From 066143adef7adc6e76e43e1990db2f75fe984b42 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Tue, 3 Apr 2018 14:31:30 -0400
Subject: Add password buffer, refactor rendering/surfaces

---
 swaylock/password.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 swaylock/password.c

(limited to 'swaylock/password.c')

diff --git a/swaylock/password.c b/swaylock/password.c
new file mode 100644
index 00000000..da67205d
--- /dev/null
+++ b/swaylock/password.c
@@ -0,0 +1,57 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <wlr/util/log.h>
+#include <xkbcommon/xkbcommon.h>
+#include "swaylock/swaylock.h"
+#include "swaylock/seat.h"
+#include "unicode.h"
+
+static void backspace(struct swaylock_password *pw) {
+	if (pw->len != 0) {
+		pw->buffer[--pw->len] = 0;
+	}
+}
+
+static void append_ch(struct swaylock_password *pw, uint32_t codepoint) {
+	if (!pw->buffer) {
+		pw->size = 8;
+		if (!(pw->buffer = malloc(pw->size))) {
+			// TODO: Display error
+			return;
+		}
+		pw->buffer[0] = 0;
+	}
+	size_t utf8_size = utf8_chsize(codepoint);
+	if (pw->len + utf8_size + 1 >= pw->size) {
+		size_t size = pw->size * 2;
+		char *buffer = realloc(pw->buffer, size);
+		if (!buffer) {
+			// TODO: Display error
+			return;
+		}
+		pw->size = size;
+		pw->buffer = buffer;
+	}
+	utf8_encode(&pw->buffer[pw->len], codepoint);
+	pw->buffer[pw->len + utf8_size] = 0;
+	pw->len += utf8_size;
+}
+
+void swaylock_handle_key(struct swaylock_state *state,
+		xkb_keysym_t keysym, uint32_t codepoint) {
+	switch (keysym) {
+		case XKB_KEY_KP_Enter: /* fallthrough */
+		case XKB_KEY_Return:
+			// TODO: Attempt password
+			break;
+		case XKB_KEY_BackSpace:
+			backspace(&state->password);
+			break;
+		default:
+			if (codepoint) {
+				append_ch(&state->password, codepoint);
+			}
+			break;
+	}
+}
-- 
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