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 #include <sal/config.h>
  21
  22 #include "canvas.hxx"
  23
  24 #include <com/sun/star/lang/NoSupportException.hpp>
  25 #include <sal/log.hxx>
  26 #include <comphelper/diagnose_ex.hxx>
  27 #include <cppuhelper/supportsservice.hxx>
  28 #include <vcl/outdev.hxx>
  29
  30 #include "outdevholder.hxx"
  31
  32 using namespace ::com::sun::star;
  33
  34 namespace vclcanvas
  35 {
  36     Canvas::Canvas( const uno::Sequence< uno::Any >&                aArguments,
  37                     const uno::Reference< uno::XComponentContext >& /*rxContext*/ ) :
  38         maArguments(aArguments)
  39     {
  40     }
  41
  42     void Canvas::initialize()
  43     {
  44         // #i64742# Only perform initialization when not in probe mode
  45         if( !maArguments.hasElements() )
  46             return;
  47
  48         /* maArguments:
  49            0: ptr to creating instance (Window or VirtualDevice)
  50            1: current bounds of creating instance
  51            2: bool, denoting always on top state for Window (always false for VirtualDevice)
  52            3: XWindow for creating Window (or empty for VirtualDevice)
  53            4: SystemGraphicsData as a streamed Any
  54          */
  55         SolarMutexGuard aGuard;
  56
  57         SAL_INFO("canvas.vcl", "VCLCanvas::initialize called" );
  58
  59         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 5 &&
  60                              maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER,
  61                              "Canvas::initialize: wrong number of arguments, or wrong types" );
  62
  63         sal_Int64 nPtr = 0;
  64         maArguments[0] >>= nPtr;
  65
  66         OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);
  67         if( !pOutDev )
  68             throw lang::NoSupportException(u"Passed OutDev invalid!"_ustr, nullptr);
  69
  70         OutDevProviderSharedPtr pOutdevProvider = std::make_shared<OutDevHolder>(*pOutDev);
  71
  72         // setup helper
  73         maDeviceHelper.init( pOutdevProvider );
  74         maCanvasHelper.init( *this,
  75                              pOutdevProvider,
  76                              true,   // OutDev state preservation
  77                              false ); // no alpha on surface
  78
  79         maArguments.realloc(0);
  80     }
  81
  82     Canvas::~Canvas()
  83     {
  84         SAL_INFO("canvas.vcl", "VCLCanvas destroyed" );
  85     }
  86
  87     void Canvas::disposeThis()
  88     {
  89         SolarMutexGuard aGuard;
  90
  91         // forward to parent
  92         CanvasBaseT::disposeThis();
  93     }
  94
  95     OUString SAL_CALL Canvas::getServiceName(  )
  96     {
  97         return u"com.sun.star.rendering.Canvas.VCL"_ustr;
  98     }
  99
 100     OUString Canvas::getImplementationName() {
 101         return u"com.sun.star.comp.rendering.Canvas.VCL"_ustr;
 102     }
 103
 104     sal_Bool Canvas::supportsService(OUString const & ServiceName) {
 105         return cppu::supportsService(this, ServiceName);
 106     }
 107
 108     css::uno::Sequence<OUString> Canvas::getSupportedServiceNames() {
 109         return {getServiceName()};
 110     }
 111
 112     bool Canvas::repaint( const GraphicObjectSharedPtr& rGrf,
 113                           const rendering::ViewState&   viewState,
 114                           const rendering::RenderState& renderState,
 115                           const ::Point&                rPt,
 116                           const ::Size&                 rSz,
 117                           const GraphicAttr&            rAttr ) const
 118     {
 119         SolarMutexGuard aGuard;
 120
 121         return maCanvasHelper.repaint( rGrf, viewState, renderState, rPt, rSz, rAttr );
 122     }
 123 }
 124
 125 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
 126 com_sun_star_comp_rendering_Canvas_VCL_get_implementation(
 127     css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& args)
 128 {
 129     rtl::Reference<vclcanvas::Canvas> p = new vclcanvas::Canvas(args, context);
 130     p->initialize();
 131     return cppu::acquire(p.get());
 132 }
 133
 134 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */