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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(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(aTranslate.getX()) );
+ o_rPoint.setY( ::basegfx::fround(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(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: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 13:05:56 +0000