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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, 2007 Apple Inc. All rights reserved. | |
| 5 * Copyright (C) Research In Motion Limited 2011-2012. 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/RenderReplaced.h" | |
| 26 | |
| 27 #include "core/editing/PositionWithAffinity.h" | |
| 28 #include "core/layout/Layer.h" | |
| 29 #include "core/layout/LayoutImage.h" | |
| 30 #include "core/paint/ReplacedPainter.h" | |
| 31 #include "core/rendering/RenderBlock.h" | |
| 32 #include "core/rendering/RenderView.h" | |
| 33 #include "platform/LengthFunctions.h" | |
| 34 | |
| 35 namespace blink { | |
| 36 | |
| 37 const int RenderReplaced::defaultWidth = 300; | |
| 38 const int RenderReplaced::defaultHeight = 150; | |
| 39 | |
| 40 RenderReplaced::RenderReplaced(Element* element) | |
| 41 : RenderBox(element) | |
| 42 , m_intrinsicSize(defaultWidth, defaultHeight) | |
| 43 { | |
| 44 setReplaced(true); | |
| 45 } | |
| 46 | |
| 47 RenderReplaced::RenderReplaced(Element* element, const LayoutSize& intrinsicSize
) | |
| 48 : RenderBox(element) | |
| 49 , m_intrinsicSize(intrinsicSize) | |
| 50 { | |
| 51 setReplaced(true); | |
| 52 } | |
| 53 | |
| 54 RenderReplaced::~RenderReplaced() | |
| 55 { | |
| 56 } | |
| 57 | |
| 58 void RenderReplaced::willBeDestroyed() | |
| 59 { | |
| 60 if (!documentBeingDestroyed() && parent()) | |
| 61 parent()->dirtyLinesFromChangedChild(this); | |
| 62 | |
| 63 RenderBox::willBeDestroyed(); | |
| 64 } | |
| 65 | |
| 66 void RenderReplaced::styleDidChange(StyleDifference diff, const LayoutStyle* old
Style) | |
| 67 { | |
| 68 RenderBox::styleDidChange(diff, oldStyle); | |
| 69 | |
| 70 bool hadStyle = (oldStyle != 0); | |
| 71 float oldZoom = hadStyle ? oldStyle->effectiveZoom() : LayoutStyle::initialZ
oom(); | |
| 72 if (style() && style()->effectiveZoom() != oldZoom) | |
| 73 intrinsicSizeChanged(); | |
| 74 } | |
| 75 | |
| 76 void RenderReplaced::layout() | |
| 77 { | |
| 78 ASSERT(needsLayout()); | |
| 79 | |
| 80 LayoutRect oldContentRect = replacedContentRect(); | |
| 81 | |
| 82 setHeight(minimumReplacedHeight()); | |
| 83 | |
| 84 updateLogicalWidth(); | |
| 85 updateLogicalHeight(); | |
| 86 | |
| 87 m_overflow.clear(); | |
| 88 addVisualEffectOverflow(); | |
| 89 updateLayerTransformAfterLayout(); | |
| 90 invalidateBackgroundObscurationStatus(); | |
| 91 | |
| 92 clearNeedsLayout(); | |
| 93 | |
| 94 if (replacedContentRect() != oldContentRect) | |
| 95 setShouldDoFullPaintInvalidation(); | |
| 96 } | |
| 97 | |
| 98 void RenderReplaced::intrinsicSizeChanged() | |
| 99 { | |
| 100 int scaledWidth = static_cast<int>(defaultWidth * style()->effectiveZoom()); | |
| 101 int scaledHeight = static_cast<int>(defaultHeight * style()->effectiveZoom()
); | |
| 102 m_intrinsicSize = LayoutSize(scaledWidth, scaledHeight); | |
| 103 setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(); | |
| 104 } | |
| 105 | |
| 106 void RenderReplaced::paint(const PaintInfo& paintInfo, const LayoutPoint& paintO
ffset) | |
| 107 { | |
| 108 ReplacedPainter(*this).paint(paintInfo, paintOffset); | |
| 109 } | |
| 110 | |
| 111 bool RenderReplaced::shouldPaint(const PaintInfo& paintInfo, const LayoutPoint&
paintOffset) const | |
