1*25ea7f45SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*25ea7f45SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*25ea7f45SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*25ea7f45SAndrew Rist * distributed with this work for additional information 6*25ea7f45SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*25ea7f45SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*25ea7f45SAndrew Rist * "License"); you may not use this file except in compliance 9*25ea7f45SAndrew Rist * with the License. You may obtain a copy of the License at 10*25ea7f45SAndrew Rist * 11*25ea7f45SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*25ea7f45SAndrew Rist * 13*25ea7f45SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*25ea7f45SAndrew Rist * software distributed under the License is distributed on an 15*25ea7f45SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*25ea7f45SAndrew Rist * KIND, either express or implied. See the License for the 17*25ea7f45SAndrew Rist * specific language governing permissions and limitations 18*25ea7f45SAndrew Rist * under the License. 19*25ea7f45SAndrew Rist * 20*25ea7f45SAndrew Rist *************************************************************/ 21*25ea7f45SAndrew Rist 22*25ea7f45SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove 25cdf0e10cSrcweir #include "precompiled_canvas.hxx" 26cdf0e10cSrcweir 27cdf0e10cSrcweir #include <canvas/debug.hxx> 28cdf0e10cSrcweir #include <canvas/canvastools.hxx> 29cdf0e10cSrcweir #include <tools/diagnose_ex.h> 30cdf0e10cSrcweir 31cdf0e10cSrcweir #include <vcl/virdev.hxx> 32cdf0e10cSrcweir #include <vcl/metric.hxx> 33cdf0e10cSrcweir #include <vcl/canvastools.hxx> 34cdf0e10cSrcweir 35cdf0e10cSrcweir #include <basegfx/polygon/b2dpolypolygon.hxx> 36cdf0e10cSrcweir #include <basegfx/tools/canvastools.hxx> 37cdf0e10cSrcweir 38cdf0e10cSrcweir #include "cairo_canvasfont.hxx" 39cdf0e10cSrcweir #include "cairo_textlayout.hxx" 40cdf0e10cSrcweir #include "cairo_canvashelper.hxx" 41cdf0e10cSrcweir 42cdf0e10cSrcweir using namespace ::cairo; 43cdf0e10cSrcweir using namespace ::com::sun::star; 44cdf0e10cSrcweir 45cdf0e10cSrcweir namespace cairocanvas 46cdf0e10cSrcweir { 47cdf0e10cSrcweir enum ColorType 48cdf0e10cSrcweir { 49cdf0e10cSrcweir LINE_COLOR, FILL_COLOR, TEXT_COLOR, IGNORE_COLOR 50cdf0e10cSrcweir }; 51cdf0e10cSrcweir createFont(const rendering::XCanvas *,const rendering::FontRequest & fontRequest,const uno::Sequence<beans::PropertyValue> & extraFontProperties,const geometry::Matrix2D & fontMatrix)52cdf0e10cSrcweir uno::Reference< rendering::XCanvasFont > CanvasHelper::createFont( const rendering::XCanvas* , 53cdf0e10cSrcweir const rendering::FontRequest& fontRequest, 54cdf0e10cSrcweir const uno::Sequence< beans::PropertyValue >& extraFontProperties, 