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/* -*- 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/b2dpolygontools.hxx>
#include <basegfx/range/b2drectangle.hxx>
#include <basegfx/utils/canvastools.hxx>
#include <basegfx/tuple/b2dtuple.hxx>
#include <rtl/math.hxx>
#include <comphelper/diagnose_ex.hxx>
#include <sal/log.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/canvastools.hxx>
#include <vcl/BitmapTools.hxx>
#include <vcl/metric.hxx>
#include <vcl/skia/SkiaHelper.hxx>
#include <canvas/canvastools.hxx>
#include "canvasbitmap.hxx"
#include "impltools.hxx"
#include "spritecanvas.hxx"
using namespace ::com::sun::star;
namespace vclcanvas::tools
{
::BitmapEx bitmapExFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap )
{
// TODO(F3): CanvasCustomSprite should also be tunnelled
// through (also implements XIntegerBitmap interface)
CanvasBitmap* pBitmapImpl = dynamic_cast< CanvasBitmap* >( xBitmap.get() );
if( pBitmapImpl )
{
return pBitmapImpl->getBitmap();
}
else
{
SpriteCanvas* pCanvasImpl = dynamic_cast< SpriteCanvas* >( xBitmap.get() );
if( pCanvasImpl && pCanvasImpl->getBackBuffer() )
{
// TODO(F3): mind the plain Canvas impl. Consolidate with CWS canvas05
const ::OutputDevice& rDev( pCanvasImpl->getBackBuffer()->getOutDev() );
const ::Point aEmptyPoint;
return rDev.GetBitmapEx( aEmptyPoint,
rDev.GetOutputSizePixel() );
}
// TODO(F2): 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 bitmap" );
}
return ::BitmapEx();
}
bool setupFontTransform( ::Point& o_rPoint,
vcl::Font& io_rVCLFont,
const rendering::ViewState& rViewState,
const rendering::RenderState& rRenderState,
::OutputDevice const & rOutDev )
{
::basegfx::B2DHomMatrix aMatrix;
::canvas::tools::mergeViewAndRenderTransform(aMatrix,
rViewState,
rRenderState);
::basegfx::B2DTuple aScale;
::basegfx::B2DTuple aTranslate;
double nRotate, nShearX;
aMatrix.decompose( aScale, aTranslate, nRotate, nShearX );
// query font metric _before_ tampering with width and height
if( !::rtl::math::approxEqual(aScale.getX(), aScale.getY()) )
{
// retrieve true font width
const sal_Int32 nFontWidth( rOutDev.GetFontMetric( io_rVCLFont ).GetAverageFontWidth() );
const sal_Int32 nScaledFontWidth( ::basegfx::fround(nFontWidth * aScale.getX()) );
if( !nScaledFontWidth )
{
// scale is smaller than one pixel - disable text
// output altogether
return false;
}
io_rVCLFont.SetAverageFontWidth( nScaledFontWidth );
}
if( !::rtl::math::approxEqual(aScale.getY(), 1.0) )
{
const sal_Int32 nFontHeight( io_rVCLFont.GetFontHeight() );
io_rVCLFont.SetFontHeight( ::basegfx::fround<::tools::Long>(nFontHeight * aScale.getY()) );
}
io_rVCLFont.SetOrientation( Degree10( ::basegfx::fround(-basegfx::rad2deg<10>(fmod(nRotate, 2*M_PI))) ) );
// TODO(F2): Missing functionality in VCL: shearing
o_rPoint.setX( ::basegfx::fround<::tools::Long>(aTranslate.getX()) );
o_rPoint.setY( ::basegfx::fround<::tools::Long>(aTranslate.getY()) );
return true;
}
void setupFontWidth(const css::geometry::Matrix2D& rFontMatrix,
vcl::Font& rFont,
OutputDevice& rOutDev)
{
rFont.SetFontSize(Size(0, rFont.GetFontHeight()));
if (!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11))
{
const bool bOldMapState(rOutDev.IsMapModeEnabled());
rOutDev.EnableMapMode(false);
const Size aSize = rOutDev.GetFontMetric(rFont).GetFontSize();
const double fDividend(rFontMatrix.m10 + rFontMatrix.m11);
