diff options
Diffstat (limited to 'sdk/src/java/org/cyanogenmod/internal/util/ImageUtils.java')
| -rw-r--r-- | sdk/src/java/org/cyanogenmod/internal/util/ImageUtils.java | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/sdk/src/java/org/cyanogenmod/internal/util/ImageUtils.java b/sdk/src/java/org/cyanogenmod/internal/util/ImageUtils.java new file mode 100644 index 0000000..c67c23c --- /dev/null +++ b/sdk/src/java/org/cyanogenmod/internal/util/ImageUtils.java @@ -0,0 +1,332 @@ +/* + * Copyright (C) 2013-2014 The CyanogenMod 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 org.cyanogenmod.internal.util; + +import android.app.WallpaperManager; +import android.content.Context; +import android.content.res.AssetManager; +import android.database.Cursor; +import android.graphics.Bitmap; +import android.graphics.BitmapFactory; +import android.graphics.Point; +import android.net.Uri; +import android.text.TextUtils; +import android.util.Log; +import android.webkit.URLUtil; +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.InputStream; + +import cyanogenmod.providers.ThemesContract.PreviewColumns; +import cyanogenmod.providers.ThemesContract.ThemesColumns; + +import libcore.io.IoUtils; + +public class ImageUtils { + private static final String TAG = ImageUtils.class.getSimpleName(); + + private static final String ASSET_URI_PREFIX = "file:///android_asset/"; + private static final int DEFAULT_IMG_QUALITY = 100; + + /** + * Gets the Width and Height of the image + * + * @param inputStream The input stream of the image + * + * @return A point structure that holds the Width and Height (x and y)/*" + */ + public static Point getImageDimension(InputStream inputStream) { + if (inputStream == null) { + throw new IllegalArgumentException("'inputStream' cannot be null!"); + } + BitmapFactory.Options options = new BitmapFactory.Options(); + options.inJustDecodeBounds = true; + BitmapFactory.decodeStream(inputStream, null, options); + Point point = new Point(options.outWidth,options.outHeight); + return point; + } + + /** + * Crops the input image and returns a new InputStream of the cropped area + * + * @param inputStream The input stream of the image + * @param imageWidth Width of the input image + * @param imageHeight Height of the input image + * @param inputStream Desired Width + * @param inputStream Desired Width + * + * @return a new InputStream of the cropped area/*" + */ + public static InputStream cropImage(InputStream inputStream, int imageWidth, int imageHeight, + int outWidth, int outHeight) throws IllegalArgumentException { + if (inputStream == null){ + throw new IllegalArgumentException("inputStream cannot be null"); + } + + if (imageWidth <= 0 || imageHeight <= 0) { + throw new IllegalArgumentException( + String.format("imageWidth and imageHeight must be > 0: imageWidth=%d" + + " imageHeight=%d", imageWidth, imageHeight)); + } + + if (outWidth <= 0 || outHeight <= 0) { + throw new IllegalArgumentException( + String.format("outWidth and outHeight must be > 0: outWidth=%d" + + " outHeight=%d", imageWidth, outHeight)); + } + + int scaleDownSampleSize = Math.min(imageWidth / outWidth, imageHeight / outHeight); + if (scaleDownSampleSize > 0) { + imageWidth /= scaleDownSampleSize; + imageHeight /= scaleDownSampleSize; + } else { + float ratio = (float) outWidth / outHeight; + if (imageWidth < imageHeight * ratio) { + outWidth = imageWidth; + outHeight = (int) (outWidth / ratio); + } else { + outHeight = imageHeight; + outWidth = (int) (outHeight * ratio); + } + } + int left = (imageWidth - outWidth) / 2; + int top = (imageHeight - outHeight) / 2; + InputStream compressed = null; + try { + BitmapFactory.Options options = new BitmapFactory.Options(); + if (scaleDownSampleSize > 1) { + options.inSampleSize = scaleDownSampleSize; + } + Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, options); + if (bitmap == null) { + return null; + } + Bitmap cropped = Bitmap.createBitmap(bitmap, left, top, outWidth, outHeight); + ByteArrayOutputStream tmpOut = new ByteArrayOutputStream(2048); + if (cropped.compress(Bitmap.CompressFormat.PNG, DEFAULT_IMG_QUALITY, tmpOut)) { + byte[] outByteArray = tmpOut.toByteArray(); + compressed = new ByteArrayInputStream(outByteArray); + } + } catch (Exception e) { + Log.e(TAG, "Exception " + e); + } + return compressed; + } + + /** + * Crops the lock screen image and returns a new InputStream of the cropped area + * + * @param pkgName Name of the theme package + * @param context The context + * + * @return a new InputStream of the cropped image/*" + */ + public static InputStream getCroppedKeyguardStream(String pkgName, Context context) + throws IllegalArgumentException { + if (TextUtils.isEmpty(pkgName)) { + throw new IllegalArgumentException("'pkgName' cannot be null or empty!"); + } + if (context == null) { + throw new IllegalArgumentException("'context' cannot be null!"); + } + + InputStream cropped = null; + InputStream stream = null; + try { + stream = getOriginalKeyguardStream(pkgName, context); + if (stream == null) { + return null; + } + Point point = getImageDimension(stream); + IoUtils.closeQuietly(stream); + if (point == null || point.x == 0 || point.y == 0) { + return null; + } + WallpaperManager wm = WallpaperManager.getInstance(context); + int outWidth = wm.getDesiredMinimumWidth(); + int outHeight = wm.getDesiredMinimumHeight(); + stream = getOriginalKeyguardStream(pkgName, context); + if (stream == null) { + return null; + } + cropped = cropImage(stream, point.x, point.y, outWidth, outHeight); + } catch (Exception e) { + Log.e(TAG, "Exception " + e); + } finally { + IoUtils.closeQuietly(stream); + } + return cropped; + } + + /** + * Crops the wallpaper image and returns a new InputStream of the cropped area + * + * @param pkgName Name of the theme package + * @param context The context + * + * @return a new InputStream of the cropped image/*" + */ + public static InputStream getCroppedWallpaperStream(String pkgName, long wallpaperId, + Context context) { + if (TextUtils.isEmpty(pkgName)) { + throw new IllegalArgumentException("'pkgName' cannot be null or empty!"); + } + if (context == null) { + throw new IllegalArgumentException("'context' cannot be null!"); + } + + InputStream cropped = null; + InputStream stream = null; + try { + stream = getOriginalWallpaperStream(pkgName, wallpaperId, context); + if (stream == null) { + return null; + } + Point point = getImageDimension(stream); + IoUtils.closeQuietly(stream); + if (point == null || point.x == 0 || point.y == 0) { + return null; + } + WallpaperManager wm = WallpaperManager.getInstance(context); + int outWidth = wm.getDesiredMinimumWidth(); + int outHeight = wm.getDesiredMinimumHeight(); + stream = getOriginalWallpaperStream(pkgName, wallpaperId, context); + if (stream == null) { + return null; + } + cropped = cropImage(stream, point.x, point.y, outWidth, outHeight); + } catch (Exception e) { + Log.e(TAG, "Exception " + e); + } finally { + IoUtils.closeQuietly(stream); + } + return cropped; + } + + private static InputStream getOriginalKeyguardStream(String pkgName, Context context) { + if (TextUtils.isEmpty(pkgName) || context == null) { + return null; + } + + InputStream inputStream = null; + try { + //Get input WP stream from the theme + Context themeCtx = context.createPackageContext(pkgName, + Context.CONTEXT_IGNORE_SECURITY); + AssetManager assetManager = themeCtx.getAssets(); + String wpPath = ThemeUtils.getLockscreenWallpaperPath(assetManager); + if (wpPath == null) { + Log.w(TAG, "Not setting lockscreen wp because wallpaper file was not found."); + } else { + inputStream = ThemeUtils.getInputStreamFromAsset(themeCtx, + ASSET_URI_PREFIX + wpPath); + } + } catch (Exception e) { + Log.e(TAG, "There was an error setting lockscreen wp for pkg " + pkgName, e); + } + return inputStream; + } + + private static InputStream getOriginalWallpaperStream(String pkgName, long componentId, + Context context) { + String wpPath; + if (TextUtils.isEmpty(pkgName) || context == null) { + return null; + } + + InputStream inputStream = null; + String selection = ThemesColumns.PKG_NAME + "= ?"; + String[] selectionArgs = {pkgName}; + Cursor c = context.getContentResolver().query(ThemesColumns.CONTENT_URI, + null, selection, + selectionArgs, null); + if (c == null || c.getCount() < 1) { + if (c != null) c.close(); + return null; + } else { + c.moveToFirst(); + } + + try { + Context themeContext = context.createPackageContext(pkgName, + Context.CONTEXT_IGNORE_SECURITY); + boolean isLegacyTheme = c.getInt( + c.getColumnIndex(ThemesColumns.IS_LEGACY_THEME)) == 1; + String wallpaper = c.getString( + c.getColumnIndex(ThemesColumns.WALLPAPER_URI)); + if (wallpaper != null) { + if (URLUtil.isAssetUrl(wallpaper)) { + inputStream = ThemeUtils.getInputStreamFromAsset(themeContext, wallpaper); + } else { + inputStream = context.getContentResolver().openInputStream( + Uri.parse(wallpaper)); + } + } else { + // try and get the wallpaper directly from the apk if the URI was null + Context themeCtx = context.createPackageContext(pkgName, + Context.CONTEXT_IGNORE_SECURITY); + AssetManager assetManager = themeCtx.getAssets(); + wpPath = queryWpPathFromComponentId(context, pkgName, componentId); + if (wpPath == null) wpPath = ThemeUtils.getWallpaperPath(assetManager); + if (wpPath == null) { + Log.e(TAG, "Not setting wp because wallpaper file was not found."); + } else { + inputStream = ThemeUtils.getInputStreamFromAsset(themeCtx, + ASSET_URI_PREFIX + wpPath); + } + } + } catch (Exception e) { + Log.e(TAG, "getWallpaperStream: " + e); + } finally { + c.close(); + } + + return inputStream; + } + + private static String queryWpPathFromComponentId(Context context, String pkgName, + long componentId) { + String wpPath = null; + String[] projection = new String[] { PreviewColumns.COL_VALUE }; + String selection = ThemesColumns.PKG_NAME + "=? AND " + + PreviewColumns.COMPONENT_ID + "=? AND " + + PreviewColumns.COL_KEY + "=?"; + String[] selectionArgs = new String[] { + pkgName, + Long.toString(componentId), + PreviewColumns.WALLPAPER_FULL + }; + + Cursor c = context.getContentResolver() + .query(PreviewColumns.COMPONENTS_URI, + projection, selection, selectionArgs, null); + if (c != null) { + try { + if (c.moveToFirst()) { + int valIdx = c.getColumnIndex(PreviewColumns.COL_VALUE); + wpPath = c.getString(valIdx); + } + } catch(Exception e) { + Log.e(TAG, "Could not get wallpaper path", e); + } finally { + c.close(); + } + } + return wpPath; + } +} + |