Added BeginPopupContextItem() / BeginPopupContextWindow() (#126)

imgui.cpp

@@ -3171,6 +3171,21 @@ void ImGui::EndPopup()
     ImGui::PopStyleVar();
 }
 
+bool ImGui::BeginPopupContextItem(const char* str_id, int button)
+{
+    if (ImGui::IsItemHovered() && ImGui::IsMouseClicked(button))
+        ImGui::OpenPopup(str_id);
+    return ImGui::BeginPopup(str_id);
+}
+
+bool ImGui::BeginPopupContextWindow(const char* str_id, bool void_only, int button)
+{
+    if (ImGui::IsMouseHoveringWindow() && ImGui::IsMouseClicked(button))
+        if (!void_only || !ImGui::IsAnyItemHovered())
+            ImGui::OpenPopup(str_id);
+    return ImGui::BeginPopup(str_id);
+}
+
 bool ImGui::BeginChild(const char* str_id, const ImVec2& size_arg, bool border, ImGuiWindowFlags extra_flags)
 {
     ImGuiState& g = *GImGui;
@@ -11694,6 +11709,11 @@ struct ExampleAppConsole
         // NB- if you have thousands of entries this approach may be too inefficient. You can seek and display only the lines that are visible - CalcListClipping() is a helper to compute this information.
         // If your items are of variable size you may want to implement code similar to what CalcListClipping() does. Or split your data into fixed height items to allow random-seeking into your list.
         ImGui::BeginChild("ScrollingRegion", ImVec2(0,-ImGui::GetTextLineHeightWithSpacing()*2));
+        if (ImGui::BeginPopupContextWindow())
+        {
+            if (ImGui::Selectable("Clear")) ClearLog();
+            ImGui::EndPopup();
+        }
         ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(4,1)); // Tighten spacing
         for (size_t i = 0; i < Items.size(); i++)
         {

imgui.h

@@ -169,6 +169,8 @@ namespace ImGui
     // Popup
     IMGUI_API void          OpenPopup(const char* str_id);                                      // mark popup as open. popup identifiers are relative to the current ID-stack (so OpenPopup and BeginPopup needs to be at the same level). close childs popups if any. will close popup when user click outside, or activate a pressable item, or CloseCurrentPopup() is called within a BeginPopup()/EndPopup() block.
     IMGUI_API bool          BeginPopup(const char* str_id);                                     // return true if popup if opened and start outputting to it. only call EndPopup() if BeginPopup() returned true!
+    IMGUI_API bool          BeginPopupContextItem(const char* str_id, int button = 1);          // open popup when clicked on last item
+    IMGUI_API bool          BeginPopupContextWindow(const char* str_id = "window_context_menu", bool void_only = false, int button = 1);  // open popup when clicked on current window
     IMGUI_API void          EndPopup();
     IMGUI_API void          CloseCurrentPopup();                                                // close the popup we have begin-ed into. clicking on a MenuItem or Selectable automatically close the current popup.