/* -*- 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 <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/polygon/b2dlinegeometry.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/range/b2drectangle.hxx>
#include <basegfx/utils/canvastools.hxx>
#include <basegfx/vector/b2dsize.hxx>
#include <com/sun/star/drawing/LineCap.hpp>
#include <com/sun/star/rendering/CompositeOperation.hpp>
#include <com/sun/star/rendering/PathCapType.hpp>
#include <com/sun/star/rendering/PathJoinType.hpp>
#include <com/sun/star/rendering/TextDirection.hpp>
#include <comphelper/sequence.hxx>
#include <rtl/math.hxx>
#include <comphelper/diagnose_ex.hxx>
#include <tools/poly.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/BitmapReadAccess.hxx>
#include <vcl/canvastools.hxx>
#include <vcl/bitmap/BitmapAlphaClampFilter.hxx>
#include <vcl/skia/SkiaHelper.hxx>
#include <canvas/canvastools.hxx>
#include "canvasbitmap.hxx"
#include "canvasfont.hxx"
#include "canvashelper.hxx"
#include "impltools.hxx"
#include "textlayout.hxx"
using namespace ::com::sun::star;
namespace vclcanvas
{
namespace
{
basegfx::B2DLineJoin b2DJoineFromJoin( sal_Int8 nJoinType )
{
switch( nJoinType )
{
case rendering::PathJoinType::NONE:
return basegfx::B2DLineJoin::NONE;
case rendering::PathJoinType::MITER:
return basegfx::B2DLineJoin::Miter;
case rendering::PathJoinType::ROUND:
return basegfx::B2DLineJoin::Round;
case rendering::PathJoinType::BEVEL:
return basegfx::B2DLineJoin::Bevel;
default:
ENSURE_OR_THROW( false,
"b2DJoineFromJoin(): Unexpected join type" );
}
return basegfx::B2DLineJoin::NONE;
}
drawing::LineCap unoCapeFromCap( sal_Int8 nCapType)
{
switch ( nCapType)
{
case rendering::PathCapType::BUTT:
return drawing::LineCap_BUTT;
case rendering::PathCapType::ROUND:
return drawing::LineCap_ROUND;
case rendering::PathCapType::SQUARE:
return drawing::LineCap_SQUARE;
default:
ENSURE_OR_THROW( false,
"unoCapeFromCap(): Unexpected cap type" );
}
return drawing::LineCap_BUTT;
}
}
CanvasHelper::CanvasHelper() :
mpDevice(),
mbHaveAlpha( false )
{
}
void CanvasHelper::disposing()
{
mpDevice = nullptr;
mpProtectedOutDevProvider.reset();
mpOutDevProvider.reset();
mp2ndOutDevProvider.reset();
}
void CanvasHelper::init( rendering::XGraphicDevice& rDevice,
const OutDevProviderSharedPtr& rOutDev,
bool bProtect,
bool bHaveAlpha )
{
// cast away const, need to change refcount (as this is
// ~invisible to client code, still logically const)
mpDevice = &rDevice;
mbHaveAlpha = bHaveAlpha;
setOutDev( rOutDev, bProtect );
}
void CanvasHelper::setOutDev( const OutDevProviderSharedPtr& rOutDev,
bool bProtect )
{
if( bProtect )
mpProtectedOutDevProvider = rOutDev;
else
mpProtectedOutDevProvider.reset();
mpOutDevProvider = rOutDev;
}
void CanvasHelper::setBackgroundOutDev( const OutDevProviderSharedPtr& rOutDev )
{
mp2ndOutDevProvider = rOutDev;
mp2ndOutDevProvider->getOutDev().EnableMapMode( false );
mp2ndOutDevProvider->getOutDev().SetAntialiasing( AntialiasingFlags::Enable );
}
void CanvasHelper::clear()
{
// are we disposed?
if( !mpOutDevProvider )
return;
OutputDevice& rOutDev( mpOutDevProvider->getOutDev() );
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
rOutDev.EnableMapMode( false );
rOutDev.SetAntialiasing( AntialiasingFlags::Enable );
rOutDev.SetLineColor( COL_WHITE );
rOutDev.SetFillColor( COL_WHITE );
rOutDev.SetClipRegion();
rOutDev.DrawRect( ::tools::Rectangle( Point(),
rOutDev.GetOutputSizePixel()) );
if( !mp2ndOutDevProvider )
return;
OutputDevice& rOutDev2( mp2ndOutDevProvider->getOutDev() );
rOutDev2.SetDrawMode( DrawModeFlags::Default );
rOutDev2.EnableMapMode( false );
rOutDev2.SetAntialiasing( AntialiasingFlags::Enable );
rOutDev2.SetLineColor( COL_WHITE );
rOutDev2.SetFillColor( COL_WHITE );
rOutDev2.SetClipRegion();
rOutDev2.DrawRect( ::tools::Rectangle( Point(),
rOutDev2.GetOutputSizePixel()) );
rOutDev2.SetDrawMode( DrawModeFlags::BlackLine | DrawModeFlags::BlackFill | DrawModeFlags::BlackText |
DrawModeFlags::BlackGradient | DrawModeFlags::BlackBitmap );
}
void CanvasHelper::drawLine( const rendering::XCanvas* ,
const geometry::RealPoint2D& aStartRealPoint2D,
const geometry::RealPoint2D& aEndRealPoint2D,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
// are we disposed?
