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
replacementTextRoundedRectPressedColor()70 static const Color& replacementTextRoundedRectPressedColor()
71 {
72 static const Color lightGray(205, 205, 205);
73 return lightGray;
74 }
75
RenderEmbeddedObject(Element * element)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
~RenderEmbeddedObject()90 RenderEmbeddedObject::~RenderEmbeddedObject()
91 {
92 if (frameView())
93 frameView()->removeWidgetToUpdate(this);
94 }
95
96 #if USE(ACCELERATED_COMPOSITING)
requiresLayer() const97 bool RenderEmbeddedObject::requiresLayer() const
98 {
99 if (RenderPart::requiresLayer())
100 return true;
101
102 return allowsAcceleratedCompositing();
103 }
104
allowsAcceleratedCompositing() const105 bool RenderEmbeddedObject::allowsAcceleratedCompositing() const
106 {
107 return widget() && widget()->isPluginViewBase() && static_cast<PluginViewBase*>(widget())->platformLayer();
108 }
109 #endif
110
setShowsMissingPluginIndicator()111 void RenderEmbeddedObject::setShowsMissingPluginIndicator()
112 {
113 ASSERT(m_replacementText.isEmpty());
114 m_replacementText = missingPluginText();
115 m_showsMissingPluginIndicator = true;
116 }
117
setShowsCrashedPluginIndicator()118 void RenderEmbeddedObject::setShowsCrashedPluginIndicator()
119 {
120 ASSERT(m_replacementText.isEmpty());
121 m_replacementText = crashedPluginText();
122 }
123
pluginCrashedOrWasMissing() const124 bool RenderEmbeddedObject::pluginCrashedOrWasMissing() const
125 {
126 return !m_replacementText.isNull();
127 }
128
setMissingPluginIndicatorIsPressed(bool pressed)129 void RenderEmbeddedObject::setMissingPluginIndicatorIsPressed(bool pressed)
130 {
131 if (m_missingPluginIndicatorIsPressed == pressed)
132 return;
133
134 m_missingPluginIndicatorIsPressed = pressed;
135 repaint();
136 }
137
paint(PaintInfo & paintInfo,int tx,int ty)138 void 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
paintReplaced(PaintInfo & paintInfo,int tx,int ty)148 void 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
getReplacementTextGeometry(int tx,int ty,FloatRect & contentRect,Path & path,FloatRect & replacementTextRect,Font & font,TextRun & run,float & textWidth)184 bool 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
layout()214 void 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
viewCleared()234 void 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
isInMissingPluginIndicator(MouseEvent * event)253 bool 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
handleMissingPluginIndicatorEvent(Event * event)267 void 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