gtk2/gtk/gtkcellrenderertoggle.c

322 lines
9.0 KiB
C
Raw Normal View History

/* 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>
#ifndef _
#define _(x) x
#endif
static void gtk_cell_renderer_toggle_get_param (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer);
static void gtk_cell_renderer_toggle_set_param (GObject *object,
guint param_id,
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_STATE,
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);
}
return cell_toggle_type;
}
static void
gtk_cell_renderer_toggle_init (GtkCellRendererToggle *celltoggle)
{
celltoggle->state = 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_param = gtk_cell_renderer_toggle_get_param;
object_class->set_param = gtk_cell_renderer_toggle_set_param;
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_param (object_class,
PROP_STATE,
g_param_spec_boolean ("state",
_("Toggle state"),
_("The toggle-state of the button."),
FALSE,
G_PARAM_READABLE |
G_PARAM_WRITABLE));
g_object_class_install_param (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_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gtk_object_class_add_signals (GTK_OBJECT_CLASS (object_class), toggle_cell_signals, LAST_SIGNAL);
}
static void
gtk_cell_renderer_toggle_get_param (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer)
{
GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);
switch (param_id)
{
case PROP_STATE:
g_value_init (value, G_TYPE_BOOLEAN);
g_value_set_boolean (value, celltoggle->state);
break;
case PROP_RADIO:
g_value_init (value, G_TYPE_BOOLEAN);
g_value_set_boolean (value, celltoggle->radio);
break;
default:
break;
}
}
static void
gtk_cell_renderer_toggle_set_param (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer)
{
GtkCellRendererToggle *celltoggle = GTK_CELL_RENDERER_TOGGLE (object);
switch (param_id)
{
case PROP_STATE:
celltoggle->state = g_value_get_boolean (value);
break;
case PROP_RADIO:
celltoggle->radio = g_value_get_boolean (value);
break;
default:
break;
}
}
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;
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;
gdk_gc_set_clip_rectangle (widget->style->black_gc, cell_area);
if (!celltoggle->radio)
{
gdk_draw_rectangle (window,
widget->style->black_gc,
FALSE,
cell_area->x + real_xoffset,
cell_area->y + real_yoffset,
width, height);
if (celltoggle->state)
{
gdk_draw_line (window,
widget->style->black_gc,
cell_area->x + real_xoffset,
cell_area->y + real_yoffset,
cell_area->x + real_xoffset + width,
cell_area->y + real_yoffset + height);
gdk_draw_line (window,
widget->style->black_gc,
cell_area->x + real_xoffset + width,
cell_area->y + real_yoffset,
cell_area->x + real_xoffset,
cell_area->y + real_yoffset + height);
}
}
else
{
gdk_draw_arc (window,
widget->style->black_gc,
FALSE,
cell_area->x + real_xoffset,
cell_area->y + real_yoffset,
width,
height,
0, 360*64);
if (celltoggle->state)
{
gdk_draw_arc (window,
widget->style->black_gc,
TRUE,
cell_area->x + real_xoffset + 2,
cell_area->y + real_yoffset + 2,
width - 4,
height - 4,
0, 360*64);
}
}
gdk_gc_set_clip_rectangle (widget->style->black_gc, NULL);
}
static gint
gtk_cell_renderer_toggle_event (GtkCellRenderer *cell,
GdkEvent *event,
GtkWidget *widget,
gchar *path,
GdkRectangle *background_area,
GdkRectangle *cell_area,
guint flags)
{
gtk_signal_emit (GTK_OBJECT (cell), toggle_cell_signals[TOGGLED], path);
return TRUE;
}
void
gtk_cell_renderer_toggle_set_radio (GtkCellRendererToggle *toggle,
gboolean radio)
{
g_return_if_fail (toggle != NULL);
g_return_if_fail (GTK_IS_CELL_RENDERER_TOGGLE (toggle));
toggle->radio = radio;
}