Render XDG shell surfaces

4 files changed, 98 insertions, 10 deletions

diff --git a/rootston/desktop.c b/rootston/desktop.c
index 86d128ef..fc341a23 100644
--- a/rootston/desktop.c
+++ b/rootston/desktop.c
@@ -11,14 +11,9 @@
 #include "rootston/desktop.h"
 #include "rootston/server.h"
 
-static void handle_xdg_shell_v6_surface(struct wl_listener *listener,
-		void *data) {
-	struct roots_desktop *desktop =
-		wl_container_of(listener, desktop, xdg_shell_v6_surface);
-	struct wlr_xdg_surface_v6 *surface = data;
-	wlr_log(L_DEBUG, "new xdg surface: title=%s, app_id=%s",
-		surface->title, surface->app_id);
-	wlr_xdg_surface_v6_ping(surface);
+void view_destroy(struct roots_view *view) {
+	wl_list_remove(&view->link);
+	free(view);
 }
 
 struct roots_desktop *desktop_create(struct roots_server *server,
@@ -26,6 +21,7 @@ struct roots_desktop *desktop_create(struct roots_server *server,
 	struct roots_desktop *desktop = calloc(1, sizeof(struct roots_desktop));
 	wlr_log(L_DEBUG, "Initializing roots desktop");
 
+	wl_list_init(&desktop->views);
 	wl_list_init(&desktop->outputs);
 	wl_list_init(&desktop->output_add.link);
 	desktop->output_add.notify = output_add_notify;
diff --git a/rootston/meson.build b/rootston/meson.build
index 6fc4452f..03ca837a 100644
--- a/rootston/meson.build
+++ b/rootston/meson.build
@@ -6,6 +6,7 @@ executable(
 		'input.c',
 		'main.c',
 		'output.c',
-		'pointer.c'
+		'pointer.c',
+		'xdg_shell_v6.c'
 	], dependencies: wlroots
 )
diff --git a/rootston/output.c b/rootston/output.c
index 39586e0e..481832cf 100644
--- a/rootston/output.c
+++ b/rootston/output.c
@@ -1,15 +1,43 @@
 #define _POSIX_C_SOURCE 199309L
 #include <time.h>
 #include <stdlib.h>
+#include <stdbool.h>
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_wl_shell.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/render/matrix.h>
 #include <wlr/util/log.h>
 #include "rootston/server.h"
 #include "rootston/desktop.h"
 #include "rootston/config.h"
 
+static inline int64_t timespec_to_msec(const struct timespec *a) {
+	return (int64_t)a->tv_sec * 1000 + a->tv_nsec / 1000000;
+}
+
+static void render_view(struct roots_desktop *desktop,
+		struct wlr_output *wlr_output, struct timespec *when,
+		struct roots_view *view, double ox, double oy) {
+	struct wlr_surface *surface = view->wlr_surface;
+	float matrix[16];
+	float transform[16];
+	wlr_surface_flush_damage(surface);
+	if (surface->texture->valid) {
+		wlr_matrix_translate(&transform, ox, oy, 0);
+		wlr_surface_get_matrix(surface, &matrix,
+			&wlr_output->transform_matrix, &transform);
+		wlr_render_with_matrix(desktop->server->renderer,
+				surface->texture, &matrix);
+
+		struct wlr_frame_callback *cb, *cnext;
+		wl_list_for_each_safe(cb, cnext, &surface->frame_callback_list, link) {
+			wl_callback_send_done(cb->resource, timespec_to_msec(when));
+			wl_resource_destroy(cb->resource);
+		}
+	}
+}
+
 static void output_frame_notify(struct wl_listener *listener, void *data) {
 	struct wlr_output *wlr_output = data;
 	struct roots_output *output = wl_container_of(listener, output, frame);
@@ -22,7 +50,19 @@ static void output_frame_notify(struct wl_listener *listener, void *data) {
 	wlr_output_make_current(wlr_output);
 	wlr_renderer_begin(server->renderer, wlr_output);
 
-	// TODO: render views
+	struct roots_view *view;
+	wl_list_for_each(view, &desktop->views, link) {
+		int width = view->wlr_surface->current.buffer_width;
+		int height = view->wlr_surface->current.buffer_height;
+
+		if (wlr_output_layout_intersects(desktop->layout, wlr_output,
+					view->x, view->y, view->x + width, view->y + height)) {
+			double ox = view->x, oy = view->y;
+			wlr_output_layout_output_coords(
+					desktop->layout, wlr_output, &ox, &oy);
+			render_view(desktop, wlr_output, &now, view, ox, oy);
+		}
+	}
 
 	wlr_renderer_end(server->renderer);
 	wlr_output_swap_buffers(wlr_output);
diff --git a/rootston/xdg_shell_v6.c b/rootston/xdg_shell_v6.c
new file mode 100644
index 00000000..6c2bff55
--- /dev/null
+++ b/rootston/xdg_shell_v6.c
@@ -0,0 +1,51 @@
+#include <stdlib.h>
+#include <wayland-server.h>
+#include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/types/wlr_surface.h>
+#include <wlr/util/log.h>
+#include "rootston/desktop.h"
+#include "rootston/server.h"
+
+static void handle_destroy(struct wl_listener *listener, void *data) {
+	struct roots_xdg_surface_v6 *roots_xdg_surface =
+		wl_container_of(listener, roots_xdg_surface, destroy);
+	wl_list_remove(&roots_xdg_surface->destroy.link);
+	wl_list_remove(&roots_xdg_surface->ping_timeout.link);
+	wl_list_remove(&roots_xdg_surface->request_move.link);
+	wl_list_remove(&roots_xdg_surface->request_resize.link);
+	wl_list_remove(&roots_xdg_surface->request_show_window_menu.link);
+	wl_list_remove(&roots_xdg_surface->request_minimize.link);
+	view_destroy(roots_xdg_surface->view);
+	free(roots_xdg_surface);
+}
+
+void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
+	struct roots_desktop *desktop =
+		wl_container_of(listener, desktop, xdg_shell_v6_surface);
+
+	struct wlr_xdg_surface_v6 *surface = data;
+	wlr_log(L_DEBUG, "new xdg surface: title=%s, app_id=%s",
+		surface->title, surface->app_id);
+	wlr_xdg_surface_v6_ping(surface);
+
+	struct roots_xdg_surface_v6 *roots_surface =
+		calloc(1, sizeof(struct roots_xdg_surface_v6));
+	// TODO: all of the trimmings
+	wl_list_init(&roots_surface->destroy.link);
+	roots_surface->destroy.notify = handle_destroy;
+	wl_signal_add(&surface->events.destroy, &roots_surface->destroy);
+	wl_list_init(&roots_surface->ping_timeout.link);
+	wl_list_init(&roots_surface->request_minimize.link);
+	wl_list_init(&roots_surface->request_move.link);
+	wl_list_init(&roots_surface->request_resize.link);
+	wl_list_init(&roots_surface->request_show_window_menu.link);
+
+	struct roots_view *view = calloc(1, sizeof(struct roots_view));
+	view->type = ROOTS_XDG_SHELL_V6_VIEW;
+	view->x = view->y = 200;
+	view->xdg_surface_v6 = surface;
+	view->roots_xdg_surface_v6 = roots_surface;
+	view->wlr_surface = surface->surface;
+	roots_surface->view = view;
+	wl_list_insert(&desktop->views, &view->link);
+}