Store font variation settings into native Paint (3f679c22) · Commits · e / os / android_frameworks_base

graphics/java/android/graphics/Paint.java

+42 −4

Original line number	Diff line number	Diff line
		@@ -41,6 +41,7 @@ import android.text.SpannedString;
		import android.text.TextUtils;

		import com.android.internal.annotations.GuardedBy;
		import com.android.text.flags.Flags;

		import dalvik.annotation.optimization.CriticalNative;
		import dalvik.annotation.optimization.FastNative;
		@@ -1999,6 +2000,14 @@ public class Paint {
		return mFontVariationSettings;
		}

		/**
		* A change ID for new font variation settings management.
		* @hide
		*/
		@ChangeId
		@EnabledSince(targetSdkVersion = 36)
		public static final long NEW_FONT_VARIATION_MANAGEMENT = 361260253L;

		/**
		* Sets TrueType or OpenType font variation settings. The settings string is constructed from
		* multiple pairs of axis tag and style values. The axis tag must contain four ASCII characters
		@@ -2028,12 +2037,16 @@ public class Paint {
		* </li>
		* </ul>
		*
		* <p>Note: If the application that targets API 35 or before, this function mutates the
		* underlying typeface instance.
		*
		* @param fontVariationSettings font variation settings. You can pass null or empty string as
		* no variation settings.
		*
		* @return true if the given settings is effective to at least one font file underlying this
		* typeface. This function also returns true for empty settings string. Otherwise
		* returns false
		* @return If the application that targets API 36 or later and is running on devices API 36 or
		* later, this function always returns true. Otherwise, this function returns true if
		* the given settings is effective to at least one font file underlying this typeface.
		* This function also returns true for empty settings string. Otherwise returns false.
		*
		* @throws IllegalArgumentException If given string is not a valid font variation settings
		* format
		@@ -2042,6 +2055,26 @@ public class Paint {
		* @see FontVariationAxis
		*/
		public boolean setFontVariationSettings(String fontVariationSettings) {
		final boolean useFontVariationStore = Flags.typefaceRedesign()
		&& CompatChanges.isChangeEnabled(NEW_FONT_VARIATION_MANAGEMENT);
		if (useFontVariationStore) {
		FontVariationAxis[] axes =
		FontVariationAxis.fromFontVariationSettings(fontVariationSettings);
		if (axes == null) {
		nSetFontVariationOverride(mNativePaint, 0);
		mFontVariationSettings = null;
		return true;
		}

		long builderPtr = nCreateFontVariationBuilder(axes.length);
		for (int i = 0; i < axes.length; ++i) {
		nAddFontVariationToBuilder(builderPtr, axes[i].getOpenTypeTagValue(),
		axes[i].getStyleValue());
		}
		nSetFontVariationOverride(mNativePaint, builderPtr);
		mFontVariationSettings = fontVariationSettings;
		return true;
		}
		final String settings = TextUtils.nullIfEmpty(fontVariationSettings);
		if (settings == mFontVariationSettings
		\|\| (settings != null && settings.equals(mFontVariationSettings))) {
		@@ -3829,7 +3862,12 @@ public class Paint {
		private static native void nSetTextSize(long paintPtr, float textSize);
		@CriticalNative
		private static native boolean nEqualsForTextMeasurement(long leftPaintPtr, long rightPaintPtr);

		@CriticalNative
		private static native long nCreateFontVariationBuilder(int size);
		@CriticalNative
		private static native void nAddFontVariationToBuilder(long builderPtr, int tag, float value);
		@CriticalNative
		private static native void nSetFontVariationOverride(long paintPtr, long builderPtr);

		// Following Native methods are kept for old Robolectric JNI signature used by
		// SystemUIGoogleRoboRNGTests

libs/hwui/hwui/Paint.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -159,6 +159,14 @@ public:
		return SkSamplingOptions(this->filterMode());
		}

		void setVariationOverride(minikin::VariationSettings&& varSettings) {
		mFontVariationOverride = std::move(varSettings);
		}

		const minikin::VariationSettings& getFontVariationOverride() const {
		return mFontVariationOverride;
		}

