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      1 /*
      2  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
      3  * Copyright (C) 2013 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #include "config.h"
     22 #include "core/svg/graphics/SVGImageCache.h"
     23 
     24 #include "core/loader/cache/ImageResource.h"
     25 #include "core/page/FrameView.h"
     26 #include "core/page/Page.h"
     27 #include "core/platform/graphics/GraphicsContext.h"
     28 #include "core/platform/graphics/ImageBuffer.h"
     29 #include "core/rendering/svg/RenderSVGRoot.h"
     30 #include "core/svg/graphics/SVGImage.h"
     31 #include "core/svg/graphics/SVGImageForContainer.h"
     32 
     33 namespace WebCore {
     34 
     35 SVGImageCache::SVGImageCache(SVGImage* svgImage)
     36     : m_svgImage(svgImage)
     37 {
     38     ASSERT(m_svgImage);
     39 }
     40 
     41 SVGImageCache::~SVGImageCache()
     42 {
     43     m_imageForContainerMap.clear();
     44 }
     45 
     46 void SVGImageCache::removeClientFromCache(const ImageResourceClient* client)
     47 {
     48     ASSERT(client);
     49 
     50     if (m_imageForContainerMap.contains(client))
     51         m_imageForContainerMap.remove(client);
     52 }
     53 
     54 void SVGImageCache::setContainerSizeForRenderer(const ImageResourceClient* client, const IntSize& containerSize, float containerZoom)
     55 {
     56     ASSERT(client);
     57     ASSERT(!containerSize.isEmpty());
     58     ASSERT(containerZoom);
     59 
     60     FloatSize containerSizeWithoutZoom(containerSize);
     61     containerSizeWithoutZoom.scale(1 / containerZoom);
     62 
     63     m_imageForContainerMap.set(client, SVGImageForContainer::create(m_svgImage, containerSizeWithoutZoom, containerZoom));
     64 }
     65 
     66 IntSize SVGImageCache::imageSizeForRenderer(const RenderObject* renderer) const
     67 {
     68     IntSize imageSize = m_svgImage->size();
     69     if (!renderer)
     70         return imageSize;
     71 
     72     ImageForContainerMap::const_iterator it = m_imageForContainerMap.find(renderer);
     73     if (it == m_imageForContainerMap.end())
     74         return imageSize;
     75 
     76     RefPtr<SVGImageForContainer> imageForContainer = it->value;
     77     ASSERT(!imageForContainer->size().isEmpty());
     78     return imageForContainer->size();
     79 }
     80 
     81 // FIXME: This doesn't take into account the animation timeline so animations will not
     82 // restart on page load, nor will two animations in different pages have different timelines.
     83 Image* SVGImageCache::imageForRenderer(const RenderObject* renderer)
     84 {
     85     if (!renderer)
     86         return Image::nullImage();
     87 
     88     ImageForContainerMap::iterator it = m_imageForContainerMap.find(renderer);
     89     if (it == m_imageForContainerMap.end())
     90         return Image::nullImage();
     91 
     92     RefPtr<SVGImageForContainer> imageForContainer = it->value;
     93     ASSERT(!imageForContainer->size().isEmpty());
     94     return imageForContainer.get();
     95 }
     96 
     97 } // namespace WebCore
     98