blob: cfdd5ada8997a9792efa39477e009c4842d72c05 [file] [log] [blame]
/*
* Copyright (C) 2004-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "RenderTreeAsText.h"
#include "ClipRect.h"
#include "Document.h"
#include "Frame.h"
#include "FrameSelection.h"
#include "FrameView.h"
#include "HTMLElement.h"
#include "HTMLNames.h"
#include "HTMLSpanElement.h"
#include "InlineTextBox.h"
#include "Logging.h"
#include "PrintContext.h"
#include "PseudoElement.h"
#include "RenderBlockFlow.h"
#include "RenderCounter.h"
#include "RenderDetailsMarker.h"
#include "RenderFileUploadControl.h"
#include "RenderFragmentContainer.h"
#include "RenderInline.h"
#include "RenderIterator.h"
#include "RenderLayer.h"
#include "RenderLayerBacking.h"
#include "RenderLineBreak.h"
#include "RenderListItem.h"
#include "RenderListMarker.h"
#include "RenderSVGContainer.h"
#include "RenderSVGGradientStop.h"
#include "RenderSVGImage.h"
#include "RenderSVGInlineText.h"
#include "RenderSVGPath.h"
#include "RenderSVGResourceContainer.h"
#include "RenderSVGRoot.h"
#include "RenderSVGText.h"
#include "RenderTableCell.h"
#include "RenderView.h"
#include "RenderWidget.h"
#include "SVGRenderTreeAsText.h"
#include "ShadowRoot.h"
#include "SimpleLineLayoutResolver.h"
#include "StyleProperties.h"
#include <wtf/HexNumber.h>
#include <wtf/Vector.h>
#include <wtf/text/TextStream.h>
#include <wtf/unicode/CharacterNames.h>
#if PLATFORM(MAC)
#include "ScrollbarThemeMac.h"
#endif
namespace WebCore {
using namespace HTMLNames;
static void writeLayers(TextStream&, const RenderLayer& rootLayer, RenderLayer&, const LayoutRect& paintDirtyRect, OptionSet<RenderAsTextFlag>);
static void printBorderStyle(TextStream& ts, const BorderStyle borderStyle)
{
switch (borderStyle) {
case BorderStyle::None:
ts << "none";
break;
case BorderStyle::Hidden:
ts << "hidden";
break;
case BorderStyle::Inset:
ts << "inset";
break;
case BorderStyle::Groove:
ts << "groove";
break;
case BorderStyle::Ridge:
ts << "ridge";
break;
case BorderStyle::Outset:
ts << "outset";
break;
case BorderStyle::Dotted:
ts << "dotted";
break;
case BorderStyle::Dashed:
ts << "dashed";
break;
case BorderStyle::Solid:
ts << "solid";
break;
case BorderStyle::Double:
ts << "double";
break;
}
ts << " ";
}
static String getTagName(Node* n)
{
if (n->isDocumentNode())
return "";
if (n->nodeType() == Node::COMMENT_NODE)
return "COMMENT";
return n->nodeName();
}
static bool isEmptyOrUnstyledAppleStyleSpan(const Node* node)
{
if (!is<HTMLSpanElement>(node))
return false;
const HTMLElement& element = downcast<HTMLSpanElement>(*node);
if (element.getAttribute(classAttr) != "Apple-style-span")
return false;
if (!node->hasChildNodes())
return true;
const StyleProperties* inlineStyleDecl = element.inlineStyle();
return (!inlineStyleDecl || inlineStyleDecl->isEmpty());
}
String quoteAndEscapeNonPrintables(StringView s)
{
StringBuilder result;
result.append('"');
for (unsigned i = 0; i != s.length(); ++i) {
UChar c = s[i];
if (c == '\\') {
result.appendLiteral("\\\\");
} else if (c == '"') {
result.appendLiteral("\\\"");
} else if (c == '\n' || c == noBreakSpace)
result.append(' ');
else {
if (c >= 0x20 && c < 0x7F)
result.append(c);
else {
result.appendLiteral("\\x{");
appendUnsignedAsHex(c, result);
result.append('}');
}
}
}
result.append('"');
return result.toString();
}
void RenderTreeAsText::writeRenderObject(TextStream& ts, const RenderObject& o, OptionSet<RenderAsTextFlag> behavior)
{
ts << o.renderName();
if (behavior.contains(RenderAsTextFlag::ShowAddresses))
ts << " " << static_cast<const void*>(&o);
if (o.style().zIndex())
ts << " zI: " << o.style().zIndex();
if (o.node()) {
String tagName = getTagName(o.node());
// FIXME: Temporary hack to make tests pass by simulating the old generated content output.
if (o.isPseudoElement() || (o.parent() && o.parent()->isPseudoElement()))
tagName = emptyAtom();
if (!tagName.isEmpty()) {
ts << " {" << tagName << "}";
// flag empty or unstyled AppleStyleSpan because we never
// want to leave them in the DOM
if (isEmptyOrUnstyledAppleStyleSpan(o.node()))
ts << " *empty or unstyled AppleStyleSpan*";
}
}
RenderBlock* cb = o.containingBlock();
bool adjustForTableCells = cb ? cb->isTableCell() : false;
LayoutRect r;
if (is<RenderText>(o)) {
// FIXME: Would be better to dump the bounding box x and y rather than the first run's x and y, but that would involve updating
// many test results.
const RenderText& text = downcast<RenderText>(o);
r = IntRect(text.firstRunLocation(), text.linesBoundingBox().size());
if (!text.firstTextBox() && !text.simpleLineLayout())
adjustForTableCells = false;
} else if (o.isBR()) {
const RenderLineBreak& br = downcast<RenderLineBreak>(o);
IntRect linesBox = br.linesBoundingBox();
r = IntRect(linesBox.x(), linesBox.y(), linesBox.width(), linesBox.height());
if (!br.inlineBoxWrapper())
adjustForTableCells = false;
} else if (is<RenderInline>(o)) {
const RenderInline& inlineFlow = downcast<RenderInline>(o);
// FIXME: Would be better not to just dump 0, 0 as the x and y here.
r = IntRect(0, 0, inlineFlow.linesBoundingBox().width(), inlineFlow.linesBoundingBox().height());
adjustForTableCells = false;
} else if (is<RenderTableCell>(o)) {
// FIXME: Deliberately dump the "inner" box of table cells, since that is what current results reflect. We'd like
// to clean up the results to dump both the outer box and the intrinsic padding so that both bits of information are
// captured by the results.
const RenderTableCell& cell = downcast<RenderTableCell>(o);
r = LayoutRect(cell.x(), cell.y() + cell.intrinsicPaddingBefore(), cell.width(), cell.height() - cell.intrinsicPaddingBefore() - cell.intrinsicPaddingAfter());
} else if (is<RenderBox>(o))
r = downcast<RenderBox>(o).frameRect();
// FIXME: Temporary in order to ensure compatibility with existing layout test results.
if (adjustForTableCells)
r.move(0_lu, -downcast<RenderTableCell>(*o.containingBlock()).intrinsicPaddingBefore());
// FIXME: Convert layout test results to report sub-pixel values, in the meantime using enclosingIntRect
// for consistency with old results.
ts << " " << enclosingIntRect(r);
if (!is<RenderText>(o)) {
if (is<RenderFileUploadControl>(o))
ts << " " << quoteAndEscapeNonPrintables(downcast<RenderFileUploadControl>(o).fileTextValue());
if (o.parent()) {
Color color = o.style().visitedDependentColor(CSSPropertyColor);
if (o.parent()->style().visitedDependentColor(CSSPropertyColor).rgb() != color.rgb())
ts << " [color=" << color.nameForRenderTreeAsText() << "]";
// Do not dump invalid or transparent backgrounds, since that is the default.
