VuoInputEditorWithDialog.cc

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#include "VuoInputEditorWithDialog.hh"
#include "VuoDialogForInputEditor.hh"
 
VuoInputEditorWithDialog::VuoInputEditorWithDialog(void)
    : VuoInputEditor()
{
    dialogPointer = NULL;
    firstWidgetInTabOrder = NULL;
    lastWidgetInTabOrder = NULL;
}
 
json_object * VuoInputEditorWithDialog::show(QPoint portLeftCenter, json_object *originalValue, json_object *details, map<QString, json_object *> portNamesAndValues)
{
    json_object *o = NULL;
 
    isDark = false;
    if (json_object_object_get_ex(details, "isDark", &o))
        isDark = json_object_get_boolean(o);
 
    bool showArrow = true;
    if (json_object_object_get_ex(details, "showArrow", &o))
        showArrow = json_object_get_boolean(o);
 
    VuoDialogForInputEditor dialog(isDark, showArrow);
    dialogPointer = &dialog;
    setUpDialog(dialog, originalValue, details);
 
    // Move children to account for margins if no autolayout is used.
    QMargins margin = dialog.getPopoverContentsMargins();
 
    if( dialog.layout() == 0 )
    {
        QPoint topLeftMargin = QPoint(margin.left(),margin.top());
        foreach (QObject *widget, dialog.children())
            static_cast<QWidget *>(widget)->move(static_cast<QWidget *>(widget)->pos() + topLeftMargin);
    }
 
    // Resize dialog to enclose child widgets and margins.
    dialog.adjustSize();
 
    // Position the right center of the dialog at the left center of the port, or wherever required
    // so that the entire dialog fits within the available screenspace.
    int availableSpaceLeftBoundary = QApplication::desktop()->availableGeometry(&dialog).left();
    QPoint dialogTopLeft = portLeftCenter - QPoint(dialog.width() - (showArrow ? 0 : margin.right()), dialog.height()/2.);
    bool screenSpaceLimitsPos = (availableSpaceLeftBoundary > dialogTopLeft.x());
    if (screenSpaceLimitsPos)
    {
        dialogTopLeft = (screenSpaceLimitsPos? QPoint(availableSpaceLeftBoundary, dialogTopLeft.y()) :
                                               dialogTopLeft);
        showArrow = false;
    }
    dialog.setShowArrow(showArrow);
    dialog.move(dialogTopLeft);
 
 
    dialog.show();  // Needed to position the dialog. (https://bugreports.qt-project.org/browse/QTBUG-31406)
    dialog.exec();
 
    dialogPointer = NULL;
 
    return (dialog.result() == QDialog::Accepted ? getAcceptedValue() : originalValue);
}
 
QDialog * VuoInputEditorWithDialog::getDialog(void)
{
    return dialogPointer;
}
 
void VuoInputEditorWithDialog::setFirstWidgetInTabOrder(QWidget *widget)
{
    if (firstWidgetInTabOrder)
        firstWidgetInTabOrder->removeEventFilter(this);
 
    if (widget)
        widget->installEventFilter(this);
 
    firstWidgetInTabOrder = widget;
}
 
void VuoInputEditorWithDialog::setLastWidgetInTabOrder(QWidget *widget)
{
    if (lastWidgetInTabOrder)
        lastWidgetInTabOrder->removeEventFilter(this);
 
    if (widget)
        widget->installEventFilter(this);
 
    lastWidgetInTabOrder = widget;
}
 
bool VuoInputEditorWithDialog::eventFilter(QObject *object, QEvent *event)
{
    // If the input editor's final tab cycle element has received a 'Tab' keypress,
    // or its first tab cycle element has received a 'Shift'+'Tab' keypress,
    // emit the appropriate signal and then treat the 'Tab' as an 'Return' to accept and
    // close the input editor.
    if (event->type() == QEvent::KeyPress)
    {
        QKeyEvent *keyEvent = (QKeyEvent *)(event);
        bool tabPressed = (keyEvent->key() == Qt::Key_Tab);
        bool shiftTabPressed = (keyEvent->key() == Qt::Key_Backtab);
 
        bool aboutToCompleteReverseTabCycle = ((object == firstWidgetInTabOrder) && shiftTabPressed);
        bool aboutToCompleteTabCycle = ((object == lastWidgetInTabOrder) && tabPressed);
 
        if (aboutToCompleteReverseTabCycle || aboutToCompleteTabCycle)
        {
            QKeyEvent modifiedKeyEvent(event->type(), Qt::Key_Return, 0);
            QApplication::sendEvent(object, &modifiedKeyEvent);
 
            if (aboutToCompleteReverseTabCycle)
            {
                emit valueChanged(getAcceptedValue());
                emit tabbedBackwardPastFirstWidget();
            }
 
            else // if (aboutToCompleteTabCycle)
            {
                emit valueChanged(getAcceptedValue());
                emit tabbedPastLastWidget();
            }
 
            return true;
        }
    }
 
    return VuoInputEditor::eventFilter(object, event);
}