1 files changed, 136 insertions, 0 deletions
diff --git a/Sources/Compositor/OwlSubsurface.m b/Sources/Compositor/OwlSubsurface.m
new file mode 100644
index 0000000..924c244
--- /dev/null
+++ b/Sources/Compositor/OwlSubsurface.m
@@ -0,0 +1,136 @@
+/* This file is part of Owl.
+ *
+ * Copyright © 2019-2021 Sergey Bugaev <bugaevc@gmail.com>
+ *
+ * Owl is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 3 of the License,
+ * or (at your option) any later version.
+ *
+ * Owl is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Owl.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "OwlSubsurface.h"
+#import "OwlSurface.h"
+#import "OwlServer.h"
+#import <wayland-server.h>
+
+@implementation OwlSubsurface
+
+static void subsurface_destroy_handler(
+    struct wl_client *client,
+    struct wl_resource *resource
+) {
+    wl_resource_destroy(resource);
+}
+
+static void subsurface_destroy(struct wl_resource *resource) {
+    OwlSubsurface *self = wl_resource_get_user_data(resource);
+    [self unmap];
+    [self->_surface setRole: nil];
+    [self release];
+}
+
+static void subsurface_set_position_handler(
+    struct wl_client *client,
+    struct wl_resource *resource,
+    int32_t x,
+    int32_t y
+) {
+    OwlSubsurface *self = wl_resource_get_user_data(resource);
+    self->_position = NSMakePoint(x, y);
+}
+
+static void subsurface_place_above_handler(
+    struct wl_client *client,
+    struct wl_resource *resource,
+    struct wl_resource *sibling_resource
+) {
+    OwlSubsurface *self = wl_resource_get_user_data(resource);
+    // TODO
+}
+
+static void subsurface_place_below_handler(
+    struct wl_client *client,
+    struct wl_resource *resource,
+    struct wl_resource *sibling_resource
+) {
+    OwlSubsurface *self = wl_resource_get_user_data(resource);
+    // TODO
+}
+
+static void subsurface_set_sync_handler(
+    struct wl_client *client,
+    struct wl_resource *resource
+) {
+    OwlSubsurface *self = wl_resource_get_user_data(resource);
+    // TODO
+}
+
+static void subsurface_set_desync_handler(
+    struct wl_client *client,
+    struct wl_resource *resource
+) {
+    OwlSubsurface *self = wl_resource_get_user_data(resource);
+    // TODO
+}
+
+static const struct wl_subsurface_interface subsurface_impl = {
+    .destroy = subsurface_destroy_handler,
+    .set_position = subsurface_set_position_handler,
+    .place_above = subsurface_place_above_handler,
+    .place_below = subsurface_place_below_handler,
+    .set_sync = subsurface_set_sync_handler,
+    .set_desync = subsurface_set_desync_handler
+};
+
+- (id) initWithResource: (struct wl_resource *) resource
+                surface: (OwlSurface *) surface
+                 parent: (OwlSurface *) parent
+{
+    _resource = resource;
+    _surface = [surface retain];
+    _parent = [parent retain];
+    [surface setRole: self];
+
+    wl_resource_set_implementation(
+        resource,
+        &subsurface_impl,
+        [self retain],
+        subsurface_destroy
+    );
+
+    return self;
+}
+
+- (void) dealloc {
+    [self unmap];
+    [_surface release];
+    [_parent release];
+    [super dealloc];
+}
+
+// FIXME: These are supposed to be applied on parent's next commit.
+- (void) map {
+    [_parent addSubview: _surface];
+    [self update];
+}
+
+- (void) unmap {
+    [_surface removeFromSuperview];
+}
+
+- (void) update {
+    NSPoint origin;
+    origin.x = _position.x;
+    origin.y = [_parent frame].size.height - [_surface frame].size.height - _position.y;
+    [_surface setFrameOrigin: origin];
+}
+
+@end