Get rid of [*c] pointers

 src/cursor.zig   | 24 ++++++++++++------------
 src/keyboard.zig |  8 ++++----
 src/output.zig   |  8 +++++---
 src/seat.zig     |  4 ++--
 src/server.zig   |  8 ++++----
 src/view.zig     | 16 ++++++++--------
 6 files changed, 35 insertions(+), 33 deletions(-)

diff --git a/src/cursor.zig b/src/cursor.zig
index 10bd4bc..f5becb7 100644
--- a/src/cursor.zig
+++ b/src/cursor.zig
@@ -218,10 +218,10 @@ pub const Cursor = struct {
         }
     }
 
-    fn handle_motion(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_motion(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is forwarded by the cursor when a pointer emits a _relative_
         // pointer motion event (i.e. a delta)
-        var cursor = @fieldParentPtr(Cursor, "listen_motion", listener);
+        var cursor = @fieldParentPtr(Cursor, "listen_motion", listener.?);
         var event = @ptrCast(
             *c.wlr_event_pointer_motion,
             @alignCast(@alignOf(*c.wlr_event_pointer_motion), data),
@@ -235,14 +235,14 @@ pub const Cursor = struct {
         cursor.process_motion(event.time_msec);
     }
 
-    fn handle_motion_absolute(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_motion_absolute(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is forwarded by the cursor when a pointer emits an _absolute_
         // motion event, from 0..1 on each axis. This happens, for example, when
         // wlroots is running under a Wayland window rather than KMS+DRM, and you
         // move the mouse over the window. You could enter the window from any edge,
         // so we have to warp the mouse there. There is also some hardware which
         // emits these events.
-        var cursor = @fieldParentPtr(Cursor, "listen_motion_absolute", listener);
+        var cursor = @fieldParentPtr(Cursor, "listen_motion_absolute", listener.?);
         var event = @ptrCast(
             *c.wlr_event_pointer_motion_absolute,
             @alignCast(@alignOf(*c.wlr_event_pointer_motion_absolute), data),
@@ -251,10 +251,10 @@ pub const Cursor = struct {
         cursor.process_motion(event.time_msec);
     }
 
-    fn handle_button(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_button(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is forwarded by the cursor when a pointer emits a button
         // event.
-        var cursor = @fieldParentPtr(Cursor, "listen_button", listener);
+        var cursor = @fieldParentPtr(Cursor, "listen_button", listener.?);
         var event = @ptrCast(
             *c.wlr_event_pointer_button,
             @alignCast(@alignOf(*c.wlr_event_pointer_button), data),
@@ -290,10 +290,10 @@ pub const Cursor = struct {
         }
     }
 
-    fn handle_axis(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_axis(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is forwarded by the cursor when a pointer emits an axis event,
         // for example when you move the scroll wheel.
-        var cursor = @fieldParentPtr(Cursor, "listen_axis", listener);
+        var cursor = @fieldParentPtr(Cursor, "listen_axis", listener.?);
         var event = @ptrCast(
             *c.wlr_event_pointer_axis,
             @alignCast(@alignOf(*c.wlr_event_pointer_axis), data),
@@ -310,19 +310,19 @@ pub const Cursor = struct {
         );
     }
 
-    fn handle_frame(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_frame(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is forwarded by the cursor when a pointer emits an frame
         // event. Frame events are sent after regular pointer events to group
         // multiple events together. For instance, two axis events may happen at the
         // same time, in which case a frame event won't be sent in between.
-        var cursor = @fieldParentPtr(Cursor, "listen_frame", listener);
+        var cursor = @fieldParentPtr(Cursor, "listen_frame", listener.?);
         // Notify the client with pointer focus of the frame event.
         c.wlr_seat_pointer_notify_frame(cursor.seat.wlr_seat);
     }
 
-    fn handle_request_set_cursor(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_request_set_cursor(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is rasied by the seat when a client provides a cursor image
-        var cursor = @fieldParentPtr(Cursor, "listen_request_set_cursor", listener);
+        var cursor = @fieldParentPtr(Cursor, "listen_request_set_cursor", listener.?);
         var event = @ptrCast(
             *c.wlr_seat_pointer_request_set_cursor_event,
             @alignCast(@alignOf(*c.wlr_seat_pointer_request_set_cursor_event), data),
diff --git a/src/keyboard.zig b/src/keyboard.zig
index 0077c6e..1a86a02 100644
--- a/src/keyboard.zig
+++ b/src/keyboard.zig
@@ -48,10 +48,10 @@ pub const Keyboard = struct {
         c.wl_signal_add(&keyboard_device.*.events.key, &self.listen_key);
     }
 
-    fn handle_modifiers(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_modifiers(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is raised when a modifier key, such as shift or alt, is
         // pressed. We simply communicate this to the client. */
-        var keyboard = @fieldParentPtr(Keyboard, "listen_modifiers", listener);
+        var keyboard = @fieldParentPtr(Keyboard, "listen_modifiers", listener.?);
 
         // A seat can only have one keyboard, but this is a limitation of the
         // Wayland protocol - not wlroots. We assign all connected keyboards to the
@@ -63,9 +63,9 @@ pub const Keyboard = struct {
         c.wlr_seat_keyboard_notify_modifiers(keyboard.seat.wlr_seat, &keyboard.*.device.*.unnamed_37.keyboard.*.modifiers);
     }
 
