diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/fl_draw.cxx | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/fl_draw.cxx b/src/fl_draw.cxx index 061b50e77..65f554f6b 100644 --- a/src/fl_draw.cxx +++ b/src/fl_draw.cxx @@ -422,6 +422,31 @@ void fl_measure(const char* str, int& w, int& h, int draw_symbols) { h = lines*h; } +/** + This function returns the actual height of the specified \p font + and \p size. Normally the font height should always be 'size', + but with the advent of XFT, there are (currently) complexities + that seem to only be solved by asking the font what its actual + font height is. (See STR#2115) + + This function was originally undocumented in 1.1.x, and was used + only by Fl_Text_Display. We're now documenting it in 1.3.x so that + apps that need precise height info can get it with this function. + + \returns the height of the font in pixels. + + \todo In the future, when the XFT issues are resolved, this function + should simply return the 'size' value. +*/ +int fl_height(int font, int size) { + if ( font == fl_font() && size == fl_size() ) return(fl_height()); + int tf = fl_font(), ts = fl_size(); // save + fl_font(font,size); + int height = fl_height(); + fl_font(tf,ts); // restore + return(height); +} + // // End of "$Id$". // |