PieRenderer.java revision 2d3af28f91481d7f3887cb0bb9c5d06375baf787
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; 301373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.view.MotionEvent; 311373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport android.view.View; 321373b98135b2854578111dd535e24d39c8853f14Michael Kolb 331373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport com.android.camera.R; 341373b98135b2854578111dd535e24d39c8853f14Michael Kolb 351373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport java.util.ArrayList; 361373b98135b2854578111dd535e24d39c8853f14Michael Kolbimport java.util.List; 371373b98135b2854578111dd535e24d39c8853f14Michael Kolb 381373b98135b2854578111dd535e24d39c8853f14Michael Kolbpublic class PieRenderer extends OverlayRenderer { 391373b98135b2854578111dd535e24d39c8853f14Michael Kolb 401373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final String TAG = "CAM Pie"; 411373b98135b2854578111dd535e24d39c8853f14Michael Kolb 421373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final long PIE_OPEN_DELAY = 100; 431373b98135b2854578111dd535e24d39c8853f14Michael Kolb 441373b98135b2854578111dd535e24d39c8853f14Michael Kolb private static final int MSG_SHOW = 1; 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 741373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Handler mHandler = new Handler() { 751373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void handleMessage(Message msg) { 761373b98135b2854578111dd535e24d39c8853f14Michael Kolb switch(msg.what) { 771373b98135b2854578111dd535e24d39c8853f14Michael Kolb case MSG_SHOW: 781373b98135b2854578111dd535e24d39c8853f14Michael Kolb show(true); 791373b98135b2854578111dd535e24d39c8853f14Michael Kolb break; 801373b98135b2854578111dd535e24d39c8853f14Michael Kolb case MSG_OPEN: 811373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mListener != null) { 821373b98135b2854578111dd535e24d39c8853f14Michael Kolb mListener.onPieOpened(mCenter.x, mCenter.y); 831373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 841373b98135b2854578111dd535e24d39c8853f14Michael Kolb break; 851373b98135b2854578111dd535e24d39c8853f14Michael Kolb case MSG_CLOSE: 861373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mListener != null) { 871373b98135b2854578111dd535e24d39c8853f14Michael Kolb mListener.onPieClosed(); 881373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 891373b98135b2854578111dd535e24d39c8853f14Michael Kolb break; 901373b98135b2854578111dd535e24d39c8853f14Michael Kolb case MSG_SUBMENU: 911373b98135b2854578111dd535e24d39c8853f14Michael Kolb openCurrentItem(); 921373b98135b2854578111dd535e24d39c8853f14Michael Kolb break; 931373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 941373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 951373b98135b2854578111dd535e24d39c8853f14Michael Kolb }; 961373b98135b2854578111dd535e24d39c8853f14Michael Kolb 971373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PieListener mListener; 981373b98135b2854578111dd535e24d39c8853f14Michael Kolb 991373b98135b2854578111dd535e24d39c8853f14Michael Kolb static public interface PieListener { 1001373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void onPieOpened(int centerX, int centerY); 1011373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void onPieClosed(); 1021373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1031373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1041373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void setPieListener(PieListener pl) { 1051373b98135b2854578111dd535e24d39c8853f14Michael Kolb mListener = pl; 1061373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1071373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1081373b98135b2854578111dd535e24d39c8853f14Michael Kolb public PieRenderer(Context context) { 1091373b98135b2854578111dd535e24d39c8853f14Michael Kolb init(context); 1101373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1111373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void init(Context ctx) { 1121373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems = new ArrayList<PieItem>(); 1131373b98135b2854578111dd535e24d39c8853f14Michael Kolb Resources res = ctx.getResources(); 1141373b98135b2854578111dd535e24d39c8853f14Michael Kolb mRadius = (int) res.getDimension(R.dimen.pie_radius_start); 1151373b98135b2854578111dd535e24d39c8853f14Michael Kolb mRadiusInc = (int) res.getDimension(R.dimen.pie_radius_increment); 1161373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSlop = (int) res.getDimension(R.dimen.pie_touch_slop); 1171373b98135b2854578111dd535e24d39c8853f14Michael Kolb mTouchOffset = (int) res.getDimension(R.dimen.pie_touch_offset); 1181373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpen = false; 1191373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCenter = new Point(0,0); 1201373b98135b2854578111dd535e24d39c8853f14Michael Kolb