Home | History | Annotate | Download | only in statusbar 
      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 
     17 package com.android.systemui.statusbar;
     18 
     19 import android.content.Context;
     20 import android.graphics.Canvas;
     21 import android.graphics.Rect;
     22 import android.graphics.drawable.AnimatedVectorDrawable;
     23 import android.graphics.drawable.Drawable;
     24 import android.os.SystemClock;
     25 import android.util.AttributeSet;
     26 import android.view.Choreographer;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 import android.view.ViewRootImpl;
     30 import android.widget.Button;
     31 import com.android.systemui.R;
     32 import com.android.systemui.statusbar.stack.NotificationStackScrollLayout;
     33 
     34 public class DismissViewButton extends Button {
     35     private AnimatedVectorDrawable mAnimatedDismissDrawable;
     36     private final Drawable mStaticDismissDrawable;
     37     private Drawable mActiveDrawable;
     38 
     39     public DismissViewButton(Context context) {
     40         this(context, null);
     41     }
     42 
     43     public DismissViewButton(Context context, AttributeSet attrs) {
     44         this(context, attrs, 0);
     45     }
     46 
     47     public DismissViewButton(Context context, AttributeSet attrs, int defStyleAttr) {
     48         this(context, attrs, defStyleAttr, 0);
     49     }
     50 
     51     public DismissViewButton(Context context, AttributeSet attrs, int defStyleAttr,
     52             int defStyleRes) {
     53         super(context, attrs, defStyleAttr, defStyleRes);
     54         mAnimatedDismissDrawable = (AnimatedVectorDrawable) getContext().getResources().getDrawable(
     55                 R.drawable.dismiss_all_shape_animation).mutate();
     56         mAnimatedDismissDrawable.setCallback(this);
     57         mAnimatedDismissDrawable.setBounds(0,
     58                 0,
     59                 mAnimatedDismissDrawable.getIntrinsicWidth(),
     60                 mAnimatedDismissDrawable.getIntrinsicHeight());
     61         mStaticDismissDrawable = getContext().getResources().getDrawable(
     62                 R.drawable.dismiss_all_shape);
     63         mStaticDismissDrawable.setBounds(0,
     64                 0,
     65                 mStaticDismissDrawable.getIntrinsicWidth(),
     66                 mStaticDismissDrawable.getIntrinsicHeight());
     67         mStaticDismissDrawable.setCallback(this);
     68         mActiveDrawable = mStaticDismissDrawable;
     69     }
     70 
     71     @Override
     72     protected void onDraw(Canvas canvas) {
     73         super.onDraw(canvas);
     74         canvas.save();
     75         int drawableHeight = mActiveDrawable.getBounds().height();
     76         boolean isRtl = (getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
     77         int dx = isRtl ? getWidth() / 2 + drawableHeight / 2 : getWidth() / 2 - drawableHeight / 2;
     78         canvas.translate(dx, getHeight() / 2.0f + drawableHeight /
     79                 2.0f);
     80         canvas.scale(isRtl ? -1.0f : 1.0f, -1.0f);
     81         mActiveDrawable.draw(canvas);
     82         canvas.restore();
     83     }
     84 
     85     @Override
     86     public boolean performClick() {
     87         if (!mAnimatedDismissDrawable.isRunning()) {
     88             mActiveDrawable = mAnimatedDismissDrawable;
     89             mAnimatedDismissDrawable.start();
     90         }
     91         return super.performClick();
     92     }
     93 
     94     @Override
     95     protected boolean verifyDrawable(Drawable who) {
     96         return super.verifyDrawable(who)
     97                 || who == mAnimatedDismissDrawable
     98                 || who == mStaticDismissDrawable;
     99     }
    100 
    101     @Override
    102     public boolean hasOverlappingRendering() {
    103         return false;
    104     }
    105 
    106     /**
    107      * This method returns the drawing rect for the view which is different from the regular
    108      * drawing rect, since we layout all children in the {@link NotificationStackScrollLayout} at
    109      * position 0 and usually the translation is neglected. The standard implementation doesn't
    110      * account for translation.
    111      *
    112      * @param outRect The (scrolled) drawing bounds of the view.
    113      */
    114     @Override
    115     public void getDrawingRect(Rect outRect) {
    116         super.getDrawingRect(outRect);
    117         float translationX = ((ViewGroup) mParent).getTranslationX();
    118         float translationY = ((ViewGroup) mParent).getTranslationY();
    119         outRect.left += translationX;
    120         outRect.right += translationX;
    121         outRect.top += translationY;
    122         outRect.bottom += translationY;
    123     }
    124 
    125     public void showButton() {
    126         mActiveDrawable = mStaticDismissDrawable;
    127         invalidate();
    128     }
    129 
    130     /**
    131      * @return Whether the button is currently static and not being animated.
    132      */
    133     public boolean isButtonStatic() {
    134         return mActiveDrawable == mStaticDismissDrawable;
    135     }
    136 }
    137