Merge pull request #731 from swaywm/layer-surfaces

Implement wlr-layer-shell protocol & rendering

4 files changed, 105 insertions, 4 deletions

diff --git a/include/wlr/render/egl.h b/include/wlr/render/egl.h
index 9f4c0334..b5f2d67c 100644
--- a/include/wlr/render/egl.h
+++ b/include/wlr/render/egl.h
@@ -20,6 +20,7 @@ struct wlr_egl {
 		bool swap_buffers_with_damage;
 		bool dmabuf_import;
 		bool dmabuf_import_modifiers;
+		bool bind_wayland_display;
 	} egl_exts;
 
 	struct wl_display *wl_display;
diff --git a/include/wlr/types/wlr_layer_shell.h b/include/wlr/types/wlr_layer_shell.h
new file mode 100644
index 00000000..8cc7782f
--- /dev/null
+++ b/include/wlr/types/wlr_layer_shell.h
@@ -0,0 +1,100 @@
+#ifndef WLR_TYPES_WLR_LAYER_SHELL_H
+#define WLR_TYPES_WLR_LAYER_SHELL_H
+#include <stdbool.h>
+#include <stdint.h>
+#include <wayland-server.h>
+#include <wlr/types/wlr_box.h>
+#include <wlr/types/wlr_surface.h>
+#include "wlr-layer-shell-unstable-v1-protocol.h"
+
+/**
+ * wlr_layer_shell allows clients to arrange themselves in "layers" on the
+ * desktop in accordance with the wlr-layer-shell protocol. When a client is
+ * added, the new_surface signal will be raised and passed a reference to our
+ * wlr_layer_surface. At this time, the client will have configured the surface
+ * as it desires, including information like desired anchors and margins. The
+ * compositor should use this information to decide how to arrange the layer
+ * on-screen, then determine the dimensions of the layer and call
+ * wlr_layer_surface_configure. The client will then attach a buffer and commit
+ * the surface, at which point the wlr_layer_surface map signal is raised and
+ * the compositor should begin rendering the surface.
+ */
+struct wlr_layer_shell {
+	struct wl_global *wl_global;
+	struct wl_list client_resources; // wl_resource
+
+	struct wl_listener display_destroy;
+
+	struct {
+		struct wl_signal new_surface;
+	} events;
+
+	void *data;
+};
+
+struct wlr_layer_surface_state {
+	uint32_t anchor;
+	int32_t exclusive_zone;
+	struct {
+		uint32_t top, right, bottom, left;
+	} margin;
+	bool keyboard_interactive;
+	uint32_t desired_width, desired_height;
+	uint32_t actual_width, actual_height;
+};
+
+struct wlr_layer_surface_configure {
+	struct wl_list link; // wlr_layer_surface::configure_list
+	uint32_t serial;
+	struct wlr_layer_surface_state state;
+};
+
+struct wlr_layer_surface {
+	struct wlr_surface *surface;
+	struct wlr_output *output;
+	struct wl_resource *resource;
+	struct wlr_layer_shell *shell;
+
+	const char *namespace;
+	enum zwlr_layer_shell_v1_layer layer;
+
+	bool added, configured, mapped, closed;
+	uint32_t configure_serial;
+	struct wl_event_source *configure_idle;
+	uint32_t configure_next_serial;
+	struct wl_list configure_list;
+
+	struct wlr_layer_surface_configure *acked_configure;
+
+	struct wlr_layer_surface_state client_pending;
+	struct wlr_layer_surface_state server_pending;
+	struct wlr_layer_surface_state current;
+
+	struct wl_listener surface_destroy_listener;
+
+	struct {
+		struct wl_signal destroy;
+		struct wl_signal map;
+		struct wl_signal unmap;
+	} events;
+
+	void *data;
+};
+
+struct wlr_layer_shell *wlr_layer_shell_create(struct wl_display *display);
+void wlr_layer_shell_destroy(struct wlr_layer_shell *layer_shell);
+
+/**
+ * Notifies the layer surface to configure itself with this width/height. The
+ * layer_surface will signal its map event when the surface is ready to assume
+ * this size.
+ */
+void wlr_layer_surface_configure(struct wlr_layer_surface *surface,
+		uint32_t width, uint32_t height);
+
+/**
+ * Unmaps this layer surface and notifies the client that it has been closed.
+ */
+void wlr_layer_surface_close(struct wlr_layer_surface *surface);
+
+#endif
diff --git a/include/wlr/types/wlr_xdg_shell.h b/include/wlr/types/wlr_xdg_shell.h
index a5cd3d54..9938f4b1 100644
--- a/include/wlr/types/wlr_xdg_shell.h
+++ b/include/wlr/types/wlr_xdg_shell.h
@@ -78,8 +78,8 @@ struct wlr_xdg_toplevel {
 	struct wlr_xdg_surface *parent;
 	bool added;
 
-	struct wlr_xdg_toplevel_state next; // client protocol requests
-	struct wlr_xdg_toplevel_state pending; // user configure requests
+	struct wlr_xdg_toplevel_state client_pending;
+	struct wlr_xdg_toplevel_state server_pending;
 	struct wlr_xdg_toplevel_state current;
 
 	char *title;
diff --git a/include/wlr/types/wlr_xdg_shell_v6.h b/include/wlr/types/wlr_xdg_shell_v6.h
index c6820f01..0867b2f6 100644
--- a/include/wlr/types/wlr_xdg_shell_v6.h
+++ b/include/wlr/types/wlr_xdg_shell_v6.h
@@ -78,8 +78,8 @@ struct wlr_xdg_toplevel_v6 {
 	struct wlr_xdg_surface_v6 *parent;
 	bool added;
 
-	struct wlr_xdg_toplevel_v6_state next; // client protocol requests
-	struct wlr_xdg_toplevel_v6_state pending; // user configure requests
+	struct wlr_xdg_toplevel_v6_state client_pending;
+	struct wlr_xdg_toplevel_v6_state server_pending;
 	struct wlr_xdg_toplevel_v6_state current;
 
 	char *title;