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Diffstat (limited to 'canvas/source/directx/dx_canvashelper_texturefill.cxx')
| -rw-r--r-- | canvas/source/directx/dx_canvashelper_texturefill.cxx | 608 |
1 files changed, 608 insertions, 0 deletions
diff --git a/canvas/source/directx/dx_canvashelper_texturefill.cxx b/canvas/source/directx/dx_canvashelper_texturefill.cxx new file mode 100644 index 000000000..0bea70fc8 --- /dev/null +++ b/canvas/source/directx/dx_canvashelper_texturefill.cxx @@ -0,0 +1,608 @@ +/* -*- 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 <sal/config.h> + +#include <cstdlib> +#include <memory> +#include <tuple> + +#include <basegfx/matrix/b2dhommatrix.hxx> +#include <basegfx/matrix/b2dhommatrixtools.hxx> +#include <basegfx/numeric/ftools.hxx> +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/polygon/b2dpolygontools.hxx> +#include <basegfx/range/b2drectangle.hxx> +#include <basegfx/utils/canvastools.hxx> +#include <basegfx/utils/keystoplerp.hxx> +#include <basegfx/utils/lerp.hxx> +#include <basegfx/utils/tools.hxx> +#include <com/sun/star/rendering/TexturingMode.hpp> +#include <rtl/math.hxx> +#include <tools/diagnose_ex.h> + +#include <parametricpolypolygon.hxx> + +#include "dx_canvashelper.hxx" +#include "dx_impltools.hxx" +#include "dx_spritecanvas.hxx" + + +using namespace ::com::sun::star; + +namespace dxcanvas +{ + namespace + { + typedef std::shared_ptr< Gdiplus::PathGradientBrush > PathGradientBrushSharedPtr; + + bool fillLinearGradient( GraphicsSharedPtr const & rGraphics, + const ::canvas::ParametricPolyPolygon::Values& /*rValues*/, + const std::vector< Gdiplus::Color >& rColors, + const std::vector< Gdiplus::REAL >& rStops, + const GraphicsPathSharedPtr& rFillPath, + const rendering::Texture& texture ) + { + // setup a linear gradient with given colors + + + Gdiplus::LinearGradientBrush aBrush( + Gdiplus::PointF(0.0f, + 0.5f), + Gdiplus::PointF(1.0f, + 0.5f), + rColors[0], + rColors[1] ); + + aBrush.SetInterpolationColors(rColors.data(), + rStops.data(), + rColors.size()); + + // render background color, as LinearGradientBrush does not + // properly support the WrapModeClamp repeat mode + Gdiplus::SolidBrush aBackgroundBrush( rColors[0] ); + rGraphics->FillPath( &aBackgroundBrush, rFillPath.get() ); + + // TODO(F2): This does not yet support other repeat modes + // except clamp, and probably also no multi-texturing + + // calculate parallelogram of gradient in object space, extend + // top and bottom of it such that they cover the whole fill + // path bound area + ::basegfx::B2DHomMatrix aTextureTransform; + ::basegfx::unotools::homMatrixFromAffineMatrix( aTextureTransform, + texture.AffineTransform ); + + ::basegfx::B2DPoint aLeftTop( 0.0, 0.0 ); + ::basegfx::B2DPoint aLeftBottom( 0.0, 1.0 ); + ::basegfx::B2DPoint aRightTop( 1.0, 0.0 ); + ::basegfx::B2DPoint aRightBottom( 1.0, 1.0 ); + + aLeftTop *= aTextureTransform; + aLeftBottom *= aTextureTransform; + aRightTop *= aTextureTransform; + aRightBottom*= aTextureTransform; + + Gdiplus::RectF aBounds; + rFillPath->GetBounds( &aBounds ); + + // now, we potentially have to enlarge our gradient area + // atop and below the transformed [0,1]x[0,1] unit rect, + // for the gradient to fill the complete bound