forked from AuroraMiddleware/gtk
634 lines
18 KiB
C
634 lines
18 KiB
C
/* gtkcellrenderertoggle.c
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* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library 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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#include "config.h"
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#include <stdlib.h>
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#include "gtkcellrenderertoggle.h"
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#include "gtkintl.h"
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#include "gtkmarshalers.h"
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#include "gtkprivate.h"
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#include "gtkstylecontextprivate.h"
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#include "gtktreeprivate.h"
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#include "a11y/gtkbooleancellaccessible.h"
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/**
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* SECTION:gtkcellrenderertoggle
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* @Short_description: Renders a toggle button in a cell
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* @Title: GtkCellRendererToggle
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*
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* #GtkCellRendererToggle renders a toggle button in a cell. The
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* button is drawn as a radio or a checkbutton, depending on the
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* #GtkCellRendererToggle:radio property.
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* When activated, it emits the #GtkCellRendererToggle::toggled signal.
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*/
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static void gtk_cell_renderer_toggle_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_cell_renderer_toggle_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_cell_renderer_toggle_get_size (GtkCellRenderer *cell,
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GtkWidget *widget,
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const GdkRectangle *cell_area,
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gint *x_offset,
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gint *y_offset,
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gint *width,
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gint *height);
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static void gtk_cell_renderer_toggle_render (GtkCellRenderer *cell,
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cairo_t *cr,
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GtkWidget *widget,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags);
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static gboolean gtk_cell_renderer_toggle_activate (GtkCellRenderer *cell,
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GdkEvent *event,
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GtkWidget *widget,
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const gchar *path,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags);
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enum {
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TOGGLED,
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LAST_SIGNAL
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};
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enum {
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PROP_0,
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PROP_ACTIVATABLE,
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PROP_ACTIVE,
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PROP_RADIO,
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PROP_INCONSISTENT,
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PROP_INDICATOR_SIZE
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};
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#define TOGGLE_WIDTH 16
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static guint toggle_cell_signals[LAST_SIGNAL] = { 0 };
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struct _GtkCellRendererTogglePrivate
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{
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gint indicator_size;
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guint active : 1;
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guint activatable : 1;
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guint inconsistent : 1;
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guint radio : 1;
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};
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G_DEFINE_TYPE_WITH_PRIVATE (GtkCellRendererToggle, gtk_cell_renderer_toggle, GTK_TYPE_CELL_RENDERER)
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static void
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gtk_cell_renderer_toggle_init (GtkCellRendererToggle *celltoggle)
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{
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GtkCellRendererTogglePrivate *priv;
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celltoggle->priv = gtk_cell_renderer_toggle_get_instance_private (celltoggle);
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priv = celltoggle->priv;
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priv->activatable = TRUE;
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priv->active = FALSE;
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priv->radio = FALSE;
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g_object_set (celltoggle, "mode", GTK_CELL_RENDERER_MODE_ACTIVATABLE, NULL);
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gtk_cell_renderer_set_padding (GTK_CELL_RENDERER (celltoggle), 2, 2);
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priv->indicator_size = 0;
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priv->inconsistent = FALSE;
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}
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static void
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gtk_cell_renderer_toggle_class_init (GtkCellRendererToggleClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
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object_class->get_property = gtk_cell_renderer_toggle_get_property;
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object_class->set_property = gtk_cell_renderer_toggle_set_property;
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cell_class->get_size = gtk_cell_renderer_toggle_get_size;
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cell_class->render = gtk_cell_renderer_toggle_render;
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cell_class->activate = gtk_cell_renderer_toggle_activate;
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g_object_class_install_property (object_class,
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PROP_ACTIVE,
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g_param_spec_boolean ("active",
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P_("Toggle state"),
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P_("The toggle state of the button"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (object_class,
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PROP_INCONSISTENT,
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g_param_spec_boolean ("inconsistent",
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P_("Inconsistent state"),
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P_("The inconsistent state of the button"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (object_class,
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PROP_ACTIVATABLE,
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g_param_spec_boolean ("activatable",
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P_("Activatable"),
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P_("The toggle button can be activated"),
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TRUE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (object_class,
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PROP_RADIO,
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g_param_spec_boolean ("radio",
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P_("Radio state"),
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P_("Draw the toggle button as a radio button"),
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FALSE,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
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g_object_class_install_property (object_class,
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PROP_INDICATOR_SIZE,
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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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0,
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GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY|G_PARAM_DEPRECATED));
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/**
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* GtkCellRendererToggle::toggled:
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* @cell_renderer: the object which received the signal
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* @path: string representation of #GtkTreePath describing the
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* event location
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*
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* The ::toggled signal is emitted when the cell is toggled.
