Added desktop cursor getter and setter functions (#1407)

* [core] Added desktop cursor getter and setter functions

* Example: Set mouse cursor in text input box

* Setup standard cursors _after_ GLFW window initialization

* Remove old `int GetMouseWheelMove` declaration

4 files changed, 84 insertions, 1 deletions

diff --git a/examples/text/text_input_box.c b/examples/text/text_input_box.c
index 650ca207..b68f762c 100644
--- a/examples/text/text_input_box.c
+++ b/examples/text/text_input_box.c
@@ -43,6 +43,9 @@ int main(void)
 
         if (mouseOnText)
         {
+            // Set the window's cursor to the I-Beam
+            SetMouseCursor(MOUSE_CURSOR_IBEAM);
+
             // Get pressed key (character) on the queue
             int key = GetKeyPressed();
 
@@ -67,6 +70,10 @@ int main(void)
                 if (letterCount < 0) letterCount = 0;
             }
         }
+        else if (GetMouseCursor() != MOUSE_CURSOR_DEFAULT)
+        {
+            SetMouseCursor(MOUSE_CURSOR_DEFAULT);
+        }
 
         if (mouseOnText) framesCounter++;
         else framesCounter = 0;
diff --git a/projects/Notepad++/raylib_npp_parser/raylib_to_parse.h b/projects/Notepad++/raylib_npp_parser/raylib_to_parse.h
index 7ef12f93..a03d5b8f 100644
--- a/projects/Notepad++/raylib_npp_parser/raylib_to_parse.h
+++ b/projects/Notepad++/raylib_npp_parser/raylib_to_parse.h
@@ -148,6 +148,8 @@ RLAPI void SetMousePosition(int x, int y);                    // Set mouse posit
 RLAPI void SetMouseOffset(int offsetX, int offsetY);          // Set mouse offset
 RLAPI void SetMouseScale(float scaleX, float scaleY);         // Set mouse scaling
 RLAPI float GetMouseWheelMove(void);                          // Returns mouse wheel movement Y
+RLAPI MouseCursor GetMouseCursor(void);                       // Returns mouse cursor
+RLAPI void SetMouseCursor(MouseCursor cursor);                // Set mouse cursor
 
 // Input-related functions: touch
 RLAPI int GetTouchX(void);                                    // Returns touch position X for touch point 0 (relative to screen size)
diff --git a/src/core.c b/src/core.c
index f1d7241a..3534caed 100644
--- a/src/core.c
+++ b/src/core.c
@@ -423,6 +423,8 @@ typedef struct CoreData {
             Vector2 offset;                 // Mouse offset
             Vector2 scale;                  // Mouse scaling
 
+            MouseCursor cursor;             // Tracks current mouse cursor
+            void* standardCursors[10];     // Opaque pointers to GLFW cursors
             bool cursorHidden;              // Track if cursor is hidden
             bool cursorOnScreen;            // Tracks if cursor is inside client area
 
@@ -653,8 +655,9 @@ void InitWindow(int width, int height, const char *title)
     // Initialize required global values different than 0
     CORE.Input.Keyboard.exitKey = KEY_ESCAPE;
     CORE.Input.Mouse.scale = (Vector2){ 1.0f, 1.0f };
+    CORE.Input.Mouse.cursor = MOUSE_CURSOR_ARROW;
     CORE.Input.Gamepad.lastButtonPressed = -1;
-
+  
 #if defined(PLATFORM_UWP)
     // The axis count is 6 (2 thumbsticks and left and right trigger)
     CORE.Input.Gamepad.axisCount = 6;
@@ -753,6 +756,26 @@ void InitWindow(int width, int height, const char *title)
 #endif
 #endif
 
+#if defined(PLATFORM_DESKTOP)
+    // Initialize GLFW's standard cursors
+    const int shapes[] = {
+        0x00036001, // MOUSE_CURSOR_ARROW
+        0x00036002, // MOUSE_CURSOR_IBEAM
+        0x00036003, // MOUSE_CURSOR_CROSSHAIR
+        0x00036004, // MOUSE_CURSOR_POINTING_HAND
+        0x00036005, // MOUSE_CURSOR_RESIZE_EW
+        0x00036006, // MOUSE_CURSOR_RESIZE_NS
+        0x00036007, // MOUSE_CURSOR_RESIZE_NWSE
+        0x00036008, // MOUSE_CURSOR_RESIZE_NESW
+        0x00036009, // MOUSE_CURSOR_RESIZE_ALL
+        0x0003600A, // MOUSE_CURSOR_NOT_ALLOWED
+    };
+    for (int i = 0; i < sizeof(CORE.Input.Mouse.standardCursors) / sizeof(CORE.Input.Mouse.standardCursors[0]); i += 1)
+    {
+        CORE.Input.Mouse.standardCursors[i] = glfwCreateStandardCursor(shapes[i]);
+    }
+#endif
+
 #if defined(PLATFORM_WEB)
     // Detect fullscreen change events
     emscripten_set_fullscreenchange_callback("#canvas", NULL, 1, EmscriptenFullscreenChangeCallback);
@@ -797,6 +820,11 @@ void CloseWindow(void)
 
