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159 lines
4.3 KiB
159 lines
4.3 KiB
/*
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Copyright (C) 2001-2003 KSVG Team
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This file is part of the KDE project
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef SVGMaskElementImpl_H
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#define SVGMaskElementImpl_H
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#include <tqwmatrix.h>
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#include "SVGTestsImpl.h"
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#include "SVGBBoxTarget.h"
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#include "SVGElementImpl.h"
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#include "SVGStylableImpl.h"
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#include "SVGLangSpaceImpl.h"
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#include "SVGExternalResourcesRequiredImpl.h"
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#include "LRUCache.h"
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#include "ksvg_lookup.h"
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namespace KSVG
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{
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class SVGUnitConverter;
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class KSVGCanvas;
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class SVGShapeImpl;
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class SVGRectImpl;
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class SVGAnimatedLengthImpl;
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class SVGAnimatedEnumerationImpl;
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class SVGMaskElementImpl : public SVGElementImpl,
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public SVGTestsImpl,
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public SVGLangSpaceImpl,
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public SVGExternalResourcesRequiredImpl,
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public SVGStylableImpl,
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public SVGBBoxTarget
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{
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public:
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class Mask
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{
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public:
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Mask() : m_width(0), m_height(0) {}
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Mask(const TQByteArray& mask, const TQWMatrix& screenToMask, int width, int height);
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~Mask() {}
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bool isEmpty() const { return m_width == 0; }
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unsigned char value(int screenX, int screenY) const;
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TQByteArray rectangle(int screenX, int screenY, int width, int height);
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TQByteArray rectangle(const TQRect& rect);
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void setScreenToMask(const TQWMatrix& matrix) { m_screenToMask = matrix; }
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private:
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int m_width;
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int m_height;
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TQByteArray m_mask;
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TQWMatrix m_screenToMask;
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};
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SVGMaskElementImpl(DOM::ElementImpl *);
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virtual ~SVGMaskElementImpl();
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SVGAnimatedEnumerationImpl *maskUnits() const;
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SVGAnimatedEnumerationImpl *maskContentUnits() const;
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SVGAnimatedLengthImpl *x() const;
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SVGAnimatedLengthImpl *y() const;
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SVGAnimatedLengthImpl *width() const;
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SVGAnimatedLengthImpl *height() const;
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virtual SVGRectImpl *getBBox();
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virtual void setAttributes();
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SVGUnitConverter *converter() const { return m_converter; }
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Mask createMask(SVGShapeImpl *referencingElement);
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// Compute the mask on a given shape, taking into account all masks defined
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// on the shape's ancestors. This is a workaround for us not having a buffer
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// for container elements, so we can't mask containers directly.
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static TQByteArray maskRectangle(SVGShapeImpl *shape, const TQRect& screenRectangle);
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private:
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class CacheKey
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{
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public:
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CacheKey() : m_element(0), m_width(0), m_height(0) {}
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CacheKey(SVGElementImpl *element, int width, int height) : m_element(element), m_width(width), m_height(height) {}
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bool operator==(const CacheKey& other) const { return m_element == other.m_element && m_width == other.m_width && m_height == other.m_height; }
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private:
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SVGElementImpl *m_element;
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int m_width;
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int m_height;
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};
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Mask createMask(SVGShapeImpl *referencingElement, int imageWidth, int imageHeight);
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SVGAnimatedEnumerationImpl *m_maskUnits;
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SVGAnimatedEnumerationImpl *m_maskContentUnits;
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SVGAnimatedLengthImpl *m_x;
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SVGAnimatedLengthImpl *m_y;
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SVGAnimatedLengthImpl *m_width;
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SVGAnimatedLengthImpl *m_height;
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SVGUnitConverter *m_converter;
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KSVGCanvas *m_canvas;
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MinOneLRUCache<CacheKey, Mask> m_maskCache;
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public:
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KSVG_GET
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KSVG_PUT
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KSVG_BRIDGE
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enum
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{
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// Properties
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MaskUnits, MaskContentUnits, X, Y, Width, Height
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};
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KJS::Value getValueProperty(KJS::ExecState *exec, int token) const;
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void putValueProperty(KJS::ExecState *exec, int token, const KJS::Value &value, int attr);
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};
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KSVG_REGISTER_ELEMENT(SVGMaskElementImpl, "mask")
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inline unsigned char SVGMaskElementImpl::Mask::value(int screenX, int screenY) const
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{
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int x, y;
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m_screenToMask.map(screenX, screenY, &x, &y);
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if(x >= 0 && x < m_width && y >= 0 && y < m_height)
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return m_mask[x + y * m_width];
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else
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return 0;
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}
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}
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#endif
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// vim:ts=4:noet
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