Introduce new Typeface.Builder2 for creating Typeface from FontFamily (3c3e13fa) · Commits · e / os / android_frameworks_base

api/current.txt

+8 −0

Original line number	Diff line number	Diff line
		@@ -14571,6 +14571,14 @@ package android.graphics {
		method public android.graphics.Typeface.Builder setWeight(int);
		}

		public static class Typeface.CustomFallbackBuilder {
		ctor public Typeface.CustomFallbackBuilder(android.graphics.fonts.FontFamily);
		method public android.graphics.Typeface build();
		method public android.graphics.Typeface.CustomFallbackBuilder setFallback(java.lang.String);
		method public android.graphics.Typeface.CustomFallbackBuilder setItalic(boolean);
		method public android.graphics.Typeface.CustomFallbackBuilder setWeight(int);
		}

		public class Xfermode {
		ctor public Xfermode();
		}

graphics/java/android/graphics/Typeface.java

+122 −0

Original line number	Diff line number	Diff line
		@@ -672,6 +672,128 @@ public class Typeface {
		}
		}

		/**
		* A builder class for creating new Typeface instance.
		*
		* <p>
		* Examples,
		* 1) Create Typeface from single ttf file.
		* <pre>
		* <code>
		* Font font = new Font.Builder("your_font_file.ttf").build();
		* FontFamily family = new FontFamily.Builder(font).build();
		* Typeface typeface = new Typeface.CustomFallbackBuilder(family).build();
		* </code>
		* </pre>
		*
		* 2) Create Typeface from multiple font files and select bold style by default.
		* <pre>
		* <code>
		* Font regularFont = new Font.Builder("regular.ttf").build();
		* Font boldFont = new Font.Builder("bold.ttf").build();
		* FontFamily family = new FontFamily.Builder(regularFont)
		* .addFont(boldFont).build();
		* Typeface typeface = new Typeface.CustomFallbackBuilder(family)
		* .setWeight(Font.FONT_WEIGHT_BOLD) // Set bold style as the default style.
		* // If the font family doesn't have bold style font,
		* // system will select the closest font.
		* .build();
		* </code>
		* </pre>
		*
		* 3) Create Typeface from single ttf file and if that font does not have glyph for the
		* characters, use "serif" font family instead.
		* <pre>
		* <code>
		* Font font = new Font.Builder("your_font_file.ttf").build();
		* FontFamily family = new FontFamily.Builder(font).build();
		* Typeface typeface = new Typeface.CustomFallbackBuilder(family)
		* .setFallback("serif") // Set serif font family as the fallback.
		* .build();
		* </code>
		* </pre>
		* </p>
		*/
		public static class CustomFallbackBuilder {
		// TODO: Remove package modifier once android.graphics.FontFamily is deprecated.
		private final android.graphics.fonts.FontFamily mFamily;
		private String mFallbackName = null;
		private @IntRange(from = 0, to = 1000) int mWeight = 400;
		private boolean mItalic = false;

		/**
		* Constructs a builder with a font family.
		*
		* @param family a family object
		*/
		// TODO: Remove package modifier once android.graphics.FontFamily is deprecated.
		public CustomFallbackBuilder(@NonNull android.graphics.fonts.FontFamily family) {
		Preconditions.checkNotNull(family);
		mFamily = family;
		}

		/**
		* Sets a system fallback by name.
		*
		* @param familyName a family name to be used for fallback if the provided fonts can not be
		* used
		*/
		public CustomFallbackBuilder setFallback(@NonNull String familyName) {
		Preconditions.checkNotNull(familyName);
		mFallbackName = familyName;
		return this;
		}

		/**
		* Sets a weight of the Typeface.
		*
		* If the font family doesn't have a font of given weight, system will select the closest
		* font from font family. For example, if a font family has fonts of 300 weight and 700
		* weight then setWeight(400) is called, system will select the font of 300 weight.
		*
		* @see Font#FONT_WEIGHT_THIN
		* @see Font#FONT_WEIGHT_EXTRA_LIGHT
		* @see Font#FONT_WEIGHT_LIGHT
		* @see Font#FONT_WEIGHT_NORMAL
		* @see Font#FONT_WEIGHT_MEDIUM
		* @see Font#FONT_WEIGHT_SEMI_BOLD
		* @see Font#FONT_WEIGHT_BOLD
		* @see Font#FONT_WEIGHT_EXTRA_BOLD
		* @see Font#FONT_WEIGHT_BLACK
		* @param weight a weight value
		*/
		public CustomFallbackBuilder setWeight(@IntRange(from = 0, to = 1000) int weight) {
		mWeight = weight;
		return this;
		}

		/**
		* Sets a italic style of the Typeface.
		*
		* @param italic true if italic, otherwise false
		*/
		public CustomFallbackBuilder setItalic(boolean italic) {
		mItalic = italic;
		return this;
		}

		/**
		* Create the Typeface based on the configured values.
		*
		* @return the Typeface object
		*/
		public Typeface build() {
		final android.graphics.fonts.FontFamily[] fallback =
		SystemFonts.getSystemFallback(mFallbackName);
		final long[] ptrArray = new long[fallback.length + 1];
		ptrArray[0] = mFamily.getNativePtr();
		for (int i = 0; i < fallback.length; ++i) {
		ptrArray[i + 1] = fallback[i].getNativePtr();
		}
		return new Typeface(nativeCreateFromArray(ptrArray, mWeight, mItalic ? 1 : 0));
		}
		}

		/**
		* Create a typeface object given a family name, and option style information.
		* If null is passed for the name, then the "default" font will be chosen.