if( !mpOutDevProvider )
return;
// nope, render
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
setupOutDevState( viewState, renderState, LINE_COLOR );
const Point aStartPoint( tools::mapRealPoint2D( aStartRealPoint2D,
viewState, renderState ) );
const Point aEndPoint( tools::mapRealPoint2D( aEndRealPoint2D,
viewState, renderState ) );
// TODO(F2): alpha
mpOutDevProvider->getOutDev().DrawLine( aStartPoint, aEndPoint );
if( mp2ndOutDevProvider )
mp2ndOutDevProvider->getOutDev().DrawLine( aStartPoint, aEndPoint );
}
void CanvasHelper::drawBezier( const rendering::XCanvas* ,
const geometry::RealBezierSegment2D& aBezierSegment,
const geometry::RealPoint2D& _aEndPoint,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
if( !mpOutDevProvider )
return;
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
setupOutDevState( viewState, renderState, LINE_COLOR );
const Point aStartPoint( tools::mapRealPoint2D( geometry::RealPoint2D(aBezierSegment.Px,
aBezierSegment.Py),
viewState, renderState ) );
const Point aCtrlPoint1( tools::mapRealPoint2D( geometry::RealPoint2D(aBezierSegment.C1x,
aBezierSegment.C1y),
viewState, renderState ) );
const Point aCtrlPoint2( tools::mapRealPoint2D( geometry::RealPoint2D(aBezierSegment.C2x,
aBezierSegment.C2y),
viewState, renderState ) );
const Point aEndPoint( tools::mapRealPoint2D( _aEndPoint,
viewState, renderState ) );
::tools::Polygon aPoly(4);
aPoly.SetPoint( aStartPoint, 0 );
aPoly.SetFlags( 0, PolyFlags::Normal );
aPoly.SetPoint( aCtrlPoint1, 1 );
aPoly.SetFlags( 1, PolyFlags::Control );
aPoly.SetPoint( aCtrlPoint2, 2 );
aPoly.SetFlags( 2, PolyFlags::Control );
aPoly.SetPoint( aEndPoint, 3 );
aPoly.SetFlags( 3, PolyFlags::Normal );
// TODO(F2): alpha
mpOutDevProvider->getOutDev().DrawPolygon( aPoly );
if( mp2ndOutDevProvider )
mp2ndOutDevProvider->getOutDev().DrawPolygon( aPoly );
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawPolyPolygon( const rendering::XCanvas* ,
const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
ENSURE_ARG_OR_THROW( xPolyPolygon.is(),
"polygon is NULL");
if( mpOutDevProvider )
{
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
setupOutDevState( viewState, renderState, LINE_COLOR );
const ::basegfx::B2DPolyPolygon aBasegfxPolyPoly(
::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(xPolyPolygon) );
const ::tools::PolyPolygon aPolyPoly( tools::mapPolyPolygon( aBasegfxPolyPoly, viewState, renderState ) );
if( aBasegfxPolyPoly.isClosed() )
{
mpOutDevProvider->getOutDev().DrawPolyPolygon( aPolyPoly );
if( mp2ndOutDevProvider )
mp2ndOutDevProvider->getOutDev().DrawPolyPolygon( aPolyPoly );
}
else
{
// mixed open/closed state. Cannot render open polygon
// via DrawPolyPolygon(), since that implicitly
// closed every polygon. OTOH, no need to distinguish
// further and render closed polygons via
// DrawPolygon(), and open ones via DrawPolyLine():
// closed polygons will simply already contain the
// closing segment.
sal_uInt16 nSize( aPolyPoly.Count() );
for( sal_uInt16 i=0; i<nSize; ++i )
{
mpOutDevProvider->getOutDev().DrawPolyLine( aPolyPoly[i] );
if( mp2ndOutDevProvider )
mp2ndOutDevProvider->getOutDev().DrawPolyLine( aPolyPoly[i] );
}
}
}
// TODO(P1): Provide caching here.