     rlglClose();                // De-init rlgl
 
+#if defined(PLATFORM_DESKTOP)
+    for (int i = 0; i < sizeof(CORE.Input.Mouse.standardCursors) / sizeof(CORE.Input.Mouse.standardCursors[0]); i += 1)
+        glfwDestroyCursor(CORE.Input.Mouse.standardCursors[i]);
+#endif
+
 #if defined(PLATFORM_DESKTOP) || defined(PLATFORM_WEB)
     glfwDestroyWindow(CORE.Window.handle);
     glfwTerminate();
@@ -2733,6 +2761,29 @@ float GetMouseWheelMove(void)
 #endif
 }
 
+// Returns mouse cursor
+MouseCursor GetMouseCursor(void)
+{
+    return CORE.Input.Mouse.cursor;
+}
+
+// Set mouse cursor
+// NOTE: This is a no-op on platforms other than PLATFORM_DESKTOP
+void SetMouseCursor(MouseCursor cursor)
+{
+#if defined(PLATFORM_DESKTOP)
+    CORE.Input.Mouse.cursor = cursor;
+    if (cursor == MOUSE_CURSOR_DEFAULT)
+    {
+        glfwSetCursor(CORE.Window.handle, NULL);
+    }
+    else
+    {
+        glfwSetCursor(CORE.Window.handle, CORE.Input.Mouse.standardCursors[cursor]);
+    }
+#endif
+}
+
 // Returns touch position X for touch point 0 (relative to screen size)
 int GetTouchX(void)
 {
diff --git a/src/raylib.h b/src/raylib.h
index f0eef587..bb5a3c47 100644
--- a/src/raylib.h
+++ b/src/raylib.h
@@ -617,6 +617,27 @@ typedef enum {
     MOUSE_MIDDLE_BUTTON = 2
 } MouseButton;
 
+// Mouse cursor types
+typedef enum {
+    MOUSE_CURSOR_DEFAULT       = -1,
+    MOUSE_CURSOR_ARROW         = 0,
+    MOUSE_CURSOR_IBEAM         = 1,
+    MOUSE_CURSOR_CROSSHAIR     = 2,
+    MOUSE_CURSOR_POINTING_HAND = 3,
+    // The horizontal resize/move arrow shape.
+    MOUSE_CURSOR_RESIZE_EW     = 4,
+    // The vertical resize/move arrow shape.
+    MOUSE_CURSOR_RESIZE_NS     = 5,
+    // The top-left to bottom-right diagonal resize/move arrow shape.
+    MOUSE_CURSOR_RESIZE_NWSE   = 6,
+    // The top-right to bottom-left diagonal resize/move arrow shape.
+    MOUSE_CURSOR_RESIZE_NESW   = 7,
+    // The omni-directional resize/move cursor shape.
+    MOUSE_CURSOR_RESIZE_ALL    = 8,
+    // The operation-not-allowed shape.
+    MOUSE_CURSOR_NOT_ALLOWED   = 9
+} MouseCursor;
+
 // Gamepad number
 typedef enum {
     GAMEPAD_PLAYER1     = 0,
@@ -1016,6 +1037,8 @@ RLAPI void SetMousePosition(int x, int y);                    // Set mouse posit
 RLAPI void SetMouseOffset(int offsetX, int offsetY);          // Set mouse offset
 RLAPI void SetMouseScale(float scaleX, float scaleY);         // Set mouse scaling
 RLAPI float GetMouseWheelMove(void);                          // Returns mouse wheel movement Y
+RLAPI MouseCursor GetMouseCursor(void);                       // Returns mouse cursor
+RLAPI void SetMouseCursor(MouseCursor cursor);                // Set mouse cursor
 
 // Input-related functions: touch
 RLAPI int GetTouchX(void);                                    // Returns touch position X for touch point 0 (relative to screen size)