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 58namespace WebCore { 59 60using namespace HTMLNames; 61 62static const float replacementTextRoundedRectHeight = 18; 63static const float replacementTextRoundedRectLeftRightTextMargin = 6; 64static const float replacementTextRoundedRectOpacity = 0.20f; 65static const float replacementTextPressedRoundedRectOpacity = 0.65f; 66static const float replacementTextRoundedRectRadius = 5; 67static const float replacementTextTextOpacity = 0.55f; 68static const float replacementTextPressedTextOpacity = 0.65f; 69 70static const Color& replacementTextRoundedRectPressedColor() 71{ 72 static const Color lightGray(205, 205, 205); 73 return lightGray; 74} 75 76RenderEmbeddedObject::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 90RenderEmbeddedObject::~RenderEmbeddedObject() 91{ 92 if (frameView()) 93 frameView()->removeWidgetToUpdate(this); 94} 95 96#if USE(ACCELERATED_COMPOSITING) 97bool RenderEmbeddedObject::requiresLayer() const 98{ 99 if (RenderPart::requiresLayer()) 100 return true; 101 102 return allowsAcceleratedCompositing(); 103} 104 105bool RenderEmbeddedObject::allowsAcceleratedCompositing() const 106{ 107 return widget() && widget()->isPluginViewBase() && static_cast<PluginViewBase*>(widget())->platformLayer(); 108} 109#endif 110 111void RenderEmbeddedObject::setShowsMissingPluginIndicator() 112{ 113 ASSERT(m_replacementText.isEmpty()); 114 m_replacementText = missingPluginText(); 115 m_showsMissingPluginIndicator = true; 116} 117 118void RenderEmbeddedObject::setShowsCrashedPluginIndicator() 119{ 120 ASSERT(m_replacementText.isEmpty()); 121 m_replacementText = crashedPluginText(); 122} 123 124bool RenderEmbeddedObject::pluginCrashedOrWasMissing() const 125{ 126 return !m_replacementText.isNull(); 127} 128 129void RenderEmbeddedObject::setMissingPluginIndicatorIsPressed(bool pressed) 130{ 131 if (m_missingPluginIndicatorIsPressed == pressed) 132 return; 133 134 m_missingPluginIndicatorIsPressed = pressed; 135 repaint(); 136} 137 138void RenderEmbeddedObject::paint(PaintInfo& paintInfo, int tx, int ty) 139{ 140 if (pluginCrashedOrWasMissing()) { 141 RenderReplaced::paint(paintInfo, tx, ty); 142 return; 143 } 144 145 RenderPart::paint(paintInfo, tx, ty); 146} 147 148void RenderEmbeddedObject::paintReplaced(PaintInfo& paintInfo, int tx, int ty) 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(tx, ty, contentRect, path, replacementTextRect, font, run, textWidth)) 167 return; 168 169 context->save(); 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 context->restore(); 182} 183 184bool RenderEmbeddedObject::getReplacementTextGeometry(int tx, int ty, FloatRect& contentRect, Path& path, FloatRect& replacementTextRect, Font& font, TextRun& run, float& textWidth) 185{ 186 contentRect = contentBoxRect(); 187 contentRect.move(tx, ty); 188 189 FontDescription fontDescription; 190 RenderTheme::defaultTheme()->systemFont(CSSValueWebkitSmallControl, fontDescription); 191 fontDescription.setWeight(FontWeightBold); 192 Settings* settings = document()->settings(); 193 ASSERT(settings); 194 if (!settings) 195 return false; 196 fontDescription.setRenderingMode(settings->fontRenderingMode()); 197 fontDescription.setComputedSize(fontDescription.specifiedSize()); 198 font = Font(fontDescription, 0, 0); 199 font.update(0); 200 201 run = TextRun(m_replacementText.characters(), m_replacementText.length()); 202 textWidth = font.width(run); 203 204 replacementTextRect.setSize(FloatSize(textWidth + replacementTextRoundedRectLeftRightTextMargin * 2, replacementTextRoundedRectHeight)); 205 float x = (contentRect.size().width() / 2 - replacementTextRect.size().width() / 