Quelle  cairo_spritecanvas.hxx   Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#pragma once

#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/lang/XServiceName.hpp>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/awt/XWindowListener.hpp>
#include <com/sun/star/util/XUpdatable.hpp>
#include <com/sun/star/rendering/XSpriteCanvas.hpp>
#include <com/sun/star/rendering/XIntegerBitmap.hpp>
#include <com/sun/star/rendering/XGraphicDevice.hpp>
#include <com/sun/star/rendering/XBufferController.hpp>

#include <cppuhelper/compbase.hxx>
#include <comphelper/uno3.hxx>

#include <base/spritecanvasbase.hxx>
#include <base/spritesurface.hxx>
#include <base/disambiguationhelper.hxx>
#include <base/bufferedgraphicdevicebase.hxx>

#include "cairo_spritedevicehelper.hxx"
#include "cairo_repainttarget.hxx"
#include "cairo_surfaceprovider.hxx"
#include "cairo_spritecanvashelper.hxx"

namespace cairocanvas
{
    typedef ::cppu::WeakComponentImplHelper< css::rendering::XSpriteCanvas,
                                             css::rendering::XIntegerBitmap,
                                             css::rendering::XGraphicDevice,
                                             css::lang::XMultiServiceFactory,
                                             css::rendering::XBufferController,
                                             css::awt::XWindowListener,
                                             css::util::XUpdatable,
                                             css::beans::XPropertySet,
                                             css::lang::XServiceName,
                                             css::lang::XServiceInfo >  WindowGraphicDeviceBase_Base;
    typedef ::canvas::BufferedGraphicDeviceBase< ::canvas::DisambiguationHelper< WindowGraphicDeviceBase_Base >,
                                                 SpriteDeviceHelper,
                                                 ::osl::MutexGuard,
                                                 ::cppu::OWeakObject > SpriteCanvasBase_Base;
    /** Mixin SpriteSurface

        Have to mixin the SpriteSurface before deriving from
        ::canvas::SpriteCanvasBase, as this template should already
        implement some of those interface methods.

        The reason why this appears kinda convoluted is the fact that
        we cannot specify non-IDL types as WeakComponentImplHelper
        template args, and furthermore, don't want to derive
        ::canvas::SpriteCanvasBase directly from
        ::canvas::SpriteSurface (because derivees of
        ::canvas::SpriteCanvasBase have to explicitly forward the
        XInterface methods (e.g. via DECLARE_UNO3_AGG_DEFAULTS)
        anyway). Basically, ::canvas::CanvasCustomSpriteBase should
        remain a base class that provides implementation, not to
        enforce any specific interface on its derivees.
     */
    class SpriteCanvasBaseSpriteSurface_Base : public SpriteCanvasBase_Base,
                                               public ::canvas::SpriteSurface,
                                               public SurfaceProvider
    {
    };

    typedef ::canvas::SpriteCanvasBase< SpriteCanvasBaseSpriteSurface_Base,
                                        SpriteCanvasHelper,
                                        ::osl::MutexGuard,
                                        ::cppu::OWeakObject >           SpriteCanvasBaseT;

    /** Product of this component's factory.

        The SpriteCanvas object combines the actual Window canvas with
        the XGraphicDevice interface. This is because there's a
        one-to-one relation between them, anyway, since each window
        can have exactly one canvas and one associated
        XGraphicDevice. And to avoid messing around with circular
        references, this is implemented as one single object.
     */
    class SpriteCanvas : public SpriteCanvasBaseT,
                         public RepaintTarget
    {
    public:
        SpriteCanvas( const css::uno::Sequence< css::uno::Any >&                aArguments,
                      const css::uno::Reference< css::uno::XComponentContext >& rxContext );

        void initialize();

        /// Dispose all internal references
        virtual void disposeThis() override;

        // Forwarding the XComponent implementation to the
        // cppu::ImplHelper templated base
        //                                    Classname     Base doing refcounting        Base implementing the XComponent interface
        //                                       |                 |                            |
        //                                       V                 V                            V
        DECLARE_UNO3_XCOMPONENT_AGG_DEFAULTS( SpriteCanvas, WindowGraphicDeviceBase_Base, ::cppu::WeakComponentImplHelperBase )

        // XBufferController (partial)
        virtual sal_Bool SAL_CALL showBuffer( sal_Bool bUpdateAll ) override;
        virtual sal_Bool SAL_CALL switchBuffer( sal_Bool bUpdateAll ) override;

        // XSpriteCanvas (partial)
        virtual sal_Bool SAL_CALL updateScreen( sal_Bool bUpdateAll ) override;

        // XServiceName
        virtual OUString SAL_CALL getServiceName(  ) override;

        //  XServiceInfo
        virtual sal_Bool SAL_CALL supportsService(const OUString& sServiceName) override;
        virtual OUString SAL_CALL getImplementationName() override;
        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;

        // SurfaceProvider
        virtual ::cairo::SurfaceSharedPtr getSurface() override;
        virtual ::cairo::SurfaceSharedPtr createSurface( const ::basegfx::B2ISize& rSize, int aContent ) override;
        virtual ::cairo::SurfaceSharedPtr createSurface( ::Bitmap& rBitmap ) override;
        virtual ::cairo::SurfaceSharedPtr changeSurface() override;
        virtual OutputDevice* getOutputDevice() override;

        // RepaintTarget
        virtual bool repaint( const ::cairo::SurfaceSharedPtr&                pSurface,
                              const css::rendering::ViewState&   viewState,
                              const css::rendering::RenderState& renderState ) override;

        ::cairo::SurfaceSharedPtr const & getWindowSurface() const;
        ::cairo::SurfaceSharedPtr const & getBufferSurface() const;

        const ::basegfx::B2ISize& getSizePixel() const;
        void setSizePixel( const ::basegfx::B2ISize& rSize );
        void flush();

     private:
        css::uno::Sequence< css::uno::Any >                maArguments;
    };

    typedef ::rtl::Reference< SpriteCanvas > SpriteCanvasRef;
}

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