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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef _VCLCANVAS_CANVASBITMAPHELPER_HXX_
#define _VCLCANVAS_CANVASBITMAPHELPER_HXX_
#include <canvashelper.hxx>
#include <canvas/vclwrapper.hxx>
#include <vcl/bitmapex.hxx>
#include "bitmapbackbuffer.hxx"
#include "spritecanvas.hxx"
namespace vclcanvas
{
/** Helper class for basic canvasbitmap functionality. Extends
CanvasHelper with some CanvasBitmap specialities, such as alpha
support.
Note that a plain CanvasHelper, although it does support the
XBitmap interface, has no provision for alpha channel on VCL
(at least no efficient one. If the alpha VDev one day gets
part of SAL, we might change that).
*/
class CanvasBitmapHelper : public CanvasHelper
{
public:
CanvasBitmapHelper();
/** Set a new bitmap on this helper.
This method late-initializes the bitmap canvas helper,
providing it with the necessary device and output
objects. The internally stored bitmap representation is
updated from the given bitmap, including any size
changes. Note that the CanvasHelper does <em>not</em> take
ownership of the SpriteCanvas object, nor does it perform
any reference counting. Thus, to prevent reference counted
objects from deletion, the user of this class is
responsible for holding ref-counted references to those
objects!
@param rBitmap
Content of this bitmap is used as our new content (our
internal size is adapted to the size of the bitmap given)
@param rDevice
Reference device for this canvas bitmap
@param rOutDevProvider
Reference output device. Used to create matching bitmap.
*/
void init( const BitmapEx& rBitmap,
::com::sun::star::rendering::XGraphicDevice& rDevice,
const OutDevProviderSharedPtr& rOutDevProvider );
// Overridden CanvasHelper functionality
// =====================================
void disposing();
void clear();
::com::sun::star::geometry::IntegerSize2D getSize();
::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmapCanvas > queryBitmapCanvas();
::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap >
getScaledBitmap( const ::com::sun::star::geometry::RealSize2D& newSize,
sal_Bool beFast );
::com::sun::star::uno::Sequence< sal_Int8 >
getData( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
const ::com::sun::star::geometry::IntegerRectangle2D& rect );
void setData( const ::com::sun::star::uno::Sequence< sal_Int8 >& data,
const ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
const ::com::sun::star::geometry::IntegerRectangle2D& rect );
void setPixel( const ::com::sun::star::uno::Sequence< sal_Int8 >& color,
const ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
const ::com::sun::star::geometry::IntegerPoint2D& pos );
::com::sun::star::uno::Sequence< sal_Int8 >
getPixel( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
const ::com::sun::star::geometry::IntegerPoint2D& pos );
::com::sun::star::rendering::IntegerBitmapLayout getMemoryLayout();
/// @internal
BitmapEx getBitmap() const;
private:
void setBitmap( const BitmapEx& rBitmap );
BitmapBackBufferSharedPtr mpBackBuffer;
OutDevProviderSharedPtr mpOutDevReference;
};
}
#endif /* _VCLCANVAS_CANVASBITMAPHELPER_HXX_ */
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