Color backgroundColor = o.style().visitedDependentColor(CSSPropertyBackgroundColor);
if (o.parent()->style().visitedDependentColor(CSSPropertyBackgroundColor).rgb() != backgroundColor.rgb()
&& backgroundColor.isValid() && backgroundColor.rgb())
ts << " [bgcolor=" << backgroundColor.nameForRenderTreeAsText() << "]";
Color textFillColor = o.style().visitedDependentColor(CSSPropertyWebkitTextFillColor);
if (o.parent()->style().visitedDependentColor(CSSPropertyWebkitTextFillColor).rgb() != textFillColor.rgb()
&& textFillColor.isValid() && textFillColor.rgb() != color.rgb() && textFillColor.rgb())
ts << " [textFillColor=" << textFillColor.nameForRenderTreeAsText() << "]";
Color textStrokeColor = o.style().visitedDependentColor(CSSPropertyWebkitTextStrokeColor);
if (o.parent()->style().visitedDependentColor(CSSPropertyWebkitTextStrokeColor).rgb() != textStrokeColor.rgb()
&& textStrokeColor.isValid() && textStrokeColor.rgb() != color.rgb() && textStrokeColor.rgb())
ts << " [textStrokeColor=" << textStrokeColor.nameForRenderTreeAsText() << "]";
if (o.parent()->style().textStrokeWidth() != o.style().textStrokeWidth() && o.style().textStrokeWidth() > 0)
ts << " [textStrokeWidth=" << o.style().textStrokeWidth() << "]";
}
if (!is<RenderBoxModelObject>(o) || is<RenderLineBreak>(o))
return;
const RenderBoxModelObject& box = downcast<RenderBoxModelObject>(o);
LayoutUnit borderTop = box.borderTop();
LayoutUnit borderRight = box.borderRight();
LayoutUnit borderBottom = box.borderBottom();
LayoutUnit borderLeft = box.borderLeft();
if (box.isFieldset()) {
const auto& block = downcast<RenderBlock>(box);
if (o.style().writingMode() == TopToBottomWritingMode)
borderTop -= block.intrinsicBorderForFieldset();
else if (o.style().writingMode() == BottomToTopWritingMode)
borderBottom -= block.intrinsicBorderForFieldset();
else if (o.style().writingMode() == LeftToRightWritingMode)
borderLeft -= block.intrinsicBorderForFieldset();
else if (o.style().writingMode() == RightToLeftWritingMode)
borderRight -= block.intrinsicBorderForFieldset();
}
if (borderTop || borderRight || borderBottom || borderLeft) {
ts << " [border:";
BorderValue prevBorder = o.style().borderTop();
if (!borderTop)
ts << " none";
else {
ts << " (" << borderTop << "px ";
printBorderStyle(ts, o.style().borderTopStyle());
Color col = o.style().borderTopColor();
if (!col.isValid())
col = o.style().color();
ts << col.nameForRenderTreeAsText() << ")";
}
if (o.style().borderRight() != prevBorder) {
prevBorder = o.style().borderRight();
if (!borderRight)
ts << " none";
else {
ts << " (" << borderRight << "px ";
printBorderStyle(ts, o.style().borderRightStyle());
Color col = o.style().borderRightColor();
if (!col.isValid())
col = o.style().color();
ts << col.nameForRenderTreeAsText() << ")";
}
}
if (o.style().borderBottom() != prevBorder) {
prevBorder = box.style().borderBottom();
if (!borderBottom)
ts << " none";
else {
ts << " (" << borderBottom << "px ";
printBorderStyle(ts, o.style().borderBottomStyle());
Color col = o.style().borderBottomColor();
if (!col.isValid())
col = o.style().color();
ts << col.nameForRenderTreeAsText() << ")";
}
}
if (o.style().borderLeft() != prevBorder) {
prevBorder = o.style().borderLeft();
if (!borderLeft)
ts << " none";
else {
ts << " (" << borderLeft << "px ";
printBorderStyle(ts, o.style().borderLeftStyle());
Color col = o.style().borderLeftColor();
if (!col.isValid())
col = o.style().color();
ts << col.nameForRenderTreeAsText() << ")";
}
}
ts << "]";
}
#if ENABLE(MATHML)
// We want to show any layout padding, both CSS padding and intrinsic padding, so we can't just check o.style().hasPadding().
