Drag and Drop: Source doesn't report as hovered (at a lower-level). Source disable AllowOverlap flag if any set. (#143)

imgui.cpp

@@ -7685,8 +7685,12 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
     bool pressed = false;
     bool hovered = ItemHoverable(bb, id);
 
+    // Drag source doesn't report as hovered
+    if (hovered && g.DragDropActive && g.DragDropPayload.SourceId == id)
+        hovered = false;
+
     // Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
-    if ((flags & ImGuiButtonFlags_PressedOnDragDropHold) && g.DragDropActive && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
+    if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
         if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
         {
             hovered = true;
@@ -11825,7 +11829,6 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
         SameLine();
         TextUnformatted("Color");
         EndDragDropSource();
-        hovered = false;
     }
 
     // Tooltip
@@ -13172,6 +13175,10 @@ bool ImGui::BeginDragDropSource(ImGuiDragDropFlags flags)
             if (g.ActiveId == source_id) // Allow the underlying widget to display/return hovered during the mouse release frame, else we would get a flicker.
                 g.ActiveIdAllowOverlap = is_hovered;
         }
+        else
+        {
+            g.ActiveIdAllowOverlap = false;
+        }
         if (g.ActiveId != source_id)
             return false;
         source_parent_id = window->IDStack.back();
@@ -13655,8 +13662,8 @@ void ImGui::ShowMetricsWindow(bool* p_open)
             const char* input_source_names[] = { "None", "Mouse", "Nav", "NavKeyboard", "NavGamepad" }; IM_ASSERT(IM_ARRAYSIZE(input_source_names) == ImGuiInputSource_COUNT);
             ImGui::Text("HoveredWindow: '%s'", g.HoveredWindow ? g.HoveredWindow->Name : "NULL");
             ImGui::Text("HoveredRootWindow: '%s'", g.HoveredRootWindow ? g.HoveredRootWindow->Name : "NULL");
-            ImGui::Text("HoveredId: 0x%08X/0x%08X (%.2f sec)", g.HoveredId, g.HoveredIdPreviousFrame, g.HoveredIdTimer); // Data is "in-flight" so depending on when the Metrics window is called we may see current frame information or not
-            ImGui::Text("ActiveId: 0x%08X/0x%08X (%.2f sec), ActiveIdSource: %s", g.ActiveId, g.ActiveIdPreviousFrame, g.ActiveIdTimer, input_source_names[g.ActiveIdSource]);
+            ImGui::Text("HoveredId: 0x%08X/0x%08X (%.2f sec), AllowOverlap: %d", g.HoveredId, g.HoveredIdPreviousFrame, g.HoveredIdTimer, g.HoveredIdAllowOverlap); // Data is "in-flight" so depending on when the Metrics window is called we may see current frame information or not
+            ImGui::Text("ActiveId: 0x%08X/0x%08X (%.2f sec), AllowOverlap: %d, Source: %s", g.ActiveId, g.ActiveIdPreviousFrame, g.ActiveIdTimer, g.ActiveIdAllowOverlap, input_source_names[g.ActiveIdSource]);
             ImGui::Text("ActiveIdWindow: '%s'", g.ActiveIdWindow ? g.ActiveIdWindow->Name : "NULL");
             ImGui::Text("MovingWindow: '%s'", g.MovingWindow ? g.MovingWindow->Name : "NULL");
             ImGui::Text("NavWindow: '%s'", g.NavWindow ? g.NavWindow->Name : "NULL");