add 'cursor' ui property

src/graphics/core/commons.cpp

@@ -0,0 +1,39 @@
+#include "commons.hpp"
+
+#include <map>
+
+std::optional<CursorShape> CursorShape_from(std::string_view name) {
+    static std::map<std::string_view, CursorShape> shapes = {
+        {"arrow", CursorShape::ARROW},
+        {"text", CursorShape::TEXT},
+        {"crosshair", CursorShape::CROSSHAIR},
+        {"pointer", CursorShape::POINTER},
+        {"ew-resize", CursorShape::EW_RESIZE},
+        {"ns-resize", CursorShape::NS_RESIZE},
+        {"nwse-resize", CursorShape::NWSE_RESIZE},
+        {"nesw-resize", CursorShape::NESW_RESIZE},
+        {"all-resize", CursorShape::ALL_RESIZE},
+        {"not-allowed", CursorShape::NOT_ALLOWED}
+    };
+    const auto& found = shapes.find(name);
+    if (found == shapes.end()) {
+        return std::nullopt;
+    }
+    return found->second;
+}
+
+std::string to_string(CursorShape shape) {
+    static std::string names[] = {
+        "arrow",
+        "text",
+        "crosshair",
+        "pointer",
+        "ew-resize",
+        "ns-resize",
+        "nwse-resize",
+        "nesw-resize",
+        "all-resize",
+        "not-allowed"
+    };
+    return names[static_cast<int>(shape)];
+}

src/graphics/core/commons.hpp

@@ -1,5 +1,8 @@
 #pragma once
 
+#include <string>
+#include <optional>
+
 enum class DrawPrimitive {
     point = 0,
     line,
@@ -7,9 +10,47 @@ enum class DrawPrimitive {
 };
 
 enum class BlendMode {
-    normal, addition, inversion
+    /// @brief Normal blending mode.
+    normal, 
+    /// @brief Additive blending mode.
+    addition, 
+    /// @brief Subtractive blending mode.
+    inversion
 };
 
+/// @brief Standard GLFW 3.4 cursor shapes (same order and count as in GLFW).
+/// It also works in GLFW 3.3 (unsupported shapes will be replaced with the arrow).
+enum class CursorShape {
+    /// @brief Regular arrow
+    ARROW,
+    /// @brief Text input I-beam
+    TEXT,
+    /// @brief Crosshair 
+    CROSSHAIR,
+    /// @brief Pointing hand
+    POINTER,
+    /// @brief Horizontal resize arrow
+    EW_RESIZE,
+    /// @brief Vertical resize arrow
+    NS_RESIZE,
+    
+    // GLFW 3.4+ cursor shapes
+    
+    /// @brief Diagonal resize arrow (top-left to bottom-right)
+    NWSE_RESIZE,
+    /// @brief Diagonal resize arrow (top-right to bottom-left)
+    NESW_RESIZE,
+    /// @brief All-direction resize arrow
+    ALL_RESIZE,
+    /// @brief Operation not allowed
+    NOT_ALLOWED,
+    
+    LAST=NOT_ALLOWED
+};
+
+std::optional<CursorShape> CursorShape_from(std::string_view name);
+std::string to_string(CursorShape shape);
+
 class Flushable {
 public:
     virtual ~Flushable() = default;