| 112 { | |
| 113 if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhase
Outline && paintInfo.phase != PaintPhaseSelfOutline | |
| 114 && paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPha
seMask && paintInfo.phase != PaintPhaseClippingMask) | |
| 115 return false; | |
| 116 | |
| 117 if (!paintInfo.shouldPaintWithinRoot(this)) | |
| 118 return false; | |
| 119 | |
| 120 // if we're invisible or haven't received a layout yet, then just bail. | |
| 121 if (style()->visibility() != VISIBLE) | |
| 122 return false; | |
| 123 | |
| 124 LayoutPoint adjustedPaintOffset = paintOffset + location(); | |
| 125 | |
| 126 // Early exit if the element touches the edges. | |
| 127 LayoutUnit top = adjustedPaintOffset.y() + visualOverflowRect().y(); | |
| 128 LayoutUnit bottom = adjustedPaintOffset.y() + visualOverflowRect().maxY(); | |
| 129 if (isSelected() && inlineBoxWrapper()) { | |
| 130 LayoutUnit selTop = paintOffset.y() + inlineBoxWrapper()->root().selecti
onTop(); | |
| 131 LayoutUnit selBottom = paintOffset.y() + selTop + inlineBoxWrapper()->ro
ot().selectionHeight(); | |
| 132 top = std::min(selTop, top); | |
| 133 bottom = std::max(selBottom, bottom); | |
| 134 } | |
| 135 | |
| 136 if (adjustedPaintOffset.x() + visualOverflowRect().x() >= paintInfo.rect.max
X() || adjustedPaintOffset.x() + visualOverflowRect().maxX() <= paintInfo.rect.x
()) | |
| 137 return false; | |
| 138 | |
| 139 if (top >= paintInfo.rect.maxY() || bottom <= paintInfo.rect.y()) | |
| 140 return false; | |
| 141 | |
| 142 return true; | |
| 143 } | |
| 144 | |
| 145 bool RenderReplaced::hasReplacedLogicalHeight() const | |
| 146 { | |
| 147 if (style()->logicalHeight().isAuto()) | |
| 148 return false; | |
| 149 | |
| 150 if (style()->logicalHeight().isSpecified()) { | |
| 151 if (hasAutoHeightOrContainingBlockWithAutoHeight()) | |
| 152 return false; | |
| 153 return true; | |
| 154 } | |
| 155 | |
| 156 if (style()->logicalHeight().isIntrinsic()) | |
| 157 return true; | |
| 158 | |
| 159 return false; | |
| 160 } | |
| 161 | |
| 162 bool RenderReplaced::needsPreferredWidthsRecalculation() const | |
| 163 { | |
| 164 // If the height is a percentage and the width is auto, then the containingB
locks's height changing can cause | |
| 165 // this node to change it's preferred width because it maintains aspect rati
o. | |
| 166 return hasRelativeLogicalHeight() && style()->logicalWidth().isAuto() && !ha
sAutoHeightOrContainingBlockWithAutoHeight(); | |
| 167 } | |
| 168 | |
| 169 static inline bool rendererHasAspectRatio(const LayoutObject* renderer) | |
| 170 { | |
| 171 ASSERT(renderer); | |
| 172 return renderer->isImage() || renderer->isCanvas() || renderer->isVideo(); | |
| 173 } | |
| 174 | |
| 175 void RenderReplaced::computeAspectRatioInformationForRenderBox(RenderBox* conten
tRenderer, FloatSize& constrainedSize, double& intrinsicRatio) const | |
| 176 { | |
| 177 FloatSize intrinsicSize; | |
| 178 if (contentRenderer) { | |
| 179 contentRenderer->computeIntrinsicRatioInformation(intrinsicSize, intrins
icRatio); | |
| 180 | |
| 181 // Handle zoom & vertical writing modes here, as the embedded document d
oesn't know about them. | |
| 182 intrinsicSize.scale(style()->effectiveZoom()); | |
| 183 if (isLayoutImage()) | |
