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thetwom committed Jun 30, 2021
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15 changes: 15 additions & 0 deletions .gitignore
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*.iml
.gradle
/local.properties
/.idea/caches
/.idea/libraries
/.idea/modules.xml
/.idea/workspace.xml
/.idea/navEditor.xml
/.idea/assetWizardSettings.xml
.DS_Store
/build
/captures
.externalNativeBuild
.cxx
local.properties
3 changes: 3 additions & 0 deletions .idea/.gitignore

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1 change: 1 addition & 0 deletions app/.gitignore
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/build
44 changes: 44 additions & 0 deletions app/build.gradle
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plugins {
id 'com.android.application'
id 'kotlin-android'
}

android {
compileSdkVersion 30

defaultConfig {
applicationId "de.moekadu.tickvis"
minSdkVersion 23
targetSdkVersion 30
versionCode 1
versionName "1.0"

testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}

buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
}

dependencies {

implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'androidx.core:core-ktx:1.5.0'
implementation 'androidx.appcompat:appcompat:1.3.0'
implementation 'com.google.android.material:material:1.3.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
testImplementation 'junit:junit:4.+'
androidTestImplementation 'androidx.test.ext:junit:1.1.2'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
}
21 changes: 21 additions & 0 deletions app/proguard-rules.pro
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# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html

# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}

# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable

# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile
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package de.moekadu.tickvis

import androidx.test.platform.app.InstrumentationRegistry
import androidx.test.ext.junit.runners.AndroidJUnit4

import org.junit.Test
import org.junit.runner.RunWith

import org.junit.Assert.*

/**
* Instrumented test, which will execute on an Android device.
*
* See [testing documentation](http://d.android.com/tools/testing).
*/
@RunWith(AndroidJUnit4::class)
class ExampleInstrumentedTest {
@Test
fun useAppContext() {
// Context of the app under test.
val appContext = InstrumentationRegistry.getInstrumentation().targetContext
assertEquals("de.moekadu.tickvis", appContext.packageName)
}
}
21 changes: 21 additions & 0 deletions app/src/main/AndroidManifest.xml
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="de.moekadu.tickvis">

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.TickVis">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>
61 changes: 61 additions & 0 deletions app/src/main/java/de/moekadu/tickvis/MainActivity.kt
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package de.moekadu.tickvis

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.text.InputType
import android.widget.Button
import android.widget.EditText
import android.widget.TextView
import android.widget.Toast
import androidx.appcompat.app.AlertDialog

class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)

val button = findViewById<Button>(R.id.button)
val vis = findViewById<TickVisualizer>(R.id.vis)
val text = findViewById<TextView>(R.id.bpm_text)

text.text = "${vis.bpm} bpm"

text.setOnClickListener {
val builder = AlertDialog.Builder(this).apply {
val editText = EditText(this@MainActivity)
editText.inputType = InputType.TYPE_CLASS_NUMBER or InputType.TYPE_NUMBER_FLAG_DECIMAL
val pad = 10
editText.setPadding(pad, pad, pad, pad)

setTitle("new speed in bpm")
setPositiveButton("done") { _, _ ->
val newBpmText = editText.text.toString()
val newBpm = newBpmText.toFloatOrNull()
if (newBpm == null) {
Toast.makeText(
this@MainActivity, "invalid input",
Toast.LENGTH_LONG
).show()
} else {
vis.bpm = newBpm
text.text = "${vis.bpm} bpm"
}

}
setNegativeButton("abort") { dialog, _ ->
dialog?.cancel()
}
setView(editText)
}
val dialog = builder.create()
dialog.show()
}

button.setOnClickListener {
if (vis.isRunning)
vis.stop()
else
vis.start()
}
}
}
62 changes: 62 additions & 0 deletions app/src/main/java/de/moekadu/tickvis/TickVisualizer.kt
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package de.moekadu.tickvis

import android.animation.TimeAnimator
import android.animation.ValueAnimator
import android.content.Context
import android.graphics.Canvas
import android.graphics.Color
import android.graphics.Paint
import android.util.AttributeSet
import android.util.Log
import android.view.View
import kotlin.math.roundToLong

class TickVisualizer(context : Context, attrs : AttributeSet?, defStyleAttr: Int)
: View(context, attrs, defStyleAttr) {

var bpm = 60f
val animator = TimeAnimator().apply {
setTimeListener { animation, totalTime, deltaTime ->
if (totalTime > next) {
current = next
next += (60f / bpm * 1000).roundToLong()
odd = !odd
}
//paint.alpha = 255 - (255 * (totalTime - current).toFloat() / (next - current).toFloat()).toInt()
Log.v("TickVis", "alpha = ${paint.alpha} tot=$totalTime, current=$current next=$next")
invalidate()
}
}

private val paint = Paint().apply {
color = Color.RED
}

var odd = false
var current = 0L
var next = 0L
var isRunning = false
private set

constructor(context: Context, attrs: AttributeSet? = null) : this(context, attrs, 0)

fun start() {
next = 0
animator.start()
isRunning = true
}

fun stop() {
animator.end()
isRunning = false
}

override fun onDraw(canvas: Canvas?) {
super.onDraw(canvas)

if (odd)
canvas?.drawRect(0f, 0f, 0.5f * width.toFloat(), height.toFloat(), paint)
else
canvas?.drawRect(0.5f*width.toFloat(), 0f, width.toFloat(), height.toFloat(), paint)
}
}
30 changes: 30 additions & 0 deletions app/src/main/res/drawable-v24/ic_launcher_foreground.xml
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<vector xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:aapt="http://schemas.android.com/aapt"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
<aapt:attr name="android:fillColor">
<gradient
android:endX="85.84757"
android:endY="92.4963"
android:startX="42.9492"
android:startY="49.59793"
android:type="linear">
<item
android:color="#44000000"
android:offset="0.0" />
<item
android:color="#00000000"
android:offset="1.0" />
</gradient>
</aapt:attr>
</path>
<path
android:fillColor="#FFFFFF"
android:fillType="nonZero"
android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
android:strokeWidth="1"
android:strokeColor="#00000000" />
</vector>
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