From e86fcabce72a1b472e64c1a29df9cfd7391c04d6 Mon Sep 17 00:00:00 2001
From: diggit <patrikbachan@gmail.com>
Date: Sun, 26 Aug 2018 11:26:57 +0200
Subject: [PATCH] fix scrollbar dragging behavior, similar to #688

---
 nuklear.h               | 4 +++-
 src/nuklear_scrollbar.c | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/nuklear.h b/nuklear.h
index c76b033..43a51ad 100644
--- a/nuklear.h
+++ b/nuklear.h
@@ -21180,6 +21180,7 @@ nk_scrollbar_behavior(nk_flags *state, struct nk_input *in,
 {
     nk_flags ws = 0;
     int left_mouse_down;
+    int left_mouse_clicked;
     int left_mouse_click_in_cursor;
     float scroll_delta;
 
@@ -21187,13 +21188,14 @@ nk_scrollbar_behavior(nk_flags *state, struct nk_input *in,
     if (!in) return scroll_offset;
 
     left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down;
+    left_mouse_clicked = in->mouse.buttons[NK_BUTTON_LEFT].clicked;
     left_mouse_click_in_cursor = nk_input_has_mouse_click_down_in_rect(in,
         NK_BUTTON_LEFT, *cursor, nk_true);
     if (nk_input_is_mouse_hovering_rect(in, *scroll))
         *state = NK_WIDGET_STATE_HOVERED;
 
     scroll_delta = (o == NK_VERTICAL) ? in->mouse.scroll_delta.y: in->mouse.scroll_delta.x;
-    if (left_mouse_down && left_mouse_click_in_cursor) {
+    if (left_mouse_down && left_mouse_click_in_cursor && !left_mouse_clicked) {
         /* update cursor by mouse dragging */
         float pixel, delta;
         *state = NK_WIDGET_STATE_ACTIVE;
diff --git a/src/nuklear_scrollbar.c b/src/nuklear_scrollbar.c
index 3a7f179..aad175d 100644
--- a/src/nuklear_scrollbar.c
+++ b/src/nuklear_scrollbar.c
@@ -15,6 +15,7 @@ nk_scrollbar_behavior(nk_flags *state, struct nk_input *in,
 {
     nk_flags ws = 0;
     int left_mouse_down;
+    int left_mouse_clicked;
     int left_mouse_click_in_cursor;
     float scroll_delta;
 
@@ -22,13 +23,14 @@ nk_scrollbar_behavior(nk_flags *state, struct nk_input *in,
     if (!in) return scroll_offset;
 
     left_mouse_down = in->mouse.buttons[NK_BUTTON_LEFT].down;
+    left_mouse_clicked = in->mouse.buttons[NK_BUTTON_LEFT].clicked;
     left_mouse_click_in_cursor = nk_input_has_mouse_click_down_in_rect(in,
         NK_BUTTON_LEFT, *cursor, nk_true);
     if (nk_input_is_mouse_hovering_rect(in, *scroll))
         *state = NK_WIDGET_STATE_HOVERED;
 
     scroll_delta = (o == NK_VERTICAL) ? in->mouse.scroll_delta.y: in->mouse.scroll_delta.x;
-    if (left_mouse_down && left_mouse_click_in_cursor) {
+    if (left_mouse_down && left_mouse_click_in_cursor && !left_mouse_clicked) {
         /* update cursor by mouse dragging */
         float pixel, delta;
         *state = NK_WIDGET_STATE_ACTIVE;