374 lines
14 KiB
C++
374 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 <xmloff/GradientStyle.hxx>
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#include <com/sun/star/awt/Gradient2.hpp>
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#include <comphelper/documentconstants.hxx>
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#include <rtl/ustrbuf.hxx>
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#include <rtl/ustring.hxx>
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#include <sal/log.hxx>
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#include <sax/tools/converter.hxx>
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#include <xmloff/xmlement.hxx>
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#include <xmloff/xmlexp.hxx>
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#include <xmloff/xmlimp.hxx>
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#include <xmloff/xmlnamespace.hxx>
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#include <xmloff/xmltoken.hxx>
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#include <xmloff/xmluconv.hxx>
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#include <basegfx/utils/bgradient.hxx>
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#include <docmodel/uno/UnoGradientTools.hxx>
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using namespace ::com::sun::star;
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using namespace ::xmloff::token;
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SvXMLEnumMapEntry<awt::GradientStyle> const pXML_GradientStyle_Enum[] =
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{
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{ XML_LINEAR, awt::GradientStyle_LINEAR },
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{ XML_GRADIENTSTYLE_AXIAL, awt::GradientStyle_AXIAL },
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{ XML_GRADIENTSTYLE_RADIAL, awt::GradientStyle_RADIAL },
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{ XML_GRADIENTSTYLE_ELLIPSOID, awt::GradientStyle_ELLIPTICAL },
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{ XML_GRADIENTSTYLE_SQUARE, awt::GradientStyle_SQUARE },
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{ XML_GRADIENTSTYLE_RECTANGULAR, awt::GradientStyle_RECT },
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{ XML_TOKEN_INVALID, awt::GradientStyle(0) }
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};
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// Import
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XMLGradientStyleImport::XMLGradientStyleImport(
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SvXMLImport& rImp )
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: m_rImport(rImp)
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{
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}
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void XMLGradientStyleImport::importXML(
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const uno::Reference< xml::sax::XFastAttributeList >& xAttrList,
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uno::Any& rValue,
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OUString& rStrName )
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{
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OUString aDisplayName;
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awt::Gradient2 aGradient;
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aGradient.Style = css::awt::GradientStyle_LINEAR;
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aGradient.StartColor = 0;
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aGradient.EndColor = 0;
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aGradient.Angle = 0;
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aGradient.Border = 0;
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aGradient.XOffset = 0;
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aGradient.YOffset = 0;
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aGradient.StartIntensity = 100;
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aGradient.EndIntensity = 100;
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aGradient.StepCount = 0;
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for (auto &aIter : sax_fastparser::castToFastAttributeList( xAttrList ))
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{
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sal_Int32 nTmpValue(0);
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switch( aIter.getToken() )
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{
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case XML_ELEMENT(DRAW, XML_NAME):
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rStrName = aIter.toString();
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break;
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case XML_ELEMENT(DRAW, XML_DISPLAY_NAME):
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aDisplayName = aIter.toString();
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break;
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case XML_ELEMENT(DRAW, XML_STYLE):
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SvXMLUnitConverter::convertEnum( aGradient.Style, aIter.toView(), pXML_GradientStyle_Enum );
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break;
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case XML_ELEMENT(DRAW, XML_CX):
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::sax::Converter::convertPercent( nTmpValue, aIter.toView() );
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aGradient.XOffset = static_cast< sal_Int16 >( nTmpValue );
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break;
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case XML_ELEMENT(DRAW, XML_CY):
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::sax::Converter::convertPercent( nTmpValue, aIter.toView() );
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aGradient.YOffset = static_cast< sal_Int16 >( nTmpValue );
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break;
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case XML_ELEMENT(DRAW, XML_START_COLOR):
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::sax::Converter::convertColor(aGradient.StartColor, aIter.toView());
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break;
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case XML_ELEMENT(DRAW, XML_END_COLOR):
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::sax::Converter::convertColor(aGradient.EndColor, aIter.toView());
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break;
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case XML_ELEMENT(DRAW, XML_START_INTENSITY):
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::sax::Converter::convertPercent( nTmpValue, aIter.toView() );
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aGradient.StartIntensity = static_cast< sal_Int16 >( nTmpValue );
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break;
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case XML_ELEMENT(DRAW, XML_END_INTENSITY):
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::sax::Converter::convertPercent( nTmpValue, aIter.toView() );
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aGradient.EndIntensity = static_cast< sal_Int16 >( nTmpValue );
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break;
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case XML_ELEMENT(DRAW, XML_GRADIENT_ANGLE):
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{
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auto const cmp12(m_rImport.GetODFVersion().compareTo(ODFVER_012_TEXT));
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// tdf#89475 try to detect borked OOo angles
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bool const bIsWrongOOo10thDegAngle(
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(cmp12 < 0)
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|| (cmp12 == 0
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&& (m_rImport.isGeneratorVersionOlderThan(SvXMLImport::AOO_4x,
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SvXMLImport::LO_7x)
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// also for AOO 4.x, assume there won't ever be a 4.2
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|| m_rImport.getGeneratorVersion() == SvXMLImport::AOO_4x)));
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sal_Int16 nAngle;
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bool const bSuccess = ::sax::Converter::convert10thDegAngle(
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nAngle, aIter.toView(), bIsWrongOOo10thDegAngle);
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if (bSuccess)
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{ // limit to valid range [0..3600[
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nAngle = nAngle % 3600;
