| /* |
| * 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 com.android.ninepatch; |
| |
| import java.awt.Graphics2D; |
| import java.awt.image.BufferedImage; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| |
| /** |
| * Represents a 9-Patch bitmap. |
| * |
| * DO NOT CHANGE THIS API OR OLDER VERSIONS OF LAYOUTLIB WILL CRASH. |
| * |
| * This is a full representation of a NinePatch with both a {@link BufferedImage} and a |
| * {@link NinePatchChunk}. |
| * |
| * Newer versions of the Layoutlib will use only the {@link NinePatchChunk} as the default |
| * nine patch drawable references a normal Android bitmap which contains a BufferedImage |
| * through a Bitmap_Delegate. |
| * |
| */ |
| public class NinePatch { |
| public static final String EXTENSION_9PATCH = ".9.png"; |
| |
| private BufferedImage mImage; |
| private NinePatchChunk mChunk; |
| |
| public BufferedImage getImage() { |
| return mImage; |
| } |
| |
| public NinePatchChunk getChunk() { |
| return mChunk; |
| } |
| |
| /** |
| * LEGACY METHOD to run older versions of Android Layoutlib. |
| * ==== DO NOT CHANGE ==== |
| * |
| * Loads a 9 patch or regular bitmap. |
| * @param fileUrl the URL of the file to load. |
| * @param convert if <code>true</code>, non 9-patch bitmap will be converted into a 9 patch. |
| * If <code>false</code> and the bitmap is not a 9 patch, the method will return |
| * <code>null</code>. |
| * @return a {@link NinePatch} or <code>null</code>. |
| * @throws IOException |
| */ |
| public static NinePatch load(URL fileUrl, boolean convert) throws IOException { |
| BufferedImage image = null; |
| try { |
| image = GraphicsUtilities.loadCompatibleImage(fileUrl); |
| } catch (MalformedURLException e) { |
| // really this shouldn't be happening since we're not creating the URL manually. |
| return null; |
| } |
| |
| boolean is9Patch = fileUrl.getPath().toLowerCase().endsWith(EXTENSION_9PATCH); |
| |
| return load(image, is9Patch, convert); |
| } |
| |
| /** |
| * LEGACY METHOD to run older versions of Android Layoutlib. |
| * ==== DO NOT CHANGE ==== |
| * |
| * Loads a 9 patch or regular bitmap. |
| * @param stream the {@link InputStream} of the file to load. |
| * @param is9Patch whether the file represents a 9-patch |
| * @param convert if <code>true</code>, non 9-patch bitmap will be converted into a 9 patch. |
| * If <code>false</code> and the bitmap is not a 9 patch, the method will return |
| * <code>null</code>. |
| * @return a {@link NinePatch} or <code>null</code>. |
| * @throws IOException |
| */ |
| public static NinePatch load(InputStream stream, boolean is9Patch, boolean convert) |
| throws IOException { |
| BufferedImage image = null; |
| try { |
| image = GraphicsUtilities.loadCompatibleImage(stream); |
| } catch (MalformedURLException e) { |
| // really this shouldn't be happening since we're not creating the URL manually. |
| return null; |
| } |
| |
| return load(image, is9Patch, convert); |
| } |
| |
| /** |
| * LEGACY METHOD to run older versions of Android Layoutlib. |
| * ==== DO NOT CHANGE ==== |
| * |
| * Loads a 9 patch or regular bitmap. |
| * @param image the source {@link BufferedImage}. |
| * @param is9Patch whether the file represents a 9-patch |
| * @param convert if <code>true</code>, non 9-patch bitmap will be converted into a 9 patch. |
| * If <code>false</code> and the bitmap is not a 9 patch, the method will return |
| * <code>null</code>. |
| * @return a {@link NinePatch} or <code>null</code>. |
| * @throws IOException |
| */ |
| public static NinePatch load(BufferedImage image, boolean is9Patch, boolean convert) { |
| if (is9Patch == false) { |
| if (convert) { |
| image = convertTo9Patch(image); |
| } else { |
| return null; |
| } |
| } else { |
| ensure9Patch(image); |
| } |
| |
| return new NinePatch(image); |
| } |
| |
| /** |
| * LEGACY METHOD to run older versions of Android Layoutlib. |
| * ==== DO NOT CHANGE ==== |
| * |
| * @return |
| */ |
| public int getWidth() { |
| return mImage.getWidth(); |
| } |
| |
| /** |
| * LEGACY METHOD to run older versions of Android Layoutlib. |
| * ==== DO NOT CHANGE ==== |
| * |
| * @return |
| */ |
| public int getHeight() { |
| return mImage.getHeight(); |
| } |
| |
| /** |
| * LEGACY METHOD to run older versions of Android Layoutlib. |
| * ==== DO NOT CHANGE ==== |
| * |
| * @param padding array of left, top, right, bottom padding |
| * @return |
| */ |
| public boolean getPadding(int[] padding) { |
| mChunk.getPadding(padding); |
| return true; |
| } |
| |
| |
| /** |
| * LEGACY METHOD to run older versions of Android Layoutlib. |
| * ==== DO NOT CHANGE ==== |
| * |
| * @param graphics2D |
| * @param x |
| * @param y |
| * @param scaledWidth |
| * @param scaledHeight |
| */ |
| public void draw(Graphics2D graphics2D, int x, int y, int scaledWidth, int scaledHeight) { |
| mChunk.draw(mImage, graphics2D, x, y, scaledWidth, scaledHeight, 0 , 0); |
| } |
| |
| private NinePatch(BufferedImage image) { |
| mChunk = NinePatchChunk.create(image); |
| mImage = extractBitmapContent(image); |
| } |
| |
| private static void ensure9Patch(BufferedImage image) { |
| int width = image.getWidth(); |
| int height = image.getHeight(); |
| for (int i = 0; i < width; i++) { |
| int pixel = image.getRGB(i, 0); |
| if (pixel != 0 && pixel != 0xFF000000) { |
| image.setRGB(i, 0, 0); |
| } |
| pixel = image.getRGB(i, height - 1); |
| if (pixel != 0 && pixel != 0xFF000000) { |
| image.setRGB(i, height - 1, 0); |
| } |
| } |
| for (int i = 0; i < height; i++) { |
| int pixel = image.getRGB(0, i); |
| if (pixel != 0 && pixel != 0xFF000000) { |
| image.setRGB(0, i, 0); |
| } |
| pixel = image.getRGB(width - 1, i); |
| if (pixel != 0 && pixel != 0xFF000000) { |
| image.setRGB(width - 1, i, 0); |
| } |
| } |
| } |
| |
| private static BufferedImage convertTo9Patch(BufferedImage image) { |
| BufferedImage buffer = GraphicsUtilities.createTranslucentCompatibleImage( |
| image.getWidth() + 2, image.getHeight() + 2); |
| |
| Graphics2D g2 = buffer.createGraphics(); |
| g2.drawImage(image, 1, 1, null); |
| g2.dispose(); |
| |
| return buffer; |
| } |
| |
| private BufferedImage extractBitmapContent(BufferedImage image) { |
| return image.getSubimage(1, 1, image.getWidth() - 2, image.getHeight() - 2); |
| } |
| |
| } |