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| 1 /* | |
| 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | |
| 3 * Copyright (C) 2000 Dirk Mueller (mueller@kde.org) | |
| 4 * Copyright (C) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved. | |
| 5 * Copyright (C) 2013 Google 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 "core/rendering/RenderWidget.h" | |
| 26 | |
| 27 #include "core/accessibility/AXObjectCache.h" | |
| 28 #include "core/frame/LocalFrame.h" | |
| 29 #include "core/html/HTMLFrameOwnerElement.h" | |
| 30 #include "core/html/HTMLPlugInElement.h" | |
| 31 #include "core/paint/BoxPainter.h" | |
| 32 #include "core/rendering/GraphicsContextAnnotator.h" | |
| 33 #include "core/rendering/HitTestResult.h" | |
| 34 #include "core/rendering/RenderLayer.h" | |
| 35 #include "core/rendering/RenderView.h" | |
| 36 #include "core/rendering/compositing/CompositedLayerMapping.h" | |
| 37 #include "core/rendering/compositing/RenderLayerCompositor.h" | |
| 38 #include "wtf/HashMap.h" | |
| 39 | |
| 40 namespace blink { | |
| 41 | |
| 42 RenderWidget::RenderWidget(Element* element) | |
| 43 : RenderReplaced(element) | |
| 44 #if !ENABLE(OILPAN) | |
| 45 // Reference counting is used to prevent the widget from being | |
| 46 // destroyed while inside the Widget code, which might not be | |
| 47 // able to handle that. | |
| 48 , m_refCount(1) | |
| 49 #endif | |
| 50 { | |
| 51 ASSERT(element); | |
| 52 frameView()->addWidget(this); | |
| 53 } | |
| 54 | |
| 55 void RenderWidget::willBeDestroyed() | |
| 56 { | |
| 57 frameView()->removeWidget(this); | |
| 58 | |
| 59 if (AXObjectCache* cache = document().existingAXObjectCache()) { | |
| 60 cache->childrenChanged(this->parent()); | |
| 61 cache->remove(this); | |
| 62 } | |
| 63 | |
| 64 Element* element = toElement(node()); | |
| 65 if (element && element->isFrameOwnerElement()) | |
| 66 toHTMLFrameOwnerElement(element)->setWidget(nullptr); | |
| 67 | |
| 68 RenderReplaced::willBeDestroyed(); | |
| 69 } | |
| 70 | |
| 71 void RenderWidget::destroy() | |
| 72 { | |
| 73 #if ENABLE(ASSERT) && ENABLE(OILPAN) | |
| 74 ASSERT(!m_didCallDestroy); | |
| 75 m_didCallDestroy = true; | |
| 76 #endif | |
| 77 willBeDestroyed(); | |
| 78 clearNode(); | |
| 79 #if ENABLE(OILPAN) | |
| 80 // In Oilpan, postDestroy doesn't delete |this|. So calling it here is safe | |
| 81 // though |this| will be referred in FrameView. | |
| 82 postDestroy(); | |
| 83 #else | |
| 84 deref(); | |
| 85 #endif | |
| 86 } | |
| 87 | |
| 88 RenderWidget::~RenderWidget() | |
| 89 { | |
| 90 #if !ENABLE(OILPAN) | |
| 91 ASSERT(m_refCount <= 0); | |
| 92 #endif | |
| 93 } | |
| 94 | |
| 95 Widget* RenderWidget::widget() const | |
| 96 { | |
| 97 // Plugin widgets are stored in their DOM node. This includes HTMLAppletElem
ent. | |
| 98 Element* element = toElement(node()); | |
| 99 | |
| 100 if (element && element->isFrameOwnerElement()) | |
| 101 return toHTMLFrameOwnerElement(element)->ownedWidget(); | |
| 102 | |
| 103 return 0; | |
| 104 } | |
| 105 | |
| 106 // Widgets are always placed on integer boundaries, so rounding the size is actu
ally | |
| 107 // the desired behavior. This function is here because it's otherwise seldom wha
t we | |
| 108 // want to do with a LayoutRect. | |
| 109 static inline IntRect roundedIntRect(const LayoutRect& rect) | |
| 110 { | |
| 111 return IntRect(roundedIntPoint(rect.location()), roundedIntSize(rect.size())
); | |
| 112 } | |
| 113 | |
| 114 bool RenderWidget::setWidgetGeometry(const LayoutRect& frame) | |
| 115 { | |
| 116 if (!node()) | |
| 117 return false; | |
| 118 | |
| 119 Widget* widget = this->widget(); | |
| 120 ASSERT(widget); | |
| 121 | |
| 122 IntRect newFrame = roundedIntRect(frame); | |
| 123 | |
| 124 if (widget->frameRect() == newFrame) | |
| 125 return false; | |
| 126 | |
| 127 RefPtrWillBeRawPtr<RenderWidget> protector(this); | |
| 128 RefPtrWillBeRawPtr<Node> protectedNode(node()); | |
| 129 widget->setFrameRect(newFrame); | |
| 130 return widget->frameRect().size() != newFrame.size(); | |
