canvas/source/directx/dx_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 <memory>
  23 #include <utility>
  24
  25 #include <sal/log.hxx>
  26
  27 #include <basegfx/matrix/b2dhommatrix.hxx>
  28 #include <basegfx/numeric/ftools.hxx>
  29 #include <basegfx/point/b2dpoint.hxx>
  30 #include <basegfx/utils/canvastools.hxx>
  31 #include <com/sun/star/awt/XSystemDependentWindowPeer.hpp>
  32 #include <com/sun/star/awt/XWindow.hpp>
  33 #include <com/sun/star/lang/NoSupportException.hpp>
  34 #include <com/sun/star/lang/XSingleServiceFactory.hpp>
  35 #include <com/sun/star/registry/XRegistryKey.hpp>
  36 #include <com/sun/star/uno/XComponentContext.hpp>
  37 #include <cppuhelper/supportsservice.hxx>
  38 #include <osl/mutex.hxx>
  39 #include <comphelper/diagnose_ex.hxx>
  40 #include <vcl/sysdata.hxx>
  41 #include <vcl/skia/SkiaHelper.hxx>
  42 #include <vcl/window.hxx>
  43
  44 #include <canvas/canvastools.hxx>
  45
  46 #include "dx_canvas.hxx"
  47 #include "dx_graphicsprovider.hxx"
  48 #include "dx_winstuff.hxx"
  49
  50 using namespace ::com::sun::star;
  51
  52 namespace dxcanvas
  53 {
  54     namespace {
  55
  56     /// Actual canonical implementation of the GraphicsProvider interface
  57     class GraphicsProviderImpl : public GraphicsProvider
  58     {
  59         GraphicsSharedPtr mpGraphics;
  60     public:
  61         explicit GraphicsProviderImpl( GraphicsSharedPtr && pGraphics ) : mpGraphics( std::move(pGraphics) ) {}
  62         virtual GraphicsSharedPtr getGraphics() override { return mpGraphics; }
  63     };
  64
  65     }
  66
  67     Canvas::Canvas( const uno::Sequence< uno::Any >&                aArguments,
  68                     const uno::Reference< uno::XComponentContext >& rxContext ) :
  69         maArguments(aArguments),
  70         mxComponentContext( rxContext )
  71     {
  72     }
  73
  74     void Canvas::initialize()
  75     {
  76         // #i64742# Only perform initialization when not in probe mode
  77         if( maArguments.getLength() == 0 )
  78             return;
  79
  80         assert( !SkiaHelper::isVCLSkiaEnabled() );
  81
  82         SAL_INFO("canvas.directx", "Canvas::initialize called" );
  83
  84         // At index 1, we expect a HWND handle here, containing a
  85         // pointer to a valid window, on which to output
  86         // At index 2, we expect the current window bound rect
  87         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 5 &&
  88                              maArguments[4].getValueTypeClass() == uno::TypeClass_SEQUENCE,
  89                              "Canvas::initialize: wrong number of arguments, or wrong types" );
  90
  91         uno::Sequence<sal_Int8> aSeq;
  92         maArguments[4] >>= aSeq;
  93
  94         const SystemGraphicsData* pSysData=reinterpret_cast<const SystemGraphicsData*>(aSeq.getConstArray());
  95         if( !pSysData || !pSysData->hDC )
  96             throw lang::NoSupportException("Passed SystemGraphicsData or HDC invalid!");
  97
  98         sal_Int64 nPtr = 0;
  99         maArguments[0] >>= nPtr;
 100         OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);
 101         ENSURE_ARG_OR_THROW( pOutDev != nullptr,"Canvas::initialize: invalid OutDev pointer" );
 102
 103         // setup helper
 104         maDeviceHelper.init( pSysData->hDC, pOutDev, *this );
 105         maCanvasHelper.setDevice( *this );
 106         maCanvasHelper.setTarget(
 107             std::make_shared<GraphicsProviderImpl>(
 108                     GraphicsSharedPtr(Gdiplus::Graphics::FromHDC(pSysData->hDC))));
 109
 110         maArguments.realloc(0);
 111     }
 112
 113     void Canvas::disposeThis()
 114     {
 115         ::osl::MutexGuard aGuard( m_aMutex );
 116
 117         mxComponentContext.clear();
 118
 119         // forward to parent
 120         CanvasBaseT::disposeThis();
 121     }
 122
 123     OUString SAL_CALL Canvas::getServiceName(  )
 124     {
 125         return "com.sun.star.rendering.Canvas.GDI+";
 126     }
 127
 128     // XServiceInfo
 129     css::uno::Sequence<OUString> Canvas::getSupportedServiceNames(  )
 130     {
 131         return { "com.sun.star.rendering.Canvas.GDI+" };
 132     }
 133     OUString Canvas::getImplementationName(  )
 134     {
 135         return "com.sun.star.comp.rendering.Canvas.GDI+";
 136     }
 137     sal_Bool Canvas::supportsService( const OUString& sServiceName )
 138     {
 139         return cppu::supportsService(this, sServiceName);
 140     }
 141
