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Prevent redundant layouts when floor(width) is the same (flutter/engine#8867)

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Gary Qian 2019-05-10 09:58:53 -07:00 committed by GitHub
parent 909ba9c7ba
commit a18609ae0d
1 changed files with 5 additions and 3 deletions
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8
engine/src/flutter/third_party/txt/src/txt/paragraph.cc vendored
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@ -477,13 +477,15 @@ void Paragraph::ComputeStrut(StrutMetrics* strut, SkFont& font) {
}
void Paragraph::Layout(double width, bool force) {
double rounded_width = floor(width);
// Do not allow calling layout multiple times without changing anything.
if (!needs_layout_ && width == width_ && !force) {
if (!needs_layout_ && rounded_width == width_ && !force) {
return;
}
needs_layout_ = false;
width_ = floor(width);
width_ = rounded_width;
needs_layout_ = false;
if (!ComputeLineBreaks())
return;