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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 * * for a copy of the LGPLv3 License. * ************************************************************************/ // MARKER(update_precomp.py): autogen include statement, do not remove #include "precompiled_canvas.hxx" #include "surface.hxx" #include #include #include #include namespace canvas { ////////////////////////////////////////////////////////////////////////////////// // Surface::Surface ////////////////////////////////////////////////////////////////////////////////// Surface::Surface( const PageManagerSharedPtr& rPageManager, const IColorBufferSharedPtr& rColorBuffer, const ::basegfx::B2IPoint& rPos, const ::basegfx::B2ISize& rSize ) : mpColorBuffer(rColorBuffer), mpPageManager(rPageManager), mpFragment(), maSourceOffset(rPos), maSize(rSize), mbIsDirty(true) { } ////////////////////////////////////////////////////////////////////////////////// // Surface::~Surface ////////////////////////////////////////////////////////////////////////////////// Surface::~Surface() { if(mpFragment) mpPageManager->free(mpFragment); } ////////////////////////////////////////////////////////////////////////////////// // Surface::getUVCoords ////////////////////////////////////////////////////////////////////////////////// void Surface::setColorBufferDirty() { mbIsDirty=true; } ////////////////////////////////////////////////////////////////////////////////// // Surface::getUVCoords ////////////////////////////////////////////////////////////////////////////////// basegfx::B2DRectangle Surface::getUVCoords() const { ::basegfx::B2ISize aPageSize(mpPageManager->getPageSize()); ::basegfx::B2IPoint aDestOffset; if( mpFragment ) aDestOffset = mpFragment->getPos(); const double pw( aPageSize.getX() ); const double ph( aPageSize.getY() ); const double ox( aDestOffset.getX() ); const double oy( aDestOffset.getY() ); const double sx( maSize.getX() ); const double sy( maSize.getY() ); return ::basegfx::B2DRectangle( ox/pw, oy/ph, (ox+sx)/pw, (oy+sy)/ph ); } ////////////////////////////////////////////////////////////////////////////////// // Surface::getUVCoords ////////////////////////////////////////////////////////////////////////////////// basegfx::B2DRectangle Surface::getUVCoords( const ::basegfx::B2IPoint& rPos, const ::basegfx::B2ISize& rSize ) const { ::basegfx::B2ISize aPageSize(mpPageManager->getPageSize()); const double pw( aPageSize.getX() ); const double ph( aPageSize.getY() ); const double ox( rPos.getX() ); const double oy( rPos.getY() ); const double sx( rSize.getX() ); const double sy( rSize.getY() ); return ::basegfx::B2DRectangle( ox/pw, oy/ph, (ox+sx)/pw, (oy+sy)/ph ); } ////////////////////////////////////////////////////////////////////////////////// // Surface::draw ////////////////////////////////////////////////////////////////////////////////// bool Surface::draw( double fAlpha, const ::basegfx::B2DPoint& rPos, const ::basegfx::B2DHomMatrix& rTransform ) { IRenderModuleSharedPtr pRenderModule(mpPageManager->getRenderModule()); RenderModuleGuard aGuard( pRenderModule ); prepareRendering(); // convert size to normalized device coordinates const ::basegfx::B2DRectangle& rUV( getUVCoords() ); const double u1(rUV.getMinX()); const double v1(rUV.getMinY()); const double u2(rUV.getMaxX()); const double v2(rUV.getMaxY()); // concat transforms // 1) offset of surface subarea // 2) surface transform // 3) translation to output position [rPos] // 4) scale to normalized device coordinates // 5) flip y-axis // 6) translate to account for viewport transform basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix( maSourceOffset.getX(), maSourceOffset.getY())); aTransform = aTransform * rTransform; aTransform.translate(::basegfx::fround(rPos.getX()), ::basegfx::fround(rPos.getY())); /* ###################################### ###################################### ###################################### Y ^+1 | 2 | 3 x------------x | | | | | | ------|-----O------|------>X -1 | | | +1 | | | x------------x 1 | 0 | |-1 ###################################### ###################################### ###################################### */ const ::basegfx::B2DPoint& p0(aTransform * ::basegfx::B2DPoint(maSize.getX(),maSize.getY())); const ::basegfx::B2DPoint& p1(aTransform * ::basegfx::B2DPoint(0.0,maSize.getY())); const ::basegfx::B2DPoint& p2(aTransform * ::basegfx::B2DPoint(0.0,0.0)); const ::basegfx::B2DPoint& p3(aTransform * ::basegfx::B2DPoint(maSize.getX(),0.0)); canvas::Vertex vertex; vertex.r = 1.0f; vertex.g = 1.0f; vertex.b = 1.0f; vertex.a = static_cast(fAlpha); vertex.z = 0.0f; { pRenderModule->beginPrimitive( canvas::IRenderModule::PRIMITIVE_TYPE_QUAD ); // issue an endPrimitive() when leaving the scope const ::comphelper::ScopeGuard aScopeGuard( boost::bind( &::canvas::IRenderModule::endPrimitive, ::boost::ref(pRenderModule) ) ); vertex.u=static_cast(u2); vertex.v=static_cast(v2); vertex.x=static_cast(p0.getX()); vertex.y=static_cast(p0.getY()); pRenderModule->pushVertex(vertex); vertex.u=static_cast(u1); vertex.v=static_cast(v2); vertex.x=static_cast(p1.getX()); vertex.y=static_cast(p1.getY()); pRenderModule->pushVertex(vertex); vertex.u=static_cast(u1); vertex.v=static_cast(v1); vertex.x=static_cast(p2.getX()); vertex.y=static_cast(p2.getY()); pRenderModule->pushVertex(vertex); vertex.u=static_cast(u2); vertex.v=static_cast(v1); vertex.x=static_cast(p3.getX()); vertex.y=static_cast(p3.getY()); pRenderModule->pushVertex(vertex); } return !(pRenderModule->isError()); } ////////////////////////////////////////////////////////////////////////////////// // Surface::drawRectangularArea ////////////////////////////////////////////////////////////////////////////////// bool Surface::drawRectangularArea( double fAlpha, const ::basegfx::B2DPoint& rPos, const ::basegfx::B2DRectangle& rArea, const ::basegfx::B2DHomMatrix& rTransform ) { if( rArea.isEmpty() ) return true; // immediate exit for empty area IRenderModuleSharedPtr pRenderModule(mpPageManager->getRenderModule()); RenderModuleGuard aGuard( pRenderModule ); prepareRendering(); // these positions are relative to the texture ::basegfx::B2IPoint aPos1( ::basegfx::fround(rArea.getMinimum().getX()), ::basegfx::fround(rArea.getMinimum().getY())); ::basegfx::B2IPoint aPos2( ::basegfx::fround(rArea.getMaximum().getX()), ::basegfx::fround(rArea.getMaximum().getY()) ); // clip the positions to the area this surface covers aPos1.setX(::std::max(aPos1.getX(),maSourceOffset.getX())); aPos1.setY(::std::max(aPos1.getY(),maSourceOffset.getY())); aPos2.setX(::std::min(aPos2.getX(),maSourceOffset.getX()+maSize.getX())); aPos2.setY(::std::min(aPos2.getY(),maSourceOffset.getY()+maSize.getY())); // if the resulting area is empty, return immediately ::basegfx::B2IVector aSize(aPos2 - aPos1); if(aSize.getX() <= 0 || aSize.getY() <= 0) return true; ::basegfx::B2IPoint aDestOffset; if( mpFragment ) aDestOffset = mpFragment->getPos(); // convert size to normalized device coordinates const ::basegfx::B2DRectangle& rUV( getUVCoords(aPos1 - maSourceOffset + aDestOffset, aSize) ); const double u1(rUV.getMinX()); const double v1(rUV.getMinY()); const double u2(rUV.getMaxX()); const double v2(rUV.getMaxY()); // concatenate transforms // 1) offset of surface subarea // 2) surface transform // 3) translation to output position [rPos] basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix(aPos1.getX(), aPos1.getY())); aTransform = aTransform * rTransform; aTransform.translate(::basegfx::fround(rPos.getX()), ::basegfx::fround(rPos.getY())); /* ###################################### ###################################### ###################################### Y ^+1 | 2 | 3 x------------x | | | | | | ------|-----O------|------>X -1 | | | +1 | | | x------------x 1 | 0 | |-1 ###################################### ###################################### ###################################### */ const ::basegfx::B2DPoint& p0(aTransform * ::basegfx::B2DPoint(aSize.getX(),aSize.getY())); const ::basegfx::B2DPoint& p1(aTransform * ::basegfx::B2DPoint(0.0, aSize.getY())); const ::basegfx::B2DPoint& p2(aTransform * ::basegfx::B2DPoint(0.0, 0.0)); const ::basegfx::B2DPoint& p3(aTransform * ::basegfx::B2DPoint(aSize.getX(),0.0)); canvas::Vertex vertex; vertex.r = 1.0f; vertex.g = 1.0f; vertex.b = 1.0f; vertex.a = static_cast(fAlpha); vertex.z = 0.0f; { pRenderModule->beginPrimitive( canvas::IRenderModule::PRIMITIVE_TYPE_QUAD ); // issue an endPrimitive() when leaving the scope const ::comphelper::ScopeGuard aScopeGuard( boost::bind( &::canvas::IRenderModule::endPrimitive, ::boost::ref(pRenderModule) ) ); vertex.u=static_cast(u2); vertex.v=static_cast(v2); vertex.x=static_cast(p0.getX()); vertex.y=static_cast(p0.getY()); pRenderModule->pushVertex(vertex); vertex.u=static_cast(u1); vertex.v=static_cast(v2); vertex.x=static_cast(p1.getX()); vertex.y=static_cast(p1.getY()); pRenderModule->pushVertex(vertex); vertex.u=static_cast(u1); vertex.v=static_cast(v1); vertex.x=static_cast(p2.getX()); vertex.y=static_cast(p2.getY()); pRenderModule->pushVertex(vertex); vertex.u=static_cast(u2); vertex.v=static_cast(v1); vertex.x=static_cast(p3.getX()); vertex.y=static_cast(p3.getY()); pRenderModule->pushVertex(vertex); } return !