sokol: add mouse cursor support (#15111)

vlib/sokol/sapp/enums.v

@@ -36,6 +36,20 @@ pub enum MouseButton {
 	middle = 2
 }
 
+pub enum MouseCursor {
+	default = C.SAPP_MOUSECURSOR_DEFAULT
+	arrow = C.SAPP_MOUSECURSOR_ARROW
+	ibeam = C.SAPP_MOUSECURSOR_IBEAM
+	crosshair = C.SAPP_MOUSECURSOR_CROSSHAIR
+	pointing_hand = C.SAPP_MOUSECURSOR_POINTING_HAND
+	resize_ew = C.SAPP_MOUSECURSOR_RESIZE_EW
+	resize_ns = C.SAPP_MOUSECURSOR_RESIZE_NS
+	resize_nwse = C.SAPP_MOUSECURSOR_RESIZE_NWSE
+	resize_nesw = C.SAPP_MOUSECURSOR_RESIZE_NESW
+	resize_all = C.SAPP_MOUSECURSOR_RESIZE_ALL
+	not_allowed = C.SAPP_MOUSECURSOR_NOT_ALLOWED
+}
+
 pub enum Modifier {
 	shift = 1 //(1<<0)
 	ctrl = 2 //(1<<1)

vlib/sokol/sapp/sapp.c.v

@@ -97,6 +97,12 @@ pub fn show_mouse(visible bool) {
 	C.sapp_show_mouse(visible)
 }
 
+// set mouse cursor
+[inline]
+pub fn set_mouse_cursor(cursor MouseCursor) {
+	C.sapp_set_mouse_cursor(cursor)
+}
+
 // show or hide the mouse cursor
 [inline]
 pub fn mouse_shown() bool {

vlib/sokol/sapp/sapp_funcs.c.v

@@ -44,6 +44,9 @@ fn C.sapp_show_mouse(visible bool)
 // return true if the mouse cursor is shown
 fn C.sapp_mouse_shown() bool
 
+// set mouse cursor
+fn C.sapp_set_mouse_cursor(cursor MouseCursor)
+
 // lock or unlock the mouse cursor
 fn C.sapp_lock_mouse(locked bool)
 

vlib/sokol/sapp/sapp_structs.c.v

@@ -54,7 +54,6 @@ pub:
 	fullscreen                   bool  // whether the window should be created in fullscreen mode
 	alpha                        bool  // whether the framebuffer should have an alpha channel (ignored on some platforms)
 	window_title                 &char // the window title as UTF-8 encoded string
-	user_cursor                  bool  // if true, user is expected to manage cursor image in SAPP_EVENTTYPE_UPDATE_CURSOR
 	enable_clipboard             bool  // enable clipboard access, default is false
 	clipboard_size               int   // max size of clipboard content in bytes
 	enable_dragndrop             bool  // enable file dropping (drag'n'drop), default is false