| 184 intrinsicSize.scale(toLayoutImage(this)->imageDevicePixelRatio()); | |
| 185 | |
| 186 // Update our intrinsic size to match what the content renderer has comp
uted, so that when we | |
| 187 // constrain the size below, the correct intrinsic size will be obtained
for comparison against | |
| 188 // min and max widths. | |
| 189 if (intrinsicRatio && !intrinsicSize.isEmpty()) | |
| 190 m_intrinsicSize = LayoutSize(intrinsicSize); | |
| 191 | |
| 192 if (!isHorizontalWritingMode()) { | |
| 193 if (intrinsicRatio) | |
| 194 intrinsicRatio = 1 / intrinsicRatio; | |
| 195 intrinsicSize = intrinsicSize.transposedSize(); | |
| 196 } | |
| 197 } else { | |
| 198 computeIntrinsicRatioInformation(intrinsicSize, intrinsicRatio); | |
| 199 if (intrinsicRatio && !intrinsicSize.isEmpty()) | |
| 200 m_intrinsicSize = LayoutSize(isHorizontalWritingMode() ? intrinsicSi
ze : intrinsicSize.transposedSize()); | |
| 201 } | |
| 202 | |
| 203 // Now constrain the intrinsic size along each axis according to minimum and
maximum width/heights along the | |
| 204 // opposite axis. So for example a maximum width that shrinks our width will
result in the height we compute here | |
| 205 // having to shrink in order to preserve the aspect ratio. Because we comput
e these values independently along | |
| 206 // each axis, the final returned size may in fact not preserve the aspect ra
tio. | |
| 207 // FIXME: In the long term, it might be better to just return this code more
to the way it used to be before this | |
| 208 // function was added, since all it has done is make the code more unclear. | |
| 209 constrainedSize = intrinsicSize; | |
| 210 if (intrinsicRatio && !intrinsicSize.isEmpty() && style()->logicalWidth().is
Auto() && style()->logicalHeight().isAuto()) { | |
| 211 // We can't multiply or divide by 'intrinsicRatio' here, it breaks tests
, like fast/images/zoomed-img-size.html, which | |
| 212 // can only be fixed once subpixel precision is available for things lik
e intrinsicWidth/Height - which include zoom! | |
| 213 constrainedSize.setWidth(RenderBox::computeReplacedLogicalHeight() * int
rinsicSize.width() / intrinsicSize.height()); | |
| 214 constrainedSize.setHeight(RenderBox::computeReplacedLogicalWidth() * int
rinsicSize.height() / intrinsicSize.width()); | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 LayoutRect RenderReplaced::replacedContentRect(const LayoutSize* overriddenIntri
nsicSize) const | |
| 219 { | |
| 220 LayoutRect contentRect = contentBoxRect(); | |
| 221 ObjectFit objectFit = style()->objectFit(); | |
| 222 | |
| 223 if (objectFit == ObjectFitFill && style()->objectPosition() == LayoutStyle::
initialObjectPosition()) { | |
| 224 return contentRect; | |
| 225 } | |
| 226 | |
| 227 LayoutSize intrinsicSize = overriddenIntrinsicSize ? *overriddenIntrinsicSiz
e : this->intrinsicSize(); | |
| 228 if (!intrinsicSize.width() || !intrinsicSize.height()) | |
| 229 return contentRect; | |
| 230 | |
| 231 LayoutRect finalRect = contentRect; | |
| 232 switch (objectFit) { | |
| 233 case ObjectFitContain: | |
| 234 case ObjectFitScaleDown: | |
| 235 case ObjectFitCover: | |
| 236 finalRect.setSize(finalRect.size().fitToAspectRatio(intrinsicSize, objec
