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Optimize RoomList sorting

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Keep the almost sorted list around and sort by the raw timestamp value
instead of doing the expensive toMSecSinceEpoch conversion.
This commit is contained in:
Nicolas Werner 2020-04-30 23:59:17 +02:00
parent e6fcccc8bd
commit 641a883bfd
5 changed files with 41 additions and 35 deletions
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7
src/RoomInfoListItem.cpp
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@ -187,10 +187,11 @@ RoomInfoListItem::paintEvent(QPaintEvent *event)
QFont tsFont;
tsFont.setPointSizeF(tsFont.pointSizeF() * 0.9);
#if QT_VERSION < QT_VERSION_CHECK(5, 11, 0)
const int msgStampWidth = QFontMetrics(tsFont).width(lastMsgInfo_.timestamp) + 4;
const int msgStampWidth =
QFontMetrics(tsFont).width(lastMsgInfo_.descriptiveTime) + 4;
#else
const int msgStampWidth =
QFontMetrics(tsFont).horizontalAdvance(lastMsgInfo_.timestamp) + 4;
QFontMetrics(tsFont).horizontalAdvance(lastMsgInfo_.descriptiveTime) + 4;
#endif
// We use the full width of the widget if there is no unread msg bubble.
const int bottomLineWidthLimit = (unreadMsgCount_ > 0) ? msgStampWidth : 0;
@ -227,7 +228,7 @@ RoomInfoListItem::paintEvent(QPaintEvent *event)
p.setFont(tsFont);
p.drawText(QPoint(width() - wm.padding - msgStampWidth, top_y),
lastMsgInfo_.timestamp);
lastMsgInfo_.descriptiveTime);
p.restore();
} else {
int btnWidth = (width() - wm.iconSize - 6 * wm.padding) / 2;