2) + contentRect.location().x(); 206 float y = (contentRect.size().height() / 2 - replacementTextRect.size().height() / 2) + contentRect.location().y(); 207 replacementTextRect.setLocation(FloatPoint(x, y)); 208 209 path.addRoundedRect(replacementTextRect, FloatSize(replacementTextRoundedRectRadius, replacementTextRoundedRectRadius)); 210 211 return true; 212} 213 214void RenderEmbeddedObject::layout() 215{ 216 ASSERT(needsLayout()); 217 218 computeLogicalWidth(); 219 computeLogicalHeight(); 220 221 RenderPart::layout(); 222 223 m_overflow.clear(); 224 addShadowOverflow(); 225 226 updateLayerTransform(); 227 228 if (!widget() && frameView()) 229 frameView()->addWidgetToUpdate(this); 230 231 setNeedsLayout(false); 232} 233 234void RenderEmbeddedObject::viewCleared() 235{ 236 // This is required for <object> elements whose contents are rendered by WebCore (e.g. src="foo.html"). 237 if (node() && widget() && widget()->isFrameView()) { 238 FrameView* view = static_cast<FrameView*>(widget()); 239 int marginWidth = -1; 240 int marginHeight = -1; 241 if (node()->hasTagName(iframeTag)) { 242 HTMLIFrameElement* frame = static_cast<HTMLIFrameElement*>(node()); 243 marginWidth = frame->marginWidth(); 244 marginHeight = frame->marginHeight(); 245 } 246 if (marginWidth != -1) 247 view->setMarginWidth(marginWidth); 248 if (marginHeight != -1) 249 view->setMarginHeight(marginHeight); 250 } 251} 252 253bool RenderEmbeddedObject::isInMissingPluginIndicator(MouseEvent* event) 254{ 255 FloatRect contentRect; 256 Path path; 257 FloatRect replacementTextRect; 258 Font font; 259 TextRun run(""); 260 float textWidth; 261 if (!getReplacementTextGeometry(0, 0, contentRect, path, replacementTextRect, font, run, textWidth)) 262 return false; 263 264 return path.contains(absoluteToLocal(event->absoluteLocation(), false, true)); 265} 266 267void RenderEmbeddedObject::handleMissingPluginIndicatorEvent(Event* event) 268{ 269 if (Page* page = document()->page()) { 270 if (!page->chrome()->client()->shouldMissingPluginMessageBeButton()) 271 return; 272 } 273 274 if (!event->isMouseEvent()) 275 return; 276 277 MouseEvent* mouseEvent = static_cast<MouseEvent*>(event); 278 HTMLPlugInElement* element = static_cast<HTMLPlugInElement*>(node()); 279 if (event->type() == eventNames().mousedownEvent && static_cast<MouseEvent*>(event)->button() == LeftButton) { 280 m_mouseDownWasInMissingPluginIndicator = isInMissingPluginIndicator(mouseEvent); 281 if (m_mouseDownWasInMissingPluginIndicator) { 282 if (Frame* frame = document()->frame()) { 283 frame->eventHandler()->setCapturingMouseEventsNode(element); 284 element->setIsCapturingMouseEvents(true); 285 } 286 setMissingPluginIndicatorIsPressed(true); 287 } 288 event->setDefaultHandled(); 289 } 290 if (event->type() == eventNames().mouseupEvent && static_cast<MouseEvent*>(event)->button() == LeftButton) { 291 if (m_missingPluginIndicatorIsPressed) { 292 if (Frame* frame = document()->frame()) { 293 frame->eventHandler()->setCapturingMouseEventsNode(0); 294 element->setIsCapturingMouseEvents(false); 295 } 296 setMissingPluginIndicatorIsPressed(false); 297 } 298 if (m_mouseDownWasInMissingPluginIndicator && isInMissingPluginIndicator(mouseEvent)) { 299 if (Page* page = document()->page()) 300 page->chrome()->client()->missingPluginButtonClicked(element); 301 } 302 m_mouseDownWasInMissingPluginIndicator = false; 303 event->setDefaultHandled(); 304 } 305 if (event->type() == eventNames().mousemoveEvent) { 306 setMissingPluginIndicatorIsPressed(m_mouseDownWasInMissingPluginIndicator && isInMissingPluginIndicator(mouseEvent)); 307 event->setDefaultHandled(); 308 } 309} 310 311} 312