code.vuplus.com Git - vuplus_webkit/blob - Source/WebCore/rendering/RenderEmbeddedObject.cpp

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
   4  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
   5  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #include "config.h"
  25 #include "RenderEmbeddedObject.h"
  26
  27 #include "Chrome.h"
  28 #include "ChromeClient.h"
  29 #include "CSSValueKeywords.h"
  30 #include "Font.h"
  31 #include "FontSelector.h"
  32 #include "Frame.h"
  33 #include "FrameLoaderClient.h"
  34 #include "GraphicsContext.h"
  35 #include "HTMLEmbedElement.h"
  36 #include "HTMLIFrameElement.h"
  37 #include "HTMLNames.h"
  38 #include "HTMLObjectElement.h"
  39 #include "HTMLParamElement.h"
  40 #include "LocalizedStrings.h"
  41 #include "MIMETypeRegistry.h"
  42 #include "MouseEvent.h"
  43 #include "Page.h"
  44 #include "PaintInfo.h"
  45 #include "Path.h"
  46 #include "PluginViewBase.h"
  47 #include "RenderTheme.h"
  48 #include "RenderView.h"
  49 #include "RenderWidgetProtector.h"
  50 #include "Settings.h"
  51 #include "Text.h"
  52 #include "TextRun.h"
  53
  54 #if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
  55 #include "HTMLVideoElement.h"
  56 #endif
  57
  58 namespace WebCore {
  59
  60 using namespace HTMLNames;
  61
  62 static const float replacementTextRoundedRectHeight = 18;
  63 static const float replacementTextRoundedRectLeftRightTextMargin = 6;
  64 static const float replacementTextRoundedRectOpacity = 0.20f;
  65 static const float replacementTextPressedRoundedRectOpacity = 0.65f;
  66 static const float replacementTextRoundedRectRadius = 5;
  67 static const float replacementTextTextOpacity = 0.55f;
  68 static const float replacementTextPressedTextOpacity = 0.65f;
  69
  70 static const Color& replacementTextRoundedRectPressedColor()
  71 {
  72     static const Color lightGray(205, 205, 205);
  73     return lightGray;
  74 }
  75
  76 RenderEmbeddedObject::RenderEmbeddedObject(Element* element)
  77     : RenderPart(element)
  78     , m_hasFallbackContent(false)
  79     , m_showsMissingPluginIndicator(false)
  80     , m_missingPluginIndicatorIsPressed(false)
  81     , m_mouseDownWasInMissingPluginIndicator(false)
  82 {
  83     view()->frameView()->setIsVisuallyNonEmpty();
  84 #if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
  85     if (element->hasTagName(videoTag) || element->hasTagName(audioTag))
  86         setHasIntrinsicSize();
  87 #endif
  88 }
  89
  90 RenderEmbeddedObject::~RenderEmbeddedObject()
  91 {
  92     if (frameView())
  93         frameView()->removeWidgetToUpdate(this);
  94 }
  95
  96 #if USE(ACCELERATED_COMPOSITING)
  97 bool RenderEmbeddedObject::requiresLayer() const
  98 {
  99     if (RenderPart::requiresLayer())
 100         return true;
 101
 102     return allowsAcceleratedCompositing();
 103 }
 104
 105 bool RenderEmbeddedObject::allowsAcceleratedCompositing() const
 106 {
 107     return widget() && widget()->isPluginViewBase() && static_cast<PluginViewBase*>(widget())->platformLayer();
 108 }
 109 #endif
 110
 111 void RenderEmbeddedObject::setShowsMissingPluginIndicator()
 112 {
 113     ASSERT(m_replacementText.isEmpty());
 114     m_replacementText = missingPluginText();
 115     m_showsMissingPluginIndicator = true;
 116 }
 117
 118 void RenderEmbeddedObject::setShowsCrashedPluginIndicator()
 119 {
 120     ASSERT(m_replacementText.isEmpty());
 121     m_replacementText = crashedPluginText();
 122 }
 123
 124 bool RenderEmbeddedObject::pluginCrashedOrWasMissing() const
 125 {
 126     return !m_replacementText.isNull();
 127 }
 128
 129 void RenderEmbeddedObject::setMissingPluginIndicatorIsPressed(bool pressed)
 130 {
 131     if (m_missingPluginIndicatorIsPressed == pressed)
 132         return;
 133
 134     m_missingPluginIndicatorIsPressed = pressed;
 135     repaint();
 136 }
 137
 138 void RenderEmbeddedObject::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 139 {
 140     if (pluginCrashedOrWasMissing()) {
