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hyatt@apple.com68382152008-04-17 04:13:36 +00001/*
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
darin@apple.com98a7ac62009-01-05 17:26:53 +000047void CSSCanvasValue::canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect)
hyatt@apple.com68382152008-04-17 04:13:36 +000048{
simon.fraser@apple.comf7d140d2009-01-02 21:04:27 +000049 IntRect imageChangeRect = enclosingIntRect(changedRect);
hyatt@apple.com68382152008-04-17 04:13:36 +000050 HashMap<RenderObject*, IntSize>::const_iterator end = m_clients.end();
51 for (HashMap<RenderObject*, IntSize>::const_iterator curr = m_clients.begin(); curr != end; ++curr)
simon.fraser@apple.comf7d140d2009-01-02 21:04:27 +000052 curr->first->imageChanged(static_cast<WrappedImagePtr>(this), &imageChangeRect);
hyatt@apple.com68382152008-04-17 04:13:36 +000053}
54
darin@apple.com98a7ac62009-01-05 17:26:53 +000055void CSSCanvasValue::canvasResized(HTMLCanvasElement*)
hyatt@apple.com68382152008-04-17 04:13:36 +000056{
57 HashMap<RenderObject*, IntSize>::const_iterator end = m_clients.end();
58 for (HashMap<RenderObject*, IntSize>::const_iterator curr = m_clients.begin(); curr != end; ++curr)
59 curr->first->imageChanged(static_cast<WrappedImagePtr>(this));
60}
61
62IntSize CSSCanvasValue::fixedSize(const RenderObject* renderer)
63{
64 if (HTMLCanvasElement* elt = element(renderer->document()))
65 return IntSize(elt->width(), elt->height());
66 return IntSize();
67}
68
69HTMLCanvasElement* CSSCanvasValue::element(Document* document)
70{
71 if (!m_element) {
72 m_element = document->getCSSCanvasElement(m_name);
73 if (!m_element)
74 return 0;
75 m_element->setObserver(this);
76 }
mitz@apple.com92dc01a2008-10-02 18:48:33 +000077 return m_element;
hyatt@apple.com68382152008-04-17 04:13:36 +000078}
79
80Image* CSSCanvasValue::image(RenderObject* renderer, const IntSize& /*size*/)
81{
82 ASSERT(m_clients.contains(renderer));
83 HTMLCanvasElement* elt = element(renderer->document());
84 if (!elt || !elt->buffer())
85 return 0;
86 return elt->buffer()->image();
87}
88
89} // namespace WebCore