From 0cba06dcef791d8dc1702270cae2915936380a46 Mon Sep 17 00:00:00 2001
From: Tony Crisci <tony@dubstepdish.com>
Date: Thu, 24 Aug 2017 10:42:05 -0400
Subject: implement wlr_cursor_warp

---
 include/wlr/types/wlr_cursor.h | 11 ++++++++-
 types/wlr_cursor.c             | 54 +++++++++++++++++++++++-------------------
 2 files changed, 40 insertions(+), 25 deletions(-)

diff --git a/include/wlr/types/wlr_cursor.h b/include/wlr/types/wlr_cursor.h
index 1ea089ef..380d8a6f 100644
--- a/include/wlr/types/wlr_cursor.h
+++ b/include/wlr/types/wlr_cursor.h
@@ -28,8 +28,17 @@ void wlr_cursor_destroy(struct wlr_cursor *cur);
 
 void wlr_cursor_set_xcursor(struct wlr_cursor *cur, struct wlr_xcursor *xcur);
 
-void wlr_cursor_warp(struct wlr_cursor *cur, double x, double y);
+/**
+ * Warp the cursor to the given x and y in layout coordinates. If x and y are
+ * out of the layout boundaries or constraints, no warp will happen.
+ *
+ * Returns true when the mouse warp was successful.
+ */
+bool wlr_cursor_warp(struct wlr_cursor *cur, double x, double y);
 
+/**
+ * Move the cursor in the direction of the given x and y coordinates.
+ */
 void wlr_cursor_move(struct wlr_cursor *cur, double delta_x, double delta_y);
 
 /**
diff --git a/types/wlr_cursor.c b/types/wlr_cursor.c
index 84224ac9..948ab550 100644
--- a/types/wlr_cursor.c
+++ b/types/wlr_cursor.c
@@ -64,18 +64,11 @@ void wlr_cursor_set_xcursor(struct wlr_cursor *cur, struct wlr_xcursor *xcur) {
 	cur->state->xcursor = xcur;
 }
 
-void wlr_cursor_warp(struct wlr_cursor *cur, double x, double y) {
-}
-
-void wlr_cursor_move(struct wlr_cursor *cur, double delta_x, double delta_y) {
-	//struct wlr_output *current_output;
-	//current_output = wlr_output_layout_output_at(cur->state->layout, cur->x, cur->y);
-
-	// TODO handle no layout
-	assert(cur->state->layout);
+bool wlr_cursor_warp(struct wlr_cursor *cur, double x, double y) {
+	if (!wlr_output_layout_output_at(cur->state->layout, x, y)) {
+		return false;
+	}
 
-	double new_x = cur->x + delta_x;
-	double new_y = cur->y + delta_y;
 	int hotspot_x = 0;
 	int hotspot_y = 0;
 
@@ -85,28 +78,41 @@ void wlr_cursor_move(struct wlr_cursor *cur, double delta_x, double delta_y) {
 		hotspot_y = image->hotspot_y;
 	}
 
-	if (!wlr_output_layout_output_at(cur->state->layout, new_x, new_y)) {
-		int closest_x, closest_y;
-		wlr_output_layout_closest_boundary(cur->state->layout, new_x, new_y,
-			&closest_x, &closest_y);
-		new_x = closest_x;
-		new_y = closest_y;
-	}
 
 	struct wlr_output_layout_output *l_output;
 	wl_list_for_each(l_output, &cur->state->layout->outputs, link) {
-		int output_x = new_x;
-		int output_y = new_y;
+		int output_x = x;
+		int output_y = y;
 
 		// TODO fix double to int rounding issues
 		wlr_output_layout_output_coords(cur->state->layout,
-				l_output->output, &output_x, &output_y);
+			l_output->output, &output_x, &output_y);
 		wlr_output_move_cursor(l_output->output, output_x - hotspot_x,
-				output_y - hotspot_y);
+			output_y - hotspot_y);
+	}
+
+	return true;
+}
+
+void wlr_cursor_move(struct wlr_cursor *cur, double delta_x, double delta_y) {
+	// TODO handle no layout
+	assert(cur->state->layout);
+
+	int x = cur->x + delta_x;
+	int y = cur->y + delta_y;
+
+	if (!wlr_output_layout_output_at(cur->state->layout, x, y)) {
+		int closest_x, closest_y;
+		wlr_output_layout_closest_boundary(cur->state->layout, x, y, &closest_x,
+			&closest_y);
+		x = closest_x;
+		y = closest_y;
 	}
 
-	cur->x = new_x;
-	cur->y = new_y;
+	if (wlr_cursor_warp(cur, x, y)) {
+		cur->x = x;
+		cur->y = y;
+	}
 }
 
 static void handle_pointer_motion(struct wl_listener *listener, void *data) {
-- 
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