canvas/source/cairo/cairo_canvas.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <canvas/debug.hxx>
  21 #include <canvas/verbosetrace.hxx>
  22 #include <canvas/canvastools.hxx>
  23 #include <tools/diagnose_ex.h>
  24
  25 #include <osl/mutex.hxx>
  26
  27 #include <com/sun/star/registry/XRegistryKey.hpp>
  28 #include <com/sun/star/lang/XSingleServiceFactory.hpp>
  29 #include <com/sun/star/uno/XComponentContext.hpp>
  30 #include <com/sun/star/lang/NoSupportException.hpp>
  31
  32 #include <toolkit/helper/vclunohelper.hxx>
  33 #include <vcl/opengl/OpenGLWrapper.hxx>
  34
  35 #include <basegfx/matrix/b2dhommatrix.hxx>
  36 #include <basegfx/point/b2dpoint.hxx>
  37 #include <basegfx/tools/canvastools.hxx>
  38 #include <basegfx/numeric/ftools.hxx>
  39
  40 #include <vcl/sysdata.hxx>
  41
  42 #include "cairo_canvas.hxx"
  43
  44 using namespace ::cairo;
  45 using namespace ::com::sun::star;
  46
  47 namespace cairocanvas
  48 {
  49     Canvas::Canvas( const uno::Sequence< uno::Any >&                aArguments,
  50                     const uno::Reference< uno::XComponentContext >& rxContext ) :
  51         maArguments(aArguments),
  52         mxComponentContext( rxContext )
  53     {
  54     }
  55
  56     void Canvas::initialize()
  57     {
  58         // #i64742# Only perform initialization when not in probe mode
  59         if( maArguments.getLength() == 0 )
  60             return;
  61
  62         // tdf#93870 - force VCL canvas in OpenGL mode for now.
  63         assert( !OpenGLWrapper::isVCLOpenGLEnabled() );
  64
  65         /* maArguments:
  66            0: ptr to creating instance (Window or VirtualDevice)
  67            1: SystemEnvData as a streamed Any (or empty for VirtualDevice)
  68            2: current bounds of creating instance
  69            3: bool, denoting always on top state for Window (always false for VirtualDevice)
  70            4: XWindow for creating Window (or empty for VirtualDevice)
  71            5: SystemGraphicsData as a streamed Any
  72          */
  73         VERBOSE_TRACE("Canvas created %p\n", this);
  74
  75         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 6 &&
  76                              maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER &&
  77                              maArguments[5].getValueTypeClass() == uno::TypeClass_SEQUENCE,
  78                              "Canvas::initialize: wrong number of arguments, or wrong types" );
  79
  80         // We expect a single Any here, containing a pointer to a valid
  81         // VCL output device, on which to output (mostly needed for text)
  82         sal_Int64 nPtr = 0;
  83         maArguments[0] >>= nPtr;
  84         OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);
  85
  86         ENSURE_ARG_OR_THROW( pOutDev != NULL,
  87                              "Canvas::initialize: invalid OutDev pointer" );
  88
  89         awt::Rectangle aBounds;
  90         maArguments[2] >>= aBounds;
  91
  92         uno::Sequence<sal_Int8> aSeq;
  93         maArguments[5] >>= aSeq;
  94
  95         const SystemGraphicsData* pSysData=reinterpret_cast<const SystemGraphicsData*>(aSeq.getConstArray());
  96         if( !pSysData || !pSysData->nSize )
  97             throw lang::NoSupportException( "Passed SystemGraphicsData invalid!" );
  98
  99         bool bHasCairo = pOutDev->SupportsCairo();
 100         ENSURE_ARG_OR_THROW(bHasCairo, "SpriteCanvas::SpriteCanvas: No Cairo capability");
 101
 102         // setup helper
 103         maDeviceHelper.init( *this, *pOutDev );
 104
 105         maCanvasHelper.init( basegfx::B2ISize(aBounds.Width, aBounds.Height), *this, this );
 106
 107         // forward surface to render on to canvashelper
 108         maCanvasHelper.setSurface( maDeviceHelper.getSurface(), false );
 109
 110         maArguments.realloc(0);
 111     }
 112
 113     Canvas::~Canvas()
 114     {
 115         OSL_TRACE( "CairoCanvas destroyed" );
 116     }
 117
 118     void Canvas::disposeThis()
 119     {
 120         ::osl::MutexGuard aGuard( m_aMutex );
 121
 122         mxComponentContext.clear();
 123
 124         // forward to parent
 125         CanvasBaseT::disposeThis();
 126     }
 127
 128     OUString SAL_CALL Canvas::getServiceName(  ) throw (uno::RuntimeException, std::exception)
 129     {
 130         return OUString( CANVAS_SERVICE_NAME );
 131     }
 132
 133     bool Canvas::repaint( const SurfaceSharedPtr&       pSurface,
 134                           const rendering::ViewState&   viewState,
 135                           const rendering::RenderState& renderState )
 136     {
 137         return maCanvasHelper.repaint( pSurface, viewState, renderState );
 138     }
 139
 140     SurfaceSharedPtr Canvas::getSurface()
 141     {
 142         return maDeviceHelper.getSurface();
 143     }
 144
 145     SurfaceSharedPtr Canvas::createSurface( const ::basegfx::B2ISize& rSize, int aContent )
 146     {
 147         return maDeviceHelper.createSurface( rSize, aContent );
 148     }
 149
 150     SurfaceSharedPtr Canvas::createSurface( ::Bitmap& rBitmap )
 151     {
 152         SurfaceSharedPtr pSurface;
 153
 154         BitmapSystemData aData;
 155         if( rBitmap.GetSystemData( aData ) ) {
 156             const Size& rSize = rBitmap.GetSizePixel();
 157
 158             pSurface = maDeviceHelper.createSurface( aData, rSize );
 159         }
 160
 161         return pSurface;
 162     }
 163
 164     SurfaceSharedPtr Canvas::changeSurface( bool, bool )
 165     {
 166         // non-modifiable surface here
 167         return SurfaceSharedPtr();
 168     }
 169
 170     OutputDevice* Canvas::getOutputDevice()
 171     {
 172         return maDeviceHelper.getOutputDevice();
 173     }
 174 }
 175
 176 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */