frame delta, hand cursor on button hover

Author: aloneguid

grey/widgets.cpp

@@ -885,6 +885,9 @@ namespace grey::widgets {
             clicked = ImGui::Button(text.c_str(), ImVec2(width, 0));
         }
 
+        if(is_hovered())
+            mouse_cursor(mouse_cursor_type::hand);
+
         if (emp != emphasis::none) {
             ImGui::PopStyleColor(3);
         }
@@ -1178,6 +1181,10 @@ namespace grey::widgets {
         return ImGui::IsItemFocused();
     }
 
+    float frame_delta() {
+        return ImGui::GetIO().DeltaTime;
+    }
+
     void mouse_cursor(mouse_cursor_type mct) {
         ImGui::SetMouseCursor((ImGuiMouseCursor_)mct);
     }

grey/widgets.h

@@ -523,6 +523,12 @@ namespace grey::widgets {
 
     bool hyperlink(const std::string& text, const std::string& url_to_open = "");
 
+    /**
+     * @brief Colour picker
+     * @param label 
+     * @param colour 
+     * @return 
+     */
     bool colour(const std::string& label, unsigned int& colour);
 
     /**
@@ -589,6 +595,11 @@ namespace grey::widgets {
 
     bool is_focused();
 
+    /**
+     * @brief Time passed since last frame in seconds, most likely fractional.
+     */
+    float frame_delta();
+
     enum class mouse_cursor_type {
         none = -1,
         arrow = 0,