tFit == ObjectFitCover ? AspectRatioFitGrow : AspectRatioFitShrink)); | |
| 237 if (objectFit != ObjectFitScaleDown || finalRect.width() <= intrinsicSiz
e.width()) | |
| 238 break; | |
| 239 // fall through | |
| 240 case ObjectFitNone: | |
| 241 finalRect.setSize(intrinsicSize); | |
| 242 break; | |
| 243 case ObjectFitFill: | |
| 244 break; | |
| 245 default: | |
| 246 ASSERT_NOT_REACHED(); | |
| 247 } | |
| 248 | |
| 249 LayoutUnit xOffset = minimumValueForLength(style()->objectPosition().x(), co
ntentRect.width() - finalRect.width()); | |
| 250 LayoutUnit yOffset = minimumValueForLength(style()->objectPosition().y(), co
ntentRect.height() - finalRect.height()); | |
| 251 finalRect.move(xOffset, yOffset); | |
| 252 | |
| 253 return finalRect; | |
| 254 } | |
| 255 | |
| 256 void RenderReplaced::computeIntrinsicRatioInformation(FloatSize& intrinsicSize,
double& intrinsicRatio) const | |
| 257 { | |
| 258 // If there's an embeddedContentBox() of a remote, referenced document avail
able, this code-path should never be used. | |
| 259 ASSERT(!embeddedContentBox()); | |
| 260 intrinsicSize = FloatSize(intrinsicLogicalWidth().toFloat(), intrinsicLogica
lHeight().toFloat()); | |
| 261 | |
| 262 // Figure out if we need to compute an intrinsic ratio. | |
| 263 if (intrinsicSize.isEmpty() || !rendererHasAspectRatio(this)) | |
| 264 return; | |
| 265 | |
| 266 intrinsicRatio = intrinsicSize.width() / intrinsicSize.height(); | |
| 267 } | |
| 268 | |
| 269 LayoutUnit RenderReplaced::computeReplacedLogicalWidth(ShouldComputePreferred sh
ouldComputePreferred) const | |
| 270 { | |
| 271 if (style()->logicalWidth().isSpecified() || style()->logicalWidth().isIntri
nsic()) | |
| 272 return computeReplacedLogicalWidthRespectingMinMaxWidth(computeReplacedL
ogicalWidthUsing(style()->logicalWidth()), shouldComputePreferred); | |
| 273 | |
| 274 RenderBox* contentRenderer = embeddedContentBox(); | |
| 275 | |
| 276 // 10.3.2 Inline, replaced elements: http://www.w3.org/TR/CSS21/visudet.html
#inline-replaced-width | |
| 277 double intrinsicRatio = 0; | |
| 278 FloatSize constrainedSize; | |
| 279 computeAspectRatioInformationForRenderBox(contentRenderer, constrainedSize,
intrinsicRatio); | |
| 280 | |
| 281 if (style()->logicalWidth().isAuto()) { | |
| 282 bool computedHeightIsAuto = hasAutoHeightOrContainingBlockWithAutoHeight
(); | |
| 283 bool hasIntrinsicWidth = constrainedSize.width() > 0; | |
| 284 | |
| 285 // If 'height' and 'width' both have computed values of 'auto' and the e
lement also has an intrinsic width, then that intrinsic width is the used value
of 'width'. | |
| 286 if (computedHeightIsAuto && hasIntrinsicWidth) | |
| 287 return computeReplacedLogicalWidthRespectingMinMaxWidth(constrainedS
ize.width(), shouldComputePreferred); | |
| 288 | |
| 289 bool hasIntrinsicHeight = constrainedSize.height() > 0; | |
| 290 if (intrinsicRatio) { | |
| 291 // If 'height' and 'width' both have computed values of 'auto' and t
he element has no intrinsic width, but does have an intrinsic height and intrins
ic ratio; | |
| 292 // or if 'width' has a computed value of 'auto', 'height' has some o
ther computed value, and the element does have an intrinsic ratio; then the used
value | |
| 293 // of 'width' is: (used height) * (intrinsic ratio) | |
