| /* |
| * Copyright (C) 2017 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.text; |
| |
| import android.annotation.NonNull; |
| import android.content.Context; |
| import android.content.res.AssetManager; |
| import android.graphics.FontFamily; |
| import android.graphics.Typeface; |
| import android.support.test.InstrumentationRegistry; |
| import android.util.ArrayMap; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.charset.Charset; |
| import java.nio.file.Files; |
| import java.nio.file.StandardCopyOption; |
| |
| public class FontFallbackSetup implements AutoCloseable { |
| private final String[] mTestFontFiles; |
| private final String mXml; |
| private final String mTestFontsDir; |
| final ArrayMap<String, Typeface> mFontMap = new ArrayMap<>(); |
| |
| public FontFallbackSetup(@NonNull String testSubDir, @NonNull String[] testFontFiles, |
| @NonNull String xml) { |
| mTestFontFiles = testFontFiles; |
| mXml = xml; |
| |
| final Context targetCtx = InstrumentationRegistry.getInstrumentation().getTargetContext(); |
| final File cacheDir = new File(targetCtx.getCacheDir(), testSubDir); |
| if (!cacheDir.isDirectory()) { |
| final boolean dirsCreated = cacheDir.mkdirs(); |
| if (!dirsCreated) { |
| throw new RuntimeException("Creating test directories for fonts failed."); |
| } |
| } |
| mTestFontsDir = cacheDir.getAbsolutePath() + "/"; |
| |
| final String testFontsXml = new File(mTestFontsDir, "fonts.xml").getAbsolutePath(); |
| final AssetManager am = |
| InstrumentationRegistry.getInstrumentation().getContext().getAssets(); |
| for (String fontFile : mTestFontFiles) { |
| final String sourceInAsset = "fonts/" + fontFile; |
| final File outInCache = new File(mTestFontsDir, fontFile); |
| try (InputStream is = am.open(sourceInAsset)) { |
| Files.copy(is, outInCache.toPath(), StandardCopyOption.REPLACE_EXISTING); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| try (FileOutputStream fos = new FileOutputStream(testFontsXml)) { |
| fos.write(mXml.getBytes(Charset.forName("UTF-8"))); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| |
| final ArrayMap<String, FontFamily[]> fallbackMap = new ArrayMap<>(); |
| Typeface.buildSystemFallback(testFontsXml, mTestFontsDir, mFontMap, fallbackMap); |
| } |
| |
| @NonNull |
| public Typeface getTypefaceFor(@NonNull String fontName) { |
| return mFontMap.get(fontName); |
| } |
| |
| @NonNull |
| public TextPaint getPaintFor(@NonNull String fontName) { |
| final TextPaint paint = new TextPaint(); |
| paint.setTypeface(getTypefaceFor(fontName)); |
| return paint; |
| } |
| |
| @Override |
| public void close() { |
| for (String fontFile : mTestFontFiles) { |
| final File outInCache = new File(mTestFontsDir, fontFile); |
| outInCache.delete(); |
| } |
| } |
| } |