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*
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* It is the responsibility of the application to update the model
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* with the correct value to store at @path. Often this is simply the
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* opposite of the value currently stored at @path.
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**/
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toggle_cell_signals[TOGGLED] =
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g_signal_new (I_("toggled"),
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GtkCellRendererToggleClass, toggled),
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NULL, NULL,
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NULL,
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G_TYPE_NONE, 1,
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G_TYPE_STRING);
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gtk_cell_renderer_class_set_accessible_type (cell_class, GTK_TYPE_BOOLEAN_CELL_ACCESSIBLE);
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}
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static void
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gtk_cell_renderer_toggle_get_property (GObject *object,
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guint param_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);
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GtkCellRendererTogglePrivate *priv = celltoggle->priv;
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switch (param_id)
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{
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case PROP_ACTIVE:
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g_value_set_boolean (value, priv->active);
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break;
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case PROP_INCONSISTENT:
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g_value_set_boolean (value, priv->inconsistent);
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break;
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case PROP_ACTIVATABLE:
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g_value_set_boolean (value, priv->activatable);
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break;
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case PROP_RADIO:
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g_value_set_boolean (value, priv->radio);
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break;
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case PROP_INDICATOR_SIZE:
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g_value_set_int (value, priv->indicator_size);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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static void
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gtk_cell_renderer_toggle_set_property (GObject *object,
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guint param_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);
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GtkCellRendererTogglePrivate *priv = celltoggle->priv;
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switch (param_id)
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{
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case PROP_ACTIVE:
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if (priv->active != g_value_get_boolean (value))
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{
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priv->active = g_value_get_boolean (value);
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g_object_notify_by_pspec (object, pspec);
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}
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break;
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case PROP_INCONSISTENT:
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if (priv->inconsistent != g_value_get_boolean (value))
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{
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priv->inconsistent = g_value_get_boolean (value);
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g_object_notify_by_pspec (object, pspec);
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}
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break;
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case PROP_ACTIVATABLE:
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if (priv->activatable != g_value_get_boolean (value))
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{
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priv->activatable = g_value_get_boolean (value);
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g_object_notify_by_pspec (object, pspec);
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}
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break;
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case PROP_RADIO:
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if (priv->radio != g_value_get_boolean (value))
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{
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priv->radio = g_value_get_boolean (value);
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g_object_notify_by_pspec (object, pspec);
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}
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break;
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case PROP_INDICATOR_SIZE:
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if (priv->indicator_size != g_value_get_int (value))
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{
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priv->indicator_size = g_value_get_int (value);
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g_object_notify_by_pspec (object, pspec);
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}
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
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break;
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}
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}
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/**
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* gtk_cell_renderer_toggle_new:
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*
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* Creates a new #GtkCellRendererToggle. Adjust rendering
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* parameters using object properties. Object properties can be set
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* globally (with g_object_set()). Also, with #GtkTreeViewColumn, you
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* can bind a property to a value in a #GtkTreeModel. For example, you
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* can bind the “active” property on the cell renderer to a boolean value
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* in the model, thus causing the check button to reflect the state of
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* the model.
