Quelle  cairo_canvascustomsprite.cxx   Sprache: C

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <sal/config.h>
#include <sal/log.hxx>

#include <basegfx/point/b2dpoint.hxx>
#include <cppuhelper/supportsservice.hxx>
#include <comphelper/diagnose_ex.hxx>

#include <canvas/canvastools.hxx>
#include <cairo.h>

#include "cairo_canvascustomsprite.hxx"
#include "cairo_spritecanvas.hxx"


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

namespace cairocanvas
{
    CanvasCustomSprite::CanvasCustomSprite( const css::geometry::RealSize2D&   rSpriteSize,
                                            const SpriteCanvasRef&                          rRefDevice ) :
        mpSpriteCanvas( rRefDevice ),
        maSize( ::canvas::tools::roundUp( rSpriteSize.Width ),
                ::canvas::tools::roundUp( rSpriteSize.Height ) )
    {
        ENSURE_OR_THROW( rRefDevice,
                          "CanvasCustomSprite::CanvasCustomSprite(): Invalid sprite canvas" );

        SAL_INFO( "canvas.cairo", "sprite size: " << ::canvas::tools::roundUp( rSpriteSize.Width ) << ", " << ::canvas::tools::roundUp( rSpriteSize.Height ));

        mpBufferSurface = mpSpriteCanvas->createSurface( maSize, CAIRO_CONTENT_COLOR_ALPHA );

        maCanvasHelper.init( maSize,
                             *rRefDevice,
                             rRefDevice.get() );
        maCanvasHelper.setSurface( mpBufferSurface, true );

        maSpriteHelper.init( rSpriteSize,
                             rRefDevice );
        maSpriteHelper.setSurface( mpBufferSurface );

        // clear sprite to 100% transparent
        maCanvasHelper.clear();
    }

    void CanvasCustomSprite::disposeThis()
    {
        ::osl::MutexGuard aGuard( m_aMutex );

        mpSpriteCanvas.clear();
        mpBufferSurface.reset();

        // forward to parent
        CanvasCustomSpriteBaseT::disposeThis();
    }

    void CanvasCustomSprite::redraw( const CairoSharedPtr& pCairo,
                                     bool                  bBufferedUpdate ) const
    {
        ::osl::MutexGuard aGuard( m_aMutex );

        redraw( pCairo, maSpriteHelper.getPosPixel(), bBufferedUpdate );
    }

    void CanvasCustomSprite::redraw( const CairoSharedPtr&      pCairo,
                                     const ::basegfx::B2DPoint& rOrigOutputPos,
                                     bool                       bBufferedUpdate ) const
    {
        ::osl::MutexGuard aGuard( m_aMutex );

        maSpriteHelper.redraw( pCairo,
                               rOrigOutputPos,
                               mbSurfaceDirty,
                               bBufferedUpdate );

        mbSurfaceDirty = false;
    }

    bool CanvasCustomSprite::repaint( const SurfaceSharedPtr&       pSurface,
                                      const rendering::ViewState&   viewState,
                                      const rendering::RenderState& renderState )
    {
        return maCanvasHelper.repaint( pSurface, viewState, renderState );
    }

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

    SurfaceSharedPtr CanvasCustomSprite::createSurface( const ::basegfx::B2ISize& rSize, int aContent )
    {
        return mpSpriteCanvas->createSurface(rSize,aContent);
    }

    SurfaceSharedPtr CanvasCustomSprite::createSurface( ::Bitmap& rBitmap )
    {
        return mpSpriteCanvas->createSurface(rBitmap);
    }

    SurfaceSharedPtr CanvasCustomSprite::changeSurface()
    {
        SAL_INFO( "canvas.cairo", "replacing sprite background surface");

        mpBufferSurface = mpSpriteCanvas->createSurface( maSize, CAIRO_CONTENT_COLOR );
        maSpriteHelper.setSurface( mpBufferSurface );

        return mpBufferSurface;
    }

    OutputDevice* CanvasCustomSprite::getOutputDevice()
    {
        return mpSpriteCanvas->getOutputDevice();
    }

    OUString SAL_CALL CanvasCustomSprite::getImplementationName()
    {
        return u"CairoCanvas.CanvasCustomSprite"_ustr;
    }

    sal_Bool SAL_CALL CanvasCustomSprite::supportsService( const OUString& ServiceName )
    {
        return cppu::supportsService( this, ServiceName );
    }

    uno::Sequence< OUString > SAL_CALL CanvasCustomSprite::getSupportedServiceNames()
    {
        return { u"com.sun.star.rendering.CanvasCustomSprite"_ustr };
    }
}

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