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 17package com.android.gallery3d.filtershow.imageshow; 18 19import android.content.Context; 20import android.graphics.Bitmap; 21import android.graphics.Canvas; 22import android.graphics.Color; 23import android.graphics.Paint; 24import android.graphics.Path; 25import android.graphics.RectF; 26import android.util.AttributeSet; 27 28import com.android.gallery3d.R; 29 30public class ImageStraighten extends ImageGeometry { 31 32 private float mBaseAngle = 0; 33 private float mAngle = 0; 34 35 private static final String LOGTAG = "ImageStraighten"; 36 private static final Paint gPaint = new Paint(); 37 public ImageStraighten(Context context) { 38 super(context); 39 } 40 41 public ImageStraighten(Context context, AttributeSet attrs) { 42 super(context, attrs); 43 } 44 45 @Override 46 public String getName() { 47 return getContext().getString(R.string.straighten); 48 } 49 50 @Override 51 protected void setActionDown(float x, float y) { 52 super.setActionDown(x, y); 53 mBaseAngle = mAngle = getLocalStraighten(); 54 } 55 56 private void setCropToStraighten(){ 57 setLocalCropBounds(getUntranslatedStraightenCropBounds(getLocalPhotoBounds(), 58 getLocalStraighten())); 59 } 60 61 @Override 62 protected void setActionMove(float x, float y) { 63 super.setActionMove(x, y); 64 computeValue(); 65 setLocalStraighten(mAngle); 66 setCropToStraighten(); 67 } 68 69 private void computeValue() { 70 float angle = getCurrentTouchAngle(); 71 mAngle = (mBaseAngle - angle) % 360; 72 mAngle = Math.max(MIN_STRAIGHTEN_ANGLE, mAngle); 73 mAngle = Math.min(MAX_STRAIGHTEN_ANGLE, mAngle); 74 } 75 76 @Override 77 protected void lostVisibility() { 78 saveAndSetPreset(); 79 } 80 81 @Override 82 protected void gainedVisibility(){ 83 setCropToStraighten(); 84 } 85 86 @Override 87 protected void setActionUp() { 88 super.setActionUp(); 89 setCropToStraighten(); 90 } 91 92 @Override 93 public void onNewValue(int value) { 94 setLocalStraighten(GeometryMath.clamp(value, MIN_STRAIGHTEN_ANGLE, MAX_STRAIGHTEN_ANGLE)); 95 if (getPanelController() != null) { 96 getPanelController().onNewValue((int) getLocalStraighten()); 97 } 98 invalidate(); 99 } 100 101 @Override 102 protected int getLocalValue() { 103 return (int) getLocalStraighten(); 104 } 105 106 @Override 107 protected void drawShape(Canvas canvas, Bitmap image) { 108 drawTransformed(canvas, image, gPaint); 109 110 // Draw the grid 111 RectF bounds = straightenBounds(); 112 Path path = new Path(); 113 path.addRect(bounds, Path.Direction.CCW); 114 gPaint.setARGB(255, 255, 255, 255); 115 gPaint.setStrokeWidth(3); 116 gPaint.setStyle(Paint.Style.FILL_AND_STROKE); 117 118 RectF display = getLocalDisplayBounds(); 119 float dWidth = display.width(); 120 float dHeight = display.height(); 121 122 if (mMode == MODES.MOVE) { 123 canvas.save(); 124 canvas.clipPath(path); 125 126 int n = 16; 127 float step = dWidth / n; 128 float p = 0; 129 for (int i = 1; i < n; i++) { 130 p = i * step; 131 gPaint.setARGB(60, 255, 255, 255); 132 canvas.drawLine(p, 0, p, dHeight, gPaint); 133 canvas.drawLine(0, p, dWidth, p, gPaint); 134 } 135 canvas.restore(); 136 } 137 } 138 139} 140