clipboard with wl-paste

6 files changed, 94 insertions, 16 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,
+};
diff --git a/input_field.c b/input_field.c
index a0d5cc6..6b34b1f 100644
--- a/input_field.c
+++ b/input_field.c
@@ -123,26 +123,14 @@ bool type_key(client_state* state, xkb_keysym_t keysym) {
 
 	// paste
 	if (keysym == XKB_KEY_v && ctrl) {
-		FILE* fp = popen("wl-paste --no-newline --type text/plain 2>/dev/null", "r");
-		if (!fp) return false;
 
-		char* buffer = NULL;
-		size_t size = 0;
-		ssize_t len = getdelim(&buffer, &size, '\0', fp);
-		int status = pclose(fp);
-
-		if (status != 0 || len <= 0) {
-			free(buffer);
-			return false;
-		}
-
-		for (size_t i = 0; i < len; ++i) {
-			array_add(state->input_buffer, buffer[i]);
+		for (size_t i = 0; i < state->clipboard_size; ++i) {
+			array_insert(state->input_buffer, state->cursor_index, state->clipboard[i]);
+			++state->cursor_index;
 		}
 
 		update_text_buffer(state);
 
-		free(buffer);
 		return true;
 	}
 
diff --git a/registry.c b/registry.c
index 13041b8..df41580 100644
--- a/registry.c
+++ b/registry.c
@@ -24,7 +24,7 @@ void global(void *data, struct wl_registry *wl_registry, uint32_t name, const ch
 		state->compositor = wl_registry_bind(wl_registry, name, &wl_compositor_interface, 1);
 	}
 	else if (!strcmp(interface, wl_seat_interface.name)) {
-		state->seat = wl_registry_bind(state->registry, name, &wl_seat_interface, 4);
+		state->seat = wl_registry_bind(wl_registry, name, &wl_seat_interface, 4);
 	}
 	else if (!strcmp(interface, zwlr_layer_shell_v1_interface.name)) {
 		state->layer_shell = wl_registry_bind(wl_registry, name, &zwlr_layer_shell_v1_interface, 5);
@@ -32,6 +32,9 @@ void global(void *data, struct wl_registry *wl_registry, uint32_t name, const ch
 	else if (!strcmp(interface, wp_cursor_shape_manager_v1_interface.name)) {
 		state->cursor_shape_manager = wl_registry_bind( wl_registry, name, &wp_cursor_shape_manager_v1_interface, 1);
 	}
+	else if (!strcmp(interface, wl_data_device_manager_interface.name)) {
+		state->data_device_manager = wl_registry_bind(wl_registry, name, &wl_data_device_manager_interface, 3);
+	}
 	else {
 	}
 
diff --git a/seat.c b/seat.c
index f90935c..fb5ffb1 100644
--- a/seat.c
+++ b/seat.c
@@ -12,6 +12,7 @@ void setup_seat(client_state* state) {
 
 void capabilities(void *data, struct wl_seat *wl_seat, uint32_t capabilities) {
     client_state* state = data;
+	setup_data_device(state);
     if (capabilities & WL_SEAT_CAPABILITY_KEYBOARD && !state->keyboard) {
 		setup_keyboard(state);
     }
diff --git a/state.h b/state.h
index 1c677ec..1225f6a 100644
--- a/state.h
+++ b/state.h
@@ -60,6 +60,9 @@ typedef struct {
     struct zwlr_layer_shell_v1* layer_shell;
     struct zwlr_layer_surface_v1* layer_surface;
     struct wl_seat* seat;
+	struct wl_data_device_manager *data_device_manager;
+	struct wl_data_device *data_device;
+	struct wl_data_offer *data_offer;
     struct wl_keyboard* keyboard;
     struct wl_pointer* pointer;
 	struct wp_cursor_shape_manager_v1* cursor_shape_manager;
@@ -113,6 +116,8 @@ typedef struct {
 
 	// state
     uint32_t width, height;
+	char* clipboard;
+	size_t clipboard_size;
 	char* input_buffer;
 	item_t* items;
 	item_display_t* filtered_items;
diff --git a/wayland.h b/wayland.h
index b6c93a3..635cfcb 100644
--- a/wayland.h
+++ b/wayland.h
@@ -6,6 +6,7 @@
 void setup_registry_and_globals(client_state* state);
 void create_surface(client_state* state);
 void setup_seat(client_state* state);
+void setup_data_device(client_state* state);
 void setup_pointer(client_state* state);
 void setup_keyboard(client_state* state);