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 "RenderObject.h"
29#include "StyleResolver.h"
30
31namespace WebCore {
32
33StyleGeneratedImage::StyleGeneratedImage(PassRefPtr<CSSImageGeneratorValue> value)
34    : m_imageGeneratorValue(value)
35    , m_fixedSize(m_imageGeneratorValue->isFixedSize())
36{
37    m_isGeneratedImage = true;
38}
39
40PassRefPtr<CSSValue> StyleGeneratedImage::cssValue() const
41{
42    return m_imageGeneratorValue;
43}
44
45LayoutSize 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
68void 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
77void StyleGeneratedImage::addClient(RenderObject* renderer)
78{
79    m_imageGeneratorValue->addClient(renderer);
80}
81
82void StyleGeneratedImage::removeClient(RenderObject* renderer)
83{
84    m_imageGeneratorValue->removeClient(renderer);
85}
86
87PassRefPtr<Image> StyleGeneratedImage::image(RenderObject* renderer, const IntSize& size) const
88{
89    return m_imageGeneratorValue->image(renderer, size);
90}
91
92bool StyleGeneratedImage::knownToBeOpaque(const RenderObject* renderer) const
93{
94    return m_imageGeneratorValue->knownToBeOpaque(renderer);
95}
96
97}
98