if (o.isRenderMathMLBlock() && (box.paddingTop() || box.paddingRight() || box.paddingBottom() || box.paddingLeft())) {
ts << " [";
LayoutUnit cssTop = box.computedCSSPaddingTop();
LayoutUnit cssRight = box.computedCSSPaddingRight();
LayoutUnit cssBottom = box.computedCSSPaddingBottom();
LayoutUnit cssLeft = box.computedCSSPaddingLeft();
if (box.paddingTop() != cssTop || box.paddingRight() != cssRight || box.paddingBottom() != cssBottom || box.paddingLeft() != cssLeft) {
ts << "intrinsic ";
if (cssTop || cssRight || cssBottom || cssLeft)
ts << "+ CSS ";
}
ts << "padding: " << roundToInt(box.paddingTop()) << " " << roundToInt(box.paddingRight()) << " " << roundToInt(box.paddingBottom()) << " " << roundToInt(box.paddingLeft()) << "]";
}
#endif
}
if (is<RenderTableCell>(o)) {
const RenderTableCell& c = downcast<RenderTableCell>(o);
ts << " [r=" << c.rowIndex() << " c=" << c.col() << " rs=" << c.rowSpan() << " cs=" << c.colSpan() << "]";
}
if (is<RenderDetailsMarker>(o)) {
ts << ": ";
switch (downcast<RenderDetailsMarker>(o).orientation()) {
case RenderDetailsMarker::Left:
ts << "left";
break;
case RenderDetailsMarker::Right:
ts << "right";
break;
case RenderDetailsMarker::Up:
ts << "up";
break;
case RenderDetailsMarker::Down:
ts << "down";
break;
}
}
if (is<RenderListMarker>(o)) {
String text = downcast<RenderListMarker>(o).text();
if (!text.isEmpty()) {
if (text.length() != 1)
text = quoteAndEscapeNonPrintables(text);
else {
switch (text[0]) {
case bullet:
text = "bullet";
break;
case blackSquare:
text = "black square";
break;
case whiteBullet:
text = "white bullet";
break;
default:
text = quoteAndEscapeNonPrintables(text);
}
}
ts << ": " << text;
}
}
writeDebugInfo(ts, o, behavior);
}
void writeDebugInfo(TextStream& ts, const RenderObject& object, OptionSet<RenderAsTextFlag> behavior)
{
if (behavior.contains(RenderAsTextFlag::ShowIDAndClass)) {
if (Element* element = is<Element>(object.node()) ? downcast<Element>(object.node()) : nullptr) {
if (element->hasID())
ts << " id=\"" + element->getIdAttribute() + "\"";
if (element->hasClass()) {
ts << " class=\"";
for (size_t i = 0; i < element->classNames().size(); ++i) {
if (i > 0)
ts << " ";
ts << element->classNames()[i];
}
ts << "\"";
}
}
}
if (behavior.contains(RenderAsTextFlag::ShowLayoutState)) {
bool needsLayout = object.selfNeedsLayout() || object.needsPositionedMovementLayout() || object.posChildNeedsLayout() || object.normalChildNeedsLayout();
if (needsLayout)
ts << " (needs layout:";
bool havePrevious = false;
if (object.selfNeedsLayout()) {
ts << " self";
havePrevious = true;
}
if (object.needsPositionedMovementLayout()) {
if (havePrevious)
ts << ",";
havePrevious = true;
ts << " positioned movement";
}
if (object.normalChildNeedsLayout()) {
if (havePrevious)
ts << ",";
havePrevious = true;
ts << " child";
}
if (object.posChildNeedsLayout()) {
if (havePrevious)
ts << ",";
ts << " positioned child";
}
if (needsLayout)
ts << ")";
}
if (behavior.contains(RenderAsTextFlag::ShowOverflow) && is<RenderBox>(object)) {
const auto& box = downcast<RenderBox>(object);
if (box.hasRenderOverflow()) {
LayoutRect layoutOverflow = box.layoutOverflowRect();
ts << " (layout overflow " << layoutOverflow.x().toInt() << "," << layoutOverflow.y().toInt() << " " << layoutOverflow.width().toInt() << "x" << layoutOverflow.height().toInt() << ")";
if (box.hasVisualOverflow()) {
LayoutRect visualOverflow = box.visualOverflowRect();
ts << " (visual overflow " << visualOverflow.x().toInt() << "," << visualOverflow.y().toInt() << " " << visualOverflow.width().toInt() << "x" << visualOverflow.height().toInt() << ")";
}
}
}
}
static void writeTextRun(TextStream& ts, const RenderText& o, const InlineTextBox& run)
{
// FIXME: For now use an "enclosingIntRect" model for x, y and logicalWidth, although this makes it harder
// to detect any changes caused by the conversion to floating point. :(
int x = run.x();
int y = run.y();
int logicalWidth = ceilf(run.left() + run.logicalWidth()) - x;
// FIXME: Table cell adjustment is temporary until results can be updated.