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 )
{
ENSURE_ARG_OR_THROW( xPolyPolygon.is(),
"polygon is NULL");
if( mpOutDevProvider )
{
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
::basegfx::B2DHomMatrix aMatrix;
::canvas::tools::mergeViewAndRenderTransform(aMatrix, viewState, renderState);
::basegfx::B2DPolyPolygon aPolyPoly(
::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(xPolyPolygon) );
// apply dashing, if any
if( strokeAttributes.DashArray.hasElements() )
{
const std::vector<double> aDashArray(
::comphelper::sequenceToContainer< std::vector<double> >(strokeAttributes.DashArray) );
::basegfx::B2DPolyPolygon aDashedPolyPoly;
for( sal_uInt32 i=0; i<aPolyPoly.count(); ++i )
{
// AW: new interface; You may also get gaps in the same run now
basegfx::utils::applyLineDashing(aPolyPoly.getB2DPolygon(i), aDashArray, &aDashedPolyPoly);
//aDashedPolyPoly.append(
// ::basegfx::utils::applyLineDashing( aPolyPoly.getB2DPolygon(i),
// aDashArray ) );
}
aPolyPoly = std::move(aDashedPolyPoly);
}
::basegfx::B2DSize aLinePixelSize(strokeAttributes.StrokeWidth,
strokeAttributes.StrokeWidth);
aLinePixelSize *= aMatrix;
::basegfx::B2DPolyPolygon aStrokedPolyPoly;
if( aLinePixelSize.getLength() < 1.42 )
{
// line width < 1.0 in device pixel, thus, output as a
// simple hairline poly-polygon
setupOutDevState( viewState, renderState, LINE_COLOR );
aStrokedPolyPoly = std::move(aPolyPoly);
}
else
{
// render as a 'thick' line
setupOutDevState( viewState, renderState, FILL_COLOR );
for( sal_uInt32 i=0; i<aPolyPoly.count(); ++i )
{
double fMiterMinimumAngle;
if (strokeAttributes.MiterLimit <= 1.0)
{
fMiterMinimumAngle = M_PI_2;
}
else
{
fMiterMinimumAngle = 2.0 * asin(1.0/strokeAttributes.MiterLimit);
}
// TODO(F2): Also use Cap settings from
// StrokeAttributes, the
// createAreaGeometryForLineStartEnd() method does not
// seem to fit very well here
// AW: New interface, will create bezier polygons now
aStrokedPolyPoly.append(basegfx::utils::createAreaGeometry(
aPolyPoly.getB2DPolygon(i),
strokeAttributes.StrokeWidth*0.5,
b2DJoineFromJoin(strokeAttributes.JoinType),
unoCapeFromCap(strokeAttributes.StartCapType),
basegfx::deg2rad(12.5) /* default fMaxAllowedAngle*/ ,
0.4 /* default fMaxPartOfEdge*/ ,
fMiterMinimumAngle
));
//aStrokedPolyPoly.append(
// ::basegfx::utils::createAreaGeometryForPolygon( aPolyPoly.getB2DPolygon(i),
// strokeAttributes.StrokeWidth*0.5,
// b2DJoineFromJoin(strokeAttributes.JoinType) ) );
}
}
// transform only _now_, all the StrokeAttributes are in
// user coordinates.
aStrokedPolyPoly.transform( aMatrix );
// TODO(F2): When using alpha here, must handle that via
// temporary surface or somesuch.
// Note: the generated stroke poly-polygon is NOT free of
// self-intersections. Therefore, if we would render it
// via OutDev::DrawPolyPolygon(), on/off fill would
// generate off areas on those self-intersections.
for( sal_uInt32 i=0; i<aStrokedPolyPoly.count(); ++i )
{
const basegfx::B2DPolygon& polygon = aStrokedPolyPoly.getB2DPolygon( i );
if( polygon.isClosed()) {
mpOutDevProvider->getOutDev().DrawPolygon( polygon );
if( mp2ndOutDevProvider )
mp2ndOutDevProvider->getOutDev().DrawPolygon( polygon );
} else {
mpOutDevProvider->getOutDev().DrawPolyLine( polygon );
if( mp2ndOutDevProvider )
mp2ndOutDevProvider->getOutDev().DrawPolyLine( polygon );
}
}
}
// 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 >& ,
const rendering::ViewState& ,
const rendering::RenderState& ,
const uno::Sequence< rendering::Texture >& ,
const rendering::StrokeAttributes& )
{
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::strokeTextureMappedPolyPolygon( const rendering::XCanvas* ,
const uno::Reference< rendering::XPolyPolygon2D >& ,
const rendering::ViewState& ,
const rendering::RenderState& ,
const uno::Sequence< rendering::Texture >& ,
const uno::Reference< geometry::XMapping2D >& ,
const rendering::StrokeAttributes& )
{
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
uno::Reference< rendering::XPolyPolygon2D > CanvasHelper::queryStrokeShapes( const rendering::XCanvas* ,
const uno::Reference< rendering::XPolyPolygon2D >& ,
const rendering::ViewState& ,
const rendering::RenderState& ,
const rendering::StrokeAttributes& )
{
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 )
{
ENSURE_ARG_OR_THROW( xPolyPolygon.is(),
"polygon is NULL");
if( mpOutDevProvider )
{
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
const int nAlpha( setupOutDevState( viewState, renderState, FILL_COLOR ) );
::basegfx::B2DPolyPolygon aB2DPolyPoly(
::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D(xPolyPolygon));
aB2DPolyPoly.setClosed(true); // ensure closed poly, otherwise VCL does not fill
const ::tools::PolyPolygon aPolyPoly( tools::mapPolyPolygon(
aB2DPolyPoly,
viewState, renderState ) );
const bool bSourceAlpha( renderState.CompositeOperation == rendering::CompositeOperation::SOURCE );
if( nAlpha == 255 || bSourceAlpha )
{
mpOutDevProvider->getOutDev().DrawPolyPolygon( aPolyPoly );
}
else
{
const int nTransPercent( ((255 - nAlpha) * 100 + 128) / 255 ); // normal rounding, no truncation here
mpOutDevProvider->getOutDev().DrawTransparent( aPolyPoly, static_cast<sal_uInt16>(nTransPercent) );
}
if( mp2ndOutDevProvider )
{
// HACK. Normally, CanvasHelper does not care about
// actually what mp2ndOutDev is... well, here we do &
// assume a 1bpp target - everything beyond 97%
// transparency is fully transparent
if( nAlpha > 2 )
{
mp2ndOutDevProvider->getOutDev().SetFillColor( COL_BLACK );
mp2ndOutDevProvider->getOutDev().DrawPolyPolygon( aPolyPoly );
}
}
}
// TODO(P1): Provide caching here.
