| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.systemui.statusbar.policy; |
| |
| import android.animation.AnimatorSet; |
| import android.animation.ObjectAnimator; |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.drawable.Drawable; |
| import android.graphics.Canvas; |
| import android.graphics.RectF; |
| import android.os.RemoteException; |
| import android.os.SystemClock; |
| import android.os.ServiceManager; |
| import android.util.AttributeSet; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.view.HapticFeedbackConstants; |
| import android.view.IWindowManager; |
| import android.view.InputDevice; |
| import android.view.KeyCharacterMap; |
| import android.view.KeyEvent; |
| import android.view.MotionEvent; |
| import android.view.SoundEffectConstants; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| import android.widget.ImageView; |
| |
| import com.android.systemui.R; |
| |
| public class KeyButtonView extends ImageView { |
| private static final String TAG = "StatusBar.KeyButtonView"; |
| |
| final float GLOW_MAX_SCALE_FACTOR = 1.8f; |
| final float BUTTON_QUIESCENT_ALPHA = 0.6f; |
| |
| IWindowManager mWindowManager; |
| long mDownTime; |
| int mCode; |
| int mTouchSlop; |
| Drawable mGlowBG; |
| float mGlowAlpha = 0f, mGlowScale = 1f, mDrawingAlpha = 1f; |
| boolean mSupportsLongpress = true; |
| RectF mRect = new RectF(0f,0f,0f,0f); |
| AnimatorSet mPressedAnim; |
| |
| Runnable mCheckLongPress = new Runnable() { |
| public void run() { |
| if (isPressed()) { |
| // Slog.d("KeyButtonView", "longpressed: " + this); |
| if (mCode != 0) { |
| sendEvent(KeyEvent.ACTION_DOWN, KeyEvent.FLAG_LONG_PRESS); |
| sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_LONG_CLICKED); |
| } else { |
| // Just an old-fashioned ImageView |
| performLongClick(); |
| } |
| } |
| } |
| }; |
| |
| public KeyButtonView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public KeyButtonView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.KeyButtonView, |
| defStyle, 0); |
| |
| mCode = a.getInteger(R.styleable.KeyButtonView_keyCode, 0); |
| |
| mSupportsLongpress = a.getBoolean(R.styleable.KeyButtonView_keyRepeat, true); |
| |
| mGlowBG = a.getDrawable(R.styleable.KeyButtonView_glowBackground); |
| if (mGlowBG != null) { |
| setDrawingAlpha(BUTTON_QUIESCENT_ALPHA); |
| } |
| |
| a.recycle(); |
| |
| mWindowManager = IWindowManager.Stub.asInterface( |
| ServiceManager.getService(Context.WINDOW_SERVICE)); |
| |
| setClickable(true); |
| mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop(); |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| if (mGlowBG != null) { |
| canvas.save(); |
| final int w = getWidth(); |
| final int h = getHeight(); |
| canvas.scale(mGlowScale, mGlowScale, w*0.5f, h*0.5f); |
| mGlowBG.setBounds(0, 0, w, h); |
| mGlowBG.setAlpha((int)(mDrawingAlpha * mGlowAlpha * 255)); |
| mGlowBG.draw(canvas); |
| canvas.restore(); |
| mRect.right = w; |
| mRect.bottom = h; |
| } |
| super.onDraw(canvas); |
| } |
| |
| public float getDrawingAlpha() { |
| if (mGlowBG == null) return 0; |
| return mDrawingAlpha; |
| } |
| |
| public void setDrawingAlpha(float x) { |
| if (mGlowBG == null) return; |
| // Calling setAlpha(int), which is an ImageView-specific |
| // method that's different from setAlpha(float). This sets |
| // the alpha on this ImageView's drawable directly |
| setAlpha((int) (x * 255)); |
| mDrawingAlpha = x; |
| } |
| |
| public float getGlowAlpha() { |
| if (mGlowBG == null) return 0; |
| return mGlowAlpha; |
| } |
| |
| public void setGlowAlpha(float x) { |
| if (mGlowBG == null) return; |
| mGlowAlpha = x; |
| invalidate(); |
| } |
| |
| public float getGlowScale() { |
| if (mGlowBG == null) return 0; |
| return mGlowScale; |
| } |
| |
| public void setGlowScale(float x) { |
| if (mGlowBG == null) return; |
| mGlowScale = x; |
| final float w = getWidth(); |
| final float h = getHeight(); |
| if (GLOW_MAX_SCALE_FACTOR <= 1.0f) { |
