1 /* 2 * Copyright (C) 2012 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.gallery3d.filtershow.filters; 18 19 import android.content.res.Resources; 20 import android.graphics.Bitmap; 21 import android.graphics.BitmapFactory; 22 import android.graphics.Canvas; 23 import android.graphics.Rect; 24 import android.graphics.drawable.BitmapDrawable; 25 import android.graphics.drawable.Drawable; 26 27 import java.util.HashMap; 28 29 public class ImageFilterBorder extends ImageFilter { 30 private static final float NINEPATCH_ICON_SCALING = 10; 31 private static final float BITMAP_ICON_SCALING = 1 / 3.0f; 32 private FilterImageBorderRepresentation mParameters = null; 33 private Resources mResources = null; 34 35 private HashMap<Integer, Drawable> mDrawables = new HashMap<Integer, Drawable>(); 36 37 public ImageFilterBorder() { 38 mName = "Border"; 39 } 40 41 public void useRepresentation(FilterRepresentation representation) { 42 FilterImageBorderRepresentation parameters = (FilterImageBorderRepresentation) representation; 43 mParameters = parameters; 44 } 45 46 public FilterImageBorderRepresentation getParameters() { 47 return mParameters; 48 } 49 50 public void freeResources() { 51 mDrawables.clear(); 52 } 53 54 public Bitmap applyHelper(Bitmap bitmap, float scale1, float scale2 ) { 55 int w = bitmap.getWidth(); 56 int h = bitmap.getHeight(); 57 Rect bounds = new Rect(0, 0, (int) (w * scale1), (int) (h * scale1)); 58 Canvas canvas = new Canvas(bitmap); 59 canvas.scale(scale2, scale2); 60 Drawable drawable = getDrawable(getParameters().getDrawableResource()); 61 drawable.setBounds(bounds); 62 drawable.draw(canvas); 63 return bitmap; 64 } 65 66 @Override 67 public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { 68 if (getParameters() == null || getParameters().getDrawableResource() == 0) { 69 return bitmap; 70 } 71 float scale2 = scaleFactor * 2.0f; 72 float scale1 = 1 / scale2; 73 return applyHelper(bitmap, scale1, scale2); 74 } 75 76 public void setResources(Resources resources) { 77 if (mResources != resources) { 78 mResources = resources; 79 mDrawables.clear(); 80 } 81 } 82 83 public Drawable getDrawable(int rsc) { 84 Drawable drawable = mDrawables.get(rsc); 85 if (drawable == null && mResources != null && rsc != 0) { 86 drawable = new BitmapDrawable(mResources, BitmapFactory.decodeResource(mResources, rsc)); 87 mDrawables.put(rsc, drawable); 88 } 89 return drawable; 90 } 91 92 } 93