Internals: made MousePos an argument of UpdateHoveredWindowAndCaptureFlags(). (#8431, #1152)

Author: ocornut

imgui.cpp

@@ -5058,7 +5058,7 @@ static bool IsWindowActiveAndVisible(ImGuiWindow* window)
 }
 
 // The reason this is exposed in imgui_internal.h is: on touch-based system that don't have hovering, we want to dispatch inputs to the right target (imgui vs imgui+app)
-void ImGui::UpdateHoveredWindowAndCaptureFlags()
+void ImGui::UpdateHoveredWindowAndCaptureFlags(const ImVec2& mouse_pos)
 {
     ImGuiContext& g = *GImGui;
     ImGuiIO& io = g.IO;
@@ -5072,7 +5072,7 @@ void ImGui::UpdateHoveredWindowAndCaptureFlags()
     // - When moving a window we can skip the search, which also conveniently bypasses the fact that window->WindowRectClipped is lagging as this point of the frame.
     // - We also support the moved window toggling the NoInputs flag after moving has started in order to be able to detect windows below it, which is useful for e.g. docking mechanisms.
     bool clear_hovered_windows = false;
-    FindHoveredWindowEx(g.IO.MousePos, false, &g.HoveredWindow, &g.HoveredWindowUnderMovingWindow);
+    FindHoveredWindowEx(mouse_pos, false, &g.HoveredWindow, &g.HoveredWindowUnderMovingWindow);
     g.HoveredWindowBeforeClear = g.HoveredWindow;
 
     // Modal windows prevents mouse from hovering behind them.
@@ -5343,7 +5343,7 @@ void ImGui::NewFrame()
     // Find hovered window
     // (needs to be before UpdateMouseMovingWindowNewFrame so we fill g.HoveredWindowUnderMovingWindow on the mouse release frame)
     // (currently needs to be done after the WasActive=Active loop and FindHoveredWindowEx uses ->Active)
-    UpdateHoveredWindowAndCaptureFlags();
+    UpdateHoveredWindowAndCaptureFlags(g.IO.MousePos);
 
     // Handle user moving window with mouse (at the beginning of the frame to avoid input lag or sheering)
     UpdateMouseMovingWindowNewFrame();

imgui_internal.h

@@ -3049,7 +3049,7 @@ namespace ImGui
 
     // NewFrame
     IMGUI_API void          UpdateInputEvents(bool trickle_fast_inputs);
-    IMGUI_API void          UpdateHoveredWindowAndCaptureFlags();
+    IMGUI_API void          UpdateHoveredWindowAndCaptureFlags(const ImVec2& mouse_pos);
     IMGUI_API void          FindHoveredWindowEx(const ImVec2& pos, bool find_first_and_in_any_viewport, ImGuiWindow** out_hovered_window, ImGuiWindow** out_hovered_window_under_moving_window);
     IMGUI_API void          StartMouseMovingWindow(ImGuiWindow* window);
     IMGUI_API void          UpdateMouseMovingWindowNewFrame();