 141         RenderReplaced::paint(paintInfo, paintOffset);
 142         return;
 143     }
 144
 145     RenderPart::paint(paintInfo, paintOffset);
 146 }
 147
 148 void RenderEmbeddedObject::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 149 {
 150     if (!pluginCrashedOrWasMissing())
 151         return;
 152
 153     if (paintInfo.phase == PaintPhaseSelection)
 154         return;
 155
 156     GraphicsContext* context = paintInfo.context;
 157     if (context->paintingDisabled())
 158         return;
 159
 160     FloatRect contentRect;
 161     Path path;
 162     FloatRect replacementTextRect;
 163     Font font;
 164     TextRun run("");
 165     float textWidth;
 166     if (!getReplacementTextGeometry(paintOffset, contentRect, path, replacementTextRect, font, run, textWidth))
 167         return;
 168
 169     GraphicsContextStateSaver stateSaver(*context);
 170     context->clip(contentRect);
 171     context->setAlpha(m_missingPluginIndicatorIsPressed ? replacementTextPressedRoundedRectOpacity : replacementTextRoundedRectOpacity);
 172     context->setFillColor(m_missingPluginIndicatorIsPressed ? replacementTextRoundedRectPressedColor() : Color::white, style()->colorSpace());
 173     context->fillPath(path);
 174
 175     const FontMetrics& fontMetrics = font.fontMetrics();
 176     float labelX = roundf(replacementTextRect.location().x() + (replacementTextRect.size().width() - textWidth) / 2);
 177     float labelY = roundf(replacementTextRect.location().y() + (replacementTextRect.size().height() - fontMetrics.height()) / 2 + fontMetrics.ascent());
 178     context->setAlpha(m_missingPluginIndicatorIsPressed ? replacementTextPressedTextOpacity : replacementTextTextOpacity);
 179     context->setFillColor(Color::black, style()->colorSpace());
 180     context->drawBidiText(font, run, FloatPoint(labelX, labelY));
 181 }
 182
 183 bool RenderEmbeddedObject::getReplacementTextGeometry(const LayoutPoint& accumulatedOffset, FloatRect& contentRect, Path& path, FloatRect& replacementTextRect, Font& font, TextRun& run, float& textWidth)
 184 {
 185     contentRect = contentBoxRect();
 186     contentRect.moveBy(accumulatedOffset);
 187
 188     FontDescription fontDescription;
 189     RenderTheme::defaultTheme()->systemFont(CSSValueWebkitSmallControl, fontDescription);
 190     fontDescription.setWeight(FontWeightBold);
 191     Settings* settings = document()->settings();
 192     ASSERT(settings);
 193     if (!settings)
 194         return false;
 195     fontDescription.setRenderingMode(settings->fontRenderingMode());
 196     fontDescription.setComputedSize(fontDescription.specifiedSize());
 197     font = Font(fontDescription, 0, 0);
 198     font.update(0);
 199
 200     run = TextRun(m_replacementText);
 201     textWidth = font.width(run);
 202
 203     replacementTextRect.setSize(FloatSize(textWidth + replacementTextRoundedRectLeftRightTextMargin * 2, replacementTextRoundedRectHeight));
 204     float x = (contentRect.size().width() / 2 - replacementTextRect.size().width() / 2) + contentRect.location().x();
 205     float y = (contentRect.size().height() / 2 - replacementTextRect.size().height() / 2) + contentRect.location().y();
 206     replacementTextRect.setLocation(FloatPoint(x, y));
 207
 208     path.addRoundedRect(replacementTextRect, FloatSize(replacementTextRoundedRectRadius, replacementTextRoundedRectRadius));
 209
 210     return true;
 211 }
 212
 213 void RenderEmbeddedObject::layout()
 214 {
 215     ASSERT(needsLayout());
 216
 217     computeLogicalWidth();
 218     computeLogicalHeight();
 219
 220     RenderPart::layout();
 221
 222     m_overflow.clear();
 223     addBoxShadowAndBorderOverflow();
 224
 225     updateLayerTransform();
 226
 227     if (!widget() && frameView())
 228         frameView()->addWidgetToUpdate(this);
 229
 230     setNeedsLayout(false);
 231 }
 232
 233 void RenderEmbeddedObject::viewCleared()
 234 {
 235     // This is required for <object> elements whose contents are rendered by WebCore (e.g. src="foo.html").
