preference for clock color (cf. #12, #75)

app/src/main/java/de/jrpie/android/launcher/preferences/ColorPreference.kt

@@ -0,0 +1,165 @@
+package de.jrpie.android.launcher.preferences
+
+import android.content.Context
+import android.content.res.TypedArray
+import android.graphics.Color
+import android.text.Editable
+import android.text.TextWatcher
+import android.util.AttributeSet
+import android.widget.EditText
+import android.widget.SeekBar
+import android.widget.TextView
+import androidx.annotation.ColorInt
+import androidx.appcompat.app.AlertDialog
+import androidx.core.graphics.alpha
+import androidx.core.graphics.blue
+import androidx.core.graphics.green
+import androidx.core.graphics.red
+import androidx.preference.Preference
+import de.jrpie.android.launcher.R
+
+class ColorPreference(context: Context, attrs: AttributeSet?) :
+    Preference(context, attrs) {
+
+    @Suppress("unused")
+    constructor(context: Context) : this(context, null)
+
+    private var selectedColor = Color.WHITE
+
+    init {
+        isPersistent = true
+        selectedColor = getPersistedInt(selectedColor)
+        summary = selectedColor.getHex()
+    }
+
+    override fun onClick() {
+        showDialog()
+    }
+
+    @ColorInt
+    override fun onGetDefaultValue(a: TypedArray, index: Int): Int {
+        return a.getInt(index, selectedColor)
+    }
+
+    override fun onSetInitialValue(defaultValue: Any?) {
+        selectedColor = getPersistedInt(selectedColor)
+        summary = selectedColor.getHex()
+    }
+
+    private fun showDialog() {
+        var currentColor = getPersistedInt(selectedColor)
+
+        AlertDialog.Builder(context, R.style.AlertDialogCustom).apply {
+            setView(R.layout.dialog_choose_color)
+            setTitle(R.string.dialog_choose_color_title)
+            setPositiveButton(R.string.dialog_select_color_ok) { _, _ ->
+                persistInt(currentColor)
+                summary = currentColor.getHex()
+            }
+            setNegativeButton(R.string.dialog_select_color_cancel) { _, _ -> }
+        }.create().also { it.show() }.apply {
+            val preview = findViewById<EditText>(R.id.dialog_select_color_preview)
+
+            val red = findViewById<SeekBar>(R.id.dialog_select_color_seekbar_red)
+            val green = findViewById<SeekBar>(R.id.dialog_select_color_seekbar_green)
+            val blue = findViewById<SeekBar>(R.id.dialog_select_color_seekbar_blue)
+            val alpha = findViewById<SeekBar>(R.id.dialog_select_color_seekbar_alpha)
+
+            val updateColor = { updateText: Boolean ->
+                preview?.setTextColor(currentColor.foregroundTextColor())
+                preview?.setBackgroundColor(currentColor)
+                if (updateText) {
+                    preview?.setText(currentColor.getHex(), TextView.BufferType.EDITABLE)
+                }
+                red?.progress = currentColor.red
+                green?.progress = currentColor.green
+                blue?.progress = currentColor.blue
+                alpha?.progress = currentColor.alpha
+            }
+            updateColor(true)
+
+            preview?.addTextChangedListener(object : TextWatcher {
+                override fun beforeTextChanged(text: CharSequence?, p1: Int, p2: Int, p3: Int) {}
+                override fun onTextChanged(text: CharSequence?, p1: Int, p2: Int, p3: Int) {}
+                override fun afterTextChanged(editable: Editable?) {
+                    preview.hasFocus() || return
+                    val newText = editable?.toString()
+                    newText.isNullOrBlank() && return
+                    try {
+                        val newColor = Color.parseColor(newText.toString())
+                        currentColor = newColor
+                        updateColor(false)
+                    } catch (_: IllegalArgumentException) {
+                    }
+                }
+            })
+            red?.setOnSeekBarChangeListener(SeekBarChangeListener {
+                currentColor = currentColor.updateRed(it)
+                updateColor(true)
+            })
+            green?.setOnSeekBarChangeListener(SeekBarChangeListener {
+                currentColor = currentColor.updateGreen(it)
+                updateColor(true)
+            })
+            blue?.setOnSeekBarChangeListener(SeekBarChangeListener {
+                currentColor = currentColor.updateBlue(it)
+                updateColor(true)
+            })
+            alpha?.setOnSeekBarChangeListener(SeekBarChangeListener {
+                currentColor = currentColor.updateAlpha(it)
+                updateColor(true)
+            })
+        }
+    }
+
+
+    private class SeekBarChangeListener(val update: (Int) -> Unit) :
+        SeekBar.OnSeekBarChangeListener {
+        override fun onProgressChanged(seekBar: SeekBar?, v: Int, fromUser: Boolean) {
+            fromUser || return
+            update(v)
+        }
+
+        override fun onStartTrackingTouch(p0: SeekBar?) {}
+        override fun onStopTrackingTouch(p0: SeekBar?) {}
+    }
+
+    companion object {
+        fun @receiver:ColorInt Int.getHex(): String {
+            return "#%08X".format(this)
+        }
+
+        @ColorInt
+        fun @receiver:ColorInt Int.updateRed(red: Int): Int {
+            return Color.argb(this.alpha, red, this.green, this.blue)
+        }
+
+        @ColorInt
+        fun @receiver:ColorInt Int.updateGreen(green: Int): Int {
+            return Color.argb(this.alpha, this.red, green, this.blue)
+        }
+
+        @ColorInt
+        fun @receiver:ColorInt Int.updateBlue(blue: Int): Int {
+            return Color.argb(this.alpha, this.red, this.green, blue)
+        }
+
+        @ColorInt
+        fun @receiver:ColorInt Int.updateAlpha(alpha: Int): Int {
+            return Color.argb(alpha, this.red, this.green, this.blue)
+        }
+
+        @ColorInt
+        fun @receiver:ColorInt Int.foregroundTextColor(): Int {
+            // https://stackoverflow.com/a/3943023
+            return if (
+                this.red * 0.299 + this.green * 0.587 + this.blue * 0.114
+                > this.alpha / 256f * 150
+            ) {
+                Color.BLACK
+            } else {
+                Color.WHITE
+            }
+        }
+    }
+}

app/src/main/java/de/jrpie/android/launcher/preferences/LauncherPreferences$Config.java

@@ -53,6 +53,7 @@ import eu.jonahbauer.android.preference.annotations.serializer.PreferenceSeriali
                 }),
                 @PreferenceGroup(name = "clock", prefix = "settings_clock_", suffix = "_key", value = {
                         @Preference(name = "font", type = Font.class, defaultValue = "HACK"),
+                        @Preference(name = "color", type = int.class, defaultValue = "0xffffffff"),
                         @Preference(name = "date_visible", type = boolean.class, defaultValue = "true"),
                         @Preference(name = "time_visible", type = boolean.class, defaultValue = "true"),
                         @Preference(name = "flip_date_time", type = boolean.class, defaultValue = "false"),

app/src/main/java/de/jrpie/android/launcher/ui/HomeActivity.kt

@@ -142,6 +142,10 @@ class HomeActivity : UIObject, AppCompatActivity(),
         binding.homeUpperView.isVisible = upperVisible
         binding.homeLowerView.isVisible = lowerVisible
 
+        binding.homeUpperView.setTextColor(LauncherPreferences.clock().color())
+        binding.homeLowerView.setTextColor(LauncherPreferences.clock().color())
+
+
         clockTimer = fixedRateTimer("clockTimer", true, 0L, period) {
             this@HomeActivity.runOnUiThread {
                 if (lowerVisible) {
@@ -200,6 +204,7 @@ class HomeActivity : UIObject, AppCompatActivity(),
                 }
                 Gesture.VOLUME_UP(this)
             }
+
             KeyEvent.KEYCODE_VOLUME_DOWN -> {
                 if (Action.forGesture(Gesture.VOLUME_DOWN) == LauncherAction.VOLUME_DOWN) {
                     // see above
@@ -229,7 +234,6 @@ class HomeActivity : UIObject, AppCompatActivity(),
         val edgeActions = LauncherPreferences.enabled_gestures().edgeSwipe()
 
         val threshold = ViewConfiguration.get(this).scaledTouchSlop
-
         val angularThreshold = tan(Math.PI / 6)
 
         var gesture = if (angularThreshold * abs(diffX) > abs(diffY)) { // horizontal swipe

app/src/main/res/layout/dialog_choose_color.xml

@@ -0,0 +1,82 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    style="@style/AlertDialogCustom"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="20dp">
+
+    <EditText
+        android:inputType="textNoSuggestions"
+        android:singleLine="true"
+        android:hint="@string/dialog_select_color_color_hex"
+        android:autofillHints="color"
+        android:id="@+id/dialog_select_color_preview"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:gravity="center|center_horizontal"
+        android:padding="5dp"
+        android:textSize="20sp"
+        tools:text="#ffbb00" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="10dp" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_select_color_red" />
+
+    <SeekBar
+        android:id="@+id/dialog_select_color_seekbar_red"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="255" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="10dp" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_select_color_green" />
+
+    <SeekBar
+        android:id="@+id/dialog_select_color_seekbar_green"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="255" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="10dp" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_select_color_blue" />
+
+    <SeekBar
+        android:id="@+id/dialog_select_color_seekbar_blue"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="255" />
+
+    <Space
+        android:layout_width="match_parent"
+        android:layout_height="10dp" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_select_color_alpha" />
+
+    <SeekBar
+        android:id="@+id/dialog_select_color_seekbar_alpha"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:max="255" />
+</LinearLayout>

app/src/main/res/values-v29/styles.xml

@@ -7,4 +7,6 @@
         <item name="android:enforceNavigationBarContrast">false</item>
         <!--<item name="android:windowDrawsSystemBarBackgrounds">true</item>-->
     </style>
+
+
 </resources>

app/src/main/res/values/donottranslate.xml

@@ -119,6 +119,7 @@
           -
           -->
         <string name="settings_clock_font_key" translatable="false">clock.font</string>
+        <string name="settings_clock_color_key" translatable="false">clock.color</string>
         <string name="settings_clock_time_visible_key" translatable="false">clock.time_visible</string>
         <string name="settings_clock_show_seconds_key" translatable="false">clock.show_seconds</string>
         <string name="settings_clock_date_visible_key" translatable="false">clock.date_visible</string>

app/src/main/res/values/strings.xml

@@ -112,6 +112,7 @@
     <string name="settings_theme_monochrome_icons">Monochrome app icons</string>
 
     <string name="settings_launcher_section_date_time"><![CDATA[Date & time]]></string>
+    <string name="settings_clock_color">Color</string>
     <string name="settings_clock_time_visible">Show time</string>
     <string name="settings_clock_date_visible">Show date</string>
     <string name="settings_clock_localized">Use localized date format</string>
@@ -289,4 +290,12 @@
     <string name="dialog_rename_cancel">Cancel</string>
     <string name="dialog_rename_ok">Ok</string>
     <string name="dialog_rename_title">Rename %1$s</string>
+    <string name="dialog_select_color_red">Red</string>
+    <string name="dialog_select_color_alpha">Alpha</string>
+    <string name="dialog_select_color_blue">Blue</string>
+    <string name="dialog_select_color_green">Green</string>
+    <string name="dialog_select_color_ok">Ok</string>
+    <string name="dialog_select_color_cancel">Cancel</string>
+    <string name="dialog_select_color_color_hex">Color</string>
+    <string name="dialog_choose_color_title">Choose color</string>
 </resources>

app/src/main/res/xml/preferences.xml

@@ -59,6 +59,10 @@
             android:entries="@array/settings_theme_font_items"
             android:summary="%s"
             android:defaultValue="HACK"/>
+        <de.jrpie.android.launcher.preferences.ColorPreference
+            android:key="@string/settings_clock_color_key"
+            android:title="@string/settings_clock_color"
+            />
         <SwitchPreference
             android:key="@string/settings_clock_localized_key"
             android:defaultValue="false"