Tables: fixed an issue where Columns Visible/Hidden state wouldn't be correctly overridden when hot-reloading .ini state. (ocornut#7934)

Author: ocornut

docs/CHANGELOG.txt

@@ -57,6 +57,8 @@ Other changes:
   which amusingly made it disappear when using very big font/frame size.
 - Tables: fixed calling SetNextWindowScroll() on clipped scrolling table
   to not leak the value into a subsequent window. (#8196)
+- Tables: fixed an issue where Columns Visible/Hidden state wouldn't be correctly
+  overridden when hot-reloading .ini state. (#7934)
 - TextLinkOpenURL(): fixed default Win32 io.PlatformOpenInShellFn handler to
   handle UTF-8 regardless of system regional settings. (#7660) [@achabense]
 - Demo: Combos: demonstrate a very simple way to add a filter to a combo,
@@ -67,6 +69,7 @@ Other changes:
 - Backends: WebGPU: Fix for DAWN API rename WGPUProgrammableStageDescriptor -> WGPUComputeState.
   [@PhantomCloak] (#8369)
 
+
 -----------------------------------------------------------------------
  VERSION 1.91.8 (Released 2025-01-31)
 -----------------------------------------------------------------------

imgui_internal.h

@@ -2944,7 +2944,7 @@ struct ImGuiTableColumnSettings
     ImGuiTableColumnIdx     DisplayOrder;
     ImGuiTableColumnIdx     SortOrder;
     ImU8                    SortDirection : 2;
-    ImU8                    IsEnabled : 1; // "Visible" in ini file
+    ImS8                    IsEnabled : 2; // "Visible" in ini file
     ImU8                    IsStretch : 1;
 
     ImGuiTableColumnSettings()
@@ -2954,7 +2954,7 @@ struct ImGuiTableColumnSettings
         Index = -1;
         DisplayOrder = SortOrder = -1;
         SortDirection = ImGuiSortDirection_None;
-        IsEnabled = 1;
+        IsEnabled = -1;
         IsStretch = 0;
     }
 };

imgui_tables.cpp

@@ -3741,7 +3741,7 @@ void ImGui::TableLoadSettings(ImGuiTable* table)
         else
             column->DisplayOrder = (ImGuiTableColumnIdx)column_n;
         display_order_mask |= (ImU64)1 << column->DisplayOrder;
-        column->IsUserEnabled = column->IsUserEnabledNextFrame = column_settings->IsEnabled;
+        column->IsUserEnabled = column->IsUserEnabledNextFrame = (column_settings->IsEnabled != -1 ? column_settings->IsEnabled == 1 : (column->Flags & ImGuiTableColumnFlags_DefaultHide) ? 0 : 1);
         column->SortOrder = column_settings->SortOrder;
         column->SortDirection = column_settings->SortDirection;
     }