Quelle  cairo_canvascustomsprite.hxx   Sprache: C

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

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

#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/rendering/XBitmapCanvas.hpp>
#include <com/sun/star/rendering/XCustomSprite.hpp>
#include <com/sun/star/rendering/XIntegerBitmap.hpp>

#include <basegfx/point/b2dpoint.hxx>

#include <base/basemutexhelper.hxx>
#include <base/canvascustomspritebase.hxx>

#include <vcl/cairo.hxx>

#include "cairo_sprite.hxx"
#include "cairo_canvashelper.hxx"
#include "cairo_repainttarget.hxx"
#include "cairo_spritehelper.hxx"
#include "cairo_spritecanvas.hxx"


namespace cairocanvas
{
    typedef ::cppu::WeakComponentImplHelper< css::rendering::XCustomSprite,
                                             css::rendering::XBitmapCanvas,
                                             css::rendering::XIntegerBitmap,
                                             css::lang::XServiceInfo >  CanvasCustomSpriteBase_Base;
    /** Mixin Sprite

        Have to mixin the Sprite interface before deriving from
        ::canvas::CanvasCustomSpriteBase, 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::CanvasCustomSpriteBase directly from
        ::canvas::Sprite (because derivees of
        ::canvas::CanvasCustomSpriteBase 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 CanvasCustomSpriteSpriteBase_Base : public ::canvas::BaseMutexHelper< CanvasCustomSpriteBase_Base >,
                                                 public Sprite,
                                              public SurfaceProvider
    {
    };

    typedef ::canvas::CanvasCustomSpriteBase< CanvasCustomSpriteSpriteBase_Base,
                                              SpriteHelper,
                                              CanvasHelper,
                                              ::osl::MutexGuard,
                                              ::cppu::OWeakObject >                     CanvasCustomSpriteBaseT;

    /* Definition of CanvasCustomSprite class */

    class CanvasCustomSprite : public CanvasCustomSpriteBaseT,
                               public RepaintTarget
    {
    public:
        /** Create a custom sprite

            @param rSpriteSize
            Size of the sprite in pixel

            @param rRefDevice
            Associated output device

            @param rSpriteCanvas
            Target canvas

            @param rDevice
            Target DX device
         */
        CanvasCustomSprite( const css::geometry::RealSize2D&   rSpriteSize,
                            const SpriteCanvasRef&                          rRefDevice );

        virtual void disposeThis() override;

        // Forwarding the XComponent implementation to the
        // cppu::ImplHelper templated base
        //                                    Classname           Base doing refcount          Base implementing the XComponent interface
        //                                          |                    |                         |
        //                                          V                    V                         V
        DECLARE_UNO3_XCOMPONENT_AGG_DEFAULTS( CanvasCustomSprite, CanvasCustomSpriteBase_Base, ::cppu::WeakComponentImplHelperBase )

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

        // Sprite
        virtual void redraw( const ::cairo::CairoSharedPtr& pCairo,
                             bool                           bBufferedUpdate ) const override;
        virtual void redraw( const ::cairo::CairoSharedPtr& pCairo,
                             const ::basegfx::B2DPoint&     rOrigOutputPos,
                             bool                           bBufferedUpdate ) const override;

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

    private:
        /** MUST hold here, too, since CanvasHelper only contains a
            raw pointer (without refcounting)
        */
        SpriteCanvasRef           mpSpriteCanvas;
        ::cairo::SurfaceSharedPtr mpBufferSurface;
        ::basegfx::B2ISize        maSize;
    };
}

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