From e030f85d108f93d55bfc77c8004e5a893ae91042 Mon Sep 17 00:00:00 2001
From: RaJansuMan <rajansuman180@gmail.com>
Date: Fri, 28 Feb 2025 15:50:17 +0530
Subject: [PATCH] Initial Image Zoom and acceptable difference

---
 .../kotlin/org/fossify/gallery/fragments/PhotoFragment.kt | 8 +++++++-
 .../main/kotlin/org/fossify/gallery/helpers/Constants.kt  | 1 +
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/app/src/main/kotlin/org/fossify/gallery/fragments/PhotoFragment.kt b/app/src/main/kotlin/org/fossify/gallery/fragments/PhotoFragment.kt
index c97d56290..5323f351d 100644
--- a/app/src/main/kotlin/org/fossify/gallery/fragments/PhotoFragment.kt
+++ b/app/src/main/kotlin/org/fossify/gallery/fragments/PhotoFragment.kt
@@ -89,6 +89,8 @@ class PhotoFragment : ViewPagerFragment() {
     private var mScreenWidth = 0
     private var mScreenHeight = 0
     private var mCurrentGestureViewZoom = 1f
+    private var mIsTouched = false
+    private var mInitialZoom = 1f
 
     private var mStoredShowExtendedDetails = false
     private var mStoredHideExtendedDetails = false
@@ -145,12 +147,16 @@ class PhotoFragment : ViewPagerFragment() {
 
                 gesturesView.controller.addOnStateChangeListener(object : GestureController.OnStateChangeListener {
                     override fun onStateChanged(state: State) {
+                        if(!mIsTouched){
+                            mInitialZoom = state.zoom
+                        }
                         mCurrentGestureViewZoom = state.zoom
                     }
                 })
 
                 gesturesView.setOnTouchListener { v, event ->
-                    if (mCurrentGestureViewZoom == 1f) {
+                    mIsTouched = true
+                    if (Math.abs(mCurrentGestureViewZoom -mInitialZoom)< MAX_ZOOM_DIFFERENCE) {
                         handleEvent(event)
                     }
                     false
diff --git a/app/src/main/kotlin/org/fossify/gallery/helpers/Constants.kt b/app/src/main/kotlin/org/fossify/gallery/helpers/Constants.kt
index 70c03b259..2d117917f 100644
--- a/app/src/main/kotlin/org/fossify/gallery/helpers/Constants.kt
+++ b/app/src/main/kotlin/org/fossify/gallery/helpers/Constants.kt
@@ -134,6 +134,7 @@ const val SHOW_TEMP_HIDDEN_DURATION = 300000L
 const val CLICK_MAX_DURATION = 150
 const val CLICK_MAX_DISTANCE = 100
 const val MAX_CLOSE_DOWN_GESTURE_DURATION = 300
+const val MAX_ZOOM_DIFFERENCE = 0.01
 const val DRAG_THRESHOLD = 8
 const val MONTH_MILLISECONDS = MONTH_SECONDS * 1000L
 const val MIN_SKIP_LENGTH = 2000