AOO410/main/canvas/source/cairo/cairo_spritedevicehelper.cxx

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"

#include <canvas/debug.hxx>
#include <canvas/verbosetrace.hxx>
#include <canvas/canvastools.hxx>

#include <osl/mutex.hxx>
#include <cppuhelper/compbase1.hxx>

#include <com/sun/star/lang/NoSupportException.hpp>

#include <toolkit/helper/vclunohelper.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <basegfx/tools/unopolypolygon.hxx>

#include <vcl/syschild.hxx>
#include <vcl/canvastools.hxx>

#include "cairo_spritecanvas.hxx"
#include "cairo_canvasbitmap.hxx"
#include "cairo_devicehelper.hxx"
#include "cairo_cairo.hxx"

using namespace ::cairo;
using namespace ::com::sun::star;

namespace cairocanvas
{

    SpriteDeviceHelper::SpriteDeviceHelper() :
        mpSpriteCanvas( NULL ),
        mpBufferSurface(),
        maSize(),
        mbFullScreen( false )
    {}

    void SpriteDeviceHelper::init( Window&                   rOutputWindow,
                                   SpriteCanvas&			 rSpriteCanvas,
                                   const ::basegfx::B2ISize& rSize,
                                   bool                      bFullscreen )
    {
        DeviceHelper::init(rSpriteCanvas,
                           rOutputWindow);

        mpSpriteCanvas = &rSpriteCanvas;
        mbFullScreen = bFullscreen;

        setSize( rSize );
    }

    void SpriteDeviceHelper::disposing()
    {
        // release all references
        mpBufferSurface.reset();
        mpSpriteCanvas = NULL;
    }

    ::sal_Int32 SpriteDeviceHelper::createBuffers( ::sal_Int32 /*nBuffers*/ )
    {
        // TODO(F3): implement XBufferStrategy interface. For now, we
        // _always_ will have exactly one backbuffer
        return 1;
    }

    void SpriteDeviceHelper::destroyBuffers()
    {
        // TODO(F3): implement XBufferStrategy interface. For now, we
        // _always_ will have exactly one backbuffer
    }

    ::sal_Bool SpriteDeviceHelper::showBuffer( bool, ::sal_Bool )
    {
        OSL_ENSURE(false,"Not supposed to be called, handled by SpriteCanvas");
        return sal_False;
    }

    ::sal_Bool SpriteDeviceHelper::switchBuffer( bool, ::sal_Bool )
    {
        OSL_ENSURE(false,"Not supposed to be called, handled by SpriteCanvas");
        return sal_False;
    }

    uno::Any SpriteDeviceHelper::isAccelerated() const
    {
        return ::com::sun::star::uno::makeAny(true);
    }  

    uno::Any SpriteDeviceHelper::getDeviceHandle() const
    {
        return DeviceHelper::getDeviceHandle();
    }

    uno::Any SpriteDeviceHelper::getSurfaceHandle() const
    {
        return DeviceHelper::getSurfaceHandle();
    }

    void SpriteDeviceHelper::setSize( const ::basegfx::B2ISize& rSize )
    {
		OSL_TRACE("SpriteDeviceHelper::setSize(): device size %d x %d", rSize.getX(), rSize.getY() );

        if( !mpSpriteCanvas )
            return; // disposed

        DeviceHelper::setSize(rSize);

		if( mpBufferSurface && maSize != rSize )
            mpBufferSurface.reset();
		if( !mpBufferSurface )
			mpBufferSurface = getWindowSurface()->getSimilar( 
                CAIRO_CONTENT_COLOR, 
                rSize.getX(), rSize.getY() );

		if( maSize != rSize )
			maSize = rSize;

		mpSpriteCanvas->setSizePixel( maSize );
    }

    const ::basegfx::B2ISize& SpriteDeviceHelper::getSizePixel()
    {
        return maSize;
    }

    void SpriteDeviceHelper::notifySizeUpdate( const awt::Rectangle& rBounds )
    {
        setSize( ::basegfx::B2ISize(rBounds.Width, rBounds.Height) );
    }

    SurfaceSharedPtr SpriteDeviceHelper::getSurface()
    {
        return mpBufferSurface;
    }

    SurfaceSharedPtr SpriteDeviceHelper::getBufferSurface()
    {
        return mpBufferSurface;
    }

    SurfaceSharedPtr SpriteDeviceHelper::getWindowSurface()
    {
        return DeviceHelper::getSurface();
    }

    SurfaceSharedPtr SpriteDeviceHelper::createSurface( const ::basegfx::B2ISize& rSize, Content aContent )
    {
		if( mpBufferSurface )
			return mpBufferSurface->getSimilar( aContent, rSize.getX(), rSize.getY() );

		return SurfaceSharedPtr();
    }

    SurfaceSharedPtr SpriteDeviceHelper::createSurface( BitmapSystemData& rData, const Size& rSize )
    {
        if( getOutputDevice() )
            return createBitmapSurface( *getOutputDevice(), rData, rSize );

		return SurfaceSharedPtr();
    }


    /** SpriteDeviceHelper::flush  Flush the platform native window
     *
     * Flushes the window by using the internally stored mpSysData.
     *
     **/
    void SpriteDeviceHelper::flush()
    {
        SurfaceSharedPtr pWinSurface=getWindowSurface();
        if( pWinSurface )
            pWinSurface->flush();
    }
}