rect. + ::basegfx::utils::infiniteLineFromParallelogram( aLeftTop, + aLeftBottom, + aRightTop, + aRightBottom, + tools::b2dRangeFromGdiPlusRectF( aBounds ) ); + + // calc length of bound rect diagonal + const double nDiagonalLength( + hypot( aBounds.Width, + aBounds.Height ) ); + + // generate a path which covers the 'right' side of the + // gradient, extending two times the bound rect diagonal to + // the right (and thus covering the whole half plane 'right' + // of the gradient). Take the middle of the gradient as the + // 'left' side of the polygon, to not fall victim to rounding + // errors at the edge. + ::basegfx::B2DVector aDirection( aLeftTop - aLeftBottom ); + aDirection = ::basegfx::getNormalizedPerpendicular( aDirection ); + aDirection *= nDiagonalLength; + + const ::basegfx::B2DPoint aHalfPlaneLeftTop( (aLeftTop + aRightTop) * 0.5 ); + const ::basegfx::B2DPoint aHalfPlaneLeftBottom( (aLeftBottom + aRightBottom) * 0.5 ); + const ::basegfx::B2DPoint aHalfPlaneRightTop( aRightTop + aDirection ); + const ::basegfx::B2DPoint aHalfPlaneRightBottom( aRightBottom + aDirection ); + + Gdiplus::GraphicsPath aSolidFillPath; + aSolidFillPath.AddLine( static_cast<Gdiplus::REAL>(aHalfPlaneLeftTop.getX()), + static_cast<Gdiplus::REAL>(aHalfPlaneLeftTop.getY()), + static_cast<Gdiplus::REAL>(aHalfPlaneRightTop.getX()), + static_cast<Gdiplus::REAL>(aHalfPlaneRightTop.getY()) ); + aSolidFillPath.AddLine( static_cast<Gdiplus::REAL>(aHalfPlaneRightBottom.getX()), + static_cast<Gdiplus::REAL>(aHalfPlaneRightBottom.getY()), + static_cast<Gdiplus::REAL>(aHalfPlaneLeftBottom.getX()), + static_cast<Gdiplus::REAL>(aHalfPlaneLeftBottom.getY()) ); + aSolidFillPath.CloseFigure(); + + // limit output to fill path, we've just generated a path that + // might be substantially larger + if( Gdiplus::Ok != rGraphics->SetClip( rFillPath.get(), + Gdiplus::CombineModeIntersect ) ) + { + return false; + } + + Gdiplus::SolidBrush aBackgroundBrush2( rColors.back() ); + rGraphics->FillPath( &aBackgroundBrush2, &aSolidFillPath ); + + // generate clip polygon from the extended parallelogram + // (exploit the feature that distinct lines in a figure are + // automatically closed by a straight line) + Gdiplus::GraphicsPath aClipPath; + aClipPath.AddLine( static_cast<Gdiplus::REAL>(aLeftTop.getX()), + static_cast<Gdiplus::REAL>(aLeftTop.getY()), + static_cast<Gdiplus::REAL>(aRightTop.getX()), + static_cast<Gdiplus::REAL>(aRightTop.getY()) ); + aClipPath.AddLine( static_cast<Gdiplus::REAL>(aRightBottom.getX()), + static_cast<Gdiplus::REAL>(aRightBottom.getY()), + static_cast<Gdiplus::REAL>(aLeftBottom.getX()), + static_cast<Gdiplus::REAL>(aLeftBottom.getY()) ); + aClipPath.CloseFigure(); + + // limit output to a _single_ strip of the gradient (have to + // clip here, since GDI+ wrapmode clamp does not work here) + if( Gdiplus::Ok != rGraphics->SetClip( &aClipPath, + Gdiplus::CombineModeIntersect ) ) + { + return false; + } + + // now, finally, output the gradient + Gdiplus::Matrix aMatrix; + tools::gdiPlusMatrixFromAffineMatrix2D( aMatrix, + texture.AffineTransform ); + aBrush.SetTransform( &aMatrix ); + + rGraphics->FillRectangle( &aBrush, aBounds ); + + return true; + } + + int numColorSteps( const Gdiplus::Color& rColor1, const Gdiplus::Color& rColor2 ) + { + return std::max( + std::abs( rColor1.GetRed() - rColor2.GetRed() ), + std::max( + std::abs( rColor1.GetGreen() - rColor2.GetGreen() ), + std::abs( rColor1.GetBlue() - rColor2.GetBlue() ) ) ); + } + + bool fillPolygonalGradient( const ::canvas::ParametricPolyPolygon::Values& rValues, + const std::vector< Gdiplus::Color >& rColors, + const std::vector< Gdiplus::REAL >& rStops, + GraphicsSharedPtr const & rGraphics, + const GraphicsPathSharedPtr& rPath, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const rendering::Texture& texture ) + { + // copy original fill path object, might have to change it + // below + GraphicsPathSharedPtr pFillPath( rPath ); + const ::basegfx::B2DPolygon& rGradientPoly( rValues.maGradientPoly ); + + PathGradientBrushSharedPtr pGradientBrush; + + // fill background uniformly with end color + Gdiplus::SolidBrush aBackgroundBrush( rColors[0] ); + rGraphics->FillPath( &aBackgroundBrush, pFillPath.get() ); + + Gdiplus::Matrix aMatrix; + // scale focus according to aspect ratio: for wider-than-tall + // bounds (nAspectRatio > 1.0), the focus must have non-zero + // width. Specifically, a bound rect twice as wide as tall has + // a focus of half its width. + if( !::rtl::math::approxEqual(rValues.mnAspectRatio, + 1.0) ) + { + // KLUDGE 1: + + // And here comes the greatest shortcoming of the GDI+ + // gradients ever: SetFocusScales completely ignores + // transformations, both when set at the PathGradientBrush + // and for the world coordinate system. Thus, to correctly + // display anisotrophic path gradients, we have to render + // them by hand. WTF. + + // TODO(F2): This does not yet support other repeat modes + // except clamp, and probably also no multi-texturing + + // limit output to to-be-filled polygon + if( Gdiplus::Ok != rGraphics->SetClip( pFillPath.get(), + Gdiplus::CombineModeIntersect ) ) + { + return false; + } + + // disable anti-aliasing, if any + const Gdiplus::SmoothingMode eOldAAMode( rGraphics->GetSmoothingMode() ); + rGraphics->SetSmoothingMode( Gdiplus::SmoothingModeHighSpeed ); + + + // determine number of steps to use + + + // TODO(Q2): Unify step calculations with VCL canvas + int nColorSteps = 0; + for( size_t i=0; i<rColors.size()-1; ++i ) + nColorSteps += numColorSteps(rColors[i],rColors[i+1]); + ::basegfx::B2DHomMatrix aTotalTransform; + const int nStepCount= + ::canvas::tools::calcGradientStepCount(aTotalTransform, + viewState, + renderState, + texture, + nColorSteps); + + ::basegfx::B2DHomMatrix aTextureTransform; + ::basegfx::unotools::homMatrixFromAffineMatrix( aTextureTransform, + texture.AffineTransform ); + // determine overall transformation for inner polygon (might + // have to be prefixed by anisotrophic scaling) + ::basegfx::B2DHomMatrix aInnerPolygonTransformMatrix; + + // For performance reasons, we create a temporary VCL polygon + // here, keep it all the way and only change the vertex values + // in the loop below (as ::Polygon is a pimpl class, creating + // one every loop turn would really stress the mem allocator) + ::basegfx::B2DPolygon aOuterPoly( rGradientPoly ); + ::basegfx::B2DPolygon aInnerPoly; + + // subdivide polygon _before_ rendering, would otherwise have + // to be performed on every loop turn. + if( aOuterPoly.areControlPointsUsed() ) + aOuterPoly = ::basegfx::utils::adaptiveSubdivideByAngle(aOuterPoly); + + aInnerPoly = aOuterPoly; + aOuterPoly.transform(aTextureTransform); + + + // apply scaling (possibly anisotrophic) to inner polygon + + + // scale inner polygon according to aspect ratio: for + // wider-than-tall bounds (nAspectRatio > 1.0), the inner + // polygon, representing the gradient focus, must have + // non-zero width. Specifically, a bound rect twice as wide as + // tall has a focus polygon of half its width. + const double nAspectRatio( rValues.mnAspectRatio ); + if( nAspectRatio > 1.0 ) + { + // width > height case + aInnerPolygonTransformMatrix.scale( 1.0 - 1.0/nAspectRatio, + 0.0 ); + } + else if( nAspectRatio < 1.0 ) + { + // width < height case + aInnerPolygonTransformMatrix.scale( 0.0, + 1.0 - nAspectRatio ); + } + else + { + // isotrophic case + aInnerPolygonTransformMatrix.scale( 0.0, 0.0 ); + } + + // and finally, add texture transform to it. + aInnerPolygonTransformMatrix *= aTextureTransform; + + // apply final matrix to polygon + aInnerPoly.transform( aInnerPolygonTransformMatrix ); + + Gdiplus::GraphicsPath aCurrPath; + Gdiplus::SolidBrush aFillBrush( rColors[0] ); + const sal_uInt32 nNumPoints( aOuterPoly.count() ); + basegfx::utils::KeyStopLerp aLerper(rValues.maStops); + for( int i=1; i<nStepCount; ++i ) + { + std::ptrdiff_t nIndex; + double fAlpha; + const double fT( i/double(nStepCount) ); + std::tie(nIndex,fAlpha)=aLerper.lerp(fT); + + const Gdiplus::Color aFillColor( + static_cast<BYTE>( basegfx::utils::lerp(rColors[nIndex].GetRed(),rColors[nIndex+1].GetRed(),fAlpha) ), + static_cast<BYTE>( basegfx::utils::lerp(rColors[nIndex].GetGreen(),rColors[nIndex+1].GetGreen(),fAlpha) ), + static_cast<BYTE>( basegfx::utils::lerp(rColors[nIndex].GetBlue(),rColors[nIndex+1].GetBlue(),fAlpha) ) ); + + aFillBrush.SetColor( aFillColor ); + aCurrPath.Reset(); aCurrPath.StartFigure(); + for( unsigned int p=1; p<nNumPoints; ++p ) + { + const ::basegfx::B2DPoint& rOuterPoint1( aOuterPoly.getB2DPoint(p-1) ); + const ::basegfx::B2DPoint& rInnerPoint1( aInnerPoly.getB2DPoint(p-1) ); + const ::basegfx::B2DPoint& rOuterPoint2( aOuterPoly.getB2DPoint(p) ); + const ::basegfx::B2DPoint& rInnerPoint2( aInnerPoly.getB2DPoint(p) ); + + aCurrPath.AddLine( + Gdiplus::REAL(fT*rInnerPoint1.getX() + (1-fT)*rOuterPoint1.getX()), + Gdiplus::REAL(fT*rInnerPoint1.getY() + (1-fT)*rOuterPoint1.getY()), + Gdiplus::REAL(fT*rInnerPoint2.getX() + (1-fT)*rOuterPoint2.getX()), + Gdiplus::REAL(fT*rInnerPoint2.getY() + (1-fT)*rOuterPoint2.getY())); + } + aCurrPath.CloseFigure(); + + rGraphics->FillPath( &aFillBrush, &aCurrPath ); + } + + // reset to old anti-alias mode + rGraphics->SetSmoothingMode( eOldAAMode ); + } + else + { + // KLUDGE 2: + + // We're generating a PathGradientBrush from scratch here, + // and put in a transformed GraphicsPath (transformed with + // the texture transform). This is because the + // straight-forward approach to store a Brush pointer at + // this class and set a texture transform via + // PathGradientBrush::SetTransform() is spoiled by MS: it + // seems that _either_ the texture transform, _or_ the + // transform at the Graphics can be set, but not both. If + // one sets both, only the translational components of the + // texture is respected. + + tools::gdiPlusMatrixFromAffineMatrix2D( aMatrix, + texture.AffineTransform ); + GraphicsPathSharedPtr pGradientPath( + tools::graphicsPathFromB2DPolygon( rValues.maGradientPoly )); + pGradientPath->Transform( &aMatrix ); + + pGradientBrush + = std::make_shared<Gdiplus::PathGradientBrush>( pGradientPath.get() ); + pGradientBrush->SetInterpolationColors( rColors.data(), + rStops.data(), + rStops.size() ); + + // explicitly setup center point. Since the center of GDI+ + // gradients are by default the _centroid_ of the path + // (i.e. the weighted sum of edge points), it will not + // necessarily coincide with our notion of center. + Gdiplus::PointF aCenterPoint(0, 0); + aMatrix.TransformPoints( &aCenterPoint ); + pGradientBrush->SetCenterPoint( aCenterPoint ); + + const bool bTileX( texture.RepeatModeX != rendering::TexturingMode::CLAMP ); + const bool bTileY( texture.RepeatModeY != rendering::TexturingMode::CLAMP ); + + if( bTileX && bTileY ) + pGradientBrush->SetWrapMode( Gdiplus::WrapModeTile ); + else + { + OSL_ENSURE( bTileY == bTileX, + "ParametricPolyPolygon::fillPolygonalGradient(): Cannot have repeat x and repeat y differ!" ); + + pGradientBrush->SetWrapMode( Gdiplus::WrapModeClamp ); + } + + // render actual gradient + rGraphics->FillPath( pGradientBrush.get(), pFillPath.get() ); + } + +#if OSL_DEBUG_LEVEL > 0 + Gdiplus::Pen aPen( Gdiplus::Color( 255, 255, 0, 0 ), + 0.0001f ); + + rGraphics->DrawRectangle( &aPen, + Gdiplus::RectF( 0.0f, 0.0f, + 1.0f, 1.0f ) ); +#endif + + return true; + } + + bool fillGradient( const ::canvas::ParametricPolyPolygon::Values& rValues, + const std::vector< Gdiplus::Color >& rColors, + const std::vector< Gdiplus::REAL >& rStops, + GraphicsSharedPtr const & rGraphics, + const GraphicsPathSharedPtr& rPath, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const rendering::Texture& texture ) + { + switch( rValues.meType ) + { + case ::canvas::ParametricPolyPolygon::GradientType::Linear: + fillLinearGradient( rGraphics, + rValues, + rColors, + rStops, + rPath, + texture ); + break; + + case ::canvas::ParametricPolyPolygon::GradientType::Elliptical: + case ::canvas::ParametricPolyPolygon::GradientType::Rectangular: + fillPolygonalGradient( rValues, + rColors, + rStops, + rGraphics, + rPath, + viewState, + renderState, + texture ); + break; + + default: + ENSURE_OR_THROW( false, + "CanvasHelper::fillGradient(): Unexpected case" ); + } + + return true; + } + + void fillBitmap( const uno::Reference< rendering::XBitmap >& xBitmap, + GraphicsSharedPtr const & rGraphics, + const GraphicsPathSharedPtr& rPath, + const rendering::Texture& rTexture ) + { + OSL_ENSURE( rTexture.RepeatModeX == + rTexture.RepeatModeY, + "CanvasHelper::fillBitmap(): GDI+ cannot handle differing X/Y repeat mode." ); + + const bool bClamp( rTexture.RepeatModeX == rendering::TexturingMode::NONE && + rTexture.RepeatModeY == rendering::TexturingMode::NONE ); + + const geometry::IntegerSize2D aBmpSize( xBitmap->getSize() ); + ENSURE_ARG_OR_THROW( aBmpSize.Width != 0 && + aBmpSize.Height != 0, + "CanvasHelper::fillBitmap(): zero-sized texture bitmap" ); + + // TODO(P3): Detect case that path is rectangle and + // bitmap is just scaled into that. Then, we can + // render directly, without generating a temporary + // GDI+ bitmap (this is significant, because drawing + // layer presents background object bitmap in that + // way!) + BitmapSharedPtr pBitmap( + tools::bitmapFromXBitmap( xBitmap ) ); + + TextureBrushSharedPtr pBrush; + if( ::rtl::math::approxEqual( rTexture.Alpha, + 1.0 ) ) + { + pBrush = std::make_shared<Gdiplus::TextureBrush>( + pBitmap.get(), + bClamp ? Gdiplus::WrapModeClamp : Gdiplus::WrapModeTile ); + } + else + { + Gdiplus::ImageAttributes aImgAttr; + + tools::setModulateImageAttributes( aImgAttr, + 1.0, + 1.0, + 1.0, + rTexture.Alpha ); + + Gdiplus::Rect aRect(0,0, + aBmpSize.Width, + aBmpSize.Height); + pBrush = std::make_shared<Gdiplus::TextureBrush>( + pBitmap.get(), + aRect, + &aImgAttr ); + + pBrush->SetWrapMode( + bClamp ? Gdiplus::WrapModeClamp : Gdiplus::WrapModeTile ); + } + + Gdiplus::Matrix aTextureTransform; + tools::gdiPlusMatrixFromAffineMatrix2D( aTextureTransform, + rTexture.AffineTransform ); + + // scale down bitmap to [0,1]x[0,1] rect, as required + // from the XCanvas interface. + pBrush->MultiplyTransform( &aTextureTransform ); + pBrush->ScaleTransform( static_cast< Gdiplus::REAL >(1.0/aBmpSize.Width), + static_cast< Gdiplus::REAL >(1.0/aBmpSize.Height) ); + + // TODO(F1): FillRule + ENSURE_OR_THROW( + Gdiplus::Ok == rGraphics->FillPath( pBrush.get(), + rPath.get() ), + "CanvasHelper::fillTexturedPolyPolygon(): GDI+ call failed" ); + } + } + + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::fillTexturedPolyPolygon( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const uno::Sequence< rendering::Texture >& textures ) + { + ENSURE_OR_THROW( xPolyPolygon.is(), + "CanvasHelper::fillTexturedPolyPolygon: polygon is NULL"); + ENSURE_OR_THROW( textures.getLength(), + "CanvasHelper::fillTexturedPolyPolygon: empty texture sequence"); + + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + // TODO(F1): Multi-texturing + if( textures[0].Gradient.is() ) + { + // try to cast XParametricPolyPolygon2D reference to + // our implementation class. + ::canvas::ParametricPolyPolygon* pGradient = + dynamic_cast< ::canvas::ParametricPolyPolygon* >( textures[0].Gradient.get() ); + + if( pGradient ) + { + const ::canvas::ParametricPolyPolygon::Values& rValues( + pGradient->getValues() ); + + OSL_ASSERT(rValues.maColors.getLength() == rValues.maStops.getLength() + && rValues.maColors.getLength() > 1); + + std::vector< Gdiplus::Color > aColors(rValues.maColors.getLength()); + std::transform(&rValues.maColors[0], + &rValues.maColors[0]+rValues.maColors.getLength(), + aColors.begin(), + [](const uno::Sequence< double >& aDoubleSequence) { return tools::sequenceToArgb(aDoubleSequence); } ); + std::vector< Gdiplus::REAL > aStops; + comphelper::sequenceToContainer(aStops,rValues.maStops); + + // TODO(E1): Return value + // TODO(F1): FillRule + fillGradient( rValues, + aColors, + aStops, + pGraphics, + tools::graphicsPathFromXPolyPolygon2D( xPolyPolygon ), + viewState, + renderState, + textures[0] ); + } + } + else if( textures[0].Bitmap.is() ) + { + // TODO(E1): Return value + // TODO(F1): FillRule + fillBitmap( textures[0].Bitmap, + pGraphics, + tools::graphicsPathFromXPolyPolygon2D( xPolyPolygon ), + textures[0] ); + } + } + + // TODO(P1): Provide caching here. + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |