PieRenderer.java revision 4d628bcbaf4e6f2330dc9619f2129770863666dc
11373b98135b2854578111dd535e24d39c8853f14Michael Kolb/* 21373b98135b2854578111dd535e24d39c8853f14Michael Kolb * Copyright (C) 2012 The Android Open Source Project 31373b98135b2854578111dd535e24d39c8853f14Michael Kolb * 41373b98135b2854578111dd535e24d39c8853f14Michael Kolb * Licensed under the Apache License, Version 2.0 (the "License"); 51373b98135b2854578111dd535e24d39c8853f14Michael Kolb * you may not use this file except in compliance with the License. 61373b98135b2854578111dd535e24d39c8853f14Michael Kolb * You may obtain a copy of the License at 71373b98135b2854578111dd535e24d39c8853f14Michael Kolb * 81373b98135b2854578111dd535e24d39c8853f14Michael Kolb * http://www.apache.org/licenses/LICENSE-2.0 91373b98135b2854578111dd535e24d39c8853f14Michael Kolb * 101373b98135b2854578111dd535e24d39c8853f14Michael Kolb * Unless required by applicable law or agreed to in writing, software 111373b98135b2854578111dd535e24d39c8853f14Michael Kolb * distributed under the License is distributed on an "AS IS" BASIS, 121373b98135b2854578111dd535e24d39c8853f14Michael Kolb * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131373b98135b2854578111dd535e24d39c8853f14Michael Kolb * See the License for the specific language governing permissions and 141373b98135b2854578111dd535e24d39c8853f14Michael Kolb * limitations under the License. 151373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 161373b98135b2854578111dd535e24d39c8853f14Michael Kolb 171373b98135b2854578111dd535e24d39c8853f14Michael Kolbpackage com.android.camera.ui; 181373b98135b2854578111dd535e24d39c8853f14Michael Kolb 191373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.content.Context; 201373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.content.res.Resources; 211373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.graphics.Canvas; 221373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.graphics.Color; 231373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.graphics.Paint; 241373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.graphics.Path; 251373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.graphics.Point; 261373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.graphics.PointF; 271373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.graphics.RectF; 281373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.os.Handler; 291373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.os.Message; 304d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolbimport android.util.Log; 311373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.view.MotionEvent; 321373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.view.View; 331373b98135b2854578111dd535e24d39c8853f14Michael Kolb 341373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport com.android.camera.R; 351373b98135b2854578111dd535e24d39c8853f14Michael Kolb 361373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport java.util.ArrayList; 371373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport java.util.List; 381373b98135b2854578111dd535e24d39c8853f14Michael Kolb 391373b98135b2854578111dd535e24d39c8853f14Michael Kolbpublic class PieRenderer extends OverlayRenderer { 401373b98135b2854578111dd535e24d39c8853f14Michael Kolb 411373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final String TAG = "CAM Pie"; 421373b98135b2854578111dd535e24d39c8853f14Michael Kolb 434d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb private static final long PIE_OPEN_DELAY = 200; 441373b98135b2854578111dd535e24d39c8853f14Michael Kolb 451373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final int MSG_OPEN = 2; 461373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final int MSG_CLOSE = 3; 471373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final int MSG_SUBMENU = 4; 481373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final float PIE_SWEEP = (float)(Math.PI * 2 / 3); 491373b98135b2854578111dd535e24d39c8853f14Michael Kolb // geometry 501373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Point mCenter; 511373b98135b2854578111dd535e24d39c8853f14Michael Kolb private int mRadius; 521373b98135b2854578111dd535e24d39c8853f14Michael Kolb private int mRadiusInc; 531373b98135b2854578111dd535e24d39c8853f14Michael Kolb private int mSlop; 541373b98135b2854578111dd535e24d39c8853f14Michael Kolb // the detection if touch is inside a slice is offset 551373b98135b2854578111dd535e24d39c8853f14Michael Kolb // inbounds by this amount to allow the selection to show before the 561373b98135b2854578111dd535e24d39c8853f14Michael Kolb // finger covers it 571373b98135b2854578111dd535e24d39c8853f14Michael Kolb private int mTouchOffset; 581373b98135b2854578111dd535e24d39c8853f14Michael Kolb 591373b98135b2854578111dd535e24d39c8853f14Michael Kolb private boolean mOpen; 601373b98135b2854578111dd535e24d39c8853f14Michael Kolb 611373b98135b2854578111dd535e24d39c8853f14Michael Kolb private List<PieItem> mItems; 621373b98135b2854578111dd535e24d39c8853f14Michael Kolb 631373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PieItem mOpenItem; 641373b98135b2854578111dd535e24d39c8853f14Michael Kolb 651373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Paint mNormalPaint; 661373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Paint mSelectedPaint; 671373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Paint mSubPaint; 681373b98135b2854578111dd535e24d39c8853f14Michael Kolb 691373b98135b2854578111dd535e24d39c8853f14Michael Kolb // touch handling 701373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PieItem mCurrentItem; 711373b98135b2854578111dd535e24d39c8853f14Michael Kolb 721373b98135b2854578111dd535e24d39c8853f14Michael Kolb private boolean mAnimating; 731373b98135b2854578111dd535e24d39c8853f14Michael Kolb 744d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb // TODO: use mCenter 754d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb private int mDownX; 764d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb private int mDownY; 774d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb 781373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Handler mHandler = new Handler() { 791373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void handleMessage(Message msg) { 801373b98135b2854578111dd535e24d39c8853f14Michael Kolb switch(msg.what) { 811373b98135b2854578111dd535e24d39c8853f14Michael Kolb case MSG_OPEN: 821373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mListener != null) { 831373b98135b2854578111dd535e24d39c8853f14Michael Kolb mListener.onPieOpened(mCenter.x, mCenter.y); 841373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 851373b98135b2854578111dd535e24d39c8853f14Michael Kolb break; 861373b98135b2854578111dd535e24d39c8853f14Michael Kolb case MSG_CLOSE: 871373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mListener != null) { 881373b98135b2854578111dd535e24d39c8853f14Michael Kolb mListener.onPieClosed(); 891373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 901373b98135b2854578111dd535e24d39c8853f14Michael Kolb break; 911373b98135b2854578111dd535e24d39c8853f14Michael Kolb case MSG_SUBMENU: 921373b98135b2854578111dd535e24d39c8853f14Michael Kolb openCurrentItem(); 931373b98135b2854578111dd535e24d39c8853f14Michael Kolb break; 941373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 951373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 961373b98135b2854578111dd535e24d39c8853f14Michael Kolb }; 971373b98135b2854578111dd535e24d39c8853f14Michael Kolb 981373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PieListener mListener; 991373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1001373b98135b2854578111dd535e24d39c8853f14Michael Kolb static public interface PieListener { 1011373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void onPieOpened(int centerX, int centerY); 1021373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void onPieClosed(); 1031373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1041373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1051373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void setPieListener(PieListener pl) { 1061373b98135b2854578111dd535e24d39c8853f14Michael Kolb mListener = pl; 1071373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1081373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1091373b98135b2854578111dd535e24d39c8853f14Michael Kolb public PieRenderer(Context context) { 1101373b98135b2854578111dd535e24d39c8853f14Michael Kolb init(context); 1111373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1121373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void init(Context ctx) { 1131373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems = new ArrayList<PieItem>(); 1141373b98135b2854578111dd535e24d39c8853f14Michael Kolb Resources res = ctx.getResources(); 1151373b98135b2854578111dd535e24d39c8853f14Michael Kolb mRadius = (int) res.getDimension(R.dimen.pie_radius_start); 1161373b98135b2854578111dd535e24d39c8853f14Michael Kolb mRadiusInc = (int) res.getDimension(R.dimen.pie_radius_increment); 1171373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSlop = (int) res.getDimension(R.dimen.pie_touch_slop); 1181373b98135b2854578111dd535e24d39c8853f14Michael Kolb mTouchOffset = (int) res.getDimension(R.dimen.pie_touch_offset); 1191373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpen = false; 1201373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCenter = new Point(0,0); 1211373b98135b2854578111dd535e24d39c8853f14Michael Kolb mNormalPaint = new Paint(); 1221373b98135b2854578111dd535e24d39c8853f14Michael Kolb mNormalPaint.setColor(Color.argb(0, 0, 0, 0)); 1231373b98135b2854578111dd535e24d39c8853f14Michael Kolb mNormalPaint.setAntiAlias(true); 1241373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSelectedPaint = new Paint(); 1251373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSelectedPaint.setColor(Color.argb(128, 0, 0, 0)); //res.getColor(R.color.qc_selected)); 1261373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSelectedPaint.setAntiAlias(true); 1271373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSubPaint = new Paint(); 1281373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSubPaint.setAntiAlias(true); 1291373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSubPaint.setColor(Color.argb(200, 250, 230, 128)); //res.getColor(R.color.qc_sub)); 1301373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1311373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1321373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void addItem(PieItem item) { 1331373b98135b2854578111dd535e24d39c8853f14Michael Kolb // add the item to the pie itself 1341373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems.add(item); 1351373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1361373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1371373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void removeItem(PieItem item) { 1381373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems.remove(item); 1391373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1401373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1411373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void clearItems() { 1421373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems.clear(); 1431373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1441373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1451373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 1461373b98135b2854578111dd535e24d39c8853f14Michael Kolb * guaranteed has center set 1471373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @param show 1481373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 1491373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void show(boolean show) { 1501373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (show) { 1511373b98135b2854578111dd535e24d39c8853f14Michael Kolb // ensure clean state 1521373b98135b2854578111dd535e24d39c8853f14Michael Kolb mAnimating = false; 1531373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = null; 1541373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpenItem = null; 1551373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : mItems) { 1561373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setSelected(false); 1571373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1581373b98135b2854578111dd535e24d39c8853f14Michael Kolb layoutPie(); 1591373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1601373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpen = show; 1611373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.sendEmptyMessage(mOpen ? MSG_OPEN : MSG_CLOSE); 1621373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1631373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1644d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb public boolean isOpen() { 1654d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb return mOpen; 1664d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb } 1674d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb 1681373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void setCenter(int x, int y) { 1691373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCenter.x = x; 1701373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCenter.y = y; 1711373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1721373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1731373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void layoutPie() { 1741373b98135b2854578111dd535e24d39c8853f14Michael Kolb int rgap = 2; 1751373b98135b2854578111dd535e24d39c8853f14Michael Kolb int inner = mRadius + rgap; 1761373b98135b2854578111dd535e24d39c8853f14Michael Kolb int outer = mRadius + mRadiusInc - rgap; 1771373b98135b2854578111dd535e24d39c8853f14Michael Kolb int gap = 1; 1781373b98135b2854578111dd535e24d39c8853f14Michael Kolb layoutItems(mItems, (float) (Math.PI / 2), inner, outer, gap); 1791373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1801373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1814d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb private void layoutItems(List<PieItem> items, float centerAngle, int inner, 1824d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb int outer, int gap) { 1831373b98135b2854578111dd535e24d39c8853f14Michael Kolb float emptyangle = PIE_SWEEP / 16; 1841373b98135b2854578111dd535e24d39c8853f14Michael Kolb float sweep = (float) (PIE_SWEEP - 2 * emptyangle) / items.size(); 1851373b98135b2854578111dd535e24d39c8853f14Michael Kolb float angle = centerAngle - PIE_SWEEP / 2 + emptyangle + sweep / 2; 186b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb // check if we have custom geometry 187b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb // first item we find triggers custom sweep for all 188b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb // this allows us to re-use the path 189b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb for (PieItem item : items) { 190b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb if (item.getCenter() >= 0) { 191b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb sweep = item.getSweep(); 192b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb break; 193b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 194b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 1954d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb Path path = makeSlice(getDegrees(0) - gap, getDegrees(sweep) + gap, 1964d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb outer, inner, mCenter); 1971373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : items) { 1981373b98135b2854578111dd535e24d39c8853f14Michael Kolb // shared between items 1991373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setPath(path); 2001373b98135b2854578111dd535e24d39c8853f14Michael Kolb View view = item.getView(); 201b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb if (item.getCenter() >= 0) { 202b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb angle = item.getCenter(); 203b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 2041373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (view != null) { 2051373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.measure(view.getLayoutParams().width, 2061373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.getLayoutParams().height); 2071373b98135b2854578111dd535e24d39c8853f14Michael Kolb int w = view.getMeasuredWidth(); 2081373b98135b2854578111dd535e24d39c8853f14Michael Kolb int h = view.getMeasuredHeight(); 2091373b98135b2854578111dd535e24d39c8853f14Michael Kolb // move views to outer border 2101373b98135b2854578111dd535e24d39c8853f14Michael Kolb int r = inner + (outer - inner) * 2 / 3; 2111373b98135b2854578111dd535e24d39c8853f14Michael Kolb int x = (int) (r * Math.cos(angle)); 2121373b98135b2854578111dd535e24d39c8853f14Michael Kolb int y = mCenter.y - (int) (r * Math.sin(angle)) - h / 2; 2131373b98135b2854578111dd535e24d39c8853f14Michael Kolb x = mCenter.x + x - w / 2; 2141373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.layout(x, y, x + w, y + h); 2151373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2161373b98135b2854578111dd535e24d39c8853f14Michael Kolb float itemstart = angle - sweep / 2; 2171373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setGeometry(itemstart, sweep, inner, outer); 2181373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (item.hasItems()) { 2194d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb layoutItems(item.getItems(), angle, inner, 2204d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb outer + mRadiusInc / 2, gap); 2211373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2221373b98135b2854578111dd535e24d39c8853f14Michael Kolb angle += sweep; 2231373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2244d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb } 2251373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2261373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Path makeSlice(float start, float end, int outer, int inner, Point center) { 2271373b98135b2854578111dd535e24d39c8853f14Michael Kolb outer = inner + (outer - inner) * 2 / 3; 2281373b98135b2854578111dd535e24d39c8853f14Michael Kolb RectF bb = 2291373b98135b2854578111dd535e24d39c8853f14Michael Kolb new RectF(center.x - outer, center.y - outer, center.x + outer, 2301373b98135b2854578111dd535e24d39c8853f14Michael Kolb center.y + outer); 2311373b98135b2854578111dd535e24d39c8853f14Michael Kolb RectF bbi = 2321373b98135b2854578111dd535e24d39c8853f14Michael Kolb new RectF(center.x - inner, center.y - inner, center.x + inner, 2331373b98135b2854578111dd535e24d39c8853f14Michael Kolb center.y + inner); 2341373b98135b2854578111dd535e24d39c8853f14Michael Kolb Path path = new Path(); 2351373b98135b2854578111dd535e24d39c8853f14Michael Kolb path.arcTo(bb, start, end - start, true); 2361373b98135b2854578111dd535e24d39c8853f14Michael Kolb path.arcTo(bbi, end, start - end); 2371373b98135b2854578111dd535e24d39c8853f14Michael Kolb path.close(); 2381373b98135b2854578111dd535e24d39c8853f14Michael Kolb return path; 2391373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2401373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2411373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 2421373b98135b2854578111dd535e24d39c8853f14Michael Kolb * converts a 243b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb * @param angle from 0..PI to Android degrees (clockwise starting at 3 o'clock) 2441373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @return skia angle 2451373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 2461373b98135b2854578111dd535e24d39c8853f14Michael Kolb private float getDegrees(double angle) { 2471373b98135b2854578111dd535e24d39c8853f14Michael Kolb return (float) (360 - 180 * angle / Math.PI); 2481373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2491373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2501373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 2511373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void onDraw(Canvas canvas) { 2521373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpen) { 2531373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpenItem == null) { 2541373b98135b2854578111dd535e24d39c8853f14Michael Kolb // draw base menu 2551373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : mItems) { 2561373b98135b2854578111dd535e24d39c8853f14Michael Kolb drawItem(canvas, item); 2571373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2581373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else { 2591373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem inner : mOpenItem.getItems()) { 2601373b98135b2854578111dd535e24d39c8853f14Michael Kolb drawItem(canvas, inner); 2611373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2621373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2631373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2641373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2651373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2661373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void drawItem(Canvas canvas, PieItem item) { 2671373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (item.getView() != null) { 2681373b98135b2854578111dd535e24d39c8853f14Michael Kolb Paint p = item.isSelected() ? mSelectedPaint : mNormalPaint; 2691373b98135b2854578111dd535e24d39c8853f14Michael Kolb int state = canvas.save(); 270b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb float r = getDegrees(item.getStartAngle()); 2711373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.rotate(r, mCenter.x, mCenter.y); 2721373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.drawPath(item.getPath(), p); 2731373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.restoreToCount(state); 2741373b98135b2854578111dd535e24d39c8853f14Michael Kolb // draw the item view 2751373b98135b2854578111dd535e24d39c8853f14Michael Kolb View view = item.getView(); 2761373b98135b2854578111dd535e24d39c8853f14Michael Kolb state = canvas.save(); 2771373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.translate(view.getX(), view.getY()); 2781373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.draw(canvas); 2791373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.restoreToCount(state); 2801373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2811373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2821373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2831373b98135b2854578111dd535e24d39c8853f14Michael