| 131 } | |
| 132 | |
| 133 bool RenderWidget::updateWidgetGeometry() | |
| 134 { | |
| 135 Widget* widget = this->widget(); | |
| 136 ASSERT(widget); | |
| 137 | |
| 138 LayoutRect contentBox = contentBoxRect(); | |
| 139 LayoutRect absoluteContentBox(localToAbsoluteQuad(FloatQuad(contentBox)).bou
ndingBox()); | |
| 140 if (widget->isFrameView()) { | |
| 141 contentBox.setLocation(absoluteContentBox.location()); | |
| 142 return setWidgetGeometry(contentBox); | |
| 143 } | |
| 144 | |
| 145 return setWidgetGeometry(absoluteContentBox); | |
| 146 } | |
| 147 | |
| 148 void RenderWidget::layout() | |
| 149 { | |
| 150 ASSERT(needsLayout()); | |
| 151 | |
| 152 clearNeedsLayout(); | |
| 153 } | |
| 154 | |
| 155 void RenderWidget::styleDidChange(StyleDifference diff, const RenderStyle* oldSt
yle) | |
| 156 { | |
| 157 RenderReplaced::styleDidChange(diff, oldStyle); | |
| 158 Widget* widget = this->widget(); | |
| 159 | |
| 160 if (widget) { | |
| 161 if (style()->visibility() != VISIBLE) { | |
| 162 widget->hide(); | |
| 163 } else { | |
| 164 widget->show(); | |
| 165 } | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 void RenderWidget::paintContents(PaintInfo& paintInfo, const LayoutPoint& paintO
ffset) | |
| 170 { | |
| 171 LayoutPoint adjustedPaintOffset = paintOffset + location(); | |
| 172 | |
| 173 Widget* widget = this->widget(); | |
| 174 RELEASE_ASSERT(widget); | |
| 175 | |
| 176 // Tell the widget to paint now. This is the only time the widget is allowed | |
| 177 // to paint itself. That way it will composite properly with z-indexed layer
s. | |
| 178 IntPoint widgetLocation = widget->frameRect().location(); | |
| 179 IntPoint paintLocation(roundToInt(adjustedPaintOffset.x() + borderLeft() + p
addingLeft()), | |
| 180 roundToInt(adjustedPaintOffset.y() + borderTop() + paddingTop())); | |
| 181 IntRect paintRect = paintInfo.rect; | |
| 182 | |
| 183 IntSize widgetPaintOffset = paintLocation - widgetLocation; | |
| 184 // When painting widgets into compositing layers, tx and ty are relative to
the enclosing compositing layer, | |
| 185 // not the root. In this case, shift the CTM and adjust the paintRect to be
root-relative to fix plug-in drawing. | |
| 186 if (!widgetPaintOffset.isZero()) { | |
| 187 paintInfo.context->translate(widgetPaintOffset.width(), widgetPaintOffse
t.height()); | |
| 188 paintRect.move(-widgetPaintOffset); | |
| 189 } | |
| 190 widget->paint(paintInfo.context, paintRect); | |
| 191 | |
| 192 if (!widgetPaintOffset.isZero()) | |
| 193 paintInfo.context->translate(-widgetPaintOffset.width(), -widgetPaintOff
set.height()); | |
| 194 } | |
| 195 | |
| 196 void RenderWidget::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) | |
| 197 { | |
| 198 ANNOTATE_GRAPHICS_CONTEXT(paintInfo, this); | |
| 199 | |
| 200 if (!shouldPaint(paintInfo, paintOffset)) | |
| 201 return; | |
| 202 | |
| 203 LayoutPoint adjustedPaintOffset = paintOffset + location(); | |
| 204 | |
| 205 if (hasBoxDecorationBackground() && (paintInfo.phase == PaintPhaseForeground
|| paintInfo.phase == PaintPhaseSelection)) | |
| 206 paintBoxDecorationBackground(paintInfo, adjustedPaintOffset); | |
| 207 | |
| 208 if (paintInfo.phase == PaintPhaseMask) { | |
| 209 paintMask(paintInfo, adjustedPaintOffset); | |
| 210 return; | |
| 211 } | |
| 212 | |
| 213 if ((paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSe
lfOutline) && style()->hasOutline()) | |
| 214 paintOutline(paintInfo, LayoutRect(adjustedPaintOffset, size())); | |
| 215 | |
| 216 if (paintInfo.phase != PaintPhaseForeground) | |
| 217 return; | |
| 218 | |
| 219 if (style()->hasBorderRadius()) { | |
| 220 LayoutRect borderRect = LayoutRect(adjustedPaintOffset, size()); | |
| 221 | |
| 222 if (borderRect.isEmpty()) | |
| 223 return; | |
| 224 | |
| 225 // Push a clip if we have a border radius, since we want to round the fo
reground content that gets painted. | |
| 226 paintInfo.context->save(); | |
| 227 RoundedRect roundedInnerRect = style()->getRoundedInnerBorderFor(borderR
ect, | |
| 228 paddingTop() + borderTop(), paddingBottom() + borderBottom(), paddin