| 294 if (intrinsicRatio && ((computedHeightIsAuto && !hasIntrinsicWidth &
& hasIntrinsicHeight) || !computedHeightIsAuto)) { | |
| 295 LayoutUnit logicalHeight = computeReplacedLogicalHeight(); | |
| 296 return computeReplacedLogicalWidthRespectingMinMaxWidth(roundToI
nt(round(logicalHeight * intrinsicRatio)), shouldComputePreferred); | |
| 297 } | |
| 298 | |
| 299 // If 'height' and 'width' both have computed values of 'auto' and t
he element has an intrinsic ratio but no intrinsic height or width, then the use
d value of | |
| 300 // 'width' is undefined in CSS 2.1. However, it is suggested that, i
f the containing block's width does not itself depend on the replaced element's
width, then | |
| 301 // the used value of 'width' is calculated from the constraint equat
ion used for block-level, non-replaced elements in normal flow. | |
| 302 if (computedHeightIsAuto && !hasIntrinsicWidth && !hasIntrinsicHeigh
t) { | |
| 303 if (shouldComputePreferred == ComputePreferred) | |
| 304 return 0; | |
| 305 // The aforementioned 'constraint equation' used for block-level
, non-replaced elements in normal flow: | |
| 306 // 'margin-left' + 'border-left-width' + 'padding-left' + 'width
' + 'padding-right' + 'border-right-width' + 'margin-right' = width of containin
g block | |
| 307 LayoutUnit logicalWidth = containingBlock()->availableLogicalWid
th(); | |
| 308 | |
| 309 // This solves above equation for 'width' (== logicalWidth). | |
| 310 LayoutUnit marginStart = minimumValueForLength(style()->marginSt
art(), logicalWidth); | |
| 311 LayoutUnit marginEnd = minimumValueForLength(style()->marginEnd(
), logicalWidth); | |
| 312 logicalWidth = std::max<LayoutUnit>(0, logicalWidth - (marginSta
rt + marginEnd + (size().width() - clientWidth()))); | |
| 313 return computeReplacedLogicalWidthRespectingMinMaxWidth(logicalW
idth, shouldComputePreferred); | |
| 314 } | |
| 315 } | |
| 316 | |
| 317 // Otherwise, if 'width' has a computed value of 'auto', and the element
has an intrinsic width, then that intrinsic width is the used value of 'width'. | |
| 318 if (hasIntrinsicWidth) | |
| 319 return computeReplacedLogicalWidthRespectingMinMaxWidth(constrainedS
ize.width(), shouldComputePreferred); | |
| 320 | |
| 321 // Otherwise, if 'width' has a computed value of 'auto', but none of the
conditions above are met, then the used value of 'width' becomes 300px. If 300p
x is too | |
| 322 // wide to fit the device, UAs should use the width of the largest recta
ngle that has a 2:1 ratio and fits the device instead. | |
| 323 // Note: We fall through and instead return intrinsicLogicalWidth() here
- to preserve existing WebKit behavior, which might or might not be correct, or
desired. | |
| 324 // Changing this to return cDefaultWidth, will affect lots of test resul
ts. Eg. some tests assume that a blank <img> tag (which implies width/height=aut
o) | |
| 325 // has no intrinsic size, which is wrong per CSS 2.1, but matches our be
havior since a long time. | |
| 326 } | |
| 327 | |
| 328 return computeReplacedLogicalWidthRespectingMinMaxWidth(intrinsicLogicalWidt
h(), shouldComputePreferred); | |
| 329 } | |
| 330 | |
| 331 LayoutUnit RenderReplaced::computeReplacedLogicalHeight() const | |
| 332 { | |
