DragLayer.java revision 6788269814a678af976dfc7d6135993e172ce586
131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project/* 231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * 431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * you may not use this file except in compliance with the License. 631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * You may obtain a copy of the License at 731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * 831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * 1031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 1131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 1231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * See the License for the specific language governing permissions and 1431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * limitations under the License. 1531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project */ 1631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project 17a5902524d4403885eb4c50360bf3465c6be796efJoe Onoratopackage com.android.launcher2; 1831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project 196788269814a678af976dfc7d6135993e172ce586Adam Cohenimport java.util.ArrayList; 20d4844c3e731b00547a31f23a00f8bd4a271e2b62Adam Cohen 2131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.content.Context; 22120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohenimport android.graphics.Bitmap; 236788269814a678af976dfc7d6135993e172ce586Adam Cohenimport android.graphics.Rect; 2431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.util.AttributeSet; 2531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.view.KeyEvent; 260e26059548e429e5d1c973bebe4c561bead2926fMichael Jurkaimport android.view.MotionEvent; 27ea3763c2672f77539538af8cdd395ad97058eaabRomain Guyimport android.view.View; 2831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Projectimport android.widget.FrameLayout; 29120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohenimport android.widget.ImageView; 3031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project 316788269814a678af976dfc7d6135993e172ce586Adam Cohenimport com.android.launcher.R; 326788269814a678af976dfc7d6135993e172ce586Adam Cohen 3331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project/** 340e26059548e429e5d1c973bebe4c561bead2926fMichael Jurka * A ViewGroup that coordinates dragging across its descendants 3531dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project */ 3600acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onoratopublic class DragLayer extends FrameLayout { 37120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen private DragController mDragController; 38120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen private int[] mTmpXY = new int[2]; 3931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project 406788269814a678af976dfc7d6135993e172ce586Adam Cohen // Variables relating to resizing widgets 416788269814a678af976dfc7d6135993e172ce586Adam Cohen private final ArrayList<AppWidgetResizeFrame> mResizeFrames = 426788269814a678af976dfc7d6135993e172ce586Adam Cohen new ArrayList<AppWidgetResizeFrame>(); 436788269814a678af976dfc7d6135993e172ce586Adam Cohen private AppWidgetResizeFrame mCurrentResizeFrame; 446788269814a678af976dfc7d6135993e172ce586Adam Cohen private int mXDown, mYDown; 456788269814a678af976dfc7d6135993e172ce586Adam Cohen 4631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project /** 4731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * Used to create a new DragLayer from XML. 4831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * 4931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project * @param context The application's context. 500e26059548e429e5d1c973bebe4c561bead2926fMichael Jurka * @param attrs The attributes set containing the Workspace's customization values. 5131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project */ 5231dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project public DragLayer(Context context, AttributeSet attrs) { 5331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project super(context, attrs); 54be62afa34d58edab0fc9ba7499f0dd543039c903Winson Chung 55be62afa34d58edab0fc9ba7499f0dd543039c903Winson Chung // Disable multitouch across the workspace/all apps/customize tray 56be62afa34d58edab0fc9ba7499f0dd543039c903Winson Chung setMotionEventSplittingEnabled(false); 5731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project } 5831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project 5900acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato public void setDragController(DragController