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/*
* Copyright (C) 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.customization.picker.color.ui.view
import android.annotation.ColorInt
import android.content.Context
import android.graphics.Canvas
import android.graphics.Color
import android.graphics.Paint
import android.graphics.RectF
import android.util.AttributeSet
import android.view.View
/**
* Draw a color option icon, which is a quadrant circle that can show at most 4 different colors.
*/
class ColorOptionIconView(
context: Context,
attrs: AttributeSet,
) : View(context, attrs) {
private val paint = Paint().apply { style = Paint.Style.FILL }
private val oval = RectF()
private var color0 = DEFAULT_PLACEHOLDER_COLOR
private var color1 = DEFAULT_PLACEHOLDER_COLOR
private var color2 = DEFAULT_PLACEHOLDER_COLOR
private var color3 = DEFAULT_PLACEHOLDER_COLOR
private var w = 0
private var h = 0
/**
* @param color0 the color in the top left quadrant
* @param color1 the color in the top right quadrant
* @param color2 the color in the bottom left quadrant
* @param color3 the color in the bottom right quadrant
*/
fun bindColor(
@ColorInt color0: Int,
@ColorInt color1: Int,
@ColorInt color2: Int,
@ColorInt color3: Int,
) {
this.color0 = color0
this.color1 = color1
this.color2 = color2
this.color3 = color3
invalidate()
}
override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
this.w = w
this.h = h
super.onSizeChanged(w, h, oldw, oldh)
}
override fun onDraw(canvas: Canvas?) {
super.onDraw(canvas)
// The w and h need to be an even number to avoid tiny pixel-level gaps between the pies
w = w.roundDownToEven()
h = h.roundDownToEven()
val width = w.toFloat()
val height = h.toFloat()
oval.set(0f, 0f, width, height)
canvas?.apply {
paint.color = color3
drawArc(
oval,
0f,
90f,
true,
paint,
)
paint.color = color2
drawArc(
oval,
90f,
90f,
true,
paint,
)
paint.color = color0
drawArc(
oval,
180f,
90f,
true,
paint,
)
paint.color = color1
drawArc(
oval,
270f,
90f,
true,
paint,
)
}
}
companion object {
const val DEFAULT_PLACEHOLDER_COLOR = Color.BLACK
fun Int.roundDownToEven(): Int {
return if (this % 2 == 0) this else this - 1
}
}
}
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