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      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.util.AttributeSet;
     25 import android.view.View;
     26 import android.view.ViewGroup;
     27 import android.widget.Button;
     28 import com.android.systemui.R;
     29 import com.android.systemui.statusbar.stack.NotificationStackScrollLayout;
     30 
     31 public class DismissViewButton extends Button {
     32     private AnimatedVectorDrawable mAnimatedDismissDrawable;
     33     private final Drawable mStaticDismissDrawable;
     34     private Drawable mActiveDrawable;
     35 
     36     public DismissViewButton(Context context) {
     37         this(context, null);
     38     }
     39 
     40     public DismissViewButton(Context context, AttributeSet attrs) {
     41         this(context, attrs, 0);
     42     }
     43 
     44     public DismissViewButton(Context context, AttributeSet attrs, int defStyleAttr) {
     45         this(context, attrs, defStyleAttr, 0);
     46     }
     47 
     48     public DismissViewButton(Context context, AttributeSet attrs, int defStyleAttr,
     49             int defStyleRes) {
     50         super(context, attrs, defStyleAttr, defStyleRes);
     51         mAnimatedDismissDrawable = (AnimatedVectorDrawable) getContext().getDrawable(
     52                 R.drawable.dismiss_all_shape_animation).mutate();
     53         mAnimatedDismissDrawable.setCallback(this);
     54         mAnimatedDismissDrawable.setBounds(0,
     55                 0,
     56                 mAnimatedDismissDrawable.getIntrinsicWidth(),
     57                 mAnimatedDismissDrawable.getIntrinsicHeight());
     58         mStaticDismissDrawable = getContext().getDrawable(R.drawable.dismiss_all_shape);
     59         mStaticDismissDrawable.setBounds(0,
     60                 0,
     61                 mStaticDismissDrawable.getIntrinsicWidth(),
     62                 mStaticDismissDrawable.getIntrinsicHeight());
     63         mStaticDismissDrawable.setCallback(this);
     64         mActiveDrawable = mStaticDismissDrawable;
     65     }
     66 
     67     @Override
     68     protected void onDraw(Canvas canvas) {
     69         super.onDraw(canvas);
     70         canvas.save();
     71         int drawableHeight = mActiveDrawable.getBounds().height();
     72         boolean isRtl = (getLayoutDirection() == View.LAYOUT_DIRECTION_RTL);
     73         int dx = isRtl ? getWidth() / 2 + drawableHeight / 2 : getWidth() / 2 - drawableHeight / 2;
     74         canvas.translate(dx, getHeight() / 2.0f + drawableHeight /
     75                 2.0f);
     76         canvas.scale(isRtl ? -1.0f : 1.0f, -1.0f);
     77         mActiveDrawable.draw(canvas);
     78         canvas.restore();
     79     }
     80 
     81     @Override
     82     public boolean performClick() {
     83         if (!mAnimatedDismissDrawable.isRunning()) {
     84             mActiveDrawable = mAnimatedDismissDrawable;
     85             mAnimatedDismissDrawable.start();
     86         }
     87         return super.performClick();
     88     }
     89 
     90     @Override
     91     protected boolean verifyDrawable(Drawable who) {
     92         return super.verifyDrawable(who)
     93                 || who == mAnimatedDismissDrawable
     94                 || who == mStaticDismissDrawable;
     95     }
     96 
     97     @Override
     98     public boolean hasOverlappingRendering() {
     99         return false;
    100     }
    101 
    102     /**
    103      * This method returns the drawing rect for the view which is different from the regular
    104      * drawing rect, since we layout all children in the {@link NotificationStackScrollLayout} at
    105      * position 0 and usually the translation is neglected. The standard implementation doesn't
    106      * account for translation.
    107      *
    108      * @param outRect The (scrolled) drawing bounds of the view.
    109      */
    110     @Override
    111     public void getDrawingRect(Rect outRect) {
    112         super.getDrawingRect(outRect);
    113         float translationX = ((ViewGroup) mParent).getTranslationX();
    114         float translationY = ((ViewGroup) mParent).getTranslationY();
    115         outRect.left += translationX;
    116         outRect.right += translationX;
    117         outRect.top += translationY;
    118         outRect.bottom += translationY;
    119     }
    120 
    121     public void showButton() {
    122         mActiveDrawable = mStaticDismissDrawable;
    123         invalidate();
    124     }
    125 
    126     /**
    127      * @return Whether the button is currently static and not being animated.
    128      */
    129     public boolean isButtonStatic() {
    130         return mActiveDrawable == mStaticDismissDrawable;
    131     }
    132 }
    133