int
clip_GTK_DRAGSETICONPIXMAP(ClipMachine * cm)
{
C_object *ccontext = _fetch_co_arg(cm);
C_object *ccolormap = _fetch_cobject(cm, _clip_spar(cm, 2));
C_object *cpixmap = _fetch_cobject(cm, _clip_spar(cm, 3));
C_object *cmask = _fetch_cobject(cm, _clip_spar(cm, 4));
gint hot_x = _clip_parni(cm, 5);
gint hot_y = _clip_parni(cm, 6);
if (!ccontext || ccontext->type != GDK_TYPE_DRAG_CONTEXT)
goto err;
CHECKCOBJ(ccolormap, GDK_IS_COLORMAP(ccolormap->object));
CHECKCOBJ(cpixmap, GDK_IS_PIXMAP(cpixmap->object));
CHECKCOBJ(cmask, GDK_IS_BITMAP(cmask));
CHECKARG(5, NUMERIC_t);
CHECKARG(6, NUMERIC_t);
gtk_drag_set_icon_pixmap((GdkDragContext*)ccontext->object,
GDK_COLORMAP(ccolormap->object),
GDK_PIXMAP(cpixmap->object),
GDK_BITMAP(cmask->object),
hot_x, hot_y );
return 0;
err:
return 1;
}
/**
* gdk_pixbuf_render_pixmap_and_mask_for_colormap:
* @pixbuf: A pixbuf.
* @colormap: A #GdkColormap
* @pixmap_return: Location to store a pointer to the created pixmap,
* or %NULL if the pixmap is not needed.
* @mask_return: Location to store a pointer to the created mask,
* or %NULL if the mask is not needed.
* @alpha_threshold: Threshold value for opacity values.
*
* Creates a pixmap and a mask bitmap which are returned in the @pixmap_return
* and @mask_return arguments, respectively, and renders a pixbuf and its
* corresponding tresholded alpha mask to them. This is merely a convenience
* function; applications that need to render pixbufs with dither offsets or to
* given drawables should use gdk_draw_pixbuf(), and gdk_pixbuf_render_threshold_alpha().
*
* The pixmap that is created uses the #GdkColormap specified by @colormap.
* This colormap must match the colormap of the window where the pixmap
* will eventually be used or an error will result.
*
* If the pixbuf does not have an alpha channel, then *@mask_return will be set
* to %NULL.
**/
void
gdk_pixbuf_render_pixmap_and_mask_for_colormap (GdkPixbuf *pixbuf,
GdkColormap *colormap,
GdkPixmap **pixmap_return,
GdkBitmap **mask_return,
int alpha_threshold)
{
GdkScreen *screen;
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
g_return_if_fail (GDK_IS_COLORMAP (colormap));
screen = gdk_colormap_get_screen (colormap);
if (pixmap_return)
{
GdkGC *gc;
*pixmap_return = gdk_pixmap_new (gdk_screen_get_root_window (screen),
gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf),
gdk_colormap_get_visual (colormap)->depth);
gdk_drawable_set_colormap (GDK_DRAWABLE (*pixmap_return), colormap);
gc = _gdk_drawable_get_scratch_gc (*pixmap_return, FALSE);
/* If the pixbuf has an alpha channel, using gdk_pixbuf_draw would give
* random pixel values in the area that are within the mask, but semi-
* transparent. So we treat the pixbuf like a pixbuf without alpha channel;
* see bug #487865.
*/
if (gdk_pixbuf_get_has_alpha (pixbuf))
gdk_draw_rgb_32_image (*pixmap_return, gc,
0, 0,
gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf),
GDK_RGB_DITHER_NORMAL,
gdk_pixbuf_get_pixels (pixbuf), gdk_pixbuf_get_rowstride (pixbuf));
else
gdk_draw_pixbuf (*pixmap_return, gc, pixbuf,
0, 0, 0, 0,
gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf),
GDK_RGB_DITHER_NORMAL,
0, 0);
}
if (mask_return)
{
if (gdk_pixbuf_get_has_alpha (pixbuf))
{
*mask_return = gdk_pixmap_new (gdk_screen_get_root_window (screen),
gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf), 1);
gdk_pixbuf_render_threshold_alpha (pixbuf, *mask_return,
0, 0, 0, 0,
gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf),
alpha_threshold);
}
else
*mask_return = NULL;
}
}
void gdk_screen_set_default_colormap (GdkScreen *screen, GdkColormap *colormap)
{
GdkColormap *old_colormap;
ENTER();
g_return_if_fail(GDK_IS_SCREEN(screen));
g_return_if_fail(GDK_IS_COLORMAP(colormap));
old_colormap = default_colormap;
default_colormap = g_object_ref(colormap);
if (old_colormap) {
g_object_unref(old_colormap);
}
LEAVE();
}
void
gdk_screen_set_default_colormap (GdkScreen *screen,
GdkColormap *colormap)
{
GdkColormap *old_colormap;
g_return_if_fail (screen == _gdk_screen);
g_return_if_fail (GDK_IS_COLORMAP (colormap));
old_colormap = default_colormap;
default_colormap = g_object_ref (colormap);
if (old_colormap)
g_object_unref (old_colormap);
}
GdkColor
query_color (GtkWidget * win, GdkColor c)
{
GdkColor real_color;
GdkColormap *cmap;
cmap = gtk_widget_get_colormap (GTK_WIDGET (win));
if (cmap && GDK_IS_COLORMAP (cmap))
{
gdk_colormap_query_color (cmap, c.pixel, &real_color);
return real_color;
}
else
{
return c;
}
}
int
clip_GTK_DRAGSOURCESETICON(ClipMachine * cm)
{
C_widget *cwid = _fetch_cw_arg(cm);
C_object *ccolormap = _fetch_cobject(cm, _clip_spar(cm, 2));
C_object *cpixmap = _fetch_cobject(cm, _clip_spar(cm, 3));
C_object *cmask = _fetch_cobject(cm, _clip_spar(cm, 4));
CHECKCWID(cwid, GTK_IS_WIDGET);
CHECKCOBJ(ccolormap, GDK_IS_COLORMAP(ccolormap->object));
CHECKCOBJ(cpixmap, GDK_IS_PIXMAP(cpixmap->object));
CHECKCOBJ(cmask, GDK_IS_BITMAP(cmask));
gtk_drag_source_set_icon(GTK_WIDGET(cwid->widget),
GDK_COLORMAP(ccolormap->object),
GDK_PIXMAP(cpixmap->object),
GDK_BITMAP(cmask->object));
return 0;
err:
return 1;
}
int
clip_GTK_DRAGSETDEFAULTICON(ClipMachine * cm)
{
C_object *ccolormap = _fetch_co_arg(cm);
C_object *cpixmap = _fetch_cobject(cm, _clip_spar(cm, 2));
C_object *cmask = _fetch_cobject(cm, _clip_spar(cm, 3));
gint hot_x = _clip_parni(cm, 4);
gint hot_y = _clip_parni(cm, 5);
CHECKCOBJ(ccolormap, GDK_IS_COLORMAP(ccolormap->object));
CHECKCOBJ(cpixmap, GDK_IS_PIXMAP(cpixmap->object));
CHECKCOBJ(cmask, GDK_IS_PIXMAP(cmask));
CHECKARG(5, NUMERIC_t);
CHECKARG(4, NUMERIC_t);
gtk_drag_set_default_icon(GDK_COLORMAP(ccolormap->object),
GDK_PIXMAP(cpixmap->object),
GDK_BITMAP(cmask->object),
hot_x, hot_y );
return 0;
err:
return 1;
}