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::fillTextureMappedPolyPolygon( const rendering::XCanvas* ,
const uno::Reference< rendering::XPolyPolygon2D >& ,
const rendering::ViewState& ,
const rendering::RenderState& ,
const uno::Sequence< rendering::Texture >& ,
const uno::Reference< geometry::XMapping2D >& )
{
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
uno::Reference< rendering::XCanvasFont > CanvasHelper::createFont( const rendering::XCanvas* ,
const rendering::FontRequest& fontRequest,
const uno::Sequence< beans::PropertyValue >& extraFontProperties,
const geometry::Matrix2D& fontMatrix )
{
if( mpOutDevProvider && mpDevice )
{
// TODO(F2): font properties and font matrix
return uno::Reference< rendering::XCanvasFont >(
new CanvasFont(fontRequest, extraFontProperties, fontMatrix,
*mpDevice, mpOutDevProvider) );
}
return uno::Reference< rendering::XCanvasFont >();
}
uno::Sequence< rendering::FontInfo > CanvasHelper::queryAvailableFonts( const rendering::XCanvas* ,
const rendering::FontInfo& ,
const uno::Sequence< beans::PropertyValue >& )
{
// TODO(F2)
return uno::Sequence< rendering::FontInfo >();
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawText( const rendering::XCanvas* ,
const rendering::StringContext& text,
const uno::Reference< rendering::XCanvasFont >& xFont,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState,
sal_Int8 textDirection )
{
ENSURE_ARG_OR_THROW( xFont.is(),
"font is NULL");
if( mpOutDevProvider )
{
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
::Point aOutpos;
if( !setupTextOutput( aOutpos, viewState, renderState, xFont ) )
return uno::Reference< rendering::XCachedPrimitive >(nullptr); // no output necessary
// change text direction and layout mode
vcl::text::ComplexTextLayoutFlags nLayoutMode(vcl::text::ComplexTextLayoutFlags::Default);
switch( textDirection )
{
case rendering::TextDirection::WEAK_LEFT_TO_RIGHT:
case rendering::TextDirection::STRONG_LEFT_TO_RIGHT:
nLayoutMode |= vcl::text::ComplexTextLayoutFlags::BiDiStrong;
nLayoutMode |= vcl::text::ComplexTextLayoutFlags::TextOriginLeft;
break;
case rendering::TextDirection::WEAK_RIGHT_TO_LEFT:
nLayoutMode |= vcl::text::ComplexTextLayoutFlags::BiDiRtl;
[[fallthrough]];
case rendering::TextDirection::STRONG_RIGHT_TO_LEFT:
nLayoutMode |= vcl::text::ComplexTextLayoutFlags::BiDiRtl | vcl::text::ComplexTextLayoutFlags::BiDiStrong;
nLayoutMode |= vcl::text::ComplexTextLayoutFlags::TextOriginRight;
break;
}
// TODO(F2): alpha
mpOutDevProvider->getOutDev().SetLayoutMode( nLayoutMode );
mpOutDevProvider->getOutDev().DrawText( aOutpos,
text.Text,
::canvas::tools::numeric_cast<sal_uInt16>(text.StartPosition),
::canvas::tools::numeric_cast<sal_uInt16>(text.Length) );
if( mp2ndOutDevProvider )
{
mp2ndOutDevProvider->getOutDev().SetLayoutMode( nLayoutMode );
mp2ndOutDevProvider->getOutDev().DrawText( aOutpos,
text.Text,
::canvas::tools::numeric_cast<sal_uInt16>(text.StartPosition),
::canvas::tools::numeric_cast<sal_uInt16>(text.Length) );
}
}
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawTextLayout( const rendering::XCanvas* ,
const uno::Reference< rendering::XTextLayout >& xLayoutedText,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
ENSURE_ARG_OR_THROW( xLayoutedText.is(),
"layout is NULL");
TextLayout* pTextLayout = dynamic_cast< TextLayout* >( xLayoutedText.get() );
if( pTextLayout )
{
if( mpOutDevProvider )
{
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
// TODO(T3): Race condition. We're taking the font
// from xLayoutedText, and then calling draw() at it,
// without exclusive access. Move setupTextOutput(),
// e.g. to impltools?
::Point aOutpos;
if( !setupTextOutput( aOutpos, viewState, renderState, xLayoutedText->getFont() ) )
return uno::Reference< rendering::XCachedPrimitive >(nullptr); // no output necessary
// TODO(F2): What about the offset scalings?
// TODO(F2): alpha
pTextLayout->draw( mpOutDevProvider->getOutDev(), aOutpos, viewState, renderState );
if( mp2ndOutDevProvider )
pTextLayout->draw( mp2ndOutDevProvider->getOutDev(), aOutpos, viewState, renderState );
}
}
else
{
ENSURE_ARG_OR_THROW( false,
"TextLayout not compatible with this canvas" );
}
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::implDrawBitmap( const rendering::XCanvas* pCanvas,
const uno::Reference< rendering::XBitmap >& xBitmap,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState,
bool bModulateColors )
{
ENSURE_ARG_OR_THROW( xBitmap.is(),
"bitmap is NULL");
::canvas::tools::verifyInput( renderState,
__func__,
mpDevice,
4,
bModulateColors ? 3 : 0 );
if( mpOutDevProvider )
{
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
setupOutDevState( viewState, renderState, IGNORE_COLOR );
::basegfx::B2DHomMatrix aMatrix;
::canvas::tools::mergeViewAndRenderTransform(aMatrix, viewState, renderState);
::basegfx::B2DPoint aOutputPos( 0.0, 0.0 );
aOutputPos *= aMatrix;
BitmapEx aBmpEx( tools::bitmapExFromXBitmap(xBitmap) );
// TODO(F2): Implement modulation again for other color
// channels (currently, works only for alpha). Note: this
// is already implemented in transformBitmap()
if( bModulateColors &&
renderState.DeviceColor.getLength() > 3 )
{
// optimize away the case where alpha modulation value
// is 1.0 - we then simply switch off modulation at all
bModulateColors = !::rtl::math::approxEqual(
renderState.DeviceColor[3], 1.0);
}
// check whether we can render bitmap as-is: must not
// modulate colors, matrix must either be the identity
// transform (that's clear), _or_ contain only
// translational components.
if( !bModulateColors &&
(aMatrix.isIdentity() ||
(::basegfx::fTools::equalZero( aMatrix.get(0,1) ) &&
::basegfx::fTools::equalZero( aMatrix.get(1,0) ) &&
::rtl::math::approxEqual(aMatrix.get(0,0), 1.0) &&
::rtl::math::approxEqual(aMatrix.get(1,1), 1.0)) ) )
{
// optimized case: identity matrix, or only
// translational components.
mpOutDevProvider->getOutDev().DrawBitmapEx( vcl::unotools::pointFromB2DPoint( aOutputPos ),
aBmpEx );
if( mp2ndOutDevProvider )
{
// HACK. Normally, CanvasHelper does not care about
// actually what mp2ndOutDev is... well, here we do &
// assume a 1bpp target - everything beyond 97%
// transparency is fully transparent
if( aBmpEx.IsAlpha() && !SkiaHelper::isVCLSkiaEnabled())
{
BitmapFilter::Filter(aBmpEx, BitmapAlphaClampFilter(253));
}
mp2ndOutDevProvider->getOutDev().DrawBitmapEx( vcl::unotools::pointFromB2DPoint( aOutputPos ),
aBmpEx );
}
// Returning a cache object is not useful, the XBitmap
// itself serves this purpose
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
else if( mpOutDevProvider->getOutDev().HasFastDrawTransformedBitmap())
{
::basegfx::B2DHomMatrix aSizeTransform;
aSizeTransform.scale( aBmpEx.GetSizePixel().Width(), aBmpEx.GetSizePixel().Height() );
aMatrix = aMatrix * aSizeTransform;
const double fAlpha = bModulateColors ? renderState.DeviceColor[3] : 1.0;
mpOutDevProvider->getOutDev().DrawTransformedBitmapEx( aMatrix, aBmpEx, fAlpha );
if( mp2ndOutDevProvider )
{
if( aBmpEx.IsAlpha() )
{
// tdf#157790 invert alpha mask
// Due to commit 81994cb2b8b32453a92bcb011830fcb884f22ff3,
// the alpha mask needs to be inverted. Note: when
// testing tdf#157790, this code only gets executed
// when Skia is enabled.
