From 61f3e184c2d40de4de98c510a7449383d6bed2cc Mon Sep 17 00:00:00 2001
From: Thyphoon <thyphoonfr@gmail.com>
Date: Sun, 14 Sep 2025 16:26:07 +0200
Subject: [PATCH] Version 8.2

---
 Thumbnails.pb | 47 +++++++++++++++++++++++++++++++----------------
 1 file changed, 31 insertions(+), 16 deletions(-)

diff --git a/Thumbnails.pb b/Thumbnails.pb
index 2f1dad1..467000d 100644
--- a/Thumbnails.pb
+++ b/Thumbnails.pb
@@ -1,7 +1,7 @@
 ; ******************************************************************** 
 ; Program:           Thumbnails
 ; Description:       add a Thumbnails to select image 
-; Version:           8.1
+; Version:           8.2
 ; Author:            Thyphoon
 ; Date:              August, 2021
 ; License:           Free, unrestricted, credit 
@@ -356,6 +356,7 @@ Module Thumbs
     CursorDeltaY.l
     ThumbsDeltaY.l
     ZoneClick.l               ;1 ScrollBar 2;Thumbs
+    LastIndexSelected.i       ; Last Index Selected
     
     ;DPI Aware Value
     _GadgetWidth.l
@@ -495,9 +496,10 @@ Module Thumbs
           Debug "No Set CallBackLoadFromIndex"
         EndIf 
         Cache::AutoLoadStart() 
+      Else 
+        Delay(50)
       EndIf 
-      Delay(5)
-    ForEver
+    Until *Gdt\Quit=#True  
   EndProcedure
   
   Procedure LimitIndex(GadgetId.i,IndexMax.i=-1)
@@ -544,14 +546,14 @@ Module Thumbs
         DeltaIndex=Int(*Gdt\ThumbsDeltaY/*Gdt\_Size)* *Gdt\NbH
         *Gdt\Index=*Gdt\Index-DeltaIndex
         *Gdt\ThumbsDeltaY=*Gdt\ThumbsDeltaY%*Gdt\_Size
-        CreateThread(@UpdateIndexs(),GadgetId)
+        UpdateIndexs(GadgetId)
       EndIf
       
       If *Gdt\ThumbsDeltaY<=-*Gdt\_Size 
         DeltaIndex=Abs(Int(*Gdt\ThumbsDeltaY/*Gdt\_Size)* *Gdt\NbH)
         *Gdt\Index=*Gdt\Index+DeltaIndex
         *Gdt\ThumbsDeltaY=*Gdt\ThumbsDeltaY%*Gdt\_Size
-        CreateThread(@UpdateIndexs(),GadgetId)
+        UpdateIndexs(GadgetId)
       EndIf
       
       ;Limit Scroll
@@ -706,20 +708,20 @@ Module Thumbs
             If *Gdt\Index<*Gdt\IndexMax
               *Gdt\ThumbsDeltaY=0
               *Gdt\Index=*Gdt\Index+*Gdt\NbH
-              CreateThread(@UpdateIndexs(),*Gdt\GadgetId)
+              UpdateIndexs(*Gdt\GadgetId)
               SignalSemaphore(*Gdt\DrawSemaphore) ; Redraw Image
             EndIf 
           Case #PB_Shortcut_PageUp
             If *Gdt\Index>0
               *Gdt\ThumbsDeltaY=0
               *Gdt\Index=*Gdt\Index-*Gdt\NbH
-              CreateThread(@UpdateIndexs(),*Gdt\GadgetId)
+              UpdateIndexs(*Gdt\GadgetId)
               SignalSemaphore(*Gdt\DrawSemaphore) ; Redraw Image
             EndIf
         EndSelect
       Case #PB_EventType_Resize
         InitGadgetValue(*Gdt\GadgetId)
-        CreateThread(@UpdateIndexs(),*Gdt\GadgetId)
+        UpdateIndexs(*Gdt\GadgetId)
         SignalSemaphore(*Gdt\DrawSemaphore) ; Redraw Image
       Case #PB_EventType_LostFocus
         *Gdt\StartScroll=#False
@@ -773,15 +775,26 @@ Module Thumbs
           Protected ny.l=(my-*Gdt\_MarginV-*Gdt\ThumbsDeltaY)/(*Gdt\_Size+*Gdt\_MarginV)
           Protected index.l=nx+ny**Gdt\NbH
           index=*Gdt\Index+index
+          
+          ;If GetGadgetAttribute(*Gdt\GadgetId,#PB_Canvas_Modifiers)=#PB_Canvas_Shift
+          
+         
+          
           LockMutex(*Gdt\ThumbPointerlistMutex)
-          Debug FindMapElement(*Gdt\ThumbPointerList(),Str(index))
-          If FindMapElement(*Gdt\ThumbPointerList(),Str(index))
+          Protected i.i
+          Debug "Select "+Str(*Gdt\LastIndexSelected)+" to "+Str(index)
+          For i=*Gdt\LastIndexSelected To index
+          Debug FindMapElement(*Gdt\ThumbPointerList(),Str(i))
+          If FindMapElement(*Gdt\ThumbPointerList(),Str(i))
             *Ptr=*Gdt\ThumbPointerList()
             If *Ptr>0
               *Ptr\Selected=1-*Ptr\Selected
-              Debug "["+Str(index)+"] Selected="+Str(*Ptr\Selected)
+              Debug "["+Str(i)+"] Selected="+Str(*Ptr\Selected)
             EndIf   
-          EndIf 
+          EndIf
+        Next
+        ;EndIf 
+        *Gdt\LastIndexSelected=index
           UnlockMutex(*Gdt\ThumbPointerlistMutex)
           SignalSemaphore(*Gdt\DrawSemaphore) ; Redraw Image
         EndIf 
@@ -822,9 +835,9 @@ Module Thumbs
       InitGadgetValue(GadgetId)
       If CallBack
         SetCallBackLoadFromIndex(GadgetId,CallBack)
-        CreateThread(@UpdateIndexs(),GadgetId)
+        UpdateIndexs(GadgetId)
       EndIf
-      CreateThread(@UpdateImage2Index(),GadgetId)
+      *Gdt\CallBackUpdateThread=CreateThread(@UpdateImage2Index(),GadgetId)
       *Gdt\ThreadDrawCanvasImage=CreateThread(@DrawCanvasImage(),GadgetId)
       BindGadgetEvent(GadgetId,@ThumbsEvent(),#PB_All)
     Else
@@ -839,6 +852,7 @@ Module Thumbs
       *Gdt\Quit=#True
       WaitThread(*Gdt\ThreadDrawCanvasImage)
       FreeMutex(*Gdt\ThumbPointerListMutex)
+      WaitThread(*Gdt\CallBackUpdateThread)
       FreeMutex(*Gdt\CallBackMutex)
       FreeSemaphore(*Gdt\DrawSemaphore)
       FreeMap(*Gdt\ThumbPointerList())
@@ -880,7 +894,7 @@ Module Thumbs
       
     Next
     UnlockMutex(*Gdt\ThumbPointerlistMutex)
-    CreateThread(@UpdateIndexs(),GadgetId)
+    UpdateIndexs(GadgetId)
   EndProcedure
 EndModule
 
@@ -986,7 +1000,8 @@ CompilerIf #PB_Compiler_IsMainFile
   EndIf
 CompilerEndIf
 ; IDE Options = PureBasic 6.21 (Windows - x64)
-; CursorPosition = 3
+; CursorPosition = 1000
+; FirstLine = 953
 ; Folding = ------
 ; EnableXP
 ; DPIAware
\ No newline at end of file