diff options
3 files changed, 43 insertions, 10 deletions
diff --git a/packages/SystemUI/animation/src/com/android/systemui/animation/FontInterpolator.kt b/packages/SystemUI/animation/src/com/android/systemui/animation/FontInterpolator.kt index f0a82113c3a3..83e44b69812b 100644 --- a/packages/SystemUI/animation/src/com/android/systemui/animation/FontInterpolator.kt +++ b/packages/SystemUI/animation/src/com/android/systemui/animation/FontInterpolator.kt @@ -18,8 +18,10 @@ package com.android.systemui.animation import android.graphics.fonts.Font import android.graphics.fonts.FontVariationAxis +import android.util.LruCache import android.util.MathUtils import android.util.MathUtils.abs +import androidx.annotation.VisibleForTesting import java.lang.Float.max import java.lang.Float.min @@ -34,6 +36,10 @@ private const val FONT_ITALIC_MIN = 0f private const val FONT_ITALIC_ANIMATION_STEP = 0.1f private const val FONT_ITALIC_DEFAULT_VALUE = 0f +// Benchmarked via Perfetto, difference between 10 and 50 entries is about 0.3ms in +// frame draw time on a Pixel 6. +@VisibleForTesting const val FONT_CACHE_MAX_ENTRIES = 10 + /** Provide interpolation of two fonts by adjusting font variation settings. */ class FontInterpolator { @@ -81,8 +87,8 @@ class FontInterpolator { // Font interpolator has two level caches: one for input and one for font with different // variation settings. No synchronization is needed since FontInterpolator is not designed to be // thread-safe and can be used only on UI thread. - private val interpCache = hashMapOf<InterpKey, Font>() - private val verFontCache = hashMapOf<VarFontKey, Font>() + private val interpCache = LruCache<InterpKey, Font>(FONT_CACHE_MAX_ENTRIES) + private val verFontCache = LruCache<VarFontKey, Font>(FONT_CACHE_MAX_ENTRIES) // Mutable keys for recycling. private val tmpInterpKey = InterpKey(null, null, 0f) @@ -152,7 +158,7 @@ class FontInterpolator { tmpVarFontKey.set(start, newAxes) val axesCachedFont = verFontCache[tmpVarFontKey] if (axesCachedFont != null) { - interpCache[InterpKey(start, end, progress)] = axesCachedFont + interpCache.put(InterpKey(start, end, progress), axesCachedFont) return axesCachedFont } @@ -160,8 +166,8 @@ class FontInterpolator { // Font.Builder#build won't throw IOException since creating fonts from existing fonts will // not do any IO work. val newFont = Font.Builder(start).setFontVariationSettings(newAxes.toTypedArray()).build() - interpCache[InterpKey(start, end, progress)] = newFont - verFontCache[VarFontKey(start, newAxes)] = newFont + interpCache.put(InterpKey(start, end, progress), newFont) + verFontCache.put(VarFontKey(start, newAxes), newFont) return newFont } diff --git a/packages/SystemUI/animation/src/com/android/systemui/animation/TextAnimator.kt b/packages/SystemUI/animation/src/com/android/systemui/animation/TextAnimator.kt index 9e9929e79d47..3ee97be360f0 100644 --- a/packages/SystemUI/animation/src/com/android/systemui/animation/TextAnimator.kt +++ b/packages/SystemUI/animation/src/com/android/systemui/animation/TextAnimator.kt @@ -24,8 +24,10 @@ import android.graphics.Canvas import android.graphics.Typeface import android.graphics.fonts.Font import android.text.Layout +import android.util.LruCache private const val DEFAULT_ANIMATION_DURATION: Long = 300 +private const val TYPEFACE_CACHE_MAX_ENTRIES = 5 typealias GlyphCallback = (TextAnimator.PositionedGlyph, Float) -> Unit /** @@ -114,7 +116,7 @@ class TextAnimator(layout: Layout, private val invalidateCallback: () -> Unit) { private val fontVariationUtils = FontVariationUtils() - private val typefaceCache = HashMap<String, Typeface?>() + private val typefaceCache = LruCache<String, Typeface>(TYPEFACE_CACHE_MAX_ENTRIES) fun updateLayout(layout: Layout) { textInterpolator.layout = layout @@ -218,12 +220,12 @@ class TextAnimator(layout: Layout, private val invalidateCallback: () -> Unit) { } if (!fvar.isNullOrBlank()) { - textInterpolator.targetPaint.typeface = - typefaceCache.getOrElse(fvar) { - textInterpolator.targetPaint.fontVariationSettings = fvar + textInterpolator.targetPaint.typeface = typefaceCache.get(fvar) ?: run { + textInterpolator.targetPaint.fontVariationSettings = fvar + textInterpolator.targetPaint.typeface?.also { typefaceCache.put(fvar, textInterpolator.targetPaint.typeface) - textInterpolator.targetPaint.typeface } + } } if (color != null) { diff --git a/packages/SystemUI/tests/src/com/android/systemui/animation/FontInterpolatorTest.kt b/packages/SystemUI/tests/src/com/android/systemui/animation/FontInterpolatorTest.kt index 8a5c5b58d058..57a355f4e127 100644 --- a/packages/SystemUI/tests/src/com/android/systemui/animation/FontInterpolatorTest.kt +++ b/packages/SystemUI/tests/src/com/android/systemui/animation/FontInterpolatorTest.kt @@ -106,4 +106,29 @@ class FontInterpolatorTest : SysuiTestCase() { val reversedFont = interp.lerp(endFont, startFont, 0.5f) assertThat(resultFont).isSameInstanceAs(reversedFont) } + + @Test + fun testCacheMaxSize() { + val interp = FontInterpolator() + + val startFont = Font.Builder(sFont) + .setFontVariationSettings("'wght' 100") + .build() + val endFont = Font.Builder(sFont) + .setFontVariationSettings("'wght' 1") + .build() + val resultFont = interp.lerp(startFont, endFont, 0.5f) + for (i in 0..FONT_CACHE_MAX_ENTRIES + 1) { + val f1 = Font.Builder(sFont) + .setFontVariationSettings("'wght' ${i * 100}") + .build() + val f2 = Font.Builder(sFont) + .setFontVariationSettings("'wght' $i") + .build() + interp.lerp(f1, f2, 0.5f) + } + + val cachedFont = interp.lerp(startFont, endFont, 0.5f) + assertThat(resultFont).isNotSameInstanceAs(cachedFont) + } } |