OLD | NEW |
1 /* | 1 /* |
2 * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. | 2 * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. |
3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> | 3 * Copyright (C) 2007 Alp Toker <alp@atoker.com> |
4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. | 4 * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. |
5 * | 5 * |
6 * Redistribution and use in source and binary forms, with or without | 6 * Redistribution and use in source and binary forms, with or without |
7 * modification, are permitted provided that the following conditions | 7 * modification, are permitted provided that the following conditions |
8 * are met: | 8 * are met: |
9 * 1. Redistributions of source code must retain the above copyright | 9 * 1. Redistributions of source code must retain the above copyright |
10 * notice, this list of conditions and the following disclaimer. | 10 * notice, this list of conditions and the following disclaimer. |
(...skipping 47 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
58 static const int DefaultHeight = 150; | 58 static const int DefaultHeight = 150; |
59 | 59 |
60 // Firefox limits width/height to 32767 pixels, but slows down dramatically befo
re it | 60 // Firefox limits width/height to 32767 pixels, but slows down dramatically befo
re it |
61 // reaches that limit. We limit by area instead, giving us larger maximum dimens
ions, | 61 // reaches that limit. We limit by area instead, giving us larger maximum dimens
ions, |
62 // in exchange for a smaller maximum canvas size. | 62 // in exchange for a smaller maximum canvas size. |
63 static const int MaxCanvasArea = 32768 * 8192; // Maximum canvas area in CSS pix
els | 63 static const int MaxCanvasArea = 32768 * 8192; // Maximum canvas area in CSS pix
els |
64 | 64 |
65 //In Skia, we will also limit width/height to 32767. | 65 //In Skia, we will also limit width/height to 32767. |
66 static const int MaxSkiaDim = 32767; // Maximum width/height in CSS pixels. | 66 static const int MaxSkiaDim = 32767; // Maximum width/height in CSS pixels. |
67 | 67 |
68 HTMLCanvasElement::HTMLCanvasElement(const QualifiedName& tagName, Document& doc
ument) | 68 HTMLCanvasElement::HTMLCanvasElement(Document& document) |
69 : HTMLElement(tagName, document) | 69 : HTMLElement(canvasTag, document) |
70 , m_size(DefaultWidth, DefaultHeight) | 70 , m_size(DefaultWidth, DefaultHeight) |
71 , m_rendererIsCanvas(false) | 71 , m_rendererIsCanvas(false) |
72 , m_ignoreReset(false) | 72 , m_ignoreReset(false) |
73 , m_accelerationDisabled(false) | 73 , m_accelerationDisabled(false) |
74 , m_externallyAllocatedMemory(0) | 74 , m_externallyAllocatedMemory(0) |
75 , m_deviceScaleFactor(1) | 75 , m_deviceScaleFactor(1) |
76 , m_originClean(true) | 76 , m_originClean(true) |
77 , m_hasCreatedImageBuffer(false) | 77 , m_hasCreatedImageBuffer(false) |
78 , m_didClearImageBuffer(false) | 78 , m_didClearImageBuffer(false) |
79 { | 79 { |
80 ASSERT(hasTagName(canvasTag)); | |
81 ScriptWrappable::init(this); | 80 ScriptWrappable::init(this); |
82 } | 81 } |
83 | 82 |
84 PassRefPtr<HTMLCanvasElement> HTMLCanvasElement::create(Document& document) | 83 PassRefPtr<HTMLCanvasElement> HTMLCanvasElement::create(Document& document) |
85 { | 84 { |
86 return adoptRef(new HTMLCanvasElement(canvasTag, document)); | 85 return adoptRef(new HTMLCanvasElement(document)); |
87 } | |
88 | |
89 PassRefPtr<HTMLCanvasElement> HTMLCanvasElement::create(const QualifiedName& tag
Name, Document& document) | |
90 { | |
91 return adoptRef(new HTMLCanvasElement(tagName, document)); | |
92 } | 86 } |
93 | 87 |
94 HTMLCanvasElement::~HTMLCanvasElement() | 88 HTMLCanvasElement::~HTMLCanvasElement() |
95 { | 89 { |
96 setExternallyAllocatedMemory(0); | 90 setExternallyAllocatedMemory(0); |
97 HashSet<CanvasObserver*>::iterator end = m_observers.end(); | 91 HashSet<CanvasObserver*>::iterator end = m_observers.end(); |
98 for (HashSet<CanvasObserver*>::iterator it = m_observers.begin(); it != end;
++it) | 92 for (HashSet<CanvasObserver*>::iterator it = m_observers.begin(); it != end;
++it) |
99 (*it)->canvasDestroyed(this); | 93 (*it)->canvasDestroyed(this); |
100 | 94 |
101 m_context.clear(); // Ensure this goes away before the ImageBuffer. | 95 m_context.clear(); // Ensure this goes away before the ImageBuffer. |
(...skipping 453 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
555 ASSERT(m_hasCreatedImageBuffer); | 549 ASSERT(m_hasCreatedImageBuffer); |
556 IntSize unscaledSize = size(); | 550 IntSize unscaledSize = size(); |
557 IntSize size = convertLogicalToDevice(unscaledSize); | 551 IntSize size = convertLogicalToDevice(unscaledSize); |
558 AffineTransform transform; | 552 AffineTransform transform; |
559 if (size.width() && size.height()) | 553 if (size.width() && size.height()) |
560 transform.scaleNonUniform(size.width() / unscaledSize.width(), size.heig
ht() / unscaledSize.height()); | 554 transform.scaleNonUniform(size.width() / unscaledSize.width(), size.heig
ht() / unscaledSize.height()); |
561 return m_imageBuffer->baseTransform() * transform; | 555 return m_imageBuffer->baseTransform() * transform; |
562 } | 556 } |
563 | 557 |
564 } | 558 } |
OLD | NEW |