| 333 // 10.5 Content height: the 'height' property: http://www.w3.org/TR/CSS21/vi
sudet.html#propdef-height | |
| 334 if (hasReplacedLogicalHeight()) | |
| 335 return computeReplacedLogicalHeightRespectingMinMaxHeight(computeReplace
dLogicalHeightUsing(style()->logicalHeight())); | |
| 336 | |
| 337 RenderBox* contentRenderer = embeddedContentBox(); | |
| 338 | |
| 339 // 10.6.2 Inline, replaced elements: http://www.w3.org/TR/CSS21/visudet.html
#inline-replaced-height | |
| 340 double intrinsicRatio = 0; | |
| 341 FloatSize constrainedSize; | |
| 342 computeAspectRatioInformationForRenderBox(contentRenderer, constrainedSize,
intrinsicRatio); | |
| 343 | |
| 344 bool widthIsAuto = style()->logicalWidth().isAuto(); | |
| 345 bool hasIntrinsicHeight = constrainedSize.height() > 0; | |
| 346 | |
| 347 // If 'height' and 'width' both have computed values of 'auto' and the eleme
nt also has an intrinsic height, then that intrinsic height is the used value of
'height'. | |
| 348 if (widthIsAuto && hasIntrinsicHeight) | |
| 349 return computeReplacedLogicalHeightRespectingMinMaxHeight(constrainedSiz
e.height()); | |
| 350 | |
| 351 // Otherwise, if 'height' has a computed value of 'auto', and the element ha
s an intrinsic ratio then the used value of 'height' is: | |
| 352 // (used width) / (intrinsic ratio) | |
| 353 if (intrinsicRatio) | |
| 354 return computeReplacedLogicalHeightRespectingMinMaxHeight(roundToInt(rou
nd(availableLogicalWidth() / intrinsicRatio))); | |
| 355 | |
| 356 // Otherwise, if 'height' has a computed value of 'auto', and the element ha
s an intrinsic height, then that intrinsic height is the used value of 'height'. | |
| 357 if (hasIntrinsicHeight) | |
| 358 return computeReplacedLogicalHeightRespectingMinMaxHeight(constrainedSiz
e.height()); | |
| 359 | |
| 360 // Otherwise, if 'height' has a computed value of 'auto', but none of the co
nditions above are met, then the used value of 'height' must be set to the heigh
t | |
| 361 // of the largest rectangle that has a 2:1 ratio, has a height not greater t
han 150px, and has a width not greater than the device width. | |
| 362 return computeReplacedLogicalHeightRespectingMinMaxHeight(intrinsicLogicalHe
ight()); | |
| 363 } | |
| 364 | |
| 365 void RenderReplaced::computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth,
LayoutUnit& maxLogicalWidth) const | |
| 366 { | |
| 367 minLogicalWidth = maxLogicalWidth = intrinsicLogicalWidth(); | |
| 368 } | |
| 369 | |
| 370 void RenderReplaced::computePreferredLogicalWidths() | |
| 371 { | |
| 372 ASSERT(preferredLogicalWidthsDirty()); | |
| 373 | |
| 374 // We cannot resolve any percent logical width here as the available logical | |
| 375 // width may not be set on our containing block. | |
| 376 if (style()->logicalWidth().isPercent()) | |
| 377 computeIntrinsicLogicalWidths(m_minPreferredLogicalWidth, m_maxPreferred
LogicalWidth); | |
| 378 else | |
| 379 m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = computeReplace
dLogicalWidth(ComputePreferred); | |
| 380 | |
| 381 const LayoutStyle& styleToUse = styleRef(); | |
| 382 if (styleToUse.logicalWidth().isPercent() || styleToUse.logicalMaxWidth().is
Percent()) | |
| 383 m_minPreferredLogicalWidth = 0; | |
| 384 | |
