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
  34 #include <basegfx/matrix/b2dhommatrix.hxx>
  35 #include <basegfx/point/b2dpoint.hxx>
  36 #include <basegfx/tools/canvastools.hxx>
  37 #include <basegfx/numeric/ftools.hxx>
  38
  39 #include <vcl/sysdata.hxx>
  40
  41 #include "cairo_canvas.hxx"
  42
  43 using namespace ::cairo;
  44 using namespace ::com::sun::star;
  45
  46 namespace cairocanvas
  47 {
  48     Canvas::Canvas( const uno::Sequence< uno::Any >&                aArguments,
  49                     const uno::Reference< uno::XComponentContext >& rxContext ) :
  50         maArguments(aArguments),
  51         mxComponentContext( rxContext )
  52     {
  53     }
  54
  55     void Canvas::initialize()
  56     {
  57         // #i64742# Only perform initialization when not in probe mode
  58         if( maArguments.getLength() == 0 )
  59             return;
  60
  61         /* maArguments:
  62            0: ptr to creating instance (Window or VirtualDevice)
  63            1: SystemEnvData as a streamed Any (or empty for VirtualDevice)
  64            2: current bounds of creating instance
  65            3: bool, denoting always on top state for Window (always false for VirtualDevice)
  66            4: XWindow for creating Window (or empty for VirtualDevice)
  67            5: SystemGraphicsData as a streamed Any
  68          */
  69         VERBOSE_TRACE("Canvas created %p\n", this);
  70
  71         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 6 &&
  72                              maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER &&
  73                              maArguments[5].getValueTypeClass() == uno::TypeClass_SEQUENCE,
  74                              "Canvas::initialize: wrong number of arguments, or wrong types" );
  75
  76         // We expect a single Any here, containing a pointer to a valid
  77         // VCL output device, on which to output (mostly needed for text)
  78         sal_Int64 nPtr = 0;
  79         maArguments[0] >>= nPtr;
  80         OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);
  81
  82         ENSURE_ARG_OR_THROW( pOutDev != NULL,
  83                              "Canvas::initialize: invalid OutDev pointer" );
  84
  85         awt::Rectangle aBounds;
  86         maArguments[2] >>= aBounds;
  87
  88         uno::Sequence<sal_Int8> aSeq;
  89         maArguments[5] >>= aSeq;
  90
  91         const SystemGraphicsData* pSysData=reinterpret_cast<const SystemGraphicsData*>(aSeq.getConstArray());
  92         if( !pSysData || !pSysData->nSize )
  93             throw lang::NoSupportException( "Passed SystemGraphicsData invalid!", NULL);
  94
  95         bool bHasXRender = IsCairoWorking(pOutDev);
  96         ENSURE_ARG_OR_THROW( bHasXRender == true, "SpriteCanvas::SpriteCanvas: No RENDER extension" );
  97
  98         // setup helper
  99         maDeviceHelper.init( *this, *pOutDev );
 100
 101         maCanvasHelper.init( basegfx::B2ISize(aBounds.Width, aBounds.Height), *this, this );
 102
 103         // forward surface to render on to canvashelper
 104         maCanvasHelper.setSurface( maDeviceHelper.getSurface(), false );
 105
 106         maArguments.realloc(0);
 107     }
 108
 109     Canvas::~Canvas()
 110     {
 111         OSL_TRACE( "CairoCanvas destroyed" );
 112     }
 113
 114     void Canvas::disposeThis()
 115     {
 116         ::osl::MutexGuard aGuard( m_aMutex );
 117
 118         mxComponentContext.clear();
 119
 120         // forward to parent
 121         CanvasBaseT::disposeThis();
 122     }
 123
 124     OUString SAL_CALL Canvas::getServiceName(  ) throw (uno::RuntimeException)
 125     {
 126         return OUString( CANVAS_SERVICE_NAME );
 127     }
 128
 129     bool Canvas::repaint( const SurfaceSharedPtr&       pSurface,
 130                           const rendering::ViewState&   viewState,
 131                           const rendering::RenderState& renderState )
 132     {
 133         return maCanvasHelper.repaint( pSurface, viewState, renderState );
 134     }
 135
 136     SurfaceSharedPtr Canvas::getSurface()
 137     {
 138         return maDeviceHelper.getSurface();
 139     }
 140
 141     SurfaceSharedPtr Canvas::createSurface( const ::basegfx::B2ISize& rSize, Content aContent )
 142     {
 143         return maDeviceHelper.createSurface( rSize, aContent );
 144     }
 145
 146     SurfaceSharedPtr Canvas::createSurface( ::Bitmap& rBitmap )
 147     {
 148         SurfaceSharedPtr pSurface;
 149
 150         BitmapSystemData aData;
 151         if( rBitmap.GetSystemData( aData ) ) {
 152             const Size& rSize = rBitmap.GetSizePixel();
 153
 154             pSurface = maDeviceHelper.createSurface( aData, rSize );
 155         }
 156
 157         return pSurface;
 158     }
 159
 160     SurfaceSharedPtr Canvas::changeSurface( bool, bool )
 161     {
 162         // non-modifiable surface here
 163         return SurfaceSharedPtr();
 164     }
 165
 166     OutputDevice* Canvas::getOutputDevice()
 167     {
 168         return maDeviceHelper.getOutputDevice();
 169     }
 170 }
 171
 172 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */