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Qt: implement tty auto scroll

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This commit is contained in:
Megamouse 2018-06-23 04:06:02 +02:00
parent ab84a67511
commit 7788007cbd
1 changed files with 28 additions and 0 deletions
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28
rpcs3/rpcs3qt/log_frame.cpp
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@ -463,9 +463,37 @@ void log_frame::UpdateUI()
if (buf.size() && m_TTYAct->isChecked())
{
// save old scroll bar state
QScrollBar *sb = m_tty->verticalScrollBar();
const int sb_pos = sb->value();
const bool is_max = sb_pos == sb->maximum();
// save old selection
QTextCursor text_cursor{m_tty->document()};
const int sel_pos = text_cursor.position();
int sel_start = text_cursor.selectionStart();
int sel_end = text_cursor.selectionEnd();
// clear selection or else it will get colorized as well
text_cursor.clearSelection();
// write text to the end
text_cursor.movePosition(QTextCursor::End);
text_cursor.insertText(qstr(buf));
// if we mark text from right to left we need to swap sides (start is always smaller than end)
if (sel_pos < sel_end)
{
std::swap(sel_start, sel_end);
}
// reset old text cursor and selection
text_cursor.setPosition(sel_start);
text_cursor.setPosition(sel_end, QTextCursor::KeepAnchor);
m_tty->setTextCursor(text_cursor);
// set scrollbar to max means auto-scroll
sb->setValue(is_max ? sb->maximum() : sb_pos);
}
// Limit processing time