| // this only works if we know the glow will never leave our bounds |
| invalidate(); |
| } else { |
| final float rx = (w * (GLOW_MAX_SCALE_FACTOR - 1.0f)) / 2.0f + 1.0f; |
| final float ry = (h * (GLOW_MAX_SCALE_FACTOR - 1.0f)) / 2.0f + 1.0f; |
| com.android.systemui.SwipeHelper.invalidateGlobalRegion( |
| this, |
| new RectF(getLeft() - rx, |
| getTop() - ry, |
| getRight() + rx, |
| getBottom() + ry)); |
| |
| // also invalidate our immediate parent to help avoid situations where nearby glows |
| // interfere |
| ((View)getParent()).invalidate(); |
| } |
| } |
| |
| public void setPressed(boolean pressed) { |
| if (mGlowBG != null) { |
| if (pressed != isPressed()) { |
| if (mPressedAnim != null && mPressedAnim.isRunning()) { |
| mPressedAnim.cancel(); |
| } |
| final AnimatorSet as = mPressedAnim = new AnimatorSet(); |
| if (pressed) { |
| if (mGlowScale < GLOW_MAX_SCALE_FACTOR) |
| mGlowScale = GLOW_MAX_SCALE_FACTOR; |
| if (mGlowAlpha < BUTTON_QUIESCENT_ALPHA) |
| mGlowAlpha = BUTTON_QUIESCENT_ALPHA; |
| setDrawingAlpha(1f); |
| as.playTogether( |
| ObjectAnimator.ofFloat(this, "glowAlpha", 1f), |
| ObjectAnimator.ofFloat(this, "glowScale", GLOW_MAX_SCALE_FACTOR) |
| ); |
| as.setDuration(50); |
| } else { |
| as.playTogether( |
| ObjectAnimator.ofFloat(this, "glowAlpha", 0f), |
| ObjectAnimator.ofFloat(this, "glowScale", 1f), |
| ObjectAnimator.ofFloat(this, "drawingAlpha", BUTTON_QUIESCENT_ALPHA) |
| ); |
| as.setDuration(500); |
| } |
| as.start(); |
| } |
| } |
| super.setPressed(pressed); |
| } |
| |
| public boolean onTouchEvent(MotionEvent ev) { |
| final int action = ev.getAction(); |
| int x, y; |
| |
| switch (action) { |
| case MotionEvent.ACTION_DOWN: |
| //Slog.d("KeyButtonView", "press"); |
| mDownTime = SystemClock.uptimeMillis(); |
| setPressed(true); |
| if (mCode != 0) { |
| sendEvent(KeyEvent.ACTION_DOWN, 0, mDownTime); |
| } else { |
| // Provide the same haptic feedback that the system offers for virtual keys. |
| performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY); |
| } |
| if (mSupportsLongpress) { |
| removeCallbacks(mCheckLongPress); |
| postDelayed(mCheckLongPress, ViewConfiguration.getLongPressTimeout()); |
| } |
| break; |
| case MotionEvent.ACTION_MOVE: |
| x = (int)ev.getX(); |
| y = (int)ev.getY(); |
| setPressed(x >= -mTouchSlop |
| && x < getWidth() + mTouchSlop |
| && y >= -mTouchSlop |
| && y < getHeight() + mTouchSlop); |
| break; |
| case MotionEvent.ACTION_CANCEL: |
| setPressed(false); |
| if (mCode != 0) { |
| sendEvent(KeyEvent.ACTION_UP, KeyEvent.FLAG_CANCELED); |
| } |
| if (mSupportsLongpress) { |
| removeCallbacks(mCheckLongPress); |
| } |
| break; |
| case MotionEvent.ACTION_UP: |
| final boolean doIt = isPressed(); |
| setPressed(false); |
| if (mCode != 0) { |
| if (doIt) { |
| sendEvent(KeyEvent.ACTION_UP, 0); |
| sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_CLICKED); |
| playSoundEffect(SoundEffectConstants.CLICK); |
| } else { |
| sendEvent(KeyEvent.ACTION_UP, KeyEvent.FLAG_CANCELED); |
| } |
| } else { |
| // no key code, just a regular ImageView |
| if (doIt) { |
| performClick(); |
| } |
| } |
| if (mSupportsLongpress) { |
| removeCallbacks(mCheckLongPress); |
| } |
| break; |
| } |
| |
| return true; |
| } |
| |
| void sendEvent(int action, int flags) { |
| sendEvent(action, flags, SystemClock.uptimeMillis()); |
| } |
| |
| void sendEvent(int action, int flags, long when) { |
| final int repeatCount = (flags & KeyEvent.FLAG_LONG_PRESS) != 0 ? 1 : 0; |
| final KeyEvent ev = new KeyEvent(mDownTime, when, action, mCode, repeatCount, |
| 0, KeyCharacterMap.VIRTUAL_KEYBOARD, 0, |
| flags | KeyEvent.FLAG_FROM_SYSTEM | KeyEvent.FLAG_VIRTUAL_HARD_KEY, |
| InputDevice.SOURCE_KEYBOARD); |
| try { |
| //Slog.d(TAG, "injecting event " + ev); |
| mWindowManager.injectInputEventNoWait(ev); |
| } catch (RemoteException ex) { |
| // System process is dead |
| } |
| } |
| } |
| |
| |