diff options
Diffstat (limited to 'canvas/source/directx/dx_textlayout_drawhelper.cxx')
| -rwxr-xr-x | canvas/source/directx/dx_textlayout_drawhelper.cxx | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/canvas/source/directx/dx_textlayout_drawhelper.cxx b/canvas/source/directx/dx_textlayout_drawhelper.cxx new file mode 100755 index 000000000000..56ec00e9a648 --- /dev/null +++ b/canvas/source/directx/dx_textlayout_drawhelper.cxx @@ -0,0 +1,312 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_canvas.hxx" + +#include <tools/poly.hxx> + +#include <vcl/metric.hxx> +#include <vcl/virdev.hxx> +#include <vcl/metric.hxx> +#include <vcl/canvastools.hxx> +#include <tools/diagnose_ex.h> + +#include <boost/scoped_array.hpp> +#include <boost/bind.hpp> +#include <com/sun/star/rendering/FontRequest.hpp> +#include <com/sun/star/rendering/XCanvasFont.hpp> +#include <comphelper/sequence.hxx> +#include <comphelper/scopeguard.hxx> +#include <tools/color.hxx> +#include <basegfx/polygon/b2dpolypolygon.hxx> +#include <basegfx/tools/canvastools.hxx> +#include <canvas/canvastools.hxx> +#include <canvas/debug.hxx> +#include "dx_impltools.hxx" +#include <vcl/sysdata.hxx> +#include <i18npool/mslangid.hxx> +#include "dx_textlayout_drawhelper.hxx" +#include "dx_bitmap.hxx" +#include "dx_canvasfont.hxx" + +class ::com::sun::star::rendering::XCanvasFont; + +using namespace ::com::sun::star; + + +////////////////////////////////////////////////////////////////////////////// + +namespace dxcanvas +{ + class DXBitmap; + TextLayoutDrawHelper::TextLayoutDrawHelper( + const uno::Reference< rendering::XGraphicDevice >& xGraphicDevice ) : + mxGraphicDevice(xGraphicDevice) + { + } + + TextLayoutDrawHelper::~TextLayoutDrawHelper() + { + } + + void TextLayoutDrawHelper::drawText( + const GraphicsSharedPtr& rGraphics, + const ::com::sun::star::rendering::ViewState& rViewState, + const ::com::sun::star::rendering::RenderState& rRenderState, + const ::basegfx::B2ISize& rOutputOffset, + const ::com::sun::star::rendering::StringContext& rText, + const ::com::sun::star::uno::Sequence< double >& rLogicalAdvancements, + const ::com::sun::star::uno::Reference< + ::com::sun::star::rendering::XCanvasFont >& rCanvasFont, + const ::com::sun::star::geometry::Matrix2D& rFontMatrix, + bool bAlphaSurface ) + { + HDC hdc = rGraphics->GetHDC(); + + // issue an ReleaseHDC() when leaving the scope + const ::comphelper::ScopeGuard aGuard( + boost::bind( &Gdiplus::Graphics::ReleaseHDC, + rGraphics.get(), + hdc )); + + SystemGraphicsData aSystemGraphicsData; + aSystemGraphicsData.nSize = sizeof(SystemGraphicsData); + aSystemGraphicsData.hDC = reinterpret_cast< ::HDC >(hdc); + VirtualDevice aVirtualDevice(&aSystemGraphicsData, 0); + + // disable font antialiasing - GDI does not handle alpha + // surfaces properly. + if( bAlphaSurface ) + aVirtualDevice.SetAntialiasing(ANTIALIASING_DISABLE_TEXT); + + if(rText.Length) + { + sal_Bool test = mxGraphicDevice.is(); + ENSURE_OR_THROW( test, + "TextLayoutDrawHelper::drawText(): Invalid GraphicDevice" ); + + // set text color. Make sure to remove transparence part first. + Color aColor( COL_WHITE ); + + if( rRenderState.DeviceColor.getLength() > 2 ) + aColor = ::vcl::unotools::doubleSequenceToColor( + rRenderState.DeviceColor, + mxGraphicDevice->getDeviceColorSpace()); + aColor.SetTransparency(0); + aVirtualDevice.SetTextColor(aColor); + + // create the font + const ::com::sun::star::rendering::FontRequest& rFontRequest = rCanvasFont->getFontRequest(); + Font aFont( + rFontRequest.FontDescription.FamilyName, + rFontRequest.FontDescription.StyleName, + Size( 0, ::basegfx::fround(rFontRequest.CellSize))); + + aFont.SetAlign( ALIGN_BASELINE ); + aFont.SetCharSet( (rFontRequest.FontDescription.IsSymbolFont==com::sun::star::util::TriState_YES) ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE ); + aFont.SetVertical( (rFontRequest.FontDescription.IsVertical==com::sun::star::util::TriState_YES) ? TRUE : FALSE ); + aFont.SetWeight( static_cast<FontWeight>(rFontRequest.FontDescription.FontDescription.Weight) ); + aFont.SetItalic( (rFontRequest.FontDescription.FontDescription.Letterform<=8) ? ITALIC_NONE : ITALIC_NORMAL ); + + aFont.SetLanguage(MsLangId::convertLocaleToLanguage(rFontRequest.Locale)); + + // setup font color + aFont.SetColor( aColor ); + aFont.SetFillColor( aColor ); + + // adjust to stretched font + if(!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11)) + { + const Size aSize = aVirtualDevice.GetFontMetric( aFont ).GetSize(); + const double fDividend( rFontMatrix.m10 + rFontMatrix.m11 ); + double fStretch = (rFontMatrix.m00 + rFontMatrix.m01); + + if( !::basegfx::fTools::equalZero( fDividend) ) + fStretch /= fDividend; + + const sal_Int32 nNewWidth = ::basegfx::fround( aSize.Width() * fStretch ); + + aFont.SetWidth( nNewWidth ); + } + + // set font + aVirtualDevice.SetFont(aFont); + + // create world transformation matrix + ::basegfx::B2DHomMatrix aWorldTransform; + ::canvas::tools::mergeViewAndRenderTransform(aWorldTransform, rViewState, rRenderState); + + if(!rOutputOffset.equalZero()) + { + aWorldTransform.translate(rOutputOffset.getX(), rOutputOffset.getY()); + } + + // set ViewState clipping + if(rViewState.Clip.is()) + { + ::basegfx::B2DPolyPolygon aClipPoly(dxcanvas::tools::polyPolygonFromXPolyPolygon2D(rViewState.Clip)); + ::basegfx::B2DHomMatrix aMatrix; + ::basegfx::unotools::homMatrixFromAffineMatrix(aMatrix, rViewState.AffineTransform ); + + if(!rOutputOffset.equalZero()) + { + aMatrix.translate(rOutputOffset.getX(), rOutputOffset.getY()); + } + + aClipPoly.transform(aMatrix); + const Region& rClipRegion = Region(PolyPolygon(aClipPoly)); + aVirtualDevice.IntersectClipRegion(rClipRegion); + } + + if(rRenderState.Clip.is()) + { + ::basegfx::B2DPolyPolygon aClipPoly(dxcanvas::tools::polyPolygonFromXPolyPolygon2D(rRenderState.Clip)); + aClipPoly.transform(aWorldTransform); + const Region& rClipRegion = Region(PolyPolygon(aClipPoly)); + aVirtualDevice.IntersectClipRegion(rClipRegion); + } + + // set world transform + XFORM aXForm; + aXForm.eM11 = (FLOAT)aWorldTransform.get(0, 0); + aXForm.eM12 = (FLOAT)aWorldTransform.get(1, 0); + aXForm.eM21 = (FLOAT)aWorldTransform.get(0, 1); + aXForm.eM22 = (FLOAT)aWorldTransform.get(1, 1); + aXForm.eDx = (FLOAT)aWorldTransform.get(0, 2); + aXForm.eDy = (FLOAT)aWorldTransform.get(1, 2); + + // TODO(F3): This is NOT supported on 95/98/ME! + SetGraphicsMode(hdc, GM_ADVANCED); + SetTextAlign(hdc, TA_BASELINE); + SetWorldTransform(hdc, &aXForm); + + // use a empty StartPosition for text rendering + const Point aEmptyPoint(0, 0); + + // create the String + const String aText(rText.Text.getStr()); + + if( rLogicalAdvancements.getLength() ) + { + // create