CODEWITHSUNDEEP
javaswingfontsawtfontmetrics
user1311390
user1311390

Reputation:

Java Graphics: Constructing FontMetrics from Font, without a Graphics2D

Known

Given FontMetrics

There is a protected constructor for FontMetrics from Font.

Question:

Given a Font object, is there a way to construct a FontMetrics object without going through Graphics2D.setFont, Graphics2D.getFontMetric()?

Context

I'm playing with a TeX like rendering algorithm. I need to calculate bounding boxes & the such for various characters from a *.pfb file. I can construct a Font object from the *.pfb file. I need a FontMetrics object to get the ascent, descent, width. It just seems very ugly for me to have to construct an unused intermediate Graphics object just to get at the FontMetrics.

Upvotes: 2

Views: 3318

Answers (2)

Lonzak
Lonzak

Reputation: 9816

Or completely without the use of the graphics object:

Font font = new Font("Helvetica",Font.PLAIN,12);
Canvas c = new Canvas();
FontMetrics fm = c.getFontMetrics(font);

If you now call c.getGraphics() it will return null. This (canvas) will also work in headless mode.

Upvotes: 1

Andrew Thompson
Andrew Thompson

Reputation: 168795

Given a Font object, is there a way to construct a FontMetrics object without going through Graphics2D.setFont, Graphics2D.getFontMetric()?

See BufferedImage.createGraphics() or getGraphics() for an alternative way to get the Graphics instance.

Upvotes: 4

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