office-gobmx/canvas/source/cairo/cairo_canvas.cxx

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#include <canvas/debug.hxx>
#include <canvas/verbosetrace.hxx>
#include <canvas/canvastools.hxx>
#include <tools/diagnose_ex.h>

#include <osl/mutex.hxx>

#include <com/sun/star/registry/XRegistryKey.hpp>
#include <com/sun/star/lang/XSingleServiceFactory.hpp>
#include <com/sun/star/uno/XComponentContext.hpp>
#include <com/sun/star/lang/NoSupportException.hpp>

#include <toolkit/helper/vclunohelper.hxx>

#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/tools/canvastools.hxx>
#include <basegfx/numeric/ftools.hxx>

#include <vcl/sysdata.hxx>

#include "cairo_canvas.hxx"

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

namespace cairocanvas
{
    Canvas::Canvas( const uno::Sequence< uno::Any >&                aArguments,
                    const uno::Reference< uno::XComponentContext >& rxContext ) :
        maArguments(aArguments),
        mxComponentContext( rxContext )
    {
    }

    void Canvas::initialize()
    {
        // #i64742# Only perform initialization when not in probe mode
        if( maArguments.getLength() == 0 )
            return;

        /* maArguments:
           0: ptr to creating instance (Window or VirtualDevice)
           1: SystemEnvData as a streamed Any (or empty for VirtualDevice)
           2: current bounds of creating instance
           3: bool, denoting always on top state for Window (always false for VirtualDevice)
           4: XWindow for creating Window (or empty for VirtualDevice)
           5: SystemGraphicsData as a streamed Any
         */
        VERBOSE_TRACE("Canvas created %p\n", this);

        ENSURE_ARG_OR_THROW( maArguments.getLength() >= 6 &&
                             maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER &&
                             maArguments[5].getValueTypeClass() == uno::TypeClass_SEQUENCE,
                             "Canvas::initialize: wrong number of arguments, or wrong types" );

        // We expect a single Any here, containing a pointer to a valid
        // VCL output device, on which to output (mostly needed for text)
        sal_Int64 nPtr = 0;
        maArguments[0] >>= nPtr;
        OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);

        ENSURE_ARG_OR_THROW( pOutDev != NULL,
                             "Canvas::initialize: invalid OutDev pointer" );

        awt::Rectangle aBounds;
        maArguments[2] >>= aBounds;

        uno::Sequence<sal_Int8> aSeq;
        maArguments[5] >>= aSeq;

        const SystemGraphicsData* pSysData=reinterpret_cast<const SystemGraphicsData*>(aSeq.getConstArray());
        if( !pSysData || !pSysData->nSize )
            throw lang::NoSupportException(
                ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
                                     "Passed SystemGraphicsData invalid!")),
                NULL);

        bool bHasXRender = IsCairoWorking(pOutDev);
        ENSURE_ARG_OR_THROW( bHasXRender == true,
                             "SpriteCanvas::SpriteCanvas: No RENDER extension" );

        // setup helper
        maDeviceHelper.init( *this,
                             *pOutDev );

        maCanvasHelper.init( basegfx::B2ISize(aBounds.Width, aBounds.Height),
                             *this, this );

        // forward surface to render on to canvashelper
        maCanvasHelper.setSurface(
            maDeviceHelper.getSurface(),
            false );

        maArguments.realloc(0);
    }

    Canvas::~Canvas()
    {
        OSL_TRACE( "CairoCanvas destroyed" );
    }

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

        mxComponentContext.clear();

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

    ::rtl::OUString SAL_CALL Canvas::getServiceName(  ) throw (uno::RuntimeException)
    {
        return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( CANVAS_SERVICE_NAME ) );
    }

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

    SurfaceSharedPtr Canvas::getSurface()
    {
        return maDeviceHelper.getSurface();
    }

    SurfaceSharedPtr Canvas::createSurface( const ::basegfx::B2ISize& rSize, Content aContent )
    {
        return maDeviceHelper.createSurface( rSize, aContent );
    }

    SurfaceSharedPtr Canvas::createSurface( ::Bitmap& rBitmap )
    {
        SurfaceSharedPtr pSurface;

        BitmapSystemData aData;
        if( rBitmap.GetSystemData( aData ) ) {
            const Size& rSize = rBitmap.GetSizePixel();

            pSurface = maDeviceHelper.createSurface( aData, rSize );
        }

        return pSurface;
    }

    SurfaceSharedPtr Canvas::changeSurface( bool, bool )
    {
        // non-modifiable surface here
        return SurfaceSharedPtr();
    }

    OutputDevice* Canvas::getOutputDevice()
    {
        return maDeviceHelper.getOutputDevice();
    }
}

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