InputText, Style: added InputTextCursorSize to configure cursor/caret thickness. (#7031, #9409)

docs/CHANGELOG.txt

@@ -49,6 +49,9 @@ Other Changes:
     for user code to bypass it without using a clickable item. (#9382)
   - Clicking on a window's empty-space to move/focus a window checks
     for lack of queued focus request. (#9382)
+- InputText:
+  - Added style.InputTextCursorSize to configure cursor/caret thickness. (#7031, #9409)
+    This is automatically scaled by style.ScaleAllSizes().
 - Demo:
   - Extract 'Widgets->Tree Nodes->Selectable Nodes' out of the 'Advanced'
     demo for clarity (manual reimplementation of basic selection).

imgui.cpp

@@ -1537,6 +1537,7 @@ ImGuiStyle::ImGuiStyle()
     ColorButtonPosition         = ImGuiDir_Right;   // Side of the color button in the ColorEdit4 widget (left/right). Defaults to ImGuiDir_Right.
     ButtonTextAlign             = ImVec2(0.5f,0.5f);// Alignment of button text when button is larger than text.
     SelectableTextAlign         = ImVec2(0.0f,0.0f);// Alignment of selectable text. Defaults to (0.0f, 0.0f) (top-left aligned). It's generally important to keep this left-aligned if you want to lay multiple items on a same line.
+    InputTextCursorSize         = 1.0f;             // Thickness of cursor/caret in InputText().
     SeparatorSize               = 1.0f;             // Thickness of border in Separator().
     SeparatorTextBorderSize     = 3.0f;             // Thickness of border in SeparatorText().
     SeparatorTextAlign          = ImVec2(0.0f,0.5f);// Alignment of text within the separator. Defaults to (0.0f, 0.5f) (left aligned, center).
@@ -1612,6 +1613,7 @@ void ImGuiStyle::ScaleAllSizes(float scale_factor)
     DragDropTargetBorderSize = ImTrunc(DragDropTargetBorderSize * scale_factor);
     DragDropTargetPadding = ImTrunc(DragDropTargetPadding * scale_factor);
     ColorMarkerSize = ImTrunc(ColorMarkerSize * scale_factor);
+    InputTextCursorSize = ImTrunc(InputTextCursorSize * scale_factor);
     SeparatorSize = ImTrunc(SeparatorSize * scale_factor);
     SeparatorTextBorderSize = ImTrunc(SeparatorTextBorderSize * scale_factor);
     SeparatorTextPadding = ImTrunc(SeparatorTextPadding * scale_factor);

imgui.h

@@ -2339,6 +2339,7 @@ struct ImGuiStyle
     ImGuiDir    ColorButtonPosition;        // Side of the color button in the ColorEdit4 widget (left/right). Defaults to ImGuiDir_Right.
     ImVec2      ButtonTextAlign;            // Alignment of button text when button is larger than text. Defaults to (0.5f, 0.5f) (centered).
     ImVec2      SelectableTextAlign;        // Alignment of selectable text. Defaults to (0.0f, 0.0f) (top-left aligned). It's generally important to keep this left-aligned if you want to lay multiple items on a same line.
+    float       InputTextCursorSize;        // Thickness of cursor/caret in InputText().
     float       SeparatorSize;              // Thickness of border in Separator(). Must be >= 1.0f.
     float       SeparatorTextBorderSize;    // Thickness of border in SeparatorText()
     ImVec2      SeparatorTextAlign;         // Alignment of text within the separator. Defaults to (0.0f, 0.5f) (left aligned, center).

imgui_widgets.cpp

@@ -5643,7 +5643,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
         ImVec2 cursor_screen_pos = ImTrunc(draw_pos + cursor_offset - draw_scroll);
         ImRect cursor_screen_rect(cursor_screen_pos.x, cursor_screen_pos.y - g.FontSize + 0.5f, cursor_screen_pos.x + 1.0f, cursor_screen_pos.y - 1.5f);
         if (cursor_is_visible && cursor_screen_rect.Overlaps(clip_rect))
-            draw_window->DrawList->AddLineV(cursor_screen_rect.Min.x, cursor_screen_rect.Min.y, cursor_screen_rect.Max.y, GetColorU32(ImGuiCol_InputTextCursor), 1.0f * (float)(int)style._MainScale); // FIXME-DPI: Cursor thickness (#7031)
+            draw_window->DrawList->AddLineV(cursor_screen_rect.Min.x, cursor_screen_rect.Min.y, cursor_screen_rect.Max.y, GetColorU32(ImGuiCol_InputTextCursor), style.InputTextCursorSize);
 
         // Notify OS of text input position for advanced IME (-1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety.)
         // This is required for some backends (SDL3) to start emitting character/text inputs.