controller) { 6000acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato mDragController = controller; 6131dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project } 6200acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato 6331dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project @Override 6431dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project public boolean dispatchKeyEvent(KeyEvent event) { 6500acb123c5100f06b8e89e8ec8978ebafc6f6d26Joe Onorato return mDragController.dispatchKeyEvent(event) || super.dispatchKeyEvent(event); 6631dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project } 6731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project 686788269814a678af976dfc7d6135993e172ce586Adam Cohen private boolean handleTouchDown(MotionEvent ev) { 696788269814a678af976dfc7d6135993e172ce586Adam Cohen Rect hitRect = new Rect(); 706788269814a678af976dfc7d6135993e172ce586Adam Cohen int x = (int) ev.getX(); 716788269814a678af976dfc7d6135993e172ce586Adam Cohen int y = (int) ev.getY(); 726788269814a678af976dfc7d6135993e172ce586Adam Cohen 736788269814a678af976dfc7d6135993e172ce586Adam Cohen for (AppWidgetResizeFrame child: mResizeFrames) { 746788269814a678af976dfc7d6135993e172ce586Adam Cohen child.getHitRect(hitRect); 756788269814a678af976dfc7d6135993e172ce586Adam Cohen if (hitRect.contains(x, y)) { 766788269814a678af976dfc7d6135993e172ce586Adam Cohen if (child.beginResizeIfPointInRegion(x - child.getLeft(), y - child.getTop())) { 776788269814a678af976dfc7d6135993e172ce586Adam Cohen mCurrentResizeFrame = child; 786788269814a678af976dfc7d6135993e172ce586Adam Cohen mXDown = x; 796788269814a678af976dfc7d6135993e172ce586Adam Cohen mYDown = y; 806788269814a678af976dfc7d6135993e172ce586Adam Cohen requestDisallowInterceptTouchEvent(true); 816788269814a678af976dfc7d6135993e172ce586Adam Cohen return true; 826788269814a678af976dfc7d6135993e172ce586Adam Cohen } 836788269814a678af976dfc7d6135993e172ce586Adam Cohen } 846788269814a678af976dfc7d6135993e172ce586Adam Cohen } 856788269814a678af976dfc7d6135993e172ce586Adam Cohen return false; 866788269814a678af976dfc7d6135993e172ce586Adam Cohen } 876788269814a678af976dfc7d6135993e172ce586Adam Cohen 8831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project @Override 8931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project public boolean onInterceptTouchEvent(MotionEvent ev) { 906788269814a678af976dfc7d6135993e172ce586Adam Cohen if (ev.getAction() == MotionEvent.ACTION_DOWN) { 916788269814a678af976dfc7d6135993e172ce586Adam Cohen if (handleTouchDown(ev)) { 926788269814a678af976dfc7d6135993e172ce586Adam Cohen return true; 93d1837cc69eb222371afdd30890f7215d117510f2Patrick Dubroy } 941b607ed454ed22c2fd855cb3e428376520fb2388Adam Cohen } 956788269814a678af976dfc7d6135993e172ce586Adam Cohen clearAllResizeFrames(); 964db52312c10e822162a21c60404f06f6e507f0d6Joe Onorato return mDragController.onInterceptTouchEvent(ev); 9731dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project } 9831dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project 9931dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project @Override 10031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project public boolean onTouchEvent(MotionEvent ev) { 1016788269814a678af976dfc7d6135993e172ce586Adam Cohen boolean handled = false; 1026788269814a678af976dfc7d6135993e172ce586Adam Cohen int action = ev.getAction(); 1036788269814a678af976dfc7d6135993e172ce586Adam Cohen 1046788269814a678af976dfc7d6135993e172ce586Adam Cohen int x = (int) ev.getX(); 1056788269814a678af976dfc7d6135993e172ce586Adam Cohen int y = (int) ev.getY(); 1066788269814a678af976dfc7d6135993e172ce586Adam Cohen 1076788269814a678af976dfc7d6135993e172ce586Adam Cohen if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1086788269814a678af976dfc7d6135993e172ce586Adam Cohen if (ev.getAction() == MotionEvent.ACTION_DOWN) { 1096788269814a678af976dfc7d6135993e172ce586Adam Cohen if (handleTouchDown(ev)) { 1106788269814a678af976dfc7d6135993e172ce586Adam Cohen return true; 1116788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1126788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1136788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1146788269814a678af976dfc7d6135993e172ce586Adam Cohen 1156788269814a678af976dfc7d6135993e172ce586Adam Cohen if (mCurrentResizeFrame != null) { 1166788269814a678af976dfc7d6135993e172ce586Adam Cohen handled = true; 1176788269814a678af976dfc7d6135993e172ce586Adam Cohen switch (action) { 1186788269814a678af976dfc7d6135993e172ce586Adam Cohen case MotionEvent.ACTION_MOVE: 1196788269814a678af976dfc7d6135993e172ce586Adam Cohen