156 lines
5.3 KiB
C++
156 lines
5.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_CANVAS_SURFACE_HXX
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#define INCLUDED_CANVAS_SURFACE_HXX
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#include <basegfx/point/b2ipoint.hxx>
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#include <basegfx/point/b2dpoint.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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#include <basegfx/range/b2drectangle.hxx>
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#include <basegfx/vector/b2isize.hxx>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <canvas/rendering/irendermodule.hxx>
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#include <canvas/rendering/icolorbuffer.hxx>
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#include <canvas/rendering/isurface.hxx>
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#include "surfacerect.hxx"
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#include "pagemanager.hxx"
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namespace canvas
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{
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//////////////////////////////////////////////////////////////////////////////////
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// Surface
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//////////////////////////////////////////////////////////////////////////////////
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/** surfaces denote occupied areas withing pages.
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pages encapsulate the hardware buffers that
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contain image data which can be used for texturing.
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surfaces are areas within those pages.
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*/
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class Surface
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{
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public:
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Surface( const PageManagerSharedPtr& rPageManager,
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const IColorBufferSharedPtr& rColorBuffer,
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const ::basegfx::B2IPoint& rPos,
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const ::basegfx::B2ISize& rSize );
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~Surface();
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void setColorBufferDirty();
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/** Render the surface content to screen.
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@param fAlpha
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Overall alpha for content
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@param rPos
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Output position
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@param rTransform
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Output transformation (does not affect output position)
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*/
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bool draw( double fAlpha,
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const ::basegfx::B2DPoint& rPos,
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const ::basegfx::B2DHomMatrix& rTransform );
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/** Render the surface content to screen.
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@param fAlpha
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Overall alpha for content
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@param rPos
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Output position
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@param rArea
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Subset of the surface to render. Coordinate system are
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surface area pixel, given area will be clipped to the
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surface bounds.
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@param rTransform
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Output transformation (does not affect output position)
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*/
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bool drawRectangularArea(
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double fAlpha,
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const ::basegfx::B2DPoint& rPos,
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const ::basegfx::B2DRange& rArea,
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const ::basegfx::B2DHomMatrix& rTransform );
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/** Render the surface content to screen.
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@param fAlpha
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Overall alpha for content
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@param rPos
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Output position
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@param rClipPoly
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Clip polygon for the surface. The clip polygon is also
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subject to the output transformation.
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@param rTransform
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Output transformation (does not affect output position)
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*/
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bool drawWithClip( double fAlpha,
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const ::basegfx::B2DPoint& rPos,
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const ::basegfx::B2DPolygon& rClipPoly,
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const ::basegfx::B2DHomMatrix& rTransform );
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// private attributes
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private:
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IColorBufferSharedPtr mpColorBuffer;
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// invoking any of the above defined 'draw' methods
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// will forward primitive commands to the rendermodule.
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PageManagerSharedPtr mpPageManager;
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FragmentSharedPtr mpFragment;
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// the offset of this surface with regard to the source
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// image. if the source image had to be tiled into multiple
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// surfaces, this offset denotes the relative pixel distance
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// from the source image's upper, left corner
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::basegfx::B2IPoint maSourceOffset;
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// the size in pixels of this surface. please note that
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// this size is likely to be smaller than the size of
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// the colorbuffer we're associated with since we
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// maybe represent only a part of it.
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::basegfx::B2ISize maSize;
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bool mbIsDirty;
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// private methods
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private:
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bool refresh( canvas::IColorBuffer& rBuffer ) const;
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void prepareRendering();
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basegfx::B2DRectangle getUVCoords() const;
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basegfx::B2DRectangle getUVCoords( const ::basegfx::B2IPoint& rPos,
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const ::basegfx::B2ISize& rSize ) const;
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};
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typedef ::boost::shared_ptr< Surface > SurfaceSharedPtr;
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}
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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