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*
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* Returns: the new cell renderer
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**/
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GtkCellRenderer *
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gtk_cell_renderer_toggle_new (void)
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{
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return g_object_new (GTK_TYPE_CELL_RENDERER_TOGGLE, NULL);
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}
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static GtkStyleContext *
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gtk_cell_renderer_toggle_save_context (GtkCellRenderer *cell,
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GtkWidget *widget)
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{
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GtkCellRendererTogglePrivate *priv = GTK_CELL_RENDERER_TOGGLE (cell)->priv;
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GtkStyleContext *context;
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context = gtk_widget_get_style_context (widget);
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if (priv->radio)
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gtk_style_context_save_named (context, "radio");
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else
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gtk_style_context_save_named (context, "check");
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return context;
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}
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static void
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calc_indicator_size (GtkStyleContext *context,
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gint indicator_size,
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gint *width,
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gint *height)
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{
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if (indicator_size != 0)
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{
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*width = *height = indicator_size;
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return;
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}
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gtk_style_context_get (context,
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"min-width", width,
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"min-height", height,
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NULL);
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if (*width == 0)
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*width = TOGGLE_WIDTH;
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if (*height == 0)
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*height = TOGGLE_WIDTH;
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}
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static void
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gtk_cell_renderer_toggle_get_size (GtkCellRenderer *cell,
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GtkWidget *widget,
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const GdkRectangle *cell_area,
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gint *x_offset,
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gint *y_offset,
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gint *width,
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gint *height)
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{
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GtkCellRendererTogglePrivate *priv;
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gint calc_width;
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gint calc_height;
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gint xpad, ypad;
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GtkStyleContext *context;
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GtkBorder border, padding;
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priv = GTK_CELL_RENDERER_TOGGLE (cell)->priv;
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gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
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context = gtk_cell_renderer_toggle_save_context (cell, widget);
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gtk_style_context_get_padding (context, &padding);
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gtk_style_context_get_border (context, &border);
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calc_indicator_size (context, priv->indicator_size, &calc_width, &calc_height);
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calc_width += xpad * 2 + padding.left + padding.right + border.left + border.right;
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calc_height += ypad * 2 + padding.top + padding.bottom + border.top + border.bottom;
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gtk_style_context_restore (context);
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if (width)
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*width = calc_width;
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if (height)
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*height = calc_height;
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if (cell_area)
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{
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gfloat xalign, yalign;
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gtk_cell_renderer_get_alignment (cell, &xalign, &yalign);
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if (x_offset)
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{
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*x_offset = ((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
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(1.0 - xalign) : xalign) * (cell_area->width - calc_width);
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*x_offset = MAX (*x_offset, 0);
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}
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if (y_offset)
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{
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*y_offset = yalign * (cell_area->height - calc_height);
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*y_offset = MAX (*y_offset, 0);
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}
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}
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else
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{
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if (x_offset) *x_offset = 0;
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if (y_offset) *y_offset = 0;
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}
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}
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static void
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gtk_cell_renderer_toggle_render (GtkCellRenderer *cell,
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cairo_t *cr,
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GtkWidget *widget,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags)
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{
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GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (cell);
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GtkCellRendererTogglePrivate *priv = celltoggle->priv;
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GtkStyleContext *context;
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gint width, height;
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gint x_offset, y_offset;
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gint xpad, ypad;
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GtkStateFlags state;
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GtkBorder padding, border;
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context = gtk_widget_get_style_context (widget);
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gtk_cell_renderer_toggle_get_size (cell, widget, cell_area,
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&x_offset, &y_offset,
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&width, &height);
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gtk_cell_renderer_get_padding (cell, &xpad, &ypad);
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width -= xpad * 2;
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height -= ypad * 2;
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if (width <= 0 || height <= 0)
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return;
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state = gtk_cell_renderer_get_state (cell, widget, flags);
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if (!priv->activatable)
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state |= GTK_STATE_FLAG_INSENSITIVE;
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state &= ~(GTK_STATE_FLAG_INCONSISTENT | GTK_STATE_FLAG_CHECKED);
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if (priv->inconsistent)
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state |= GTK_STATE_FLAG_INCONSISTENT;
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if (priv->active)
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state |= GTK_STATE_FLAG_CHECKED;
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cairo_save (cr);
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gdk_cairo_rectangle (cr, cell_area);
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cairo_clip (cr);
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context = gtk_cell_renderer_toggle_save_context (cell, widget);
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gtk_style_context_set_state (context, state);
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gtk_render_background (context, cr,
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cell_area->x + x_offset + xpad,
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cell_area->y + y_offset + ypad,
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width, height);
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gtk_render_frame (context, cr,
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cell_area->x + x_offset + xpad,
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cell_area->y + y_offset + ypad,
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width, height);
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gtk_style_context_get_padding (context, &padding);
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gtk_style_context_get_border (context, &border);
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if (priv->radio)
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{
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gtk_render_option (context, cr,
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cell_area->x + x_offset + xpad + padding.left + border.left,
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cell_area->y + y_offset + ypad + padding.top + border.top,
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width - padding.left - padding.right - border.left - border.right,
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height - padding.top - padding.bottom - border.top - border.bottom);
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}
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else
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{
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gtk_render_check (context, cr,
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cell_area->x + x_offset + xpad + padding.left + border.left,
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cell_area->y + y_offset + ypad + padding.top + border.top,
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width - padding.left - padding.right - border.left - border.right,
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height - padding.top - padding.bottom - border.top - border.bottom);
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}
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gtk_style_context_restore (context);
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cairo_restore (cr);
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}
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static gint
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gtk_cell_renderer_toggle_activate (GtkCellRenderer *cell,
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GdkEvent *event,
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GtkWidget *widget,
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const gchar *path,
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const GdkRectangle *background_area,
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const GdkRectangle *cell_area,
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GtkCellRendererState flags)
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{
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GtkCellRendererTogglePrivate *priv;
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GtkCellRendererToggle *celltoggle;
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celltoggle = GTK_CELL_RENDERER_TOGGLE (cell);
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priv = celltoggle->priv;
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if (priv->activatable)
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{
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g_signal_emit (cell, toggle_cell_signals[TOGGLED], 0, path);
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return TRUE;
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}
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return FALSE;
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}
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/**
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* gtk_cell_renderer_toggle_set_radio:
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* @toggle: a #GtkCellRendererToggle
|
||
* @radio: %TRUE to make the toggle look like a radio button
|
||
*
|
||
* If @radio is %TRUE, the cell renderer renders a radio toggle
|
||
* (i.e. a toggle in a group of mutually-exclusive toggles).