mCurrentResizeFrame.visualizeResizeForDelta(x - mXDown, y - mYDown); 1206788269814a678af976dfc7d6135993e172ce586Adam Cohen break; 1216788269814a678af976dfc7d6135993e172ce586Adam Cohen case MotionEvent.ACTION_CANCEL: 1226788269814a678af976dfc7d6135993e172ce586Adam Cohen case MotionEvent.ACTION_UP: 1236788269814a678af976dfc7d6135993e172ce586Adam Cohen mCurrentResizeFrame.commitResizeForDelta(x - mXDown, y - mYDown); 1246788269814a678af976dfc7d6135993e172ce586Adam Cohen mCurrentResizeFrame = null; 1256788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1266788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1276788269814a678af976dfc7d6135993e172ce586Adam Cohen if (handled) return true; 1284db52312c10e822162a21c60404f06f6e507f0d6Joe Onorato return mDragController.onTouchEvent(ev); 12991a9c9636f10f1e12cd1f660b2e330634fbdc7dcRomain Guy } 130ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy 131ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy @Override 132ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy public boolean dispatchUnhandledMove(View focused, int direction) { 133ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy return mDragController.dispatchUnhandledMove(focused, direction); 134ea3763c2672f77539538af8cdd395ad97058eaabRomain Guy } 135120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen 136120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen public View createDragView(Bitmap b, int xPos, int yPos) { 137120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen ImageView imageView = new ImageView(mContext); 138120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen imageView.setImageBitmap(b); 139120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen imageView.setX(xPos); 140120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen imageView.setY(yPos); 141120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen addView(imageView, b.getWidth(), b.getHeight()); 142120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen 143120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen return imageView; 144120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen } 145120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen 146120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen public View createDragView(View v) { 147120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen v.getLocationOnScreen(mTmpXY); 148120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen return createDragView(mDragController.getViewBitmap(v), mTmpXY[0], mTmpXY[1]); 149120980bd00f5eecec5717f49a3d7db96571025a9Adam Cohen } 1506788269814a678af976dfc7d6135993e172ce586Adam Cohen 1516788269814a678af976dfc7d6135993e172ce586Adam Cohen public static class LayoutParams extends FrameLayout.LayoutParams { 1526788269814a678af976dfc7d6135993e172ce586Adam Cohen public int x, y; 1536788269814a678af976dfc7d6135993e172ce586Adam Cohen public boolean customPosition = false; 1546788269814a678af976dfc7d6135993e172ce586Adam Cohen 1556788269814a678af976dfc7d6135993e172ce586Adam Cohen /** 1566788269814a678af976dfc7d6135993e172ce586Adam Cohen * {@inheritDoc} 1576788269814a678af976dfc7d6135993e172ce586Adam Cohen */ 1586788269814a678af976dfc7d6135993e172ce586Adam Cohen public LayoutParams(int width, int height) { 1596788269814a678af976dfc7d6135993e172ce586Adam Cohen super(width, height); 1606788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1616788269814a678af976dfc7d6135993e172ce586Adam Cohen 1626788269814a678af976dfc7d6135993e172ce586Adam Cohen public void setWidth(int width) { 1636788269814a678af976dfc7d6135993e172ce586Adam Cohen this.width = width; 1646788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1656788269814a678af976dfc7d6135993e172ce586Adam Cohen 1666788269814a678af976dfc7d6135993e172ce586Adam Cohen public int getWidth() { 1676788269814a678af976dfc7d6135993e172ce586Adam Cohen return width; 1686788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1696788269814a678af976dfc7d6135993e172ce586Adam Cohen 1706788269814a678af976dfc7d6135993e172ce586Adam Cohen public void setHeight(int height) { 1716788269814a678af976dfc7d6135993e172ce586Adam Cohen this.height = height; 1726788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1736788269814a678af976dfc7d6135993e172ce586Adam Cohen 1746788269814a678af976dfc7d6135993e172ce586Adam Cohen public int getHeight() { 1756788269814a678af976dfc7d6135993e172ce586Adam Cohen return height; 1766788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1776788269814a678af976dfc7d6135993e172ce586Adam Cohen 1786788269814a678af976dfc7d6135993e172ce586Adam Cohen public void setX(int x) { 1796788269814a678af976dfc7d6135993e172ce586Adam