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if (nAngle < 0)
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nAngle += 3600;
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aGradient.Angle = nAngle;
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}
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SAL_INFO_IF(!bSuccess, "xmloff.style", "failed to import draw:angle");
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}
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break;
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case XML_ELEMENT(DRAW, XML_BORDER):
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::sax::Converter::convertPercent( nTmpValue, aIter.toView() );
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aGradient.Border = static_cast< sal_Int16 >( nTmpValue );
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break;
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default:
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XMLOFF_WARN_UNKNOWN("xmloff.style", aIter);
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}
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}
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rValue <<= aGradient;
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if( !aDisplayName.isEmpty() )
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{
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m_rImport.AddStyleDisplayName( XmlStyleFamily::SD_GRADIENT_ID, rStrName,
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aDisplayName );
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rStrName = aDisplayName;
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}
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}
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XMLGradientStopContext::XMLGradientStopContext(
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SvXMLImport& rImport, sal_Int32 nElement,
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const uno::Reference< xml::sax::XFastAttributeList >& xAttrList,
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std::vector<awt::ColorStop>& rColorStopVec)
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: SvXMLImportContext(rImport)
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{
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if(nElement != XML_ELEMENT(LO_EXT, xmloff::token::XML_GRADIENT_STOP))
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return;
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double fOffset = -1.0;
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OUString sColorType;
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OUString sColorValue;
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// First collect all attributes
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for (auto &aIter : sax_fastparser::castToFastAttributeList(xAttrList))
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{
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switch(aIter.getToken())
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{
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case XML_ELEMENT(SVG, xmloff::token::XML_OFFSET): // needed??
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case XML_ELEMENT(SVG_COMPAT, xmloff::token::XML_OFFSET):
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if (!::sax::Converter::convertDouble(fOffset, aIter.toView()))
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return;
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break;
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case XML_ELEMENT(LO_EXT, xmloff::token::XML_COLOR_VALUE):
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sColorValue = aIter.toString();
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if (sColorValue.isEmpty())
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return;
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break;
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case XML_ELEMENT(LO_EXT, xmloff::token::XML_COLOR_TYPE):
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sColorType = aIter.toString();
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if (sColorType.isEmpty())
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return;
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break;
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default:
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XMLOFF_WARN_UNKNOWN("xmloff.style", aIter);
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}
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}
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// As of LO 7.6.0 only "rgb" is implemented.
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if (sColorType != u"rgb")
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return;
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// Type "rgb" requires kind color-value="#rrggbb".
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::Color aColor;
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if (!::sax::Converter::convertColor(aColor, sColorValue))
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return;
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// All attribute values OK. Generate ColorStop.
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css::rendering::RGBColor aRGBColor;
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aRGBColor.Red = aColor.GetRed() / 255.0;
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aRGBColor.Green = aColor.GetGreen() / 255.0;
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aRGBColor.Blue = aColor.GetBlue() / 255.0;
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awt::ColorStop aColorStop;
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aColorStop.StopOffset = fOffset;
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aColorStop.StopColor = aRGBColor;
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rColorStopVec.push_back(aColorStop);
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}
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XMLGradientStopContext::~XMLGradientStopContext()
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{
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}
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// Export
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XMLGradientStyleExport::XMLGradientStyleExport(
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SvXMLExport& rExp )
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: m_rExport(rExp)
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{
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}
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void XMLGradientStyleExport::exportXML(
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const OUString& rStrName,
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const uno::Any& rValue )
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{
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if( rStrName.isEmpty() )
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return;
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if (!rValue.has<css::awt::Gradient2>() && !rValue.has<css::awt::Gradient>())
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return;
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basegfx::BGradient aGradient = model::gradient::getFromAny(rValue);
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// Export of axial gradient to OOXML produces a symmetrical linear multi-color gradient. Import
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// does not regenerate it as 'axial' because that is not needed for MCGR. For export to ODF we
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// try to regenerate 'axial' for to get a better compatibility with LO versions before MCGR.
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aGradient.tryToConvertToAxial();
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// MCGR: For better compatibility with LO versions before MCGR, try
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// to re-create a 'border' value based on the existing gradient stops.
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// With MCGR we do not need 'border' anymore in quite some cases since
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// no Start/EndColor at 0.0 resp. 1.0 is explicitly needed. Since we
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// (unfortunately need to) internally continue to support border
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// anyways it does no harm to fallback to use the border value - if
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// there is an equivalent representation as this helper checks for.
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// For exports that do not support 'border' this will be adapted as
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// needed (see tryToApplyBorder()).