if (is<RenderTableCell>(*o.containingBlock()))
y -= floorToInt(downcast<RenderTableCell>(*o.containingBlock()).intrinsicPaddingBefore());
ts << "text run at (" << x << "," << y << ") width " << logicalWidth;
if (!run.isLeftToRightDirection() || run.dirOverride()) {
ts << (!run.isLeftToRightDirection() ? " RTL" : " LTR");
if (run.dirOverride())
ts << " override";
}
ts << ": "
<< quoteAndEscapeNonPrintables(String(o.text()).substring(run.start(), run.len()));
if (run.hasHyphen())
ts << " + hyphen string " << quoteAndEscapeNonPrintables(o.style().hyphenString().string());
ts << "\n";
}
static void writeSimpleLine(TextStream& ts, const RenderText& renderText, const SimpleLineLayout::RunResolver::Run& run)
{
auto rect = run.rect();
int x = rect.x();
int y = rect.y();
int logicalWidth = ceilf(rect.x() + rect.width()) - x;
if (is<RenderTableCell>(*renderText.containingBlock()))
y -= floorToInt(downcast<RenderTableCell>(*renderText.containingBlock()).intrinsicPaddingBefore());
ts << "text run at (" << x << "," << y << ") width " << logicalWidth;
ts << ": " << quoteAndEscapeNonPrintables(run.text());
if (run.hasHyphen())
ts << " + hyphen string " << quoteAndEscapeNonPrintables(renderText.style().hyphenString().string());
ts << "\n";
}
void write(TextStream& ts, const RenderObject& o, OptionSet<RenderAsTextFlag> behavior)
{
if (is<RenderSVGShape>(o)) {
write(ts, downcast<RenderSVGShape>(o), behavior);
return;
}
if (is<RenderSVGGradientStop>(o)) {
writeSVGGradientStop(ts, downcast<RenderSVGGradientStop>(o), behavior);
return;
}
if (is<RenderSVGResourceContainer>(o)) {
writeSVGResourceContainer(ts, downcast<RenderSVGResourceContainer>(o), behavior);
return;
}
if (is<RenderSVGContainer>(o)) {
writeSVGContainer(ts, downcast<RenderSVGContainer>(o), behavior);
return;
}
if (is<RenderSVGRoot>(o)) {
write(ts, downcast<RenderSVGRoot>(o), behavior);
return;
}
if (is<RenderSVGText>(o)) {
writeSVGText(ts, downcast<RenderSVGText>(o), behavior);
return;
}
if (is<RenderSVGInlineText>(o)) {
writeSVGInlineText(ts, downcast<RenderSVGInlineText>(o), behavior);
return;
}
if (is<RenderSVGImage>(o)) {
writeSVGImage(ts, downcast<RenderSVGImage>(o), behavior);
return;
}
ts << indent;
RenderTreeAsText::writeRenderObject(ts, o, behavior);
ts << "\n";
TextStream::IndentScope indentScope(ts);
if (is<RenderText>(o)) {
auto& text = downcast<RenderText>(o);
if (auto layout = text.simpleLineLayout()) {
ASSERT(!text.firstTextBox());
auto resolver = runResolver(downcast<RenderBlockFlow>(*text.parent()), *layout);
for (auto run : resolver.rangeForRenderer(text)) {
ts << indent;
writeSimpleLine(ts, text, run);
}
} else {
for (auto* box = text.firstTextBox(); box; box = box->nextTextBox()) {
ts << indent;
writeTextRun(ts, text, *box);
}
}
} else {
for (auto& child : childrenOfType<RenderObject>(downcast<RenderElement>(o))) {
if (child.hasLayer())
continue;
write(ts, child, behavior);
}
}
if (is<RenderWidget>(o)) {
Widget* widget = downcast<RenderWidget>(o).widget();
if (is<FrameView>(widget)) {
FrameView& view = downcast<FrameView>(*widget);
if (RenderView* root = view.frame().contentRenderer()) {
if (!(behavior.contains(RenderAsTextFlag::DontUpdateLayout)))
view.layoutContext().layout();
if (RenderLayer* layer = root->layer())
writeLayers(ts, *layer, *layer, layer->rect(), behavior);
}
}
}
}
enum LayerPaintPhase {
LayerPaintPhaseAll = 0,
LayerPaintPhaseBackground = -1,
LayerPaintPhaseForeground = 1
};
static void writeLayer(TextStream& ts, const RenderLayer& layer, const LayoutRect& layerBounds, const LayoutRect& backgroundClipRect, const LayoutRect& clipRect,
