Files
frameworks_base/graphics/java/android/graphics/FontFamily.java
Ben Wagner a87b07d7fa Add support for gx font variation axes.
This adds an 'axis' child element to the 'font' element. The 'axis'
element has attributes 'tag' (a four byte identifier) and 'stylevalue'
(a float value) to the parser. This also modifies reading the font file
name in a backwards compatible fashion by using only the direct #text
children of the 'font' element. (Both the Minikin and Skia parsers now
allow the font file name on a separate line in the fonts.xml file).

This information is then passed through to Skia in order to select the
desired variation. The Skia parser already parses this way and has for
some time, so Chrome and WebView can already read this format.

Change-Id: I15623fe864fa92b2bf0705af5e389daedfb77e5c
(cherry picked from commit b8e367fb74)
2016-02-12 16:28:35 +00:00

85 lines
2.6 KiB
Java

/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.graphics;
import android.content.res.AssetManager;
import java.util.List;
/**
* A family of typefaces with different styles.
*
* @hide
*/
public class FontFamily {
/**
* @hide
*/
public long mNativePtr;
public FontFamily() {
mNativePtr = nCreateFamily(null, 0);
if (mNativePtr == 0) {
throw new IllegalStateException("error creating native FontFamily");
}
}
public FontFamily(String lang, String variant) {
int varEnum = 0;
if ("compact".equals(variant)) {
varEnum = 1;
} else if ("elegant".equals(variant)) {
varEnum = 2;
}
mNativePtr = nCreateFamily(lang, varEnum);
if (mNativePtr == 0) {
throw new IllegalStateException("error creating native FontFamily");
}
}
@Override
protected void finalize() throws Throwable {
try {
nUnrefFamily(mNativePtr);
} finally {
super.finalize();
}
}
public boolean addFont(String path, int ttcIndex) {
return nAddFont(mNativePtr, path, ttcIndex);
}
public boolean addFontWeightStyle(String path, int ttcIndex, List<FontListParser.Axis> axes,
int weight, boolean style) {
return nAddFontWeightStyle(mNativePtr, path, ttcIndex, axes, weight, style);
}
public boolean addFontFromAsset(AssetManager mgr, String path) {
return nAddFontFromAsset(mNativePtr, mgr, path);
}
private static native long nCreateFamily(String lang, int variant);
private static native void nUnrefFamily(long nativePtr);
private static native boolean nAddFont(long nativeFamily, String path, int ttcIndex);
private static native boolean nAddFontWeightStyle(long nativeFamily, String path,
int ttcIndex, List<FontListParser.Axis> listOfAxis,
int weight, boolean isItalic);
private static native boolean nAddFontFromAsset(long nativeFamily, AssetManager mgr,
String path);
}