FloatingActionButtonLollipop.java revision 7e82b99953680915596eaf0eb35927388e574ca8 
1/*
2 * Copyright (C) 2015 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
17package android.support.design.widget;
18
19import android.animation.Animator;
20import android.animation.ObjectAnimator;
21import android.animation.StateListAnimator;
22import android.annotation.TargetApi;
23import android.content.res.ColorStateList;
24import android.graphics.PorterDuff;
25import android.graphics.drawable.Drawable;
26import android.graphics.drawable.RippleDrawable;
27import android.os.Build;
28import android.support.v4.graphics.drawable.DrawableCompat;
29import android.support.v4.view.ViewCompat;
30import android.view.View;
31import android.view.animation.AnimationUtils;
32import android.view.animation.Interpolator;
33
34@TargetApi(Build.VERSION_CODES.LOLLIPOP)
35class FloatingActionButtonLollipop extends FloatingActionButtonImpl {
36
37    private Drawable mShapeDrawable;
38    private RippleDrawable mRippleDrawable;
39
40    private final Interpolator mInterpolator;
41
42    FloatingActionButtonLollipop(View view, ShadowViewDelegate shadowViewDelegate) {
43        super(view, shadowViewDelegate);
44
45        mInterpolator = AnimationUtils.loadInterpolator(
46                mView.getContext(), android.R.interpolator.fast_out_slow_in);
47    }
48
49    @Override
50    void setBackgroundDrawable(Drawable originalBackground, ColorStateList backgroundTint,
51            PorterDuff.Mode backgroundTintMode, int rippleColor) {
52        mShapeDrawable = DrawableCompat.wrap(originalBackground);
53
54        DrawableCompat.setTintList(mShapeDrawable, backgroundTint);
55        if (backgroundTintMode != null) {
56            DrawableCompat.setTintMode(mShapeDrawable, backgroundTintMode);
57        }
58
59        mRippleDrawable = new RippleDrawable(ColorStateList.valueOf(rippleColor),
60                mShapeDrawable, null);
61
62        mShadowViewDelegate.setBackgroundDrawable(mRippleDrawable);
63        mShadowViewDelegate.setShadowPadding(0, 0, 0, 0);
64    }
65
66    @Override
67    void setBackgroundTintList(ColorStateList tint) {
68        DrawableCompat.setTintList(mShapeDrawable, tint);
69    }
70
71    @Override
72    void setBackgroundTintMode(PorterDuff.Mode tintMode) {
73        DrawableCompat.setTintMode(mShapeDrawable, tintMode);
74    }
75
76    @Override
77    void setRippleColor(int rippleColor) {
78        DrawableCompat.setTint(mRippleDrawable, rippleColor);
79    }
80
81    @Override
82    public void setElevation(float elevation) {
83        ViewCompat.setElevation(mView, elevation);
84    }
85
86    @Override
87    void setPressedTranslationZ(float translationZ) {
88        StateListAnimator stateListAnimator = new StateListAnimator();
89
90        // Animate translationZ to our value when pressed or focused
91        stateListAnimator.addState(PRESSED_ENABLED_STATE_SET,
92                setupAnimator(ObjectAnimator.ofFloat(mView, "translationZ", translationZ)));
93        stateListAnimator.addState(FOCUSED_ENABLED_STATE_SET,
94                setupAnimator(ObjectAnimator.ofFloat(mView, "translationZ", translationZ)));
95        // Animate translationZ to 0 otherwise
96        stateListAnimator.addState(EMPTY_STATE_SET,
97                setupAnimator(ObjectAnimator.ofFloat(mView, "translationZ", 0f)));
98
99        mView.setStateListAnimator(stateListAnimator);
100    }
101
102    @Override
103    void onDrawableStateChanged(int[] state) {
104        // no-op
105    }
106
107    @Override
108    void jumpDrawableToCurrentState() {
109        // no-op
110    }
111
112    private Animator setupAnimator(Animator animator) {
113        animator.setInterpolator(mInterpolator);
114        return animator;
115    }
116}