1/* 2 * Copyright (C) 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "CSSCanvasValue.h" 28 29#include "ImageBuffer.h" 30#include "RenderObject.h" 31 32namespace WebCore { 33 34CSSCanvasValue::~CSSCanvasValue() 35{ 36 if (m_element) 37 m_element->setObserver(0); 38} 39 40String CSSCanvasValue::cssText() const 41{ 42 String result = "-webkit-canvas("; 43 result += m_name + ")"; 44 return result; 45} 46 47void CSSCanvasValue::canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect) 48{ 49 IntRect imageChangeRect = enclosingIntRect(changedRect); 50 RenderObjectSizeCountMap::const_iterator end = m_clients.end(); 51 for (RenderObjectSizeCountMap::const_iterator curr = m_clients.begin(); curr != end; ++curr) 52 curr->first->imageChanged(static_cast<WrappedImagePtr>(this), &imageChangeRect); 53} 54 55void CSSCanvasValue::canvasResized(HTMLCanvasElement*) 56{ 57 RenderObjectSizeCountMap::const_iterator end = m_clients.end(); 58 for (RenderObjectSizeCountMap::const_iterator curr = m_clients.begin(); curr != end; ++curr) 59 curr->first->imageChanged(static_cast<WrappedImagePtr>(this)); 60} 61 62void CSSCanvasValue::canvasDestroyed(HTMLCanvasElement* element) 63{ 64 ASSERT(element == m_element); 65 if (element == m_element) 66 m_element = 0; 67} 68 69IntSize CSSCanvasValue::fixedSize(const RenderObject* renderer) 70{ 71 if (HTMLCanvasElement* elt = element(renderer->document())) 72 return IntSize(elt->width(), elt->height()); 73 return IntSize(); 74} 75 76HTMLCanvasElement* CSSCanvasValue::element(Document* document) 77{ 78 if (!m_element) { 79 m_element = document->getCSSCanvasElement(m_name); 80 if (!m_element) 81 return 0; 82 m_element->setObserver(this); 83 } 84 return m_element; 85} 86 87Image* CSSCanvasValue::image(RenderObject* renderer, const IntSize& /*size*/) 88{ 89 ASSERT(m_clients.contains(renderer)); 90 HTMLCanvasElement* elt = element(renderer->document()); 91 if (!elt || !elt->buffer()) 92 return 0; 93 return elt->buffer()->image(); 94} 95 96} // namespace WebCore 97