Add the attribution text glow effect

Author: afarber

gradle/libs.versions.toml

@@ -7,30 +7,30 @@ dokka = "2.1.0"
 nmcp = "1.2.0"
 
 # AndroidX Core
-androidx-core = "1.15.0"
-androidx-lifecycle = "2.8.7"
-androidx-activity = "1.9.3"
-androidx-test-core = "1.6.1"
-androidx-test-runner = "1.6.2"
-androidx-test-rules = "1.6.1"
-androidx-test-junit = "1.2.1"
+androidx-core = "1.17.0"
+androidx-lifecycle = "2.9.4"
+androidx-activity = "1.11.0"
+androidx-test-core = "1.7.0"
+androidx-test-runner = "1.7.0"
+androidx-test-rules = "1.7.0"
+androidx-test-junit = "1.3.0"
 
 # Compose
-compose-ui = "1.7.5"
-compose-ui-graphics = "1.7.6"
-compose-material3 = "1.3.1"
+compose-ui = "1.9.4"
+compose-ui-graphics = "1.9.4"
+compose-material3 = "1.4.0"
 
 # Networking
-ktor = "2.3.7"
+ktor = "3.3.2"
 
 # Utilities
 disklrucache = "2.0.2"
 
 # Testing
 junit = "4.13.2"
-mockk = "1.13.8"
-robolectric = "4.14"
-kotlinx-coroutines = "1.9.0"
+mockk = "1.14.6"
+robolectric = "4.16"
+kotlinx-coroutines = "1.10.2"
 
 # Code Quality
 ktlint = "1.3.1"

openmapview/src/main/kotlin/de/afarber/openmapview/AttributionOverlay.kt

@@ -8,6 +8,7 @@
 package de.afarber.openmapview
 
 import android.content.Context
+import android.graphics.BlurMaskFilter
 import android.graphics.Canvas
 import android.graphics.Color
 import android.graphics.Paint
@@ -26,21 +27,33 @@ class AttributionOverlay(
     private var attributionText = "© OpenStreetMap contributors"
     private var attributionUrl = "https://www.openstreetmap.org/copyright"
 
+    private val density = context.resources.displayMetrics.density
+
     private val textPaint =
         TextPaint().apply {
             color = Color.BLACK
-            textSize = 12f * context.resources.displayMetrics.density
+            textSize = 12f * density
             isAntiAlias = true
         }
 
+    private val glowPaint =
+        TextPaint().apply {
+            color = Color.WHITE
+            textSize = 12f * density
+            isAntiAlias = true
+            maskFilter = BlurMaskFilter(5f * density, BlurMaskFilter.Blur.NORMAL)
+        }
+
     private val backgroundPaint =
         Paint().apply {
             color = Color.argb(180, 255, 255, 255)
             style = Paint.Style.FILL
         }
 
     private var textBounds = Rect()
-    private val padding = (4 * context.resources.displayMetrics.density).toInt()
+    private val padding = (4 * density).toInt()
+
+    var isGlowEnabled: Boolean = true
 
     var onAttributionClickListener: (() -> Unit)? = null
 
@@ -96,6 +109,9 @@ class AttributionOverlay(
         val textX = viewWidth - textWidth - padding
         val textY = viewHeight - padding
 
+        if (isGlowEnabled) {
+            canvas.drawText(attributionText, textX.toFloat(), textY.toFloat(), glowPaint)
+        }
         canvas.drawText(attributionText, textX.toFloat(), textY.toFloat(), textPaint)
     }
 

openmapview/src/main/kotlin/de/afarber/openmapview/OpenMapView.kt

@@ -105,6 +105,7 @@ class OpenMapView
             controller.setOnTileLoadedCallback {
                 invalidate()
             }
+            attributionOverlay.isGlowEnabled = uiSettings.isAttributionGlowEnabled
         }
 
         override fun dispatchDraw(canvas: Canvas) {
@@ -113,6 +114,7 @@ class OpenMapView
             if (uiSettings.isZoomControlsEnabled) {
                 zoomControlsOverlay.draw(canvas, width, height)
             }
+            attributionOverlay.isGlowEnabled = uiSettings.isAttributionGlowEnabled
             attributionOverlay.draw(canvas, width, height)
         }
 

openmapview/src/main/kotlin/de/afarber/openmapview/UiSettings.kt

@@ -38,6 +38,13 @@ class UiSettings {
      */
     var isScrollGesturesEnabledDuringRotateOrZoom: Boolean = true
 
+    /**
+     * Whether the attribution text glow effect is enabled.
+     * When true, attribution text is rendered with a white glow/halo effect.
+     * Default is true.
+     */
+    var isAttributionGlowEnabled: Boolean = true
+
     /**
      * Whether rotate gestures are enabled.
      * Currently not implemented, always returns false.