Kolb // touch handling for pie 2841373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2851373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 2861373b98135b2854578111dd535e24d39c8853f14Michael Kolb public boolean onTouchEvent(MotionEvent evt) { 2871373b98135b2854578111dd535e24d39c8853f14Michael Kolb float x = evt.getX(); 2881373b98135b2854578111dd535e24d39c8853f14Michael Kolb float y = evt.getY(); 2891373b98135b2854578111dd535e24d39c8853f14Michael Kolb int action = evt.getActionMasked(); 2901373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (MotionEvent.ACTION_DOWN == action) { 2911373b98135b2854578111dd535e24d39c8853f14Michael Kolb mDownX = (int) x; 2921373b98135b2854578111dd535e24d39c8853f14Michael Kolb mDownY = (int) y; 2931373b98135b2854578111dd535e24d39c8853f14Michael Kolb setCenter((int) x, (int) y); 2944d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb show(true); 2951373b98135b2854578111dd535e24d39c8853f14Michael Kolb return true; 2961373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else if (MotionEvent.ACTION_UP == action) { 2971373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpen) { 2981373b98135b2854578111dd535e24d39c8853f14Michael Kolb PieItem item = mCurrentItem; 2991373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (!mAnimating) { 3001373b98135b2854578111dd535e24d39c8853f14Michael Kolb deselect(); 3011373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3021373b98135b2854578111dd535e24d39c8853f14Michael Kolb show(false); 3031373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((item != null) && (item.getView() != null)) { 3041373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((item == mOpenItem) || !mAnimating) { 3051373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.getView().performClick(); 3061373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3071373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3081373b98135b2854578111dd535e24d39c8853f14Michael Kolb return true; 3091373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3101373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else if (MotionEvent.ACTION_CANCEL == action) { 3111373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpen) { 3121373b98135b2854578111dd535e24d39c8853f14Michael Kolb show(false); 3131373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3141373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (!mAnimating) { 3151373b98135b2854578111dd535e24d39c8853f14Michael Kolb deselect(); 3161373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3171373b98135b2854578111dd535e24d39c8853f14Michael Kolb return false; 3181373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else if (MotionEvent.ACTION_MOVE == action) { 3191373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mAnimating) return false; 3204d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb PointF polar = getPolar(x, y); 3214d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb int maxr = mRadius + mRadiusInc + 50; 3224d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb if (polar.y < mRadius) { 3234d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb if (mOpenItem != null) { 3244d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb mOpenItem = null; 3254d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb } else if (!mAnimating) { 3261373b98135b2854578111dd535e24d39c8853f14Michael Kolb deselect(); 3271373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3284d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb return false; 3294d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb } 3304d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb if (polar.y > maxr) { 3314d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb deselect(); 3324d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb show(false); 3334d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb evt.setAction(MotionEvent.ACTION_DOWN); 3344d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb return false; 3354d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb } 3364d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb PieItem item = findItem(polar); 3374d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb if (item == null) { 3384d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb } else if (mCurrentItem != item) { 3394d628bcbaf4e6f2330dc9619f2129770863666dcMichael Kolb onEnter(item); 3401373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3411373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3421373b98135b2854578111dd535e24d39c8853f14Michael Kolb return false; 3431373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3441373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3451373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 3461373b98135b2854578111dd535e24d39c8853f14Michael Kolb * enter a slice for a view 3471373b98135b2854578111dd535e24d39c8853f14Michael Kolb * updates model only 3481373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @param item 3491373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 3501373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void onEnter(PieItem item) { 3511373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mCurrentItem != null) { 3521373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem.setSelected(false); 3531373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3542d3af28f91481d7f3887cb0bb9c5d06375baf787Michael Kolb if (item != null && item.isEnabled()) { 3551373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setSelected(true); 3561373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = item; 3571373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((mCurrentItem != mOpenItem) && mCurrentItem.hasItems()) { 3581373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.sendEmptyMessageDelayed(MSG_SUBMENU, PIE_OPEN_DELAY); 3591373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3601373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else { 3611373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = null; 3621373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3631373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3641373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3651373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void deselect() { 3661373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mCurrentItem != null) { 3671373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem.setSelected(false); 3681373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.removeMessages(MSG_SUBMENU); 3691373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3701373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpenItem != null) { 3711373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpenItem = null; 3721373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3731373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = null; 3741373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3751373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3761373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void openCurrentItem() { 3771373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((mCurrentItem != null) && mCurrentItem.hasItems()) { 3781373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpenItem = mCurrentItem; 3791373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3801373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3811373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3821373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PointF getPolar(float x, float y) { 3831373b98135b2854578111dd535e24d39c8853f14Michael Kolb PointF res = new PointF(); 3841373b98135b2854578111dd535e24d39c8853f14Michael Kolb // get angle and radius from x/y 3851373b98135b2854578111dd535e24d39c8853f14Michael Kolb res.x = (float) Math.PI / 2; 3861373b98135b2854578111dd535e24d39c8853f14Michael Kolb x = x - mCenter.x; 3871373b98135b2854578111dd535e24d39c8853f14Michael Kolb y = mCenter.y - y; 3881373b98135b2854578111dd535e24d39c8853f14Michael Kolb res.y = (float) Math.sqrt(x * x + y * y) + mTouchOffset; 3891373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (x != 0) { 3901373b98135b2854578111dd535e24d39c8853f14Michael Kolb res.x = (float) Math.atan2(y, x); 391b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb if (res.x < 0) { 392b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb res.x = (float) (2 * Math.PI + res.x); 393b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 3941373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3951373b98135b2854578111dd535e24d39c8853f14Michael Kolb return res; 3961373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3971373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3981373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 3991373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @param polar x: angle, y: dist 4001373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @return the item at angle/dist or null 4011373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 4021373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PieItem findItem(PointF polar) { 4031373b98135b2854578111dd535e24d39c8853f14Michael Kolb // find the matching item: 4041373b98135b2854578111dd535e24d39c8853f14Michael Kolb List<PieItem> items = (mOpenItem != null) ? mOpenItem.getItems() : mItems; 4051373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : items) { 4061373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (inside(polar, mTouchOffset, item)) { 4071373b98135b2854578111dd535e24d39c8853f14Michael Kolb return item; 4081373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4091373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4101373b98135b2854578111dd535e24d39c8853f14Michael Kolb return null; 4111373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4121373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4131373b98135b2854578111dd535e24d39c8853f14Michael Kolb private boolean inside(PointF polar, float offset, PieItem item) { 4141373b98135b2854578111dd535e24d39c8853f14Michael Kolb return (item.getInnerRadius() < polar.y + offset) 4151373b98135b2854578111dd535e24d39c8853f14Michael Kolb && (item.getOuterRadius() > polar.y + offset) 4161373b98135b2854578111dd535e24d39c8853f14Michael Kolb && (item.getStartAngle() < polar.x) 4171373b98135b2854578111dd535e24d39c8853f14Michael Kolb && (item.getStartAngle() + item.getSweep() > polar.x); 4181373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4191373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4201373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 4211373b98135b2854578111dd535e24d39c8853f14Michael Kolb public boolean handlesTouch() { 4221373b98135b2854578111dd535e24d39c8853f14Michael Kolb return true; 4231373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4241373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4251373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 4261373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void layout(int l, int t, int r, int b) { 4271373b98135b2854578111dd535e24d39c8853f14Michael Kolb super.layout(l, t, r, b); 4281373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4291373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4301373b98135b2854578111dd535e24d39c8853f14Michael Kolb} 431