LayerPaintPhase paintPhase = LayerPaintPhaseAll, OptionSet<RenderAsTextFlag> behavior = { })
{
IntRect adjustedLayoutBounds = snappedIntRect(layerBounds);
IntRect adjustedBackgroundClipRect = snappedIntRect(backgroundClipRect);
IntRect adjustedClipRect = snappedIntRect(clipRect);
ts << indent << "layer ";
if (behavior.contains(RenderAsTextFlag::ShowAddresses))
ts << static_cast<const void*>(&layer) << " ";
ts << adjustedLayoutBounds;
if (!adjustedLayoutBounds.isEmpty()) {
if (!adjustedBackgroundClipRect.contains(adjustedLayoutBounds))
ts << " backgroundClip " << adjustedBackgroundClipRect;
if (!adjustedClipRect.contains(adjustedLayoutBounds))
ts << " clip " << adjustedClipRect;
}
if (layer.renderer().hasOverflowClip()) {
if (layer.scrollOffset().x())
ts << " scrollX " << layer.scrollOffset().x();
if (layer.scrollOffset().y())
ts << " scrollY " << layer.scrollOffset().y();
if (layer.renderBox() && roundToInt(layer.renderBox()->clientWidth()) != layer.scrollWidth())
ts << " scrollWidth " << layer.scrollWidth();
if (layer.renderBox() && roundToInt(layer.renderBox()->clientHeight()) != layer.scrollHeight())
ts << " scrollHeight " << layer.scrollHeight();
#if PLATFORM(MAC)
ScrollbarTheme& scrollbarTheme = ScrollbarTheme::theme();
if (!scrollbarTheme.isMockTheme() && layer.hasVerticalScrollbar()) {
ScrollbarThemeMac& macTheme = *static_cast<ScrollbarThemeMac*>(&scrollbarTheme);
if (macTheme.isLayoutDirectionRTL(*layer.verticalScrollbar()))
ts << " scrollbarHasRTLLayoutDirection";
}
#endif
}
if (paintPhase == LayerPaintPhaseBackground)
ts << " layerType: background only";
else if (paintPhase == LayerPaintPhaseForeground)
ts << " layerType: foreground only";
if (behavior.contains(RenderAsTextFlag::ShowCompositedLayers)) {
if (layer.isComposited()) {
ts << " (composited, bounds=" << layer.backing()->compositedBounds() << ", drawsContent=" << layer.backing()->graphicsLayer()->drawsContent()
<< ", paints into ancestor=" << layer.backing()->paintsIntoCompositedAncestor() << ")";
} else if (layer.paintsIntoProvidedBacking())
ts << " (shared backing of " << layer.backingProviderLayer() << ")";
}
#if ENABLE(CSS_COMPOSITING)
if (layer.isolatesBlending())
ts << " isolatesBlending";
if (layer.hasBlendMode())
ts << " blendMode: " << compositeOperatorName(CompositeSourceOver, layer.blendMode());
#endif
ts << "\n";
}
static void writeLayerRenderers(TextStream& ts, const RenderLayer& layer, LayerPaintPhase paintPhase, OptionSet<RenderAsTextFlag> behavior)
{
if (paintPhase != LayerPaintPhaseBackground) {
TextStream::IndentScope indentScope(ts);
write(ts, layer.renderer(), behavior);
}
}
static LayoutSize maxLayoutOverflow(const RenderBox* box)
{
LayoutRect overflowRect = box->layoutOverflowRect();
return LayoutSize(overflowRect.maxX(), overflowRect.maxY());
}
static void writeLayers(TextStream& ts, const RenderLayer& rootLayer, RenderLayer& layer, const LayoutRect& paintRect, OptionSet<RenderAsTextFlag> behavior)
{
// FIXME: Apply overflow to the root layer to not break every test. Complete hack. Sigh.
LayoutRect paintDirtyRect(paintRect);
if (&rootLayer == &layer) {
paintDirtyRect.setWidth(std::max<LayoutUnit>(paintDirtyRect.width(), rootLayer.renderBox()->layoutOverflowRect().maxX()));
paintDirtyRect.setHeight(std::max<LayoutUnit>(paintDirtyRect.height(), rootLayer.renderBox()->layoutOverflowRect().maxY()));
layer.setSize(layer.size().expandedTo(snappedIntSize(maxLayoutOverflow(layer.renderBox()), LayoutPoint(0, 0))));
}
// Calculate the clip rects we should use.
