/*
* Copyright (C) 2011 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 com.android.assetstudiolib;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.util.HashMap;
import java.util.Map;
/**
* A {@link GraphicGenerator} that generates Android "launcher" icons.
*/
public class LauncherIconGenerator extends GraphicGenerator {
private static final Rectangle IMAGE_SIZE_MDPI = new Rectangle(0, 0, 48, 48);
private static final Rectangle TARGET_RECT_MDPI = new Rectangle(2, 2, 44, 44);
@Override
public BufferedImage generate(GraphicGeneratorContext context, Options options) {
LauncherOptions launcherOptions = (LauncherOptions) options;
String density;
if (launcherOptions.isWebGraphic) {
density = "web";
} else {
density = launcherOptions.density.getResourceValue();
}
String shape = launcherOptions.shape.id;
BufferedImage mBackImage = null;
BufferedImage mForeImage = null;
BufferedImage mMaskImage = null;
if (launcherOptions.shape != Shape.NONE) {
mBackImage = context.loadImageResource("/images/launcher_stencil/"
+ shape + "/" + density + "/back.png");
mForeImage = context.loadImageResource("/images/launcher_stencil/"
+ shape + "/" + density + "/" + launcherOptions.style.id + ".png");
mMaskImage = context.loadImageResource("/images/launcher_stencil/"
+ shape + "/" + density + "/mask.png");
}
float scaleFactor = GraphicGenerator.getMdpiScaleFactor(launcherOptions.density);
if (launcherOptions.isWebGraphic) {
// Target size for the web graphic is 512
scaleFactor = 512 / (float) IMAGE_SIZE_MDPI.height;
}
Rectangle imageRect = Util.scaleRectangle(IMAGE_SIZE_MDPI, scaleFactor);
Rectangle targetRect = Util.scaleRectangle(TARGET_RECT_MDPI, scaleFactor);
BufferedImage outImage = Util.newArgbBufferedImage(imageRect.width, imageRect.height);
Graphics2D g = (Graphics2D) outImage.getGraphics();
if (mBackImage != null) {
g.drawImage(mBackImage, 0, 0, null);
}
BufferedImage tempImage = Util.newArgbBufferedImage(imageRect.width, imageRect.height);
Graphics2D g2 = (Graphics2D) tempImage.getGraphics();
if (mMaskImage != null) {
g2.drawImage(mMaskImage, 0, 0, null);
g2.setComposite(AlphaComposite.SrcAtop);
g2.setPaint(new Color(launcherOptions.backgroundColor));
g2.fillRect(0, 0, imageRect.width, imageRect.height);
}
if (launcherOptions.crop) {
Util.drawCenterCrop(g2, launcherOptions.sourceImage, targetRect);
} else {
Util.drawCenterInside(g2, launcherOptions.sourceImage, targetRect);
}
g.drawImage(tempImage, 0, 0, null);
if (mForeImage != null) {
g.drawImage(mForeImage, 0, 0, null);
}
g.dispose();
g2.dispose();
return outImage;
}
@Override
public void generate(String category, Map<String, Map<String, BufferedImage>> categoryMap,
GraphicGeneratorContext context, Options options, String name) {
LauncherOptions launcherOptions = (LauncherOptions) options;
boolean generateWebImage = launcherOptions.isWebGraphic;
launcherOptions.isWebGraphic = false;
super.generate(category, categoryMap, context, options, name);
if (generateWebImage) {
launcherOptions.isWebGraphic = true;
BufferedImage image = generate(context, options);
if (image != null) {
Map<String, BufferedImage> imageMap = new HashMap<String, BufferedImage>();
categoryMap.put("Web", imageMap);
imageMap.put(getIconPath(options, name), image);
}
}
}
@Override
protected String getIconPath(Options options, String name) {
if (((LauncherOptions) options).isWebGraphic) {
return name + "-web.png"; // Store at the root of the project
}
return super.getIconPath(options, name);
}
/** Options specific to generating launcher icons */
public static class LauncherOptions extends GraphicGenerator.Options {
/** Background color, as an RRGGBB packed integer */
public int backgroundColor = 0;
/** Whether the image should be cropped or not */
public boolean crop = true;
/** The shape to use for the background */
public Shape shape = Shape.SQUARE;
/** The effects to apply to the foreground */
public Style style = Style.SIMPLE;
/**
* Whether a web graphic should be generated (will ignore normal density
* setting). The {@link #generate(GraphicGeneratorContext, Options)}
* method will use this to decide whether to generate a normal density
* icon or a high res web image. The
* {@link GraphicGenerator#generate(String, Map, GraphicGeneratorContext, Options, String)}
* method will use this flag to determine whether it should include a
* web graphic in its iteration.
*/
public boolean isWebGraphic;
}
}