|
||
* If %FALSE, it renders a check toggle (a standalone boolean option).
|
||
* This can be set globally for the cell renderer, or changed just
|
||
* before rendering each cell in the model (for #GtkTreeView, you set
|
||
* up a per-row setting using #GtkTreeViewColumn to associate model
|
||
* columns with cell renderer properties).
|
||
**/
|
||
void
|
||
gtk_cell_renderer_toggle_set_radio (GtkCellRendererToggle *toggle,
|
||
gboolean radio)
|
||
{
|
||
GtkCellRendererTogglePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));
|
||
|
||
priv = toggle->priv;
|
||
|
||
priv->radio = radio;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_renderer_toggle_get_radio:
|
||
* @toggle: a #GtkCellRendererToggle
|
||
*
|
||
* Returns whether we’re rendering radio toggles rather than checkboxes.
|
||
*
|
||
* Returns: %TRUE if we’re rendering radio toggles rather than checkboxes
|
||
**/
|
||
gboolean
|
||
gtk_cell_renderer_toggle_get_radio (GtkCellRendererToggle *toggle)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle), FALSE);
|
||
|
||
return toggle->priv->radio;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_renderer_toggle_get_active:
|
||
* @toggle: a #GtkCellRendererToggle
|
||
*
|
||
* Returns whether the cell renderer is active. See
|
||
* gtk_cell_renderer_toggle_set_active().
|
||
*
|
||
* Returns: %TRUE if the cell renderer is active.
|
||
**/
|
||
gboolean
|
||
gtk_cell_renderer_toggle_get_active (GtkCellRendererToggle *toggle)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle), FALSE);
|
||
|
||
return toggle->priv->active;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_renderer_toggle_set_active:
|
||
* @toggle: a #GtkCellRendererToggle.
|
||
* @setting: the value to set.
|
||
*
|
||
* Activates or deactivates a cell renderer.
|
||
**/
|
||
void
|
||
gtk_cell_renderer_toggle_set_active (GtkCellRendererToggle *toggle,
|
||
gboolean setting)
|
||
{
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));
|
||
|
||
g_object_set (toggle, "active", setting ? TRUE : FALSE, NULL);
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_renderer_toggle_get_activatable:
|
||
* @toggle: a #GtkCellRendererToggle
|
||
*
|
||
* Returns whether the cell renderer is activatable. See
|
||
* gtk_cell_renderer_toggle_set_activatable().
|
||
*
|
||
* Returns: %TRUE if the cell renderer is activatable.
|
||
*
|
||
* Since: 2.18
|
||
**/
|
||
gboolean
|
||
gtk_cell_renderer_toggle_get_activatable (GtkCellRendererToggle *toggle)
|
||
{
|
||
g_return_val_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle), FALSE);
|
||
|
||
return toggle->priv->activatable;
|
||
}
|
||
|
||
/**
|
||
* gtk_cell_renderer_toggle_set_activatable:
|
||
* @toggle: a #GtkCellRendererToggle.
|
||
* @setting: the value to set.
|
||
*
|
||
* Makes the cell renderer activatable.
|
||
*
|
||
* Since: 2.18
|
||
**/
|
||
void
|
||
gtk_cell_renderer_toggle_set_activatable (GtkCellRendererToggle *toggle,
|
||
gboolean setting)
|
||
{
|
||
GtkCellRendererTogglePrivate *priv;
|
||
|
||
g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));
|
||
|
||
priv = toggle->priv;
|
||
|
||
if (priv->activatable != setting)
|
||
{
|
||
priv->activatable = setting ? TRUE : FALSE;
|
||
g_object_notify (G_OBJECT (toggle), "activatable");
|
||
}
|
||
}
|