LayoutRect layerBounds;
ClipRect damageRect;
ClipRect clipRectToApply;
LayoutSize offsetFromRoot = layer.offsetFromAncestor(&rootLayer);
layer.calculateRects(RenderLayer::ClipRectsContext(&rootLayer, TemporaryClipRects), paintDirtyRect, layerBounds, damageRect, clipRectToApply, offsetFromRoot);
// Ensure our lists are up-to-date.
layer.updateLayerListsIfNeeded();
layer.updateDescendantDependentFlags();
bool shouldPaint = (behavior.contains(RenderAsTextFlag::ShowAllLayers)) ? true : layer.intersectsDamageRect(layerBounds, damageRect.rect(), &rootLayer, layer.offsetFromAncestor(&rootLayer));
auto negativeZOrderLayers = layer.negativeZOrderLayers();
bool paintsBackgroundSeparately = negativeZOrderLayers.size() > 0;
if (shouldPaint && paintsBackgroundSeparately) {
writeLayer(ts, layer, layerBounds, damageRect.rect(), clipRectToApply.rect(), LayerPaintPhaseBackground, behavior);
writeLayerRenderers(ts, layer, LayerPaintPhaseBackground, behavior);
}
if (negativeZOrderLayers.size()) {
if (behavior.contains(RenderAsTextFlag::ShowLayerNesting)) {
ts << indent << " negative z-order list (" << negativeZOrderLayers.size() << ")\n";
ts.increaseIndent();
}
for (auto* currLayer : negativeZOrderLayers)
writeLayers(ts, rootLayer, *currLayer, paintDirtyRect, behavior);
if (behavior.contains(RenderAsTextFlag::ShowLayerNesting))
ts.decreaseIndent();
}
if (shouldPaint) {
writeLayer(ts, layer, layerBounds, damageRect.rect(), clipRectToApply.rect(), paintsBackgroundSeparately ? LayerPaintPhaseForeground : LayerPaintPhaseAll, behavior);
if (behavior.contains(RenderAsTextFlag::ShowLayerFragments)) {
LayerFragments layerFragments;
layer.collectFragments(layerFragments, &rootLayer, paintDirtyRect, RenderLayer::PaginationInclusionMode::ExcludeCompositedPaginatedLayers, TemporaryClipRects, IgnoreOverlayScrollbarSize, RespectOverflowClip, offsetFromRoot);
if (layerFragments.size() > 1) {
TextStream::IndentScope indentScope(ts, 2);
for (unsigned i = 0; i < layerFragments.size(); ++i) {
const auto& fragment = layerFragments[i];
ts << indent << " fragment " << i << ": bounds in layer " << fragment.layerBounds << " fragment bounds " << fragment.boundingBox << "\n";
}
}
}
writeLayerRenderers(ts, layer, paintsBackgroundSeparately ? LayerPaintPhaseForeground : LayerPaintPhaseAll, behavior);
}
auto normalFlowLayers = layer.normalFlowLayers();
if (normalFlowLayers.size()) {
if (behavior.contains(RenderAsTextFlag::ShowLayerNesting)) {
ts << indent << " normal flow list (" << normalFlowLayers.size() << ")\n";
ts.increaseIndent();
}
for (auto* currLayer : normalFlowLayers)
writeLayers(ts, rootLayer, *currLayer, paintDirtyRect, behavior);
if (behavior.contains(RenderAsTextFlag::ShowLayerNesting))
ts.decreaseIndent();
}
auto positiveZOrderLayers = layer.positiveZOrderLayers();
if (positiveZOrderLayers.size()) {
size_t layerCount = positiveZOrderLayers.size();
if (layerCount) {
if (behavior.contains(RenderAsTextFlag::ShowLayerNesting)) {
ts << indent << " positive z-order list (" << layerCount << ")\n";
ts.increaseIndent();
}
for (auto* currLayer : positiveZOrderLayers)
writeLayers(ts, rootLayer, *currLayer, paintDirtyRect, behavior);
if (behavior.contains(RenderAsTextFlag::ShowLayerNesting))
ts.decreaseIndent();
}
}
}
static String nodePosition(Node* node)
{
StringBuilder result;
auto* body = node->document().bodyOrFrameset();
Node* parent;
for (Node* n = node; n; n = parent) {
parent = n->parentOrShadowHostNode();
if (n != node)
result.appendLiteral(" of ");
if (parent) {
if (body && n == body) {
// We don't care what offset body may be in the document.
