From dee1971814e10e1756f6ab6dc73f4bfd3020e9b7 Mon Sep 17 00:00:00 2001
From: SpiritCroc <dev@spiritcroc.de>
Date: Mon, 28 Dec 2020 14:20:12 +0100
Subject: [PATCH] Workaround for wrongly aligned textView for RTL locales

Change-Id: I77e48dbc8a0c93337d9c2d2c56025ae222d291d8
---
 .../app/core/ui/views/FooteredTextView.kt     | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/vector/src/main/java/im/vector/app/core/ui/views/FooteredTextView.kt b/vector/src/main/java/im/vector/app/core/ui/views/FooteredTextView.kt
index 84c4ece519..8760bb6ff6 100644
--- a/vector/src/main/java/im/vector/app/core/ui/views/FooteredTextView.kt
+++ b/vector/src/main/java/im/vector/app/core/ui/views/FooteredTextView.kt
@@ -1,6 +1,7 @@
 package im.vector.app.core.ui.views
 
 import android.content.Context
+import android.graphics.Canvas
 import android.util.AttributeSet
 import androidx.appcompat.widget.AppCompatTextView
 import kotlin.math.ceil
@@ -19,10 +20,16 @@ class FooteredTextView @JvmOverloads constructor(
     var footerWidth: Int = 0
     //var widthLimit: Float = 0f
 
+    // Workaround to RTL languages with non-RTL content messages aligning left instead of start
+    private var requiredHorizontalCanvasMove = 0f
+
     override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
         // First, let super measure the content for our normal TextView use
         super.onMeasure(widthMeasureSpec, heightMeasureSpec)
 
+        // Default case
+        requiredHorizontalCanvasMove = 0f
+
         // Get max available width
         //val widthMode = MeasureSpec.getMode(widthMeasureSpec)
         val widthSize = MeasureSpec.getSize(widthMeasureSpec)
@@ -70,6 +77,10 @@ class FooteredTextView @JvmOverloads constructor(
             // Reserve extra horizontal footer space if necessary
             if (widthWithHorizontalFooter > newWidth) {
                 newWidth = ceil(widthWithHorizontalFooter).toInt()
+
+                if (viewIsRtl) {
+                    requiredHorizontalCanvasMove = widthWithHorizontalFooter - measuredWidth
+                }
             }
         } else {
             // Reserve vertical footer space
@@ -78,4 +89,13 @@ class FooteredTextView @JvmOverloads constructor(
 
         setMeasuredDimension(newWidth, newHeight)
     }
+
+    override fun onDraw(canvas: Canvas?) {
+        // Workaround to RTL languages with non-RTL content messages aligning left instead of start
+        if (requiredHorizontalCanvasMove > 0f) {
+            canvas?.translate(requiredHorizontalCanvasMove, 0f)
+        }
+
+        super.onDraw(canvas)
+    }
 }