-    fn handle_key(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_key(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is raised when a key is pressed or released.
-        const keyboard = @fieldParentPtr(Keyboard, "listen_key", listener);
+        const keyboard = @fieldParentPtr(Keyboard, "listen_key", listener.?);
         const event = @ptrCast(
             *c.wlr_event_keyboard_key,
             @alignCast(@alignOf(*c.wlr_event_keyboard_key), data),
diff --git a/src/output.zig b/src/output.zig
index 9d13334..21cc4c6 100644
--- a/src/output.zig
+++ b/src/output.zig
@@ -52,10 +52,10 @@ pub const Output = struct {
         c.wlr_output_create_global(wlr_output);
     }
 
-    fn handle_frame(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_frame(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This function is called every time an output is ready to display a frame,
         // generally at the output's refresh rate (e.g. 60Hz).
-        var output = @fieldParentPtr(Output, "listen_frame", listener);
+        var output = @fieldParentPtr(Output, "listen_frame", listener.?);
         var renderer = output.server.wlr_renderer;
 
         var now: c.struct_timespec = undefined;
@@ -110,7 +110,9 @@ pub const Output = struct {
         _ = c.wlr_output_commit(output.*.wlr_output);
     }
 
-    fn render_surface(surface: [*c]c.wlr_surface, sx: c_int, sy: c_int, data: ?*c_void) callconv(.C) void {
+    fn render_surface(opt_surface: ?*c.wlr_surface, sx: c_int, sy: c_int, data: ?*c_void) callconv(.C) void {
+        // wlroots says this will never be null
+        var surface = opt_surface.?;
         // This function is called for every surface that needs to be rendered.
         var rdata = @ptrCast(*RenderData, @alignCast(@alignOf(RenderData), data));
         var view = rdata.*.view;
diff --git a/src/seat.zig b/src/seat.zig
index df54684..f589b2f 100644
--- a/src/seat.zig
+++ b/src/seat.zig
@@ -60,9 +60,9 @@ pub const Seat = struct {
         c.wlr_cursor_attach_input_device(self.cursor.wlr_cursor, device);
     }
 
-    fn handle_new_input(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_new_input(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is raised by the backend when a new input device becomes available.
-        var seat = @fieldParentPtr(Seat, "listen_new_input", listener);
+        var seat = @fieldParentPtr(Seat, "listen_new_input", listener.?);
         var device = @ptrCast(*c.wlr_input_device, @alignCast(@alignOf(*c.wlr_input_device), data));
 
         switch (device.*.type) {
diff --git a/src/server.zig b/src/server.zig
index 7cdedff..0703e78 100644
--- a/src/server.zig
+++ b/src/server.zig
@@ -143,8 +143,8 @@ pub const Server = struct {
         return true;
     }
 
-    fn handle_new_output(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
-        var server = @fieldParentPtr(Server, "listen_new_output", listener);
+    fn handle_new_output(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
+        var server = @fieldParentPtr(Server, "listen_new_output", listener.?);
         var wlr_output = @ptrCast(*c.wlr_output, @alignCast(@alignOf(*c.wlr_output), data));
 
         // TODO: Handle failure
@@ -153,10 +153,10 @@ pub const Server = struct {
         server.outputs.append(node);
     }
 
-    fn handle_new_xdg_surface(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_new_xdg_surface(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // This event is raised when wlr_xdg_shell receives a new xdg surface from a
         // client, either a toplevel (application window) or popup.
-        var server = @fieldParentPtr(Server, "listen_new_xdg_surface", listener);
+        var server = @fieldParentPtr(Server, "listen_new_xdg_surface", listener.?);
         var wlr_xdg_surface = @ptrCast(*c.wlr_xdg_surface, @alignCast(@alignOf(*c.wlr_xdg_surface), data));
 
         if (wlr_xdg_surface.role != c.enum_wlr_xdg_surface_role.WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
diff --git a/src/view.zig b/src/view.zig
index 39c9306..e440379 100644
--- a/src/view.zig
+++ b/src/view.zig
@@ -39,20 +39,20 @@ pub const View = struct {
         // c.wl_signal_add(&toplevel.*.events.request_resize, &view.*.request_resize);
     }
 
-    fn handle_map(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    fn handle_map(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
         // Called when the surface is mapped, or ready to display on-screen.
-        var view = @fieldParentPtr(View, "listen_map", listener);
+        var view = @fieldParentPtr(View, "listen_map", listener.?);
         view.mapped = true;
         view.focus(view.wlr_xdg_surface.surface);
     }
 
-    fn handle_unmap(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
-        var view = @fieldParentPtr(View, "listen_unmap", listener);
+    fn handle_unmap(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
+        var view = @fieldParentPtr(View, "listen_unmap", listener.?);
         view.*.mapped = false;
     }
 
-    fn handle_destroy(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
-        var view = @fieldParentPtr(View, "listen_destroy", listener);
+    fn handle_destroy(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
+        var view = @fieldParentPtr(View, "listen_destroy", listener.?);
         var server = view.server;
 
         var it = server.views.first;
@@ -66,11 +66,11 @@ pub const View = struct {
         server.views.destroyNode(target, server.allocator);
     }
 
-    // fn xdg_toplevel_request_move(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    // fn xdg_toplevel_request_move(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
     //     // ignore for now
     // }
 
-    // fn xdg_toplevel_request_resize(listener: [*c]c.wl_listener, data: ?*c_void) callconv(.C) void {
+    // fn xdg_toplevel_request_resize(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
     //     // ignore for now
     // }