1 /* 2 * Copyright (C) 2010 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.photoeditor.actions; 18 19 import android.graphics.Matrix; 20 import android.graphics.RectF; 21 import android.view.View; 22 import android.view.ViewGroup; 23 24 import com.android.photoeditor.FilterStack; 25 import com.android.photoeditor.R; 26 import com.android.photoeditor.RectUtils; 27 import com.android.photoeditor.filters.StraightenFilter; 28 29 /** 30 * An action handling straighten effect. 31 */ 32 public class StraightenAction extends FilterAction { 33 34 private static final float DEFAULT_ANGLE = 0.0f; 35 private static final float DEFAULT_ROTATE_SPAN = 60.0f; 36 37 private StraightenFilter filter; 38 StraightenAction(FilterStack filterStack, ViewGroup tools)39 public StraightenAction(FilterStack filterStack, ViewGroup tools) { 40 super(filterStack, tools, R.string.straighten_tooltip); 41 } 42 43 @Override onBegin()44 public void onBegin() { 45 filter = new StraightenFilter(); 46 47 final Matrix matrix = new Matrix(); 48 final RectF photoBounds = photoView.getPhotoBounds(); 49 final float displayScale = RectUtils.getDisplayScale(photoBounds, photoView); 50 51 RectF displayBounds = photoView.getPhotoDisplayBounds(); 52 photoView.clipPhoto(displayBounds); 53 54 // Directly transform photo-view instead of waiting for top-filter output callback. 55 rotateView.setOnAngleChangeListener(new RotateView.OnRotateChangeListener() { 56 57 @Override 58 public void onAngleChanged(float angle, boolean fromUser){ 59 if (fromUser) { 60 filter.setAngle(angle); 61 notifyFilterChanged(filter, false); 62 RectUtils.getStraightenMatrix(photoBounds, angle, matrix); 63 matrix.postScale(displayScale, displayScale); 64 photoView.transformDisplay(matrix); 65 } 66 } 67 68 @Override 69 public void onStartTrackingTouch() { 70 // no-op 71 } 72 73 @Override 74 public void onStopTrackingTouch() { 75 // no-op 76 } 77 }); 78 rotateView.setGridBounds(displayBounds); 79 rotateView.setRotatedAngle(DEFAULT_ANGLE); 80 rotateView.setRotateSpan(DEFAULT_ROTATE_SPAN); 81 rotateView.setVisibility(View.VISIBLE); 82 } 83 84 @Override onEnd()85 public void onEnd() { 86 notifyFilterChanged(filter, true); 87 } 88 } 89