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Tables: fixed a bug where nesting BeginTable()->Begin()->BeginTable(). (#9005)

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ocornut
2025-10-15 16:50:11 +02:00
parent 7d8d587bc0
commit d7fec5e1d3
3 changed files with 9 additions and 2 deletions
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5
docs/CHANGELOG.txt
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@@ -43,6 +43,11 @@ Breaking Changes:
Other Changes:
- Tables: fixed a bug where nesting BeginTable()->Begin()->BeginTable() would
result in temporarily incorrect state, which would lead to bugs to side effects
in various locations, e.g. GetContentRegionAvail() calls or using clipper. (#9005)
EndTable() was mistakenly restoring a wrong current table.
-----------------------------------------------------------------------
VERSION 1.92.4 (Released 2025-10-14)

1
imgui_internal.h
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@@ -3045,6 +3045,7 @@ struct IMGUI_API ImGuiTable
// sizeof() ~ 136 bytes.
struct IMGUI_API ImGuiTableTempData
{
ImGuiID WindowID; // Shortcut to g.Tables[TableIndex]->OuterWindow->ID.
int TableIndex; // Index in g.Tables.Buf[] pool
float LastTimeActive; // Last timestamp this structure was used
float AngledHeadersExtraWidth; // Used in EndTable()

5
imgui_tables.cpp
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@@ -464,6 +464,7 @@ bool ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
table->HostIndentX = inner_window->DC.Indent.x;
table->HostClipRect = inner_window->ClipRect;
table->HostSkipItems = inner_window->SkipItems;
temp_data->WindowID = inner_window->ID;
temp_data->HostBackupWorkRect = inner_window->WorkRect;
temp_data->HostBackupParentWorkRect = inner_window->ParentWorkRect;
temp_data->HostBackupColumnsOffset = outer_window->DC.ColumnsOffset;
@@ -1366,7 +1367,7 @@ void ImGui::EndTable()
ImGuiWindow* inner_window = table->InnerWindow;
ImGuiWindow* outer_window = table->OuterWindow;
ImGuiTableTempData* temp_data = table->TempData;
IM_ASSERT(inner_window == g.CurrentWindow);
IM_ASSERT(inner_window == g.CurrentWindow && inner_window->ID == temp_data->WindowID);
IM_ASSERT(outer_window == inner_window || outer_window == inner_window->ParentWindow);
if (table->IsInsideRow)
@@ -1559,7 +1560,7 @@ void ImGui::EndTable()
IM_ASSERT(g.CurrentWindow == outer_window && g.CurrentTable == table);
IM_ASSERT(g.TablesTempDataStacked > 0);
temp_data = (--g.TablesTempDataStacked > 0) ? &g.TablesTempData[g.TablesTempDataStacked - 1] : NULL;
g.CurrentTable = temp_data ? g.Tables.GetByIndex(temp_data->TableIndex) : NULL;
g.CurrentTable = temp_data && (temp_data->WindowID == outer_window->ID) ? g.Tables.GetByIndex(temp_data->TableIndex) : NULL;
if (g.CurrentTable)
{
g.CurrentTable->TempData = temp_data;