third_party/WebKit/Source/core/layout/LayoutImageResource.cpp

   1 /*
   2  * Copyright (C) 1999 Lars Knoll <knoll@kde.org>
   3  * Copyright (C) 1999 Antti Koivisto <koivisto@kde.org>
   4  * Copyright (C) 2000 Dirk Mueller <mueller@kde.org>
   5  * Copyright (C) 2006 Allan Sandfeld Jensen <kde@carewolf.com>
   6  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
   7  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
   8  * Copyright (C) 2010 Google Inc. All rights reserved.
   9  * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Library General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Library General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Library General Public License
  22  * along with this library; see the file COPYING.LIB.  If not, write to
  23  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24  * Boston, MA 02110-1301, USA.
  25  *
  26  */
  27
  28 #include "config.h"
  29 #include "core/layout/LayoutImageResource.h"
  30
  31 #include "core/layout/LayoutImage.h"
  32
  33 namespace blink {
  34
  35 LayoutImageResource::LayoutImageResource()
  36     : m_layoutObject(nullptr)
  37     , m_cachedImage(nullptr)
  38 {
  39 }
  40
  41 LayoutImageResource::~LayoutImageResource()
  42 {
  43 }
  44
  45 void LayoutImageResource::initialize(LayoutObject* layoutObject)
  46 {
  47     ASSERT(!m_layoutObject);
  48     ASSERT(layoutObject);
  49     m_layoutObject = layoutObject;
  50 }
  51
  52 void LayoutImageResource::shutdown()
  53 {
  54     ASSERT(m_layoutObject);
  55
  56     if (m_cachedImage)
  57         m_cachedImage->removeClient(m_layoutObject);
  58 }
  59
  60 void LayoutImageResource::setImageResource(ImageResource* newImage)
  61 {
  62     ASSERT(m_layoutObject);
  63
  64     if (m_cachedImage == newImage)
  65         return;
  66
  67     if (m_cachedImage)
  68         m_cachedImage->removeClient(m_layoutObject);
  69     m_cachedImage = newImage;
  70     if (m_cachedImage) {
  71         m_cachedImage->addClient(m_layoutObject);
  72         if (m_cachedImage->errorOccurred())
  73             m_layoutObject->imageChanged(m_cachedImage.get());
  74     } else {
  75         m_layoutObject->imageChanged(m_cachedImage.get());
  76     }
  77 }
  78
  79 void LayoutImageResource::resetAnimation()
  80 {
  81     ASSERT(m_layoutObject);
  82
  83     if (!m_cachedImage)
  84         return;
  85
  86     image()->resetAnimation();
  87
  88     m_layoutObject->setShouldDoFullPaintInvalidation();
  89 }
  90
  91 void LayoutImageResource::setContainerSizeForLayoutObject(const IntSize& imageContainerSize)
  92 {
  93     ASSERT(m_layoutObject);
  94     if (m_cachedImage)
  95         m_cachedImage->setContainerSizeForLayoutObject(m_layoutObject, imageContainerSize, m_layoutObject->style()->effectiveZoom());
  96 }
  97
  98 LayoutSize LayoutImageResource::getImageSize(float multiplier, ImageResource::SizeType type) const
  99 {
 100     if (!m_cachedImage)
 101         return LayoutSize();
 102     LayoutSize size = m_cachedImage->imageSizeForLayoutObject(m_layoutObject, multiplier, type);
 103     if (m_layoutObject && m_layoutObject->isLayoutImage() && size.width() && size.height())
 104         size.scale(toLayoutImage(m_layoutObject)->imageDevicePixelRatio());
 105     return size;
 106 }
 107
 108 } // namespace blink