VuoDialogForInputEditor.cc

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#include "VuoDialogForInputEditor.hh"
#include "VuoInputEditor.hh"
 
const int VuoDialogForInputEditor::popoverArrowHalfWidth = 8; 
 
VuoDialogForInputEditor::VuoDialogForInputEditor(bool isDark, bool showArrow)
{
    setWindowFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
 
    // Transparent background behind rounded corners
    setAttribute(Qt::WA_TranslucentBackground, true);
 
    arrowPixelsFromTopOrLeft = 0;
 
    this->_isDark = isDark;
    this->_showArrow = showArrow;
 
    respondingToKeypress = false;
}
 
QPainterPath VuoDialogForInputEditor::getPopoverPath(void)
{
    int cornerRadius = 8;
    QPainterPath path;
    path.moveTo(width()-popoverArrowHalfWidth-cornerRadius,0);
    path.cubicTo(width()-popoverArrowHalfWidth,0, width()-popoverArrowHalfWidth,0, width()-popoverArrowHalfWidth,cornerRadius);
    path.lineTo(width()-popoverArrowHalfWidth,arrowPixelsFromTopOrLeft-popoverArrowHalfWidth);
    if (_showArrow && arrowPixelsFromTopOrLeft+popoverArrowHalfWidth < height())
        path.lineTo(width(),arrowPixelsFromTopOrLeft);
    path.lineTo(width()-popoverArrowHalfWidth,arrowPixelsFromTopOrLeft+popoverArrowHalfWidth);
    path.lineTo(width()-popoverArrowHalfWidth,height()-cornerRadius);
    path.cubicTo(width()-popoverArrowHalfWidth,height(), width()-popoverArrowHalfWidth,height(), width()-popoverArrowHalfWidth-cornerRadius,height());
    path.lineTo(cornerRadius,height());
    path.cubicTo(0,height(), 0,height(), 0,height()-cornerRadius);
    path.lineTo(0,cornerRadius);
    path.cubicTo(0,0, 0,0, cornerRadius,0);
    path.closeSubpath();
 
    return path;
}
 
QMargins VuoDialogForInputEditor::getPopoverContentsMargins(void) const
{
    return QMargins(5, 5, 5 + popoverArrowHalfWidth, 5);
}
 
QSize VuoDialogForInputEditor::sizeHint(void) const
{
    QRect rect = childrenRect();
    if (rect.width() > 0 && rect.height() > 0)
    {
        QRect rectWithMargins = rect.marginsAdded( getPopoverContentsMargins() );
        return rectWithMargins.size();
    }
 
    return QDialog::sizeHint();
}
 
void VuoDialogForInputEditor::paintEvent(QPaintEvent *event)
{
 
    QColor backgroundColor = _isDark ? QColor("#505050") : QColor("#f9f9f9");
 
    QPainter painter(this);
 
    // Workaround to ensure that transparent background behind rounded corners works consistently
    painter.setCompositionMode(QPainter::CompositionMode_Clear);
    painter.setBrush(backgroundColor);
    painter.drawRect(QRect(0, 0, width(), height()));
    painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
 
    painter.setRenderHint(QPainter::Antialiasing, true);
 
    painter.setPen(Qt::NoPen);
    painter.fillPath(getPopoverPath(), backgroundColor);
}
 
void VuoDialogForInputEditor::showEvent(QShowEvent *event)
{
    QDialog::showEvent(event);
 
    arrowPixelsFromTopOrLeft = height()/2;
}
 
void VuoDialogForInputEditor::keyPressEvent(QKeyEvent *e)
{
    respondingToKeypress = true;
    if (e->key() == Qt::Key_Return || e->key() == Qt::Key_Enter) {
        accept();
    }
 
    QDialog::keyPressEvent(e);
    respondingToKeypress = false;
}
 
bool VuoDialogForInputEditor::event(QEvent *e)
{
    if (e->type() == QEvent::WindowDeactivate)
    {
        // If this deactivation was triggered by a keypress, don't override the
        // accept/reject decision already made in keyPressEvent().
        if (!respondingToKeypress)
            accept();
 
        return true;
    }
 
    return QDialog::event(e);
}
 
void VuoDialogForInputEditor::setShowArrow(bool show)
{
    this->_showArrow = show;
}