OLD | NEW |
(Empty) | |
| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 package org.chromium.chrome.browser.widget.newtab; |
| 6 |
| 7 import android.animation.Animator; |
| 8 import android.animation.AnimatorSet; |
| 9 import android.animation.ObjectAnimator; |
| 10 import android.content.Context; |
| 11 import android.graphics.Canvas; |
| 12 import android.graphics.drawable.Drawable; |
| 13 import android.util.AttributeSet; |
| 14 import android.util.Property; |
| 15 import android.widget.Button; |
| 16 |
| 17 import com.google.android.apps.chrome.R; |
| 18 |
| 19 import org.chromium.base.ApiCompatibilityUtils; |
| 20 |
| 21 import java.util.ArrayList; |
| 22 import java.util.List; |
| 23 |
| 24 /** |
| 25 * Button for creating new tabs. |
| 26 */ |
| 27 public class NewTabButton extends Button implements Drawable.Callback { |
| 28 |
| 29 private static final Property<Drawable, Integer> DRAWABLE_ALPHA_PROPERTY = |
| 30 new Property<Drawable, Integer>(Integer.class, "alpha") { |
| 31 @Override |
| 32 public Integer get(Drawable d) { |
| 33 // getAlpha() is only exposed on drawable in API 19+, so we rely on
animations |
| 34 // always setting the starting and ending values instead of relying
on this |
| 35 // property. |
| 36 return 0; |
| 37 } |
| 38 |
| 39 @Override |
| 40 public void set(Drawable d, Integer alpha) { |
| 41 d.setAlpha(alpha); |
| 42 } |
| 43 }; |
| 44 |
| 45 private final Drawable mNormalDrawable; |
| 46 private final Drawable mIncognitoDrawable; |
| 47 private boolean mIsIncognito; |
| 48 private AnimatorSet mTransitionAnimation; |
| 49 |
| 50 /** |
| 51 * Constructor for inflating from XML. |
| 52 */ |
| 53 public NewTabButton(Context context, AttributeSet attrs) { |
| 54 super(context, attrs); |
| 55 mNormalDrawable = ApiCompatibilityUtils.getDrawable( |
| 56 getResources(), R.drawable.btn_new_tab_white); |
| 57 mNormalDrawable.setBounds( |
| 58 0, 0, mNormalDrawable.getIntrinsicWidth(), mNormalDrawable.getIn
trinsicHeight()); |
| 59 mNormalDrawable.setCallback(this); |
| 60 mIncognitoDrawable = ApiCompatibilityUtils.getDrawable( |
| 61 getResources(), R.drawable.btn_new_tab_incognito); |
| 62 mIncognitoDrawable.setBounds( |
| 63 0, 0, |
| 64 mIncognitoDrawable.getIntrinsicWidth(), mIncognitoDrawable.getIn
trinsicHeight()); |
| 65 mIncognitoDrawable.setCallback(this); |
| 66 mIsIncognito = false; |
| 67 } |
| 68 |
| 69 @Override |
| 70 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| 71 int desiredWidth = Math.max( |
| 72 mIncognitoDrawable.getIntrinsicWidth(), mNormalDrawable.getIntri
nsicWidth()); |
| 73 desiredWidth += getPaddingLeft() + getPaddingRight(); |
| 74 widthMeasureSpec = MeasureSpec.makeMeasureSpec(desiredWidth, MeasureSpec
.EXACTLY); |
| 75 super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| 76 } |
| 77 |
| 78 @Override |
| 79 protected void onDraw(Canvas canvas) { |
| 80 super.onDraw(canvas); |
| 81 |
| 82 boolean isRtl = ApiCompatibilityUtils.isLayoutRtl(this); |
| 83 int paddingStart = ApiCompatibilityUtils.getPaddingStart(this); |
| 84 int widthWithoutPadding = getWidth() - paddingStart; |
| 85 |
| 86 canvas.save(); |
| 87 if (!isRtl) canvas.translate(paddingStart, 0); |
| 88 |
| 89 canvas.save(); |
| 90 canvas.translate(0, (getHeight() - mNormalDrawable.getIntrinsicHeight())
/ 2.f); |
| 91 if (isRtl) { |
| 92 canvas.translate(widthWithoutPadding - mNormalDrawable.getIntrinsicW
idth(), 0); |
| 93 } |
| 94 mNormalDrawable.draw(canvas); |
| 95 canvas.restore(); |
| 96 |
| 97 if (mIsIncognito || (mTransitionAnimation != null && mTransitionAnimatio
n.isRunning())) { |
| 98 canvas.save(); |
| 99 canvas.translate(0, (getHeight() - mIncognitoDrawable.getIntrinsicHe
ight()) / 2.f); |
| 100 if (isRtl) { |
| 101 canvas.translate(widthWithoutPadding - mIncognitoDrawable.getInt
rinsicWidth(), 0); |
| 102 } |
| 103 mIncognitoDrawable.draw(canvas); |
| 104 canvas.restore(); |
| 105 } |
| 106 |
| 107 canvas.restore(); |
| 108 } |
| 109 |
| 110 @Override |
| 111 public void invalidateDrawable(Drawable dr) { |
| 112 if (dr == mIncognitoDrawable || dr == mNormalDrawable) { |
| 113 invalidate(); |
| 114 } else { |
| 115 super.invalidateDrawable(dr); |
| 116 } |
| 117 } |
| 118 |
| 119 /** |
| 120 * Updates the visual state based on whether incognito or normal tabs are be
ing created. |
| 121 * @param incognito Whether the button is now used for creating incognito ta
bs. |
| 122 */ |
| 123 public void setIsIncognito(boolean incognito) { |
| 124 if (mIsIncognito == incognito) return; |
| 125 mIsIncognito = incognito; |
| 126 |
| 127 if (mTransitionAnimation != null) { |
| 128 mTransitionAnimation.cancel(); |
| 129 mTransitionAnimation = null; |
| 130 } |
| 131 |
| 132 Drawable fadeOutDrawable = incognito ? mNormalDrawable : mIncognitoDrawa
ble; |
| 133 Drawable fadeInDrawable = incognito ? mIncognitoDrawable : mNormalDrawab
le; |
| 134 |
| 135 if (getVisibility() != VISIBLE) { |
| 136 fadeOutDrawable.setAlpha(0); |
| 137 fadeInDrawable.setAlpha(255); |
| 138 return; |
| 139 } |
| 140 |
| 141 List<Animator> animations = new ArrayList<Animator>(); |
| 142 Animator animation = ObjectAnimator.ofInt( |
| 143 fadeOutDrawable, DRAWABLE_ALPHA_PROPERTY, 255, 0); |
| 144 animation.setDuration(100); |
| 145 animations.add(animation); |
| 146 |
| 147 animation = ObjectAnimator.ofInt( |
| 148 fadeInDrawable, DRAWABLE_ALPHA_PROPERTY, 0, 255); |
| 149 animation.setStartDelay(150); |
| 150 animation.setDuration(100); |
| 151 animations.add(animation); |
| 152 |
| 153 mTransitionAnimation = new AnimatorSet(); |
| 154 mTransitionAnimation.playTogether(animations); |
| 155 mTransitionAnimation.start(); |
| 156 } |
| 157 |
| 158 @Override |
| 159 protected void drawableStateChanged() { |
| 160 super.drawableStateChanged(); |
| 161 |
| 162 mNormalDrawable.setState(getDrawableState()); |
| 163 mIncognitoDrawable.setState(getDrawableState()); |
| 164 } |
| 165 } |
OLD | NEW |