From 7d2479adc869819d5a435c0a97c7d8d1ef94c51f Mon Sep 17 00:00:00 2001
From: and3md <and3md@gmail.com>
Date: Tue, 22 Aug 2017 18:40:24 +0200
Subject: [PATCH] Second scrollbar bug fix - dlangide 236 ensure
 _pageUp/_pageDown is Visible before layout()

_pageUp/_pageDown has sometime Visibility.Gone and then layout() not work. Maybe this condition should be removed from Widget.layout()
---
 src/dlangui/widgets/scrollbar.d | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/dlangui/widgets/scrollbar.d b/src/dlangui/widgets/scrollbar.d
index 0b02b9f9..e2d3d779 100644
--- a/src/dlangui/widgets/scrollbar.d
+++ b/src/dlangui/widgets/scrollbar.d
@@ -470,16 +470,16 @@ class ScrollBar : AbstractSlider, OnClickHandler {
             if (_scrollArea.top < irc.top) {
                 r = _scrollArea;
                 r.bottom = irc.top;
-                _pageUp.layout(r);
                 _pageUp.visibility = Visibility.Visible;
+                _pageUp.layout(r);
             } else {
                 _pageUp.visibility = Visibility.Invisible;
             }
             if (_scrollArea.bottom > irc.bottom) {
                 r = _scrollArea;
                 r.top = irc.bottom;
-                _pageDown.layout(r);
                 _pageDown.visibility = Visibility.Visible;
+                _pageDown.layout(r);
             } else {
                 _pageDown.visibility = Visibility.Invisible;
             }
@@ -488,16 +488,16 @@ class ScrollBar : AbstractSlider, OnClickHandler {
             if (_scrollArea.left < irc.left) {
                 r = _scrollArea;
                 r.right = irc.left;
-                _pageUp.layout(r);
                 _pageUp.visibility = Visibility.Visible;
+                _pageUp.layout(r);
             } else {
                 _pageUp.visibility = Visibility.Invisible;
             }
             if (_scrollArea.right > irc.right) {
                 r = _scrollArea;
                 r.left = irc.right;
-                _pageDown.layout(r);
                 _pageDown.visibility = Visibility.Visible;
+                _pageDown.layout(r);
             } else {
                 _pageDown.visibility = Visibility.Invisible;
             }