Capture ImGui mouse state.

server/TracyMouse.cpp

@@ -1,26 +1,51 @@
 #include "TracyMouse.hpp"
 
+#include "../imgui/imgui_internal.h"
+
 namespace tracy
 {
 
+static constexpr int MouseButtons = IM_ARRAYSIZE( ImGuiContext::IO.MouseDown );
+
+struct Mouse
+{
+    bool mouseDown[MouseButtons];
+    bool mouseClicked[MouseButtons];
+    bool mouseDragging[MouseButtons];
+    ImVec2 mouseDragDelta[MouseButtons];
+};
+
+static Mouse s_mouse;
+
+void MouseFrame()
+{
+    for( int i=0; i<MouseButtons; i++ )
+    {
+        s_mouse.mouseDown[i] = ImGui::IsMouseDown( i );
+        s_mouse.mouseClicked[i] = ImGui::IsMouseClicked( i );
+        s_mouse.mouseDragging[i] = ImGui::IsMouseDragging( i, 0 );
+        s_mouse.mouseDragDelta[i] = ImGui::GetMouseDragDelta( i, 0 );
+    }
+}
+
 bool IsMouseDown( ImGuiMouseButton button )
 {
-    return ImGui::IsMouseDown( button );
+    return s_mouse.mouseDown[button];
 }
 
 bool IsMouseClicked( ImGuiMouseButton button )
 {
-    return ImGui::IsMouseClicked( button );
+    return s_mouse.mouseClicked[button];
 }
 
 bool IsMouseDragging( ImGuiMouseButton button, float lock_threshold )
 {
-    return ImGui::IsMouseDragging( button, lock_threshold );
+    return s_mouse.mouseDragging[button];
 }
 
 ImVec2 GetMouseDragDelta( ImGuiMouseButton button, float lock_threshold )
 {
-    return ImGui::GetMouseDragDelta( button, lock_threshold );
+    return s_mouse.mouseDragDelta[button];
 }
 
 }

server/TracyMouse.hpp

@@ -6,6 +6,8 @@
 namespace tracy
 {
 
+void MouseFrame();
+
 bool IsMouseDown( ImGuiMouseButton button );
 bool IsMouseClicked( ImGuiMouseButton button );
 bool IsMouseDragging( ImGuiMouseButton button, float lock_threshold = -1.f );