String length in pixels in Java
Is there a way to calculate the length of a string in pixels, given a certain java.awt.Font object, that does not use any GUI components?
that does not use any GUI components?
It depends on what you mean here. I’m assuming you mean you want to do it without receiving a
The best way is with a
BufferedImage. AFAIK, this won’t throw a
Font font = ... ; BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB); FontMetrics fm = img.getGraphics().getFontMetrics(font); int width = fm.stringWidth("Your string");
Other than using something like this, I don’t think you can. You need a graphics context in order to create a
FontMetrics and give you font size information.
You can use the
Graphics2D object to get the font bounds (including the width):
Graphics2D g2d = ... Font font = ... Rectangle2D f = font.getStringBounds("hello world!", g2d.getFontRenderContext());
But that depends on how you will get the
Graphics2D object (for example from an
This gives the output of (137.0, 15.09375) for me. I have no idea what the units are, but it certainly looks proportionally correct and doesn’t use Graphics2D directly.
Font f = new Font("Ariel", Font.PLAIN, 12); Rectangle2D r = f.getStringBounds("Hello World! Hello World!", new FontRenderContext(null, RenderingHints.VALUE_TEXT_ANTIALIAS_DEFAULT, RenderingHints.VALUE_FRACTIONALMETRICS_DEFAULT)); System.out.println("(" + r.getWidth() + ", " + r.getHeight() + ")");
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