ExprEditor::ExprEditor(QWidget* parent,ExprControlCollection* controls)
: QWidget(parent),_updatingText(0),errorHeight(0)
{
// timers
controlRebuildTimer=new QTimer();
previewTimer=new QTimer();
// title and minimum size
setWindowTitle("Expression Editor");
setMinimumHeight(100);
// expression controls, we need for signal connections
this->controls = controls;
// make layout
QVBoxLayout* exprAndErrors=new QVBoxLayout;
exprAndErrors->setMargin(0);
setLayout(exprAndErrors);
// create text editor widget
exprTe = new ExprTextEdit(this);
exprTe->setMinimumHeight(50);
// calibrate the font size
int fontsize = 12;
while (QFontMetrics(QFont("Liberation Sans",fontsize)).width("abcdef")<38 && fontsize<20)
fontsize++;
while (QFontMetrics(QFont("Liberation Sans",fontsize)).width("abcdef")>44 && fontsize>3)
fontsize--;
exprTe->setFont(QFont("Liberation Sans",fontsize));
exprAndErrors->addWidget(exprTe);
// create error widget
errorWidget=new QListWidget();
errorWidget->setSelectionMode(QAbstractItemView::SingleSelection);
errorWidget->setSizePolicy(QSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Maximum));
connect(errorWidget,SIGNAL(itemSelectionChanged()),SLOT(selectError()));
clearErrors();
exprAndErrors->addWidget(errorWidget);
// wire up signals
connect(exprTe, SIGNAL(applyShortcut()), SLOT(sendApply()));
connect(exprTe, SIGNAL(nextError()), SLOT(nextError()));
connect(exprTe, SIGNAL(textChanged()), SLOT(exprChanged()));
connect(controls,SIGNAL(controlChanged(int)),SLOT(controlChanged(int)));
connect(controls,SIGNAL(insertString(const std::string&)),SLOT(insertStr(const std::string&)));
connect(controlRebuildTimer, SIGNAL(timeout()), SLOT(rebuildControls()));
connect(previewTimer, SIGNAL(timeout()), SLOT(sendPreview()));
}
void *ArrayImpl::select() {
if(m_size == 0) {
selectError();
}
return m_elem[randSizet(m_size)];
}
const void *ArrayImpl::select() const {
if(m_size == 0) {
selectError();
}
return m_elem[randSizet() % m_size];
}
