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Merge pull request #156 from gipsy-king/textmeasure-actualboundingbox

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fallback if TextMeasure.actualBoundingBox* unavailable
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Giovanni Giordano 2020-01-05 15:27:14 +01:00 committed by GitHub
commit d61ecca184
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1 changed files with 8 additions and 6 deletions
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14
src/index.tsx
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@ -1335,15 +1335,17 @@ class App extends React.Component<{}, AppState> {
if (text === null) {
return;
}
const fontSize = 20;
element.text = text;
element.font = "20px Virgil";
element.font = `${fontSize}px Virgil`;
const font = context.font;
context.font = element.font;
const {
actualBoundingBoxAscent,
actualBoundingBoxDescent,
width
} = context.measureText(element.text);
const textMeasure = context.measureText(element.text);
const width = textMeasure.width;
const actualBoundingBoxAscent =
textMeasure.actualBoundingBoxAscent || fontSize;
const actualBoundingBoxDescent =
textMeasure.actualBoundingBoxDescent || 0;
element.actualBoundingBoxAscent = actualBoundingBoxAscent;
context.font = font;
const height = actualBoundingBoxAscent + actualBoundingBoxDescent;