gecko-dev/gfx/thebes/gfxGdkNativeRenderer.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Novell code.
*
* The Initial Developer of the Original Code is Novell.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* rocallahan@novell.com
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* ***** END LICENSE BLOCK ***** */
#ifndef GFXGDKNATIVERENDER_H_
#define GFXGDKNATIVERENDER_H_
#include <gdk/gdk.h>
#include "nsSize.h"
#ifdef MOZ_X11
#include "gfxXlibNativeRenderer.h"
#endif
class gfxASurface;
class gfxContext;
/**
* This class lets us take code that draws into an GDK drawable and lets us
* use it to draw into any Thebes context. The user should subclass this class,
* override DrawWithGDK, and then call Draw(). The drawing will be subjected
* to all Thebes transformations, clipping etc.
*/
class THEBES_API gfxGdkNativeRenderer
#ifdef MOZ_X11
: private gfxXlibNativeRenderer
#endif
{
public:
/**
* Perform the native drawing.
* @param offsetX draw at this offset into the given drawable
* @param offsetY draw at this offset into the given drawable
* @param clipRects an array of rects; clip to the union
* @param numClipRects the number of rects in the array, or zero if
* no clipping is required
*/
virtual nsresult DrawWithGDK(GdkDrawable * drawable, gint offsetX,
gint offsetY, GdkRectangle * clipRects, PRUint32 numClipRects) = 0;
enum {
// If set, then Draw() is opaque, i.e., every pixel in the intersection
// of the clipRect and (offset.x,offset.y,bounds.width,bounds.height)
// will be set and there is no dependence on what the existing pixels
// in the drawable are set to.
DRAW_IS_OPAQUE =
#ifdef MOZ_X11
gfxXlibNativeRenderer::DRAW_IS_OPAQUE
#else
0x1
#endif
// If set, then numClipRects can be zero or one.
// If not set, then numClipRects will be zero.
, DRAW_SUPPORTS_CLIP_RECT =
#ifdef MOZ_X11
gfxXlibNativeRenderer::DRAW_SUPPORTS_CLIP_RECT
#else
0x2
#endif
};
/**
* @param flags see above
* @param bounds Draw()'s drawing is guaranteed to be restricted to
* the rectangle (offset.x,offset.y,bounds.width,bounds.height)
* @param dpy a display to use for the drawing if ctx doesn't have one
*/
void Draw(gfxContext* ctx, nsIntSize size,
PRUint32 flags, GdkColormap* colormap);
private:
#ifdef MOZ_X11
// for gfxXlibNativeRenderer:
virtual nsresult DrawWithXlib(gfxXlibSurface* surface,
nsIntPoint offset,
nsIntRect* clipRects, PRUint32 numClipRects);
GdkColormap *mColormap;
#endif
};
#endif /*GFXGDKNATIVERENDER_H_*/