Cohen this.x = x; 1806788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1816788269814a678af976dfc7d6135993e172ce586Adam Cohen 1826788269814a678af976dfc7d6135993e172ce586Adam Cohen public int getX() { 1836788269814a678af976dfc7d6135993e172ce586Adam Cohen return x; 1846788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1856788269814a678af976dfc7d6135993e172ce586Adam Cohen 1866788269814a678af976dfc7d6135993e172ce586Adam Cohen public void setY(int y) { 1876788269814a678af976dfc7d6135993e172ce586Adam Cohen this.y = y; 1886788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1896788269814a678af976dfc7d6135993e172ce586Adam Cohen 1906788269814a678af976dfc7d6135993e172ce586Adam Cohen public int getY() { 1916788269814a678af976dfc7d6135993e172ce586Adam Cohen return y; 1926788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1936788269814a678af976dfc7d6135993e172ce586Adam Cohen } 1946788269814a678af976dfc7d6135993e172ce586Adam Cohen 1956788269814a678af976dfc7d6135993e172ce586Adam Cohen protected void onLayout(boolean changed, int l, int t, int r, int b) { 1966788269814a678af976dfc7d6135993e172ce586Adam Cohen super.onLayout(changed, l, t, r, b); 1976788269814a678af976dfc7d6135993e172ce586Adam Cohen int count = getChildCount(); 1986788269814a678af976dfc7d6135993e172ce586Adam Cohen for (int i = 0; i < count; i++) { 1996788269814a678af976dfc7d6135993e172ce586Adam Cohen View child = getChildAt(i); 2006788269814a678af976dfc7d6135993e172ce586Adam Cohen final FrameLayout.LayoutParams flp = (FrameLayout.LayoutParams) child.getLayoutParams(); 2016788269814a678af976dfc7d6135993e172ce586Adam Cohen if (flp instanceof LayoutParams) { 2026788269814a678af976dfc7d6135993e172ce586Adam Cohen final LayoutParams lp = (LayoutParams) flp; 2036788269814a678af976dfc7d6135993e172ce586Adam Cohen if (lp.customPosition) { 2046788269814a678af976dfc7d6135993e172ce586Adam Cohen child.layout(lp.x, lp.y, lp.x + lp.width, lp.y + lp.height); 2056788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2066788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2076788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2086788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2096788269814a678af976dfc7d6135993e172ce586Adam Cohen 2106788269814a678af976dfc7d6135993e172ce586Adam Cohen public void clearAllResizeFrames() { 2116788269814a678af976dfc7d6135993e172ce586Adam Cohen if (mResizeFrames.size() > 0) { 2126788269814a678af976dfc7d6135993e172ce586Adam Cohen for (AppWidgetResizeFrame frame: mResizeFrames) { 2136788269814a678af976dfc7d6135993e172ce586Adam Cohen removeView(frame); 2146788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2156788269814a678af976dfc7d6135993e172ce586Adam Cohen mResizeFrames.clear(); 2166788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2176788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2186788269814a678af976dfc7d6135993e172ce586Adam Cohen 2196788269814a678af976dfc7d6135993e172ce586Adam Cohen public boolean hasResizeFrames() { 2206788269814a678af976dfc7d6135993e172ce586Adam Cohen return mResizeFrames.size() > 0; 2216788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2226788269814a678af976dfc7d6135993e172ce586Adam Cohen 2236788269814a678af976dfc7d6135993e172ce586Adam Cohen public boolean isWidgetBeingResized() { 2246788269814a678af976dfc7d6135993e172ce586Adam Cohen return mCurrentResizeFrame != null; 2256788269814a678af976dfc7d6135993e172ce586Adam Cohen } 2266788269814a678af976dfc7d6135993e172ce586Adam Cohen 2276788269814a678af976dfc7d6135993e172ce586Adam Cohen public void addResizeFrame(ItemInfo itemInfo, LauncherAppWidgetHostView widget, 2286788269814a678af976dfc7d6135993e172ce586Adam Cohen CellLayout cellLayout) { 2296788269814a678af976dfc7d6135993e172ce586Adam Cohen AppWidgetResizeFrame resizeFrame = new AppWidgetResizeFrame(getContext(), 2306788269814a678af976dfc7d6135993e172ce586Adam Cohen itemInfo, widget, cellLayout, this); 2316788269814a678af976dfc7d6135993e172ce586Adam Cohen 2326788269814a678af976dfc7d6135993e172ce586Adam Cohen LayoutParams lp = new LayoutParams(-1, -1); 2336788269814a678af976dfc7d6135993e172ce586Adam Cohen lp.customPosition = true; 2346788269814a678af976dfc7d6135993e172ce586Adam Cohen 2356788269814a678af976dfc7d6135993e172ce586Adam Cohen addView(resizeFrame, lp); 2366788269814a678af976dfc7d6135993e172ce586Adam Cohen mResizeFrames.add(resizeFrame); 2376788269814a678af976dfc7d6135993e172ce586Adam Cohen 2386788269814a678af976dfc7d6135993e172ce586Adam Cohen resizeFrame.snapToWidget(false); 2396788269814a678af976dfc7d6135993e172ce586Adam Cohen } 24031dd503c6aa69018e694d91724d46db49ea09327The Android Open Source Project} 241