From fcb0f1fc49e2f82bee73a30dc141339ccd6adeca Mon Sep 17 00:00:00 2001
From: Taras <tarassmakula@gmail.com>
Date: Wed, 16 Feb 2022 10:45:47 +0200
Subject: [PATCH] Create circles logo view
---
.../futo/circles/extensions/ViewExtensions.kt | 11 ++
.../futo/circles/ui/view/CirclesLogoView.kt | 118 ++++++++++++++++++
2 files changed, 129 insertions(+)
create mode 100644 app/src/main/java/com/futo/circles/extensions/ViewExtensions.kt
create mode 100644 app/src/main/java/com/futo/circles/ui/view/CirclesLogoView.kt
diff --git a/app/src/main/java/com/futo/circles/extensions/ViewExtensions.kt b/app/src/main/java/com/futo/circles/extensions/ViewExtensions.kt
new file mode 100644
index 000000000..4b523b832
--- /dev/null
+++ b/app/src/main/java/com/futo/circles/extensions/ViewExtensions.kt
@@ -0,0 +1,11 @@
+package com.futo.circles.extensions
+
+import android.view.View
+
+fun View.visible() {
+ visibility = View.VISIBLE
+}
+
+fun View.gone() {
+ visibility = View.GONE
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/futo/circles/ui/view/CirclesLogoView.kt b/app/src/main/java/com/futo/circles/ui/view/CirclesLogoView.kt
new file mode 100644
index 000000000..03943b48d
--- /dev/null
+++ b/app/src/main/java/com/futo/circles/ui/view/CirclesLogoView.kt
@@ -0,0 +1,118 @@
+package com.futo.circles.ui.view
+
+import android.content.Context
+import android.graphics.*
+import android.util.AttributeSet
+import android.view.View
+import androidx.annotation.ColorRes
+import androidx.core.content.ContextCompat
+import androidx.core.graphics.ColorUtils
+import com.futo.circles.R
+import kotlin.math.cos
+import kotlin.math.min
+import kotlin.math.sin
+import kotlin.random.Random
+
+class CirclesLogoView(
+ context: Context,
+ attrs: AttributeSet? = null,
+) : View(context, attrs) {
+
+ private val sideCirclesCount = 9
+ private val defaultScale = 0.5f
+
+ private val colors = listOf(
+ R.color.green,
+ R.color.purple,
+ R.color.yellow,
+ R.color.orange,
+ R.color.red,
+ R.color.pink,
+ R.color.green,
+ R.color.orange
+ )
+
+ init {
+ setLayerType(LAYER_TYPE_SOFTWARE, null)
+ }
+
+ override fun onDraw(canvas: Canvas?) {
+ super.onDraw(canvas)
+ val list = createCirclesList()
+
+ list.forEach { canvas?.drawCircle(it.x, it.y, it.radius, it.fillPaint) }
+ list.forEach{canvas?.drawCircle(it.x, it.y, it.radius, it.borderPaint)}
+
+ }
+
+
+ private fun createCirclesList(): List<CircleViewData> {
+ val radius = min(measuredHeight, measuredWidth) * defaultScale * 0.5f
+ val center = PointF(0.5f * measuredWidth, 0.5f * measuredHeight)
+ val circlesList: MutableList<CircleViewData> = mutableListOf()
+
+ circlesList.add(
+ CircleViewData(
+ center.x,
+ center.y,
+ radius,
+ getFillPaint(R.color.blue, 0.95f),
+ getCircleStrokePaint(8f)
+ )
+ )
+
+ (1..sideCirclesCount).forEach { i ->
+ circlesList.add(createCircle(center, radius, i))
+ }
+ return circlesList
+ }
+
+
+ private fun createCircle(center: PointF, radius: Float, number: Int): CircleViewData {
+ val fraction = number.toDouble() / sideCirclesCount
+ val angle = Math.toRadians(360 * fraction + 27)
+ val rand = Random.nextDouble(0.5, 1.5).toFloat()
+ val offset = (1.0f + 0.25f * rand) * radius
+ val x = center.x + cos(angle).toFloat() * offset
+ val y = center.y + sin(angle).toFloat() * offset
+ val scale = 0.85f * rand * defaultScale
+ val newRadius = scale * radius
+
+ return CircleViewData(
+ x,
+ y,
+ newRadius,
+ getFillPaint(colors.random(), 0.55f),
+ getCircleStrokePaint(4f)
+ )
+ }
+
+ private fun getCircleStrokePaint(width: Float) = Paint().apply {
+ isAntiAlias = true
+ style = Paint.Style.STROKE
+ color = Color.BLACK
+ strokeWidth = width
+ }
+
+ private fun getFillPaint(@ColorRes fillColorId: Int, opacity: Float): Paint {
+ val colorWithAlpha = ColorUtils.setAlphaComponent(
+ ContextCompat.getColor(context, fillColorId),
+ (255 * opacity).toInt()
+ )
+
+ return Paint().apply {
+ isAntiAlias = true
+ style = Paint.Style.FILL
+ color = colorWithAlpha
+ }
+ }
+
+}
+
+data class CircleViewData(
+ val x: Float,
+ val y: Float,
+ val radius: Float,
+ val fillPaint: Paint,
+ val borderPaint: Paint
+)
\ No newline at end of file
--
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