/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 . */ #include #include #include #include #include #include #include using namespace com::sun::star; namespace drawinglayer { namespace primitive2d { void FillGradientPrimitive2D::generateMatricesAndColors( std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries, basegfx::BColor& rOuterColor) const { rEntries.clear(); // make sure steps is not too high/low const basegfx::BColor aStart(getFillGradient().getStartColor()); const basegfx::BColor aEnd(getFillGradient().getEndColor()); const sal_uInt32 nMaxSteps(sal_uInt32((aStart.getMaximumDistance(aEnd) * 127.5) + 0.5)); sal_uInt32 nSteps(getFillGradient().getSteps()); if(nSteps == 0) { nSteps = nMaxSteps; } if(nSteps < 2) { nSteps = 2; } if(nSteps > nMaxSteps) { nSteps = nMaxSteps; } nSteps = std::max(sal_uInt32(1), nSteps); switch(getFillGradient().getStyle()) { case attribute::GradientStyle::Linear: { texture::GeoTexSvxGradientLinear aGradient( getDefinitionRange(), getOutputRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getAngle()); aGradient.appendTransformationsAndColors(rEntries, rOuterColor); break; } case attribute::GradientStyle::Axial: { texture::GeoTexSvxGradientAxial aGradient( getDefinitionRange(), getOutputRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getAngle()); aGradient.appendTransformationsAndColors(rEntries, rOuterColor); break; } case attribute::GradientStyle::Radial: { texture::GeoTexSvxGradientRadial aGradient( getDefinitionRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY()); aGradient.appendTransformationsAndColors(rEntries, rOuterColor); break; } case attribute::GradientStyle::Elliptical: { texture::GeoTexSvxGradientElliptical aGradient( getDefinitionRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY(), getFillGradient().getAngle()); aGradient.appendTransformationsAndColors(rEntries, rOuterColor); break; } case attribute::GradientStyle::Square: { texture::GeoTexSvxGradientSquare aGradient( getDefinitionRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY(), getFillGradient().getAngle()); aGradient.appendTransformationsAndColors(rEntries, rOuterColor); break; } case attribute::GradientStyle::Rect: { texture::GeoTexSvxGradientRect aGradient( getDefinitionRange(), aStart, aEnd, nSteps, getFillGradient().getBorder(), getFillGradient().getOffsetX(), getFillGradient().getOffsetY(), getFillGradient().getAngle()); aGradient.appendTransformationsAndColors(rEntries, rOuterColor); break; } } } void FillGradientPrimitive2D::createOverlappingFill( Primitive2DContainer& rContainer, const std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries, const basegfx::BColor& rOuterColor, const basegfx::B2DPolygon& rUnitPolygon) const { // create solid fill with outmost color rContainer.push_back( new PolyPolygonColorPrimitive2D( basegfx::B2DPolyPolygon( basegfx::utils::createPolygonFromRect(getOutputRange())), rOuterColor)); // create solid fill steps for(size_t a(0); a < rEntries.size(); a++) { // create part polygon basegfx::B2DPolygon aNewPoly(rUnitPolygon); aNewPoly.transform(rEntries[a].maB2DHomMatrix); // create solid fill rContainer.push_back( new PolyPolygonColorPrimitive2D( basegfx::B2DPolyPolygon(aNewPoly), rEntries[a].maBColor)); } } void FillGradientPrimitive2D::createNonOverlappingFill( Primitive2DContainer& rContainer, const std::vector< drawinglayer::texture::B2DHomMatrixAndBColor >& rEntries, const basegfx::BColor& rOuterColor, const basegfx::B2DPolygon& rUnitPolygon) const { // get outmost visible range from object basegfx::B2DRange aOutmostRange(getOutputRange()); basegfx::B2DPolyPolygon aCombinedPolyPoly; if(!rEntries.empty()) { // extend aOutmostRange with first polygon basegfx::B2DPolygon aFirstPoly(rUnitPolygon); aFirstPoly.transform(rEntries[0].maB2DHomMatrix); aCombinedPolyPoly.append(aFirstPoly); aOutmostRange.expand(aFirstPoly.getB2DRange()); } // add outmost range to combined polypolygon (in 1st place), create first primitive