 236     if (node() && widget() && widget()->isFrameView()) {
 237         FrameView* view = static_cast<FrameView*>(widget());
 238         int marginWidth = -1;
 239         int marginHeight = -1;
 240         if (node()->hasTagName(iframeTag)) {
 241             HTMLIFrameElement* frame = static_cast<HTMLIFrameElement*>(node());
 242             marginWidth = frame->marginWidth();
 243             marginHeight = frame->marginHeight();
 244         }
 245         if (marginWidth != -1)
 246             view->setMarginWidth(marginWidth);
 247         if (marginHeight != -1)
 248             view->setMarginHeight(marginHeight);
 249     }
 250 }
 251
 252 bool RenderEmbeddedObject::isInMissingPluginIndicator(MouseEvent* event)
 253 {
 254     FloatRect contentRect;
 255     Path path;
 256     FloatRect replacementTextRect;
 257     Font font;
 258     TextRun run("");
 259     float textWidth;
 260     if (!getReplacementTextGeometry(IntPoint(), contentRect, path, replacementTextRect, font, run, textWidth))
 261         return false;
 262
 263     return path.contains(absoluteToLocal(event->absoluteLocation(), false, true));
 264 }
 265
 266 void RenderEmbeddedObject::handleMissingPluginIndicatorEvent(Event* event)
 267 {
 268     if (Page* page = document()->page()) {
 269         if (!page->chrome()->client()->shouldMissingPluginMessageBeButton())
 270             return;
 271     }
 272
 273     if (!event->isMouseEvent())
 274         return;
 275
 276     MouseEvent* mouseEvent = static_cast<MouseEvent*>(event);
 277     HTMLPlugInElement* element = static_cast<HTMLPlugInElement*>(node());
 278     if (event->type() == eventNames().mousedownEvent && static_cast<MouseEvent*>(event)->button() == LeftButton) {
 279         m_mouseDownWasInMissingPluginIndicator = isInMissingPluginIndicator(mouseEvent);
 280         if (m_mouseDownWasInMissingPluginIndicator) {
 281             if (Frame* frame = document()->frame()) {
 282                 frame->eventHandler()->setCapturingMouseEventsNode(element);
 283                 element->setIsCapturingMouseEvents(true);
 284             }
 285             setMissingPluginIndicatorIsPressed(true);
 286         }
 287         event->setDefaultHandled();
 288     }
 289     if (event->type() == eventNames().mouseupEvent && static_cast<MouseEvent*>(event)->button() == LeftButton) {
 290         if (m_missingPluginIndicatorIsPressed) {
 291             if (Frame* frame = document()->frame()) {
 292                 frame->eventHandler()->setCapturingMouseEventsNode(0);
 293                 element->setIsCapturingMouseEvents(false);
 294             }
 295             setMissingPluginIndicatorIsPressed(false);
 296         }
 297         if (m_mouseDownWasInMissingPluginIndicator && isInMissingPluginIndicator(mouseEvent)) {
 298             if (Page* page = document()->page())
 299                 page->chrome()->client()->missingPluginButtonClicked(element);
 300         }
 301         m_mouseDownWasInMissingPluginIndicator = false;
 302         event->setDefaultHandled();
 303     }
 304     if (event->type() == eventNames().mousemoveEvent) {
 305         setMissingPluginIndicatorIsPressed(m_mouseDownWasInMissingPluginIndicator && isInMissingPluginIndicator(mouseEvent));
 306         event->setDefaultHandled();
 307     }
 308 }
 309
 310 }