canvas/source/cairo/cairo_spritecanvas.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 #include <sal/log.hxx>
  22
  23 #include <basegfx/range/b2irange.hxx>
  24 #include <basegfx/utils/canvastools.hxx>
  25 #include <com/sun/star/awt/XTopWindow.hpp>
  26 #include <com/sun/star/awt/Rectangle.hpp>
  27 #include <com/sun/star/lang/NoSupportException.hpp>
  28 #include <osl/mutex.hxx>
  29 #include <toolkit/helper/vclunohelper.hxx>
  30 #include <comphelper/diagnose_ex.hxx>
  31 #include <cppuhelper/supportsservice.hxx>
  32
  33 #include "cairo_spritecanvas.hxx"
  34
  35 using namespace ::cairo;
  36 using namespace ::com::sun::star;
  37
  38 namespace cairocanvas
  39 {
  40     SpriteCanvas::SpriteCanvas( const uno::Sequence< uno::Any >&                aArguments,
  41                                 const uno::Reference< uno::XComponentContext >& /*rxContext*/ ) :
  42         maArguments(aArguments)
  43     {
  44     }
  45
  46     void SpriteCanvas::initialize()
  47     {
  48         SAL_INFO("canvas.cairo", "CairoSpriteCanvas created " << this);
  49
  50         // #i64742# Only call initialize when not in probe mode
  51         if( !maArguments.hasElements() )
  52             return;
  53
  54         /* maArguments:
  55            0: ptr to creating instance (Window or VirtualDevice)
  56            1: current bounds of creating instance
  57            2: bool, denoting always on top state for Window (always false for VirtualDevice)
  58            3: XWindow for creating Window (or empty for VirtualDevice)
  59            4: SystemGraphicsData as a streamed Any
  60          */
  61         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 4 &&
  62                              maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER &&
  63                              maArguments[3].getValueTypeClass() == uno::TypeClass_INTERFACE,
  64                              "CairoSpriteCanvas::initialize: wrong number of arguments, or wrong types" );
  65
  66         awt::Rectangle aRect;
  67         maArguments[1] >>= aRect;
  68
  69         bool bIsFullscreen( false );
  70         maArguments[2] >>= bIsFullscreen;
  71
  72         uno::Reference< awt::XWindow > xParentWindow;
  73         maArguments[3] >>= xParentWindow;
  74
  75         VclPtr<vcl::Window> pParentWindow = VCLUnoHelper::GetWindow(xParentWindow);
  76         if( !pParentWindow )
  77             throw lang::NoSupportException(
  78                 u"Parent window not VCL window, or canvas out-of-process!"_ustr, nullptr);
  79
  80         bool bHasCairo = pParentWindow->GetOutDev()->SupportsCairo();
  81         ENSURE_ARG_OR_THROW(bHasCairo,
  82                             "CairoSpriteCanvas::SpriteCanvas: No Cairo capability");
  83
  84         Size aPixelSize( pParentWindow->GetOutputSizePixel() );
  85         const ::basegfx::B2ISize aSize( aPixelSize.Width(),
  86                                         aPixelSize.Height() );
  87
  88         // setup helper
  89         maDeviceHelper.init( *pParentWindow,
  90                              *this,
  91                              aSize,
  92                              bIsFullscreen );
  93
  94         setWindow(uno::Reference<awt::XWindow2>(xParentWindow, uno::UNO_QUERY_THROW));
  95
  96         maCanvasHelper.init( maRedrawManager,
  97                              *this,
  98                              aSize );
  99
 100         maArguments.realloc(0);
 101     }
 102
 103     void SpriteCanvas::disposeThis()
 104     {
 105         ::osl::MutexGuard aGuard( m_aMutex );
 106
 107         // forward to parent
 108         SpriteCanvasBaseT::disposeThis();
 109     }
 110
 111     sal_Bool SAL_CALL SpriteCanvas::showBuffer( sal_Bool bUpdateAll )
 112     {
 113         return updateScreen( bUpdateAll );
 114     }
 115
 116     sal_Bool SAL_CALL SpriteCanvas::switchBuffer( sal_Bool bUpdateAll )
 117     {
 118         return updateScreen( bUpdateAll );
