merged.h File Reference

Merged colours. More...

#include "config.h"

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Functions
const struct AttrColor *	merged_color_overlay (const struct AttrColor *base, const struct AttrColor *over)
	Combine two colours.
void	merged_colors_cleanup (void)
	Free the list of Merged colours.
void	merged_colors_init (void)
	Initialise the Merged colours.

Detailed Description

Merged colours.

Authors

• Richard Russon

Copyright

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file merged.h.

Function Documentation

merged_color_overlay()

const struct AttrColor * merged_color_overlay	(	const struct AttrColor *	base,
		const struct AttrColor *	over )

Combine two colours.

Parameters

base	Base colour
over	Overlay colour

Return values

ptr	Merged colour

If either the foreground or background of the overlay is 'default', then the base colour will show through. The attributes of both base and overlay will be OR'd together.

Definition at line 107 of file merged.c.

{
  if (!attr_color_is_set(over))
    return base;
  if (!attr_color_is_set(base))
    return over;
 
  struct CursesColor *cc_base = base->curses_color;
  struct CursesColor *cc_over = over->curses_color;
 
  color_t fg = COLOR_DEFAULT;
  color_t bg = COLOR_DEFAULT;
 
  if (cc_over)
  {
    fg = cc_over->fg;
    bg = cc_over->bg;
  }
 
  if (cc_base)
  {
    if (fg == COLOR_DEFAULT)
      fg = cc_base->fg;
    if (bg == COLOR_DEFAULT)
      bg = cc_base->bg;
  }
 
  int attrs = base->attrs | over->attrs;
 
  struct AttrColor *ac = merged_colors_find(fg, bg, attrs);
  if (ac)
    return ac;
 
  ac = attr_color_new();
  ac->curses_color = curses_color_new(fg, bg);
  ac->attrs = attrs;
  ac->fg = (base->fg.color == COLOR_DEFAULT) ? over->fg : base->fg;
  ac->bg = (base->bg.color == COLOR_DEFAULT) ? over->bg : base->bg;
  TAILQ_INSERT_TAIL(&MergedColors, ac, entries);
 
  return ac;
}

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merged_colors_cleanup()

void merged_colors_cleanup

(

void

)

Free the list of Merged colours.

Definition at line 52 of file merged.c.

{
  struct AttrColor *ac = NULL;
  struct AttrColor *tmp = NULL;
 
  TAILQ_FOREACH_SAFE(ac, &MergedColors, entries, tmp)
  {
    TAILQ_REMOVE(&MergedColors, ac, entries);
    curses_color_free(&ac->curses_color);
    FREE(&ac);
  }
}

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merged_colors_init()

void merged_colors_init

(

void

)

Initialise the Merged colours.

Definition at line 44 of file merged.c.

{
  TAILQ_INIT(&MergedColors);
}

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