53 lines
1.7 KiB
Kotlin
53 lines
1.7 KiB
Kotlin
package org.thoughtcrime.securesms.conversation.v2.utilities
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import android.content.Context
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import android.graphics.Canvas
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import android.graphics.Paint
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import android.graphics.Rect
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import android.os.SystemClock
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import android.util.AttributeSet
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import android.view.View
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import org.thoughtcrime.securesms.util.getAccentColor
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import kotlin.math.sin
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class ThumbnailProgressBar: View {
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constructor(context: Context) : super(context)
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constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
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constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
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private val firstX: Double
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get() = sin(SystemClock.elapsedRealtime() / 300.0) * 1.5
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private val secondX: Double
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get() = sin(SystemClock.elapsedRealtime() / 300.0 + (Math.PI/4)) * 1.5
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private val paint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
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style = Paint.Style.FILL
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color = context.getAccentColor()
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}
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private val objectRect = Rect()
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private val drawingRect = Rect()
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override fun dispatchDraw(canvas: Canvas) {
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getDrawingRect(objectRect)
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drawingRect.set(objectRect)
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val coercedFX = firstX
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val coercedSX = secondX
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val firstMeasuredX = objectRect.left + (objectRect.width() * coercedFX)
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val secondMeasuredX = objectRect.left + (objectRect.width() * coercedSX)
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drawingRect.set(
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(if (firstMeasuredX < secondMeasuredX) firstMeasuredX else secondMeasuredX).toInt(),
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objectRect.top,
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(if (firstMeasuredX < secondMeasuredX) secondMeasuredX else firstMeasuredX).toInt(),
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objectRect.bottom
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)
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canvas.drawRect(drawingRect, paint)
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invalidate()
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}
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} |