| /* |
| * Copyright (C) 2012 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.gallery3d.filtershow.filters; |
| |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Canvas; |
| import android.graphics.Rect; |
| import android.graphics.drawable.BitmapDrawable; |
| import android.graphics.drawable.Drawable; |
| |
| import java.util.HashMap; |
| |
| public class ImageFilterBorder extends ImageFilter { |
| private static final float NINEPATCH_ICON_SCALING = 10; |
| private static final float BITMAP_ICON_SCALING = 1 / 3.0f; |
| private FilterImageBorderRepresentation mParameters = null; |
| private Resources mResources = null; |
| |
| private HashMap<Integer, Drawable> mDrawables = new HashMap<Integer, Drawable>(); |
| |
| public ImageFilterBorder() { |
| mName = "Border"; |
| } |
| |
| public void useRepresentation(FilterRepresentation representation) { |
| FilterImageBorderRepresentation parameters = (FilterImageBorderRepresentation) representation; |
| mParameters = parameters; |
| } |
| |
| public FilterImageBorderRepresentation getParameters() { |
| return mParameters; |
| } |
| |
| public void freeResources() { |
| mDrawables.clear(); |
| } |
| |
| public Bitmap applyHelper(Bitmap bitmap, float scale1, float scale2 ) { |
| int w = bitmap.getWidth(); |
| int h = bitmap.getHeight(); |
| Rect bounds = new Rect(0, 0, (int) (w * scale1), (int) (h * scale1)); |
| Canvas canvas = new Canvas(bitmap); |
| canvas.scale(scale2, scale2); |
| Drawable drawable = getDrawable(getParameters().getDrawableResource()); |
| drawable.setBounds(bounds); |
| drawable.draw(canvas); |
| return bitmap; |
| } |
| |
| @Override |
| public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { |
| if (getParameters() == null || getParameters().getDrawableResource() == 0) { |
| return bitmap; |
| } |
| float scale2 = scaleFactor * 2.0f; |
| float scale1 = 1 / scale2; |
| return applyHelper(bitmap, scale1, scale2); |
| } |
| |
| public void setResources(Resources resources) { |
| if (mResources != resources) { |
| mResources = resources; |
| mDrawables.clear(); |
| } |
| } |
| |
| public Drawable getDrawable(int rsc) { |
| Drawable drawable = mDrawables.get(rsc); |
| if (drawable == null && mResources != null && rsc != 0) { |
| drawable = new BitmapDrawable(mResources, BitmapFactory.decodeResource(mResources, rsc)); |
| mDrawables.put(rsc, drawable); |
| } |
| return drawable; |
| } |
| |
| } |