View Full Version : Bi-directional QProgressBar, drawn from the center?
Is it possible to configure the QProgressBar (or some similar widget) to display a bar that extends out from the center (rather than from one end)? For example, with a range from -100 to 100, I'd like a value of -50 to display a bar that extends from the midpoint, halfway to the left-hand side. A value of zero would display no bar at all.
Is there an existing control that would do this, or would it require a custom widget?
--Colin
Lykurg
9th May 2012, 21:55
I am not aware of such a widget. But you can simply subclass QProgressBar and overwrite the paint method. By using QStyledPainter or QStyle direct, you can even make the widget style aware.
What is the best way to draw the filled, rounded rectangle that is normally drawn by CE_ProgressBarContents? Do I need to use QStylePainter::drawRoundRect() and then somehow fill it to to match the style? (The style I normally use has light- and dark-blue stripes in the progress bar fill.)
Lykurg
12th May 2012, 21:46
the best way is to draw it with CE_ProgressBarContents! Use QStyle::drawControl() and just alter QStyleOption with the rectangle you want.
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