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Core: Use a fixed cursor in OutputWindow

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Callgrind shows that movePosition is very expansive.

Change-Id: I84fbb59eb10b97e8222b91604b29a420179cf3e2
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>
This commit is contained in:
Orgad Shaneh
2015-02-24 22:45:44 +02:00
committed by Orgad Shaneh
parent 5044056296
commit a70a886286
1 changed files with 19 additions and 16 deletions
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35
src/plugins/coreplugin/outputwindow.cpp
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@@ -49,7 +49,7 @@ namespace Internal {
class OutputWindowPrivate
{
public:
OutputWindowPrivate()
OutputWindowPrivate(QTextDocument *document)
: outputWindowContext(0)
, formatter(0)
, enforceNewline(false)
@@ -57,6 +57,7 @@ public:
, linksActive(true)
, mousePressed(false)
, maxLineCount(100000)
, cursor(document)
{
}
@@ -74,6 +75,7 @@ public:
bool linksActive;
bool mousePressed;
int maxLineCount;
QTextCursor cursor;
};
} // namespace Internal
@@ -82,7 +84,7 @@ public:
OutputWindow::OutputWindow(Context context, QWidget *parent)
: QPlainTextEdit(parent)
, d(new Internal::OutputWindowPrivate)
, d(new Internal::OutputWindowPrivate(document()))
{
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
//setCenterOnScroll(false);
@@ -291,18 +293,18 @@ void OutputWindow::appendText(const QString &textIn, const QTextCharFormat &form
if (d->maxLineCount > 0 && document()->blockCount() >= d->maxLineCount)
return;
const bool atBottom = isScrollbarAtBottom();
QTextCursor cursor = QTextCursor(document());
cursor.movePosition(QTextCursor::End);
cursor.beginEditBlock();
cursor.insertText(doNewlineEnforcement(text), format);
if (!d->cursor.atEnd())
d->cursor.movePosition(QTextCursor::End);
d->cursor.beginEditBlock();
d->cursor.insertText(doNewlineEnforcement(text), format);
if (d->maxLineCount > 0 && document()->blockCount() >= d->maxLineCount) {
QTextCharFormat tmp;
tmp.setFontWeight(QFont::Bold);
cursor.insertText(doNewlineEnforcement(tr("Additional output omitted") + QLatin1Char('\n')), tmp);
d->cursor.insertText(doNewlineEnforcement(tr("Additional output omitted") + QLatin1Char('\n')), tmp);
}
cursor.endEditBlock();
d->cursor.endEditBlock();
if (atBottom)
scrollToBottom();
}
@@ -329,11 +331,11 @@ void OutputWindow::scrollToBottom()
void OutputWindow::grayOutOldContent()
{
QTextCursor cursor = textCursor();
cursor.movePosition(QTextCursor::End);
QTextCharFormat endFormat = cursor.charFormat();
if (!d->cursor.atEnd())
d->cursor.movePosition(QTextCursor::End);
QTextCharFormat endFormat = d->cursor.charFormat();
cursor.select(QTextCursor::Document);
d->cursor.select(QTextCursor::Document);
QTextCharFormat format;
const QColor bkgColor = palette().base().color();
@@ -343,11 +345,12 @@ void OutputWindow::grayOutOldContent()
format.setForeground(QColor((bkgFactor * bkgColor.red() + fgdFactor * fgdColor.red()),
(bkgFactor * bkgColor.green() + fgdFactor * fgdColor.green()),
(bkgFactor * bkgColor.blue() + fgdFactor * fgdColor.blue()) ));
cursor.mergeCharFormat(format);
d->cursor.mergeCharFormat(format);
cursor.movePosition(QTextCursor::End);
cursor.setCharFormat(endFormat);
cursor.insertBlock(QTextBlockFormat());
if (!d->cursor.atEnd())
d->cursor.movePosition(QTextCursor::End);
d->cursor.setCharFormat(endFormat);
d->cursor.insertBlock(QTextBlockFormat());
}
void OutputWindow::enableUndoRedo()