Looking for a tutorial
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Hello,
I'm looking for a nice Qt 5.5 tutorial that would show me how to put different texts with different sizes and different fonts on a QImage via a QPainter. And if possible, a tutorial on how to draw a -justified- text on a QImage.
I've googled this but I haven't quite found what I needed. I apologize if I missed something obvious.
Thank you.
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To create a QPainter that will paint on a QImage simply pass the QImage as the parameter in the QPainter constructor.
To change font of a QPainter use setFont().
To draw a justified text use the drawText() method of a QPainter and pass
Qt::AlignJustifyin theflagsargument of the method. -
Thank you for your help, that works perfectly!
May I also ask how to "stretch" the height of a text? There is QFont::setStretch(int) but that only works for width, and I would like to amplify the height.
I've found a workaround with
QPainterObject.setTransform(QTransform(1.0, 0, 0, factor, 0, 0));
but that messes with positions. (If I want to draw a text at (100, 100) it will be drawn at (100, 100*factor) instead.)
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You can only control the horizontal stretch, but this is enough.
If you want to make the text stretch lets say 200% vertically then make it 2 times bigger usingfont.setPointSize(font.pointSize() * 2)and set the stretch to half usingfont.setStretch(50). -
You can only control the horizontal stretch, but this is enough.
If you want to make the text stretch lets say 200% vertically then make it 2 times bigger usingfont.setPointSize(font.pointSize() * 2)and set the stretch to half usingfont.setStretch(50).Thank you so much!