result.appendLiteral("body");
break;
}
if (n->isShadowRoot()) {
result.append('{');
result.append(getTagName(n));
result.append('}');
} else {
result.appendLiteral("child ");
result.appendNumber(n->computeNodeIndex());
result.appendLiteral(" {");
result.append(getTagName(n));
result.append('}');
}
} else
result.appendLiteral("document");
}
return result.toString();
}
static void writeSelection(TextStream& ts, const RenderBox& renderer)
{
if (!renderer.isRenderView())
return;
Frame* frame = renderer.document().frame();
if (!frame)
return;
VisibleSelection selection = frame->selection().selection();
if (selection.isCaret()) {
ts << "caret: position " << selection.start().deprecatedEditingOffset() << " of " << nodePosition(selection.start().deprecatedNode());
if (selection.affinity() == UPSTREAM)
ts << " (upstream affinity)";
ts << "\n";
} else if (selection.isRange())
ts << "selection start: position " << selection.start().deprecatedEditingOffset() << " of " << nodePosition(selection.start().deprecatedNode()) << "\n"
<< "selection end: position " << selection.end().deprecatedEditingOffset() << " of " << nodePosition(selection.end().deprecatedNode()) << "\n";
}
static String externalRepresentation(RenderBox& renderer, OptionSet<RenderAsTextFlag> behavior)
{
TextStream ts(TextStream::LineMode::MultipleLine, TextStream::Formatting::SVGStyleRect | TextStream::Formatting::LayoutUnitsAsIntegers);
if (!renderer.hasLayer())
return ts.release();
LOG(Layout, "externalRepresentation: dumping layer tree");
RenderLayer& layer = *renderer.layer();
writeLayers(ts, layer, layer, layer.rect(), behavior);
writeSelection(ts, renderer);
return ts.release();
}
static void updateLayoutIgnoringPendingStylesheetsIncludingSubframes(Document& document)
{
document.updateLayoutIgnorePendingStylesheets();
auto* frame = document.frame();
for (auto* subframe = frame; subframe; subframe = subframe->tree().traverseNext(frame)) {
if (auto* document = subframe->document())
document->updateLayoutIgnorePendingStylesheets();
}
}
String externalRepresentation(Frame* frame, OptionSet<RenderAsTextFlag> behavior)
{
ASSERT(frame);
ASSERT(frame->document());
if (!(behavior.contains(RenderAsTextFlag::DontUpdateLayout)))
updateLayoutIgnoringPendingStylesheetsIncludingSubframes(*frame->document());
auto* renderer = frame->contentRenderer();
if (!renderer)
return String();
PrintContext printContext(frame);
if (behavior.contains(RenderAsTextFlag::PrintingMode))
printContext.begin(renderer->width());
return externalRepresentation(*renderer, behavior);
}
String externalRepresentation(Element* element, OptionSet<RenderAsTextFlag> behavior)
{
ASSERT(element);
// This function doesn't support printing mode.
ASSERT(!(behavior.contains(RenderAsTextFlag::PrintingMode)));
if (!(behavior.contains(RenderAsTextFlag::DontUpdateLayout)))
updateLayoutIgnoringPendingStylesheetsIncludingSubframes(element->document());
auto* renderer = element->renderer();
if (!is<RenderBox>(renderer))
return String();
return externalRepresentation(downcast<RenderBox>(*renderer), behavior | RenderAsTextFlag::ShowAllLayers);
}
static void writeCounterValuesFromChildren(TextStream& stream, const RenderElement* parent, bool& isFirstCounter)
{
if (!parent)
return;
for (auto& counter : childrenOfType<RenderCounter>(*parent)) {
if (!isFirstCounter)
stream << " ";
isFirstCounter = false;
String str(counter.text());
stream << str;
}
}
String counterValueForElement(Element* element)
{
// Make sure the element is not freed during the layout.
RefPtr<Element> elementRef(element);
element->document().updateLayout();
TextStream stream(TextStream::LineMode::MultipleLine, TextStream::Formatting::SVGStyleRect | TextStream::Formatting::LayoutUnitsAsIntegers);
bool isFirstCounter = true;
// The counter renderers should be children of :before or :after pseudo-elements.
if (PseudoElement* before = element->beforePseudoElement())
writeCounterValuesFromChildren(stream, before->renderer(), isFirstCounter);
if (PseudoElement* after = element->afterPseudoElement())
writeCounterValuesFromChildren(stream, after->renderer(), isFirstCounter);
return stream.release();
}
String markerTextForListItem(Element* element)
{
// Make sure the element is not freed during the layout.
RefPtr<Element> elementRef(element);
element->document().updateLayout();
RenderElement* renderer = element->renderer();
if (!is<RenderListItem>(renderer))
return String();
return downcast<RenderListItem>(*renderer).markerText();
}
} // namespace WebCore