mNormalPaint = new Paint(); 1211373b98135b2854578111dd535e24d39c8853f14Michael Kolb mNormalPaint.setColor(Color.argb(0, 0, 0, 0)); 1221373b98135b2854578111dd535e24d39c8853f14Michael Kolb mNormalPaint.setAntiAlias(true); 1231373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSelectedPaint = new Paint(); 1241373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSelectedPaint.setColor(Color.argb(128, 0, 0, 0)); //res.getColor(R.color.qc_selected)); 1251373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSelectedPaint.setAntiAlias(true); 1261373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSubPaint = new Paint(); 1271373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSubPaint.setAntiAlias(true); 1281373b98135b2854578111dd535e24d39c8853f14Michael Kolb mSubPaint.setColor(Color.argb(200, 250, 230, 128)); //res.getColor(R.color.qc_sub)); 1291373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1301373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1311373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void addItem(PieItem item) { 1321373b98135b2854578111dd535e24d39c8853f14Michael Kolb // add the item to the pie itself 1331373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems.add(item); 1341373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1351373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1361373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void removeItem(PieItem item) { 1371373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems.remove(item); 1381373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1391373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1401373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void clearItems() { 1411373b98135b2854578111dd535e24d39c8853f14Michael Kolb mItems.clear(); 1421373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1431373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1441373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 1451373b98135b2854578111dd535e24d39c8853f14Michael Kolb * guaranteed has center set 1461373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @param show 1471373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 1481373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void show(boolean show) { 1491373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (show) { 1501373b98135b2854578111dd535e24d39c8853f14Michael Kolb // ensure clean state 1511373b98135b2854578111dd535e24d39c8853f14Michael Kolb mAnimating = false; 1521373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = null; 1531373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpenItem = null; 1541373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : mItems) { 1551373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setSelected(false); 1561373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1571373b98135b2854578111dd535e24d39c8853f14Michael Kolb layoutPie(); 1581373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1591373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpen = show; 1601373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.sendEmptyMessage(mOpen ? MSG_OPEN : MSG_CLOSE); 1611373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1621373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1631373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void setCenter(int x, int y) { 1641373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCenter.x = x; 1651373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCenter.y = y; 1661373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1671373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1681373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void layoutPie() { 1691373b98135b2854578111dd535e24d39c8853f14Michael Kolb int rgap = 2; 1701373b98135b2854578111dd535e24d39c8853f14Michael Kolb int inner = mRadius + rgap; 1711373b98135b2854578111dd535e24d39c8853f14Michael Kolb int outer = mRadius + mRadiusInc - rgap; 1721373b98135b2854578111dd535e24d39c8853f14Michael Kolb int gap = 1; 1731373b98135b2854578111dd535e24d39c8853f14Michael Kolb layoutItems(mItems, (float) (Math.PI / 2), inner, outer, gap); 1741373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 1751373b98135b2854578111dd535e24d39c8853f14Michael Kolb 1761373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void layoutItems(List<PieItem> items, float centerAngle, int inner, int outer, int gap) { 1771373b98135b2854578111dd535e24d39c8853f14Michael Kolb float pi = (float) Math.PI; 1781373b98135b2854578111dd535e24d39c8853f14Michael Kolb float emptyangle = PIE_SWEEP / 16; 1791373b98135b2854578111dd535e24d39c8853f14Michael Kolb float sweep = (float) (PIE_SWEEP - 2 * emptyangle) / items.size(); 1801373b98135b2854578111dd535e24d39c8853f14Michael Kolb float angle = centerAngle - PIE_SWEEP / 2 + emptyangle + sweep / 2; 181b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb // check