xref: /trunk/main/canvas/source/cairo/cairo_devicehelper.hxx (revision 91c99ff4)

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 * 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
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 * specific language governing permissions and limitations
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#ifndef _CAIROCANVAS_DEVICEHELPER_HXX
#define _CAIROCANVAS_DEVICEHELPER_HXX

#include <com/sun/star/awt/Rectangle.hpp>
#include <com/sun/star/rendering/XGraphicDevice.hpp>
#include <com/sun/star/rendering/XBufferController.hpp>

#include <boost/utility.hpp>

#include <vcl/window.hxx>
#include <vcl/bitmap.hxx>

#include "cairo_cairo.hxx"
#include "cairo_surfaceprovider.hxx"

/* Definition of DeviceHelper class */

struct SystemEnvData;
class Window;

namespace cairocanvas
{
    class Canvas;
    class CanvasHelper;

    class DeviceHelper : private ::boost::noncopyable
    {
    public:
        DeviceHelper();

        /** init helper

            @param rCanvas
            Owning canvas.

            @param rRefDevice
            Reference output device. Needed for resolution
            calculations etc.
         */
        void init( SurfaceProvider& rSurfaceProvider,
                   OutputDevice&    rRefDevice );

        /// Dispose all internal references
        void disposing();

        // XWindowGraphicDevice
        ::com::sun::star::geometry::RealSize2D getPhysicalResolution();
        ::com::sun::star::geometry::RealSize2D getPhysicalSize();
        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XLinePolyPolygon2D > createCompatibleLinePolyPolygon(
            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >& 								 rDevice,
            const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealPoint2D > >& points );
        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBezierPolyPolygon2D > createCompatibleBezierPolyPolygon(
            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >& 								 		 rDevice,
            const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealBezierSegment2D > >& points );
        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap > createCompatibleBitmap(
            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >& 	rDevice,
            const ::com::sun::star::geometry::IntegerSize2D& 										size );
        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XVolatileBitmap > createVolatileBitmap(
            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >& 	rDevice,
            const ::com::sun::star::geometry::IntegerSize2D& 										size );
        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap > createCompatibleAlphaBitmap(
            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >& 	rDevice,
            const ::com::sun::star::geometry::IntegerSize2D& 										size );
        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XVolatileBitmap > createVolatileAlphaBitmap(
            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >& 	rDevice,
            const ::com::sun::star::geometry::IntegerSize2D& 										size );
        sal_Bool hasFullScreenMode(  );
        sal_Bool enterFullScreenMode( sal_Bool bEnter );

        ::com::sun::star::uno::Any isAccelerated() const;
        ::com::sun::star::uno::Any getDeviceHandle() const;
        ::com::sun::star::uno::Any getSurfaceHandle() const;
        ::com::sun::star::uno::Reference<
            ::com::sun::star::rendering::XColorSpace > getColorSpace() const;

        /** called when DumpScreenContent property is enabled on
            XGraphicDevice, and writes out bitmaps of current screen.
         */
        void dumpScreenContent() const;

        OutputDevice* getOutputDevice() const { return mpRefDevice; }
        const void* getSysData() { return mpSysData; }
        ::cairo::SurfaceSharedPtr getSurface();
        ::cairo::SurfaceSharedPtr createSurface( const ::basegfx::B2ISize& rSize, ::cairo::Content aContent = CAIRO_CONTENT_COLOR_ALPHA );
        ::cairo::SurfaceSharedPtr createSurface( BitmapSystemData& rData, const Size& rSize );

    protected:
        /** init helper

            @param rCanvas
            Owning canvas.

            @param rRefDevice
            Reference output device. Needed for resolution
            calculations etc.
         */
        void implInit( SurfaceProvider& rSurfaceProvider,
                       OutputDevice&    rRefDevice );
        void setSize( const ::basegfx::B2ISize&	rSize );

    private:
        /** Surface provider

            Deliberately not a refcounted reference, because of
            potential circular references for canvas. Provides us with
            our output surface and associated functionality.
         */
        SurfaceProvider*          mpSurfaceProvider;

        OutputDevice*             mpRefDevice;
        const void*               mpSysData;
        ::cairo::SurfaceSharedPtr mpSurface;
    };
}

#endif