Merge pull request #75692 from db48x/vehicle-appliance-menu-offset

provide a desired_bounds for the vehicle appliance interaction menu

src/veh_appliance.cpp

@@ -1,5 +1,6 @@
 #include "game.h"
 #include "handle_liquid.h"
+#include "imgui/imgui.h"
 #include "inventory.h"
 #include "itype.h"
 #include "map_iterator.h"
@@ -173,14 +174,24 @@ void veh_app_interact::init_ui_windows()
     }
     const int width_info = win_width - 2;
     const int height_input = app_actions.size();
-    const int height = height_info + height_input + 2;
+    const int win_height = height_info + 2;
+    const int full_height = win_height + height_input;
 
     // Center the UI
-    point topleft( TERMX / 2 - win_width / 2, TERMY / 2 - height / 2 );
-    w_border = catacurses::newwin( height, win_width, topleft );
+    point topleft( TERMX / 2 - win_width / 2, TERMY / 2 - full_height / 2 );
+    w_border = catacurses::newwin( win_height, win_width, topleft );
     //NOLINTNEXTLINE(cata-use-named-point-constants)
     w_info = catacurses::newwin( height_info, width_info, topleft + point( 1, 1 ) );
 
+    ImVec2 text_metrics = { ImGui::CalcTextSize( "X" ).x, ImGui::GetTextLineHeight() };
+    ImVec2 origin = text_metrics * ImVec2{ static_cast<float>( topleft.x ), static_cast<float>( topleft.y + win_height ) };
+    ImVec2 size = text_metrics * ImVec2{ static_cast<float>( win_width ), static_cast<float>( height_input ) };
+    imenu.desired_bounds = { origin.x,
+                             origin.y,
+                             size.x,
+                             size.y + 4.0f * ( ImGui::GetStyle().FramePadding.y + ImGui::GetStyle().WindowBorderSize )
+                           };
+
     imenu.allow_cancel = true;
     imenu.border_color = c_white;
     imenu.setup();