55cdf0e10cSrcweir const geometry::Matrix2D& fontMatrix ) 56cdf0e10cSrcweir { 57cdf0e10cSrcweir return uno::Reference< rendering::XCanvasFont >( new CanvasFont( fontRequest, extraFontProperties, fontMatrix, mpSurfaceProvider )); 58cdf0e10cSrcweir } 59cdf0e10cSrcweir queryAvailableFonts(const rendering::XCanvas *,const rendering::FontInfo &,const uno::Sequence<beans::PropertyValue> &)60cdf0e10cSrcweir uno::Sequence< rendering::FontInfo > CanvasHelper::queryAvailableFonts( const rendering::XCanvas* , 61cdf0e10cSrcweir const rendering::FontInfo& /*aFilter*/, 62cdf0e10cSrcweir const uno::Sequence< beans::PropertyValue >& /*aFontProperties*/ ) 63cdf0e10cSrcweir { 64cdf0e10cSrcweir // TODO 65cdf0e10cSrcweir return uno::Sequence< rendering::FontInfo >(); 66cdf0e10cSrcweir } 67cdf0e10cSrcweir 68cdf0e10cSrcweir static bool setupFontTransform(::OutputDevice & rOutDev,::Point & o_rPoint,::Font & io_rVCLFont,const rendering::ViewState & rViewState,const rendering::RenderState & rRenderState)69cdf0e10cSrcweir setupFontTransform( ::OutputDevice& rOutDev, 70cdf0e10cSrcweir ::Point& o_rPoint, 71cdf0e10cSrcweir ::Font& io_rVCLFont, 72cdf0e10cSrcweir const rendering::ViewState& rViewState, 73cdf0e10cSrcweir const rendering::RenderState& rRenderState ) 74cdf0e10cSrcweir { 75cdf0e10cSrcweir ::basegfx::B2DHomMatrix aMatrix; 76cdf0e10cSrcweir 77cdf0e10cSrcweir ::canvas::tools::mergeViewAndRenderTransform(aMatrix, 78cdf0e10cSrcweir rViewState, 79cdf0e10cSrcweir rRenderState); 80cdf0e10cSrcweir 81cdf0e10cSrcweir ::basegfx::B2DTuple aScale; 82cdf0e10cSrcweir ::basegfx::B2DTuple aTranslate; 83cdf0e10cSrcweir double nRotate, nShearX; 84cdf0e10cSrcweir 85cdf0e10cSrcweir aMatrix.decompose( aScale, aTranslate, nRotate, nShearX ); 86cdf0e10cSrcweir 87cdf0e10cSrcweir // query font metric _before_ tampering with width and height 88cdf0e10cSrcweir if( !::rtl::math::approxEqual(aScale.getX(), aScale.getY()) ) 89cdf0e10cSrcweir { 90cdf0e10cSrcweir // retrieve true font width 91cdf0e10cSrcweir const sal_Int32 nFontWidth( rOutDev.GetFontMetric( io_rVCLFont ).GetWidth() ); 92cdf0e10cSrcweir 93cdf0e10cSrcweir const sal_Int32 nScaledFontWidth( ::basegfx::fround(nFontWidth * aScale.getX()) ); 94cdf0e10cSrcweir 95cdf0e10cSrcweir if( !nScaledFontWidth ) 96cdf0e10cSrcweir { 97cdf0e10cSrcweir // scale is smaller than one pixel - disable text 98cdf0e10cSrcweir // output altogether 99cdf0e10cSrcweir return false; 100cdf0e10cSrcweir } 101cdf0e10cSrcweir 102cdf0e10cSrcweir io_rVCLFont.SetWidth( nScaledFontWidth ); 103cdf0e10cSrcweir } 104cdf0e10cSrcweir 105cdf0e10cSrcweir if( !::rtl::math::approxEqual(aScale.getY(), 1.0) ) 106cdf0e10cSrcweir { 107cdf0e10cSrcweir const sal_Int32 nFontHeight( io_rVCLFont.GetHeight() ); 108cdf0e10cSrcweir io_rVCLFont.SetHeight( ::basegfx::fround(nFontHeight * aScale.getY()) ); 109cdf0e10cSrcweir } 110cdf0e10cSrcweir 111cdf0e10cSrcweir io_rVCLFont.SetOrientation( static_cast< short >( ::basegfx::fround(-fmod(nRotate, 2*M_PI)*(1800.0/M_PI)) ) ); 112cdf0e10cSrcweir 113cdf0e10cSrcweir // TODO(F2): Missing functionality in VCL: shearing 114cdf0e10cSrcweir o_rPoint.X() = ::basegfx::fround(aTranslate.getX()); 115cdf0e10cSrcweir o_rPoint.Y() = ::basegfx::fround(aTranslate.getY()); 116cdf0e10cSrcweir 117cdf0e10cSrcweir return true; 118cdf0e10cSrcweir } 119cdf0e10cSrcweir 120cdf0e10cSrcweir static int setupOutDevState(OutputDevice & rOutDev,const rendering::XCanvas * pOwner,const rendering::ViewState & viewState,const rendering::RenderState & renderState,ColorType eColorType)121cdf0e10cSrcweir setupOutDevState( OutputDevice& rOutDev, 122cdf0e10cSrcweir const rendering::XCanvas* pOwner, 123cdf0e10cSrcweir const rendering::ViewState& viewState, 124cdf0e10cSrcweir const rendering::RenderState& renderState, 125cdf0e10cSrcweir ColorType eColorType ) 126cdf0e10cSrcweir { 127cdf0e10cSrcweir ::canvas::tools::verifyInput( renderState, 128cdf0e10cSrcweir BOOST_CURRENT_FUNCTION, 129cdf0e10cSrcweir const_cast<rendering::XCanvas*>(pOwner), // only for refcount 130cdf0e10cSrcweir 2, 131cdf0e10cSrcweir eColorType == IGNORE_COLOR ? 0 : 3 ); 132cdf0e10cSrcweir 133cdf0e10cSrcweir int nTransparency(0); 134cdf0e10cSrcweir 135cdf0e10cSrcweir // TODO(P2): Don't change clipping all the time, maintain current clip 136cdf0e10cSrcweir // state and change only when update is necessary 137cdf0e10cSrcweir 138cdf0e10cSrcweir // accumulate non-empty clips into one region 139cdf0e10cSrcweir // ========================================== 140cdf0e10cSrcweir 141cdf0e10cSrcweir Region aClipRegion; 142cdf0e10cSrcweir 143cdf0e10cSrcweir if( viewState.Clip.is() ) 144cdf0e10cSrcweir { 145cdf0e10cSrcweir ::basegfx::B2DPolyPolygon aClipPoly( 146cdf0e10cSrcweir ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D( 147cdf0e10cSrcweir viewState.Clip) ); 148cdf0e10cSrcweir 149cdf0e10cSrcweir if( aClipPoly.count() ) 150cdf0e10cSrcweir { 151cdf0e10cSrcweir // setup non-empty clipping 152cdf0e10cSrcweir ::basegfx::B2DHomMatrix aMatrix; 153cdf0e10cSrcweir aClipPoly.transform( 154cdf0e10cSrcweir ::basegfx::unotools::homMatrixFromAffineMatrix( aMatrix, 155cdf0e10cSrcweir viewState.AffineTransform ) ); 156cdf0e10cSrcweir 157cdf0e10cSrcweir aClipRegion = Region::GetRegionFromPolyPolygon( ::PolyPolygon( aClipPoly ) ); 158cdf0e10cSrcweir } 159cdf0e10cSrcweir } 160cdf0e10cSrcweir 161cdf0e10cSrcweir if( renderState.Clip.is() ) 162cdf0e10cSrcweir { 163cdf0e10cSrcweir ::basegfx::B2DPolyPolygon aClipPoly( 164cdf0e10cSrcweir ::basegfx::unotools::b2DPolyPolygonFromXPolyPolygon2D( 165cdf0e10cSrcweir renderState.Clip) ); 166cdf0e10cSrcweir 