kpDualColorButton::kpDualColorButton (QWidget *parent)
: QFrame (parent),
m_dragStartPoint (KP_INVALID_POINT)
{
setSizePolicy (QSizePolicy::Fixed/*horizontal*/,
QSizePolicy::Fixed/*vertical*/);
setFrameStyle (QFrame::Panel | QFrame::Sunken);
m_color [0] = kpColor (0, 0, 0); // black
m_color [1] = kpColor (255, 255, 255); // white
setAcceptDrops (true);
}
// protected virtual [base QWidget]
void kpDualColorButton::dropEvent (QDropEvent *e)
{
QColor col = KColorMimeData::fromMimeData (e->mimeData ());
#if DEBUG_KP_DUAL_COLOR_BUTTON
qCDebug(kpLogWidgets) << "kpDualColorButton::dropEvent() col="
<< (int *) col.rgba()
<< " (with alpha=" << (int *) col.rgba () << ")" << endl;
#endif
if (col.isValid ())
{
if (foregroundRect ().contains (e->pos ()))
setForegroundColor (kpColor (col.rgba()));
else if (backgroundRect ().contains (e->pos ()))
setBackgroundColor (kpColor (col.rgba()));
}
}
// protected virtual [base QWidget]
void kpDualColorButton::mouseDoubleClickEvent (QMouseEvent *e)
{
int whichColor = -1;
if (foregroundRect ().contains (e->pos ()))
whichColor = 0;
else if (backgroundRect ().contains (e->pos ()))
whichColor = 1;
if (whichColor == 0 || whichColor == 1)
{
QColorDialog dialog(this);
dialog.setCurrentColor(color(whichColor).toQColor());
dialog.setOptions(QColorDialog::ShowAlphaChannel);
if ( dialog.exec() == QDialog::Accepted )
setColor(whichColor, kpColor(dialog.currentColor().rgba()));
}
}
// public
kpColor kpTransformAutoCropBorder::averageColor () const
{
if (!m_rect.isValid ())
return kpColor::Invalid;
if (m_referenceColor.isTransparent ())
return kpColor::Transparent;
else if (m_processedColorSimilarity == 0)
return m_referenceColor;
else
{
int numPixels = (m_rect.width () * m_rect.height ());
Q_ASSERT (numPixels > 0);
return kpColor (m_redSum / numPixels,
m_greenSum / numPixels,
m_blueSum / numPixels);
}
}
// public
kpColor kpToolAutoCropBorder::averageColor () const
{
if (!m_rect.isValid ())
return kpColor::invalid;
if (m_referenceColor.isTransparent ())
return kpColor::transparent;
else if (m_processedColorSimilarity == 0)
return m_referenceColor;
else
{
int numPixels = (m_rect.width () * m_rect.height ());
if (numPixels <= 0)
{
kdError () << "kpToolAutoCropBorder::averageColor() rect=" << m_rect << endl;
return kpColor::invalid;
}
return kpColor (m_redSum / numPixels,
m_greenSum / numPixels,
m_blueSum / numPixels);
}
}
