clipboard with wl-paste

1 files changed, 80 insertions, 0 deletions

diff --git a/data-device.c b/data-device.c
new file mode 100644
index 0000000..3d04f1e
--- /dev/null
+++ b/data-device.c
@@ -0,0 +1,80 @@
+#include "wayland.h"
+#include <unistd.h>
+
+struct wl_data_device_listener data_device_listener;
+
+void setup_data_device(client_state* state) {
+	state->data_device = wl_data_device_manager_get_data_device(state->data_device_manager, state->seat);
+	wl_data_device_add_listener(state->data_device, &data_device_listener, state);
+}
+
+static void data_offer_handle_offer(void *data, struct wl_data_offer *offer,
+		const char *mime_type) {
+}
+
+static const struct wl_data_offer_listener data_offer_listener = {
+	.offer = data_offer_handle_offer,
+};
+
+static void data_device_handle_data_offer(void *data,
+		struct wl_data_device *data_device, struct wl_data_offer *offer) {
+	// An application has created a new data source
+	wl_data_offer_add_listener(offer, &data_offer_listener, NULL);
+}
+
+static void data_device_handle_selection(void *data,
+		struct wl_data_device *data_device, struct wl_data_offer *offer) {
+
+	client_state *state = data;
+	state->data_offer = offer;
+
+	// free old clipboard
+	free(state->clipboard);
+
+	// no clipboard contents
+	if (offer == NULL) {
+		state->clipboard = "";
+		return;
+	}
+
+	// get contents in fd
+	int fds[2];
+	pipe(fds);
+	wl_data_offer_receive(offer, "text/plain", fds[1]);
+	close(fds[1]);
+	wl_display_roundtrip(state->display);
+
+	// read fd
+	state->clipboard_size = 64;
+	state->clipboard = malloc(state->clipboard_size);
+	size_t current_clip = 0;
+	while (true) {
+		ssize_t n = read(fds[0], state->clipboard + current_clip, state->clipboard_size - current_clip);
+		if (n <= 0) {
+			break;
+		}
+		current_clip += n;
+		if (current_clip == state->clipboard_size) {
+			state->clipboard_size *= 2;
+			state->clipboard = realloc(state->clipboard, state->clipboard_size);
+		}
+	}
+	close(fds[0]);
+
+	state->clipboard_size = current_clip; // we don't need the ACTUAL length of the buffer anymore, just the string :D
+	// remove newlines
+	int i, j;
+    for (i = 0, j = 0; i < state->clipboard_size; i++) {
+        if (state->clipboard[i] != '\n' && state->clipboard[i] != '\r') {
+            state->clipboard[j++] = state->clipboard[i];
+        }
+    }
+	state->clipboard_size = j;
+
+	wl_data_offer_destroy(offer);
+}
+
+struct wl_data_device_listener data_device_listener = {
+	.data_offer = data_device_handle_data_offer,
+	.selection = data_device_handle_selection,
+};