fb95699364
With ttc and gx variation fonts, it is now possible and common that a
number of fonts will use the same font file for data but with different
parameters. In the current code each font will map the font file data,
taking up an unecessary amount of virtual address space and is
inefficient with respect to memory management (like the tlb). This CL
deduplicates these file mappings so that a given font file will only be
mapped into memory once.
DO NOT MERGE
Change-Id: I5ca69f963a434c72ec4028402ecbf9e0f0ee7148
(cherry picked from commit fffcf0a31f)
86 lines
2.6 KiB
Java
86 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.nio.ByteBuffer;
|
|
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(ByteBuffer font, int ttcIndex, List<FontListParser.Axis> axes,
|
|
int weight, boolean style) {
|
|
return nAddFontWeightStyle(mNativePtr, font, 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, ByteBuffer font,
|
|
int ttcIndex, List<FontListParser.Axis> listOfAxis,
|
|
int weight, boolean isItalic);
|
|
private static native boolean nAddFontFromAsset(long nativeFamily, AssetManager mgr,
|
|
String path);
|
|
}
|