 119     }
 120
 121     sal_Bool SAL_CALL SpriteCanvas::updateScreen( sal_Bool bUpdateAll )
 122     {
 123         ::osl::MutexGuard aGuard( m_aMutex );
 124
 125         // avoid repaints on hidden window (hidden: not mapped to
 126         // screen). Return failure, since the screen really has _not_
 127         // been updated (caller should try again later)
 128         return mbIsVisible && maCanvasHelper.updateScreen(
 129             ::basegfx::unotools::b2IRectangleFromAwtRectangle(maBounds),
 130             bUpdateAll,
 131             mbSurfaceDirty);
 132     }
 133
 134     OUString SAL_CALL SpriteCanvas::getServiceName(  )
 135     {
 136         return u"com.sun.star.rendering.SpriteCanvas.Cairo"_ustr;
 137     }
 138
 139     //  XServiceInfo
 140     sal_Bool SpriteCanvas::supportsService(const OUString& sServiceName)
 141     {
 142         return cppu::supportsService(this, sServiceName);
 143
 144     }
 145     OUString SpriteCanvas::getImplementationName()
 146     {
 147         return u"com.sun.star.comp.rendering.SpriteCanvas.Cairo"_ustr;
 148     }
 149     css::uno::Sequence< OUString > SpriteCanvas::getSupportedServiceNames()
 150     {
 151         return { getServiceName() };
 152     }
 153
 154     SurfaceSharedPtr SpriteCanvas::getSurface()
 155     {
 156         return maDeviceHelper.getBufferSurface();
 157     }
 158
 159     SurfaceSharedPtr SpriteCanvas::createSurface( const ::basegfx::B2ISize& rSize, int aContent )
 160     {
 161         return maDeviceHelper.createSurface( rSize, aContent );
 162     }
 163
 164     SurfaceSharedPtr SpriteCanvas::createSurface( ::Bitmap& rBitmap )
 165     {
 166         BitmapSystemData aData;
 167         if( rBitmap.GetSystemData( aData ) ) {
 168             const Size aSize = rBitmap.GetSizePixel();
 169
 170             return maDeviceHelper.createSurface( aData, aSize );
 171         }
 172
 173         return SurfaceSharedPtr();
 174     }
 175
 176     SurfaceSharedPtr SpriteCanvas::changeSurface()
 177     {
 178         // non-modifiable surface here
 179         return SurfaceSharedPtr();
 180     }
 181
 182     OutputDevice* SpriteCanvas::getOutputDevice()
 183     {
 184         return maDeviceHelper.getOutputDevice();
 185     }
 186
 187     SurfaceSharedPtr const & SpriteCanvas::getBufferSurface() const
 188     {
 189         return maDeviceHelper.getBufferSurface();
 190     }
 191
 192     SurfaceSharedPtr const & SpriteCanvas::getWindowSurface() const
 193     {
 194         return maDeviceHelper.getWindowSurface();
 195     }
 196
 197     const ::basegfx::B2ISize& SpriteCanvas::getSizePixel() const
 198     {
 199         return maDeviceHelper.getSizePixel();
 200     }
 201
 202     void SpriteCanvas::setSizePixel( const ::basegfx::B2ISize& rSize )
 203     {
 204         maCanvasHelper.setSize( rSize );
 205         // re-set background surface, in case it needed recreation
 206         maCanvasHelper.setSurface( maDeviceHelper.getBufferSurface(),
 207                                    false );
 208     }
 209
 210     void SpriteCanvas::flush()
 211     {
 212         maDeviceHelper.flush();
 213     }
 214
 215     bool SpriteCanvas::repaint( const SurfaceSharedPtr&       pSurface,
 216                                 const rendering::ViewState&   viewState,
 217                                 const rendering::RenderState& renderState )
 218     {
 219         return maCanvasHelper.repaint( pSurface, viewState, renderState );
 220     }
 221 }
 222
 223 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
 224 com_sun_star_comp_rendering_SpriteCanvas_Cairo_get_implementation(
 225     css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& args)
 226 {
 227     rtl::Reference<cairocanvas::SpriteCanvas> p = new cairocanvas::SpriteCanvas(args, context);
 228     p->initialize();
 229     return cppu::acquire(p.get());
 230 }
 231
 232 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */