diff options
Diffstat (limited to 'canvas/source/cairo/cairo_canvashelper.cxx')
| -rw-r--r-- | canvas/source/cairo/cairo_canvashelper.cxx | 2047 |
1 files changed, 2047 insertions, 0 deletions
diff --git a/canvas/source/cairo/cairo_canvashelper.cxx b/canvas/source/cairo/cairo_canvashelper.cxx new file mode 100644 index 000000000..8f46c5b85 --- /dev/null +++ b/canvas/source/cairo/cairo_canvashelper.cxx @@ -0,0 +1,2047 @@ +/* -*- 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 <sal/log.hxx> + +#include <algorithm> +#include <tuple> + +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/polygon/b2dpolygon.hxx> +#include <basegfx/polygon/b2dpolypolygon.hxx> +#include <basegfx/utils/canvastools.hxx> +#include <basegfx/utils/keystoplerp.hxx> +#include <basegfx/utils/lerp.hxx> +#include <com/sun/star/rendering/ColorComponentTag.hpp> +#include <com/sun/star/rendering/ColorSpaceType.hpp> +#include <com/sun/star/rendering/CompositeOperation.hpp> +#include <com/sun/star/rendering/IntegerBitmapLayout.hpp> +#include <com/sun/star/rendering/PathCapType.hpp> +#include <com/sun/star/rendering/PathJoinType.hpp> +#include <com/sun/star/rendering/RenderingIntent.hpp> +#include <com/sun/star/rendering/TexturingMode.hpp> +#include <com/sun/star/rendering/XIntegerBitmapColorSpace.hpp> +#include <com/sun/star/util/Endianness.hpp> +#include <comphelper/sequence.hxx> +#include <cppuhelper/implbase.hxx> +#include <rtl/math.hxx> +#include <tools/diagnose_ex.h> +#include <vcl/bitmapex.hxx> +#include <vcl/BitmapTools.hxx> +#include <vcl/canvastools.hxx> +#include <vcl/virdev.hxx> + +#include <canvas/canvastools.hxx> +#include <parametricpolypolygon.hxx> +#include <cairo.h> + +#include "cairo_cachedbitmap.hxx" +#include "cairo_canvasbitmap.hxx" +#include "cairo_canvashelper.hxx" + +using namespace ::cairo; +using namespace ::com::sun::star; + +namespace cairocanvas +{ + CanvasHelper::CanvasHelper() : + mpSurfaceProvider(nullptr), + mpDevice(nullptr), + mbHaveAlpha() + { + } + + void CanvasHelper::disposing() + { + mpSurface.reset(); + mpCairo.reset(); + mpVirtualDevice.disposeAndClear(); + mpDevice = nullptr; + mpSurfaceProvider = nullptr; + } + + void CanvasHelper::init( const ::basegfx::B2ISize& rSizePixel, + SurfaceProvider& rSurfaceProvider, + rendering::XGraphicDevice* pDevice ) + { + maSize = rSizePixel; + mpSurfaceProvider = &rSurfaceProvider; + mpDevice = pDevice; + } + + void CanvasHelper::setSize( const ::basegfx::B2ISize& rSize ) + { + maSize = rSize; + } + + void CanvasHelper::setSurface( const SurfaceSharedPtr& pSurface, bool bHasAlpha ) + { + mbHaveAlpha = bHasAlpha; + mpVirtualDevice.disposeAndClear(); + mpSurface = pSurface; + mpCairo = pSurface->getCairo(); + } + + static void setColor( cairo_t* pCairo, + const uno::Sequence<double>& rColor ) + { + if( rColor.getLength() > 3 ) + { + cairo_set_source_rgba( pCairo, + rColor[0], + rColor[1], + rColor[2], + rColor[3] ); + } + else if( rColor.getLength() == 3 ) + cairo_set_source_rgb( pCairo, + rColor[0], + rColor[1], + rColor[2] ); + } + + void CanvasHelper::useStates( const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + bool bSetColor ) + { + cairo_matrix_t aViewMatrix; + cairo_matrix_t aRenderMatrix; + cairo_matrix_t aCombinedMatrix; + + cairo_matrix_init( &aViewMatrix, + viewState.AffineTransform.m00, viewState.AffineTransform.m10, viewState.AffineTransform.m01, + viewState.AffineTransform.m11, viewState.AffineTransform.m02, viewState.AffineTransform.m12); + cairo_matrix_init( &aRenderMatrix, + renderState.AffineTransform.m00, renderState.AffineTransform.m10, renderState.AffineTransform.m01, + renderState.AffineTransform.m11, renderState.AffineTransform.m02, renderState.AffineTransform.m12); + cairo_matrix_multiply( &aCombinedMatrix, &aRenderMatrix, &aViewMatrix); + + if( viewState.Clip.is() ) + { + SAL_INFO( "canvas.cairo", "view clip"); + + aViewMatrix.x0 = basegfx::fround( aViewMatrix.x0 ); + aViewMatrix.y0 = basegfx::fround( aViewMatrix.y0 ); + cairo_set_matrix( mpCairo.get(), &aViewMatrix ); + doPolyPolygonPath( viewState.Clip, Clip ); + } + + aCombinedMatrix.x0 = basegfx::fround( aCombinedMatrix.x0 ); + aCombinedMatrix.y0 = basegfx::fround( aCombinedMatrix.y0 ); + cairo_set_matrix( mpCairo.get(), &aCombinedMatrix ); + + if( renderState.Clip.is() ) + { + SAL_INFO( "canvas.cairo", "render clip BEGIN"); + + doPolyPolygonPath( renderState.Clip, Clip ); + SAL_INFO( "canvas.cairo", "render clip END"); + } + + if( bSetColor ) + setColor(mpCairo.get(),renderState.DeviceColor); + + cairo_operator_t compositingMode( CAIRO_OPERATOR_OVER ); + switch( renderState.CompositeOperation ) + { + case rendering::CompositeOperation::CLEAR: + compositingMode = CAIRO_OPERATOR_CLEAR; + break; + case rendering::CompositeOperation::SOURCE: + compositingMode = CAIRO_OPERATOR_SOURCE; + break; + case rendering::CompositeOperation::DESTINATION: + compositingMode = CAIRO_OPERATOR_DEST; + break; + case rendering::CompositeOperation::OVER: + compositingMode = CAIRO_OPERATOR_OVER; + break; + case rendering::CompositeOperation::UNDER: + compositingMode = CAIRO_OPERATOR_DEST; + break; + case rendering::CompositeOperation::INSIDE: + compositingMode = CAIRO_OPERATOR_IN; + break; + case rendering::CompositeOperation::INSIDE_REVERSE: + compositingMode = CAIRO_OPERATOR_OUT; + break; + case rendering::CompositeOperation::OUTSIDE: + compositingMode = CAIRO_OPERATOR_DEST_OVER; + break; + case rendering::CompositeOperation::OUTSIDE_REVERSE: + compositingMode = CAIRO_OPERATOR_DEST_OUT; + break; + case rendering::CompositeOperation::ATOP: + compositingMode = CAIRO_OPERATOR_ATOP; + break; + case rendering::CompositeOperation::ATOP_REVERSE: + compositingMode = CAIRO_OPERATOR_DEST_ATOP; + break; + case rendering::CompositeOperation::XOR: + compositingMode = CAIRO_OPERATOR_XOR; + break; + case rendering::CompositeOperation::ADD: + compositingMode = CAIRO_OPERATOR_ADD; + break; + case rendering::CompositeOperation::SATURATE: + compositingMode = CAIRO_OPERATOR_SATURATE; + break; + } + cairo_set_operator( mpCairo.get(), compositingMode ); + } + + void CanvasHelper::clear() + { + SAL_INFO( "canvas.cairo", "clear whole area: " << maSize.getX() << " x " << maSize.getY() ); + + if( !mpCairo ) + return; + + cairo_save( mpCairo.get() ); + + cairo_identity_matrix( mpCairo.get() ); + // this does not really differ from all-zero, as cairo + // internally converts to premultiplied alpha. but anyway, + // this keeps it consistent with the other canvas impls + if( mbHaveAlpha ) + cairo_set_source_rgba( mpCairo.get(), 1.0, 1.0, 1.0, 0.0 ); + else + cairo_set_source_rgb( mpCairo.get(), 1.0, 1.0, 1.0 ); + cairo_set_operator( mpCairo.get(), CAIRO_OPERATOR_SOURCE ); + + cairo_rectangle( mpCairo.get(), 0, 0, maSize.getX(), maSize.getY() ); + cairo_fill( mpCairo.get() ); + + cairo_restore( mpCairo.get() ); + } + + void CanvasHelper::drawLine( const rendering::XCanvas* /*pCanvas*/, + const geometry::RealPoint2D& aStartPoint, + const geometry::RealPoint2D& aEndPoint, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + if( !mpCairo ) + return; + + cairo_save( mpCairo.get() ); + + cairo_set_line_width( mpCairo.get(), 1 ); + + useStates( viewState, renderState, true ); + + cairo_move_to( mpCairo.get(), aStartPoint.X + 0.5, aStartPoint.Y + 0.5 ); + cairo_line_to( mpCairo.get(), aEndPoint.X + 0.5, aEndPoint.Y + 0.5 ); + cairo_stroke( mpCairo.get() ); + + cairo_restore( mpCairo.get() ); + } + + void CanvasHelper::drawBezier( const rendering::XCanvas* , + const geometry::RealBezierSegment2D& aBezierSegment, + const geometry::RealPoint2D& aEndPoint, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + if( !mpCairo ) + return; + + cairo_save( mpCairo.get() ); + + cairo_set_line_width( mpCairo.get(), 1 ); + + useStates( viewState, renderState, true ); + + cairo_move_to( mpCairo.get(), aBezierSegment.Px + 0.5, aBezierSegment.Py + 0.5 ); + // tdf#99165 correction of control points not needed here, only hairlines drawn + // (see cairo_set_line_width above) + cairo_curve_to( mpCairo.get(), + aBezierSegment.C1x + 0.5, aBezierSegment.C1y + 0.5, + aBezierSegment.C2x + 0.5, aBezierSegment.C2y + 0.5, + aEndPoint.X + 0.5, aEndPoint.Y + 0.5 ); + cairo_stroke( mpCairo.get() ); + + cairo_restore( mpCairo.get() ); + } + +constexpr OUStringLiteral PARAMETRICPOLYPOLYGON_IMPLEMENTATION_NAME = u"Canvas::ParametricPolyPolygon"; + + /** surfaceFromXBitmap Create a surface from XBitmap + * @param xBitmap bitmap image that will be used for the surface + * @param bHasAlpha will be set to true if resulting surface has alpha + * + * This is a helper function for the other surfaceFromXBitmap(). + * This function tries to create surface from xBitmap by checking if xBitmap is CanvasBitmap or SpriteCanvas. + * + * @return created surface or NULL + **/ + static SurfaceSharedPtr surfaceFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap ) + { + CanvasBitmap* pBitmapImpl = dynamic_cast< CanvasBitmap* >( xBitmap.get() ); + if( pBitmapImpl ) + return pBitmapImpl->getSurface(); + + SurfaceProvider* pSurfaceProvider = dynamic_cast<SurfaceProvider*>( xBitmap.get() ); + if( pSurfaceProvider ) + return pSurfaceProvider->getSurface(); + + return SurfaceSharedPtr(); + } + + static ::BitmapEx bitmapExFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap ) + { + // TODO(F1): Add support for floating point bitmap formats + uno::Reference<rendering::XIntegerReadOnlyBitmap> xIntBmp(xBitmap, + uno::UNO_QUERY_THROW); + ::BitmapEx aBmpEx = vcl::unotools::bitmapExFromXBitmap(xIntBmp); + if( !aBmpEx.IsEmpty() ) + return aBmpEx; + + // TODO(F1): extract pixel from XBitmap interface + ENSURE_OR_THROW( false, + "bitmapExFromXBitmap(): could not extract BitmapEx" ); + + return ::BitmapEx(); + } + + /** surfaceFromXBitmap Create a surface from XBitmap + * @param xBitmap bitmap image that will be used for the surface + * @param rDevice reference to the device into which we want to draw + * @param data will be filled with alpha data, if xBitmap is alpha/transparent image + * @param bHasAlpha will be set to true if resulting surface has alpha + * + * This function tries various methods for creating a surface from xBitmap. It also uses + * the helper function surfaceFromXBitmap( xBitmap, bHasAlpha ) + * + * @return created surface or NULL + **/ + static SurfaceSharedPtr surfaceFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap, const SurfaceProviderRef& rSurfaceProvider, unsigned char*& data, bool& bHasAlpha ) + { + bHasAlpha = xBitmap->hasAlpha(); + SurfaceSharedPtr pSurface = surfaceFromXBitmap( xBitmap ); + if( pSurface ) + data = nullptr; + else + { + ::BitmapEx aBmpEx = bitmapExFromXBitmap(xBitmap); + ::Bitmap aBitmap = aBmpEx.GetBitmap(); + + // there's no pixmap for alpha bitmap. we might still + // use rgb pixmap and only access alpha pixels the + // slow way. now we just speedup rgb bitmaps + if( !aBmpEx.IsAlpha() ) + { + pSurface = rSurfaceProvider->createSurface( aBitmap ); + data = nullptr; + bHasAlpha = false; + } + + if( !pSurface ) + { + tools::Long nWidth; + tools::Long nHeight; + vcl::bitmap::CanvasCairoExtractBitmapData(aBmpEx, aBitmap, data, bHasAlpha, nWidth, nHeight); + + pSurface = rSurfaceProvider->getOutputDevice()->CreateSurface( + CairoSurfaceSharedPtr( + cairo_image_surface_create_for_data( + data, + bHasAlpha ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24, + nWidth, nHeight, nWidth*4 ), + &cairo_surface_destroy) ); + + SAL_INFO( "canvas.cairo","image: " << nWidth << " x " << nHeight << " alpha: " << bHasAlpha); + } + } + + return pSurface; + } + + static void addColorStops( cairo_pattern_t* pPattern, const uno::Sequence< uno::Sequence< double > >& rColors, const uno::Sequence< double >& rStops, bool bReverseStops ) + { + int i; + + OSL_ASSERT( rColors.getLength() == rStops.getLength() ); + + for( i = 0; i < rColors.getLength(); i++ ) + { + const uno::Sequence< double >& rColor( rColors[i] ); + float stop = bReverseStops ? 1 - rStops[i] : rStops[i]; + if( rColor.getLength() == 3 ) + cairo_pattern_add_color_stop_rgb( pPattern, stop, rColor[0], rColor[1], rColor[2] ); + else if( rColor.getLength() == 4 ) + { + double alpha = rColor[3]; + // cairo expects premultiplied alpha + cairo_pattern_add_color_stop_rgba( pPattern, stop, rColor[0]*alpha, rColor[1]*alpha, rColor[2]*alpha, alpha ); + } + } + } + + static uno::Sequence<double> lerp(const uno::Sequence<double>& rLeft, const uno::Sequence<double>& rRight, double fAlpha) + { + if( rLeft.getLength() == 3 ) + { + return + { + basegfx::utils::lerp(rLeft[0],rRight[0],fAlpha), + basegfx::utils::lerp(rLeft[1],rRight[1],fAlpha), + basegfx::utils::lerp(rLeft[2],rRight[2],fAlpha) + }; + } + else if( rLeft.getLength() == 4 ) + { + return + { + basegfx::utils::lerp(rLeft[0],rRight[0],fAlpha), + basegfx::utils::lerp(rLeft[1],rRight[1],fAlpha), + basegfx::utils::lerp(rLeft[2],rRight[2],fAlpha), + basegfx::utils::lerp(rLeft[3],rRight[3],fAlpha) + }; + } + + return {}; + } + + static cairo_pattern_t* patternFromParametricPolyPolygon( ::canvas::ParametricPolyPolygon const & rPolygon ) + { + cairo_pattern_t* pPattern = nullptr; + const ::canvas::ParametricPolyPolygon::Values aValues = rPolygon.getValues(); + double x0, x1, y0, y1, cx, cy, r0, r1; + + switch( aValues.meType ) + { + case ::canvas::ParametricPolyPolygon::GradientType::Linear: + x0 = 0; + y0 = 0; + x1 = 1; + y1 = 0; + pPattern = cairo_pattern_create_linear( x0, y0, x1, y1 ); + addColorStops( pPattern, aValues.maColors, aValues.maStops, false ); + break; + + case ::canvas::ParametricPolyPolygon::GradientType::Elliptical: + cx = 0; + cy = 0; + r0 = 0; + r1 = 1; + + pPattern = cairo_pattern_create_radial( cx, cy, r0, cy, cy, r1 ); + addColorStops( pPattern, aValues.maColors, aValues.maStops, true ); + break; + default: + break; + } + + return pPattern; + } + + static void doOperation( Operation aOperation, + cairo_t* pCairo, + const uno::Sequence< rendering::Texture >* pTextures, + const SurfaceProviderRef& pDevice, + const basegfx::B2DRange& rBounds ) + { + switch( aOperation ) + { + case Fill: + /* TODO: multitexturing */ + if( pTextures ) + { + const css::rendering::Texture& aTexture ( (*pTextures)[0] ); + if( aTexture.Bitmap.is() ) + { + unsigned char* data = nullptr; + bool bHasAlpha = false; + SurfaceSharedPtr pSurface = surfaceFromXBitmap( (*pTextures)[0].Bitmap, pDevice, data, bHasAlpha ); + + if( pSurface ) + { + cairo_pattern_t* pPattern; + + cairo_save( pCairo ); + + css::geometry::AffineMatrix2D aTransform( aTexture.AffineTransform ); + cairo_matrix_t aScaleMatrix, aTextureMatrix, aScaledTextureMatrix; + + cairo_matrix_init( &aTextureMatrix, + aTransform.m00, aTransform.m10, aTransform.m01, + aTransform.m11, aTransform.m02, aTransform.m12); + + geometry::IntegerSize2D aSize = aTexture.Bitmap->getSize(); + + cairo_matrix_init_scale( &aScaleMatrix, 1.0/aSize.Width, 1.0/aSize.Height ); + cairo_matrix_multiply( &aScaledTextureMatrix, &aTextureMatrix, &aScaleMatrix ); + cairo_matrix_invert( &aScaledTextureMatrix ); + + // we don't care about repeat mode yet, so the workaround is disabled for now + pPattern = cairo_pattern_create_for_surface( pSurface->getCairoSurface().get() ); + + if( aTexture.RepeatModeX == rendering::TexturingMode::REPEAT && + aTexture.RepeatModeY == rendering::TexturingMode::REPEAT ) + { + cairo_pattern_set_extend( pPattern, CAIRO_EXTEND_REPEAT ); + } + else if ( aTexture.RepeatModeX == rendering::TexturingMode::NONE && + aTexture.RepeatModeY == rendering::TexturingMode::NONE ) + { + cairo_pattern_set_extend( pPattern, CAIRO_EXTEND_NONE ); + } + else if ( aTexture.RepeatModeX == rendering::TexturingMode::CLAMP && + aTexture.RepeatModeY == rendering::TexturingMode::CLAMP ) + { + cairo_pattern_set_extend( pPattern, CAIRO_EXTEND_PAD ); + } + + aScaledTextureMatrix.x0 = basegfx::fround( aScaledTextureMatrix.x0 ); + aScaledTextureMatrix.y0 = basegfx::fround( aScaledTextureMatrix.y0 ); + + double x1, y1, x2, y2; + cairo_path_extents(pCairo, &x1, &y1, &x2, &y2); + aScaledTextureMatrix.x0 -= (x1 * aScaledTextureMatrix.xx); + aScaledTextureMatrix.y0 -= (y1 * aScaledTextureMatrix.yy); + + cairo_pattern_set_matrix( pPattern, &aScaledTextureMatrix ); + + cairo_set_source( pCairo, pPattern ); + if( !bHasAlpha ) + cairo_set_operator( pCairo, CAIRO_OPERATOR_SOURCE ); + cairo_fill( pCairo ); + + cairo_restore( pCairo ); + + cairo_pattern_destroy( pPattern ); + } + + if( data ) + free( data ); + } + else if( aTexture.Gradient.is() ) + { + uno::Reference< lang::XServiceInfo > xRef( aTexture.Gradient, uno::UNO_QUERY ); + + SAL_INFO( "canvas.cairo", "gradient fill" ); + if( xRef.is() && xRef->getImplementationName() == PARAMETRICPOLYPOLYGON_IMPLEMENTATION_NAME ) + { + // TODO(Q1): Maybe use dynamic_cast here + + // TODO(E1): Return value + // TODO(F1): FillRule + SAL_INFO( "canvas.cairo", "known implementation" ); + + ::canvas::ParametricPolyPolygon* pPolyImpl = static_cast< ::canvas::ParametricPolyPolygon* >( aTexture.Gradient.get() ); + css::geometry::AffineMatrix2D aTransform( aTexture.AffineTransform ); + cairo_matrix_t aTextureMatrix; + + cairo_matrix_init( &aTextureMatrix, + aTransform.m00, aTransform.m10, aTransform.m01, + aTransform.m11, aTransform.m02, aTransform.m12); + if( pPolyImpl->getValues().meType == canvas::ParametricPolyPolygon::GradientType::Rectangular ) + { + // no general path gradient yet in cairo; emulate then + cairo_save( pCairo ); + cairo_clip( pCairo ); + + // fill bound rect with start color + cairo_rectangle( pCairo, rBounds.getMinX(), rBounds.getMinY(), + rBounds.getWidth(), rBounds.getHeight() ); + setColor(pCairo,pPolyImpl->getValues().maColors[0]); + cairo_fill(pCairo); + + cairo_transform( pCairo, &aTextureMatrix ); + + // longest line in gradient bound rect + const unsigned int nGradientSize( + static_cast<unsigned int>( + ::basegfx::B2DVector(rBounds.getMinimum() - rBounds.getMaximum()).getLength() + 1.0 ) ); + + // typical number for pixel of the same color (strip size) + const unsigned int nStripSize( nGradientSize < 50 ? 2 : 4 ); + + // use at least three steps, and at utmost the number of color + // steps + const unsigned int nStepCount( + std::max( + 3U, + std::min( + nGradientSize / nStripSize, + 128U )) + 1 ); + + const uno::Sequence<double>* pColors=&pPolyImpl->getValues().maColors[0]; + basegfx::utils::KeyStopLerp aLerper(pPolyImpl->getValues().maStops); + for( unsigned int i=1; i<nStepCount; ++i ) + { + const double fT( i/double(nStepCount) ); + + std::ptrdiff_t nIndex; + double fAlpha; + std::tie(nIndex,fAlpha)=aLerper.lerp(fT); + + setColor(pCairo, lerp(pColors[nIndex], pColors[nIndex+1], fAlpha)); + cairo_rectangle( pCairo, -1+fT, -1+fT, 2-2*fT, 2-2*fT ); + cairo_fill(pCairo); + } + + cairo_restore( pCairo ); + } + else + { + cairo_pattern_t* pPattern = patternFromParametricPolyPolygon( *pPolyImpl ); + + if( pPattern ) + { + SAL_INFO( "canvas.cairo", "filling with pattern" ); + + cairo_save( pCairo ); + + cairo_transform( pCairo, &aTextureMatrix ); + cairo_set_source( pCairo, pPattern ); + cairo_fill( pCairo ); + cairo_restore( pCairo ); + + cairo_pattern_destroy( pPattern ); + } + } + } + } + } + else + cairo_fill( pCairo ); + SAL_INFO( "canvas.cairo", "fill"); + break; + case Stroke: + cairo_stroke( pCairo ); + SAL_INFO( "canvas.cairo", "stroke"); + break; + case Clip: + cairo_clip( pCairo ); + SAL_INFO( "canvas.cairo", "clip"); + break; + } + } + + static void clipNULL( cairo_t *pCairo ) + { + SAL_INFO( "canvas.cairo", "clipNULL"); + cairo_matrix_t aOrigMatrix, aIdentityMatrix; + + /* we set identity matrix here to overcome bug in cairo 0.9.2 + where XCreatePixmap is called with zero width and height. + + it also reaches faster path in cairo clipping code. + */ + cairo_matrix_init_identity( &aIdentityMatrix ); + cairo_get_matrix( pCairo, &aOrigMatrix ); + cairo_set_matrix( pCairo, &aIdentityMatrix ); + + cairo_reset_clip( pCairo ); + cairo_rectangle( pCairo, 0, 0, 1, 1 ); + cairo_clip( pCairo ); + cairo_rectangle( pCairo, 2, 0, 1, 1 ); + cairo_clip( pCairo ); + + /* restore the original matrix */ + cairo_set_matrix( pCairo, &aOrigMatrix ); + } + + void doPolyPolygonImplementation( const ::basegfx::B2DPolyPolygon& aPolyPolygon, + Operation aOperation, + cairo_t* pCairo, + const uno::Sequence< rendering::Texture >* pTextures, + const SurfaceProviderRef& pDevice, + rendering::FillRule eFillrule ) + { + if( pTextures ) + ENSURE_ARG_OR_THROW( pTextures->hasElements(), + "CanvasHelper::fillTexturedPolyPolygon: empty texture sequence"); + + bool bOpToDo = false; + cairo_matrix_t aOrigMatrix, aIdentityMatrix; + double nX, nY, nBX, nBY, nAX, nAY, nLastX(0.0), nLastY(0.0); + + cairo_get_matrix( pCairo, &aOrigMatrix ); + cairo_matrix_init_identity( &aIdentityMatrix ); + cairo_set_matrix( pCairo, &aIdentityMatrix ); + + cairo_set_fill_rule( pCairo, + eFillrule == rendering::FillRule_EVEN_ODD ? + CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING ); + + for( sal_uInt32 nPolygonIndex = 0; nPolygonIndex < aPolyPolygon.count(); nPolygonIndex++ ) + { + const ::basegfx::B2DPolygon& aPolygon( aPolyPolygon.getB2DPolygon( nPolygonIndex ) ); + const sal_uInt32 nPointCount( aPolygon.count() ); + // to correctly render closed curves, need to output first + // point twice (so output one additional point) + const sal_uInt32 nExtendedPointCount( nPointCount + + int(aPolygon.isClosed() && aPolygon.areControlPointsUsed()) ); + + if( nPointCount > 1) + { + bool bIsBezier = aPolygon.areControlPointsUsed(); + ::basegfx::B2DPoint aA, aB, aP; + + for( sal_uInt32 j=0; j < nExtendedPointCount; j++ ) + { + aP = aPolygon.getB2DPoint( j % nPointCount ); + + nX = aP.getX(); + nY = aP.getY(); + cairo_matrix_transform_point( &aOrigMatrix, &nX, &nY ); + + if (!bIsBezier && aOperation == Clip) + { + nX = basegfx::fround( nX ); + nY = basegfx::fround( nY ); + } + + if( aOperation == Stroke ) + { + nX += 0.5; + nY += 0.5; + } + + if( j==0 ) + { + cairo_move_to( pCairo, nX, nY ); + SAL_INFO( "canvas.cairo", "move to " << nX << "," << nY ); + } + else + { + if( bIsBezier ) + { + aA = aPolygon.getNextControlPoint( (j-1) % nPointCount ); + aB = aPolygon.getPrevControlPoint( j % nPointCount ); + + nAX = aA.getX(); + nAY = aA.getY(); + nBX = aB.getX(); + nBY = aB.getY(); + + cairo_matrix_transform_point( &aOrigMatrix, &nAX, &nAY ); + cairo_matrix_transform_point( &aOrigMatrix, &nBX, &nBY ); + + if( aOperation == Stroke ) + { + nAX += 0.5; + nAY += 0.5; + nBX += 0.5; + nBY += 0.5; + } + + // tdf#99165 if the control points are 'empty', create the mathematical + // correct replacement ones to avoid problems with the graphical sub-system + // tdf#101026 The 1st attempt to create a mathematically correct replacement control + // vector was wrong. Best alternative is one as close as possible which means short. + if (basegfx::fTools::equal(nAX, nLastX) && basegfx::fTools::equal(nAY, nLastY)) + { + nAX = nLastX + ((nBX - nLastX) * 0.0005); + nAY = nLastY + ((nBY - nLastY) * 0.0005); + } + + if(basegfx::fTools::equal(nBX, nX) && basegfx::fTools::equal(nBY, nY)) + { + nBX = nX + ((nAX - nX) * 0.0005); + nBY = nY + ((nAY - nY) * 0.0005); + } + + cairo_curve_to( pCairo, nAX, nAY, nBX, nBY, nX, nY ); + } + else + { + cairo_line_to( pCairo, nX, nY ); + SAL_INFO( "canvas.cairo", "line to " << nX << "," << nY ); + } + bOpToDo = true; + } + + nLastX = nX; + nLastY = nY; + } + + if( aPolygon.isClosed() ) + cairo_close_path( pCairo ); + + } + else + { + SAL_INFO( "canvas.cairo", "empty polygon for op: " << aOperation ); + if( aOperation == Clip ) + { + clipNULL( pCairo ); + + return; + } + } + } + + if( aOperation == Fill && pTextures ) + { + cairo_set_matrix( pCairo, &aOrigMatrix ); + doOperation( aOperation, pCairo, pTextures, pDevice, aPolyPolygon.getB2DRange() ); + cairo_set_matrix( pCairo, &aIdentityMatrix ); + } + + if( bOpToDo && ( aOperation != Fill || !pTextures ) ) + doOperation( aOperation, pCairo, pTextures, pDevice, aPolyPolygon.getB2DRange() ); + + cairo_set_matrix( pCairo, &aOrigMatrix ); + + if( aPolyPolygon.count() == 0 && aOperation == Clip ) + clipNULL( pCairo ); + } + + void CanvasHelper::doPolyPolygonPath( const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + Operation aOperation, + bool bNoLineJoin, + const uno::Sequence< rendering::Texture >* pTextures ) const + { + const ::basegfx::B2DPolyPolygon& rPolyPoly( + ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(xPolyPolygon) ); + + cairo_t* pCairo = mpCairo.get(); + + if(bNoLineJoin && aOperation == Stroke) + { + // emulate rendering::PathJoinType::NONE by painting single edges + for(sal_uInt32 a(0); a < rPolyPoly.count(); a++) + { + const basegfx::B2DPolygon& aCandidate(rPolyPoly.getB2DPolygon(a)); + const sal_uInt32 nPointCount(aCandidate.count()); + + if(nPointCount) + { + const sal_uInt32 nEdgeCount(aCandidate.isClosed() ? nPointCount: nPointCount - 1); + basegfx::B2DPolygon aEdge; + aEdge.append(aCandidate.getB2DPoint(0)); + aEdge.append(basegfx::B2DPoint(0.0, 0.0)); + + for(sal_uInt32 b(0); b < nEdgeCount; b++) + { + const sal_uInt32 nNextIndex((b + 1) % nPointCount); + aEdge.setB2DPoint(1, aCandidate.getB2DPoint(nNextIndex)); + aEdge.setNextControlPoint(0, aCandidate.getNextControlPoint(b % nPointCount)); + aEdge.setPrevControlPoint(1, aCandidate.getPrevControlPoint(nNextIndex)); + + doPolyPolygonImplementation( basegfx::B2DPolyPolygon(aEdge), + aOperation, + pCairo, pTextures, + mpSurfaceProvider, + xPolyPolygon->getFillRule() ); + + // prepare next step + aEdge.setB2DPoint(0, aEdge.getB2DPoint(1)); + } + } + } + } + else + { + doPolyPolygonImplementation( rPolyPoly, aOperation, + pCairo, pTextures, + mpSurfaceProvider, + xPolyPolygon->getFillRule() ); + } + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawPolyPolygon( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { +#ifdef CAIRO_CANVAS_PERF_TRACE + struct timespec aTimer; + mxDevice->startPerfTrace( &aTimer ); +#endif + + if( mpCairo ) + { + cairo_save( mpCairo.get() ); + + cairo_set_line_width( mpCairo.get(), 1 ); + + useStates( viewState, renderState, true ); + doPolyPolygonPath( xPolyPolygon, Stroke ); + + cairo_restore( mpCairo.get() ); + } + else + SAL_INFO( "canvas.cairo", "CanvasHelper called after it was disposed"); + +#ifdef CAIRO_CANVAS_PERF_TRACE + mxDevice->stopPerfTrace( &aTimer, "drawPolyPolygon" ); +#endif + + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::strokePolyPolygon( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const rendering::StrokeAttributes& strokeAttributes ) + { +#ifdef CAIRO_CANVAS_PERF_TRACE + struct timespec aTimer; + mxDevice->startPerfTrace( &aTimer ); +#endif + + if( mpCairo ) + { + cairo_save( mpCairo.get() ); + + useStates( viewState, renderState, true ); + + cairo_matrix_t aMatrix; + cairo_get_matrix( mpCairo.get(), &aMatrix ); + double scaleFactorX = 1; + double scaleFactorY = 0; + cairo_matrix_transform_distance( &aMatrix, &scaleFactorX, &scaleFactorY ); + double scaleFactor = basegfx::B2DVector( scaleFactorX, scaleFactorY ).getLength(); + cairo_set_line_width( mpCairo.get(), strokeAttributes.StrokeWidth * scaleFactor ); + + cairo_set_miter_limit( mpCairo.get(), strokeAttributes.MiterLimit ); + + // FIXME: cairo doesn't handle end cap so far (rodo) + switch( strokeAttributes.StartCapType ) + { + case rendering::PathCapType::BUTT: + cairo_set_line_cap( mpCairo.get(), CAIRO_LINE_CAP_BUTT ); + break; + case rendering::PathCapType::ROUND: + cairo_set_line_cap( mpCairo.get(), CAIRO_LINE_CAP_ROUND ); + break; + case rendering::PathCapType::SQUARE: + cairo_set_line_cap( mpCairo.get(), CAIRO_LINE_CAP_SQUARE ); + break; + } + + bool bNoLineJoin(false); + + switch( strokeAttributes.JoinType ) + { + case rendering::PathJoinType::NONE: + bNoLineJoin = true; + [[fallthrough]]; // cairo doesn't have join type NONE so we use MITER as it's pretty close + case rendering::PathJoinType::MITER: + cairo_set_line_join( mpCairo.get(), CAIRO_LINE_JOIN_MITER ); + break; + case rendering::PathJoinType::ROUND: + cairo_set_line_join( mpCairo.get(), CAIRO_LINE_JOIN_ROUND ); + break; + case rendering::PathJoinType::BEVEL: + cairo_set_line_join( mpCairo.get(), CAIRO_LINE_JOIN_BEVEL ); + break; + } + + //tdf#103026 If the scaling is 0, then all dashes become zero so + //cairo will set the cairo_t status to CAIRO_STATUS_INVALID_DASH + //and no further drawing will occur + if (strokeAttributes.DashArray.hasElements() && scaleFactor > 0.0) + { + auto aDashArray(comphelper::sequenceToContainer<std::vector<double>>(strokeAttributes.DashArray)); + for (auto& rDash : aDashArray) + rDash *= scaleFactor; + cairo_set_dash(mpCairo.get(), aDashArray.data(), aDashArray.size(), 0); + } + + // TODO(rodo) use LineArray of strokeAttributes + + doPolyPolygonPath( xPolyPolygon, Stroke, bNoLineJoin ); + + cairo_restore( mpCairo.get() ); + } + else + SAL_INFO( "canvas.cairo", "CanvasHelper called after it was disposed"); + +#ifdef CAIRO_CANVAS_PERF_TRACE + mxDevice->stopPerfTrace( &aTimer, "strokePolyPolygon" ); +#endif + + // TODO(P1): Provide caching here. + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::strokeTexturedPolyPolygon( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const uno::Sequence< rendering::Texture >& /*textures*/, + const rendering::StrokeAttributes& /*strokeAttributes*/ ) + { + // TODO + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::strokeTextureMappedPolyPolygon( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const uno::Sequence< rendering::Texture >& /*textures*/, + const uno::Reference< geometry::XMapping2D >& /*xMapping*/, + const rendering::StrokeAttributes& /*strokeAttributes*/ ) + { + // TODO + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XPolyPolygon2D > CanvasHelper::queryStrokeShapes( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const rendering::StrokeAttributes& /*strokeAttributes*/ ) + { + // TODO + return uno::Reference< rendering::XPolyPolygon2D >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::fillPolyPolygon( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { +#ifdef CAIRO_CANVAS_PERF_TRACE + struct timespec aTimer; + mxDevice->startPerfTrace( &aTimer ); +#endif + + if( mpCairo ) + { + cairo_save( mpCairo.get() ); + + useStates( viewState, renderState, true ); + doPolyPolygonPath( xPolyPolygon, Fill ); + + cairo_restore( mpCairo.get() ); + } + else + SAL_INFO( "canvas.cairo", "CanvasHelper called after it was disposed"); + +#ifdef CAIRO_CANVAS_PERF_TRACE + mxDevice->stopPerfTrace( &aTimer, "fillPolyPolygon" ); +#endif + + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::fillTexturedPolyPolygon( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const uno::Sequence< rendering::Texture >& textures ) + { + if( mpCairo ) + { + cairo_save( mpCairo.get() ); + + useStates( viewState, renderState, true ); + doPolyPolygonPath( xPolyPolygon, Fill, false, &textures ); + + cairo_restore( mpCairo.get() ); + } + + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::fillTextureMappedPolyPolygon( const rendering::XCanvas* , + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const uno::Sequence< rendering::Texture >& /*textures*/, + const uno::Reference< geometry::XMapping2D >& /*xMapping*/ ) + { + // TODO + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::implDrawBitmapSurface( const rendering::XCanvas* pCanvas, + const SurfaceSharedPtr& pInputSurface, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const geometry::IntegerSize2D& rSize, + bool bModulateColors, + bool bHasAlpha ) + { + SurfaceSharedPtr pSurface=pInputSurface; + uno::Reference< rendering::XCachedPrimitive > rv; + geometry::IntegerSize2D aBitmapSize = rSize; + + if( mpCairo ) + { + cairo_save( mpCairo.get() ); + + cairo_rectangle( mpCairo.get(), 0, 0, maSize.getX(), maSize.getY() ); + cairo_clip( mpCairo.get() ); + + useStates( viewState, renderState, true ); + + cairo_matrix_t aMatrix; + + cairo_get_matrix( mpCairo.get(), &aMatrix ); + if( ! ::rtl::math::approxEqual( aMatrix.xx, 1 ) && + ! ::rtl::math::approxEqual( aMatrix.yy, 1 ) && + ::rtl::math::approxEqual( aMatrix.x0, 0 ) && + ::rtl::math::approxEqual( aMatrix.y0, 0 ) && + basegfx::fround( rSize.Width * aMatrix.xx ) > 8 && + basegfx::fround( rSize.Height* aMatrix.yy ) > 8 ) + { + double dWidth, dHeight; + + dWidth = basegfx::fround( rSize.Width * aMatrix.xx ); + dHeight = basegfx::fround( rSize.Height* aMatrix.yy ); + aBitmapSize.Width = static_cast<sal_Int32>( dWidth ); + aBitmapSize.Height = static_cast<sal_Int32>( dHeight ); + + SurfaceSharedPtr pScaledSurface = mpSurfaceProvider->createSurface( + ::basegfx::B2ISize( aBitmapSize.Width, aBitmapSize.Height ), + bHasAlpha ? CAIRO_CONTENT_COLOR_ALPHA : CAIRO_CONTENT_COLOR ); + CairoSharedPtr pCairo = pScaledSurface->getCairo(); + + cairo_set_operator( pCairo.get(), CAIRO_OPERATOR_SOURCE ); + // add 0.5px to size to avoid rounding errors in cairo, leading sometimes to random data on the image right/bottom borders + cairo_scale( pCairo.get(), (dWidth+0.5)/rSize.Width, (dHeight+0.5)/rSize.Height ); + cairo_set_source_surface( pCairo.get(), pSurface->getCairoSurface().get(), 0, 0 ); + cairo_paint( pCairo.get() ); + + pSurface = pScaledSurface; + + aMatrix.xx = aMatrix.yy = 1; + cairo_set_matrix( mpCairo.get(), &aMatrix ); + + rv.set( + new CachedBitmap( pSurface, viewState, renderState, + // cast away const, need to + // change refcount (as this is + // ~invisible to client code, + // still logically const) + const_cast< rendering::XCanvas* >(pCanvas)) ); + } + + if( !bHasAlpha && mbHaveAlpha ) + { + double x, y, width, height; + + x = y = 0; + width = aBitmapSize.Width; + height = aBitmapSize.Height; + cairo_matrix_transform_point( &aMatrix, &x, &y ); + cairo_matrix_transform_distance( &aMatrix, &width, &height ); + + // in case the bitmap doesn't have alpha and covers whole area + // we try to change surface to plain rgb + SAL_INFO( "canvas.cairo","chance to change surface to rgb, " << x << ", " << y << ", " << width << " x " << height << " (" << maSize.getX() << " x " << maSize.getY() << ")" ); + if( x <= 0 && y <= 0 && x + width >= maSize.getX() && y + height >= maSize.getY() ) + { + SAL_INFO( "canvas.cairo","trying to change surface to rgb"); + if( mpSurfaceProvider ) { + SurfaceSharedPtr pNewSurface = mpSurfaceProvider->changeSurface(); + + if( pNewSurface ) + setSurface( pNewSurface, false ); + + // set state to new mpCairo.get() + useStates( viewState, renderState, true ); + // use the possibly modified matrix + cairo_set_matrix( mpCairo.get(), &aMatrix ); + } + } + } + + cairo_set_source_surface( mpCairo.get(), pSurface->getCairoSurface().get(), 0, 0 ); + if( !bHasAlpha && + ::rtl::math::approxEqual( aMatrix.xx, 1 ) && + ::rtl::math::approxEqual( aMatrix.yy, 1 ) && + ::rtl::math::approxEqual( aMatrix.x0, 0 ) && + ::rtl::math::approxEqual( aMatrix.y0, 0 ) ) + cairo_set_operator( mpCairo.get(), CAIRO_OPERATOR_SOURCE ); + cairo_pattern_set_extend( cairo_get_source(mpCairo.get()), CAIRO_EXTEND_PAD ); + cairo_rectangle( mpCairo.get(), 0, 0, aBitmapSize.Width, aBitmapSize.Height ); + cairo_clip( mpCairo.get() ); + + // Use cairo_matrix_transform_distance() to determine the scaling, as that works even if + // the matrix also has rotation. + double fPixelWidth = rSize.Width; + double fPixelHeight = rSize.Height; + cairo_matrix_transform_distance(&aMatrix, &fPixelWidth, &fPixelHeight); + int nPixelWidth = std::round(fPixelWidth); + int nPixelHeight = std::round(fPixelHeight); + if (std::abs(nPixelWidth) > 0 && std::abs(nPixelHeight) > 0) + { + // Only render the image if it's at least 1x1 px sized. + if (bModulateColors) + cairo_paint_with_alpha(mpCairo.get(), renderState.DeviceColor[3]); + else + { + cairo_paint(mpCairo.get()); + if (cairo_status(mpCairo.get()) != CAIRO_STATUS_SUCCESS) + { + SAL_WARN("canvas.cairo", "cairo_paint() failed: " << cairo_status_to_string( + cairo_status(mpCairo.get()))); + } + } + } + cairo_restore( mpCairo.get() ); + } + else + SAL_INFO( "canvas.cairo", "CanvasHelper called after it was disposed"); + + return rv; // uno::Reference< rendering::XCachedPrimitive >(NULL); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmap( const rendering::XCanvas* pCanvas, + const uno::Reference< rendering::XBitmap >& xBitmap, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { +#ifdef CAIRO_CANVAS_PERF_TRACE + struct timespec aTimer; + mxDevice->startPerfTrace( &aTimer ); +#endif + + uno::Reference< rendering::XCachedPrimitive > rv; + unsigned char* data = nullptr; + bool bHasAlpha = false; + SurfaceSharedPtr pSurface = surfaceFromXBitmap( xBitmap, mpSurfaceProvider, data, bHasAlpha ); + geometry::IntegerSize2D aSize = xBitmap->getSize(); + + if( pSurface ) + { + rv = implDrawBitmapSurface( pCanvas, pSurface, viewState, renderState, aSize, false, bHasAlpha ); + + if( data ) + free( data ); + } + else + rv.set(nullptr); + +#ifdef CAIRO_CANVAS_PERF_TRACE + mxDevice->stopPerfTrace( &aTimer, "drawBitmap" ); +#endif + + return rv; + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmapModulated( const rendering::XCanvas* pCanvas, + const uno::Reference< rendering::XBitmap >& xBitmap, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { +#ifdef CAIRO_CANVAS_PERF_TRACE + struct timespec aTimer; + mxDevice->startPerfTrace( &aTimer ); +#endif + + uno::Reference< rendering::XCachedPrimitive > rv; + unsigned char* data = nullptr; + bool bHasAlpha = false; + SurfaceSharedPtr pSurface = surfaceFromXBitmap( xBitmap, mpSurfaceProvider, data, bHasAlpha ); + geometry::IntegerSize2D aSize = xBitmap->getSize(); + + if( pSurface ) + { + rv = implDrawBitmapSurface( pCanvas, pSurface, viewState, renderState, aSize, true, bHasAlpha ); + + if( data ) + free( data ); + } + else + rv.set(nullptr); + +#ifdef CAIRO_CANVAS_PERF_TRACE + mxDevice->stopPerfTrace( &aTimer, "drawBitmap" ); +#endif + + return rv; + } + + + geometry::IntegerSize2D CanvasHelper::getSize() const + { + if( !mpSurfaceProvider ) + return geometry::IntegerSize2D(1, 1); // we're disposed + + return ::basegfx::unotools::integerSize2DFromB2ISize( maSize ); + } + + uno::Reference< rendering::XBitmap > CanvasHelper::getScaledBitmap( const geometry::RealSize2D& newSize, + bool /*beFast*/ ) + { +#ifdef CAIRO_CANVAS_PERF_TRACE + struct timespec aTimer; + mxDevice->startPerfTrace( &aTimer ); +#endif + + if( mpCairo ) + { + return uno::Reference< rendering::XBitmap >( new CanvasBitmap( ::basegfx::B2ISize( ::canvas::tools::roundUp( newSize.Width ), + ::canvas::tools::roundUp( newSize.Height ) ), + mpSurfaceProvider, mpDevice, false ) ); + } + else + SAL_INFO( "canvas.cairo", "CanvasHelper called after it was disposed"); + +#ifdef CAIRO_CANVAS_PERF_TRACE + mxDevice->stopPerfTrace( &aTimer, "getScaledBitmap" ); +#endif + + return uno::Reference< rendering::XBitmap >(); + } + + uno::Sequence< sal_Int8 > CanvasHelper::getData( rendering::IntegerBitmapLayout& aLayout, + const geometry::IntegerRectangle2D& rect ) + { + if( mpCairo ) + { + const sal_Int32 nWidth( rect.X2 - rect.X1 ); + const sal_Int32 nHeight( rect.Y2 - rect.Y1 ); + const cairo_format_t eFormat( mbHaveAlpha ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24 ); + uno::Sequence< sal_Int8 > aRes( 4*nWidth*nHeight ); + sal_Int8* pData = aRes.getArray(); + cairo_surface_t* pImageSurface = cairo_image_surface_create_for_data( reinterpret_cast<unsigned char *>(pData), + eFormat, + nWidth, nHeight, 4*nWidth ); + cairo_t* pCairo = cairo_create( pImageSurface ); + cairo_set_source_surface( pCairo, mpSurface->getCairoSurface().get(), -rect.X1, -rect.Y1); + cairo_paint( pCairo ); + cairo_destroy( pCairo ); + cairo_surface_destroy( pImageSurface ); + + aLayout = impl_getMemoryLayout( nWidth, nHeight ); + + return aRes; + } + + return uno::Sequence< sal_Int8 >(); + } + + uno::Sequence< sal_Int8 > CanvasHelper::getPixel( rendering::IntegerBitmapLayout& /*bitmapLayout*/, + const geometry::IntegerPoint2D& /*pos*/ ) + { + return uno::Sequence< sal_Int8 >(); + } + + namespace + { + class CairoColorSpace : public cppu::WeakImplHelper< css::rendering::XIntegerBitmapColorSpace > + { + private: + uno::Sequence< sal_Int8 > maComponentTags; + uno::Sequence< sal_Int32 > maBitCounts; + + virtual ::sal_Int8 SAL_CALL getType( ) override + { + return rendering::ColorSpaceType::RGB; + } + virtual uno::Sequence< ::sal_Int8 > SAL_CALL getComponentTags( ) override + { + return maComponentTags; + } + virtual ::sal_Int8 SAL_CALL getRenderingIntent( ) override + { + return rendering::RenderingIntent::PERCEPTUAL; + } + virtual uno::Sequence< beans::PropertyValue > SAL_CALL getProperties( ) override + { + return uno::Sequence< beans::PropertyValue >(); + } + virtual uno::Sequence< double > SAL_CALL convertColorSpace( const uno::Sequence< double >& deviceColor, + const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override + { + // TODO(P3): if we know anything about target + // colorspace, this can be greatly sped up + uno::Sequence<rendering::ARGBColor> aIntermediate( + convertToARGB(deviceColor)); + return targetColorSpace->convertFromARGB(aIntermediate); + } + virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertToRGB( const uno::Sequence< double >& deviceColor ) override + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::RGBColor > aRes(nLen/4); + rendering::RGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + const double fAlpha(pIn[3]); + if( fAlpha == 0.0 ) + *pOut++ = rendering::RGBColor(0.0, 0.0, 0.0); + else + *pOut++ = rendering::RGBColor(pIn[2]/fAlpha,pIn[1]/fAlpha,pIn[0]/fAlpha); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToARGB( const uno::Sequence< double >& deviceColor ) override + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + const double fAlpha(pIn[3]); + if( fAlpha == 0.0 ) + *pOut++ = rendering::ARGBColor(0.0, 0.0, 0.0, 0.0); + else + *pOut++ = rendering::ARGBColor(fAlpha,pIn[2]/fAlpha,pIn[1]/fAlpha,pIn[0]/fAlpha); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToPARGB( const uno::Sequence< double >& deviceColor ) override + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::ARGBColor(pIn[3],pIn[2],pIn[1],pIn[1]); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< double > SAL_CALL convertFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override + { + const rendering::RGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = pIn->Blue; + *pColors++ = pIn->Green; + *pColors++ = pIn->Red; + *pColors++ = 1.0; + ++pIn; + } + return aRes; + } + virtual uno::Sequence< double > SAL_CALL convertFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + const rendering::ARGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = pIn->Alpha*pIn->Blue; + *pColors++ = pIn->Alpha*pIn->Green; + *pColors++ = pIn->Alpha*pIn->Red; + *pColors++ = pIn->Alpha; + ++pIn; + } + return aRes; + } + virtual uno::Sequence< double > SAL_CALL convertFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + const rendering::ARGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = pIn->Blue; + *pColors++ = pIn->Green; + *pColors++ = pIn->Red; + *pColors++ = pIn->Alpha; + ++pIn; + } + return aRes; + } + + // XIntegerBitmapColorSpace + virtual ::sal_Int32 SAL_CALL getBitsPerPixel( ) override + { + return 32; + } + virtual uno::Sequence< ::sal_Int32 > SAL_CALL getComponentBitCounts( ) override + { + return maBitCounts; + } + virtual ::sal_Int8 SAL_CALL getEndianness( ) override + { + return util::Endianness::LITTLE; + } + virtual uno::Sequence<double> SAL_CALL convertFromIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor, + const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override + { + if( dynamic_cast<CairoColorSpace*>(targetColorSpace.get()) ) + { + const sal_Int8* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence<double> aRes(nLen); + double* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = vcl::unotools::toDoubleColor(*pIn++); + *pOut++ = vcl::unotools::toDoubleColor(*pIn++); + *pOut++ = vcl::unotools::toDoubleColor(*pIn++); + *pOut++ = vcl::unotools::toDoubleColor(*pIn++); + } + return aRes; + } + else + { + // TODO(P3): if we know anything about target + // colorspace, this can be greatly sped up + uno::Sequence<rendering::ARGBColor> aIntermediate( + convertIntegerToARGB(deviceColor)); + return targetColorSpace->convertFromARGB(aIntermediate); + } + } + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertToIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor, + const uno::Reference< rendering::XIntegerBitmapColorSpace >& targetColorSpace ) override + { + if( dynamic_cast<CairoColorSpace*>(targetColorSpace.get()) ) + { + // it's us, so simply pass-through the data + return deviceColor; + } + else + { + // TODO(P3): if we know anything about target + // colorspace, this can be greatly sped up + uno::Sequence<rendering::ARGBColor> aIntermediate( + convertIntegerToARGB(deviceColor)); + return targetColorSpace->convertIntegerFromARGB(aIntermediate); + } + } + virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertIntegerToRGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override + { + const sal_Int8* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::RGBColor > aRes(nLen/4); + rendering::RGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + const double fAlpha(static_cast<sal_uInt8>(pIn[3])); + if( fAlpha ) + *pOut++ = rendering::RGBColor( + pIn[2]/fAlpha, + pIn[1]/fAlpha, + pIn[0]/fAlpha); + else + *pOut++ = rendering::RGBColor(0,0,0); + pIn += 4; + } + return aRes; + } + + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override + { + const sal_Int8* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + const double fAlpha(static_cast<sal_uInt8>(pIn[3])); + if( fAlpha ) + *pOut++ = rendering::ARGBColor( + fAlpha/255.0, + pIn[2]/fAlpha, + pIn[1]/fAlpha, + pIn[0]/fAlpha); + else + *pOut++ = rendering::ARGBColor(0,0,0,0); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToPARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override + { + const sal_Int8* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::ARGBColor( + vcl::unotools::toDoubleColor(pIn[3]), + vcl::unotools::toDoubleColor(pIn[2]), + vcl::unotools::toDoubleColor(pIn[1]), + vcl::unotools::toDoubleColor(pIn[0])); + pIn += 4; + } + return aRes; + } + + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override + { + const rendering::RGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< sal_Int8 > aRes(nLen*4); + sal_Int8* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = vcl::unotools::toByteColor(pIn->Blue); + *pColors++ = vcl::unotools::toByteColor(pIn->Green); + *pColors++ = vcl::unotools::toByteColor(pIn->Red); + *pColors++ = -1; + ++pIn; + } + return aRes; + } + + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + const rendering::ARGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< sal_Int8 > aRes(nLen*4); + sal_Int8* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + const double fAlpha(pIn->Alpha); + *pColors++ = vcl::unotools::toByteColor(fAlpha*pIn->Blue); + *pColors++ = vcl::unotools::toByteColor(fAlpha*pIn->Green); + *pColors++ = vcl::unotools::toByteColor(fAlpha*pIn->Red); + *pColors++ = vcl::unotools::toByteColor(fAlpha); + ++pIn; + } + return aRes; + } + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + const rendering::ARGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< sal_Int8 > aRes(nLen*4); + sal_Int8* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = vcl::unotools::toByteColor(pIn->Blue); + *pColors++ = vcl::unotools::toByteColor(pIn->Green); + *pColors++ = vcl::unotools::toByteColor(pIn->Red); + *pColors++ = vcl::unotools::toByteColor(pIn->Alpha); + ++pIn; + } + return aRes; + } + + public: + CairoColorSpace() : + maComponentTags(4), + maBitCounts(4) + { + sal_Int8* pTags = maComponentTags.getArray(); + sal_Int32* pBitCounts = maBitCounts.getArray(); + pTags[0] = rendering::ColorComponentTag::RGB_BLUE; + pTags[1] = rendering::ColorComponentTag::RGB_GREEN; + pTags[2] = rendering::ColorComponentTag::RGB_RED; + pTags[3] = rendering::ColorComponentTag::PREMULTIPLIED_ALPHA; + + pBitCounts[0] = + pBitCounts[1] = + pBitCounts[2] = + pBitCounts[3] = 8; + } + }; + + class CairoNoAlphaColorSpace : public cppu::WeakImplHelper< css::rendering::XIntegerBitmapColorSpace > + { + private: + uno::Sequence< sal_Int8 > maComponentTags; + uno::Sequence< sal_Int32 > maBitCounts; + + virtual ::sal_Int8 SAL_CALL getType( ) override + { + return rendering::ColorSpaceType::RGB; + } + virtual uno::Sequence< ::sal_Int8 > SAL_CALL getComponentTags( ) override + { + return maComponentTags; + } + virtual ::sal_Int8 SAL_CALL getRenderingIntent( ) override + { + return rendering::RenderingIntent::PERCEPTUAL; + } + virtual uno::Sequence< beans::PropertyValue > SAL_CALL getProperties( ) override + { + return uno::Sequence< beans::PropertyValue >(); + } + virtual uno::Sequence< double > SAL_CALL convertColorSpace( const uno::Sequence< double >& deviceColor, + const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override + { + // TODO(P3): if we know anything about target + // colorspace, this can be greatly sped up + uno::Sequence<rendering::ARGBColor> aIntermediate( + convertToARGB(deviceColor)); + return targetColorSpace->convertFromARGB(aIntermediate); + } + virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertToRGB( const uno::Sequence< double >& deviceColor ) override + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::RGBColor > aRes(nLen/4); + rendering::RGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::RGBColor(pIn[2], pIn[1], pIn[0]); + pIn += 4; + } + return aRes; + } + uno::Sequence< rendering::ARGBColor > impl_convertToARGB( const uno::Sequence< double >& deviceColor ) + { + const double* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::ARGBColor(1.0, pIn[2], pIn[1], pIn[0]); + pIn += 4; + } + return aRes; + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToARGB( const uno::Sequence< double >& deviceColor ) override + { + return impl_convertToARGB( deviceColor ); + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertToPARGB( const uno::Sequence< double >& deviceColor ) override + { + return impl_convertToARGB( deviceColor ); + } + virtual uno::Sequence< double > SAL_CALL convertFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override + { + const rendering::RGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = pIn->Blue; + *pColors++ = pIn->Green; + *pColors++ = pIn->Red; + *pColors++ = 1.0; // the value does not matter + ++pIn; + } + return aRes; + } + uno::Sequence< double > impl_convertFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) + { + const rendering::ARGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< double > aRes(nLen*4); + double* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = pIn->Blue; + *pColors++ = pIn->Green; + *pColors++ = pIn->Red; + *pColors++ = 1.0; // the value does not matter + ++pIn; + } + return aRes; + } + virtual uno::Sequence< double > SAL_CALL convertFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + return impl_convertFromARGB( rgbColor ); + } + virtual uno::Sequence< double > SAL_CALL convertFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + return impl_convertFromARGB( rgbColor ); + } + + // XIntegerBitmapColorSpace + virtual ::sal_Int32 SAL_CALL getBitsPerPixel( ) override + { + return 32; + } + virtual uno::Sequence< ::sal_Int32 > SAL_CALL getComponentBitCounts( ) override + { + return maBitCounts; + } + virtual ::sal_Int8 SAL_CALL getEndianness( ) override + { + return util::Endianness::LITTLE; + } + virtual uno::Sequence<double> SAL_CALL convertFromIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor, + const uno::Reference< rendering::XColorSpace >& targetColorSpace ) override + { + if( dynamic_cast<CairoColorSpace*>(targetColorSpace.get()) ) + { + const sal_Int8* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence<double> aRes(nLen); + double* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = vcl::unotools::toDoubleColor(*pIn++); + *pOut++ = vcl::unotools::toDoubleColor(*pIn++); + *pOut++ = vcl::unotools::toDoubleColor(*pIn++); + *pOut++ = 1.0; pIn++; // the value does not matter + } + return aRes; + } + else + { + // TODO(P3): if we know anything about target + // colorspace, this can be greatly sped up + uno::Sequence<rendering::ARGBColor> aIntermediate( + convertIntegerToARGB(deviceColor)); + return targetColorSpace->convertFromARGB(aIntermediate); + } + } + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertToIntegerColorSpace( const uno::Sequence< ::sal_Int8 >& deviceColor, + const uno::Reference< rendering::XIntegerBitmapColorSpace >& targetColorSpace ) override + { + if( dynamic_cast<CairoNoAlphaColorSpace*>(targetColorSpace.get()) ) + { + // it's us, so simply pass-through the data + return deviceColor; + } + else + { + // TODO(P3): if we know anything about target + // colorspace, this can be greatly sped up + uno::Sequence<rendering::ARGBColor> aIntermediate( + convertIntegerToARGB(deviceColor)); + return targetColorSpace->convertIntegerFromARGB(aIntermediate); + } + } + virtual uno::Sequence< rendering::RGBColor > SAL_CALL convertIntegerToRGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override + { + const sal_Int8* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::RGBColor > aRes(nLen/4); + rendering::RGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::RGBColor( pIn[2], pIn[1], pIn[0] ); + pIn += 4; + } + return aRes; + } + + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override + { + return impl_convertIntegerToARGB( deviceColor ); + } + virtual uno::Sequence< rendering::ARGBColor > SAL_CALL convertIntegerToPARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) override + { + return impl_convertIntegerToARGB( deviceColor ); + } + uno::Sequence< rendering::ARGBColor > impl_convertIntegerToARGB( const uno::Sequence< ::sal_Int8 >& deviceColor ) + { + const sal_Int8* pIn( deviceColor.getConstArray() ); + const std::size_t nLen( deviceColor.getLength() ); + ENSURE_ARG_OR_THROW2(nLen%4==0, + "number of channels no multiple of 4", + static_cast<rendering::XColorSpace*>(this), 0); + + uno::Sequence< rendering::ARGBColor > aRes(nLen/4); + rendering::ARGBColor* pOut( aRes.getArray() ); + for( std::size_t i=0; i<nLen; i+=4 ) + { + *pOut++ = rendering::ARGBColor( + 1.0, + vcl::unotools::toDoubleColor(pIn[2]), + vcl::unotools::toDoubleColor(pIn[1]), + vcl::unotools::toDoubleColor(pIn[0])); + pIn += 4; + } + return aRes; + } + + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromRGB( const uno::Sequence< rendering::RGBColor >& rgbColor ) override + { + const rendering::RGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< sal_Int8 > aRes(nLen*4); + sal_Int8* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = vcl::unotools::toByteColor(pIn->Blue); + *pColors++ = vcl::unotools::toByteColor(pIn->Green); + *pColors++ = vcl::unotools::toByteColor(pIn->Red); + *pColors++ = -1; // the value does not matter + ++pIn; + } + return aRes; + } + + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + return impl_convertIntegerFromARGB( rgbColor ); + } + virtual uno::Sequence< ::sal_Int8 > SAL_CALL convertIntegerFromPARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) override + { + return impl_convertIntegerFromARGB( rgbColor ); + } + uno::Sequence< ::sal_Int8 > impl_convertIntegerFromARGB( const uno::Sequence< rendering::ARGBColor >& rgbColor ) + { + const rendering::ARGBColor* pIn( rgbColor.getConstArray() ); + const std::size_t nLen( rgbColor.getLength() ); + + uno::Sequence< sal_Int8 > aRes(nLen*4); + sal_Int8* pColors=aRes.getArray(); + for( std::size_t i=0; i<nLen; ++i ) + { + *pColors++ = vcl::unotools::toByteColor(pIn->Blue); + *pColors++ = vcl::unotools::toByteColor(pIn->Green); + *pColors++ = vcl::unotools::toByteColor(pIn->Red); + *pColors++ = -1; // the value does not matter + ++pIn; + } + return aRes; + } + + public: + CairoNoAlphaColorSpace() : + maComponentTags(3), + maBitCounts(3) + { + sal_Int8* pTags = maComponentTags.getArray(); + sal_Int32* pBitCounts = maBitCounts.getArray(); + pTags[0] = rendering::ColorComponentTag::RGB_BLUE; + pTags[1] = rendering::ColorComponentTag::RGB_GREEN; + pTags[2] = rendering::ColorComponentTag::RGB_RED; + + pBitCounts[0] = + pBitCounts[1] = + pBitCounts[2] = 8; + } + }; + + uno::Reference<rendering::XIntegerBitmapColorSpace>& GetCairoNoAlphaColorSpace() + { + static uno::Reference<rendering::XIntegerBitmapColorSpace> SPACE = new CairoNoAlphaColorSpace(); + return SPACE; + }; + + uno::Reference<rendering::XIntegerBitmapColorSpace>& GetCairoColorSpace() + { + static uno::Reference<rendering::XIntegerBitmapColorSpace> SPACE = new CairoColorSpace(); + return SPACE; + }; + + } + + rendering::IntegerBitmapLayout CanvasHelper::getMemoryLayout() + { + if( !mpCairo ) + return rendering::IntegerBitmapLayout(); // we're disposed + + const geometry::IntegerSize2D aSize(getSize()); + + return impl_getMemoryLayout( aSize.Width, aSize.Height ); + } + + rendering::IntegerBitmapLayout + CanvasHelper::impl_getMemoryLayout( const sal_Int32 nWidth, const sal_Int32 nHeight ) + { + rendering::IntegerBitmapLayout aLayout; + + aLayout.ScanLines = nHeight; + aLayout.ScanLineBytes = nWidth*4; + aLayout.ScanLineStride = aLayout.ScanLineBytes; + aLayout.PlaneStride = 0; + aLayout.ColorSpace = mbHaveAlpha ? GetCairoColorSpace() : GetCairoNoAlphaColorSpace(); + aLayout.Palette.clear(); + aLayout.IsMsbFirst = false; + + return aLayout; + } + + + bool CanvasHelper::repaint( const SurfaceSharedPtr& pSurface, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + SAL_INFO( "canvas.cairo", "CanvasHelper::repaint"); + + if( !mpCairo ) + return true; + + cairo_save( mpCairo.get() ); + + cairo_rectangle( mpCairo.get(), 0, 0, maSize.getX(), maSize.getY() ); + cairo_clip( mpCairo.get() ); + + useStates( viewState, renderState, true ); + + cairo_matrix_t aMatrix; + + cairo_get_matrix( mpCairo.get(), &aMatrix ); + aMatrix.xx = aMatrix.yy = 1; + cairo_set_matrix( mpCairo.get(), &aMatrix ); + + cairo_set_source_surface( mpCairo.get(), pSurface->getCairoSurface().get(), 0, 0 ); + cairo_paint( mpCairo.get() ); + cairo_restore( mpCairo.get() ); + + return true; + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |