Use EmojiTheming on internal ViewPager. (#793)

vanniktech · May 23, 2022 · 05487e3 · 05487e3
1 parent 644b508
commit 05487e3
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diff --git a/emoji/src/main/kotlin/com/vanniktech/emoji/EmojiView.kt b/emoji/src/main/kotlin/com/vanniktech/emoji/EmojiView.kt
@@ -41,6 +41,7 @@ import com.vanniktech.emoji.internal.dividerColor
 import com.vanniktech.emoji.internal.hideKeyboardAndFocus
 import com.vanniktech.emoji.internal.primaryColor
 import com.vanniktech.emoji.internal.secondaryColor
+import com.vanniktech.emoji.internal.setEdgeColor
 import com.vanniktech.emoji.internal.showKeyboardAndFocus
 import com.vanniktech.emoji.listeners.OnEmojiBackspaceClickListener
 import com.vanniktech.emoji.listeners.OnEmojiClickListener
@@ -105,6 +106,7 @@ class EmojiView @JvmOverloads constructor(
     }
     setBackgroundColor(theming.backgroundColor(context))
     val emojisPager: ViewPager = findViewById(R.id.emojiViewPager)
+    emojisPager.setEdgeColor(theming.secondaryColor(context))
     val emojiDivider = findViewById<View>(R.id.emojiViewDivider)
     emojiDivider.setBackgroundColor(theming.dividerColor(context))
     if (pageTransformer != null) {

diff --git a/emoji/src/main/kotlin/com/vanniktech/emoji/internal/Theming.kt b/emoji/src/main/kotlin/com/vanniktech/emoji/internal/Theming.kt
@@ -26,14 +26,22 @@ import android.graphics.drawable.RotateDrawable
 import android.graphics.drawable.VectorDrawable
 import android.os.Build
 import android.util.TypedValue
+import android.widget.EdgeEffect
 import android.widget.TextView
 import androidx.annotation.ColorInt
 import androidx.core.content.ContextCompat
 import androidx.core.graphics.drawable.DrawableCompat
 import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat
+import androidx.viewpager.widget.ViewPager
 import java.lang.reflect.Field
 import kotlin.math.sqrt
 
+// https://stackoverflow.com/a/27343228/1979703
+internal fun ViewPager.setEdgeColor(@ColorInt color: Int) {
+  (ViewPager::class.java.getFieldByName("mLeftEdge")?.get(this) as? EdgeEffect)?.color = color
+  (ViewPager::class.java.getFieldByName("mRightEdge")?.get(this) as? EdgeEffect)?.color = color
+}
+
 // https://stackoverflow.com/a/59488928/1979703
 @SuppressLint("PrivateApi")
 internal fun TextView.setHandlesColor(@ColorInt color: Int) {