gtk2/gtk/gtkcellrendererpixbuf.c
4 3ff4a2c081 Checked in initial draft of the new tree widget.
2000-10-04    <jrb@redhat.com>

	* gtk/gtk{tree,cell}?*.[ch]: Checked in initial draft of the new
	tree widget.
2000-10-05 01:04:57 +00:00

241 lines
7.2 KiB
C

/* gtkcellrendererpixbuf.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 "gtkcellrendererpixbuf.h"
#ifndef _
#define _(x) x
#endif
static void gtk_cell_renderer_pixbuf_get_param (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer);
static void gtk_cell_renderer_pixbuf_set_param (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer);
static void gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *celltext);
static void gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class);
static void gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
gint *width,
gint *height);
static void gtk_cell_renderer_pixbuf_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
guint flags);
enum {
PROP_ZERO,
PROP_PIXBUF
};
GtkType
gtk_cell_renderer_pixbuf_get_type (void)
{
static GtkType cell_pixbuf_type = 0;
if (!cell_pixbuf_type)
{
static const GTypeInfo cell_pixbuf_info =
{
sizeof (GtkCellRendererPixbufClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_cell_renderer_pixbuf_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkCellRendererPixbuf),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_cell_renderer_pixbuf_init,
};
cell_pixbuf_type = g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererPixbuf", &cell_pixbuf_info);
}
return cell_pixbuf_type;
}
static void
gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *cellpixbuf)
{
}
static void
gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
object_class->get_param = gtk_cell_renderer_pixbuf_get_param;
object_class->set_param = gtk_cell_renderer_pixbuf_set_param;
cell_class->get_size = gtk_cell_renderer_pixbuf_get_size;
cell_class->render = gtk_cell_renderer_pixbuf_render;
g_object_class_install_param (object_class,
PROP_PIXBUF,
g_param_spec_object ("pixbuf",
_("Pixbuf Object"),
_("The pixbuf to render."),
GDK_TYPE_PIXBUF,
G_PARAM_READABLE |
G_PARAM_WRITABLE));
}
static void
gtk_cell_renderer_pixbuf_get_param (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer)
{
GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
switch (param_id)
{
case PROP_PIXBUF:
g_value_init (value, G_TYPE_OBJECT);
g_value_set_object (value, G_OBJECT (cellpixbuf->pixbuf));
break;
default:
break;
}
}
static void
gtk_cell_renderer_pixbuf_set_param (GObject *object,
guint param_id,
GValue *value,
GParamSpec *pspec,
const gchar *trailer)
{
GdkPixbuf *pixbuf;
GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
switch (param_id)
{
case PROP_PIXBUF:
pixbuf = GDK_PIXBUF (g_value_get_object (value));
g_object_ref (G_OBJECT (pixbuf));
if (cellpixbuf->pixbuf)
g_object_unref (G_OBJECT (cellpixbuf->pixbuf));
cellpixbuf->pixbuf = pixbuf;
break;
default:
break;
}
}
GtkCellRenderer *
gtk_cell_renderer_pixbuf_new (void)
{
return GTK_CELL_RENDERER (gtk_type_new (gtk_cell_renderer_pixbuf_get_type ()));
}
static void
gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell,
GtkWidget *widget,
gint *width,
gint *height)
{
GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
if (width)
*width = (gint) GTK_CELL_RENDERER (cellpixbuf)->xpad * 2 +
(cellpixbuf->pixbuf ? gdk_pixbuf_get_width (cellpixbuf->pixbuf) : 0);
if (height)
*height = (gint) GTK_CELL_RENDERER (cellpixbuf)->ypad * 2 +
(cellpixbuf->pixbuf ? gdk_pixbuf_get_height (cellpixbuf->pixbuf) : 0);
}
static void
gtk_cell_renderer_pixbuf_render (GtkCellRenderer *cell,
GdkWindow *window,
GtkWidget *widget,
GdkRectangle *background_area,
GdkRectangle *cell_area,
GdkRectangle *expose_area,
guint flags)
{
GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
GdkPixbuf *pixbuf;
guchar *pixels;
gint rowstride;
gint real_xoffset;
gint real_yoffset;
GdkGC *bg_gc = NULL;
pixbuf = cellpixbuf->pixbuf;
if (!pixbuf)
return;
if ((flags & GTK_CELL_RENDERER_SELECTED) == GTK_CELL_RENDERER_SELECTED)
bg_gc = widget->style->bg_gc [GTK_STATE_SELECTED];
else
bg_gc = widget->style->base_gc [GTK_STATE_NORMAL];
gdk_gc_set_clip_rectangle (bg_gc, cell_area);
rowstride = gdk_pixbuf_get_rowstride (pixbuf);
pixels = gdk_pixbuf_get_pixels (pixbuf);
real_xoffset = GTK_CELL_RENDERER (cellpixbuf)->xalign * (cell_area->width - gdk_pixbuf_get_width (pixbuf) - (2 * GTK_CELL_RENDERER (cellpixbuf)->xpad));
real_xoffset = MAX (real_xoffset, 0) + GTK_CELL_RENDERER (cellpixbuf)->xpad;
real_yoffset = GTK_CELL_RENDERER (cellpixbuf)->yalign * (cell_area->height - gdk_pixbuf_get_height (pixbuf) - (2 * GTK_CELL_RENDERER (cellpixbuf)->ypad));
real_yoffset = MAX (real_yoffset, 0) + GTK_CELL_RENDERER (cellpixbuf)->ypad;
if (gdk_pixbuf_get_has_alpha (pixbuf))
gdk_draw_rgb_32_image (window,
bg_gc,
cell_area->x + real_xoffset,
cell_area->y + real_yoffset,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
GDK_RGB_DITHER_NORMAL,
pixels,
rowstride);
else
gdk_draw_rgb_image (window,
bg_gc,
cell_area->x + real_xoffset,
cell_area->y + real_yoffset,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
GDK_RGB_DITHER_NORMAL,
pixels,
rowstride);
gdk_gc_set_clip_rectangle (bg_gc, NULL);
}