void RenderCombineText::charactersToRender(int start, const UChar*& characters, int& length) const
{
if (m_isCombined) {
length = originalText()->length();
characters = originalText()->characters();
return;
}
characters = text()->characters() + start;
}
void RenderTextFragment::transformText()
{
// Don't reset first-letter here because we are only transforming the truncated fragment.
String textToTransform = originalText();
if (!textToTransform.isNull())
RenderText::setText(textToTransform, true);
}
size_t FrTextSpan::wordCountOriginal() const
{
char *words = originalText() ;
size_t count = word_count(words) ;
FrFree(words) ;
return count ;
}
void RenderQuote::updateDepth()
{
ASSERT(m_isAttached);
int depth = 0;
if (m_previous) {
depth = m_previous->m_depth;
if (depth < 0)
depth = 0;
switch (m_previous->m_type) {
case OPEN_QUOTE:
case NO_OPEN_QUOTE:
depth++;
break;
case CLOSE_QUOTE:
case NO_CLOSE_QUOTE:
break;
}
}
switch (m_type) {
case OPEN_QUOTE:
case NO_OPEN_QUOTE:
break;
case CLOSE_QUOTE:
case NO_CLOSE_QUOTE:
depth--;
break;
}
if (m_depth == depth)
return;
m_depth = depth;
setText(originalText());
}
void LayoutTextFragment::transformText() {
// Note, we have to call LayoutText::setText here because, if we use our
// version we will, potentially, screw up the first-letter settings where
// we only use portions of the string.
if (RefPtr<StringImpl> textToTransform = originalText())
LayoutText::setText(textToTransform.release(), true);
}
char *FrTextSpan::initialText() const
{
const FrObject *txt = getMetaData(init_text_tag) ;
if (txt && txt->consp() && ((FrList*)txt)->first() &&
((FrList*)txt)->first()->stringp())
txt = ((FrList*)txt)->first() ;
const char *printed = FrPrintableName(txt) ;
return printed ? FrDupString(printed) : originalText() ;
}
void RenderSVGInlineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
// Skip RenderText's possible layout scheduling on style change
RenderObject::styleDidChange(diff, oldStyle);
// FIXME: SVG text is apparently always transformed?
if (RefPtr<StringImpl> textToTransform = originalText())
setText(textToTransform.release(), true);
}
void RenderCombineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
setStyleInternal(RenderStyle::clone(style()));
RenderText::styleDidChange(diff, oldStyle);
if (m_isCombined)
RenderText::setTextInternal(originalText()); // This RenderCombineText has been combined once. Restore the original text for the next combineText().
setNeedsFontUpdate(true);
}
void RenderCombineText::getStringToRender(int start, StringView& string, int& length) const
{
ASSERT(start >= 0);
if (m_isCombined) {
string = StringView(originalText());
length = string.length();
return;
}
string = text().createView(start, length);
}
void RenderCombineText::getStringToRender(int start, String& string, int& length) const
{
ASSERT(start >= 0);
if (m_isCombined) {
string = originalText();
length = string.length();
return;
}
string = text();
string = string.substringSharingImpl(static_cast<unsigned>(start), length);
}
void RenderCombineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
// FIXME: This is pretty hackish.
m_combineFontStyle = RenderStyle::clone(style());
RenderText::styleDidChange(diff, oldStyle);
if (m_isCombined) {
RenderText::setTextInternal(originalText()); // This RenderCombineText has been combined once. Restore the original text for the next combineText().
m_isCombined = false;
}
m_needsFontUpdate = true;
}
void RenderSVGInlineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderText::styleDidChange(diff, oldStyle);
updateScaledFont();
bool newPreserves = style().whiteSpace() == PRE;
bool oldPreserves = oldStyle ? oldStyle->whiteSpace() == PRE : false;
if (oldPreserves && !newPreserves) {
setText(applySVGWhitespaceRules(originalText(), false), true);
return;
}
if (!oldPreserves && newPreserves) {
setText(applySVGWhitespaceRules(originalText(), true), true);
return;
}
if (diff != StyleDifferenceLayout)
return;
// The text metrics may be influenced by style changes.
if (auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this))
textAncestor->subtreeStyleDidChange(this);
}
void RenderCombineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
// FIXME: This is pretty hackish.
m_combineFontStyle = RenderStyle::clone(&style());
RenderText::styleDidChange(diff, oldStyle);
if (m_isCombined && selfNeedsLayout()) {
// Layouts cause the text to be recombined; therefore, only only un-combine when the style diff causes a layout.
RenderText::setRenderedText(originalText()); // This RenderCombineText has been combined once. Restore the original text for the next combineText().
m_isCombined = false;
}
m_needsFontUpdate = true;
}
void RenderCounter::computePreferredLogicalWidths(float lead)
{
#ifndef NDEBUG
// FIXME: We shouldn't be modifying the tree in computePreferredLogicalWidths.
// Instead, we should properly hook the appropriate changes in the DOM and modify
// the render tree then. When that's done, we also won't need to override
// computePreferredLogicalWidths at all.
// https://bugs.webkit.org/show_bug.cgi?id=104829
SetLayoutNeededForbiddenScope layoutForbiddenScope(this, false);
#endif
setTextInternal(originalText());
RenderText::computePreferredLogicalWidths(lead);
}
void RenderSVGInlineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderText::styleDidChange(diff, oldStyle);
if (diff == StyleDifferenceLayout) {
// The text metrics may be influenced by style changes.
if (RenderSVGText* textRenderer = RenderSVGText::locateRenderSVGTextAncestor(this))
textRenderer->setNeedsPositioningValuesUpdate();
}
const RenderStyle* newStyle = style();
if (!newStyle || newStyle->whiteSpace() != PRE)
return;
if (!oldStyle || oldStyle->whiteSpace() != PRE)
setText(applySVGWhitespaceRules(originalText(), true), true);
}
void LayoutSVGInlineText::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle)
{
LayoutText::styleDidChange(diff, oldStyle);
updateScaledFont();
bool newPreserves = style() ? style()->whiteSpace() == PRE : false;
bool oldPreserves = oldStyle ? oldStyle->whiteSpace() == PRE : false;
if (oldPreserves != newPreserves) {
setText(originalText(), true);
return;
}
if (!diff.needsFullLayout())
return;
// The text metrics may be influenced by style changes.
if (LayoutSVGText* textLayoutObject = LayoutSVGText::locateLayoutSVGTextAncestor(this))
textLayoutObject->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::StyleChange);
}
void RenderCombineText::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
// FIXME: This is pretty hackish.
// Only cache a new font style if our old one actually changed. We do this to avoid
// clobbering width variants and shrink-to-fit changes, since we won't recombine when
// the font doesn't change.
if (!oldStyle || oldStyle->fontCascade() != style().fontCascade())
m_combineFontStyle = RenderStyle::clone(&style());
RenderText::styleDidChange(diff, oldStyle);
if (m_isCombined && selfNeedsLayout()) {
// Layouts cause the text to be recombined; therefore, only only un-combine when the style diff causes a layout.
RenderText::setRenderedText(originalText()); // This RenderCombineText has been combined once. Restore the original text for the next combineText().
m_isCombined = false;
}
m_needsFontUpdate = true;
}
void RenderQuote::updateDepth()
{
ASSERT(m_attached);
int oldDepth = m_depth;
m_depth = 0;
if (m_previous) {
m_depth = m_previous->m_depth;
switch (m_previous->m_type) {
case OPEN_QUOTE:
case NO_OPEN_QUOTE:
m_depth++;
break;
case CLOSE_QUOTE:
case NO_CLOSE_QUOTE:
if (m_depth)
m_depth--;
break;
}
}
if (oldDepth != m_depth)
setText(originalText());
}
void RenderCounter::computePreferredLogicalWidths(float lead)
{
setTextInternal(originalText());
RenderText::computePreferredLogicalWidths(lead);
}
void RenderCounter::updateCounter()
{
setTextInternal(originalText());
}
void RenderCounter::calcPrefWidths(int lead)
{
setTextInternal(originalText());
RenderText::calcPrefWidths(lead);
}
char *FrTextSpan::getText() const
{
return m_text ? FrDupString(m_text) : originalText() ;
}
void RenderQuote::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderText::styleDidChange(diff, oldStyle);
setText(originalText());
}
void LayoutCounter::updateCounter()
{
setText(originalText());
}
void RenderCombineText::combineText()
{
if (!m_needsFontUpdate)
return;
// An ancestor element may trigger us to lay out again, even when we're already combined.
