Dependencies review

Checking some files to be converted to header-only

src/raygui.h

@@ -23,16 +23,55 @@
 #ifndef RAYGUI_H
 #define RAYGUI_H
 
-#include "raylib.h"
+//#include "raylib.h"
 
 //----------------------------------------------------------------------------------
 // Defines and Macros
 //----------------------------------------------------------------------------------
-#define NUM_PROPERTIES  98
+#define NUM_PROPERTIES       98
+
+#define BLANK              (Color){ 0, 0, 0, 0 }           // Blank (Transparent)
+
+#define KEY_LEFT            263
+#define KEY_RIGHT           262
+
+#define MOUSE_LEFT_BUTTON     0
+
 
 //----------------------------------------------------------------------------------
 // Types and Structures Definition
+// NOTE: Some types are required for RAYGUI_STANDALONE usage
 //----------------------------------------------------------------------------------
+#ifndef __cplusplus
+// Boolean type
+    #ifndef true
+        typedef enum { false, true } bool;
+    #endif
+#endif
+
+// Vector2 type
+typedef struct Vector2 {
+    float x;
+    float y;
+} Vector2;
+
+// Color type, RGBA (32bit)
+typedef struct Color {
+    unsigned char r;
+    unsigned char g;
+    unsigned char b;
+    unsigned char a;
+} Color;
+
+// Rectangle type
+typedef struct Rectangle {
+    int x;
+    int y;
+    int width;
+    int height;
+} Rectangle;
+
+// Gui properties enumeration
 typedef enum GuiProperty {
     GLOBAL_BASE_COLOR = 0,
     GLOBAL_BORDER_COLOR,