create Icon Thumbnail
/*
* Copyright (C) 2008 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 org.jsharkey.grouphome;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.PaintDrawable;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.Bitmap;
import android.graphics.PixelFormat;
import android.graphics.Canvas;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.Paint;
import android.graphics.Rect;
import android.content.res.Resources;
import android.content.Context;
class Utilities {
public static Drawable createIconThumbnail(Drawable icon, int size) {
// code adapted from packages/apps/Launcher
int sourceWidth = icon.getIntrinsicWidth(),
sourceHeight = icon.getIntrinsicHeight();
int destWidth = size,
destHeight = size;
// only resize if actually needed
if(sourceWidth != destWidth || sourceHeight != destHeight) {
float ratio = (float) sourceWidth / sourceHeight;
if(sourceWidth > sourceHeight) {
destHeight = (int) (destWidth / ratio);
} else if (sourceHeight > sourceWidth) {
destWidth = (int) (destHeight * ratio);
}
final Bitmap thumb = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(thumb);
icon.setBounds((size - destWidth) / 2, (size - destHeight) / 2, destWidth, destHeight);
icon.draw(canvas);
icon = new BitmapDrawable(thumb);
}
return icon;
}
}