AlphaMask aAlpha( aBmpEx.GetAlphaMask() );
aAlpha.Invert();
aBmpEx = BitmapEx( aBmpEx.GetBitmap(), aAlpha );
// HACK. Normally, CanvasHelper does not care about
// actually what mp2ndOutDev is... well, here we do &
// assume a 1bpp target - everything beyond 97%
// transparency is fully transparent
if( !SkiaHelper::isVCLSkiaEnabled())
{
BitmapFilter::Filter(aBmpEx, BitmapAlphaClampFilter(253));
}
}
mp2ndOutDevProvider->getOutDev().DrawTransformedBitmapEx( aMatrix, aBmpEx );
}
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
else
{
// Matrix contains non-trivial transformation (or
// color modulation is requested), decompose to check
// whether GraphicObject suffices
::basegfx::B2DVector aScale;
double nRotate;
double nShearX;
aMatrix.decompose( aScale, aOutputPos, nRotate, nShearX );
GraphicAttr aGrfAttr;
GraphicObjectSharedPtr pGrfObj;
::Size aBmpSize( aBmpEx.GetSizePixel() );
// setup alpha modulation
if( bModulateColors )
{
const double nAlphaModulation( renderState.DeviceColor[3] );
// TODO(F1): Note that the GraphicManager has a
// subtle difference in how it calculates the
// resulting alpha value: it's using the inverse
// alpha values (i.e. 'transparency'), and
// calculates transOrig + transModulate, instead
// of transOrig + transModulate -
// transOrig*transModulate (which would be
// equivalent to the origAlpha*modulateAlpha the
// DX canvas performs)
aGrfAttr.SetAlpha(
static_cast< sal_uInt8 >(
::basegfx::fround( 255.0 * nAlphaModulation ) ) );
}
if( ::basegfx::fTools::equalZero( nShearX ) )
{
// no shear, GraphicObject is enough (the
// GraphicObject only supports scaling, rotation
// and translation)
// #i75339# don't apply mirror flags, having
// negative size values is enough to make
// GraphicObject flip the bitmap
// The angle has to be mapped from radian to tenths of
// degrees with the orientation reversed: [0,2Pi) ->
// (3600,0]. Note that the original angle may have
// values outside the [0,2Pi) interval.
const double nAngleInTenthOfDegrees (3600.0 - basegfx::rad2deg<10>(nRotate));
aGrfAttr.SetRotation( Degree10(::basegfx::fround(nAngleInTenthOfDegrees)) );
pGrfObj = std::make_shared<GraphicObject>( aBmpEx );
}
else
{
// modify output position, to account for the fact
// that transformBitmap() always normalizes its output
// bitmap into the smallest enclosing box.
::basegfx::B2DRectangle aDestRect = ::canvas::tools::calcTransformedRectBounds(
::basegfx::B2DRectangle(0,
0,
aBmpSize.Width(),
aBmpSize.Height()),
aMatrix );
aOutputPos.setX( aDestRect.getMinX() );
aOutputPos.setY( aDestRect.getMinY() );
// complex transformation, use generic affine bitmap
// transformation
aBmpEx = tools::transformBitmap( aBmpEx,
aMatrix );
pGrfObj = std::make_shared<GraphicObject>( aBmpEx );
// clear scale values, generated bitmap already
// contains scaling
aScale.setX( 1.0 ); aScale.setY( 1.0 );
// update bitmap size, bitmap has changed above.
aBmpSize = aBmpEx.GetSizePixel();
}
// output GraphicObject
const ::Point aPt( vcl::unotools::pointFromB2DPoint( aOutputPos ) );
const ::Size aSz( ::basegfx::fround<::tools::Long>( aScale.getX() * aBmpSize.Width() ),
::basegfx::fround<::tools::Long>( aScale.getY() * aBmpSize.Height() ) );
pGrfObj->Draw(mpOutDevProvider->getOutDev(),
aPt,
aSz,
&aGrfAttr);
if( mp2ndOutDevProvider )
{
GraphicObjectSharedPtr p2ndGrfObj = pGrfObj;
if( aBmpEx.IsAlpha() )
{
// tdf#157790 invert alpha mask
// Due to commit 81994cb2b8b32453a92bcb011830fcb884f22ff3,
// the alpha mask needs to be inverted. Note: when
// testing tdf#157790, this code only gets executed
// when Skia is disabled.
AlphaMask aAlpha( aBmpEx.GetAlphaMask() );
aAlpha.Invert();
BitmapEx a2ndBmpEx( aBmpEx.GetBitmap(), aAlpha );
p2ndGrfObj = std::make_shared<GraphicObject>( a2ndBmpEx );
}
p2ndGrfObj->Draw(mp2ndOutDevProvider->getOutDev(),
aPt,
aSz,
&aGrfAttr);
}
// created GraphicObject, which possibly cached
// display bitmap - return cache object, to retain
// that information.