 142     BitmapCanvas::BitmapCanvas( const uno::Sequence< uno::Any >&                aArguments,
 143                                 const uno::Reference< uno::XComponentContext >& rxContext ) :
 144         maArguments(aArguments),
 145         mxComponentContext( rxContext ),
 146         mpTarget()
 147     {
 148     }
 149
 150     void BitmapCanvas::initialize()
 151     {
 152         // #i64742# Only perform initialization when not in probe mode
 153         if( maArguments.getLength() == 0 )
 154             return;
 155
 156         SAL_INFO("canvas.directx", "BitmapCanvas::initialize called" );
 157
 158         // At index 1, we expect a HWND handle here, containing a
 159         // pointer to a valid window, on which to output
 160         // At index 2, we expect the current window bound rect
 161         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 5 &&
 162                              maArguments[4].getValueTypeClass() == uno::TypeClass_SEQUENCE,
 163                              "Canvas::initialize: wrong number of arguments, or wrong types" );
 164
 165         uno::Sequence<sal_Int8> aSeq;
 166         maArguments[4] >>= aSeq;
 167
 168         const SystemGraphicsData* pSysData=reinterpret_cast<const SystemGraphicsData*>(aSeq.getConstArray());
 169         if( !pSysData || !pSysData->hDC )
 170             throw lang::NoSupportException( "Passed SystemGraphicsData or HDC invalid!");
 171
 172         sal_Int64 nPtr = 0;
 173         maArguments[0] >>= nPtr;
 174         OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);
 175         ENSURE_ARG_OR_THROW( pOutDev != nullptr,"Canvas::initialize: invalid OutDev pointer" );
 176
 177         // setup helper
 178         maDeviceHelper.init( pSysData->hDC, pOutDev, *this );
 179         maCanvasHelper.setDevice( *this );
 180
 181         // check whether we can actually provide a BitmapCanvas
 182         // here. for this, check whether the HDC has a bitmap
 183         // selected.
 184         HBITMAP hBmp;
 185         hBmp=static_cast<HBITMAP>(GetCurrentObject(pSysData->hDC, OBJ_BITMAP));
 186         if( !hBmp || GetObjectType(pSysData->hDC) != OBJ_MEMDC )
 187         {
 188             throw lang::NoSupportException( "Passed HDC is no mem DC/has no bitmap selected!");
 189         }
 190
 191         mpTarget = std::make_shared<DXBitmap>(
 192                             BitmapSharedPtr(
 193                                 Gdiplus::Bitmap::FromHBITMAP(
 194                                     hBmp, nullptr) ),
 195                             false );
 196
 197         maCanvasHelper.setTarget( mpTarget );
 198
 199         maArguments.realloc(0);
 200     }
 201
 202     void BitmapCanvas::disposeThis()
 203     {
 204         ::osl::MutexGuard aGuard( m_aMutex );
 205
 206         mpTarget.reset();
 207         mxComponentContext.clear();
 208
 209         // forward to parent
 210         BitmapCanvasBaseT::disposeThis();
 211     }
 212
 213     OUString SAL_CALL BitmapCanvas::getServiceName(  )
 214     {
 215         return "com.sun.star.rendering.BitmapCanvas.GDI+";
 216     }
 217
 218     // XServiceInfo
 219     css::uno::Sequence<OUString> BitmapCanvas::getSupportedServiceNames(  )
 220     {
 221         return { "com.sun.star.rendering.BitmapCanvas.GDI+" };
 222     }
 223     OUString BitmapCanvas::getImplementationName(  )
 224     {
 225         return "com.sun.star.comp.rendering.BitmapCanvas.GDI+";
 226     }
 227     sal_Bool BitmapCanvas::supportsService( const OUString& sServiceName )
 228     {
 229         return cppu::supportsService(this, sServiceName);
 230     }
 231
 232     IBitmapSharedPtr BitmapCanvas::getBitmap() const
 233     {
 234         return mpTarget;
 235     }
 236
 237     extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
 238     canvas_gdiplus_Canvas_get_implementation(
 239         css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& args)
 240     {
 241         rtl::Reference<Canvas> xCanvas(new Canvas(args, context));
 242         xCanvas->initialize();
 243         return cppu::acquire(xCanvas.get());
 244     }
 245
 246     extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
 247     canvas_gdiplus_BitmapCanvas_get_implementation(
 248         css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& args)
 249     {
 250         rtl::Reference<BitmapCanvas> xCanvas(new BitmapCanvas(args, context));
 251         xCanvas->initialize();
 252         return cppu::acquire(xCanvas.get());
 253     }
 254 }
 255
 256 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */