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perf: Avoid creating new typeface instances for system fonts

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Dimitris - Rafail Katsampas
2025-01-26 15:29:38 +02:00
committed by Nathan Walker
parent 30da2752ad
commit 4902e27818
1 changed files with 48 additions and 20 deletions
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68
packages/core/ui/styling/font.android.ts
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@ -41,7 +41,7 @@ export class Font extends FontBase {
getAndroidTypeface(): android.graphics.Typeface {
if (!this._typeface) {
this._typeface = createTypeface(this);
this._typeface = SDK_VERSION >= 28 ? createTypeface(this) : createTypefaceLegacy(this);
}
return this._typeface;
@ -120,25 +120,58 @@ function loadFontFromFile(fontFamily: string, font: Font): android.graphics.Type
function createTypeface(font: Font): android.graphics.Typeface {
const fontFamilies = parseFontFamily(font.fontFamily);
const fontWeight = font.fontWeight;
const isNumericFontWeightSupported = SDK_VERSION >= 28;
const fontWeightNum = getNumericFontWeight(font.fontWeight);
let result: android.graphics.Typeface;
let fontStyle: number = 0; // This will be empty if numeric font weight is supported
for (const fontFamily of fontFamilies) {
switch (fontFamily.toLowerCase()) {
case genericFontFamilies.serif:
result = android.graphics.Typeface.create(android.graphics.Typeface.SERIF, fontWeightNum, font.isItalic);
break;
case genericFontFamilies.sansSerif:
case genericFontFamilies.system:
result = android.graphics.Typeface.create(android.graphics.Typeface.SANS_SERIF, fontWeightNum, font.isItalic);
break;
case genericFontFamilies.monospace:
result = android.graphics.Typeface.create(android.graphics.Typeface.MONOSPACE, fontWeightNum, font.isItalic);
break;
default: {
result = loadFontFromFile(fontFamily, font);
if (result) {
result = android.graphics.Typeface.create(result, fontWeightNum, font.isItalic);
}
break;
}
}
// Found the font!
if (result) {
break;
}
}
if (!result) {
result = android.graphics.Typeface.create(android.graphics.Typeface.SANS_SERIF, fontWeightNum, font.isItalic);
}
return result;
}
function createTypefaceLegacy(font: Font): android.graphics.Typeface {
const fontFamilies = parseFontFamily(font.fontFamily);
const fontWeight = font.fontWeight;
// https://stackoverflow.com/questions/19691530/valid-values-for-androidfontfamily-and-what-they-map-to
let fontSuffix: string;
const fontSuffix = getFontWeightSuffix(fontWeight);
if (isNumericFontWeightSupported) {
fontSuffix = '';
} else {
if (font.isBold) {
fontStyle |= android.graphics.Typeface.BOLD;
}
if (font.isItalic) {
fontStyle |= android.graphics.Typeface.ITALIC;
}
let result: android.graphics.Typeface;
let fontStyle: number = 0;
fontSuffix = getFontWeightSuffix(fontWeight);
if (font.isBold) {
fontStyle |= android.graphics.Typeface.BOLD;
}
if (font.isItalic) {
fontStyle |= android.graphics.Typeface.ITALIC;
}
for (const fontFamily of fontFamilies) {
@ -172,11 +205,6 @@ function createTypeface(font: Font): android.graphics.Typeface {
result = android.graphics.Typeface.create('sans-serif' + fontSuffix, fontStyle);
}
// Newer android versions can accept a numeric font weight
if (isNumericFontWeightSupported) {
result = android.graphics.Typeface.create(result, getNumericFontWeight(fontWeight), font.isItalic);
}
return result;
}