cairo_cachedbitmap.cxx

Go to the documentation of this file.

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */
 
#include <sal/config.h>
 
#include <com/sun/star/rendering/XCanvas.hpp>
#include <com/sun/star/rendering/RepaintResult.hpp>
#include <utility>
#include <comphelper/diagnose_ex.hxx>
 
#include "cairo_cachedbitmap.hxx"
#include "cairo_repainttarget.hxx"
 
 
using namespace ::cairo;
using namespace ::com::sun::star;
 
namespace cairocanvas
{
    CachedBitmap::CachedBitmap( SurfaceSharedPtr                            pSurface,
                                const rendering::ViewState&                 rUsedViewState,
                                rendering::RenderState                      aUsedRenderState,
                                const uno::Reference< rendering::XCanvas >& rTarget ) :
        CachedPrimitiveBase( rUsedViewState, rTarget ),
        mpSurface(std::move( pSurface )),
        maRenderState(std::move( aUsedRenderState ))
    {}
 
    void SAL_CALL CachedBitmap::disposing()
    {
        ::osl::MutexGuard aGuard( m_aMutex );
 
        mpSurface.reset();
        CachedPrimitiveBase::disposing();
    }
 
    ::sal_Int8 CachedBitmap::doRedraw( const rendering::ViewState&                  rNewState,
                                       const rendering::ViewState&                  /*rOldState*/,
                                       const uno::Reference< rendering::XCanvas >&  rTargetCanvas,
                                       bool                                         bSameViewTransform )
    {
        ENSURE_OR_THROW( bSameViewTransform,
                          "CachedBitmap::doRedraw(): base called with changed view transform "
                          "(told otherwise during construction)" );
 
        RepaintTarget* pTarget = dynamic_cast< RepaintTarget* >(rTargetCanvas.get());
 
        ENSURE_OR_THROW( pTarget,
                          "CachedBitmap::redraw(): cannot cast target to RepaintTarget" );
 
        if( !pTarget->repaint( mpSurface,
                               rNewState,
                               maRenderState ) )
        {
            // target failed to repaint
            return rendering::RepaintResult::FAILED;
        }
 
        return rendering::RepaintResult::REDRAWN;
    }
}
 
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */