4729774b24
Idea originally from caolan. Found using the following command: find . -name *.cxx | xargs /opt/local/bin/grep -zlP '(?m)if\s*\(\s*\w+\s*\)\s*delete\s+\w+\;' Change-Id: I3338f4e22193a6dfd6219c8c75835224a3392763
324 lines
14 KiB
C++
324 lines
14 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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#include <svgio/svgreader/svgmasknode.hxx>
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#include <drawinglayer/primitive2d/transformprimitive2d.hxx>
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#include <drawinglayer/primitive2d/transparenceprimitive2d.hxx>
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#include <basegfx/matrix/b2dhommatrixtools.hxx>
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#include <drawinglayer/geometry/viewinformation2d.hxx>
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#include <drawinglayer/primitive2d/modifiedcolorprimitive2d.hxx>
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#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
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#include <basegfx/polygon/b2dpolygontools.hxx>
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#include <basegfx/polygon/b2dpolygon.hxx>
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namespace svgio
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{
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namespace svgreader
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{
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SvgMaskNode::SvgMaskNode(
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SvgDocument& rDocument,
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SvgNode* pParent)
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: SvgNode(SVGTokenMask, rDocument, pParent),
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maSvgStyleAttributes(*this),
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maX(SvgNumber(-10.0, Unit_percent, true)),
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maY(SvgNumber(-10.0, Unit_percent, true)),
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maWidth(SvgNumber(120.0, Unit_percent, true)),
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maHeight(SvgNumber(120.0, Unit_percent, true)),
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mpaTransform(0),
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maMaskUnits(objectBoundingBox),
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maMaskContentUnits(userSpaceOnUse)
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{
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}
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SvgMaskNode::~SvgMaskNode()
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{
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delete mpaTransform;
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}
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const SvgStyleAttributes* SvgMaskNode::getSvgStyleAttributes() const
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{
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return &maSvgStyleAttributes;
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}
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void SvgMaskNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent)
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{
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// call parent
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SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
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// read style attributes
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maSvgStyleAttributes.parseStyleAttribute(rTokenName, aSVGToken, aContent, false);
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// parse own
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switch(aSVGToken)
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{
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case SVGTokenStyle:
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{
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readLocalCssStyle(aContent);
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break;
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}
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case SVGTokenX:
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{
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SvgNumber aNum;
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if(readSingleNumber(aContent, aNum))
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{
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setX(aNum);
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}
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break;
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}
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case SVGTokenY:
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{
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SvgNumber aNum;
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if(readSingleNumber(aContent, aNum))
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{
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setY(aNum);
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}
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break;
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}
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case SVGTokenWidth:
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{
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SvgNumber aNum;
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if(readSingleNumber(aContent, aNum))
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{
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if(aNum.isPositive())
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{
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setWidth(aNum);
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}
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}
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break;
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}
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case SVGTokenHeight:
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{
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SvgNumber aNum;
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if(readSingleNumber(aContent, aNum))
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{
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if(aNum.isPositive())
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{
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setHeight(aNum);
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}
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}
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break;
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}
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case SVGTokenTransform:
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{
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const basegfx::B2DHomMatrix aMatrix(readTransform(aContent, *this));
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if(!aMatrix.isIdentity())
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{
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setTransform(&aMatrix);
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}
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break;
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}
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case SVGTokenMaskUnits:
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{
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if(!aContent.isEmpty())
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{
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if(aContent.match(commonStrings::aStrUserSpaceOnUse, 0))
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{
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setMaskUnits(userSpaceOnUse);
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}
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else if(aContent.match(commonStrings::aStrObjectBoundingBox, 0))
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{
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setMaskUnits(objectBoundingBox);
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}
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}
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break;
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}
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case SVGTokenMaskContentUnits:
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{
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if(!aContent.isEmpty())
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{
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if(aContent.match(commonStrings::aStrUserSpaceOnUse, 0))
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{
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setMaskContentUnits(userSpaceOnUse);
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}
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else if(aContent.match(commonStrings::aStrObjectBoundingBox, 0))
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{
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setMaskContentUnits(objectBoundingBox);
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}
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}
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break;
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}
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default:
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{
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break;
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}
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}
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}
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void SvgMaskNode::decomposeSvgNode(drawinglayer::primitive2d::Primitive2DSequence& rTarget, bool bReferenced) const
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{
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drawinglayer::primitive2d::Primitive2DSequence aNewTarget;
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// decompose children
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SvgNode::decomposeSvgNode(aNewTarget, bReferenced);
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if(aNewTarget.hasElements())
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{
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if(getTransform())
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{
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// create embedding group element with transformation
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const drawinglayer::primitive2d::Primitive2DReference xRef(
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new drawinglayer::primitive2d::TransformPrimitive2D(
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*getTransform(),
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aNewTarget));
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aNewTarget = drawinglayer::primitive2d::Primitive2DSequence(&xRef, 1);
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}
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// append to current target
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drawinglayer::primitive2d::appendPrimitive2DSequenceToPrimitive2DSequence(rTarget, aNewTarget);
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}
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}
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void SvgMaskNode::apply(
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drawinglayer::primitive2d::Primitive2DSequence& rTarget,
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const basegfx::B2DHomMatrix* pTransform) const
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{
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if(rTarget.hasElements() && Display_none != getDisplay())
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{
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drawinglayer::primitive2d::Primitive2DSequence aMaskTarget;
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// get mask definition as primitives
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decomposeSvgNode(aMaskTarget, true);
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if(aMaskTarget.hasElements())
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{
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// get range of content to be masked
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const basegfx::B2DRange aContentRange(
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drawinglayer::primitive2d::getB2DRangeFromPrimitive2DSequence(
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rTarget,
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drawinglayer::geometry::ViewInformation2D()));
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const double fContentWidth(aContentRange.getWidth());
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const double fContentHeight(aContentRange.getHeight());
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if(fContentWidth > 0.0 && fContentHeight > 0.0)
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{
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// create OffscreenBufferRange
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basegfx::B2DRange aOffscreenBufferRange;
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if(objectBoundingBox == getMaskUnits())
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{
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// fractions or percentages of the bounding box of the element to which the mask is applied
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const double fX(Unit_percent == getX().getUnit() ? getX().getNumber() * 0.01 : getX().getNumber());
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const double fY(Unit_percent == getY().getUnit() ? getY().getNumber() * 0.01 : getY().getNumber());
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const double fW(Unit_percent == getWidth().getUnit() ? getWidth().getNumber() * 0.01 : getWidth().getNumber());
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const double fH(Unit_percent == getHeight().getUnit() ? getHeight().getNumber() * 0.01 : getHeight().getNumber());
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aOffscreenBufferRange = basegfx::B2DRange(
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aContentRange.getMinX() + (fX * fContentWidth),
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aContentRange.getMinY() + (fY * fContentHeight),
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aContentRange.getMinX() + ((fX + fW) * fContentWidth),
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aContentRange.getMinY() + ((fY + fH) * fContentHeight));
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}
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else
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{
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const double fX(getX().isSet() ? getX().solve(*this, xcoordinate) : 0.0);
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const double fY(getY().isSet() ? getY().solve(*this, ycoordinate) : 0.0);
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aOffscreenBufferRange = basegfx::B2DRange(
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fX,
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fY,
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fX + (getWidth().isSet() ? getWidth().solve(*this, xcoordinate) : 0.0),
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fY + (getHeight().isSet() ? getHeight().solve(*this, ycoordinate) : 0.0));
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}
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if(objectBoundingBox == getMaskContentUnits())
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{
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// mask is object-relative, embed in content transformation
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const drawinglayer::primitive2d::Primitive2DReference xTransform(
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new drawinglayer::primitive2d::TransformPrimitive2D(
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basegfx::tools::createScaleTranslateB2DHomMatrix(
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aContentRange.getRange(),
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aContentRange.getMinimum()),
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aMaskTarget));
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aMaskTarget = drawinglayer::primitive2d::Primitive2DSequence(&xTransform, 1);
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}
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else // userSpaceOnUse
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{
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// #i124852#
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if(pTransform)
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{
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const drawinglayer::primitive2d::Primitive2DReference xTransform(
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new drawinglayer::primitive2d::TransformPrimitive2D(
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*pTransform,
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aMaskTarget));
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aMaskTarget = drawinglayer::primitive2d::Primitive2DSequence(&xTransform, 1);
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}
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}
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// embed content to a ModifiedColorPrimitive2D since the definitions
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// how content is used as alpha is special for Svg
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{
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const drawinglayer::primitive2d::Primitive2DReference xInverseMask(
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new drawinglayer::primitive2d::ModifiedColorPrimitive2D(
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aMaskTarget,
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basegfx::BColorModifierSharedPtr(
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new basegfx::BColorModifier_luminance_to_alpha())));
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aMaskTarget = drawinglayer::primitive2d::Primitive2DSequence(&xInverseMask, 1);
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}
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// prepare new content
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drawinglayer::primitive2d::Primitive2DReference xNewContent(
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new drawinglayer::primitive2d::TransparencePrimitive2D(
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rTarget,
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aMaskTarget));
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// output up to now is defined by aContentRange and mask is oriented
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// relative to it. It is possible that aOffscreenBufferRange defines
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// a smaller area. In that case, embed to a mask primitive
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if(!aOffscreenBufferRange.isInside(aContentRange))
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{
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xNewContent = new drawinglayer::primitive2d::MaskPrimitive2D(
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basegfx::B2DPolyPolygon(
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basegfx::tools::createPolygonFromRect(
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aOffscreenBufferRange)),
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drawinglayer::primitive2d::Primitive2DSequence(&xNewContent, 1));
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}
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// redefine target. Use TransparencePrimitive2D with created mask
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// geometry
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rTarget = drawinglayer::primitive2d::Primitive2DSequence(&xNewContent, 1);
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}
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else
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{
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// content is geometrically empty
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rTarget.realloc(0);
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}
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}
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else
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{
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// An empty clipping path will completely clip away the element that had
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// the clip-path property applied. (Svg spec)
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rTarget.realloc(0);
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}
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}
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}
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} // end of namespace svgreader
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} // end of namespace svgio
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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