Add view:csd

include/desktop/desktop.h

@@ -14,6 +14,7 @@
 struct kiwmi_desktop {
     struct wlr_compositor *compositor;
     struct wlr_xdg_shell *xdg_shell;
+    struct wlr_xdg_decoration_manager_v1 *xdg_decoration_manager;
     struct wlr_layer_shell_v1 *layer_shell;
     struct wlr_data_device_manager *data_device_manager;
     struct wlr_output_layout *output_layout;
@@ -21,6 +22,7 @@ struct kiwmi_desktop {
     struct wl_list views;   // struct kiwmi_view::link
 
     struct wl_listener xdg_shell_new_surface;
+    struct wl_listener xdg_toplevel_new_decoration;
     struct wl_listener layer_shell_new_surface;
     struct wl_listener new_output;
 

include/desktop/view.h

@@ -60,6 +60,8 @@ struct kiwmi_view {
         struct wl_signal request_move;
         struct wl_signal request_resize;
     } events;
+
+    struct kiwmi_xdg_decoration *decoration;
 };
 
 struct kiwmi_view_impl {

include/desktop/xdg_shell.h

@@ -10,6 +10,16 @@
 
 #include <wayland-server.h>
 
+struct kiwmi_xdg_decoration {
+    struct kiwmi_view *view;
+    struct wlr_xdg_toplevel_decoration_v1 *wlr_decoration;
+
+    struct wl_listener destroy;
+    struct wl_listener request_mode;
+};
+
 void xdg_shell_new_surface_notify(struct wl_listener *listener, void *data);
+void
+xdg_toplevel_new_decoration_notify(struct wl_listener *listener, void *data);
 
 #endif /* KIWMI_DESKTOP_XDG_SHELL_H */

kiwmi/desktop/desktop.c

@@ -16,6 +16,7 @@
 #include <wlr/types/wlr_export_dmabuf_v1.h>
 #include <wlr/types/wlr_layer_shell_v1.h>
 #include <wlr/types/wlr_output_layout.h>
+#include <wlr/types/wlr_xdg_decoration_v1.h>
 #include <wlr/types/wlr_xdg_output_v1.h>
 #include <wlr/types/wlr_xdg_shell.h>
 
@@ -44,6 +45,14 @@ desktop_init(struct kiwmi_desktop *desktop, struct wlr_renderer *renderer)
         &desktop->xdg_shell->events.new_surface,
         &desktop->xdg_shell_new_surface);
 
+    desktop->xdg_decoration_manager =
+        wlr_xdg_decoration_manager_v1_create(server->wl_display);
+    desktop->xdg_toplevel_new_decoration.notify =
+        xdg_toplevel_new_decoration_notify;
+    wl_signal_add(
+        &desktop->xdg_decoration_manager->events.new_toplevel_decoration,
+        &desktop->xdg_toplevel_new_decoration);
+
     desktop->layer_shell = wlr_layer_shell_v1_create(server->wl_display);
     desktop->layer_shell_new_surface.notify = layer_shell_new_surface_notify;
     wl_signal_add(

kiwmi/desktop/view.c

@@ -229,6 +229,7 @@ view_create(
     view->impl       = impl;
     view->mapped     = false;
     view->hidden     = true;
+    view->decoration = NULL;
 
     view->x = 0;
     view->y = 0;

kiwmi/desktop/xdg_shell.c

@@ -9,6 +9,7 @@
 
 #include <unistd.h>
 
+#include <wlr/types/wlr_xdg_decoration_v1.h>
 #include <wlr/types/wlr_xdg_shell.h>
 #include <wlr/util/edges.h>
 #include <wlr/util/log.h>
@@ -219,6 +220,8 @@ xdg_shell_new_surface_notify(struct wl_listener *listener, void *data)
         return;
     }
 
+    xdg_surface->data = view;
+
     view->xdg_surface = xdg_surface;
     view->wlr_surface = xdg_surface->surface;
 
