked from AuroraMiddleware/gtk
613 lines
21 KiB
C
613 lines
21 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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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 License, 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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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtkcheckbutton.h"
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#include "gtkbuttonprivate.h"
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#include "gtklabel.h"
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#include "gtkintl.h"
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#include "gtkprivate.h"
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#include "gtkwidgetprivate.h"
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/**
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* SECTION:gtkcheckbutton
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* @Short_description: Create widgets with a discrete toggle button
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* @Title: GtkCheckButton
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* @See_also: #GtkCheckMenuItem, #GtkButton, #GtkToggleButton, #GtkRadioButton
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*
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* A #GtkCheckButton places a discrete #GtkToggleButton next to a widget,
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* (usually a #GtkLabel). See the section on #GtkToggleButton widgets for
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* more information about toggle/check buttons.
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*
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* The important signal ( #GtkToggleButton::toggled ) is also inherited from
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* #GtkToggleButton.
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*/
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#define INDICATOR_SIZE 16
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#define INDICATOR_SPACING 2
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static void gtk_check_button_get_preferred_width (GtkWidget *widget,
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gint *minimum,
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gint *natural);
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static void gtk_check_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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static void gtk_check_button_get_preferred_height (GtkWidget *widget,
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gint *minimum,
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gint *natural);
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static void gtk_check_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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static void gtk_check_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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static void gtk_check_button_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation);
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static gboolean gtk_check_button_draw (GtkWidget *widget,
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cairo_t *cr);
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static void gtk_check_button_paint (GtkWidget *widget,
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cairo_t *cr);
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static void gtk_check_button_draw_indicator (GtkCheckButton *check_button,
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cairo_t *cr);
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static void gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
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cairo_t *cr);
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G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)
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static void
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gtk_check_button_class_init (GtkCheckButtonClass *class)
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{
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GtkWidgetClass *widget_class;
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widget_class = (GtkWidgetClass*) class;
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widget_class->get_preferred_width = gtk_check_button_get_preferred_width;
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widget_class->get_preferred_width_for_height = gtk_check_button_get_preferred_width_for_height;
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widget_class->get_preferred_height = gtk_check_button_get_preferred_height;
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widget_class->get_preferred_height_for_width = gtk_check_button_get_preferred_height_for_width;
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widget_class->get_preferred_height_and_baseline_for_width = gtk_check_button_get_preferred_height_and_baseline_for_width;
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widget_class->size_allocate = gtk_check_button_size_allocate;
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widget_class->draw = gtk_check_button_draw;
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class->draw_indicator = gtk_real_check_button_draw_indicator;
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gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_CHECK_BOX);
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("indicator-size",
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P_("Indicator Size"),
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P_("Size of check or radio indicator"),
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0,
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G_MAXINT,
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INDICATOR_SIZE,
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GTK_PARAM_READABLE));
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gtk_widget_class_install_style_property (widget_class,
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g_param_spec_int ("indicator-spacing",
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P_("Indicator Spacing"),
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P_("Spacing around check or radio indicator"),
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0,
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G_MAXINT,
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INDICATOR_SPACING,
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GTK_PARAM_READABLE));
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}
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static void
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draw_indicator_changed (GObject *object,
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GParamSpec *pspec,
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gpointer user_data)
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{
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GtkButton *button = GTK_BUTTON (object);
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if (gtk_toggle_button_get_mode (GTK_TOGGLE_BUTTON (button)))
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gtk_button_set_alignment (button, 0.0, 0.5);
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else
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gtk_button_set_alignment (button, 0.5, 0.5);
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}
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static void
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gtk_check_button_init (GtkCheckButton *check_button)
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{
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gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
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g_signal_connect (check_button, "notify::draw-indicator", G_CALLBACK (draw_indicator_changed), NULL);
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gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (check_button), TRUE);
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}
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/**
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* gtk_check_button_new:
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*
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* Creates a new #GtkCheckButton.
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*
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* Returns: a #GtkWidget.
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*/
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GtkWidget*
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gtk_check_button_new (void)
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{
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return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
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}
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/**
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* gtk_check_button_new_with_label:
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* @label: the text for the check button.
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*
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* Creates a new #GtkCheckButton with a #GtkLabel to the right of it.
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*
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* Returns: a #GtkWidget.
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*/
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GtkWidget*
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gtk_check_button_new_with_label (const gchar *label)
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{
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return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
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}
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/**
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* gtk_check_button_new_with_mnemonic:
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* @label: The text of the button, with an underscore in front of the
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* mnemonic character
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*
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* Creates a new #GtkCheckButton containing a label. The label
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* will be created using gtk_label_new_with_mnemonic(), so underscores
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* in @label indicate the mnemonic for the check button.
