1 /*
2  * Copyright (C) 2020 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.controls.ui
18 
19 import android.graphics.BlendMode
20 import android.graphics.BlendModeColorFilter
21 import android.graphics.drawable.ClipDrawable
22 import android.graphics.drawable.LayerDrawable
23 import android.view.View
24 import android.service.controls.Control
25 import android.service.controls.templates.ThumbnailTemplate
26 import android.util.TypedValue
27 
28 import com.android.systemui.R
29 import com.android.systemui.controls.ui.ControlViewHolder.Companion.MAX_LEVEL
30 import com.android.systemui.controls.ui.ControlViewHolder.Companion.MIN_LEVEL
31 
32 /**
33  * Supports display of static images on the background of the tile. When marked active, the title
34  * and subtitle will not be visible. To be used with {@link Thumbnailtemplate} only.
35  */
36 class ThumbnailBehavior(currentUserId: Int) : Behavior {
37     lateinit var template: ThumbnailTemplate
38     lateinit var control: Control
39     lateinit var cvh: ControlViewHolder
40     private var shadowOffsetX: Float = 0f
41     private var shadowOffsetY: Float = 0f
42     private var shadowRadius: Float = 0f
43     private var shadowColor: Int = 0
44 
45     private val canUseIconPredicate = CanUseIconPredicate(currentUserId)
46     private val enabled: Boolean
47         get() = template.isActive()
48 
49     override fun initialize(cvh: ControlViewHolder) {
50         this.cvh = cvh
51 
52         val outValue = TypedValue()
53         cvh.context.resources.getValue(R.dimen.controls_thumbnail_shadow_x, outValue, true)
54         shadowOffsetX = outValue.getFloat()
55 
56         cvh.context.resources.getValue(R.dimen.controls_thumbnail_shadow_y, outValue, true)
57         shadowOffsetY = outValue.getFloat()
58 
59         cvh.context.resources.getValue(R.dimen.controls_thumbnail_shadow_radius, outValue, true)
60         shadowRadius = outValue.getFloat()
61 
62         shadowColor = cvh.context.resources.getColor(R.color.control_thumbnail_shadow_color)
63         cvh.layout.setOnClickListener(View.OnClickListener() {
64             cvh.controlActionCoordinator.touch(cvh, template.getTemplateId(), control)
65         })
66     }
67 
68     override fun bind(cws: ControlWithState, colorOffset: Int) {
69         this.control = cws.control!!
70         cvh.setStatusText(control.getStatusText())
71         template = control.getControlTemplate() as ThumbnailTemplate
72 
73         val ld = cvh.layout.getBackground() as LayerDrawable
74         val clipLayer = ld.findDrawableByLayerId(R.id.clip_layer) as ClipDrawable
75 
76         clipLayer.setLevel(if (enabled) MAX_LEVEL else MIN_LEVEL)
77 
78         if (template.isActive()) {
79             cvh.title.visibility = View.INVISIBLE
80             cvh.subtitle.visibility = View.INVISIBLE
81             cvh.status.setShadowLayer(shadowOffsetX, shadowOffsetY, shadowRadius, shadowColor)
82 
83             cvh.bgExecutor.execute {
84                 val drawable = template.thumbnail
85                         ?.takeIf(canUseIconPredicate)
86                         ?.loadDrawable(cvh.context)
87                 cvh.uiExecutor.execute {
88                     val radius = cvh.context.getResources()
89                         .getDimensionPixelSize(R.dimen.control_corner_radius).toFloat()
90                     // TODO(b/290037843): Add a placeholder
91                     drawable?.let {
92                         clipLayer.drawable = CornerDrawable(it, radius)
93                     }
94                     clipLayer.setColorFilter(BlendModeColorFilter(cvh.context.resources
95                         .getColor(R.color.control_thumbnail_tint), BlendMode.LUMINOSITY))
96                     cvh.applyRenderInfo(enabled, colorOffset)
97                 }
98             }
99         } else {
100             cvh.title.visibility = View.VISIBLE
101             cvh.subtitle.visibility = View.VISIBLE
102             cvh.status.setShadowLayer(0f, 0f, 0f, shadowColor)
103         }
104 
105         cvh.applyRenderInfo(enabled, colorOffset)
106     }
107 }
108