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Fix scroll top overflow. Fixes #3524

This commit is contained in:
John Preston 2017-06-29 11:05:24 +03:00
parent 545915e481
commit 7357119b1a
1 changed files with 2 additions and 4 deletions
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6
Telegram/SourceFiles/historywidget.cpp
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@ -5045,7 +5045,7 @@ void HistoryWidget::updateHistoryGeometry(bool initial, bool loadedDown, const S
_updateHistoryGeometryRequired = false;
if ((!initial && !wasAtBottom) || (loadedDown && (!_history->showFrom || _history->unreadBar || _history->loadedAtBottom()) && (!_migrated || !_migrated->showFrom || _migrated->unreadBar || _history->loadedAtBottom()))) {
auto toY = _list->historyScrollTop();
auto toY = qMin(_list->historyScrollTop(), _scroll->scrollTopMax());
if (change.type == ScrollChangeAdd) {
toY += change.value;
} else if (change.type == ScrollChangeNoJumpToBottom) {
@ -5054,9 +5054,7 @@ void HistoryWidget::updateHistoryGeometry(bool initial, bool loadedDown, const S
toY += _addToScroll;
_addToScroll = 0;
}
if (toY > _scroll->scrollTopMax()) {
toY = _scroll->scrollTopMax();
}
toY = snap(toY, 0, _scroll->scrollTopMax());
if (_scroll->scrollTop() == toY) {
visibleAreaUpdated();
} else {