1 package com.android.gallery3d.filtershow.imageshow; 2 /* 3 * Copyright (C) 2013 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 import android.content.Context; 19 import android.content.res.Resources; 20 import android.graphics.Canvas; 21 import android.graphics.Matrix; 22 import android.util.AttributeSet; 23 import android.view.MotionEvent; 24 25 import com.android.gallery3d.R; 26 import com.android.gallery3d.filtershow.editors.EditorGrad; 27 import com.android.gallery3d.filtershow.filters.FilterGradRepresentation; 28 29 public class ImageGrad extends ImageShow { 30 private static final String LOGTAG = "ImageGrad"; 31 private FilterGradRepresentation mGradRep; 32 private EditorGrad mEditorGrad; 33 private float mMinTouchDist; 34 private int mActiveHandle = -1; 35 private GradControl mEllipse; 36 37 Matrix mToScr = new Matrix(); 38 float[] mPointsX = new float[FilterGradRepresentation.MAX_POINTS]; 39 float[] mPointsY = new float[FilterGradRepresentation.MAX_POINTS]; 40 41 public ImageGrad(Context context) { 42 super(context); 43 Resources res = context.getResources(); 44 mMinTouchDist = res.getDimensionPixelSize(R.dimen.gradcontrol_min_touch_dist); 45 mEllipse = new GradControl(context); 46 mEllipse.setShowReshapeHandles(false); 47 } 48 49 public ImageGrad(Context context, AttributeSet attrs) { 50 super(context, attrs); 51 Resources res = context.getResources(); 52 mMinTouchDist = res.getDimensionPixelSize(R.dimen.gradcontrol_min_touch_dist); 53 mEllipse = new GradControl(context); 54 mEllipse.setShowReshapeHandles(false); 55 } 56 57 @Override 58 public boolean onTouchEvent(MotionEvent event) { 59 int mask = event.getActionMasked(); 60 61 if (mActiveHandle == -1) { 62 if (MotionEvent.ACTION_DOWN != mask) { 63 return super.onTouchEvent(event); 64 } 65 if (event.getPointerCount() == 1) { 66 mActiveHandle = mEllipse.getCloseHandle(event.getX(), event.getY()); 67 if (mActiveHandle == -1) { 68 float x = event.getX(); 69 float y = event.getY(); 70 float min_d = Float.MAX_VALUE; 71 int pos = -1; 72 for (int i = 0; i < mPointsX.length; i++) { 73 if (mPointsX[i] == -1) { 74 continue; 75 } 76 float d = (float) Math.hypot(x - mPointsX[i], y - mPointsY[i]); 77 if ( min_d > d) { 78 min_d = d; 79 pos = i; 80 } 81 } 82 if (min_d > mMinTouchDist){ 83 pos = -1; 84 } 85 86 if (pos != -1) { 87 mGradRep.setSelectedPoint(pos); 88 resetImageCaches(this); 89 mEditorGrad.updateSeekBar(mGradRep); 90 mEditorGrad.commitLocalRepresentation(); 91 invalidate(); 92 } 93 } 94 } 95 if (mActiveHandle == -1) { 96 return super.onTouchEvent(event); 97 } 98 } else { 99 switch (mask) { 100 case MotionEvent.ACTION_UP: { 101 102 mActiveHandle = -1; 103 break; 104 } 105 case MotionEvent.ACTION_DOWN: { 106 break; 107 } 108 } 109 } 110 float x = event.getX(); 111 float y = event.getY(); 112 113 mEllipse.setScrImageInfo(getScreenToImageMatrix(true), 114 MasterImage.getImage().getOriginalBounds()); 115 116 switch (mask) { 117 case (MotionEvent.ACTION_DOWN): { 118 mEllipse.actionDown(x, y, mGradRep); 119 break; 120 } 121 case (MotionEvent.ACTION_UP): 122 case (MotionEvent.ACTION_MOVE): { 123 mEllipse.actionMove(mActiveHandle, x, y, mGradRep); 124 setRepresentation(mGradRep); 125 break; 126 } 127 } 128 invalidate(); 129 mEditorGrad.commitLocalRepresentation(); 130 return true; 131 } 132 133 public void setRepresentation(FilterGradRepresentation pointRep) { 134 mGradRep = pointRep; 135 Matrix toImg = getScreenToImageMatrix(false); 136 137 toImg.invert(mToScr); 138 139 float[] c1 = new float[] { mGradRep.getPoint1X(), mGradRep.getPoint1Y() }; 140 float[] c2 = new float[] { mGradRep.getPoint2X(), mGradRep.getPoint2Y() }; 141 142 if (c1[0] == -1) { 143 float cx = MasterImage.getImage().getOriginalBounds().width() / 2; 144 float cy = MasterImage.getImage().getOriginalBounds().height() / 2; 145 float rx = Math.min(cx, cy) * .4f; 146 147 mGradRep.setPoint1(cx, cy-rx); 148 mGradRep.setPoint2(cx, cy+rx); 149 c1[0] = cx; 150 c1[1] = cy-rx; 151 mToScr.mapPoints(c1); 152 if (getWidth() != 0) { 153 mEllipse.setPoint1(c1[0], c1[1]); 154 c2[0] = cx; 155 c2[1] = cy+rx; 156 mToScr.mapPoints(c2); 157 mEllipse.setPoint2(c2[0], c2[1]); 158 } 159 mEditorGrad.commitLocalRepresentation(); 160 } else { 161 mToScr.mapPoints(c1); 162 mToScr.mapPoints(c2); 163 mEllipse.setPoint1(c1[0], c1[1]); 164 mEllipse.setPoint2(c2[0], c2[1]); 165 } 166 } 167 168 public void drawOtherPoints(Canvas canvas) { 169 computCenterLocations(); 170 for (int i = 0; i < mPointsX.length; i++) { 171 if (mPointsX[i] != -1) { 172 mEllipse.paintGrayPoint(canvas, mPointsX[i], mPointsY[i]); 173 } 174 } 175 } 176 177 public void computCenterLocations() { 178 int x1[] = mGradRep.getXPos1(); 179 int y1[] = mGradRep.getYPos1(); 180 int x2[] = mGradRep.getXPos2(); 181 int y2[] = mGradRep.getYPos2(); 182 int selected = mGradRep.getSelectedPoint(); 183 boolean m[] = mGradRep.getMask(); 184 float[] c = new float[2]; 185 for (int i = 0; i < m.length; i++) { 186 if (selected == i || !m[i]) { 187 mPointsX[i] = -1; 188 continue; 189 } 190 191 c[0] = (x1[i]+x2[i])/2; 192 c[1] = (y1[i]+y2[i])/2; 193 mToScr.mapPoints(c); 194 195 mPointsX[i] = c[0]; 196 mPointsY[i] = c[1]; 197 } 198 } 199 200 public void setEditor(EditorGrad editorGrad) { 201 mEditorGrad = editorGrad; 202 } 203 204 @Override 205 public void onDraw(Canvas canvas) { 206 super.onDraw(canvas); 207 if (mGradRep == null) { 208 return; 209 } 210 setRepresentation(mGradRep); 211 mEllipse.draw(canvas); 212 drawOtherPoints(canvas); 213 } 214 215 } 216
