296bf8c55a
Minikin is changing its approach to table access to use HarfBuzz to access the tables, based on raw font data, rather than calling the MinikinFont::GetTable() virtual method. This patch provides raw access to the font data to make this work. There's a bit of plumbing to make sure fonts get a pointer to the raw data as well. Bug: 27860101 Change-Id: I638e18cf363644bf22fbc9fb9b3358a9e731087f
101 lines
3.2 KiB
Java
101 lines
3.2 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics;
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import android.content.res.AssetManager;
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import android.util.Log;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.channels.FileChannel;
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import java.util.List;
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/**
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* A family of typefaces with different styles.
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*
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* @hide
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*/
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public class FontFamily {
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private static String TAG = "FontFamily";
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/**
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* @hide
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*/
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public long mNativePtr;
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public FontFamily() {
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mNativePtr = nCreateFamily(null, 0);
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if (mNativePtr == 0) {
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throw new IllegalStateException("error creating native FontFamily");
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}
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}
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public FontFamily(String lang, String variant) {
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int varEnum = 0;
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if ("compact".equals(variant)) {
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varEnum = 1;
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} else if ("elegant".equals(variant)) {
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varEnum = 2;
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}
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mNativePtr = nCreateFamily(lang, varEnum);
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if (mNativePtr == 0) {
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throw new IllegalStateException("error creating native FontFamily");
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}
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}
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@Override
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protected void finalize() throws Throwable {
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try {
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nUnrefFamily(mNativePtr);
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} finally {
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super.finalize();
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}
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}
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public boolean addFont(String path, int ttcIndex) {
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try (FileInputStream file = new FileInputStream(path)) {
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FileChannel fileChannel = file.getChannel();
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long fontSize = fileChannel.size();
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ByteBuffer fontBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fontSize);
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return nAddFont(mNativePtr, fontBuffer, ttcIndex);
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} catch (IOException e) {
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Log.e(TAG, "Error mapping font file " + path);
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return false;
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}
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}
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public boolean addFontWeightStyle(ByteBuffer font, int ttcIndex, List<FontListParser.Axis> axes,
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int weight, boolean style) {
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return nAddFontWeightStyle(mNativePtr, font, ttcIndex, axes, weight, style);
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}
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public boolean addFontFromAsset(AssetManager mgr, String path) {
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return nAddFontFromAsset(mNativePtr, mgr, path);
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}
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private static native long nCreateFamily(String lang, int variant);
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private static native void nUnrefFamily(long nativePtr);
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private static native boolean nAddFont(long nativeFamily, ByteBuffer font, int ttcIndex);
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private static native boolean nAddFontWeightStyle(long nativeFamily, ByteBuffer font,
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int ttcIndex, List<FontListParser.Axis> listOfAxis,
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int weight, boolean isItalic);
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private static native boolean nAddFontFromAsset(long nativeFamily, AssetManager mgr,
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String path);
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}
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