forked from AuroraMiddleware/gtk
244 lines
8.2 KiB
C
244 lines
8.2 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"
|
|
#include "gtkintl.h"
|
|
|
|
static void gtk_cell_renderer_pixbuf_get_property (GObject *object,
|
|
guint param_id,
|
|
GValue *value,
|
|
GParamSpec *pspec,
|
|
const gchar *trailer);
|
|
static void gtk_cell_renderer_pixbuf_set_property (GObject *object,
|
|
guint param_id,
|
|
const 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, 0);
|
|
}
|
|
|
|
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_property = gtk_cell_renderer_pixbuf_get_property;
|
|
object_class->set_property = gtk_cell_renderer_pixbuf_set_property;
|
|
|
|
cell_class->get_size = gtk_cell_renderer_pixbuf_get_size;
|
|
cell_class->render = gtk_cell_renderer_pixbuf_render;
|
|
|
|
g_object_class_install_property (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_property (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_set_object (value,
|
|
cellpixbuf->pixbuf ? G_OBJECT (cellpixbuf->pixbuf) : NULL);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
gtk_cell_renderer_pixbuf_set_property (GObject *object,
|
|
guint param_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec,
|
|
const gchar *trailer)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
|
|
|
|
switch (param_id)
|
|
{
|
|
case PROP_PIXBUF:
|
|
pixbuf = (GdkPixbuf*) g_value_get_object (value);
|
|
if (pixbuf)
|
|
g_object_ref (G_OBJECT (pixbuf));
|
|
if (cellpixbuf->pixbuf)
|
|
g_object_unref (G_OBJECT (cellpixbuf->pixbuf));
|
|
cellpixbuf->pixbuf = pixbuf;
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_cell_renderer_pixbuf_new:
|
|
*
|
|
* Creates a new #GtkCellRendererPixbuf. 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 "pixbuf" property on the cell renderer to a pixbuf value
|
|
* in the model, thus rendering a different image in each row of the
|
|
* #GtkTreeView.
|
|
*
|
|
* Return value: the new cell renderer
|
|
**/
|
|
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;
|
|
GdkRectangle pix_rect;
|
|
GdkRectangle draw_rect;
|
|
|
|
pixbuf = cellpixbuf->pixbuf;
|
|
|
|
if (!pixbuf)
|
|
return;
|
|
|
|
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;
|
|
|
|
pix_rect.x = cell_area->x + real_xoffset;
|
|
pix_rect.y = cell_area->y + real_yoffset;
|
|
pix_rect.width = gdk_pixbuf_get_width (pixbuf);
|
|
pix_rect.height = gdk_pixbuf_get_height (pixbuf);
|
|
|
|
if (gdk_rectangle_intersect (cell_area, &pix_rect, &draw_rect))
|
|
gdk_pixbuf_render_to_drawable_alpha (pixbuf,
|
|
window,
|
|
/* pixbuf 0, 0 is at pix_rect.x, pix_rect.y */
|
|
draw_rect.x - pix_rect.x,
|
|
draw_rect.y - pix_rect.y,
|
|
draw_rect.x,
|
|
draw_rect.y,
|
|
draw_rect.width,
|
|
draw_rect.height,
|
|
GDK_PIXBUF_ALPHA_FULL,
|
|
0,
|
|
GDK_RGB_DITHER_NORMAL,
|
|
0, 0);
|
|
}
|