167cdf0e10cSrcweir ::basegfx::B2DHomMatrix aMatrix; 168cdf0e10cSrcweir aClipPoly.transform( 169cdf0e10cSrcweir ::canvas::tools::mergeViewAndRenderTransform( aMatrix, 170cdf0e10cSrcweir viewState, 171cdf0e10cSrcweir renderState ) ); 172cdf0e10cSrcweir 173cdf0e10cSrcweir if( aClipPoly.count() ) 174cdf0e10cSrcweir { 175cdf0e10cSrcweir // setup non-empty clipping 176cdf0e10cSrcweir Region aRegion = Region::GetRegionFromPolyPolygon( ::PolyPolygon( aClipPoly ) ); 177cdf0e10cSrcweir 178cdf0e10cSrcweir if( aClipRegion.IsEmpty() ) 179cdf0e10cSrcweir aClipRegion = aRegion; 180cdf0e10cSrcweir else 181cdf0e10cSrcweir aClipRegion.Intersect( aRegion ); 182cdf0e10cSrcweir } 183cdf0e10cSrcweir else 184cdf0e10cSrcweir { 185cdf0e10cSrcweir // clip polygon is empty 186cdf0e10cSrcweir aClipRegion.SetEmpty(); 187cdf0e10cSrcweir } 188cdf0e10cSrcweir } 189cdf0e10cSrcweir 190cdf0e10cSrcweir // setup accumulated clip region. Note that setting an 191cdf0e10cSrcweir // empty clip region denotes "clip everything" on the 192cdf0e10cSrcweir // OutputDevice (which is why we translate that into 193cdf0e10cSrcweir // SetClipRegion() here). When both view and render clip 194cdf0e10cSrcweir // are empty, aClipRegion remains default-constructed, 195cdf0e10cSrcweir // i.e. empty, too. 196cdf0e10cSrcweir if( aClipRegion.IsEmpty() ) 197cdf0e10cSrcweir { 198cdf0e10cSrcweir rOutDev.SetClipRegion(); 199cdf0e10cSrcweir } 200cdf0e10cSrcweir else 201cdf0e10cSrcweir { 202cdf0e10cSrcweir rOutDev.SetClipRegion( aClipRegion ); 203cdf0e10cSrcweir } 204cdf0e10cSrcweir 205cdf0e10cSrcweir if( eColorType != IGNORE_COLOR ) 206cdf0e10cSrcweir { 207cdf0e10cSrcweir Color aColor( COL_WHITE ); 208cdf0e10cSrcweir 209cdf0e10cSrcweir if( renderState.DeviceColor.getLength() > 2 ) 210cdf0e10cSrcweir { 211cdf0e10cSrcweir aColor = ::vcl::unotools::stdColorSpaceSequenceToColor( renderState.DeviceColor ); 212cdf0e10cSrcweir } 213cdf0e10cSrcweir 214cdf0e10cSrcweir // extract alpha, and make color opaque 215cdf0e10cSrcweir // afterwards. Otherwise, OutputDevice won't draw anything 216cdf0e10cSrcweir nTransparency = aColor.GetTransparency(); 217cdf0e10cSrcweir aColor.SetTransparency(0); 218cdf0e10cSrcweir 219cdf0e10cSrcweir switch( eColorType ) 220cdf0e10cSrcweir { 221cdf0e10cSrcweir case LINE_COLOR: 222cdf0e10cSrcweir rOutDev.SetLineColor( aColor ); 223cdf0e10cSrcweir rOutDev.SetFillColor(); 224cdf0e10cSrcweir 225cdf0e10cSrcweir break; 226cdf0e10cSrcweir 227cdf0e10cSrcweir case FILL_COLOR: 228cdf0e10cSrcweir rOutDev.SetFillColor( aColor ); 229cdf0e10cSrcweir rOutDev.SetLineColor(); 230cdf0e10cSrcweir 231cdf0e10cSrcweir break; 232cdf0e10cSrcweir 233cdf0e10cSrcweir case TEXT_COLOR: 234cdf0e10cSrcweir rOutDev.SetTextColor( aColor ); 235cdf0e10cSrcweir 236cdf0e10cSrcweir break; 237cdf0e10cSrcweir 