if we have custom geometry 182b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb // first item we find triggers custom sweep for all 183b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb // this allows us to re-use the path 184b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb for (PieItem item : items) { 185b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb if (item.getCenter() >= 0) { 186b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb sweep = item.getSweep(); 187b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb break; 188b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 189b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 1901373b98135b2854578111dd535e24d39c8853f14Michael Kolb Path path = makeSlice(getDegrees(0) - gap, getDegrees(sweep) + gap, outer, inner, mCenter); 1911373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : items) { 1921373b98135b2854578111dd535e24d39c8853f14Michael Kolb // shared between items 1931373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setPath(path); 1941373b98135b2854578111dd535e24d39c8853f14Michael Kolb View view = item.getView(); 195b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb if (item.getCenter() >= 0) { 196b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb angle = item.getCenter(); 197b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 1981373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (view != null) { 1991373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.measure(view.getLayoutParams().width, 2001373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.getLayoutParams().height); 2011373b98135b2854578111dd535e24d39c8853f14Michael Kolb int w = view.getMeasuredWidth(); 2021373b98135b2854578111dd535e24d39c8853f14Michael Kolb int h = view.getMeasuredHeight(); 2031373b98135b2854578111dd535e24d39c8853f14Michael Kolb // move views to outer border 2041373b98135b2854578111dd535e24d39c8853f14Michael Kolb int r = inner + (outer - inner) * 2 / 3; 2051373b98135b2854578111dd535e24d39c8853f14Michael Kolb int x = (int) (r * Math.cos(angle)); 2061373b98135b2854578111dd535e24d39c8853f14Michael Kolb int y = mCenter.y - (int) (r * Math.sin(angle)) - h / 2; 2071373b98135b2854578111dd535e24d39c8853f14Michael Kolb x = mCenter.x + x - w / 2; 2081373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.layout(x, y, x + w, y + h); 2091373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2101373b98135b2854578111dd535e24d39c8853f14Michael Kolb float itemstart = angle - sweep / 2; 2111373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setGeometry(itemstart, sweep, inner, outer); 2121373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (item.hasItems()) { 2131373b98135b2854578111dd535e24d39c8853f14Michael Kolb layoutItems(item.getItems(), angle, inner, outer + mRadiusInc / 2, gap); 2141373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2151373b98135b2854578111dd535e24d39c8853f14Michael Kolb angle += sweep; 2161373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2171373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2181373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2191373b98135b2854578111dd535e24d39c8853f14Michael Kolb private Path makeSlice(float start, float end, int outer, int inner, Point center) { 2201373b98135b2854578111dd535e24d39c8853f14Michael Kolb outer = inner + (outer - inner) * 2 / 3; 2211373b98135b2854578111dd535e24d39c8853f14Michael Kolb RectF bb = 2221373b98135b2854578111dd535e24d39c8853f14Michael Kolb new RectF(center.x - outer, center.y - outer, center.x + outer, 2231373b98135b2854578111dd535e24d39c8853f14Michael Kolb center.y + outer); 2241373b98135b2854578111dd535e24d39c8853f14Michael Kolb RectF bbi = 2251373b98135b2854578111dd535e24d39c8853f14Michael Kolb new RectF(center.x - inner, center.y - inner, center.x + inner, 2261373b98135b2854578111dd535e24d39c8853f14Michael Kolb center.y + inner); 2271373b98135b2854578111dd535e24d39c8853f14Michael Kolb Path path = new Path(); 2281373b98135b2854578111dd535e24d39c8853f14Michael Kolb path.arcTo(bb, start, end - start, true); 2291373b98135b2854578111dd535e24d39c8853f14Michael Kolb path.arcTo(bbi, end, start - end); 2301373b98135b2854578111dd535e24d39c8853f14Michael Kolb path.close(); 2311373b98135b2854578111dd535e24d39c8853f14Michael Kolb return path; 2321373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2331373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2341373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 2351373b98135b2854578111dd535e24d39c8853f14Michael Kolb * converts a 236b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb * @param angle from 0..PI to Android degrees (clockwise starting at 3 o'clock) 2371373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @return skia angle 2381373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 2391373b98135b2854578111dd535e24d39c8853f14Michael Kolb private float