return uno::Reference< rendering::XCachedPrimitive >(
new CachedBitmap( std::move(pGrfObj),
aPt,
aSz,
aGrfAttr,
viewState,
renderState,
// cast away const, need to
// change refcount (as this is
// ~invisible to client code,
// still logically const)
const_cast< rendering::XCanvas* >(pCanvas)) );
}
}
// Nothing rendered
return uno::Reference< rendering::XCachedPrimitive >(nullptr);
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmap( const rendering::XCanvas* pCanvas,
const uno::Reference< rendering::XBitmap >& xBitmap,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
return implDrawBitmap( pCanvas,
xBitmap,
viewState,
renderState,
false );
}
uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmapModulated( const rendering::XCanvas* pCanvas,
const uno::Reference< rendering::XBitmap >& xBitmap,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState )
{
return implDrawBitmap( pCanvas,
xBitmap,
viewState,
renderState,
true );
}
geometry::IntegerSize2D CanvasHelper::getSize()
{
if( !mpOutDevProvider )
return geometry::IntegerSize2D(); // we're disposed
return vcl::unotools::integerSize2DFromSize( mpOutDevProvider->getOutDev().GetOutputSizePixel() );
}
uno::Reference< rendering::XBitmap > CanvasHelper::getScaledBitmap( const geometry::RealSize2D& newSize,
bool beFast )
{
if( !mpOutDevProvider || !mpDevice )
return uno::Reference< rendering::XBitmap >(); // we're disposed
OutputDevice& rOutDev( mpOutDevProvider->getOutDev() );
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
rOutDev.EnableMapMode( false );
rOutDev.SetAntialiasing( AntialiasingFlags::Enable );
// TODO(F2): Support alpha vdev canvas here
const Point aEmptyPoint(0,0);
const Size aBmpSize( rOutDev.GetOutputSizePixel() );
BitmapEx aBitmap( rOutDev.GetBitmapEx(aEmptyPoint, aBmpSize) );
aBitmap.Scale( vcl::unotools::sizeFromRealSize2D(newSize),
beFast ? BmpScaleFlag::Default : BmpScaleFlag::BestQuality );
return uno::Reference< rendering::XBitmap >(
new CanvasBitmap( aBitmap, *mpDevice, mpOutDevProvider ) );
}
uno::Sequence< sal_Int8 > CanvasHelper::getData( rendering::IntegerBitmapLayout& rLayout,
const geometry::IntegerRectangle2D& rect )
{
if( !mpOutDevProvider )
return uno::Sequence< sal_Int8 >(); // we're disposed
rLayout = getMemoryLayout();
// TODO(F2): Support alpha canvas here
const ::tools::Rectangle aRect( vcl::unotools::rectangleFromIntegerRectangle2D(rect) );
OutputDevice& rOutDev( mpOutDevProvider->getOutDev() );
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
rOutDev.EnableMapMode( false );
rOutDev.SetAntialiasing( AntialiasingFlags::Enable );
Bitmap aBitmap( rOutDev.GetBitmapEx(aRect.TopLeft(),
aRect.GetSize()).GetBitmap() );
BitmapScopedReadAccess pReadAccess( aBitmap );
ENSURE_OR_THROW( pReadAccess.get() != nullptr,
"Could not acquire read access to OutDev bitmap" );
const sal_Int32 nWidth( rect.X2 - rect.X1 );
const sal_Int32 nHeight( rect.Y2 - rect.Y1 );
rLayout.ScanLines = nHeight;
rLayout.ScanLineBytes = nWidth*4;
rLayout.ScanLineStride = rLayout.ScanLineBytes;
uno::Sequence< sal_Int8 > aRes( 4*nWidth*nHeight );
sal_Int8* pRes = aRes.getArray();
int nCurrPos(0);
for( int y=0; y<nHeight; ++y )
{
for( int x=0; x<nWidth; ++x )
{
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetRed();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetGreen();
pRes[ nCurrPos++ ] = pReadAccess->GetColor( y, x ).GetBlue();
pRes[ nCurrPos++ ] = -1;
}
}
return aRes;
}
uno::Sequence< sal_Int8 > CanvasHelper::getPixel( rendering::IntegerBitmapLayout& rLayout,
const geometry::IntegerPoint2D& pos )
{
if( !mpOutDevProvider )
return uno::Sequence< sal_Int8 >(); // we're disposed
rLayout = getMemoryLayout();
rLayout.ScanLines = 1;
rLayout.ScanLineBytes = 4;
rLayout.ScanLineStride = rLayout.ScanLineBytes;
OutputDevice& rOutDev( mpOutDevProvider->getOutDev() );
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
rOutDev.EnableMapMode( false );
rOutDev.SetAntialiasing( AntialiasingFlags::Enable );
const Size aBmpSize( rOutDev.GetOutputSizePixel() );
ENSURE_ARG_OR_THROW( pos.X >= 0 && pos.X < aBmpSize.Width(),
"X coordinate out of bounds" );
ENSURE_ARG_OR_THROW( pos.Y >= 0 && pos.Y < aBmpSize.Height(),
"Y coordinate out of bounds" );
// TODO(F2): Support alpha canvas here
return ::canvas::tools::colorToStdIntSequence(
