center the selected bitmap at drawing

app/src/main/kotlin/com/simplemobiletools/draw/MyCanvas.kt

@@ -1,12 +1,18 @@
 package com.simplemobiletools.draw
 
+import android.app.Activity
 import android.content.Context
-import android.graphics.*
+import android.graphics.Bitmap
+import android.graphics.Canvas
+import android.graphics.Color
+import android.graphics.Paint
 import android.os.Parcel
 import android.os.Parcelable
 import android.util.AttributeSet
 import android.view.MotionEvent
 import android.view.View
+import com.bumptech.glide.Glide
+import com.bumptech.glide.load.DecodeFormat
 import com.simplemobiletools.commons.extensions.getContrastColor
 import java.util.*
 
@@ -86,10 +92,20 @@ class MyCanvas(context: Context, attrs: AttributeSet) : View(context, attrs) {
         return bitmap
     }
 
-    fun drawBitmap(path: String) {
-        mBackgroundBitmap = BitmapFactory.decodeFile(path)
+    fun drawBitmap(activity: Activity, path: String) {
+        Thread({
+            mBackgroundBitmap = Glide.with(context)
+                    .load(path)
+                    .asBitmap()
+                    .format(DecodeFormat.PREFER_ARGB_8888)
+                    .fitCenter()
+                    .into(width, height)
+                    .get()
+            activity.runOnUiThread {
                 invalidate()
             }
+        }).start()
+    }
 
     fun addPath(path: MyPath, options: PaintOptions) {
         mPaths.put(path, options)

app/src/main/kotlin/com/simplemobiletools/draw/activities/MainActivity.kt

@@ -118,7 +118,7 @@ class MainActivity : SimpleActivity(), MyCanvas.PathsChangedListener {
             my_canvas.mBackgroundBitmap = null
             Svg.loadSvg(this, File(path), my_canvas)
         } else if (File(path).isImageSlow()) {
-            my_canvas.drawBitmap(path)
+            my_canvas.drawBitmap(this, path)
         } else {
             toast(R.string.invalid_file_format)
         }