Draw an object horizontally and with a vertical offset on QPainter

helenebro

Hi,
I want create a image composed of three elements : one image and two text. To do this, I use QPainter. I can draw elements but I can't succeed to correctly align them. I want each element align horizontally and placed below each other.

 ___________________
|      _______      |
|     | image |     |
|     |_______|     |
|                   |
|     my text 1     |
|     my text 2     |
|___________________|

For the moment, I placed them approximately.

QImage image(152, 152, QImage::Format_ARGB32_Premultiplied);

QPainter painter(&image);
painter.fillRect(image.rect(), Qt::white);
QImage pictureSensor("image.png");
int posX = (image.width()-pictureSensor.width())/2;
painter.drawImage(posX,10, pictureSensor);

painter.drawText(30,110, "my text 1");

painter.drawText(20,140, "my text2);

image.save("output.png");

I can horizontally placed text but in this case I can't set 'y' position :

    painter.drawText(image.rect(), Qt::AlignHCenter, QString("text"));

Is there any solution ?

mrjj

@helenebro said:

painter.drawText(image.rect(), Qt::AlignHCenter, QString("text"));

Hi the image.rect() defines the rect where is aligns.
So if you offset the rect.y (in a copy QRect)
u can move start of area.

Alternatively, you can use
http://doc.qt.io/qt-5/qfontmetrics.html
To get width() of you text and do the centering your self.