rOutDev.GetPixel(
vcl::unotools::pointFromIntegerPoint2D( pos )));
}
rendering::IntegerBitmapLayout CanvasHelper::getMemoryLayout()
{
if( !mpOutDevProvider )
return rendering::IntegerBitmapLayout(); // we're disposed
rendering::IntegerBitmapLayout aBitmapLayout( ::canvas::tools::getStdMemoryLayout(getSize()) );
if ( !mbHaveAlpha )
aBitmapLayout.ColorSpace = canvas::tools::getStdColorSpaceWithoutAlpha();
return aBitmapLayout;
}
int CanvasHelper::setupOutDevState( const rendering::ViewState& viewState,
const rendering::RenderState& renderState,
ColorType eColorType ) const
{
ENSURE_OR_THROW( mpOutDevProvider,
"outdev null. Are we disposed?" );
::canvas::tools::verifyInput( renderState,
__func__,
mpDevice,
2,
eColorType == IGNORE_COLOR ? 0 : 3 );
OutputDevice& rOutDev( mpOutDevProvider->getOutDev() );
OutputDevice* p2ndOutDev = nullptr;
rOutDev.EnableMapMode( false );
rOutDev.SetAntialiasing( AntialiasingFlags::Enable );
if( mp2ndOutDevProvider )
p2ndOutDev = &mp2ndOutDevProvider->getOutDev();
int nAlpha(255);
// TODO(P2): Don't change clipping all the time, maintain current clip
// state and change only when update is necessary
::canvas::tools::clipOutDev(viewState, renderState, rOutDev, p2ndOutDev);
Color aColor( COL_WHITE );
if( renderState.DeviceColor.getLength() > 2 )
{
aColor = vcl::unotools::stdColorSpaceSequenceToColor(
renderState.DeviceColor );
}
// extract alpha, and make color opaque
// afterwards. Otherwise, OutputDevice won't draw anything
nAlpha = aColor.GetAlpha();
aColor.SetAlpha(255);
if( eColorType != IGNORE_COLOR )
{
switch( eColorType )
{
case LINE_COLOR:
rOutDev.SetLineColor( aColor );
rOutDev.SetFillColor();
if( p2ndOutDev )
{
p2ndOutDev->SetLineColor( aColor );
p2ndOutDev->SetFillColor();
}
break;
case FILL_COLOR:
rOutDev.SetFillColor( aColor );
rOutDev.SetLineColor();
if( p2ndOutDev )
{
p2ndOutDev->SetFillColor( aColor );
p2ndOutDev->SetLineColor();
}
break;
case TEXT_COLOR:
rOutDev.SetTextColor( aColor );
if( p2ndOutDev )
p2ndOutDev->SetTextColor( aColor );
break;
default:
ENSURE_OR_THROW( false,
"Unexpected color type");
break;
}
}
return nAlpha;
}
bool CanvasHelper::setupTextOutput( ::Point& o_rOutPos,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState,
const uno::Reference< rendering::XCanvasFont >& xFont ) const
{
ENSURE_OR_THROW( mpOutDevProvider,
"outdev null. Are we disposed?" );
OutputDevice& rOutDev( mpOutDevProvider->getOutDev() );
setupOutDevState( viewState, renderState, TEXT_COLOR );
CanvasFont* pFont = dynamic_cast< CanvasFont* >( xFont.get() );
ENSURE_ARG_OR_THROW( pFont,
"Font not compatible with this canvas" );
vcl::Font aVCLFont = pFont->getVCLFont();
Color aColor( COL_BLACK );
if( renderState.DeviceColor.getLength() > 2 )
{
aColor = vcl::unotools::stdColorSpaceSequenceToColor(
renderState.DeviceColor );
}
// setup font color
aVCLFont.SetColor( aColor );
aVCLFont.SetFillColor( aColor );
// no need to replicate this for mp2ndOutDev, we're modifying only aVCLFont here.
if( !tools::setupFontTransform( o_rOutPos, aVCLFont, viewState, renderState, rOutDev ) )
return false;
rOutDev.SetFont( aVCLFont );
if( mp2ndOutDevProvider )
mp2ndOutDevProvider->getOutDev().SetFont( aVCLFont );
return true;
}
bool CanvasHelper::repaint( const GraphicObjectSharedPtr& rGrf,
const rendering::ViewState& viewState,
const rendering::RenderState& renderState,
const ::Point& rPt,
const ::Size& rSz,
const GraphicAttr& rAttr ) const
{
ENSURE_OR_RETURN_FALSE( rGrf,
"Invalid Graphic" );
if( !mpOutDevProvider )
return false; // disposed
else
{
tools::OutDevStateKeeper aStateKeeper( mpProtectedOutDevProvider );
setupOutDevState( viewState, renderState, IGNORE_COLOR );
if (!rGrf->Draw(mpOutDevProvider->getOutDev(), rPt, rSz, &rAttr))
return false;
// #i80779# Redraw also into mask outdev
if (mp2ndOutDevProvider)
return rGrf->Draw(mp2ndOutDevProvider->getOutDev(), rPt, rSz, &rAttr);
return true;
}
}
void CanvasHelper::flush() const
{
if (mpOutDevProvider)
mpOutDevProvider->getOutDev().Flush();
if (mp2ndOutDevProvider)
mp2ndOutDevProvider->getOutDev().Flush();
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V530 The return value of function 'mergeViewAndRenderTransform' is required to be utilized.
↑ V530 The return value of function 'mergeViewAndRenderTransform' is required to be utilized.