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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gdkdrawable.h"
#include "gdkcairo.h"
#include "gdkinternals.h"
#include "gdkwindow.h"
#include "gdkscreen.h"
#include "gdkpixbuf.h"
#include <pango/pangocairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <math.h>
G_DEFINE_ABSTRACT_TYPE (GdkDrawable, gdk_drawable, G_TYPE_OBJECT)
static void
gdk_drawable_class_init (GdkDrawableClass *klass)
{
}
static void
gdk_drawable_init (GdkDrawable *drawable)
{
}
/**
* gdk_drawable_get_clip_region:
* @drawable: a #GdkDrawable
*
* Computes the region of a drawable that potentially can be written
* to by drawing primitives. This region will not take into account
* the clip region for the GC, and may also not take into account
* other factors such as if the window is obscured by other windows,
* but no area outside of this region will be affected by drawing
* primitives.
*
* Returns: a #cairo_region_t. This must be freed with cairo_region_destroy()
* when you are done.
**/
cairo_region_t *
gdk_drawable_get_clip_region (GdkDrawable *drawable)
{
g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
return GDK_DRAWABLE_GET_CLASS (drawable)->get_clip_region (drawable);
}
/**
* gdk_drawable_get_visible_region:
* @drawable: a #GdkDrawable
*
* Computes the region of a drawable that is potentially visible.
* This does not necessarily take into account if the window is
* obscured by other windows, but no area outside of this region
* is visible.
*
* Returns: a #cairo_region_t. This must be freed with cairo_region_destroy()
* when you are done.
**/
cairo_region_t *
gdk_drawable_get_visible_region (GdkDrawable *drawable)
{
g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
return GDK_DRAWABLE_GET_CLASS (drawable)->get_visible_region (drawable);
}
/**
* _gdk_drawable_ref_cairo_surface:
* @drawable: a #GdkDrawable
*
* Obtains a #cairo_surface_t for the given drawable. If a
* #cairo_surface_t for the drawable already exists, it will be
* referenced, otherwise a new surface will be created.
*
* Return value: a newly referenced #cairo_surface_t that points
* to @drawable. Unref with cairo_surface_destroy()
**/
cairo_surface_t *
_gdk_drawable_ref_cairo_surface (GdkDrawable *drawable)
{
g_return_val_if_fail (GDK_IS_DRAWABLE (drawable), NULL);
return GDK_DRAWABLE_GET_CLASS (drawable)->ref_cairo_surface (drawable);
}
/************************************************************************/
cairo_surface_t *
_gdk_drawable_create_cairo_surface (GdkDrawable *drawable,
int width,
int height)
{
return GDK_DRAWABLE_GET_CLASS (drawable)->create_cairo_surface (drawable,
width, height);
}
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