[Cairo] mouse pointer and cairo - text selection
cworth at east.isi.edu
Wed Oct 15 05:53:28 PDT 2003
On Oct 15, Thomas Hunger wrote:
> I wonder if it would be wrong to decompose text intro lines and splines
> directly in cairo. I can think of these advantages:
There's definitely a plan to add functions that accept a string or a
list of glyphs and append their outlines to the current path
cairo_text_path (cairo_t *ct, const unsigned char *utf8);
cairo_glyph_path (cairo_t *ct, cairo_glyph_t *glyphs, int num_glyphs);
> - cairo_stroke operations could be used to create outlined text with all the
> cairo capabilities - different cap and line styles, a tolerance to control
> rendering accuracy.
Yes, this will be enabled by the above functions.
> - if there will be gradient operations some time they could be applied to
> text, too, using cairo_fill.
This won't actually require converting text to paths first. Both
cairo_show_text and cairo_show_glyphs will always paint with the
> a big disadvatage is that font hinting would be ignored completely.
Font hinting is, of course, very important. So the internal
implementation of cairo_show_text and cairo_show_glyphs will likely
never go through a conversion to paths.
> I know that i am talking about a lot of work, just wanted to know what you
> think. Or does freetype already offer these functions?
Freetype does make the outlines available, so implementing the
functions above will likely not be too much work).
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