added 'tooltip-delay' property

src/graphics/ui/elements/InventoryView.cpp

@@ -109,6 +109,7 @@ SlotView::SlotView(
     layout(layout)
 {
     setColor(glm::vec4(0, 0, 0, 0.2f));
+    setTooltipDelay(0.05f);
 }
 
 void SlotView::draw(const DrawContext* pctx, Assets* assets) {

src/graphics/ui/elements/UINode.cpp

@@ -137,6 +137,15 @@ const std::wstring UINode::getTooltip() const {
     return tooltip;
 }
 
+void UINode::setTooltipDelay(float delay) {
+    tooltipDelay = delay;
+}
+
+float UINode::getTooltipDelay() const {
+    return tooltipDelay;
+}
+
+
 glm::vec2 UINode::calcPos() const {
     if (parent) {
         return pos + parent->calcPos() + parent->contentOffset();

src/graphics/ui/elements/UINode.hpp

@@ -111,6 +111,8 @@ namespace gui {
         ActionsSet doubleClickCallbacks;
         /// @brief element tooltip text
         std::wstring tooltip;
+        /// @brief element tooltip delay
+        float tooltipDelay = 0.5f;
 
         UINode(glm::vec2 size);
     public:
@@ -202,6 +204,9 @@ namespace gui {
         virtual void setTooltip(const std::wstring& text);
         virtual const std::wstring getTooltip() const;
 
+        virtual void setTooltipDelay(float delay);
+        virtual float getTooltipDelay() const;
+
         virtual glm::vec4 calcColor() const;
 
         /// @brief Get inner content offset. Used for scroll