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 "RenderImageResource.h"
30
31#include "CachedImage.h"
32#include "Image.h"
33#include "RenderElement.h"
34#include "RenderImage.h"
35#include "RenderImageResourceStyleImage.h"
36
37namespace WebCore {
38
39RenderImageResource::RenderImageResource()
40    : m_renderer(0)
41{
42}
43
44RenderImageResource::~RenderImageResource()
45{
46}
47
48void RenderImageResource::initialize(RenderElement* renderer)
49{
50    ASSERT(!m_renderer);
51    ASSERT(renderer);
52    m_renderer = renderer;
53}
54
55void RenderImageResource::shutdown()
56{
57    ASSERT(m_renderer);
58
59    if (m_cachedImage)
60        m_cachedImage->removeClient(m_renderer);
61}
62
63void RenderImageResource::setCachedImage(CachedImage* newImage)
64{
65    ASSERT(m_renderer);
66
67    if (m_cachedImage == newImage)
68        return;
69
70    if (m_cachedImage)
71        m_cachedImage->removeClient(m_renderer);
72    m_cachedImage = newImage;
73    if (m_cachedImage) {
74        m_cachedImage->addClient(m_renderer);
75        if (m_cachedImage->errorOccurred())
76            m_renderer->imageChanged(m_cachedImage.get());
77    }
78}
79
80void RenderImageResource::resetAnimation()
81{
82    ASSERT(m_renderer);
83
84    if (!m_cachedImage)
85        return;
86
87    image()->resetAnimation();
88
89    if (!m_renderer->needsLayout())
90        m_renderer->repaint();
91}
92
93PassRefPtr<Image> RenderImageResource::image(int, int) const
94{
95    return m_cachedImage ? m_cachedImage->imageForRenderer(m_renderer) : Image::nullImage();
96}
97
98bool RenderImageResource::errorOccurred() const
99{
100    return m_cachedImage && m_cachedImage->errorOccurred();
101}
102
103void RenderImageResource::setContainerSizeForRenderer(const IntSize& imageContainerSize)
104{
105    ASSERT(m_renderer);
106    if (m_cachedImage)
107        m_cachedImage->setContainerSizeForRenderer(m_renderer, imageContainerSize, m_renderer->style().effectiveZoom());
108}
109
110bool RenderImageResource::imageHasRelativeWidth() const
111{
112    return m_cachedImage ? m_cachedImage->imageHasRelativeWidth() : false;
113}
114
115bool RenderImageResource::imageHasRelativeHeight() const
116{
117    return m_cachedImage ? m_cachedImage->imageHasRelativeHeight() : false;
118}
119
120LayoutSize RenderImageResource::imageSize(float multiplier) const
121{
122    return getImageSize(multiplier, CachedImage::UsedSize);
123}
124
125LayoutSize RenderImageResource::intrinsicSize(float multiplier) const
126{
127    return getImageSize(multiplier, CachedImage::IntrinsicSize);
128}
129
130LayoutSize RenderImageResource::getImageSize(float multiplier, CachedImage::SizeType type) const
131{
132    if (!m_cachedImage)
133        return LayoutSize();
134    LayoutSize size = m_cachedImage->imageSizeForRenderer(m_renderer, multiplier, type);
135    if (m_renderer && m_renderer->isRenderImage())
136        size.scale(toRenderImage(m_renderer)->imageDevicePixelRatio());
137    return size;
138}
139
140} // namespace WebCore
141