1 files changed, 128 insertions, 0 deletions
diff --git a/src/display.c b/src/display.c
new file mode 100644
index 0000000..9010c31
--- /dev/null
+++ b/src/display.c
@@ -0,0 +1,128 @@
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <wayland-client.h>
+
+#include "Xlib-wayland.h"
+
+#include "private.h"
+
+void
+csx_display_bad_alloc(struct csx_display *display)
+{
+	fprintf(stderr, "error bad alloc\n");
+	exit(1);
+}
+
+static void
+shm_format(void *data, struct wl_shm *wl_shm, uint32_t format)
+{
+	struct csx_display *display = data;
+
+	display->shm_formats |= (1 << format);
+}
+
+struct wl_shm_listener shm_listenter = {
+	shm_format
+};
+
+static void
+registry_handle_global(void *data, struct wl_registry *registry,
+		       uint32_t id, const char *interface, uint32_t version)
+{
+	struct csx_display *display = data;
+
+	if (strcmp(interface, "wl_compositor") == 0) {
+		display->compositor =
+			wl_registry_bind(registry,
+					 id, &wl_compositor_interface, 1);
+	} else if (strcmp(interface, "wl_shell") == 0) {
+		display->shell = wl_registry_bind(registry,
+						  id, &wl_shell_interface, 1);
+	} else if (strcmp(interface, "wl_shm") == 0) {
+		display->shm = wl_registry_bind(registry,
+						id, &wl_shm_interface, 1);
+		wl_shm_add_listener(display->shm, &shm_listenter, display);
+	}
+}
+
+static void
+registry_handle_global_remove(void *data, struct wl_registry *registry,
+			      uint32_t name)
+{
+}
+
+static const struct wl_registry_listener registry_listener = {
+	registry_handle_global,
+	registry_handle_global_remove
+};
+
+WL_EXPORT Display *
+XOpenDisplay(const char *display_name)
+{
+	Display *xdisplay;
+	struct csx_display *display;
+
+	xdisplay = malloc(sizeof *xdisplay + sizeof *display);
+	if (!xdisplay)
+		return NULL;
+
+	memset(xdisplay, 0, sizeof *xdisplay);
+	display = xdisplay->csx_display = (void *) (xdisplay + 1);
+	display->display = wl_display_connect(display_name);
+	if (!display->display) {
+		free(display);
+		return NULL;
+	}
+
+	display->registry = wl_display_get_registry(display->display);
+	wl_registry_add_listener(display->registry,
+				 &registry_listener, display);
+	wl_display_roundtrip(display->display);
+	if (display->shm == NULL) {
+		fprintf(stderr, "No wl_shm global\n");
+		exit(1);
+	}
+
+	wl_display_roundtrip(display->display);
+
+	if (display->shm_formats == 0) {
+		fprintf(stderr, "no shm formats available\n");
+		exit(1);
+	}
+
+	csx_display_add_resource(display, NULL); /* None resource */
+	display->root = csx_window_create(display, NULL);
+
+	fprintf(stderr, "root window is id %d\n", display->root->id);
+
+	return xdisplay;
+}
+
+WL_EXPORT int
+XConnectionNumber(Display *display)
+{
+	return wl_display_get_fd(display->csx_display->display);
+}
+
+WL_EXPORT int
+XCloseDisplay(Display *xdisplay)
+{
+	struct csx_display *display = xdisplay->csx_display;
+
+	if (display->shm)
+		wl_shm_destroy(display->shm);
+
+	if (display->shell)
+		wl_shell_destroy(display->shell);
+
+	if (display->compositor)
+		wl_compositor_destroy(display->compositor);
+
+	wl_registry_destroy(display->registry);
+
+	wl_display_disconnect(display->display);
+	free(xdisplay);
+}