getDegrees(double angle) { 2401373b98135b2854578111dd535e24d39c8853f14Michael Kolb return (float) (360 - 180 * angle / Math.PI); 2411373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2421373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2431373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 2441373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void onDraw(Canvas canvas) { 2451373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpen) { 2461373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpenItem == null) { 2471373b98135b2854578111dd535e24d39c8853f14Michael Kolb // draw base menu 2481373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : mItems) { 2491373b98135b2854578111dd535e24d39c8853f14Michael Kolb drawItem(canvas, item); 2501373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2511373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else { 2521373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem inner : mOpenItem.getItems()) { 2531373b98135b2854578111dd535e24d39c8853f14Michael Kolb drawItem(canvas, inner); 2541373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2551373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2561373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2571373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2581373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2591373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void drawItem(Canvas canvas, PieItem item) { 2601373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (item.getView() != null) { 2611373b98135b2854578111dd535e24d39c8853f14Michael Kolb Paint p = item.isSelected() ? mSelectedPaint : mNormalPaint; 2621373b98135b2854578111dd535e24d39c8853f14Michael Kolb int state = canvas.save(); 263b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb float r = getDegrees(item.getStartAngle()); 2641373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.rotate(r, mCenter.x, mCenter.y); 2651373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.drawPath(item.getPath(), p); 2661373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.restoreToCount(state); 2671373b98135b2854578111dd535e24d39c8853f14Michael Kolb // draw the item view 2681373b98135b2854578111dd535e24d39c8853f14Michael Kolb View view = item.getView(); 2691373b98135b2854578111dd535e24d39c8853f14Michael Kolb state = canvas.save(); 2701373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.translate(view.getX(), view.getY()); 2711373b98135b2854578111dd535e24d39c8853f14Michael Kolb view.draw(canvas); 2721373b98135b2854578111dd535e24d39c8853f14Michael Kolb canvas.restoreToCount(state); 2731373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2741373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2751373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2761373b98135b2854578111dd535e24d39c8853f14Michael Kolb // touch handling for pie 2771373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2781373b98135b2854578111dd535e24d39c8853f14Michael Kolb // TODO: use mCenter 2791373b98135b2854578111dd535e24d39c8853f14Michael Kolb int mDownX; 2801373b98135b2854578111dd535e24d39c8853f14Michael Kolb int mDownY; 2811373b98135b2854578111dd535e24d39c8853f14Michael Kolb 2821373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 2831373b98135b2854578111dd535e24d39c8853f14Michael Kolb public boolean onTouchEvent(MotionEvent evt) { 2841373b98135b2854578111dd535e24d39c8853f14Michael Kolb float x = evt.getX(); 2851373b98135b2854578111dd535e24d39c8853f14Michael Kolb float y = evt.getY(); 2861373b98135b2854578111dd535e24d39c8853f14Michael Kolb int action = evt.getActionMasked(); 2871373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (MotionEvent.ACTION_DOWN == action) { 2881373b98135b2854578111dd535e24d39c8853f14Michael Kolb mDownX = (int) x; 2891373b98135b2854578111dd535e24d39c8853f14Michael Kolb mDownY = (int) y; 2901373b98135b2854578111dd535e24d39c8853f14Michael Kolb setCenter((int) x, (int) y); 2911373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.sendEmptyMessageDelayed(MSG_SHOW, PIE_OPEN_DELAY); 2921373b98135b2854578111dd535e24d39c8853f14Michael Kolb return true; 2931373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else if (MotionEvent.ACTION_UP == action) { 2941373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpen) { 2951373b98135b2854578111dd535e24d39c8853f14Michael Kolb PieItem item = mCurrentItem; 2961373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (!mAnimating) { 2971373b98135b2854578111dd535e24d39c8853f14Michael Kolb deselect(); 2981373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 2991373b98135b2854578111dd535e24d39c8853f14Michael Kolb show(false); 3001373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((item != null) && (item.getView() != null)) { 3011373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((item == mOpenItem) || !mAnimating) { 3021373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.getView().performClick(); 