| 385 if (styleToUse.logicalMinWidth().isFixed() && styleToUse.logicalMinWidth().v
alue() > 0) { | |
| 386 m_maxPreferredLogicalWidth = std::max(m_maxPreferredLogicalWidth, adjust
ContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMinWidth().value())); | |
| 387 m_minPreferredLogicalWidth = std::max(m_minPreferredLogicalWidth, adjust
ContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMinWidth().value())); | |
| 388 } | |
| 389 | |
| 390 if (styleToUse.logicalMaxWidth().isFixed()) { | |
| 391 m_maxPreferredLogicalWidth = std::min(m_maxPreferredLogicalWidth, adjust
ContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMaxWidth().value())); | |
| 392 m_minPreferredLogicalWidth = std::min(m_minPreferredLogicalWidth, adjust
ContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMaxWidth().value())); | |
| 393 } | |
| 394 | |
| 395 LayoutUnit borderAndPadding = borderAndPaddingLogicalWidth(); | |
| 396 m_minPreferredLogicalWidth += borderAndPadding; | |
| 397 m_maxPreferredLogicalWidth += borderAndPadding; | |
| 398 | |
| 399 clearPreferredLogicalWidthsDirty(); | |
| 400 } | |
| 401 | |
| 402 PositionWithAffinity RenderReplaced::positionForPoint(const LayoutPoint& point) | |
| 403 { | |
| 404 // FIXME: This code is buggy if the replaced element is relative positioned. | |
| 405 InlineBox* box = inlineBoxWrapper(); | |
| 406 RootInlineBox* rootBox = box ? &box->root() : 0; | |
| 407 | |
| 408 LayoutUnit top = rootBox ? rootBox->selectionTop() : logicalTop(); | |
| 409 LayoutUnit bottom = rootBox ? rootBox->selectionBottom() : logicalBottom(); | |
| 410 | |
| 411 LayoutUnit blockDirectionPosition = isHorizontalWritingMode() ? point.y() +
location().y() : point.x() + location().x(); | |
| 412 LayoutUnit lineDirectionPosition = isHorizontalWritingMode() ? point.x() + l
ocation().x() : point.y() + location().y(); | |
| 413 | |
| 414 if (blockDirectionPosition < top) | |
| 415 return createPositionWithAffinity(caretMinOffset(), DOWNSTREAM); // coor
dinates are above | |
| 416 | |
| 417 if (blockDirectionPosition >= bottom) | |
| 418 return createPositionWithAffinity(caretMaxOffset(), DOWNSTREAM); // coor
dinates are below | |
| 419 | |
| 420 if (node()) { | |
| 421 if (lineDirectionPosition <= logicalLeft() + (logicalWidth() / 2)) | |
| 422 return createPositionWithAffinity(0, DOWNSTREAM); | |
| 423 return createPositionWithAffinity(1, DOWNSTREAM); | |
| 424 } | |
| 425 | |
| 426 return RenderBox::positionForPoint(point); | |
| 427 } | |
| 428 | |
| 429 LayoutRect RenderReplaced::selectionRectForPaintInvalidation(const LayoutLayerMo
delObject* paintInvalidationContainer) const | |
| 430 { | |
| 431 ASSERT(!needsLayout()); | |
| 432 | |
| 433 if (!isSelected()) | |
| 434 return LayoutRect(); | |
| 435 | |
| 436 LayoutRect rect = localSelectionRect(); | |
| 437 mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, 0); | |
| 438 // FIXME: groupedMapping() leaks the squashing abstraction. | |
| 439 if (paintInvalidationContainer->layer()->groupedMapping()) | |
| 440 Layer::mapRectToPaintBackingCoordinates(paintInvalidationContainer, rect
); | |
| 441 return rect; | |
| 442 } | |
| 443 | |
| 444 LayoutRect RenderReplaced::localSelectionRect(bool checkWhetherSelected) const | |
| 445 { | |
| 446 if (checkWhetherSelected && !isSelected()) | |
