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Show the scroll-down button when showing the timeline

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This commit is contained in:
Konstantinos Sideris 2018-01-23 17:34:57 +02:00
parent 48dabdfdc7
commit 2274642f12
2 changed files with 19 additions and 9 deletions
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2
include/timeline/TimelineView.h
View file

@ -134,6 +134,8 @@ private:
}); });
}; };
//! Decides whether or not to show or hide the scroll down button.
void toggleScrollDownButton();
void init(); void init();
void addTimelineItem(TimelineItem *item, TimelineDirection direction); void addTimelineItem(TimelineItem *item, TimelineDirection direction);
void updateLastSender(const QString &user_id, TimelineDirection direction); void updateLastSender(const QString &user_id, TimelineDirection direction);

26
src/timeline/TimelineView.cc
View file

@ -130,15 +130,7 @@ TimelineView::sliderMoved(int position)
if (!scroll_area_->verticalScrollBar()->isVisible()) if (!scroll_area_->verticalScrollBar()->isVisible())
return; return;
const int maxScroll = scroll_area_->verticalScrollBar()->maximum(); toggleScrollDownButton();
const int currentScroll = scroll_area_->verticalScrollBar()->value();
if (maxScroll - currentScroll > SCROLL_BAR_GAP) {
scrollDownBtn_->show();
scrollDownBtn_->raise();
} else {
scrollDownBtn_->hide();
}
// The scrollbar is high enough so we can start retrieving old events. // The scrollbar is high enough so we can start retrieving old events.
if (position < SCROLL_BAR_GAP) { if (position < SCROLL_BAR_GAP) {
@ -641,6 +633,8 @@ TimelineView::showEvent(QShowEvent *event)
scrollDown(); scrollDown();
} }
toggleScrollDownButton();
readLastEvent(); readLastEvent();
QWidget::showEvent(event); QWidget::showEvent(event);
@ -766,3 +760,17 @@ TimelineView::getEventSender(const mtx::events::collections::TimelineEvents &eve
return QString(""); 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();
}
}