Bold StyleSpan further for auto-bold am: 1a5de0a925 (c7713fea) · Commits · e / os / android_frameworks_base

core/java/android/text/style/StyleSpan.java

+45 −3

Original line number	Diff line number	Diff line
		@@ -17,8 +17,10 @@
		package android.text.style;

		import android.annotation.NonNull;
		import android.content.res.Configuration;
		import android.graphics.Paint;
		import android.graphics.Typeface;
		import android.graphics.fonts.FontStyle;
		import android.os.Parcel;
		import android.text.ParcelableSpan;
		import android.text.TextPaint;
		@@ -45,6 +47,7 @@ import android.text.TextUtils;
		public class StyleSpan extends MetricAffectingSpan implements ParcelableSpan {

		private final int mStyle;
		private final int mFontWeightAdjustment;

		/**
		* Creates a {@link StyleSpan} from a style.
		@@ -54,7 +57,24 @@ public class StyleSpan extends MetricAffectingSpan implements ParcelableSpan {
		* in {@link Typeface}.
		*/
		public StyleSpan(int style) {
		this(style, Configuration.FONT_WEIGHT_ADJUSTMENT_UNDEFINED);
		}

		/**
		* Creates a {@link StyleSpan} from a style and font weight adjustment.
		*
		* @param style An integer constant describing the style for this span. Examples
		* include bold, italic, and normal. Values are constants defined
		* in {@link Typeface}.
		* @param fontWeightAdjustment An integer describing the adjustment to be made to the font
		* weight.
		* @see Configuration#fontWeightAdjustment This is the adjustment in text font weight
		* that is used to reflect the current user's preference for increasing font weight.
		* @hide
		*/
		public StyleSpan(@Typeface.Style int style, int fontWeightAdjustment) {
		mStyle = style;
		mFontWeightAdjustment = fontWeightAdjustment;
		}

		/**
		@@ -64,6 +84,7 @@ public class StyleSpan extends MetricAffectingSpan implements ParcelableSpan {
		*/
		public StyleSpan(@NonNull Parcel src) {
		mStyle = src.readInt();
		mFontWeightAdjustment = src.readInt();
		}

		@Override
		@@ -91,6 +112,7 @@ public class StyleSpan extends MetricAffectingSpan implements ParcelableSpan {
		@Override
		public void writeToParcelInternal(@NonNull Parcel dest, int flags) {
		dest.writeInt(mStyle);
		dest.writeInt(mFontWeightAdjustment);
		}

		/**
		@@ -100,17 +122,25 @@ public class StyleSpan extends MetricAffectingSpan implements ParcelableSpan {
		return mStyle;
		}

		/**
		* Returns the font weight adjustment specified by this span.
		* @hide
		*/
		public int getFontWeightAdjustment() {
		return mFontWeightAdjustment;
		}

		@Override
		public void updateDrawState(TextPaint ds) {
		apply(ds, mStyle);
		apply(ds, mStyle, mFontWeightAdjustment);
		}

		@Override
		public void updateMeasureState(TextPaint paint) {
		apply(paint, mStyle);
		apply(paint, mStyle, mFontWeightAdjustment);
		}

		private static void apply(Paint paint, int style) {
		private static void apply(Paint paint, int style, int fontWeightAdjustment) {
		int oldStyle;

		Typeface old = paint.getTypeface();
		@@ -129,6 +159,18 @@ public class StyleSpan extends MetricAffectingSpan implements ParcelableSpan {
		tf = Typeface.create(old, want);
		}

		// Base typeface may already be bolded by auto bold. Bold further.
		if ((style & Typeface.BOLD) != 0) {
		if (fontWeightAdjustment != 0
		&& fontWeightAdjustment != Configuration.FONT_WEIGHT_ADJUSTMENT_UNDEFINED) {
		int newWeight = Math.min(
		Math.max(tf.getWeight() + fontWeightAdjustment, FontStyle.FONT_WEIGHT_MIN),
		FontStyle.FONT_WEIGHT_MAX);
		boolean italic = (want & Typeface.ITALIC) != 0;
		tf = Typeface.create(tf, newWeight, italic);
		}
		}

		int fake = want & ~tf.getStyle();

		if ((fake & Typeface.BOLD) != 0) {