What QICon state is used when QToolButton isDown?

buckler

Hello,
I am successfully using multiple QIcon states for various states of QToolButton. However, I cannot see how to use a different state when a button "isDown". I have done web searches and I see this discussed from time to time but have not yet found a direct answer on how to do this.

SGaist

Hi,

Doesn't the On/Off state do that ?

raven-worx

@buckler
I think this is not supported by default.

Try the following example:

#define COLOREDPIX(COLOR) QPixmap COLOR ## Pix(16,16); COLOR ## Pix.fill(Qt:: ## COLOR);
...
COLOREDPIX(red);
COLOREDPIX(yellow);
COLOREDPIX(green);
COLOREDPIX(blue);
COLOREDPIX(black);
COLOREDPIX(white);
COLOREDPIX(magenta);
COLOREDPIX(cyan);

QIcon icon;
    icon.addPixmap(redPix, QIcon::Normal, QIcon::On);
    icon.addPixmap(yellowPix, QIcon::Disabled, QIcon::On);
    icon.addPixmap(greenPix, QIcon::Active, QIcon::On);
    icon.addPixmap(bluePix, QIcon::Selected, QIcon::On);
    icon.addPixmap(blackPix, QIcon::Normal, QIcon::Off);
    icon.addPixmap(whitePix, QIcon::Disabled, QIcon::Off);
    icon.addPixmap(magentaPix, QIcon::Active, QIcon::Off);
    icon.addPixmap(cyanPix, QIcon::Selected, QIcon::Off);

QPushButton* button = new QPushButton;
    button->setIcon( icon );
    button->show();

QIcon::Normal -> unfocused
QIcon::Disabled -> disabled
QIcon::Selected -> selected (maybe used in QGraphicsView, i don't know)
QIcon::Active -> focused

QIcon::On -> checked
QIcon::Off -> unchecked

A possible workaround - when you do not depend on the checked state of the button:

void MyPushButton::paintEvent(QPaintEvent *)
{
    QStylePainter p(this);
    QStyleOptionButton option;
    initStyleOption(&option);
    if( m_isPressed )
          option.state |= QStyle::State_On;
    p.drawControl(QStyle::CE_PushButton, option);
}

Make sure you set the m_isPressed in the mouseButtonPress event handler to true and to false in the mouseButtonRelease event handler.
This is also necessary for keyPress/Release for the space key.

buckler

Thank you both! Raven-worx confirms that while it isn't easy to do, yet it is possible to do!