@@ -244,3 +247,64 @@ xdg_shell_new_surface_notify(struct wl_listener *listener, void *data)
 
     wl_list_insert(&desktop->views, &view->link);
 }
+
+static void
+xdg_decoration_destroy_notify(struct wl_listener *listener, void *UNUSED(data))
+{
+    struct kiwmi_xdg_decoration *decoration =
+        wl_container_of(listener, decoration, destroy);
+
+    decoration->view->decoration = NULL;
+
+    wl_list_remove(&decoration->destroy.link);
+    wl_list_remove(&decoration->request_mode.link);
+
+    free(decoration);
+}
+
+static void
+xdg_decoration_request_mode_notify(
+    struct wl_listener *listener,
+    void *UNUSED(data))
+{
+    struct kiwmi_xdg_decoration *decoration =
+        wl_container_of(listener, decoration, request_mode);
+
+    enum wlr_xdg_toplevel_decoration_v1_mode mode =
+        decoration->wlr_decoration->client_pending_mode;
+    if (mode == WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_NONE) {
+        mode = WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE;
+    }
+
+    wlr_xdg_toplevel_decoration_v1_set_mode(decoration->wlr_decoration, mode);
+}
+
+void
+xdg_toplevel_new_decoration_notify(struct wl_listener *listener, void *data)
+{
+    struct kiwmi_desktop *desktop =
+        wl_container_of(listener, desktop, xdg_toplevel_new_decoration);
+    struct wlr_xdg_toplevel_decoration_v1 *wlr_decoration = data;
+
+    wlr_log(WLR_DEBUG, "New xdg_toplevel decoration");
+
+    struct kiwmi_view *view = wlr_decoration->surface->data;
+
+    struct kiwmi_xdg_decoration *decoration = malloc(sizeof(*decoration));
+    if (!decoration) {
+        wlr_log(WLR_ERROR, "Failed to allocate xdg_decoration");
+        return;
+    }
+
+    view->decoration = decoration;
+
+    decoration->view           = view;
+    decoration->wlr_decoration = wlr_decoration;
+
+    decoration->destroy.notify = xdg_decoration_destroy_notify;
+    wl_signal_add(&wlr_decoration->events.destroy, &decoration->destroy);
+
+    decoration->request_mode.notify = xdg_decoration_request_mode_notify;
+    wl_signal_add(
+        &wlr_decoration->events.request_mode, &decoration->request_mode);
+}

kiwmi/luak/kiwmi_view.c

@@ -11,10 +11,12 @@
 
 #include <lauxlib.h>
 #include <wayland-server.h>
+#include <wlr/types/wlr_xdg_decoration_v1.h>
 #include <wlr/util/edges.h>
 #include <wlr/util/log.h>
 
 #include "desktop/view.h"
+#include "desktop/xdg_shell.h"
 #include "input/seat.h"
 #include "luak/kiwmi_lua_callback.h"
 #include "server.h"
@@ -41,6 +43,30 @@ l_kiwmi_view_close(lua_State *L)
     return 0;
 }
 
+static int
+l_kiwmi_view_csd(lua_State *L)
+{
+    struct kiwmi_view *view =
+        *(struct kiwmi_view **)luaL_checkudata(L, 1, "kiwmi_view");
+    luaL_checktype(L, 2, LUA_TBOOLEAN);
+
+    struct kiwmi_xdg_decoration *decoration = view->decoration;
+    if (!decoration) {
+        return 0;
+    }
+
+    enum wlr_xdg_toplevel_decoration_v1_mode mode;
+    if (lua_toboolean(L, 2)) {
+        mode = WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE;
+    } else {
+        mode = WLR_XDG_TOPLEVEL_DECORATION_V1_MODE_SERVER_SIDE;
+    }
+
+    wlr_xdg_toplevel_decoration_v1_set_mode(decoration->wlr_decoration, mode);
+
+    return 0;
+}
+
 static int
 l_kiwmi_view_focus(lua_State *L)
 {
@@ -282,6 +308,7 @@ l_kiwmi_view_title(lua_State *L)
 static const luaL_Reg kiwmi_view_methods[] = {
     {"app_id", l_kiwmi_view_app_id},
     {"close", l_kiwmi_view_close},
+    {"csd", l_kiwmi_view_csd},
     {"focus", l_kiwmi_view_focus},
     {"hidden", l_kiwmi_view_hidden},
     {"hide", l_kiwmi_view_hide},

lua_docs.md

@@ -209,6 +209,10 @@ This is comparable to the window class of X windows.
 
 Closes the view.
 
+#### view:csd(client_draws)
+
+Set whether the client is supposed to draw their own client decoration.
+
 #### view:focus()
 
 Focuses the view.