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fallback if TextMeasure.actualBoundingBox* unavailable

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This commit is contained in:
Benjamin Große 2020-01-05 14:59:24 +01:00
parent 2d6cf7f0f9
commit 2feedbdbb7
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) { if (text === null) {
return; return;
} }
const fontSize = 20;
element.text = text; element.text = text;
element.font = "20px Virgil"; element.font = `${fontSize}px Virgil`;
const font = context.font; const font = context.font;
context.font = element.font; context.font = element.font;
const { const textMeasure = context.measureText(element.text);
actualBoundingBoxAscent, const width = textMeasure.width;
actualBoundingBoxDescent, const actualBoundingBoxAscent =
width textMeasure.actualBoundingBoxAscent || fontSize;
} = context.measureText(element.text); const actualBoundingBoxDescent =
textMeasure.actualBoundingBoxDescent || 0;
element.actualBoundingBoxAscent = actualBoundingBoxAscent; element.actualBoundingBoxAscent = actualBoundingBoxAscent;
context.font = font; context.font = font;
const height = actualBoundingBoxAscent + actualBoundingBoxDescent; const height = actualBoundingBoxAscent + actualBoundingBoxDescent;