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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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* 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).
*
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* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
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************************************************************************/
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <drawinglayer/attribute/fillgradientattribute.hxx>
//////////////////////////////////////////////////////////////////////////////
// predefines
namespace basegfx { class B2DPolygon; }
//////////////////////////////////////////////////////////////////////////////
// FillGradientPrimitive2D class
namespace drawinglayer
{
namespace primitive2d
{
/** FillGradientPrimitive2D class
This class defines a gradient filling for a rectangular area. The
Range is defined by the Transformation, the gradient by the FillGradientAttribute.
The decomposition will deliver the decomposed gradient, e.g. for an ellipse
gradient the various ellipses in various color steps will be created.
I have added functionality to create both versions of filled decompositions:
Those who overlap and non-overlapping ones. The overlapping version is the
default one since it works with and without AntiAliasing. The non-overlapping
version is used in the MetafilePrimitive2D decomposition when the old XOR
paint was recorded.
*/
class FillGradientPrimitive2D : public BufferedDecompositionPrimitive2D
{
private:
/// the geometric definition
basegfx::B2DRange maObjectRange;
/// the gradient definition
attribute::FillGradientAttribute maFillGradient;
/// local helpers
void generateMatricesAndColors(
std::vector< basegfx::B2DHomMatrix >& rMatrices,
std::vector< basegfx::BColor >& rColors) const;
Primitive2DSequence createOverlappingFill(
const std::vector< basegfx::B2DHomMatrix >& rMatrices,
const std::vector< basegfx::BColor >& rColors,
const basegfx::B2DPolygon& rUnitPolygon) const;
Primitive2DSequence createNonOverlappingFill(
const std::vector< basegfx::B2DHomMatrix >& rMatrices,
const std::vector< basegfx::BColor >& rColors,
const basegfx::B2DPolygon& rUnitPolygon) const;
protected:
/// local helper
Primitive2DSequence createFill(bool bOverlapping) const;
/// local decomposition.
virtual Primitive2DSequence create2DDecomposition(const geometry::ViewInformation2D& rViewInformation) const;
public:
/// constructor
FillGradientPrimitive2D(
const basegfx::B2DRange& rObjectRange,
const attribute::FillGradientAttribute& rFillGradient);
/// data read access
const basegfx::B2DRange& getObjectRange() const { return maObjectRange; }
const attribute::FillGradientAttribute& getFillGradient() const { return maFillGradient; }
/// compare operator
virtual bool operator==(const BasePrimitive2D& rPrimitive) const;
/// get range
virtual basegfx::B2DRange getB2DRange(const geometry::ViewInformation2D& rViewInformation) const;
/// provide unique ID
DeclPrimitrive2DIDBlock()
};
} // end of namespace primitive2d
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_FILLGRADIENTPRIMITIVE2D_HXX
//////////////////////////////////////////////////////////////////////////////
// eof
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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