ZoomButton.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.widget; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Handler; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.AttributeSet; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.GestureDetector; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.HapticFeedbackConstants; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.KeyEvent; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.MotionEvent; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.GestureDetector.SimpleOnGestureListener; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.view.View.OnLongClickListener; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class ZoomButton extends ImageButton implements OnLongClickListener { 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final Handler mHandler; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final Runnable mRunnable = new Runnable() { 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void run() { 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((mOnClickListener != null) && mIsInLongpress && isEnabled()) { 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mOnClickListener.onClick(ZoomButton.this); 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.postDelayed(this, mZoomSpeed); 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }; 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final GestureDetector mGestureDetector; 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private long mZoomSpeed = 1000; 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private boolean mIsInLongpress; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ZoomButton(Context context) { 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, null); 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ZoomButton(Context context, AttributeSet attrs) { 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this(context, attrs, 0); 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public ZoomButton(Context context, AttributeSet attrs, int defStyle) { 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super(context, attrs, defStyle); 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler = new Handler(); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGestureDetector = new GestureDetector(context, new SimpleOnGestureListener() { 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void onLongPress(MotionEvent e) { 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project onLongClick(ZoomButton.this); 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project }); 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setOnLongClickListener(this); 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onTouchEvent(MotionEvent event) { 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGestureDetector.onTouchEvent(event); 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((event.getAction() == MotionEvent.ACTION_CANCEL) 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project || (event.getAction() == MotionEvent.ACTION_UP)) { 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsInLongpress = false; 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onTouchEvent(event); 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setZoomSpeed(long speed) { 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mZoomSpeed = speed; 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onLongClick(View v) { 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsInLongpress = true; 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mHandler.post(mRunnable); 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean onKeyUp(int keyCode, KeyEvent event) { 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mIsInLongpress = false; 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.onKeyUp(keyCode, event); 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void setEnabled(boolean enabled) { 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!enabled) { 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* If we're being disabled reset the state back to unpressed 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * as disabled views don't get events and therefore we won't 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * get the up event to reset the state. 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project setPressed(false); 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project super.setEnabled(enabled); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @Override 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean dispatchUnhandledMove(View focused, int direction) { 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project clearFocus(); 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return super.dispatchUnhandledMove(focused, direction); 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 113