canvas/source/vcl/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
  21 #include <canvas/debug.hxx>
  22 #include <canvas/verbosetrace.hxx>
  23 #include <canvas/canvastools.hxx>
  24 #include <tools/diagnose_ex.h>
  25
  26 #include <com/sun/star/registry/XRegistryKey.hpp>
  27 #include <com/sun/star/lang/XSingleServiceFactory.hpp>
  28 #include <com/sun/star/lang/NoSupportException.hpp>
  29 #include <com/sun/star/uno/XComponentContext.hpp>
  30
  31 #include <vcl/canvastools.hxx>
  32 #include <vcl/outdev.hxx>
  33 #include <vcl/window.hxx>
  34 #include <vcl/bitmapex.hxx>
  35
  36 #include <basegfx/tools/canvastools.hxx>
  37
  38 #include <algorithm>
  39
  40 #include "canvas.hxx"
  41 #include "windowoutdevholder.hxx"
  42
  43 using namespace ::com::sun::star;
  44
  45 namespace vclcanvas
  46 {
  47     namespace
  48     {
  49         class OutDevHolder : public OutDevProvider,
  50             private ::boost::noncopyable
  51         {
  52         public:
  53             explicit OutDevHolder( OutputDevice& rOutDev ) :
  54                 mrOutDev(rOutDev)
  55             {}
  56
  57         private:
  58             virtual OutputDevice&       getOutDev() SAL_OVERRIDE { return mrOutDev; }
  59             virtual const OutputDevice& getOutDev() const SAL_OVERRIDE { return mrOutDev; }
  60
  61             // TODO(Q2): Lifetime issue. This _only_ works reliably,
  62             // if disposing the Canvas correctly disposes all
  63             // entities which hold this pointer.
  64             OutputDevice& mrOutDev;
  65         };
  66     }
  67
  68     Canvas::Canvas( const uno::Sequence< uno::Any >&                aArguments,
  69                     const uno::Reference< uno::XComponentContext >& rxContext ) :
  70         maArguments(aArguments),
  71         mxComponentContext( rxContext )
  72     {
  73     }
  74
  75     void Canvas::initialize()
  76     {
  77         // #i64742# Only perform initialization when not in probe mode
  78         if( maArguments.getLength() == 0 )
  79             return;
  80
  81         /* maArguments:
  82            0: ptr to creating instance (Window or VirtualDevice)
  83            1: SystemEnvData as a streamed Any (or empty for VirtualDevice)
  84            2: current bounds of creating instance
  85            3: bool, denoting always on top state for Window (always false for VirtualDevice)
  86            4: XWindow for creating Window (or empty for VirtualDevice)
  87            5: SystemGraphicsData as a streamed Any
  88          */
  89         SolarMutexGuard aGuard;
  90
  91         VERBOSE_TRACE( "VCLCanvas::initialize called" );
  92
  93         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 6 &&
  94                              maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER,
  95                              "Canvas::initialize: wrong number of arguments, or wrong types" );
  96
  97         sal_Int64 nPtr = 0;
  98         maArguments[0] >>= nPtr;
  99
 100         OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);
 101         if( !pOutDev )
 102             throw lang::NoSupportException(
 103                 OUString( "Passed OutDev invalid!" ),
 104                 NULL);
 105
 106         OutDevProviderSharedPtr pOutdevProvider( new OutDevHolder(*pOutDev) );
 107
 108         // setup helper
 109         maDeviceHelper.init( pOutdevProvider );
 110         maCanvasHelper.init( *this,
 111                              pOutdevProvider,
 112                              true,   // OutDev state preservation
 113                              false ); // no alpha on surface
 114
 115         maArguments.realloc(0);
 116     }
 117
 118     Canvas::~Canvas()
 119     {
 120         OSL_TRACE( "Canvas destroyed" );
 121     }
 122
 123     void Canvas::disposeThis()
 124     {
 125         SolarMutexGuard aGuard;
 126
 127         mxComponentContext.clear();
 128
 129         // forward to parent
 130         CanvasBaseT::disposeThis();
 131     }
 132
 133     OUString SAL_CALL Canvas::getServiceName(  ) throw (::com::sun::star::uno::RuntimeException, std::exception)
 134     {
 135         return OUString( CANVAS_SERVICE_NAME );
 136     }
 137
 138     bool Canvas::repaint( const GraphicObjectSharedPtr& rGrf,
 139                           const rendering::ViewState&   viewState,
 140                           const rendering::RenderState& renderState,
 141                           const ::Point&                rPt,
 142                           const ::Size&                 rSz,
 143                           const GraphicAttr&            rAttr ) const
 144     {
 145         SolarMutexGuard aGuard;
 146
 147         return maCanvasHelper.repaint( rGrf, viewState, renderState, rPt, rSz, rAttr );
 148     }
 149 }
 150
 151 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */