From 8ad26c8afd2aed460ea70088b0aa98f65bf21de7 Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Sun, 25 Feb 2018 17:23:36 -0500
Subject: Send surface enter/leave events

---
 sway/tree/view.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

(limited to 'sway/tree/view.c')

diff --git a/sway/tree/view.c b/sway/tree/view.c
index b46c3b17..9499adca 100644
--- a/sway/tree/view.c
+++ b/sway/tree/view.c
@@ -1,3 +1,7 @@
+#include <wayland-server.h>
+#include <wlr/types/wlr_output_layout.h>
+#include "sway/container.h"
+#include "sway/layout.h"
 #include "sway/view.h"
 
 const char *view_get_title(struct sway_view *view) {
@@ -30,13 +34,27 @@ const char *view_get_instance(struct sway_view *view) {
 
 void view_set_size(struct sway_view *view, int width, int height) {
 	if (view->iface.set_size) {
+		struct wlr_box box = {
+			.x = view->swayc->x,
+			.y = view->swayc->y,
+			.width = view->width,
+			.height = view->height,
+		};
 		view->iface.set_size(view, width, height);
+		view_update_outputs(view, &box);
 	}
 }
 
 void view_set_position(struct sway_view *view, double ox, double oy) {
 	if (view->iface.set_position) {
+		struct wlr_box box = {
+			.x = view->swayc->x,
+			.y = view->swayc->y,
+			.width = view->width,
+			.height = view->height,
+		};
 		view->iface.set_position(view, ox, oy);
+		view_update_outputs(view, &box);
 	}
 }
 
@@ -51,3 +69,27 @@ void view_close(struct sway_view *view) {
 		view->iface.close(view);
 	}
 }
+
+void view_update_outputs(struct sway_view *view, const struct wlr_box *before) {
+	struct wlr_output_layout *output_layout =
+		root_container.sway_root->output_layout;
+	struct wlr_box box = {
+		.x = view->swayc->x,
+		.y = view->swayc->y,
+		.width = view->width,
+		.height = view->height,
+	};
+	struct wlr_output_layout_output *layout_output;
+	wl_list_for_each(layout_output, &output_layout->outputs, link) {
+		bool intersected = before != NULL && wlr_output_layout_intersects(
+			output_layout, layout_output->output, before);
+		bool intersects = wlr_output_layout_intersects(output_layout,
+			layout_output->output, &box);
+		if (intersected && !intersects) {
+			wlr_surface_send_leave(view->surface, layout_output->output);
+		}
+		if (!intersected && intersects) {
+			wlr_surface_send_enter(view->surface, layout_output->output);
+		}
+	}
+}
-- 
cgit v1.2.3-54-g00ecf