1 /* 2 * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Dirk Mueller (mueller (at) 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 33 StyleGeneratedImage::StyleGeneratedImage(PassRefPtr<CSSImageGeneratorValue> value) 34 : m_imageGeneratorValue(value) 35 , m_fixedSize(m_imageGeneratorValue->isFixedSize()) 36 { 37 m_isGeneratedImage = true; 38 } 39 40 PassRefPtr<CSSValue> StyleGeneratedImage::cssValue() const 41 { 42 return m_imageGeneratorValue; 43 } 44 45 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 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 77 void StyleGeneratedImage::addClient(RenderObject* renderer) 78 { 79 m_imageGeneratorValue->addClient(renderer, IntSize()); 80 } 81 82 void StyleGeneratedImage::removeClient(RenderObject* renderer) 83 { 84 m_imageGeneratorValue->removeClient(renderer); 85 } 86 87 PassRefPtr<Image> StyleGeneratedImage::image(RenderObject* renderer, const IntSize& size) const 88 { 89 return m_imageGeneratorValue->image(renderer, size); 90 } 91 92 bool StyleGeneratedImage::knownToBeOpaque(const RenderObject* renderer) const 93 { 94 return m_imageGeneratorValue->knownToBeOpaque(renderer); 95 } 96 97 } 98