(pRenderModule->isError()); } ////////////////////////////////////////////////////////////////////////////////// // Surface::drawWithClip ////////////////////////////////////////////////////////////////////////////////// bool Surface::drawWithClip( double fAlpha, const ::basegfx::B2DPoint& rPos, const ::basegfx::B2DPolygon& rClipPoly, const ::basegfx::B2DHomMatrix& rTransform ) { IRenderModuleSharedPtr pRenderModule(mpPageManager->getRenderModule()); RenderModuleGuard aGuard( pRenderModule ); prepareRendering(); // untransformed surface rectangle, relative to the whole // image (note: this surface might actually only be a tile of // the whole image, with non-zero maSourceOffset) const double x1(maSourceOffset.getX()); const double y1(maSourceOffset.getY()); const double w(maSize.getX()); const double h(maSize.getY()); const double x2(x1+w); const double y2(y1+h); const ::basegfx::B2DRectangle aSurfaceClipRect(x1,y1,x2,y2); // concatenate transforms // we use 'fround' here to avoid rounding errors. the vertices will // be transformed by the overall transform and uv coordinates will // be calculated from the result, and this is why we need to use // integer coordinates here... basegfx::B2DHomMatrix aTransform; aTransform = aTransform * rTransform; aTransform.translate(::basegfx::fround(rPos.getX()), ::basegfx::fround(rPos.getY())); /* ###################################### ###################################### ###################################### Y ^+1 | 2 | 3 x------------x | | | | | | ------|-----O------|------>X -1 | | | +1 | | | x------------x 1 | 0 | |-1 ###################################### ###################################### ###################################### */ // uv coordinates that map the surface rectangle // to the destination rectangle. const ::basegfx::B2DRectangle& rUV( getUVCoords() ); basegfx::B2DPolygon rTriangleList(basegfx::tools::clipTriangleListOnRange(rClipPoly, aSurfaceClipRect)); // Push vertices to backend renderer if(const sal_uInt32 nVertexCount = rTriangleList.count()) { canvas::Vertex vertex; vertex.r = 1.0f; vertex.g = 1.0f; vertex.b = 1.0f; vertex.a = static_cast(fAlpha); vertex.z = 0.0f; #if defined(TRIANGLE_LOG) && defined(DBG_UTIL) OSL_TRACE( "Surface::draw(): numvertices %d numtriangles %d\n", nVertexCount, nVertexCount/3 ); #endif pRenderModule->beginPrimitive( canvas::IRenderModule::PRIMITIVE_TYPE_TRIANGLE ); // issue an endPrimitive() when leaving the scope const ::comphelper::ScopeGuard aScopeGuard( boost::bind( &::canvas::IRenderModule::endPrimitive, ::boost::ref(pRenderModule) ) ); for(sal_uInt32 nIndex=0; nIndex(tu); vertex.v=static_cast(tv); vertex.x=static_cast(aTransformedPoint.getX()); vertex.y=static_cast(aTransformedPoint.getY()); pRenderModule->pushVertex(vertex); } } return !(pRenderModule->isError()); } ////////////////////////////////////////////////////////////////////////////////// // Surface::prepareRendering ////////////////////////////////////////////////////////////////////////////////// void Surface::prepareRendering() { mpPageManager->validatePages(); // clients requested to draw from this surface, therefore one // of the above implemented concrete rendering operations // was triggered. we therefore need to ask the pagemanager // to allocate some space for the fragment we're dedicated to. if(!(mpFragment)) { mpFragment = mpPageManager->allocateSpace(maSize); if( mpFragment ) { mpFragment->setColorBuffer(mpColorBuffer); mpFragment->setSourceOffset(maSourceOffset); } } if( mpFragment ) { // now we need to 'select' the fragment, which will in turn // pull informations from the image on demand. // in case this fragment is still not located on any of the // available pages ['naked'], we force the page manager to // do it now, no way to defer this any longer... if(!(mpFragment->select(mbIsDirty))) mpPageManager->nakedFragment(mpFragment); } mbIsDirty=false; } ////////////////////////////////////////////////////////////////////////////////// // End of file ////////////////////////////////////////////////////////////////////////////////// } /* vim:set shiftwidth=4 softtabstop=4 expandtab: */