aCombinedPolyPoly.insert(0, basegfx::utils::createPolygonFromRect(aOutmostRange)); rContainer.push_back( new PolyPolygonColorPrimitive2D( aCombinedPolyPoly, rOuterColor)); if(!rEntries.empty()) { // reuse first polygon, it's the second one aCombinedPolyPoly.remove(0); for(size_t a(0); a < rEntries.size() - 1; a++) { // create next inner polygon, combined with last one basegfx::B2DPolygon aNextPoly(rUnitPolygon); aNextPoly.transform(rEntries[a + 1].maB2DHomMatrix); aCombinedPolyPoly.append(aNextPoly); // create primitive with correct color rContainer.push_back( new PolyPolygonColorPrimitive2D( aCombinedPolyPoly, rEntries[a].maBColor)); // reuse inner polygon, it's the 2nd one aCombinedPolyPoly.remove(0); } // add last inner polygon with last color rContainer.push_back( new PolyPolygonColorPrimitive2D( aCombinedPolyPoly, rEntries[rEntries.size() - 1].maBColor)); } } void FillGradientPrimitive2D::createFill(Primitive2DContainer& rContainer, bool bOverlapping) const { // prepare shape of the Unit Polygon basegfx::B2DPolygon aUnitPolygon; switch(getFillGradient().getStyle()) { case attribute::GradientStyle::Radial: case attribute::GradientStyle::Elliptical: { aUnitPolygon = basegfx::utils::createPolygonFromCircle(basegfx::B2DPoint(0.0, 0.0), 1.0); break; } default: // GradientStyle::Linear, attribute::GradientStyle::Axial, attribute::GradientStyle::Square, attribute::GradientStyle::Rect { aUnitPolygon = basegfx::utils::createPolygonFromRect(basegfx::B2DRange(-1.0, -1.0, 1.0, 1.0)); break; } } // get the transform matrices and colors (where colors // will have one more entry that matrices) std::vector< drawinglayer::texture::B2DHomMatrixAndBColor > aEntries; basegfx::BColor aOuterColor; generateMatricesAndColors(aEntries, aOuterColor); if(bOverlapping) { createOverlappingFill(rContainer, aEntries, aOuterColor, aUnitPolygon); } else { createNonOverlappingFill(rContainer, aEntries, aOuterColor, aUnitPolygon); } } void FillGradientPrimitive2D::create2DDecomposition(Primitive2DContainer& rContainer, const geometry::ViewInformation2D& /*rViewInformation*/) const { // default creates overlapping fill which works with AntiAliasing and without. // The non-overlapping version does not create single filled polygons, but // PolyPolygons where each one describes a 'ring' for the gradient such // that the rings will not overlap. This is useful for the old XOR-paint // 'trick' of VCL which is recorded in Metafiles; so this version may be // used from the MetafilePrimitive2D in its decomposition. if(!getFillGradient().isDefault()) { createFill(rContainer, /*bOverlapping*/true); } } FillGradientPrimitive2D::FillGradientPrimitive2D( const basegfx::B2DRange& rOutputRange, const attribute::FillGradientAttribute& rFillGradient) : BufferedDecompositionPrimitive2D(), maOutputRange(rOutputRange), maDefinitionRange(rOutputRange), maFillGradient(rFillGradient) { } FillGradientPrimitive2D::FillGradientPrimitive2D( const basegfx::B2DRange& rOutputRange, const basegfx::B2DRange& rDefinitionRange, const attribute::FillGradientAttribute& rFillGradient) : BufferedDecompositionPrimitive2D(), maOutputRange(rOutputRange), maDefinitionRange(rDefinitionRange), maFillGradient(rFillGradient) { } bool FillGradientPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const { if(BufferedDecompositionPrimitive2D::operator==(rPrimitive)) { const FillGradientPrimitive2D& rCompare = static_cast(rPrimitive); return (getOutputRange() == rCompare.getOutputRange() && getDefinitionRange() == rCompare.getDefinitionRange() && getFillGradient() == rCompare.getFillGradient()); } return false; } basegfx::B2DRange FillGradientPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const { // return the geometrically visible area return getOutputRange(); } // provide unique ID ImplPrimitive2DIDBlock(FillGradientPrimitive2D, PRIMITIVE2D_ID_FILLGRADIENTPRIMITIVE2D) } // end of namespace primitive2d } // end of namespace drawinglayer /* vim:set shiftwidth=4 softtabstop=4 expandtab: */