How do I find out either
- what the (average) width of characters of a given font/
fontset is? or
`frame-char-width' or height gives the pixel width or height of the
frame's
default font.
Yes, but they only work with an existing frame as parameter.
I only have a font/fontset or some frame-parameters, but not a frame.
- what, given a set of frame-parameters (including font and
width and
height), what the pixel-width and pixel-height of a frame are
going
to be once it is created?
If the frame is to fit the buffer (you mentioned font size), then
you need
to calculate the line length and number of lines, then multiply
these by the
frame-char-width and frame-char-height. You can see code that
calculates
frame size from buffer size here:
http://www.emacswiki.org/elisp/fit-frame.el.
I need to know what width a frame is going to have in pixels, before
it is created. Frames are not fitted by default, and I'm not trying
to fit frames. I'm just trying to determine a decent position to open
the frame at.
That's why I was asking for frame-char-width for a given font, to
calculate the pixel-width.
> Otherwise, what do you mean by the frame size - it could be
anything you
> want. What is the relation between the frame parameters you
mention and the
> frame size you want?
Frames are created with whatever is set in the width / height
specification of the default-frame-alist (or whatever is given to
make-frame). These specifications are in characters / lines, not
pixels. I just need to translate to pixels.
Anyone??
- D
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