Enable automatic UI adjustment

+ Now the colors are chosen automatically from the background image 
selected
+ This is just amazing and I am very excited (I will tell 2000 ppl about 
it, spread the word please ^^)

app/build.gradle

@@ -37,4 +37,5 @@ dependencies {
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
     implementation 'com.google.android.material:material:1.1.0'
     implementation 'androidx.gridlayout:gridlayout:1.0.0'
+    implementation 'androidx.palette:palette:1.0.0'
 }

app/src/main/java/com/finnmglas/launcher/ChooseActivity.kt

@@ -33,6 +33,12 @@ class ChooseActivity : AppCompatActivity() {
         )
         setContentView(R.layout.activity_choose)
 
+        if (getSavedTheme(this) == "custom") {
+            activity_choose_container.setBackgroundColor(dominantColor)
+            activity_choose_app_bar.setBackgroundColor(dominantColor)
+            activity_choose_close.setTextColor(vibrantColor)
+        }
+
         // As older APIs somehow do not recognize the xml defined onClick
         activity_choose_close.setOnClickListener() { finish() }
 

app/src/main/java/com/finnmglas/launcher/FirstStartupActivity.kt

@@ -6,9 +6,7 @@ import android.os.Bundle
 import android.util.TypedValue
 import android.view.*
 import androidx.appcompat.app.AppCompatActivity
-import com.finnmglas.launcher.extern.blink
-import com.finnmglas.launcher.extern.getSavedTheme
-import com.finnmglas.launcher.extern.resetSettings
+import com.finnmglas.launcher.extern.*
 import kotlinx.android.synthetic.main.activity_firststartup.*
 
 
@@ -41,6 +39,12 @@ class FirstStartupActivity : AppCompatActivity(){
         )
         setContentView(R.layout.activity_firststartup)
 
+        if (getSavedTheme(this) == "custom") {
+            activity_firststartup_app_bar.setBackgroundColor(dominantColor)
+            activity_firststartup_container.setBackgroundColor(dominantColor)
+            activity_firststartup_close.setTextColor(vibrantColor)
+        }
+
         activity_firststartup_hint_text.blink() // animate
         loadMenu(this)
 

app/src/main/java/com/finnmglas/launcher/MainActivity.kt

@@ -93,6 +93,10 @@ class MainActivity : AppCompatActivity(),
 
         loadSettings(sharedPref)
 
+        if (currentTheme == "custom") {
+            activity_main_settings_icon.setTextColor(vibrantColor)
+        }
+
         mDetector = GestureDetectorCompat(this, this)
         mDetector.setOnDoubleTapListener(this)
 

app/src/main/java/com/finnmglas/launcher/SettingsActivity.kt

@@ -56,6 +56,19 @@ class SettingsActivity : AppCompatActivity() {
         }
     }
 
+    override fun onStart() {
+        super.onStart()
+
+        if (getSavedTheme(this) == "custom") {
+            activity_settings_container.setBackgroundColor(dominantColor)
+            activity_settings_app_bar.setBackgroundColor(dominantColor)
+
+            activity_settings_device_settings.setTextColor(vibrantColor)
+            activity_settings_close.setTextColor(vibrantColor)
+            activity_settings_tabs.setSelectedTabIndicatorColor(vibrantColor)
+        }
+    }
+
     fun backHome(view: View) { finish() }
 
     /** Theme - related */

app/src/main/java/com/finnmglas/launcher/extern/Functions.kt

@@ -37,6 +37,9 @@ var appsList : MutableList<ResolveInfo> = mutableListOf()
 
 var background : Bitmap? = null
 
+var dominantColor = 0
+var vibrantColor = 0
+
 /** REQUEST CODES */
 
 val REQUEST_PICK_IMAGE = 1
@@ -218,6 +221,9 @@ fun loadSettings(sharedPref : SharedPreferences){
 
     calendarApp = sharedPref.getString("action_calendarApp", "").toString()
     clockApp = sharedPref.getString("action_clockApp", "").toString()
+
+    dominantColor = sharedPref.getInt("custom_dominant", 0)
+    vibrantColor = sharedPref.getInt("custom_vibrant", 0)
 }
 
 fun resetSettings(sharedPref : SharedPreferences, context: Context) : MutableList<String>{
@@ -318,7 +324,7 @@ fun getDominantColor(bitmap: Bitmap?): Int {
 
 fun setButtonColor(btn: Button, color: Int) {
     if (Build.VERSION.SDK_INT >= 29)
-        btn.background.colorFilter = BlendModeColorFilter(color, BlendMode.DST_OVER)
+        btn.background.colorFilter = BlendModeColorFilter(color, BlendMode.MULTIPLY)
     else
         btn.background.setColorFilter(color, PorterDuff.Mode.MULTIPLY)
 }

app/src/main/java/com/finnmglas/launcher/settings/SettingsFragmentApps.kt

@@ -13,8 +13,7 @@ import android.view.ViewGroup
 import android.widget.Toast
 import com.finnmglas.launcher.ChooseActivity
 import com.finnmglas.launcher.R
-import com.finnmglas.launcher.extern.REQUEST_CHOOSE_APP
-import com.finnmglas.launcher.extern.loadSettings
+import com.finnmglas.launcher.extern.*
 import kotlinx.android.synthetic.main.fragment_settings_apps.*
 
 /** The 'Apps' Tab associated Fragment in Settings */
@@ -32,6 +31,22 @@ class SettingsFragmentApps : Fragment() {
     }
 
     override fun onStart() {
+
+        if (getSavedTheme(context!!) == "custom") {
+            fragment_settings_apps_container.setBackgroundColor(dominantColor)
+
+            setButtonColor(fragment_settings_apps_choose_up_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_choose_down_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_choose_left_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_choose_right_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_choose_vol_up_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_choose_vol_down_btn, vibrantColor)
+
+            setButtonColor(fragment_settings_apps_launch_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_install_btn, vibrantColor)
+            setButtonColor(fragment_settings_apps_remove_btn, vibrantColor)
+        }
+
         // Action - selecting buttons
         fragment_settings_apps_choose_up_btn.setOnClickListener{ chooseApp("upApp") }
         fragment_settings_apps_choose_down_btn.setOnClickListener{ chooseApp("downApp") }

app/src/main/java/com/finnmglas/launcher/settings/SettingsFragmentMeta.kt

@@ -15,9 +15,7 @@ import android.view.View
 import android.view.ViewGroup
 import com.finnmglas.launcher.FirstStartupActivity
 import com.finnmglas.launcher.R
-import com.finnmglas.launcher.extern.openAppSettings
-import com.finnmglas.launcher.extern.openNewTabWindow
-import com.finnmglas.launcher.extern.resetSettings
+import com.finnmglas.launcher.extern.*
 import kotlinx.android.synthetic.main.fragment_settings_meta.*
 
 /** The 'Meta' Tab associated Fragment in Settings */
@@ -34,6 +32,19 @@ class SettingsFragmentMeta : Fragment() {
     }
 
     override fun onStart() {
+
+        if (getSavedTheme(context!!) == "custom") {
+            fragment_settings_meta_container.setBackgroundColor(dominantColor)
+
+            setButtonColor(fragment_settings_meta_select_launcher_btn, vibrantColor)
+            setButtonColor(fragment_settings_meta_view_tutorial_btn, vibrantColor)
+            setButtonColor(fragment_settings_meta_reset_settings_btn, vibrantColor)
+
+            fragment_settings_meta_footer_play_icon.setTextColor(vibrantColor)
+            fragment_settings_meta_footer_github_icon.setTextColor(vibrantColor)
+            fragment_settings_meta_footer_globe_icon.setTextColor(vibrantColor)
+        }
+
         // Button onClicks
 
         fragment_settings_meta_select_launcher_btn.setOnClickListener {

app/src/main/java/com/finnmglas/launcher/settings/SettingsFragmentTheme.kt

@@ -14,6 +14,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
+import androidx.palette.graphics.Palette
 import com.finnmglas.launcher.R
 import com.finnmglas.launcher.extern.*
 import kotlinx.android.synthetic.main.fragment_settings_theme.*
@@ -33,28 +34,32 @@ class SettingsFragmentTheme : Fragment() {
 
     override fun onStart(){
         // Hide 'select' button for the selected theme or allow customisation
-        when (getSavedTheme(this.context!!)) {
+        when (getSavedTheme(context!!)) {
             "dark" -> fragment_settings_theme_select_dark_btn.visibility = View.INVISIBLE
             "finn" -> fragment_settings_theme_select_finn_btn.visibility = View.INVISIBLE
             "custom" -> {
                 fragment_settings_theme_select_custom_btn.text = getString(R.string.settings_select_image)
+                fragment_settings_theme_container.setBackgroundColor(dominantColor)
+                setButtonColor(fragment_settings_theme_select_finn_btn, vibrantColor)
+                setButtonColor(fragment_settings_theme_select_dark_btn, vibrantColor)
+                setButtonColor(fragment_settings_theme_select_custom_btn, vibrantColor)
             }
         }
 
         // Theme changing buttons
         fragment_settings_theme_select_dark_btn.setOnClickListener {
-            saveTheme(this.context!!, "dark")
+            saveTheme(context!!, "dark")
             activity!!.recreate()
         }
         fragment_settings_theme_select_finn_btn.setOnClickListener {
-            saveTheme(this.context!!, "finn")
+            saveTheme(context!!, "finn")
             activity!!.recreate()
         }
         fragment_settings_theme_select_custom_btn.setOnClickListener {
             // Request permission (on newer APIs)
             if (Build.VERSION.SDK_INT >= 23) {
                 when {
-                    ContextCompat.checkSelfPermission(this.context!!,
+                    ContextCompat.checkSelfPermission(context!!,
                         Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED
                     -> letUserPickImage()
                     shouldShowRequestPermissionRationale(Manifest.permission.WRITE_EXTERNAL_STORAGE)
@@ -94,17 +99,25 @@ class SettingsFragmentTheme : Fragment() {
             if (data == null) return
 
             val imageUri = data.data
+            background = MediaStore.Images.Media.getBitmap(context!!.contentResolver, imageUri)
 
-            /* Save image Uri as string */
-            val editor: SharedPreferences.Editor = context!!.getSharedPreferences(
-                context!!.getString(R.string.preference_file_key), Context.MODE_PRIVATE).edit()
-            editor.putString("background_uri", imageUri.toString())
-            editor.apply()
+            Palette.Builder(background!!).generate {
+                it?.let { palette ->
+                    dominantColor = palette.getDominantColor(ContextCompat.getColor(context!!, R.color.darkTheme_accent_color))
+                    vibrantColor = palette.getVibrantColor(ContextCompat.getColor(context!!, R.color.darkTheme_accent_color))
 
-            background = MediaStore.Images.Media.getBitmap(this.context!!.contentResolver, imageUri)
+                    /* Save image Uri as string */
+                    val editor: SharedPreferences.Editor = context!!.getSharedPreferences(
+                        context!!.getString(R.string.preference_file_key), Context.MODE_PRIVATE).edit()
+                    editor.putString("background_uri", imageUri.toString())
+                    editor.putInt("custom_dominant", dominantColor)
+                    editor.putInt("custom_vibrant", vibrantColor)
+                    editor.apply()
 
-            saveTheme(this.context!!, "custom")
-            activity!!.recreate()
+                    saveTheme(context!!, "custom")
+                    activity!!.recreate()
+                }
+            }
         }
     }
 }