3031373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3041373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3051373b98135b2854578111dd535e24d39c8853f14Michael Kolb return true; 3061373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else { 3071373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.removeMessages(MSG_SHOW); 3081373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3091373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else if (MotionEvent.ACTION_CANCEL == action) { 3101373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpen) { 3111373b98135b2854578111dd535e24d39c8853f14Michael Kolb show(false); 3121373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3131373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.removeMessages(MSG_SHOW); 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; 3201373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (!mOpen) { 3211373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((Math.abs(x - mDownX) > mSlop) || Math.abs(y - mDownY) > mSlop) { 3221373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.removeMessages(MSG_SHOW); 3231373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3241373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else { 3251373b98135b2854578111dd535e24d39c8853f14Michael Kolb PointF polar = getPolar(x, y); 3261373b98135b2854578111dd535e24d39c8853f14Michael Kolb int maxr = mRadius + mRadiusInc + 50; 3271373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (polar.y < mRadius) { 3281373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpenItem != null) { 3291373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpenItem = null; 3301373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else if (!mAnimating) { 3311373b98135b2854578111dd535e24d39c8853f14Michael Kolb deselect(); 3321373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3331373b98135b2854578111dd535e24d39c8853f14Michael Kolb return false; 3341373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3351373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (polar.y > maxr) { 3361373b98135b2854578111dd535e24d39c8853f14Michael Kolb deselect(); 3371373b98135b2854578111dd535e24d39c8853f14Michael Kolb show(false); 3381373b98135b2854578111dd535e24d39c8853f14Michael Kolb evt.setAction(MotionEvent.ACTION_DOWN); 3391373b98135b2854578111dd535e24d39c8853f14Michael Kolb return false; 3401373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3411373b98135b2854578111dd535e24d39c8853f14Michael Kolb PieItem item = findItem(polar); 3421373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (item == null) { 3431373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else if (mCurrentItem != item) { 3441373b98135b2854578111dd535e24d39c8853f14Michael Kolb onEnter(item); 3451373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3461373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3471373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3481373b98135b2854578111dd535e24d39c8853f14Michael Kolb return false; 3491373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3501373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3511373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 3521373b98135b2854578111dd535e24d39c8853f14Michael Kolb * enter a slice for a view 3531373b98135b2854578111dd535e24d39c8853f14Michael Kolb * updates model only 3541373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @param item 3551373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 3561373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void onEnter(PieItem item) { 3571373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mCurrentItem != null) { 3581373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem.setSelected(false); 3591373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3602d3af28f91481d7f3887cb0bb9c5d06375baf787Michael Kolb if (item != null && item.isEnabled()) { 3611373b98135b2854578111dd535e24d39c8853f14Michael Kolb item.setSelected(true); 3621373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = item; 3631373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((mCurrentItem != mOpenItem) && mCurrentItem.hasItems()) { 3641373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.sendEmptyMessageDelayed(MSG_SUBMENU, PIE_OPEN_DELAY); 3651373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3661373b98135b2854578111dd535e24d39c8853f14Michael Kolb } else { 3671373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = null; 3681373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3691373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3701373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3711373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void deselect() { 3721373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mCurrentItem != null) { 