| 447 return LayoutRect(); | |
| 448 | |
| 449 if (!inlineBoxWrapper()) | |
| 450 // We're a block-level replaced element. Just return our own dimensions
. | |
| 451 return LayoutRect(LayoutPoint(), size()); | |
| 452 | |
| 453 RootInlineBox& root = inlineBoxWrapper()->root(); | |
| 454 LayoutUnit newLogicalTop = root.block().style()->isFlippedBlocksWritingMode(
) ? inlineBoxWrapper()->logicalBottom() - root.selectionBottom() : root.selectio
nTop() - inlineBoxWrapper()->logicalTop(); | |
| 455 if (root.block().style()->isHorizontalWritingMode()) | |
| 456 return LayoutRect(0, newLogicalTop, size().width(), root.selectionHeight
()); | |
| 457 return LayoutRect(newLogicalTop, 0, root.selectionHeight(), size().height())
; | |
| 458 } | |
| 459 | |
| 460 void RenderReplaced::setSelectionState(SelectionState state) | |
| 461 { | |
| 462 // The selection state for our containing block hierarchy is updated by the
base class call. | |
| 463 RenderBox::setSelectionState(state); | |
| 464 | |
| 465 if (!inlineBoxWrapper()) | |
| 466 return; | |
| 467 | |
| 468 // We only include the space below the baseline in our layer's cached paint
invalidation rect if the | |
| 469 // image is selected. Since the selection state has changed update the rect. | |
| 470 if (hasLayer()) | |
| 471 setPreviousPaintInvalidationRect(boundsRectForPaintInvalidation(containe
rForPaintInvalidation())); | |
| 472 | |
| 473 if (canUpdateSelectionOnRootLineBoxes()) | |
| 474 inlineBoxWrapper()->root().setHasSelectedChildren(isSelected()); | |
| 475 } | |
| 476 | |
| 477 bool RenderReplaced::isSelected() const | |
| 478 { | |
| 479 SelectionState s = selectionState(); | |
| 480 if (s == SelectionNone) | |
| 481 return false; | |
| 482 if (s == SelectionInside) | |
| 483 return true; | |
| 484 | |
| 485 int selectionStart, selectionEnd; | |
| 486 selectionStartEnd(selectionStart, selectionEnd); | |
| 487 if (s == SelectionStart) | |
| 488 return selectionStart == 0; | |
| 489 | |
| 490 int end = node()->hasChildren() ? node()->countChildren() : 1; | |
| 491 if (s == SelectionEnd) | |
| 492 return selectionEnd == end; | |
| 493 if (s == SelectionBoth) | |
| 494 return selectionStart == 0 && selectionEnd == end; | |
| 495 | |
| 496 ASSERT(0); | |
| 497 return false; | |
| 498 } | |
| 499 LayoutRect RenderReplaced::clippedOverflowRectForPaintInvalidation(const LayoutL
ayerModelObject* paintInvalidationContainer, const PaintInvalidationState* paint
InvalidationState) const | |
| 500 { | |
| 501 if (style()->visibility() != VISIBLE && !enclosingLayer()->hasVisibleContent
()) | |
| 502 return LayoutRect(); | |
| 503 | |
| 504 // The selectionRect can project outside of the overflowRect, so take their
union | |
| 505 // for paint invalidation to avoid selection painting glitches. | |
| 506 LayoutRect r = isSelected() ? localSelectionRect() : visualOverflowRect(); | |
| 507 mapRectToPaintInvalidationBacking(paintInvalidationContainer, r, paintInvali
dationState); | |
| 508 return r; | |
| 509 } | |
| 510 | |
| 511 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 930833003:
Move and rename RenderReplaced and RenderHTMLCanvas to Layout{Replaced,HTMLCanvas}. (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master