TextRun SVGInlineTextBox::constructTextRun(RenderStyle* style, const SVGTextFragment& fragment) const
{
ASSERT(style);
RenderText* text = &renderer();
// FIXME(crbug.com/264211): This should not be necessary but can occur if we
// layout during layout. Remove this when 264211 is fixed.
RELEASE_ASSERT(!text->needsLayout());
TextRun run(static_cast<const LChar*>(0) // characters, will be set below if non-zero.
, 0 // length, will be set below if non-zero.
, 0 // xPos, only relevant with allowTabs=true
, 0 // padding, only relevant for justified text, not relevant for SVG
, TextRun::AllowTrailingExpansion
, direction()
, dirOverride() || style->rtlOrdering() == VisualOrder /* directionalOverride */);
if (fragment.length) {
if (text->is8Bit())
run.setText(text->characters8() + fragment.characterOffset, fragment.length);
else
run.setText(text->characters16() + fragment.characterOffset, fragment.length);
}
// We handle letter & word spacing ourselves.
run.disableSpacing();
// Propagate the maximum length of the characters buffer to the TextRun, even when we're only processing a substring.
run.setCharactersLength(text->textLength() - fragment.characterOffset);
ASSERT(run.charactersLength() >= run.length());
return run;
}
static float textWidth(const RenderText& text, unsigned from, unsigned length, float xPosition, const RenderStyle& style)
{
if (style.font().isFixedPitch() || (!from && length == text.textLength()))
return text.width(from, length, style.font(), xPosition, nullptr, nullptr);
// FIXME: Add templated UChar/LChar paths.
TextRun run = text.is8Bit() ? TextRun(text.characters8() + from, length) : TextRun(text.characters16() + from, length);
run.setCharactersLength(text.textLength() - from);
ASSERT(run.charactersLength() >= run.length());
run.setXPos(xPosition);
return style.font().width(run);
}
static bool canUseForText(const RenderText& textRenderer, const SimpleFontData& fontData)
{
if (textRenderer.is8Bit())
return canUseForText(textRenderer.characters8(), textRenderer.textLength(), fontData);
return canUseForText(textRenderer.characters16(), textRenderer.textLength(), fontData);
}
static AvoidanceReasonFlags canUseForText(const RenderText& textRenderer, const Font& font, FallThrough fallthrough)
{
if (textRenderer.is8Bit())
return canUseForText(textRenderer.characters8(), textRenderer.textLength(), font, fallthrough);
return canUseForText(textRenderer.characters16(), textRenderer.textLength(), font, fallthrough);
}
