Display text vertically using XDrawString

Question

I am using XDrawString to display text on a drawing area. By default this seems to display text horizontally from Left to Right.

Could any one please tell me how I can use this library function to rotate and display text vertically from Top to Bottom or from Bottom to top.

Thanks in advance for you help.

score 0 · Answer 1 · answered Feb 24 '14 at 10:05

0

You need to call it once per character, there's no single function that can draw a rotated string in Xlib. Here's a quote from the Programming Manual:

Vertical Text and Rotated Text

Xlib provides routines that draw horizontal strings, but not vertical ones. If you want to draw strings vertically that read normally, you need to use a separate text drawing call for each character. You use a baseline with the same x coordinate but a different y coordinate for each character.

answered Feb 24 '14 at 10:05

unwind

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Thanks for your answer. On another note, is it possible to rotate text using the Xlib library? – arun nath Feb 24 '14 at 13:29
Use XRender - you can set any 2x2 transformation matrix for compositing operations – Andrey Sidorov Feb 25 '14 at 03:41

Display text vertically using XDrawString

1 Answers1