		// The Java flags (Paint.java) no longer fit into the native apis directly.
		// These methods handle converting to and from them and the native representations
		// in android::Paint.
		@@ -179,6 +187,7 @@ private:
		float mLetterSpacing = 0;
		float mWordSpacing = 0;
		std::vector<minikin::FontFeature> mFontFeatureSettings;
		minikin::VariationSettings mFontVariationOverride;
		uint32_t mMinikinLocaleListId;
		std::optional<minikin::FamilyVariant> mFamilyVariant;
		uint32_t mHyphenEdit = 0;

libs/hwui/hwui/PaintImpl.cpp

+3 −0

Original line number	Diff line number	Diff line
		@@ -39,6 +39,7 @@ Paint::Paint(const Paint& paint)
		, mLetterSpacing(paint.mLetterSpacing)
		, mWordSpacing(paint.mWordSpacing)
		, mFontFeatureSettings(paint.mFontFeatureSettings)
		, mFontVariationOverride(paint.mFontVariationOverride)
		, mMinikinLocaleListId(paint.mMinikinLocaleListId)
		, mFamilyVariant(paint.mFamilyVariant)
		, mHyphenEdit(paint.mHyphenEdit)
		@@ -59,6 +60,7 @@ Paint& Paint::operator=(const Paint& other) {
		mLetterSpacing = other.mLetterSpacing;
		mWordSpacing = other.mWordSpacing;
		mFontFeatureSettings = other.mFontFeatureSettings;
		mFontVariationOverride = other.mFontVariationOverride;
		mMinikinLocaleListId = other.mMinikinLocaleListId;
		mFamilyVariant = other.mFamilyVariant;
		mHyphenEdit = other.mHyphenEdit;
		@@ -76,6 +78,7 @@ bool operator==(const Paint& a, const Paint& b) {
		return static_cast<const SkPaint&>(a) == static_cast<const SkPaint&>(b) && a.mFont == b.mFont &&
		a.mLooper == b.mLooper && a.mLetterSpacing == b.mLetterSpacing &&
		a.mWordSpacing == b.mWordSpacing && a.mFontFeatureSettings == b.mFontFeatureSettings &&
		a.mFontVariationOverride == b.mFontVariationOverride &&
		a.mMinikinLocaleListId == b.mMinikinLocaleListId &&
		a.mFamilyVariant == b.mFamilyVariant && a.mHyphenEdit == b.mHyphenEdit &&
		a.mTypeface == b.mTypeface && a.mAlign == b.mAlign &&

libs/hwui/jni/Paint.cpp

+33 −0

Original line number	Diff line number	Diff line
		@@ -1127,6 +1127,36 @@ namespace PaintGlue {
		return leftMinikinPaint == rightMinikinPaint;
		}

		struct VariationBuilder {
		std::vector<minikin::FontVariation> varSettings;
		};

		static jlong createFontVariationBuilder(CRITICAL_JNI_PARAMS_COMMA jint size) {
		VariationBuilder* builder = new VariationBuilder();
		builder->varSettings.reserve(size);
		return reinterpret_cast<jlong>(builder);
		}

		static void addFontVariationToBuilder(CRITICAL_JNI_PARAMS_COMMA jlong builderPtr, jint tag,
		jfloat value) {
		VariationBuilder* builder = reinterpret_cast<VariationBuilder*>(builderPtr);
		builder->varSettings.emplace_back(static_cast<minikin::AxisTag>(tag), value);
		}

		static void setFontVariationOverride(CRITICAL_JNI_PARAMS_COMMA jlong paintHandle,
		jlong builderPtr) {
		Paint* paint = reinterpret_cast<Paint*>(paintHandle);
		if (builderPtr == 0) {
		paint->setVariationOverride(minikin::VariationSettings());
		return;
		}

		VariationBuilder* builder = reinterpret_cast<VariationBuilder*>(builderPtr);
		paint->setVariationOverride(
		minikin::VariationSettings(builder->varSettings, false /* sorted */));
		delete builder;
		}

		}; // namespace PaintGlue

		static const JNINativeMethod methods[] = {
		@@ -1235,6 +1265,9 @@ static const JNINativeMethod methods[] = {
		{"nSetShadowLayer", "(JFFFJJ)V", (void*)PaintGlue::setShadowLayer},
		{"nHasShadowLayer", "(J)Z", (void*)PaintGlue::hasShadowLayer},
		{"nEqualsForTextMeasurement", "(JJ)Z", (void*)PaintGlue::equalsForTextMeasurement},
		{"nCreateFontVariationBuilder", "(I)J", (void*)PaintGlue::createFontVariationBuilder},
		{"nAddFontVariationToBuilder", "(JIF)V", (void*)PaintGlue::addFontVariationToBuilder},
		{"nSetFontVariationOverride", "(JJ)V", (void*)PaintGlue::setFontVariationOverride},
		};

		int register_android_graphics_Paint(JNIEnv* env) {