WebCore/html/HTMLVideoElement.cpp

   1 /*
   2  * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
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   6  * are met:
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   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
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  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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  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 "ChromeClient.h"
  32 #include "CSSHelper.h"
  33 #include "CSSPropertyNames.h"
  34 #include "Document.h"
  35 #include "HTMLImageLoader.h"
  36 #include "HTMLNames.h"
  37 #include "MappedAttribute.h"
  38 #include "Page.h"
  39 #include "RenderImage.h"
  40 #include "RenderVideo.h"
  41
  42 namespace WebCore {
  43
  44 using namespace HTMLNames;
  45
  46 HTMLVideoElement::HTMLVideoElement(const QualifiedName& tagName, Document* doc)
  47     : HTMLMediaElement(tagName, doc)
  48     , m_shouldShowPosterImage(false)
  49 {
  50     ASSERT(hasTagName(videoTag));
  51 }
  52
  53 bool HTMLVideoElement::rendererIsNeeded(RenderStyle* style)
  54 {
  55     return HTMLElement::rendererIsNeeded(style);
  56 }
  57
  58 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
  59 RenderObject* HTMLVideoElement::createRenderer(RenderArena* arena, RenderStyle*)
  60 {
  61     if (m_shouldShowPosterImage)
  62         return new (arena) RenderImage(this);
  63     return new (arena) RenderVideo(this);
  64 }
  65 #endif
  66
  67 void HTMLVideoElement::attach()
  68 {
  69     HTMLMediaElement::attach();
  70
  71 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
  72     if (m_shouldShowPosterImage) {
  73         if (!m_imageLoader)
  74             m_imageLoader.set(new HTMLImageLoader(this));
  75         m_imageLoader->updateFromElement();
  76         if (renderer() && renderer()->isImage()) {
  77             RenderImage* imageRenderer = toRenderImage(renderer());
  78             imageRenderer->setCachedImage(m_imageLoader->image());
  79         }
  80     }
  81 #endif
  82 }
  83
  84 void HTMLVideoElement::detach()
  85 {
  86     HTMLMediaElement::detach();
  87
  88     if (!m_shouldShowPosterImage)
  89         if (m_imageLoader)
  90             m_imageLoader.clear();
  91 }
  92
  93 void HTMLVideoElement::parseMappedAttribute(MappedAttribute* attr)
  94 {
  95     const QualifiedName& attrName = attr->name();
  96
  97     if (attrName == posterAttr) {
  98         updatePosterImage();
  99         if (m_shouldShowPosterImage) {
 100 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
 101             if (!m_imageLoader)
 102                 m_imageLoader.set(new HTMLImageLoader(this));
 103             m_imageLoader->updateFromElementIgnoringPreviousError();
 104 #else
 105             if (m_player)
 106                 m_player->setPoster(poster());
 107 #endif
 108         }
 109     } else if (attrName == widthAttr)
 110         addCSSLength(attr, CSSPropertyWidth, attr->value());
 111     else if (attrName == heightAttr)
 112         addCSSLength(attr, CSSPropertyHeight, attr->value());
 113     else
 114         HTMLMediaElement::parseMappedAttribute(attr);
 115 }
 116
 117 bool HTMLVideoElement::supportsFullscreen() const
 118 {
 119     Page* page = document() ? document()->page() : 0;
 120     if (!page)
 121         return false;
 122
 123     if (!m_player || !m_player->supportsFullscreen() || !m_player->hasVideo())
 124         return false;
 125
 126     // Check with the platform client.
 127     return page->chrome()->client()->supportsFullscreenForNode(this);
 128 }
 129
 130 unsigned HTMLVideoElement::videoWidth() const
 131 {
 132     if (!m_player)
 133         return 0;
 134     return m_player->naturalSize().width();
 135 }
 136
 137 unsigned HTMLVideoElement::videoHeight() const
 138 {
 139     if (!m_player)
 140         return 0;
 141     return m_player->naturalSize().height();
 142 }
 143
 144 unsigned HTMLVideoElement::width() const
 145 {
 146     bool ok;
 147     unsigned w = getAttribute(widthAttr).string().toUInt(&ok);
 148     return ok ? w : 0;
 149 }
 150
 151 void HTMLVideoElement::setWidth(unsigned value)
 152 {
 153     setAttribute(widthAttr, String::number(value));
 154 }
 155
 156 unsigned HTMLVideoElement::height() const
 157 {
 158     bool ok;
 159     unsigned h = getAttribute(heightAttr).string().toUInt(&ok);
 160     return ok ? h : 0;
 161 }
 162
 163 void HTMLVideoElement::setHeight(unsigned value)
 164 {
 165     setAttribute(heightAttr, String::number(value));
 166 }
 167
 168 KURL HTMLVideoElement::poster() const
 169 {
 170     return document()->completeURL(getAttribute(posterAttr));
 171 }
 172
 173 void HTMLVideoElement::setPoster(const String& value)
 174 {
 175     setAttribute(posterAttr, value);
 176 }
 177
 178 bool HTMLVideoElement::isURLAttribute(Attribute* attr) const
 179 {
 180     return attr->name() == posterAttr;
 181 }
 182
 183 const QualifiedName& HTMLVideoElement::imageSourceAttributeName() const
 184 {
 185     return posterAttr;
 186 }
 187
 188 void HTMLVideoElement::updatePosterImage()
 189 {
 190 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
 191     bool oldShouldShowPosterImage = m_shouldShowPosterImage;
 192 #endif
 193
 194     m_shouldShowPosterImage = !poster().isEmpty() && readyState() < HAVE_CURRENT_DATA;
 195
 196 #if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
 197     if (attached() && oldShouldShowPosterImage != m_shouldShowPosterImage) {
 198         detach();
 199         attach();
 200     }
 201 #endif
 202 }
 203
 204 void HTMLVideoElement::paint(GraphicsContext* context, const IntRect& destRect)
 205 {
 206     // FIXME: We should also be able to paint the poster image.
 207
 208     MediaPlayer* player = HTMLMediaElement::player();
 209     if (!player)
 210         return;
 211
 212     player->setVisible(true); // Make player visible or it won't draw.
 213     player->paint(context, destRect);
 214 }
 215
 216 void HTMLVideoElement::paintCurrentFrameInContext(GraphicsContext* context, const IntRect& destRect)
 217 {
 218     // FIXME: We should also be able to paint the poster image.
 219
 220     MediaPlayer* player = HTMLMediaElement::player();
 221     if (!player)
 222         return;
 223
 224     player->setVisible(true); // Make player visible or it won't draw.
 225     player->paintCurrentFrameInContext(context, destRect);
 226 }
 227
 228 }
 229 #endif