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Guard against flickering for items added to the top of the timeline

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This commit is contained in:
Konstantinos Sideris 2018-08-31 18:34:54 +03:00
parent 27fed83083
commit e9a8e51208
2 changed files with 12 additions and 7 deletions
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8
src/timeline/TimelineView.cpp
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@ -634,11 +634,11 @@ TimelineView::addTimelineItem(QWidget *item, TimelineDirection direction)
auto separator = new DateSeparator(newDate, this); auto separator = new DateSeparator(newDate, this);
if (separator) if (separator)
pushTimelineItem(separator); pushTimelineItem(separator, direction);
} }
} }
pushTimelineItem(item); pushTimelineItem(item, direction);
} else { } else {
if (scroll_layout_->count() > 0) { if (scroll_layout_->count() > 0) {
const auto firstItem = scroll_layout_->itemAt(0)->widget(); const auto firstItem = scroll_layout_->itemAt(0)->widget();
@ -650,12 +650,12 @@ TimelineView::addTimelineItem(QWidget *item, TimelineDirection direction)
auto separator = new DateSeparator(oldDate); auto separator = new DateSeparator(oldDate);
if (separator) if (separator)
scroll_layout_->insertWidget(0, separator); pushTimelineItem(separator, direction);
} }
} }
} }
scroll_layout_->insertWidget(0, item); pushTimelineItem(item, direction);
} }
} }

9
src/timeline/TimelineView.h
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@ -194,17 +194,22 @@ private:
void getMessages(); void getMessages();
//! HACK: Fixing layout flickering when adding to the bottom //! HACK: Fixing layout flickering when adding to the bottom
//! of the timeline. //! of the timeline.
void pushTimelineItem(QWidget *item) void pushTimelineItem(QWidget *item, TimelineDirection dir)
{ {
setUpdatesEnabled(false); setUpdatesEnabled(false);
item->hide(); item->hide();
if (dir == TimelineDirection::Top)
scroll_layout_->insertWidget(0, item);
else
scroll_layout_->addWidget(item); scroll_layout_->addWidget(item);
QTimer::singleShot(0, this, [item, this]() { QTimer::singleShot(0, this, [item, this]() {
item->show(); item->show();
item->adjustSize(); item->adjustSize();
setUpdatesEnabled(true); setUpdatesEnabled(true);
}); });
}; }
//! Decides whether or not to show or hide the scroll down button. //! Decides whether or not to show or hide the scroll down button.
void toggleScrollDownButton(); void toggleScrollDownButton();