From 2274642f1219590b63fd1e407aee403b5bdb9712 Mon Sep 17 00:00:00 2001
From: Konstantinos Sideris <sideris.konstantin@gmail.com>
Date: Tue, 23 Jan 2018 17:34:57 +0200
Subject: [PATCH] Show the scroll-down button when showing the timeline

---
 include/timeline/TimelineView.h |  2 ++
 src/timeline/TimelineView.cc    | 26 +++++++++++++++++---------
 2 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/include/timeline/TimelineView.h b/include/timeline/TimelineView.h
index 1ebf6eb7..ddabf104 100644
--- a/include/timeline/TimelineView.h
+++ b/include/timeline/TimelineView.h
@@ -134,6 +134,8 @@ private:
                 });
         };
 
+        //! Decides whether or not to show or hide the scroll down button.
+        void toggleScrollDownButton();
         void init();
         void addTimelineItem(TimelineItem *item, TimelineDirection direction);
         void updateLastSender(const QString &user_id, TimelineDirection direction);
diff --git a/src/timeline/TimelineView.cc b/src/timeline/TimelineView.cc
index a085b1e0..31d190cc 100644
--- a/src/timeline/TimelineView.cc
+++ b/src/timeline/TimelineView.cc
@@ -130,15 +130,7 @@ TimelineView::sliderMoved(int position)
         if (!scroll_area_->verticalScrollBar()->isVisible())
                 return;
 
-        const int maxScroll     = scroll_area_->verticalScrollBar()->maximum();
-        const int currentScroll = scroll_area_->verticalScrollBar()->value();
-
-        if (maxScroll - currentScroll > SCROLL_BAR_GAP) {
-                scrollDownBtn_->show();
-                scrollDownBtn_->raise();
-        } else {
-                scrollDownBtn_->hide();
-        }
+        toggleScrollDownButton();
 
         // The scrollbar is high enough so we can start retrieving old events.
         if (position < SCROLL_BAR_GAP) {
@@ -641,6 +633,8 @@ TimelineView::showEvent(QShowEvent *event)
                 scrollDown();
         }
 
+        toggleScrollDownButton();
+
         readLastEvent();
 
         QWidget::showEvent(event);
@@ -766,3 +760,17 @@ TimelineView::getEventSender(const mtx::events::collections::TimelineEvents &eve
 
         return QString("");
 }
+
+void
+TimelineView::toggleScrollDownButton()
+{
+        const int maxScroll     = scroll_area_->verticalScrollBar()->maximum();
+        const int currentScroll = scroll_area_->verticalScrollBar()->value();
+
+        if (maxScroll - currentScroll > SCROLL_BAR_GAP) {
+                scrollDownBtn_->show();
+                scrollDownBtn_->raise();
+        } else {
+                scrollDownBtn_->hide();
+        }
+}