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 "core/rendering/style/StyleGeneratedImage.h"
26
27 #include "core/css/CSSImageGeneratorValue.h"
28 #include "core/css/resolver/StyleResolver.h"
29 #include "core/rendering/RenderObject.h"
30
31 namespace WebCore {
32
StyleGeneratedImage(PassRefPtrWillBeRawPtr<CSSImageGeneratorValue> value)33 StyleGeneratedImage::StyleGeneratedImage(PassRefPtrWillBeRawPtr<CSSImageGeneratorValue> value)
34 : m_imageGeneratorValue(value)
35 , m_fixedSize(m_imageGeneratorValue->isFixedSize())
36 {
37 m_isGeneratedImage = true;
38 }
39
cssValue() const40 PassRefPtrWillBeRawPtr<CSSValue> StyleGeneratedImage::cssValue() const
41 {
42 return m_imageGeneratorValue.get();
43 }
44
imageSize(const RenderObject * renderer,float multiplier) const45 LayoutSize StyleGeneratedImage::imageSize(const RenderObject* renderer, float multiplier) const
46 {
47 if (m_fixedSize) {
48 IntSize fixedSize = m_imageGeneratorValue->fixedSize(renderer);
49 if (multiplier == 1.0f)
50 return fixedSize;
51
52 LayoutUnit width = fixedSize.width() * multiplier;
53 LayoutUnit height = fixedSize.height() * multiplier;
54
55 // Don't let images that have a width/height >= 1 shrink below 1 when zoomed.
56 if (fixedSize.width() > 0)
57 width = max<LayoutUnit>(1, width);
58
59 if (fixedSize.height() > 0)
60 height = max<LayoutUnit>(1, height);
61
62 return LayoutSize(width, height);
63 }
64
65 return m_containerSize;
66 }
67
computeIntrinsicDimensions(const RenderObject * renderer,Length & intrinsicWidth,Length & intrinsicHeight,FloatSize & intrinsicRatio)68 void StyleGeneratedImage::computeIntrinsicDimensions(const RenderObject* renderer, Length& intrinsicWidth, Length& intrinsicHeight, FloatSize& intrinsicRatio)
69 {
70 // At a zoom level of 1 the image is guaranteed to have an integer size.
71 IntSize size = flooredIntSize(imageSize(renderer, 1));
72 intrinsicWidth = Length(size.width(), Fixed);
73 intrinsicHeight = Length(size.height(), Fixed);
74 intrinsicRatio = size;
75 }
76
addClient(RenderObject * renderer)77 void StyleGeneratedImage::addClient(RenderObject* renderer)
78 {
79 m_imageGeneratorValue->addClient(renderer, IntSize());
80 }
81
removeClient(RenderObject * renderer)82 void StyleGeneratedImage::removeClient(RenderObject* renderer)
83 {
84 m_imageGeneratorValue->removeClient(renderer);
85 }
86
image(RenderObject * renderer,const IntSize & size) const87 PassRefPtr<Image> StyleGeneratedImage::image(RenderObject* renderer, const IntSize& size) const
88 {
89 return m_imageGeneratorValue->image(renderer, size);
90 }
91
knownToBeOpaque(const RenderObject * renderer) const92 bool StyleGeneratedImage::knownToBeOpaque(const RenderObject* renderer) const
93 {
94 return m_imageGeneratorValue->knownToBeOpaque(renderer);
95 }
96
97 }
98