From 3bb880bf207b40bc0cddcb9c449a738861e6791b Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Sun, 17 Jul 2016 11:26:38 -0400
Subject: Implement configurable wrapping on bar ws scroll

---
 swaybar/bar.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

(limited to 'swaybar/bar.c')

diff --git a/swaybar/bar.c b/swaybar/bar.c
index 9009e1ff..41538052 100644
--- a/swaybar/bar.c
+++ b/swaybar/bar.c
@@ -96,6 +96,37 @@ static void mouse_button_notify(struct window *window, int x, int y,
 static void mouse_scroll_notify(struct window *window, enum scroll_direction direction) {
 	sway_log(L_DEBUG, "Mouse wheel scrolled %s", direction == SCROLL_UP ? "up" : "down");
 
+	if (!swaybar.config->wrap_scroll) {
+		// Find output this window lives on
+		int i;
+		struct output *output;
+		for (i = 0; i < swaybar.outputs->length; ++i) {
+			output = swaybar.outputs->items[i];
+			if (output->window == window) {
+				break;
+			}
+		}
+		if (!sway_assert(i != swaybar.outputs->length, "Unknown window in scroll event")) {
+			return;
+		}
+		int focused = -1;
+		for (i = 0; i < output->workspaces->length; ++i) {
+			struct workspace *ws = output->workspaces->items[i];
+			if (ws->focused) {
+				focused = i;
+				break;
+			}
+		}
+		if (!sway_assert(focused != -1, "Scroll wheel event received on inactive output")) {
+			return;
+		}
+		if ((focused == 0 && direction == SCROLL_UP) ||
+				(focused == output->workspaces->length - 1 && direction == SCROLL_DOWN)) {
+			// Do not wrap
+			return;
+		}
+	}
+
 	const char *workspace_name = direction == SCROLL_UP ? "prev_on_output" : "next_on_output";
 	ipc_send_workspace_command(workspace_name);
 }
-- 
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