the DXArray + const sal_Int32 nLen( rLogicalAdvancements.getLength() ); + ::boost::scoped_array<sal_Int32> pDXArray( new sal_Int32[nLen] ); + for( sal_Int32 i=0; i<nLen; ++i ) + pDXArray[i] = basegfx::fround( rLogicalAdvancements[i] ); + + // draw the String + aVirtualDevice.DrawTextArray( aEmptyPoint, + aText, + pDXArray.get(), + (xub_StrLen)rText.StartPosition, + (xub_StrLen)rText.Length ); + } + else + { + // draw the String + aVirtualDevice.DrawText( aEmptyPoint, + aText, + (xub_StrLen)rText.StartPosition, + (xub_StrLen)rText.Length ); + } + } + } + + geometry::RealRectangle2D TextLayoutDrawHelper::queryTextBounds( const rendering::StringContext& rText, + const uno::Sequence< double >& rLogicalAdvancements, + const uno::Reference< rendering::XCanvasFont >& rCanvasFont, + const geometry::Matrix2D& rFontMatrix ) + { + if(!(rText.Length)) + return geometry::RealRectangle2D(); + + // TODO(F1): Fetching default screen DC here, will yield wrong + // metrics when e.g. formatting for a printer! + SystemGraphicsData aSystemGraphicsData; + aSystemGraphicsData.nSize = sizeof(SystemGraphicsData); + aSystemGraphicsData.hDC = reinterpret_cast< ::HDC >(GetDC( NULL )); + VirtualDevice aVirtualDevice(&aSystemGraphicsData, 0); + + // create the font + const ::com::sun::star::rendering::FontRequest& rFontRequest = rCanvasFont->getFontRequest(); + Font aFont( + rFontRequest.FontDescription.FamilyName, + rFontRequest.FontDescription.StyleName, + Size( 0, ::basegfx::fround(rFontRequest.CellSize))); + + aFont.SetAlign( ALIGN_BASELINE ); + aFont.SetCharSet( (rFontRequest.FontDescription.IsSymbolFont==com::sun::star::util::TriState_YES) ? RTL_TEXTENCODING_SYMBOL : RTL_TEXTENCODING_UNICODE ); + aFont.SetVertical( (rFontRequest.FontDescription.IsVertical==com::sun::star::util::TriState_YES) ? TRUE : FALSE ); + aFont.SetWeight( static_cast<FontWeight>(rFontRequest.FontDescription.FontDescription.Weight) ); + aFont.SetItalic( (rFontRequest.FontDescription.FontDescription.Letterform<=8) ? ITALIC_NONE : ITALIC_NORMAL ); + + // adjust to stretched font + if(!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11)) + { + const Size aSize = aVirtualDevice.GetFontMetric( aFont ).GetSize(); + const double fDividend( rFontMatrix.m10 + rFontMatrix.m11 ); + double fStretch = (rFontMatrix.m00 + rFontMatrix.m01); + + if( !::basegfx::fTools::equalZero( fDividend) ) + fStretch /= fDividend; + + const sal_Int32 nNewWidth = ::basegfx::fround( aSize.Width() * fStretch ); + + aFont.SetWidth( nNewWidth ); + } + + // set font + aVirtualDevice.SetFont(aFont); + + // need metrics for Y offset, the XCanvas always renders + // relative to baseline + const ::FontMetric& aMetric( aVirtualDevice.GetFontMetric() ); + + const sal_Int32 nAboveBaseline( -aMetric.GetIntLeading() - aMetric.GetAscent() ); + const sal_Int32 nBelowBaseline( aMetric.GetDescent() ); + + if( rLogicalAdvancements.getLength() ) + { + return geometry::RealRectangle2D( 0, nAboveBaseline, + rLogicalAdvancements[ rLogicalAdvancements.getLength()-1 ], + nBelowBaseline ); + } + else + { + return geometry::RealRectangle2D( 0, nAboveBaseline, + aVirtualDevice.GetTextWidth( + rText.Text, + ::canvas::tools::numeric_cast<USHORT>(rText.StartPosition), + ::canvas::tools::numeric_cast<USHORT>(rText.Length) ), + nBelowBaseline ); + } + } +} + + +// eof |