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*
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* Returns: a new #GtkCheckButton
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*/
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GtkWidget*
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gtk_check_button_new_with_mnemonic (const gchar *label)
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{
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return g_object_new (GTK_TYPE_CHECK_BUTTON,
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"label", label,
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"use-underline", TRUE,
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NULL);
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}
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/* This should only be called when toggle_button->draw_indicator
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* is true.
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*/
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static void
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gtk_check_button_paint (GtkWidget *widget,
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cairo_t *cr)
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{
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GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
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gtk_check_button_draw_indicator (check_button, cr);
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if (gtk_widget_has_visible_focus (widget))
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{
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GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
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GtkStyleContext *context;
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GtkAllocation allocation;
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gint border_width;
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gint focus_width;
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border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
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gtk_widget_style_get (widget,
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"focus-line-width", &focus_width,
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NULL);
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gtk_widget_get_allocation (widget, &allocation);
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context = gtk_widget_get_style_context (widget);
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if (child && gtk_widget_get_visible (child))
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{
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GtkAllocation child_allocation;
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gtk_widget_get_allocation (child, &child_allocation);
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gtk_render_focus (context, cr,
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child_allocation.x - allocation.x - focus_width,
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child_allocation.y - allocation.y - focus_width,
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child_allocation.width + 2 * focus_width,
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child_allocation.height + 2 * focus_width);
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}
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else
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gtk_render_focus (context, cr,
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border_width, border_width,
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allocation.width - 2 * border_width,
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allocation.height - 2 * border_width);
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}
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}
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void
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_gtk_check_button_get_props (GtkCheckButton *check_button,
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gint *indicator_size,
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gint *indicator_spacing)
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{
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GtkWidget *widget = GTK_WIDGET (check_button);
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if (indicator_size)
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gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);
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if (indicator_spacing)
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gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
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}
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static void
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get_padding_and_border (GtkWidget *widget,
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GtkBorder *border)
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{
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GtkStyleContext *context;
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GtkStateFlags state;
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GtkBorder tmp;
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context = gtk_widget_get_style_context (widget);
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state = gtk_widget_get_state_flags (widget);
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gtk_style_context_get_padding (context, state, border);
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gtk_style_context_get_border (context, state, &tmp);
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border->top += tmp.top;
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border->right += tmp.right;
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border->bottom += tmp.bottom;
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border->left += tmp.left;
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}
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static void
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gtk_check_button_get_full_border (GtkCheckButton *check_button,
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GtkBorder *border,
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gint *indicator)
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{
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int focus_width, indicator_size, indicator_spacing, indicator_extra, border_width;
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GtkWidget *child;
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get_padding_and_border (GTK_WIDGET (check_button), border);
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border_width = gtk_container_get_border_width (GTK_CONTAINER (check_button));
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gtk_widget_style_get (GTK_WIDGET (check_button),
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"focus-line-width", &focus_width,
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"indicator-size", &indicator_size,
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"indicator-spacing", &indicator_spacing,
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NULL);
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child = gtk_bin_get_child (GTK_BIN (check_button));
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border->left += border_width + focus_width;
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border->right += border_width + focus_width;
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border->top += border_width + focus_width;
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border->bottom += border_width + focus_width;
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indicator_extra = indicator_size + 2 * indicator_spacing;
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if (child && gtk_widget_get_visible (child))
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indicator_extra += indicator_spacing;
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if (gtk_widget_get_direction (GTK_WIDGET (check_button)) == GTK_TEXT_DIR_RTL)
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border->right += indicator_extra;
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else
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border->left += indicator_extra;
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if (indicator)
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*indicator = indicator_size + 2 * indicator_spacing;
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}
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static void
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gtk_check_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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GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
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if (gtk_toggle_button_get_mode (toggle_button))
