Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 158 insertions, 0 deletions

diff --git a/ksvg/impl/SVGMaskElementImpl.h b/ksvg/impl/SVGMaskElementImpl.h
new file mode 100644
index 00000000..cdd1c125
--- /dev/null
+++ b/ksvg/impl/SVGMaskElementImpl.h
@@ -0,0 +1,158 @@
+/*
+    Copyright (C) 2001-2003 KSVG Team
+    This file is part of the KDE project
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#ifndef SVGMaskElementImpl_H
+#define SVGMaskElementImpl_H
+
+#include <qwmatrix.h>
+
+#include "SVGTestsImpl.h"
+#include "SVGBBoxTarget.h"
+#include "SVGElementImpl.h"
+#include "SVGStylableImpl.h"
+#include "SVGLangSpaceImpl.h"
+#include "SVGExternalResourcesRequiredImpl.h"
+#include "LRUCache.h"
+
+#include "ksvg_lookup.h"
+
+namespace KSVG
+{
+
+
+class SVGUnitConverter;
+class KSVGCanvas;
+class SVGShapeImpl;
+class SVGRectImpl;
+class SVGAnimatedLengthImpl;
+class SVGAnimatedEnumerationImpl;
+class SVGMaskElementImpl : public SVGElementImpl,
+						   public SVGTestsImpl,
+						   public SVGLangSpaceImpl,
+						   public SVGExternalResourcesRequiredImpl,
+						   public SVGStylableImpl,
+						   public SVGBBoxTarget
+{
+public:
+
+	class Mask
+	{
+	public:
+		Mask() : m_width(0), m_height(0) {}
+		Mask(const QByteArray& mask, const QWMatrix& screenToMask, int width, int height);
+		~Mask() {}
+	
+		bool isEmpty() const { return m_width == 0; }
+		unsigned char value(int screenX, int screenY) const;
+		QByteArray rectangle(int screenX, int screenY, int width, int height);
+		QByteArray rectangle(const QRect& rect);
+		void setScreenToMask(const QWMatrix& matrix) { m_screenToMask = matrix; }
+
+	private:
+		int m_width;
+		int m_height;
+		QByteArray m_mask;
+		QWMatrix m_screenToMask;
+	};
+
+	SVGMaskElementImpl(DOM::ElementImpl *);
+	virtual ~SVGMaskElementImpl();
+
+	SVGAnimatedEnumerationImpl *maskUnits() const;
+	SVGAnimatedEnumerationImpl *maskContentUnits() const;
+	SVGAnimatedLengthImpl *x() const;
+	SVGAnimatedLengthImpl *y() const;
+	SVGAnimatedLengthImpl *width() const;
+	SVGAnimatedLengthImpl *height() const;
+
+	virtual SVGRectImpl *getBBox();
+	virtual void setAttributes();
+	
+	SVGUnitConverter *converter() const { return m_converter; }
+
+	Mask createMask(SVGShapeImpl *referencingElement);
+	
+	// Compute the mask on a given shape, taking into account all masks defined
+	// on the shape's ancestors. This is a workaround for us not having a buffer
+	// for container elements, so we can't mask containers directly.
+	static QByteArray maskRectangle(SVGShapeImpl *shape, const QRect& screenRectangle);
+
+private:
+	class CacheKey
+	{
+	public:
+		CacheKey()  : m_element(0), m_width(0), m_height(0) {}
+		CacheKey(SVGElementImpl *element, int width, int height) : m_element(element), m_width(width), m_height(height) {}
+		bool operator==(const CacheKey& other) const { return m_element == other.m_element && m_width == other.m_width && m_height == other.m_height; }
+
+	private:
+		SVGElementImpl *m_element;
+		int m_width;
+		int m_height;
+	};
+
+	Mask createMask(SVGShapeImpl *referencingElement, int imageWidth, int imageHeight);
+
+	SVGAnimatedEnumerationImpl *m_maskUnits;
+	SVGAnimatedEnumerationImpl *m_maskContentUnits;
+	SVGAnimatedLengthImpl *m_x;
+	SVGAnimatedLengthImpl *m_y;
+	SVGAnimatedLengthImpl *m_width;
+	SVGAnimatedLengthImpl *m_height;
+
+	SVGUnitConverter *m_converter;
+	KSVGCanvas *m_canvas;
+
+	MinOneLRUCache<CacheKey, Mask> m_maskCache;
+
+public:
+	KSVG_GET
+	KSVG_PUT
+	KSVG_BRIDGE
+	
+	enum
+	{
+		// Properties
+		MaskUnits, MaskContentUnits, X, Y, Width, Height
+	};
+	
+	KJS::Value getValueProperty(KJS::ExecState *exec, int token) const;
+	void putValueProperty(KJS::ExecState *exec, int token, const KJS::Value &value, int attr);
+};
+
+KSVG_REGISTER_ELEMENT(SVGMaskElementImpl, "mask")
+
+inline unsigned char SVGMaskElementImpl::Mask::value(int screenX, int screenY) const
+{
+	int x, y;
+
+	m_screenToMask.map(screenX, screenY, &x, &y);
+
+	if(x >= 0 && x < m_width && y >= 0 && y < m_height)
+		return m_mask[x + y * m_width];
+	else
+		return 0;
+}
+
+}
+
+#endif
+
+// vim:ts=4:noet