handle gamma-control-v1 set_gamma event

References: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4046

1 files changed, 21 insertions, 1 deletions

diff --git a/dwl.c b/dwl.c
index 5edb12c..1c6de4e 100644
--- a/dwl.c
+++ b/dwl.c
@@ -298,6 +298,7 @@ static void run(char *startup_cmd);
 static void setcursor(struct wl_listener *listener, void *data);
 static void setfloating(Client *c, int floating);
 static void setfullscreen(Client *c, int fullscreen);
+static void setgamma(struct wl_listener *listener, void *data);
 static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
 static void setmon(Client *c, Monitor *m, uint32_t newtags);
@@ -352,6 +353,7 @@ static struct wlr_idle_inhibit_manager_v1 *idle_inhibit_mgr;
 static struct wlr_input_inhibit_manager *input_inhibit_mgr;
 static struct wlr_layer_shell_v1 *layer_shell;
 static struct wlr_output_manager_v1 *output_mgr;
+static struct wlr_gamma_control_manager_v1 *gamma_control_mgr;
 static struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard_mgr;
 
 static struct wlr_cursor *cursor;
@@ -392,6 +394,7 @@ static struct wl_listener output_mgr_apply = {.notify = outputmgrapply};
 static struct wl_listener output_mgr_test = {.notify = outputmgrtest};
 static struct wl_listener request_activate = {.notify = urgent};
 static struct wl_listener request_cursor = {.notify = setcursor};
+static struct wl_listener request_gamma = {.notify = setgamma};
 static struct wl_listener request_set_psel = {.notify = setpsel};
 static struct wl_listener request_set_sel = {.notify = setsel};
 static struct wl_listener request_start_drag = {.notify = requeststartdrag};
@@ -2068,6 +2071,21 @@ setfullscreen(Client *c, int fullscreen)
 }
 
 void
+setgamma(struct wl_listener *listener, void *data)
+{
+	struct wlr_gamma_control_manager_v1_set_gamma_event *event = data;
+	if (!wlr_gamma_control_v1_apply(event->control, &event->output->pending))
+		return;
+
+	if (!wlr_output_test(event->output)) {
+		wlr_output_rollback(event->output);
+		wlr_gamma_control_v1_send_failed_and_destroy(event->control);
+	}
+
+	wlr_output_schedule_frame(event->output);
+}
+
+void
 setlayout(const Arg *arg)
 {
 	if (!selmon)
@@ -2222,7 +2240,6 @@ setup(void)
 	wlr_screencopy_manager_v1_create(dpy);
 	wlr_data_control_manager_v1_create(dpy);
 	wlr_data_device_manager_create(dpy);
-	wlr_gamma_control_manager_v1_create(dpy);
 	wlr_primary_selection_v1_device_manager_create(dpy);
 	wlr_viewporter_create(dpy);
 	wlr_single_pixel_buffer_manager_v1_create(dpy);
@@ -2233,6 +2250,9 @@ setup(void)
 	activation = wlr_xdg_activation_v1_create(dpy);
 	wl_signal_add(&activation->events.request_activate, &request_activate);
 
+	gamma_control_mgr = wlr_gamma_control_manager_v1_create(dpy);
+	wl_signal_add(&gamma_control_mgr->events.set_gamma, &request_gamma);
+
 	/* Creates an output layout, which a wlroots utility for working with an
 	 * arrangement of screens in a physical layout. */
 	output_layout = wlr_output_layout_create();