1/*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 * (C) 2000 Antti Koivisto (koivisto@kde.org)
4 * (C) 2000 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public License
18 * along with this library; see the file COPYING.LIB. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 *
22 */
23
24#include "config.h"
25#include "StyleGeneratedImage.h"
26
27#include "CSSImageGeneratorValue.h"
28#include "RenderElement.h"
29#include "StyleResolver.h"
30
31namespace WebCore {
32
33StyleGeneratedImage::StyleGeneratedImage(Ref<CSSImageGeneratorValue>&& value)
34 : m_imageGeneratorValue(WTFMove(value))
35 , m_fixedSize(m_imageGeneratorValue->isFixedSize())
36{
37 m_isGeneratedImage = true;
38}
39
40Ref<CSSValue> StyleGeneratedImage::cssValue() const
41{
42 return m_imageGeneratorValue.copyRef();
43}
44
45bool StyleGeneratedImage::isPending() const
46{
47 return m_imageGeneratorValue->isPending();
48}
49
50void StyleGeneratedImage::load(CachedResourceLoader& loader, const ResourceLoaderOptions& options)
51{
52 m_imageGeneratorValue->loadSubimages(loader, options);
53}
54
55FloatSize StyleGeneratedImage::imageSize(const RenderElement* renderer, float multiplier) const
56{
57 ASSERT(renderer);
58 if (m_fixedSize) {
59 FloatSize fixedSize = m_imageGeneratorValue->fixedSize(*renderer);
60 if (multiplier == 1.0f)
61 return fixedSize;
62
63 float width = fixedSize.width() * multiplier;
64 float height = fixedSize.height() * multiplier;
65
66 // Don't let images that have a width/height >= 1 shrink below 1 device pixel when zoomed.
67 float deviceScaleFactor = renderer ? renderer->document().deviceScaleFactor() : 1;
68 if (fixedSize.width() > 0)
69 width = std::max<float>(1 / deviceScaleFactor, width);
70
71 if (fixedSize.height() > 0)
72 height = std::max<float>(1 / deviceScaleFactor, height);
73
74 return FloatSize(width, height);
75 }
76
77 return m_containerSize;
78}
79
80void StyleGeneratedImage::computeIntrinsicDimensions(const RenderElement* renderer, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio)
81{
82 // At a zoom level of 1 the image is guaranteed to have a device pixel size.
83 FloatSize size = floorSizeToDevicePixels(LayoutSize(imageSize(renderer, 1)), renderer ? renderer->document().deviceScaleFactor() : 1);
84 intrinsicWidth = Length(size.width(), Fixed);
85 intrinsicHeight = Length(size.height(), Fixed);
86 intrinsicRatio = size;
87}
88
89void StyleGeneratedImage::addClient(RenderElement* renderer)
90{
91 ASSERT(renderer);
92 m_imageGeneratorValue->addClient(*renderer);
93}
94
95void StyleGeneratedImage::removeClient(RenderElement* renderer)
96{
97 ASSERT(renderer);
98 m_imageGeneratorValue->removeClient(*renderer);
99}
100
101RefPtr<Image> StyleGeneratedImage::image(RenderElement* renderer, const FloatSize& size) const
102{
103 ASSERT(renderer);
104 return m_imageGeneratorValue->image(*renderer, size);
105}
106
107bool StyleGeneratedImage::knownToBeOpaque(const RenderElement* renderer) const
108{
109 ASSERT(renderer);
110 return m_imageGeneratorValue->knownToBeOpaque(*renderer);
111}
112
113}
114