/* gtkcellrenderertoggle.c
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <gtk/gtkcellrenderertoggle.h>
#include <gtk/gtksignal.h>
#include "gtkintl.h"
static void gtk_cell_renderer_toggle_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer);
static void gtk_cell_renderer_toggle_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec,
const gchar *trailer);
static void gtk_cell_renderer_toggle_init (GtkCellRendererToggle *celltext);
static void gtk_cell_renderer_toggle_class_init (GtkCellRendererToggleClass *class);
static void gtk_cell_renderer_toggle_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
gint *width,
gint *height);
static void gtk_cell_renderer_toggle_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
guint flags);
static gint gtk_cell_renderer_toggle_event (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
guint flags);
enum {
TOGGLED,
LAST_SIGNAL
};
enum {
PROP_ZERO,
PROP_ACTIVE,
PROP_RADIO
};
#define TOGGLE_WIDTH 12
static guint toggle_cell_signals[LAST_SIGNAL] = { 0 };
GtkType
gtk_cell_renderer_toggle_get_type (void)
{
static GtkType cell_toggle_type = 0;
if (!cell_toggle_type)
{
static const GTypeInfo cell_toggle_info =
{
sizeof (GtkCellRendererToggleClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_cell_renderer_toggle_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkCellRendererToggle),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_cell_renderer_toggle_init,
};
cell_toggle_type = g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererToggle", &cell_toggle_info, 0);
}
return cell_toggle_type;
}
static void
gtk_cell_renderer_toggle_init (GtkCellRendererToggle *celltoggle)
{
celltoggle->active = FALSE;
celltoggle->radio = FALSE;
GTK_CELL_RENDERER (celltoggle)->xpad = 2;
GTK_CELL_RENDERER (celltoggle)->ypad = 2;
}
static void
gtk_cell_renderer_toggle_class_init (GtkCellRendererToggleClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
object_class->get_property = gtk_cell_renderer_toggle_get_property;
object_class->set_property = gtk_cell_renderer_toggle_set_property;
cell_class->get_size = gtk_cell_renderer_toggle_get_size;
cell_class->render = gtk_cell_renderer_toggle_render;
cell_class->event = gtk_cell_renderer_toggle_event;
g_object_class_install_property (object_class,
PROP_ACTIVE,
g_param_spec_boolean ("active",
_("Toggle state"),
_("The toggle state of the button"),
FALSE,
G_PARAM_READABLE |
G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_RADIO,
g_param_spec_boolean ("radio",
_("Radio state"),
_("Draw the toggle button as a radio button"),
FALSE,
G_PARAM_READABLE |
G_PARAM_WRITABLE));
toggle_cell_signals[TOGGLED] =
gtk_signal_new ("toggled",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkCellRendererToggleClass, toggled),
gtk_marshal_VOID__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
}
static void
gtk_cell_renderer_toggle_get_property (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer)
{
GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);
switch (param_id)
{
case PROP_ACTIVE:
g_value_set_boolean (value, celltoggle->active);
break;
case PROP_RADIO:
g_value_set_boolean (value, celltoggle->radio);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
static void
gtk_cell_renderer_toggle_set_property (GObject *object,
guint param_id,
const GValue *value,
GParamSpec *pspec,
const gchar *trailer)
{
GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);
switch (param_id)
{
case PROP_ACTIVE:
celltoggle->active = g_value_get_boolean (value);
break;
case PROP_RADIO:
celltoggle->radio = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
break;
}
}
/**
* gtk_cell_renderer_toggle_new:
*
* Creates a new #GtkCellRendererToggle. Adjust rendering
* parameters using object properties. Object properties can be set
* globally (with g_object_set()). Also, with #GtkTreeViewColumn, you
* can bind a property to a value in a #GtkTreeModel. For example, you
* can bind the "active" property on the cell renderer to a boolean value
* in the model, thus causing the check button to reflect the state of
* the model.
*
* Return value: the new cell renderer
**/
GtkCellRenderer *
gtk_cell_renderer_toggle_new (void)
{
return GTK_CELL_RENDERER (gtk_type_new (gtk_cell_renderer_toggle_get_type ()));
}
static void
gtk_cell_renderer_toggle_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
gint *width,
gint *height)
{
if (width)
*width = (gint) cell->xpad * 2 + TOGGLE_WIDTH;
if (height)
*height = (gint) cell->ypad * 2 + TOGGLE_WIDTH;
}
static void
gtk_cell_renderer_toggle_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
guint flags)
{
GtkCellRendererToggle *celltoggle = (GtkCellRendererToggle *) cell;
gint width, height;
gint real_xoffset, real_yoffset;
GtkShadowType shadow;
GtkStateType state;
width = MIN (TOGGLE_WIDTH, cell_area->width - cell->xpad * 2);
height = MIN (TOGGLE_WIDTH, cell_area->height - cell->ypad * 2);
if (width <= 0 || height <= 0)
return;
real_xoffset = cell->xalign * (cell_area->width - width - (2 * cell->xpad));
real_xoffset = MAX (real_xoffset, 0) + cell->xpad;
real_yoffset = cell->yalign * (cell_area->height - height - (2 * cell->ypad));
real_yoffset = MAX (real_yoffset, 0) + cell->ypad;
shadow = celltoggle->active ? GTK_SHADOW_IN : GTK_SHADOW_OUT;
if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)
state = GTK_STATE_SELECTED;
else
state = GTK_STATE_NORMAL;
if (celltoggle->radio)
{
gtk_paint_option (widget->style,
window,
state, shadow,
cell_area, widget, "cellradio",
cell_area->x + real_xoffset,
cell_area->y + real_yoffset,
width, height);
}
else
{
gtk_paint_check (widget->style,
window,
state, shadow,
cell_area, widget, "cellcheck",
cell_area->x + real_xoffset,
cell_area->y + real_yoffset,
width, height);
}
}
static gint
gtk_cell_renderer_toggle_event (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
guint flags)
{
GtkCellRendererToggle *celltoggle;
gint retval = FALSE;
celltoggle = GTK_CELL_RENDERER_TOGGLE (cell);
switch (event->type)
{
case GDK_BUTTON_PRESS:
{
gtk_signal_emit (GTK_OBJECT (cell), toggle_cell_signals[TOGGLED], path);
retval = TRUE;
}
break;
default:
break;
}
return retval;
}
/**
* gtk_cell_renderer_toggle_set_radio:
* @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)
{
g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));
toggle->radio = radio;
}
/**
* gtk_cell_renderer_toggle_get_radio:
* @toggle: a #GtkCellRendererToggle
*
* Return value: %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->radio;
}