gLeft() + borderLeft(), paddingRight() + borderRight(), true, true); | |
| 229 BoxPainter::clipRoundedInnerRect(paintInfo.context, borderRect, roundedI
nnerRect); | |
| 230 } | |
| 231 | |
| 232 Widget* widget = this->widget(); | |
| 233 if (widget) | |
| 234 paintContents(paintInfo, paintOffset); | |
| 235 | |
| 236 if (style()->hasBorderRadius()) | |
| 237 paintInfo.context->restore(); | |
| 238 | |
| 239 // Paint a partially transparent wash over selected widgets. | |
| 240 if (isSelected() && !document().printing()) { | |
| 241 LayoutRect rect = localSelectionRect(); | |
| 242 rect.moveBy(adjustedPaintOffset); | |
| 243 paintInfo.context->fillRect(pixelSnappedIntRect(rect), selectionBackgrou
ndColor()); | |
| 244 } | |
| 245 | |
| 246 if (canResize()) | |
| 247 layer()->scrollableArea()->paintResizer(paintInfo.context, roundedIntPoi
nt(adjustedPaintOffset), paintInfo.rect); | |
| 248 } | |
| 249 | |
| 250 #if !ENABLE(OILPAN) | |
| 251 void RenderWidget::deref() | |
| 252 { | |
| 253 if (--m_refCount <= 0) | |
| 254 postDestroy(); | |
| 255 } | |
| 256 #endif | |
| 257 | |
| 258 void RenderWidget::updateOnWidgetChange() | |
| 259 { | |
| 260 Widget* widget = this->widget(); | |
| 261 if (!widget) | |
| 262 return; | |
| 263 | |
| 264 if (!style()) | |
| 265 return; | |
| 266 | |
| 267 if (!needsLayout()) | |
| 268 updateWidgetGeometry(); | |
| 269 | |
| 270 if (style()->visibility() != VISIBLE) { | |
| 271 widget->hide(); | |
| 272 } else { | |
| 273 widget->show(); | |
| 274 // FIXME: Why do we issue a full paint invalidation in this case, but no
t the other? | |
| 275 setShouldDoFullPaintInvalidation(); | |
| 276 } | |
| 277 } | |
| 278 | |
| 279 void RenderWidget::updateWidgetPosition() | |
| 280 { | |
| 281 Widget* widget = this->widget(); | |
| 282 if (!widget || !node()) // Check the node in case destroy() has been called. | |
| 283 return; | |
| 284 | |
| 285 bool boundsChanged = updateWidgetGeometry(); | |
| 286 | |
| 287 // if the frame bounds got changed, or if view needs layout (possibly indica
ting | |
| 288 // content size is wrong) we have to do a layout to set the right widget siz
e | |
| 289 if (widget && widget->isFrameView()) { | |
| 290 FrameView* frameView = toFrameView(widget); | |
| 291 // Check the frame's page to make sure that the frame isn't in the proce
ss of being destroyed. | |
| 292 if ((boundsChanged || frameView->needsLayout()) && frameView->frame().pa
ge()) | |
| 293 frameView->layout(); | |
| 294 } | |
| 295 } | |
| 296 | |
| 297 void RenderWidget::widgetPositionsUpdated() | |
| 298 { | |
| 299 Widget* widget = this->widget(); | |
| 300 if (!widget) | |
| 301 return; | |
| 302 widget->widgetPositionsUpdated(); | |
| 303 } | |
| 304 | |
| 305 bool RenderWidget::nodeAtPoint(const HitTestRequest& request, HitTestResult& res
ult, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedO
ffset, HitTestAction action) | |
| 306 { | |
| 307 bool hadResult = result.innerNode(); | |
| 308 bool inside = RenderReplaced::nodeAtPoint(request, result, locationInContain
er, accumulatedOffset, action); | |
| 309 | |
| 310 // Check to see if we are really over the widget itself (and not just in the
border/padding area). | |
| 311 if ((inside || result.isRectBasedTest()) && !hadResult && result.innerNode()
== node()) | |
| 312 result.setIsOverWidget(contentBoxRect().contains(result.localPoint())); | |
| 313 return inside; | |
| 314 } | |
| 315 | |
| 316 CursorDirective RenderWidget::getCursor(const LayoutPoint& point, Cursor& cursor
) const | |
| 317 { | |
| 318 if (widget() && widget()->isPluginView()) { | |
| 319 // A plug-in is responsible for setting the cursor when the pointer is o
ver it. | |
| 320 return DoNotSetCursor; | |
| 321 } | |
| 322 return RenderReplaced::getCursor(point, cursor); | |
| 323 } | |
| 324 | |
| 325 } // namespace blink | |
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Chromium Code Reviews
Issue 625073002:
Merge RenderWidget into single subclass, RenderPart (Closed)
Base URL: svn://svn.chromium.org/blink/trunk