238cdf0e10cSrcweir default: 239cdf0e10cSrcweir ENSURE_OR_THROW( false, 240cdf0e10cSrcweir "CanvasHelper::setupOutDevState(): Unexpected color type"); 241cdf0e10cSrcweir break; 242cdf0e10cSrcweir } 243cdf0e10cSrcweir } 244cdf0e10cSrcweir 245cdf0e10cSrcweir return nTransparency; 246cdf0e10cSrcweir } 247cdf0e10cSrcweir setupTextOutput(OutputDevice & rOutDev,const rendering::XCanvas * pOwner,::Point & o_rOutPos,const rendering::ViewState & viewState,const rendering::RenderState & renderState,const uno::Reference<rendering::XCanvasFont> & xFont)248cdf0e10cSrcweir bool setupTextOutput( OutputDevice& rOutDev, 249cdf0e10cSrcweir const rendering::XCanvas* pOwner, 250cdf0e10cSrcweir ::Point& o_rOutPos, 251cdf0e10cSrcweir const rendering::ViewState& viewState, 252cdf0e10cSrcweir const rendering::RenderState& renderState, 253cdf0e10cSrcweir const uno::Reference< rendering::XCanvasFont >& xFont ) 254cdf0e10cSrcweir { 255cdf0e10cSrcweir setupOutDevState( rOutDev, pOwner, viewState, renderState, TEXT_COLOR ); 256cdf0e10cSrcweir 257cdf0e10cSrcweir ::Font aVCLFont; 258cdf0e10cSrcweir 259cdf0e10cSrcweir CanvasFont* pFont = dynamic_cast< CanvasFont* >( xFont.get() ); 260cdf0e10cSrcweir 261cdf0e10cSrcweir ENSURE_ARG_OR_THROW( pFont, 262cdf0e10cSrcweir "CanvasHelper::setupTextOutput(): Font not compatible with this canvas" ); 263cdf0e10cSrcweir 264cdf0e10cSrcweir aVCLFont = pFont->getVCLFont(); 265cdf0e10cSrcweir 266cdf0e10cSrcweir Color aColor( COL_BLACK ); 267cdf0e10cSrcweir 268cdf0e10cSrcweir if( renderState.DeviceColor.getLength() > 2 ) 269cdf0e10cSrcweir { 270cdf0e10cSrcweir aColor = ::vcl::unotools::stdColorSpaceSequenceToColor(renderState.DeviceColor ); 271cdf0e10cSrcweir } 272cdf0e10cSrcweir 273cdf0e10cSrcweir // setup font color 274cdf0e10cSrcweir aVCLFont.SetColor( aColor ); 275cdf0e10cSrcweir aVCLFont.SetFillColor( aColor ); 276cdf0e10cSrcweir 277cdf0e10cSrcweir // no need to replicate this for mp2ndOutDev, we're modifying only aVCLFont here. 278cdf0e10cSrcweir if( !setupFontTransform( rOutDev, o_rOutPos, aVCLFont, viewState, renderState ) ) 279cdf0e10cSrcweir return false; 280cdf0e10cSrcweir 281cdf0e10cSrcweir rOutDev.SetFont( aVCLFont ); 282cdf0e10cSrcweir 283cdf0e10cSrcweir 284cdf0e10cSrcweir return true; 285cdf0e10cSrcweir } 286cdf0e10cSrcweir drawText(const rendering::XCanvas * pOwner,const rendering::StringContext & text,const uno::Reference<rendering::XCanvasFont> & xFont,const rendering::ViewState & viewState,const rendering::RenderState & renderState,sal_Int8 textDirection)287cdf0e10cSrcweir uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawText( const rendering::XCanvas* pOwner, 288cdf0e10cSrcweir const rendering::StringContext& text, 289cdf0e10cSrcweir const uno::Reference< rendering::XCanvasFont >& xFont, 290cdf0e10cSrcweir