Add first wlr_surface example implementation

5 files changed, 155 insertions, 90 deletions

diff --git a/examples/compositor/main.c b/examples/compositor/main.c
index 6afdb391..01292f51 100644
--- a/examples/compositor/main.c
+++ b/examples/compositor/main.c
@@ -14,6 +14,7 @@
 #include <wlr/util/log.h>
 #include "shared.h"
 #include "compositor.h"
+#include "wlr_surface.h"
 
 struct sample_state {
 	struct wlr_renderer *renderer;
@@ -32,11 +33,11 @@ void handle_output_frame(struct output_state *output, struct timespec *ts) {
 	struct wl_resource *_res;
 	float matrix[16];
 	wl_list_for_each(_res, &sample->compositor.surfaces, link) {
-		struct wlr_texture *texture = wl_resource_get_user_data(_res);
-		if (texture->valid) {
-			wlr_texture_get_matrix(texture, &matrix,
+		struct wlr_surface *surface = wl_resource_get_user_data(_res);
+		if (surface->texture->valid) {
+			wlr_texture_get_matrix(surface->texture, &matrix,
 					&wlr_output->transform_matrix, 200, 200);
-			wlr_render_with_matrix(sample->renderer, texture, &matrix);
+			wlr_render_with_matrix(sample->renderer, surface->texture, &matrix);
 		}
 	}
 
diff --git a/examples/compositor/wl_compositor.c b/examples/compositor/wl_compositor.c
index 03a1aa7e..8c8ee3b6 100644
--- a/examples/compositor/wl_compositor.c
+++ b/examples/compositor/wl_compositor.c
@@ -1,90 +1,13 @@
 #include <assert.h>
+#include <stdlib.h>
 #include <wayland-server.h>
 #include <wlr/util/log.h>
 #include "compositor.h"
-
-static void surface_destroy(struct wl_client *client, struct wl_resource *resource) {
-	wl_resource_destroy(resource);
-}
-
-static void surface_attach(struct wl_client *client,
-		struct wl_resource *resource,
-		struct wl_resource *buffer_resource, int32_t sx, int32_t sy) {
-	struct wlr_texture *texture = wl_resource_get_user_data(resource);
-	struct wl_shm_buffer *buffer = wl_shm_buffer_get(buffer_resource);
-	uint32_t format = wl_shm_buffer_get_format(buffer);
-	wlr_texture_upload_shm(texture, format, buffer);
-}
-
-static void surface_damage(struct wl_client *client,
-		struct wl_resource *resource,
-		int32_t x, int32_t y, int32_t width, int32_t height) {
-	wlr_log(L_DEBUG, "TODO: surface damage");
-}
-
-static void surface_frame(struct wl_client *client,
-		struct wl_resource *resource, uint32_t callback) {
-	wlr_log(L_DEBUG, "TODO: surface frame");
-}
-
-static void surface_set_opaque_region(struct wl_client *client,
-		struct wl_resource *resource,
-		struct wl_resource *region_resource) {
-	wlr_log(L_DEBUG, "TODO: surface opaque region");
-}
-
-static void surface_set_input_region(struct wl_client *client,
-		struct wl_resource *resource,
-		struct wl_resource *region_resource) {
-
-	wlr_log(L_DEBUG, "TODO: surface input region");
-}
-
-static void surface_commit(struct wl_client *client,
-		struct wl_resource *resource) {
-	wlr_log(L_DEBUG, "TODO: surface surface commit");
-}
-
-static void surface_set_buffer_transform(struct wl_client *client,
-		struct wl_resource *resource, int transform) {
-	wlr_log(L_DEBUG, "TODO: surface surface buffer transform");
-}
-
-static void surface_set_buffer_scale(struct wl_client *client,
-		struct wl_resource *resource,
-		int32_t scale) {
-	wlr_log(L_DEBUG, "TODO: surface set buffer scale");
-}
-
-
-static void surface_damage_buffer(struct wl_client *client,
-		struct wl_resource *resource,
-		int32_t x, int32_t y, int32_t width,
-		int32_t height) {
-	wlr_log(L_DEBUG, "TODO: surface damage buffer");
-}
-
-struct wl_surface_interface surface_interface = {
-	surface_destroy,
-	surface_attach,
-	surface_damage,
-	surface_frame,
-	surface_set_opaque_region,
-	surface_set_input_region,
-	surface_commit,
-	surface_set_buffer_transform,
-	surface_set_buffer_scale,
-	surface_damage_buffer
-};
-
-static void destroy_surface(struct wl_resource *resource) {
-	struct wlr_texture *surface = wl_resource_get_user_data(resource);
-	wlr_texture_destroy(surface);
-}
+#include "compositor/wlr_surface.h"
 