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{
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GtkWidget *child;
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GtkBorder border;
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gtk_check_button_get_full_border (GTK_CHECK_BUTTON (widget), &border, NULL);
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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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}
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else
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GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_width (widget, minimum, natural);
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}
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static void
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gtk_check_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_check_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_check_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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GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
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if (gtk_toggle_button_get_mode (toggle_button))
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{
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GtkWidget *child;
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GtkBorder border;
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gint indicator;
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gtk_check_button_get_full_border (GTK_CHECK_BUTTON (widget), &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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width -= border.left + border.right;
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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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*minimum = MAX (indicator, child_min);
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*natural = MAX (indicator, child_nat);
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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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*minimum = indicator;
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*natural = indicator;
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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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else
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GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_height_and_baseline_for_width (widget, width,
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minimum, natural,
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minimum_baseline, natural_baseline);
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}
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static void
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gtk_check_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_check_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_check_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_check_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 void
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gtk_check_button_size_allocate (GtkWidget *widget,
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GtkAllocation *allocation)
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{
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PangoContext *pango_context;
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PangoFontMetrics *metrics;
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GtkCheckButton *check_button;
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GtkToggleButton *toggle_button;
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GtkButton *button;
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GtkAllocation child_allocation;
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gint baseline;
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button = GTK_BUTTON (widget);
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check_button = GTK_CHECK_BUTTON (widget);
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toggle_button = GTK_TOGGLE_BUTTON (widget);
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if (gtk_toggle_button_get_mode (toggle_button))
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{
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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 (button),
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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 (button));
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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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gtk_check_button_get_full_border (check_button, &border, NULL);
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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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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));
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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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else
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GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
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}
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static gint
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gtk_check_button_draw (GtkWidget *widget,
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cairo_t *cr)
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{
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GtkToggleButton *toggle_button;
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GtkBin *bin;
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GtkWidget *child;
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toggle_button = GTK_TOGGLE_BUTTON (widget);
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bin = GTK_BIN (widget);
|
|
|
|
if (gtk_toggle_button_get_mode (toggle_button))
|
|
{
|
|
gtk_check_button_paint (widget, cr);
|
|
|
|
child = gtk_bin_get_child (bin);
|
|
if (child)
|
|
gtk_container_propagate_draw (GTK_CONTAINER (widget),
|
|
child,
|
|
cr);
|
|
}
|
|
else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw)
|
|
GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw (widget, cr);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_check_button_draw_indicator (GtkCheckButton *check_button,
|
|
cairo_t *cr)
|
|
{
|
|
GtkCheckButtonClass *class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
|
|
|
|
if (class->draw_indicator)
|
|
class->draw_indicator (check_button, cr);
|
|
}
|
|
|
|
static void
|
|
gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
|
|
cairo_t *cr)
|
|
{
|
|
GtkWidget *widget;
|
|
GtkWidget *child;
|
|
GtkButton *button;
|
|
GtkToggleButton *toggle_button;
|
|
GtkStateFlags state = 0;
|
|
gint x, y;
|
|
gint indicator_size;
|
|
gint indicator_spacing;
|
|
gint focus_width;
|
|
gint baseline;
|
|
guint border_width;
|
|
GtkAllocation allocation;
|
|
GtkStyleContext *context;
|
|
|
|
widget = GTK_WIDGET (check_button);
|
|
button = GTK_BUTTON (check_button);
|
|
toggle_button = GTK_TOGGLE_BUTTON (check_button);
|
|
|
|
gtk_widget_get_allocation (widget, &allocation);
|
|
baseline = gtk_widget_get_allocated_baseline (widget);
|
|
context = gtk_widget_get_style_context (widget);
|
|
state = gtk_widget_get_state_flags (widget);
|
|
|
|
gtk_widget_style_get (widget,
|
|
"focus-line-width", &focus_width,
|
|
NULL);
|
|
|
|
_gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
|
|
|
|
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
|
|
|
|
x = indicator_spacing + border_width;
|
|
if (baseline == -1)
|
|
y = (allocation.height - indicator_size) / 2;
|
|
else
|
|
y = CLAMP (baseline - indicator_size * button->priv->baseline_align,
|
|
0, allocation.height - indicator_size);
|
|
|
|
child = gtk_bin_get_child (GTK_BIN (check_button));
|
|
if (!(child && gtk_widget_get_visible (child)))
|
|
x += focus_width;
|
|
|
|
state &= ~(GTK_STATE_FLAG_INCONSISTENT |
|
|
GTK_STATE_FLAG_ACTIVE |
|
|
GTK_STATE_FLAG_SELECTED |
|
|
GTK_STATE_FLAG_PRELIGHT);
|
|
|
|
if (gtk_toggle_button_get_inconsistent (toggle_button))
|
|
state |= GTK_STATE_FLAG_INCONSISTENT;
|
|
else if (gtk_toggle_button_get_active (toggle_button) ||
|
|
(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 (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
|
|
x = allocation.width - (indicator_size + x);
|
|
|
|
gtk_style_context_save (context);
|
|
gtk_style_context_set_state (context, state);
|
|
|
|
if (state & GTK_STATE_FLAG_PRELIGHT)
|
|
gtk_render_background (context, cr,
|
|
border_width, border_width,
|
|
allocation.width - (2 * border_width),
|
|
allocation.height - (2 * border_width));
|
|
|
|
gtk_style_context_add_class (context, GTK_STYLE_CLASS_CHECK);
|
|
|
|
gtk_render_check (context, cr,
|
|
x, y, indicator_size, indicator_size);
|
|
|
|
gtk_style_context_restore (context);
|
|
}
|