From 964ffe360a42321823467430b715a3a612e4d650 Mon Sep 17 00:00:00 2001
From: tibbi <tibor@kaputa.sk>
Date: Mon, 13 Feb 2017 20:57:47 +0100
Subject: [PATCH] add the image rotating functions

---
 .../gallery/activities/ViewPagerActivity.kt   | 25 ++++++++++++++++---
 .../gallery/fragments/PhotoFragment.kt        | 10 +++++---
 2 files changed, 28 insertions(+), 7 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 0e21e0b2b..562bca2a8 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
@@ -21,6 +21,7 @@ import com.simplemobiletools.gallery.asynctasks.GetMediaAsynctask
 import com.simplemobiletools.gallery.dialogs.CopyDialog
 import com.simplemobiletools.gallery.dialogs.RenameFileDialog
 import com.simplemobiletools.gallery.extensions.*
+import com.simplemobiletools.gallery.fragments.PhotoFragment
 import com.simplemobiletools.gallery.fragments.ViewPagerFragment
 import com.simplemobiletools.gallery.helpers.MEDIUM
 import com.simplemobiletools.gallery.helpers.REQUEST_EDIT_IMAGE
@@ -39,6 +40,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
     private var mIsFullScreen = false
     private var mPos = -1
     private var mShowAll = false
+    private var mRotationDegrees = 0f
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -125,9 +127,9 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
             R.id.menu_edit -> openEditor(getCurrentFile())
             R.id.menu_properties -> showProperties()
             R.id.show_on_map -> showOnMap()
-            R.id.rotate_right -> {}
-            R.id.rotate_left -> {}
-            R.id.rotate_one_eighty -> {}
+            R.id.rotate_right -> rotateImageRight()
+            R.id.rotate_left -> rotateImageLeft()
+            R.id.rotate_one_eighty -> rotateImageOneEighty()
             else -> return super.onOptionsItemSelected(item)
         }
         return true
@@ -161,6 +163,23 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         })
     }
 
+    private fun rotateImageRight() {
+        mRotationDegrees += 90
+        getCurrentFragment().rotateImageViewBy(mRotationDegrees)
+    }
+
+    private fun rotateImageLeft() {
+        mRotationDegrees -= 90
+        getCurrentFragment().rotateImageViewBy(mRotationDegrees)
+    }
+
+    private fun rotateImageOneEighty() {
+        mRotationDegrees += 180
+        getCurrentFragment().rotateImageViewBy(mRotationDegrees)
+    }
+
+    private fun getCurrentFragment() = ((view_pager.adapter as MyPagerAdapter).getCurrentFragment(view_pager.currentItem) as PhotoFragment)
+
     private fun showProperties() {
         if (getCurrentMedium() != null)
             PropertiesDialog(this, getCurrentMedium()!!.path, false)
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 9b83c9348..24a017d3a 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/fragments/PhotoFragment.kt
@@ -144,17 +144,19 @@ class PhotoFragment : ViewPagerFragment() {
                     }
 
                     override fun onResourceReady(bitmap: Bitmap?, model: String?, target: Target<Bitmap>?, isFromMemoryCache: Boolean, isFirstResource: Boolean): Boolean {
-                        if (degrees == 0f)
+                        if (degrees == 0f) {
                             addZoomableView()
+                        } else {
+                            photo_view.beVisible()
+                            subsampling_view.beGone()
+                        }
                         return false
                     }
                 }).into(glideView)
     }
 
     fun rotateImageViewBy(degrees: Float) {
-        loadBitmap(degrees)
-        photo_view.beVisible()
-        subsampling_view.beGone()
+        loadBitmap(degrees % 360)
     }
 
     private fun addZoomableView() {