1 /*
2 * Copyright (C) 2007, 2008, 2009, 2010 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
28 #if ENABLE(VIDEO)
29 #include "HTMLVideoElement.h"
30
31 #include "Attribute.h"
32 #include "CSSPropertyNames.h"
33 #include "Chrome.h"
34 #include "ChromeClient.h"
35 #include "Document.h"
36 #include "ExceptionCode.h"
37 #include "HTMLImageLoader.h"
38 #include "HTMLNames.h"
39 #include "Page.h"
40 #include "RenderImage.h"
41 #include "RenderVideo.h"
42
43 namespace WebCore {
44
45 using namespace HTMLNames;
46
HTMLVideoElement(const QualifiedName & tagName,Document * document)47 inline HTMLVideoElement::HTMLVideoElement(const QualifiedName& tagName, Document* document)
48 : HTMLMediaElement(tagName, document)
49 {
50 ASSERT(hasTagName(videoTag));
51 }
52
create(const QualifiedName & tagName,Document * document)53 PassRefPtr<HTMLVideoElement> HTMLVideoElement::create(const QualifiedName& tagName, Document* document)
54 {
55 return adoptRef(new HTMLVideoElement(tagName, document));
56 }
57
rendererIsNeeded(RenderStyle * style)58 bool HTMLVideoElement::rendererIsNeeded(RenderStyle* style)
59 {
60 return HTMLElement::rendererIsNeeded(style);
61 }
62
63 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
createRenderer(RenderArena * arena,RenderStyle *)64 RenderObject* HTMLVideoElement::createRenderer(RenderArena* arena, RenderStyle*)
65 {
66 return new (arena) RenderVideo(this);
67 }
68 #endif
69
attach()70 void HTMLVideoElement::attach()
71 {
72 HTMLMediaElement::attach();
73
74 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
75 updateDisplayState();
76 if (shouldDisplayPosterImage()) {
77 if (!m_imageLoader)
78 m_imageLoader = adoptPtr(new HTMLImageLoader(this));
79 m_imageLoader->updateFromElement();
80 if (renderer())
81 toRenderImage(renderer())->imageResource()->setCachedImage(m_imageLoader->image());
82 }
83 #endif
84 }
85
detach()86 void HTMLVideoElement::detach()
87 {
88 HTMLMediaElement::detach();
89
90 if (!shouldDisplayPosterImage() && m_imageLoader)
91 m_imageLoader.clear();
92 }
93
parseMappedAttribute(Attribute * attr)94 void HTMLVideoElement::parseMappedAttribute(Attribute* attr)
95 {
96 const QualifiedName& attrName = attr->name();
97
98 if (attrName == posterAttr) {
99 // Force a poster recalc by setting m_displayMode to Unknown directly before calling updateDisplayState.
100 HTMLMediaElement::setDisplayMode(Unknown);
101 updateDisplayState();
102 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
103 if (shouldDisplayPosterImage()) {
104 if (!m_imageLoader)
105 m_imageLoader = adoptPtr(new HTMLImageLoader(this));
106 m_imageLoader->updateFromElementIgnoringPreviousError();
107 } else {
108 if (m_imageLoader)
109 m_imageLoader.clear();
110 if (renderer())
111 toRenderImage(renderer())->imageResource()->setCachedImage(0);
112 }
113 #endif
114 } else if (attrName == widthAttr)
115 addCSSLength(attr, CSSPropertyWidth, attr->value());
116 else if (attrName == heightAttr)
117 addCSSLength(attr, CSSPropertyHeight, attr->value());
118 else
119 HTMLMediaElement::parseMappedAttribute(attr);
120 }
121
supportsFullscreen() const122 bool HTMLVideoElement::supportsFullscreen() const
123 {
124 Page* page = document() ? document()->page() : 0;
125 if (!page)
126 return false;
127
128 if (!player() || !player()->supportsFullscreen() || !player()->hasVideo())
129 return false;
130
131 // Check with the platform client.
132 #if ENABLE(FULLSCREEN_API)
133 if (page->chrome()->client()->supportsFullScreenForElement(this, false))
134 return true;
135 #endif
136
137 return page->chrome()->client()->supportsFullscreenForNode(this);
138 }
139
videoWidth() const140 unsigned HTMLVideoElement::videoWidth() const
141 {
142 if (!player())
143 return 0;
144 return player()->naturalSize().width();
145 }
146
videoHeight() const147 unsigned HTMLVideoElement::videoHeight() const
148 {
149 if (!player())
150 return 0;
151 return player()->naturalSize().height();
152 }
153
width() const154 unsigned HTMLVideoElement::width() const
155 {
156 bool ok;
157 unsigned w = getAttribute(widthAttr).string().toUInt(&ok);
158 return ok ? w : 0;
159 }
160
height() const161 unsigned HTMLVideoElement::height() const
162 {
163 bool ok;
164 unsigned h = getAttribute(heightAttr).string().toUInt(&ok);
165 return ok ? h : 0;
166 }
167
isURLAttribute(Attribute * attribute) const168 bool HTMLVideoElement::isURLAttribute(Attribute* attribute) const
169 {
170 return HTMLMediaElement::isURLAttribute(attribute)
171 || attribute->name() == posterAttr;
172 }
173
imageSourceAttributeName() const174 const QualifiedName& HTMLVideoElement::imageSourceAttributeName() const
175 {
176 return posterAttr;
177 }
178
setDisplayMode(DisplayMode mode)179 void HTMLVideoElement::setDisplayMode(DisplayMode mode)
180 {
181 DisplayMode oldMode = displayMode();
182 KURL poster = getNonEmptyURLAttribute(posterAttr);
183
184 if (!poster.isEmpty()) {
185 // We have a poster path, but only show it until the user triggers display by playing or seeking and the
186 // media engine has something to display.
187 if (mode == Video) {
188 if (oldMode != Video && player())
189 player()->prepareForRendering();
190 if (!hasAvailableVideoFrame())
191 mode = PosterWaitingForVideo;
192 }
193 } else if (oldMode != Video && player())
194 player()->prepareForRendering();
195
196 HTMLMediaElement::setDisplayMode(mode);
197
198 if (player() && player()->canLoadPoster())
199 player()->setPoster(poster);
200
201 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
202 if (renderer() && displayMode() != oldMode)
203 renderer()->updateFromElement();
204 #endif
205 }
206
updateDisplayState()207 void HTMLVideoElement::updateDisplayState()
208 {
209 if (getNonEmptyURLAttribute(posterAttr).isEmpty())
210 setDisplayMode(Video);
211 else if (displayMode() < Poster)
212 setDisplayMode(Poster);
213 }
214
paintCurrentFrameInContext(GraphicsContext * context,const IntRect & destRect)215 void HTMLVideoElement::paintCurrentFrameInContext(GraphicsContext* context, const IntRect& destRect)
216 {
217 MediaPlayer* player = HTMLMediaElement::player();
218 if (!player)
219 return;
220
221 player->setVisible(true); // Make player visible or it won't draw.
222 player->paintCurrentFrameInContext(context, destRect);
223 }
224
hasAvailableVideoFrame() const225 bool HTMLVideoElement::hasAvailableVideoFrame() const
226 {
227 if (!player())
228 return false;
229
230 return player()->hasAvailableVideoFrame();
231 }
232
webkitEnterFullscreen(bool isUserGesture,ExceptionCode & ec)233 void HTMLVideoElement::webkitEnterFullscreen(bool isUserGesture, ExceptionCode& ec)
234 {
235 if (isFullscreen())
236 return;
237
238 // Generate an exception if this isn't called in response to a user gesture, or if the
239 // element does not support fullscreen.
240 if ((requireUserGestureForFullScreen() && !isUserGesture) || !supportsFullscreen()) {
241 ec = INVALID_STATE_ERR;
242 return;
243 }
244
245 enterFullscreen();
246 }
247
webkitExitFullscreen()248 void HTMLVideoElement::webkitExitFullscreen()
249 {
250 if (isFullscreen())
251 exitFullscreen();
252 }
253
webkitSupportsFullscreen()254 bool HTMLVideoElement::webkitSupportsFullscreen()
255 {
256 return supportsFullscreen();
257 }
258
webkitDisplayingFullscreen()259 bool HTMLVideoElement::webkitDisplayingFullscreen()
260 {
261 return isFullscreen();
262 }
263
willMoveToNewOwnerDocument()264 void HTMLVideoElement::willMoveToNewOwnerDocument()
265 {
266 if (m_imageLoader)
267 m_imageLoader->elementWillMoveToNewOwnerDocument();
268 HTMLMediaElement::willMoveToNewOwnerDocument();
269 }
270
271 #if ENABLE(MEDIA_STATISTICS)
webkitDecodedFrameCount() const272 unsigned HTMLVideoElement::webkitDecodedFrameCount() const
273 {
274 if (!player())
275 return 0;
276
277 return player()->decodedFrameCount();
278 }
279
webkitDroppedFrameCount() const280 unsigned HTMLVideoElement::webkitDroppedFrameCount() const
281 {
282 if (!player())
283 return 0;
284
285 return player()->droppedFrameCount();
286 }
287 #endif
288
289 }
290
291 #endif
292