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aGradient.tryToRecreateBorder(nullptr);
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OUString aStrValue;
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OUStringBuffer aOut;
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// Style
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if( !SvXMLUnitConverter::convertEnum( aOut, aGradient.GetGradientStyle(), pXML_GradientStyle_Enum ) )
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return;
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// Name
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bool bEncoded = false;
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_NAME,
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m_rExport.EncodeStyleName( rStrName,
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&bEncoded ) );
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if( bEncoded )
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_DISPLAY_NAME,
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rStrName );
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_STYLE, aStrValue );
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// Center x/y
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if( aGradient.GetGradientStyle() != awt::GradientStyle_LINEAR &&
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aGradient.GetGradientStyle() != awt::GradientStyle_AXIAL )
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{
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::sax::Converter::convertPercent(aOut, aGradient.GetXOffset());
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_CX, aStrValue );
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::sax::Converter::convertPercent(aOut, aGradient.GetYOffset());
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_CY, aStrValue );
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}
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// prep Start/EndColor, default black
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basegfx::BColor aStartColor;
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basegfx::BColor aEndColor;
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if (!aGradient.GetColorStops().empty())
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{
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aStartColor = aGradient.GetColorStops().front().getStopColor();
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aEndColor = aGradient.GetColorStops().back().getStopColor();
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}
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// Color start
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::sax::Converter::convertColor(aOut, Color(aStartColor));
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_START_COLOR, aStrValue );
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// Color end
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::sax::Converter::convertColor(aOut, Color(aEndColor));
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_END_COLOR, aStrValue );
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// Intensity start
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::sax::Converter::convertPercent(aOut, aGradient.GetStartIntens());
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_START_INTENSITY, aStrValue );
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// Intensity end
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::sax::Converter::convertPercent(aOut, aGradient.GetEndIntens());
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_END_INTENSITY, aStrValue );
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// Angle
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if( aGradient.GetGradientStyle() != awt::GradientStyle_RADIAL )
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{
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// true: wrong, but backward compatible with OOo/LO < 4.4
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// false: OFFICE-3774 tdf#89475 write valid ODF 1.2 angle; needs LO 4.4 to import
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bool bIsWrongOOo10thDegAngle(m_rExport.getSaneDefaultVersion() < SvtSaveOptions::ODFSVER_012
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|| m_rExport.getSaneDefaultVersion() == SvtSaveOptions::ODFSVER_012_EXT_COMPAT);
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::sax::Converter::convert10thDegAngle(aOut, static_cast<sal_Int16>(aGradient.GetAngle()),
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bIsWrongOOo10thDegAngle);
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_GRADIENT_ANGLE, aStrValue );
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}
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// Border
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::sax::Converter::convertPercent( aOut, aGradient.GetBorder() );
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aStrValue = aOut.makeStringAndClear();
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m_rExport.AddAttribute( XML_NAMESPACE_DRAW, XML_BORDER, aStrValue );
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// ctor writes start tag. End-tag is written by destructor at block end.
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SvXMLElementExport aElem( m_rExport, XML_NAMESPACE_DRAW, XML_GRADIENT,
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true, false );
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// Write child elements <loext:gradient-stop>
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// Do not export in standard ODF 1.3 or older.
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if ((m_rExport.getSaneDefaultVersion() & SvtSaveOptions::ODFSVER_EXTENDED) == 0)
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return;
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if (aGradient.GetColorStops().empty())
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return;
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double fPreviousOffset = 0.0;
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for (const auto& aCandidate : aGradient.GetColorStops())
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{
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// Attribute svg:offset. Make sure offsets are increasing.
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double fOffset = std::clamp<double>(aCandidate.getStopOffset(), 0.0, 1.0);
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if (fOffset < fPreviousOffset)
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fOffset = fPreviousOffset;
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m_rExport.AddAttribute(XML_NAMESPACE_SVG, XML_OFFSET, OUString::number(fOffset));
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fPreviousOffset = fOffset;
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// As of LO 7.6.0 only color-type="rgb" is implemented.
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m_rExport.AddAttribute(XML_NAMESPACE_LO_EXT, XML_COLOR_TYPE, u"rgb"_ustr);
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// Attribute loext:color-value, data type color, that is #rrggbb.
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const basegfx::BColor aDecimalColor(aCandidate.getStopColor());
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::Color aToolsColor(std::clamp<sal_uInt8>(std::round(aDecimalColor.getRed() * 255.0), 0, 255),
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std::clamp<sal_uInt8>(std::round(aDecimalColor.getGreen() * 255.0), 0, 255),
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std::clamp<sal_uInt8>(std::round(aDecimalColor.getBlue() * 255.0), 0, 255));
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m_rExport.AddAttribute(XML_NAMESPACE_LO_EXT, XML_COLOR_VALUE,
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rtl::OUStringChar('#') + aToolsColor.AsRGBHexString());
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// write gradient stop element
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SvXMLElementExport aStopElement(m_rExport, XML_NAMESPACE_LO_EXT, XML_GRADIENT_STOP, true, true);
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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