Setting non-expanding text on an expanding Image

Uday More

I have a Qimage on Qlabel which expands based on the window expansion. Hence the Image also expands.
I have set simple text into the QImage using Qpainter as below

QPainter* painter = new QPainter(&myImage);
painter->setPen(Qt::red);
painter->setFont(QFont("Arial", 5));
painter->drawText(myImage.rect(), Qt::AlignLeft, "MyText");

But i don't want the text on the image to expand . How can I acheive it ?
Also the image is going to be grayscale. Hence, the text also changes to grayscale. I want the text to be colorful (Eg : Red, white etc.).

Any suggestions.

mrjj

Hi
I would make my own QLabel and then simply first paint the image, then paint the text.
So the text is not part of the image but painted dynamically. ( that also allows for colors etc)
Currently, you make the text part of the image so it scales with it and is kinda hrd to remove again.

Uday More

@mrjj @SGaist
This code below is the paintevent override

void ClickableDistanceLabel::paintEvent(QPaintEvent *event)
{
qInfo () << FUNCTION;

QPainter p(this);
p.drawImage(this->rect(), pixmap()->toImage());

QLabel *distanceLabel = new QLabel(this);
distanceLabel->setFrameStyle(QFrame::Panel | QFrame::Raised);
distanceLabel->setText("Distance");
distanceLabel->setAlignment(Qt::AlignTop | Qt::AlignLeft);
distanceLabel->setGeometry(0,0,70,20);
p.drawRect(distanceLabel->rect());
distanceLabel->raise();

}

But i don't get the text "Distance" on it.
Am I missing something.

mrjj

Hi
That will generate a billion QLabels !
since each paintEvent will allocate a new.
and besides its wrong to do allocate it in the paintEvent, that
you should do elsewhere if you really must use a QLabel.

Anyway,
Why not just draw the text since you have a painter?

p.drawText( 20,20, "Distance");
It can also take aligement options etc.

Uday More

@mrjj

The below code works. I need not create a label everytime.

QPainter painter(this);
painter.drawImage(this->rect(), pixmap()->toImage());
painter.setPen(Qt::green);
painter.setFont(QFont("Arial", 13));
painter.drawText(QRectF(0,0,90,20), "Distance");

mrjj

@Uday-More

Super.
If you want you could do
painter.drawPixmap(this->rect(), pixmap());
so you dont have to convert to QImage every time you draw.