const rendering::ViewState& viewState, 291cdf0e10cSrcweir const rendering::RenderState& renderState, 292cdf0e10cSrcweir sal_Int8 textDirection ) 293cdf0e10cSrcweir { 294cdf0e10cSrcweir #ifdef CAIRO_CANVAS_PERF_TRACE 295cdf0e10cSrcweir struct timespec aTimer; 296cdf0e10cSrcweir mxDevice->startPerfTrace( &aTimer ); 297cdf0e10cSrcweir #endif 298cdf0e10cSrcweir 299cdf0e10cSrcweir ENSURE_ARG_OR_THROW( xFont.is(), 300cdf0e10cSrcweir "CanvasHelper::drawText(): font is NULL"); 301cdf0e10cSrcweir 302cdf0e10cSrcweir if( !mpVirtualDevice ) 303cdf0e10cSrcweir mpVirtualDevice = mpSurface->createVirtualDevice(); 304cdf0e10cSrcweir 305cdf0e10cSrcweir if( mpVirtualDevice ) 306cdf0e10cSrcweir { 307cdf0e10cSrcweir #if defined CAIRO_HAS_WIN32_SURFACE 308cdf0e10cSrcweir // FIXME: Some kind of work-araound... 309cdf0e10cSrcweir cairo_rectangle (mpSurface->getCairo().get(), 0, 0, 0, 0); 310cdf0e10cSrcweir cairo_fill(mpSurface->getCairo().get()); 311cdf0e10cSrcweir #endif 312cdf0e10cSrcweir ::Point aOutpos; 313cdf0e10cSrcweir if( !setupTextOutput( *mpVirtualDevice, pOwner, aOutpos, viewState, renderState, xFont ) ) 314cdf0e10cSrcweir return uno::Reference< rendering::XCachedPrimitive >(NULL); // no output necessary 315cdf0e10cSrcweir 316cdf0e10cSrcweir // change text direction and layout mode 317cdf0e10cSrcweir sal_uLong nLayoutMode(0); 318cdf0e10cSrcweir switch( textDirection ) 319cdf0e10cSrcweir { 320cdf0e10cSrcweir case rendering::TextDirection::WEAK_LEFT_TO_RIGHT: 321cdf0e10cSrcweir nLayoutMode |= TEXT_LAYOUT_BIDI_LTR; 322cdf0e10cSrcweir // FALLTHROUGH intended 323cdf0e10cSrcweir case rendering::TextDirection::STRONG_LEFT_TO_RIGHT: 324cdf0e10cSrcweir nLayoutMode |= TEXT_LAYOUT_BIDI_LTR | TEXT_LAYOUT_BIDI_STRONG; 325cdf0e10cSrcweir nLayoutMode |= TEXT_LAYOUT_TEXTORIGIN_LEFT; 326cdf0e10cSrcweir break; 327cdf0e10cSrcweir 328cdf0e10cSrcweir case rendering::TextDirection::WEAK_RIGHT_TO_LEFT: 329cdf0e10cSrcweir nLayoutMode |= TEXT_LAYOUT_BIDI_RTL; 330cdf0e10cSrcweir // FALLTHROUGH intended 331cdf0e10cSrcweir case rendering::TextDirection::STRONG_RIGHT_TO_LEFT: 332cdf0e10cSrcweir nLayoutMode |= TEXT_LAYOUT_BIDI_RTL | TEXT_LAYOUT_BIDI_STRONG; 333cdf0e10cSrcweir nLayoutMode |= TEXT_LAYOUT_TEXTORIGIN_RIGHT; 334cdf0e10cSrcweir break; 335cdf0e10cSrcweir } 336cdf0e10cSrcweir 337cdf0e10cSrcweir // TODO(F2): alpha 338cdf0e10cSrcweir mpVirtualDevice->SetLayoutMode( nLayoutMode ); 339cdf0e10cSrcweir 340cdf0e10cSrcweir OSL_TRACE(":cairocanvas::CanvasHelper::drawText(O,t,f,v,r,d): %s", ::rtl::OUStringToOString( text.Text.copy( text.StartPosition, text.Length ), 341cdf0e10cSrcweir RTL_TEXTENCODING_UTF8 ).getStr()); 342cdf0e10cSrcweir 343cdf0e10cSrcweir TextLayout* pTextLayout = new TextLayout(text, textDirection, 0, CanvasFont::Reference(dynamic_cast< CanvasFont* >( xFont.get() )), mpSurfaceProvider); 