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