From e1ddcda5248d2106bdb2d7da3bc814c8fed4f1cf Mon Sep 17 00:00:00 2001
From: tibbi <tibor@kaputa.sk>
Date: Sat, 18 Mar 2017 12:42:13 +0100
Subject: [PATCH] preload just 1 fullscreen image per side, with more dynamic
 resolution

---
 .../simplemobiletools/gallery/activities/ViewPagerActivity.kt  | 3 ++-
 .../com/simplemobiletools/gallery/fragments/PhotoFragment.kt   | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
index 6b1a26c38..8941b48b1 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
@@ -54,6 +54,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     companion object {
         var screenWidth = 0
         var screenHeight = 0
+        var screenDensity = 0f
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -174,13 +175,13 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         windowManager.defaultDisplay.getMetrics(metrics)
         screenWidth = metrics.widthPixels
         screenHeight = metrics.heightPixels
+        screenDensity = metrics.density
     }
 
     private fun updatePagerItems() {
         val pagerAdapter = MyPagerAdapter(this, supportFragmentManager, mMedia)
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1 && !isDestroyed) {
             view_pager?.apply {
-                offscreenPageLimit = 2
                 adapter = pagerAdapter
                 currentItem = mPos
                 addOnPageChangeListener(this@ViewPagerActivity)
diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt
index c84784e9b..2f647d44a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt
@@ -134,9 +134,10 @@ class PhotoFragment : ViewPagerFragment() {
     }
 
     private fun loadBitmap(degrees: Float = 0f) {
+        val densiy = ViewPagerActivity.screenDensity
         Picasso.with(activity)
                 .load("file:${medium.path}")
-                .resize(ViewPagerActivity.screenWidth * 2, ViewPagerActivity.screenHeight * 2)
+                .resize((ViewPagerActivity.screenWidth * densiy).toInt(), (ViewPagerActivity.screenHeight * densiy).toInt())
                 .priority(if (isFragmentVisible) Picasso.Priority.HIGH else Picasso.Priority.LOW)
                 .rotate(degrees)
                 .centerInside()