344cdf0e10cSrcweir pTextLayout->draw( mpSurface, *mpVirtualDevice, aOutpos, viewState, renderState ); 345cdf0e10cSrcweir } 346cdf0e10cSrcweir 347cdf0e10cSrcweir return uno::Reference< rendering::XCachedPrimitive >(NULL); 348cdf0e10cSrcweir } 349cdf0e10cSrcweir drawTextLayout(const rendering::XCanvas * pOwner,const uno::Reference<rendering::XTextLayout> & xLayoutedText,const rendering::ViewState & viewState,const rendering::RenderState & renderState)350cdf0e10cSrcweir uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawTextLayout( const rendering::XCanvas* pOwner, 351cdf0e10cSrcweir const uno::Reference< rendering::XTextLayout >& xLayoutedText, 352cdf0e10cSrcweir const rendering::ViewState& viewState, 353cdf0e10cSrcweir const rendering::RenderState& renderState ) 354cdf0e10cSrcweir { 355cdf0e10cSrcweir ENSURE_ARG_OR_THROW( xLayoutedText.is(), 356cdf0e10cSrcweir "CanvasHelper::drawTextLayout(): layout is NULL"); 357cdf0e10cSrcweir 358cdf0e10cSrcweir TextLayout* pTextLayout = dynamic_cast< TextLayout* >( xLayoutedText.get() ); 359cdf0e10cSrcweir 360cdf0e10cSrcweir if( pTextLayout ) 361cdf0e10cSrcweir { 362cdf0e10cSrcweir if( !mpVirtualDevice ) 363cdf0e10cSrcweir mpVirtualDevice = mpSurface->createVirtualDevice(); 364cdf0e10cSrcweir 365cdf0e10cSrcweir if( mpVirtualDevice ) 366cdf0e10cSrcweir { 367cdf0e10cSrcweir #if defined CAIRO_HAS_WIN32_SURFACE 368cdf0e10cSrcweir // FIXME: Some kind of work-araound... 369cdf0e10cSrcweir cairo_rectangle( mpSurface->getCairo().get(), 0, 0, 0, 0); 370cdf0e10cSrcweir cairo_fill(mpSurface->getCairo().get()); 371cdf0e10cSrcweir #endif 372cdf0e10cSrcweir // TODO(T3): Race condition. We're taking the font 373cdf0e10cSrcweir // from xLayoutedText, and then calling draw() at it, 374cdf0e10cSrcweir // without exclusive access. Move setupTextOutput(), 375cdf0e10cSrcweir // e.g. to impltools? 376cdf0e10cSrcweir 377cdf0e10cSrcweir ::Point aOutpos; 378cdf0e10cSrcweir if( !setupTextOutput( *mpVirtualDevice, pOwner, aOutpos, viewState, renderState, xLayoutedText->getFont() ) ) 379cdf0e10cSrcweir return uno::Reference< rendering::XCachedPrimitive >(NULL); // no output necessary 380cdf0e10cSrcweir 381cdf0e10cSrcweir // TODO(F2): What about the offset scalings? 382cdf0e10cSrcweir pTextLayout->draw( mpSurface, *mpVirtualDevice, aOutpos, viewState, renderState ); 383cdf0e10cSrcweir } 384cdf0e10cSrcweir } 385cdf0e10cSrcweir else 386cdf0e10cSrcweir { 387cdf0e10cSrcweir ENSURE_ARG_OR_THROW( false, 388cdf0e10cSrcweir "CanvasHelper::drawTextLayout(): TextLayout not compatible with this canvas" ); 389cdf0e10cSrcweir } 390cdf0e10cSrcweir 391cdf0e10cSrcweir return uno::Reference< rendering::XCachedPrimitive >(NULL); 392cdf0e10cSrcweir } 393cdf0e10cSrcweir 394cdf0e10cSrcweir } 395