| /* |
| * 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.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.graphics.Rect; |
| |
| public class ImageFilterStraighten extends ImageFilter { |
| private final Bitmap.Config mConfig = Bitmap.Config.ARGB_8888; |
| private float mRotation; |
| private float mZoomFactor; |
| |
| public ImageFilterStraighten() { |
| mName = "Straighten"; |
| } |
| |
| @Override |
| public ImageFilter clone() throws CloneNotSupportedException { |
| // FIXME: clone() should not be needed. Remove when we fix geometry. |
| ImageFilterStraighten filter = (ImageFilterStraighten) super.clone(); |
| filter.mRotation = mRotation; |
| filter.mZoomFactor = mZoomFactor; |
| return filter; |
| } |
| |
| public ImageFilterStraighten(float rotation, float zoomFactor) { |
| mRotation = rotation; |
| mZoomFactor = zoomFactor; |
| } |
| |
| public void setRotation(float rotation) { |
| mRotation = rotation; |
| } |
| |
| public void setRotationZoomFactor(float zoomFactor) { |
| mZoomFactor = zoomFactor; |
| } |
| |
| @Override |
| public void useRepresentation(FilterRepresentation representation) { |
| |
| } |
| |
| @Override |
| public Bitmap apply(Bitmap bitmap, float scaleFactor, int quality) { |
| // TODO: implement bilinear or bicubic here... for now, just use |
| // canvas to do a simple implementation... |
| // TODO: and be more memory efficient! (do it in native?) |
| |
| Bitmap temp = bitmap.copy(mConfig, true); |
| Canvas canvas = new Canvas(temp); |
| canvas.save(); |
| Rect bounds = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); |
| float w = temp.getWidth(); |
| float h = temp.getHeight(); |
| float mw = temp.getWidth() / 2.0f; |
| float mh = temp.getHeight() / 2.0f; |
| |
| canvas.scale(mZoomFactor, mZoomFactor, mw, mh); |
| canvas.rotate(mRotation, mw, mh); |
| canvas.drawBitmap(bitmap, bounds, bounds, new Paint()); |
| canvas.restore(); |
| |
| int[] pixels = new int[(int) (w * h)]; |
| temp.getPixels(pixels, 0, (int) w, 0, 0, (int) w, (int) h); |
| bitmap.setPixels(pixels, 0, (int) w, 0, 0, (int) w, (int) h); |
| temp.recycle(); |
| temp = null; |
| pixels = null; |
| return bitmap; |
| } |
| |
| } |