double fStretch = rFontMatrix.m00 + rFontMatrix.m01;
if (!::basegfx::fTools::equalZero(fDividend))
fStretch /= fDividend;
const ::tools::Long nNewWidth = ::basegfx::fround<::tools::Long>(aSize.Width() * fStretch);
rFont.SetAverageFontWidth(nNewWidth);
rOutDev.EnableMapMode(bOldMapState);
}
}
bool isRectangle( const ::tools::PolyPolygon& rPolyPoly )
{
// exclude some cheap cases first
if( rPolyPoly.Count() != 1 )
return false;
const ::tools::Polygon& rPoly( rPolyPoly[0] );
sal_uInt16 nCount( rPoly.GetSize() );
if( nCount < 4 )
return false;
// delegate to basegfx
return ::basegfx::utils::isRectangle( rPoly.getB2DPolygon() );
}
// VCL-Canvas related
::Point mapRealPoint2D( const geometry::RealPoint2D& rPoint,
const rendering::ViewState& rViewState,
const rendering::RenderState& rRenderState )
{
::basegfx::B2DPoint aPoint( ::basegfx::unotools::b2DPointFromRealPoint2D(rPoint) );
::basegfx::B2DHomMatrix aMatrix;
aPoint *= ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
rViewState,
rRenderState);
return vcl::unotools::pointFromB2DPoint( aPoint );
}
::tools::PolyPolygon mapPolyPolygon( const ::basegfx::B2DPolyPolygon& rPoly,
const rendering::ViewState& rViewState,
const rendering::RenderState& rRenderState )
{
::basegfx::B2DHomMatrix aMatrix;
::canvas::tools::mergeViewAndRenderTransform(aMatrix,
rViewState,
rRenderState);
::basegfx::B2DPolyPolygon aTemp( rPoly );
aTemp.transform( aMatrix );
return ::tools::PolyPolygon( aTemp );
}
::BitmapEx transformBitmap( const BitmapEx& rBitmap,
const ::basegfx::B2DHomMatrix& rTransform )
{
SAL_INFO( "canvas.vcl", "::vclcanvas::tools::transformBitmap()" );
SAL_INFO( "canvas.vcl", "::vclcanvas::tools::transformBitmap: 0x" << std::hex << &rBitmap );
// calc transformation and size of bitmap to be
// generated. Note, that the translational components are
// deleted from the transformation; this can be handled by
// an offset when painting the bitmap
const Size aBmpSize( rBitmap.GetSizePixel() );
::basegfx::B2DRectangle aDestRect;
// calc effective transformation for bitmap
const ::basegfx::B2DRectangle aSrcRect( 0, 0,
aBmpSize.Width(),
aBmpSize.Height() );
::canvas::tools::calcTransformedRectBounds( aDestRect,
aSrcRect,
rTransform );
// re-center bitmap, such that it's left, top border is
// aligned with (0,0). The method takes the given
// rectangle, and calculates a transformation that maps
// this rectangle unscaled to the origin.
::basegfx::B2DHomMatrix aLocalTransform;
::canvas::tools::calcRectToOriginTransform( aLocalTransform,
aSrcRect,
rTransform );
return vcl::bitmap::CanvasTransformBitmap(rBitmap, rTransform, aDestRect, aLocalTransform);
}
void SetDefaultDeviceAntiAliasing( OutputDevice* pDevice )
{
#if defined( MACOSX )
// use AA on VCLCanvas for Mac
pDevice->SetAntialiasing( AntialiasingFlags::Enable | pDevice->GetAntialiasing() );
#else
// switch off AA for WIN32 and UNIX, the VCLCanvas does not look good with it and
// is not required to do AA. It would need to be adapted to use it correctly
// (especially gradient painting). This will need extra work.
if( SkiaHelper::isVCLSkiaEnabled()) // But Skia handles AA fine.
pDevice->SetAntialiasing( AntialiasingFlags::Enable | pDevice->GetAntialiasing() );
else
pDevice->SetAntialiasing(pDevice->GetAntialiasing() & ~AntialiasingFlags::Enable);
#endif
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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