Added support for tooltip to widgets (#586)

Author: adriengivry

Sources/Overload/OvUI/include/OvUI/Widgets/AWidget.h

@@ -71,6 +71,7 @@ namespace OvUI::Widgets
 		virtual void _Draw_Impl() = 0;
 
 	public:
+		std::string tooltip;
 		bool enabled = true;
 		bool disabled = false;
 		bool lineBreak = true;

Sources/Overload/OvUI/src/OvUI/Widgets/AWidget.cpp

@@ -56,6 +56,14 @@ void OvUI::Widgets::AWidget::Draw()
 
 		_Draw_Impl();
 
+		if (!tooltip.empty())
+		{
+			if (ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled))
+			{
+				ImGui::SetTooltip(tooltip.c_str());
+			}
+		}
+
 		if (disabled)
 		{
 			ImGui::EndDisabled();