3731373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem.setSelected(false); 3741373b98135b2854578111dd535e24d39c8853f14Michael Kolb mHandler.removeMessages(MSG_SUBMENU); 3751373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3761373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (mOpenItem != null) { 3771373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpenItem = null; 3781373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3791373b98135b2854578111dd535e24d39c8853f14Michael Kolb mCurrentItem = null; 3801373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3811373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3821373b98135b2854578111dd535e24d39c8853f14Michael Kolb private void openCurrentItem() { 3831373b98135b2854578111dd535e24d39c8853f14Michael Kolb if ((mCurrentItem != null) && mCurrentItem.hasItems()) { 3841373b98135b2854578111dd535e24d39c8853f14Michael Kolb mOpenItem = mCurrentItem; 3851373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3861373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 3871373b98135b2854578111dd535e24d39c8853f14Michael Kolb 3881373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PointF getPolar(float x, float y) { 3891373b98135b2854578111dd535e24d39c8853f14Michael Kolb PointF res = new PointF(); 3901373b98135b2854578111dd535e24d39c8853f14Michael Kolb // get angle and radius from x/y 3911373b98135b2854578111dd535e24d39c8853f14Michael Kolb res.x = (float) Math.PI / 2; 3921373b98135b2854578111dd535e24d39c8853f14Michael Kolb x = x - mCenter.x; 3931373b98135b2854578111dd535e24d39c8853f14Michael Kolb y = mCenter.y - y; 3941373b98135b2854578111dd535e24d39c8853f14Michael Kolb res.y = (float) Math.sqrt(x * x + y * y) + mTouchOffset; 3951373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (x != 0) { 3961373b98135b2854578111dd535e24d39c8853f14Michael Kolb res.x = (float) Math.atan2(y, x); 397b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb if (res.x < 0) { 398b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb res.x = (float) (2 * Math.PI + res.x); 399b5b59b88683823d70faac7b3454519d53c51180bMichael Kolb } 4001373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4011373b98135b2854578111dd535e24d39c8853f14Michael Kolb return res; 4021373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4031373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4041373b98135b2854578111dd535e24d39c8853f14Michael Kolb /** 4051373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @param polar x: angle, y: dist 4061373b98135b2854578111dd535e24d39c8853f14Michael Kolb * @return the item at angle/dist or null 4071373b98135b2854578111dd535e24d39c8853f14Michael Kolb */ 4081373b98135b2854578111dd535e24d39c8853f14Michael Kolb private PieItem findItem(PointF polar) { 4091373b98135b2854578111dd535e24d39c8853f14Michael Kolb // find the matching item: 4101373b98135b2854578111dd535e24d39c8853f14Michael Kolb List<PieItem> items = (mOpenItem != null) ? mOpenItem.getItems() : mItems; 4111373b98135b2854578111dd535e24d39c8853f14Michael Kolb for (PieItem item : items) { 4121373b98135b2854578111dd535e24d39c8853f14Michael Kolb if (inside(polar, mTouchOffset, item)) { 4131373b98135b2854578111dd535e24d39c8853f14Michael Kolb return item; 4141373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4151373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4161373b98135b2854578111dd535e24d39c8853f14Michael Kolb return null; 4171373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4181373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4191373b98135b2854578111dd535e24d39c8853f14Michael Kolb private boolean inside(PointF polar, float offset, PieItem item) { 4201373b98135b2854578111dd535e24d39c8853f14Michael Kolb return (item.getInnerRadius() < polar.y + offset) 4211373b98135b2854578111dd535e24d39c8853f14Michael Kolb && (item.getOuterRadius() > polar.y + offset) 4221373b98135b2854578111dd535e24d39c8853f14Michael Kolb && (item.getStartAngle() < polar.x) 4231373b98135b2854578111dd535e24d39c8853f14Michael Kolb && (item.getStartAngle() + item.getSweep() > polar.x); 4241373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4251373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4261373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 4271373b98135b2854578111dd535e24d39c8853f14Michael Kolb public boolean handlesTouch() { 4281373b98135b2854578111dd535e24d39c8853f14Michael Kolb return true; 4291373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4301373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4311373b98135b2854578111dd535e24d39c8853f14Michael Kolb @Override 4321373b98135b2854578111dd535e24d39c8853f14Michael Kolb public void layout(int l, int t, int r, int b) { 4331373b98135b2854578111dd535e24d39c8853f14Michael Kolb super.layout(l, t, r, b); 4341373b98135b2854578111dd535e24d39c8853f14Michael Kolb } 4351373b98135b2854578111dd535e24d39c8853f14Michael Kolb 4361373b98135b2854578111dd535e24d39c8853f14Michael Kolb} 437