Selectable: Fixed horizontal label alignment with SelectableTextAlign.x > 0 and specifying a selectable size. (ocornut#8338)

Regression from ed7551c

Author: ocornut

docs/CHANGELOG.txt

@@ -47,7 +47,6 @@ Breaking changes:
   Note that it was also added to ImGui_ImplVulkan_InitInfo but for the later it is optional.
   (#8326, #8365, #8400)
 
-
 Other changes:
 
 - Fixed IsItemDeactivatedAfterEdit() signal being broken for Checkbox(),
@@ -71,6 +70,8 @@ Other changes:
 - Tables: tamed some .ini settings optimizations to more accurately allow
   overwriting/hot-reloading settings in more situations. (#7934)
 - Tables, Error Handling: Recovery from invalid index in TableSetColumnIndex(). (#1651)
+- Selectable: Fixed horizontal label alignment with SelectableTextAlign.x > 0 and
+  specifying a selectable size. (#8338)
 - Styles, Tabs: made the Close Button of selected tabs always visible by default,
   without requiring to hover the tab. (#8387)
   - Added style.TabCloseButtonMinWidthSelected/TabCloseButtonMinWidthUnselected settings

imgui_widgets.cpp

@@ -7101,7 +7101,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
 
     // Text stays at the submission position. Alignment/clipping extents ignore SpanAllColumns.
     if (is_visible)
-        RenderTextClipped(pos, ImVec2(window->WorkRect.Max.x, pos.y + size.y), label, NULL, &label_size, style.SelectableTextAlign, &bb);
+        RenderTextClipped(pos, ImVec2(ImMin(pos.x + size.x, window->WorkRect.Max.x), pos.y + size.y), label, NULL, &label_size, style.SelectableTextAlign, &bb);
 
     // Automatically close popups
     if (pressed && (window->Flags & ImGuiWindowFlags_Popup) && !(flags & ImGuiSelectableFlags_NoAutoClosePopups) && (g.LastItemData.ItemFlags & ImGuiItemFlags_AutoClosePopups))