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Diffstat (limited to 'canvas/source/vcl/canvasbitmaphelper.hxx')
| -rw-r--r-- | canvas/source/vcl/canvasbitmaphelper.hxx | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/canvas/source/vcl/canvasbitmaphelper.hxx b/canvas/source/vcl/canvasbitmaphelper.hxx new file mode 100644 index 000000000000..196d53d7b58a --- /dev/null +++ b/canvas/source/vcl/canvasbitmaphelper.hxx @@ -0,0 +1,129 @@ +/************************************************************************* + * + * 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_ */ |