if (m_isCombined)
RenderText::setRenderedText(originalText());
m_isCombined = false;
m_needsFontUpdate = false;
// CSS3 spec says text-combine works only in vertical writing mode.
if (style().isHorizontalWritingMode())
return;
auto description = originalFont().fontDescription();
float emWidth = description.computedSize() * textCombineMargin;
bool shouldUpdateFont = false;
description.setOrientation(Horizontal); // We are going to draw combined text horizontally.
GlyphOverflow glyphOverflow;
glyphOverflow.computeBounds = true;
float combinedTextWidth = width(0, textLength(), originalFont(), 0, nullptr, &glyphOverflow);
float bestFitDelta = combinedTextWidth - emWidth;
auto bestFitDescription = description;
m_isCombined = combinedTextWidth <= emWidth;
FontSelector* fontSelector = style().fontCascade().fontSelector();
if (m_isCombined)
shouldUpdateFont = m_combineFontStyle->setFontDescription(description); // Need to change font orientation to horizontal.
else {
// Need to try compressed glyphs.
static const FontWidthVariant widthVariants[] = { HalfWidth, ThirdWidth, QuarterWidth };
for (size_t i = 0 ; i < WTF_ARRAY_LENGTH(widthVariants) ; ++i) {
description.setWidthVariant(widthVariants[i]); // When modifying this, make sure to keep it in sync with FontPlatformData::isForTextCombine()!
FontCascade compressedFont(description, style().fontCascade().letterSpacing(), style().fontCascade().wordSpacing());
compressedFont.update(fontSelector);
glyphOverflow.left = glyphOverflow.top = glyphOverflow.right = glyphOverflow.bottom = 0;
float runWidth = RenderText::width(0, textLength(), compressedFont, 0, nullptr, &glyphOverflow);
if (runWidth <= emWidth) {
combinedTextWidth = runWidth;
m_isCombined = true;
// Replace my font with the new one.
shouldUpdateFont = m_combineFontStyle->setFontDescription(description);
break;
}
float widthDelta = runWidth - emWidth;
if (widthDelta < bestFitDelta) {
bestFitDelta = widthDelta;
bestFitDescription = description;
}
}
}
if (!m_isCombined) {
float scaleFactor = std::max(0.4f, emWidth / (emWidth + bestFitDelta));
float originalSize = bestFitDescription.computedSize();
do {
float computedSize = originalSize * scaleFactor;
bestFitDescription.setComputedSize(computedSize);
shouldUpdateFont = m_combineFontStyle->setFontDescription(bestFitDescription);
FontCascade compressedFont(bestFitDescription, style().fontCascade().letterSpacing(), style().fontCascade().wordSpacing());
compressedFont.update(fontSelector);
glyphOverflow.left = glyphOverflow.top = glyphOverflow.right = glyphOverflow.bottom = 0;
float runWidth = RenderText::width(0, textLength(), compressedFont, 0, nullptr, &glyphOverflow);
if (runWidth <= emWidth) {
combinedTextWidth = runWidth;
m_isCombined = true;
break;
}
scaleFactor -= 0.05f;
} while (scaleFactor >= 0.4f);
}
if (shouldUpdateFont)
m_combineFontStyle->fontCascade().update(fontSelector);
if (m_isCombined) {
static NeverDestroyed<String> objectReplacementCharacterString(&objectReplacementCharacter, 1);
RenderText::setRenderedText(objectReplacementCharacterString.get());
m_combinedTextWidth = combinedTextWidth;
m_combinedTextAscent = glyphOverflow.top;
m_combinedTextDescent = glyphOverflow.bottom;
}
}
