bool ScintillaEditor::modifyNumber(int key)
{
int line, index;
qsci->getCursorPosition(&line, &index);
auto text=qsci->text(line);
int lineFrom, indexFrom, lineTo, indexTo;
qsci->getSelection(&lineFrom, &indexFrom, &lineTo, &indexTo);
auto hadSelection=qsci->hasSelectedText();
auto begin=QRegExp("[-+]?\\d*\\.?\\d*$").indexIn(text.left(index));
auto end=text.indexOf(QRegExp("[^0-9.]"),index);
if (end<0) end=text.length();
auto nr=text.mid(begin,end-begin);
if ( !(nr.contains(QRegExp("^[-+]?\\d*\\.?\\d*$")) && nr.contains(QRegExp("\\d"))) ) return false;
auto sign=nr[0]=='+'||nr[0]=='-';
if (nr.endsWith('.')) nr=nr.left(nr.length()-1);
auto curpos=index-begin;
auto dotpos=nr.indexOf('.');
auto decimals=dotpos<0?0:nr.length()-dotpos-1;
auto number=(dotpos<0)?nr.toLongLong():(nr.left(dotpos)+nr.mid(dotpos+1)).toLongLong();
auto tail=nr.length()-curpos;
auto exponent=tail-((dotpos>=curpos)?1:0);
long long int step=1;
for (int i=exponent; i>0; i--) step*=10;
switch (key) {
case Qt::Key_Up: number+=step; break;
case Qt::Key_Down: number-=step; break;
}
auto negative=number<0;
if (negative) number=-number;
auto newnr=QString::number(number);
if (decimals) {
if (newnr.length()<=decimals) newnr.prepend(QString(decimals-newnr.length()+1,'0'));
newnr=newnr.left(newnr.length()-decimals)+"."+newnr.right(decimals);
}
if (tail>newnr.length()) {
newnr.prepend(QString(tail-newnr.length(),'0'));
}
if (negative) newnr.prepend('-');
else if (sign) newnr.prepend('+');
qsci->setSelection(line, begin, line, end);
qsci->replaceSelectedText(newnr);
qsci->selectAll(false);
if (hadSelection)
{
qsci->setSelection(lineFrom, indexFrom, lineTo, indexTo);
}
qsci->setCursorPosition(line, begin+newnr.length()-tail);
emit previewRequest();
return true;
}
void LibraryTreeWidget::onCurrentItemChanged(QTreeWidgetItem* current, QTreeWidgetItem* previous)
{
if (current != 0)
{
QString fileName = current->data(0, Qt::UserRole).toMap()["filename"].toString();
if (fileName.isEmpty() == false)
{
QDir dir = QFileInfo(projectFileName_).dir();
emit previewRequest(current->text(0), QDir::cleanPath(dir.absoluteFilePath(fileName)));
}
}
}
bool ScintillaEditor::eventFilter(QObject* obj, QEvent *e)
{
static bool wasChanged=false;
static bool previewAfterUndo=false;
if (obj != qsci) return EditorInterface::eventFilter(obj, e);
if ( e->type()==QEvent::KeyPress
|| e->type()==QEvent::KeyRelease
) {
QKeyEvent *ke = static_cast<QKeyEvent*>(e);
if ((ke->modifiers() & ~Qt::KeypadModifier) == Qt::AltModifier) {
switch (ke->key())
{
case Qt::Key_Left:
case Qt::Key_Right:
if (e->type()==QEvent::KeyPress) {
navigateOnNumber(ke->key());
}
return true;
case Qt::Key_Up:
case Qt::Key_Down:
if (e->type()==QEvent::KeyPress) {
if (!wasChanged) qsci->beginUndoAction();
if (modifyNumber(ke->key())) {
wasChanged=true;
previewAfterUndo=true;
}
if (!wasChanged) qsci->endUndoAction();
}
return true;
}
}
if (previewAfterUndo && e->type()==QEvent::KeyPress) {
int k=ke->key() | ke->modifiers();
if (wasChanged) qsci->endUndoAction();
wasChanged=false;
QsciCommand *cmd=qsci->standardCommands()->boundTo(k);
if ( cmd && ( cmd->command()==QsciCommand::Undo || cmd->command()==QsciCommand::Redo ) )
QTimer::singleShot(0,this,SIGNAL(previewRequest()));
else if ( cmd || !ke->text().isEmpty() ) {
// any insert or command (but not undo/redo) cancels the preview after undo
previewAfterUndo=false;
}
}
}
return false;
}