 static void destroy_surface_listener(struct wl_listener *listener, void *data) {
 	struct wl_compositor_state *state;
-	struct wlr_texture *surface = data;
+	struct wlr_surface *surface = data;
 	state = wl_container_of(listener, state, destroy_surface_listener);
 
 	struct wl_resource *res = NULL;
@@ -101,13 +24,9 @@ static void wl_compositor_create_surface(struct wl_client *client,
 	struct wl_compositor_state *state = wl_resource_get_user_data(resource);
 	struct wl_resource *surface_resource = wl_resource_create(client,
 			&wl_surface_interface, wl_resource_get_version(resource), id);
-	struct wlr_texture *texture = wlr_render_texture_init(state->renderer);
-	texture->resource = surface_resource;
-	wl_resource_set_implementation(surface_resource, &surface_interface,
-			texture, destroy_surface);
-	wl_resource_set_user_data(surface_resource, texture);
+	struct wlr_surface *surface = wlr_surface_create(surface_resource, state->renderer);
 	wl_list_insert(&state->surfaces, wl_resource_get_link(surface_resource));
-	wl_signal_add(&texture->destroy_signal, &state->destroy_surface_listener);
+	wl_signal_add(&surface->signals.destroy, &state->destroy_surface_listener);
 }
 
 static void wl_compositor_create_region(struct wl_client *client,
diff --git a/examples/compositor/wlr_surface.c b/examples/compositor/wlr_surface.c
new file mode 100644
index 00000000..5a5c3e0d
--- /dev/null
+++ b/examples/compositor/wlr_surface.c
@@ -0,0 +1,120 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <wayland-server.h>
+#include <wlr/util/log.h>
+#include <wlr/render/interface.h>
+#include "wlr_surface.h"
+
+static void surface_destroy(struct wl_client *client, struct wl_resource *resource) {
+	struct wlr_surface *surface = wl_resource_get_user_data(resource);
+	wl_signal_emit(&surface->signals.destroy, surface);
+	wl_resource_destroy(resource);
+}
+
+static void surface_attach(struct wl_client *client,
+		struct wl_resource *resource,
+		struct wl_resource *buffer, int32_t sx, int32_t sy) {
+	struct wlr_surface *surface = wl_resource_get_user_data(resource);
+	surface->pending_buffer = buffer;
+	surface->pending_attached = true;
+}
+
+static void surface_damage(struct wl_client *client,
+		struct wl_resource *resource,
+		int32_t x, int32_t y, int32_t width, int32_t height) {
+	wlr_log(L_DEBUG, "TODO: surface damage");
+}
+
+static void surface_frame(struct wl_client *client,
+		struct wl_resource *resource, uint32_t callback) {
+	wlr_log(L_DEBUG, "TODO: surface frame");
+}
+
+static void surface_set_opaque_region(struct wl_client *client,
+		struct wl_resource *resource,
+		struct wl_resource *region_resource) {
+	wlr_log(L_DEBUG, "TODO: surface opaque region");
+}
+
+static void surface_set_input_region(struct wl_client *client,
+		struct wl_resource *resource,
+		struct wl_resource *region_resource) {
+
+	wlr_log(L_DEBUG, "TODO: surface input region");
+}
+
+static void surface_commit(struct wl_client *client,
+		struct wl_resource *resource) {
+	struct wlr_surface *surface = wl_resource_get_user_data(resource);
+
+	// apply pending state
+	if (surface->pending_attached) {
+		surface->attached = surface->pending_buffer;
+		if (surface->pending_buffer) {
+			struct wl_shm_buffer *buffer = wl_shm_buffer_get(surface->pending_buffer);
+			if (!buffer) {
+				wlr_log(L_INFO, "Unknown buffer handle attached");
+			} else {
+				uint32_t format = wl_shm_buffer_get_format(buffer);
+				wlr_texture_upload_shm(surface->texture, format, buffer);
+			}
+		}
+	}
+
+	// reset pending state
+	surface->pending_buffer = NULL;
+	surface->pending_attached = false;
+
+	wl_signal_emit(&surface->signals.commit, surface);
+}
+
+static void surface_set_buffer_transform(struct wl_client *client,
+		struct wl_resource *resource, int transform) {
+	wlr_log(L_DEBUG, "TODO: surface surface buffer transform");
+}
+
+static void surface_set_buffer_scale(struct wl_client *client,
+		struct wl_resource *resource,
+		int32_t scale) {
+	wlr_log(L_DEBUG, "TODO: surface set buffer scale");
+}
+
+
+static void surface_damage_buffer(struct wl_client *client,
+		struct wl_resource *resource,
+		int32_t x, int32_t y, int32_t width,
+		int32_t height) {
+	wlr_log(L_DEBUG, "TODO: surface damage buffer");
+}
+
+const struct wl_surface_interface surface_interface = {
+	surface_destroy,
+	surface_attach,
+	surface_damage,
+	surface_frame,
+	surface_set_opaque_region,
+	surface_set_input_region,
+	surface_commit,
+	surface_set_buffer_transform,
+	surface_set_buffer_scale,
+	surface_damage_buffer
+};
+
+static void destroy_surface(struct wl_resource *resource) {
+	struct wlr_surface *surface = wl_resource_get_user_data(resource);
+	wl_signal_emit(&surface->signals.destroy, surface);
+	wlr_texture_destroy(surface->texture);
+}
+
+struct wlr_surface *wlr_surface_create(struct wl_resource *res,
+		struct wlr_renderer *renderer) {
+	struct wlr_surface *surface = calloc(1, sizeof(struct wlr_surface));
+	surface->texture = wlr_render_texture_init(renderer);
+	surface->resource = res;
+	wl_signal_init(&surface->signals.commit);
+	wl_signal_init(&surface->signals.destroy);
+	wl_resource_set_implementation(res, &surface_interface,
+			surface, destroy_surface);
+
+	return surface;
+}
diff --git a/examples/compositor/wlr_surface.h b/examples/compositor/wlr_surface.h
new file mode 100644
index 00000000..d294bdef
--- /dev/null
+++ b/examples/compositor/wlr_surface.h
@@ -0,0 +1,24 @@
+#ifndef _EXAMPLES_COMPOSITOR_SURFACE_H
+#define _EXAMPLES_COMPOSITOR_SURFACE_H
+
+#include <wayland-server.h>
+
+struct wlr_surface {
+	struct wl_resource *pending_buffer;
+	bool pending_attached;
+	bool attached; // whether the surface currently has a buffer attached
+
+	struct wlr_texture *texture;
+	const char *role; // the lifetime-bound role or null
+	struct wl_resource *resource;
+
+	struct {
+		struct wl_signal destroy;
+		struct wl_signal commit;
+	} signals;
+};
+
+struct wlr_surface *wlr_surface_create(struct wl_resource *res,
+		struct wlr_renderer *renderer);
+
+#endif
diff --git a/examples/meson.build b/examples/meson.build
index ed49444f..6e52a920 100644
--- a/examples/meson.build
+++ b/examples/meson.build
@@ -12,6 +12,7 @@ compositor_src = [
     'compositor/main.c',
     'compositor/wl_compositor.c',
     'compositor/wl_shell.c',
+    'compositor/wlr_surface.c',
 ]
 
 executable('compositor', compositor_src, dependencies: dep_wlr, link_with: lib_shared)