curses.c File Reference

Curses Colour. More...

#include "config.h"
#include <stdbool.h>
#include <stddef.h>
#include "mutt/lib.h"
#include "core/lib.h"
#include "gui/lib.h"
#include "color.h"
#include "curses2.h"
#include "debug.h"
#include "module_data.h"

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Functions
void	curses_colors_init (struct CursesColorList *curses_colors, int *num_curses_colors)
	Initialise the Curses colours.
struct CursesColor *	curses_colors_find (color_t fg, color_t bg)
	Find a Curses colour by foreground/background.
static int	curses_color_init (color_t fg, color_t bg)
	Initialise a new Curses colour.
void	curses_color_free (struct CursesColor **ptr)
	Free a CursesColor.
struct CursesColor *	curses_color_new (color_t fg, color_t bg)
	Create a new CursesColor.

Detailed Description

Curses Colour.

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 curses.c.

Function Documentation

curses_colors_init()

void curses_colors_init	(	struct CursesColorList *	curses_colors,
		int *	num_curses_colors )

Initialise the Curses colours.

Parameters

curses_colors	List of Curses colours
num_curses_colors	Pointer to the count of Curses colours

Definition at line 45 of file curses.c.

{
  color_debug(LL_DEBUG5, "init CursesColors\n");
  TAILQ_INIT(curses_colors);
  *num_curses_colors = 0;
}

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curses_colors_find()

struct CursesColor * curses_colors_find	(	color_t	fg,
		color_t	bg )

Find a Curses colour by foreground/background.

Parameters

fg	Foreground colour
bg	Background colour

Return values

ptr	Curses colour

Definition at line 58 of file curses.c.

{
  struct ColorModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_COLOR);
  struct CursesColor *cc = NULL;
  TAILQ_FOREACH(cc, &mod_data->curses_colors, entries)
  {
    if ((cc->fg == fg) && (cc->bg == bg))
    {
      curses_color_dump(cc, "find");
      return cc;
    }
  }
 
  return NULL;
}

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curses_color_init()

static int curses_color_init ( color_t fg, color_t bg )

static

Initialise a new Curses colour.

Parameters

fg	Foreground colour
bg	Background colour

Return values

num	Index of Curses colour

Definition at line 80 of file curses.c.

{
  struct ColorModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_COLOR);
  color_debug(LL_DEBUG5, "find lowest index\n");
  int index = 16;
  struct CursesColor *cc = NULL;
  TAILQ_FOREACH(cc, &mod_data->curses_colors, entries)
  {
    if (cc->index == index)
      index++;
    else
      break;
  }
  color_debug(LL_DEBUG5, "lowest index = %d\n", index);
  if (index >= COLOR_PAIRS)
  {
    if (COLOR_PAIRS > 0)
    {
      static bool warned = false;
      if (!warned)
      {
        mutt_error(_("Too many colors: %d / %d"), index, COLOR_PAIRS);
        warned = true;
      }
    }
    return 0;
  }
 
#ifdef NEOMUTT_DIRECT_COLORS
  int rc = init_extended_pair(index, fg, bg);
  color_debug(LL_DEBUG5, "init_extended_pair(%d,%d,%d) -> %d\n", index, fg, bg, rc);
#else
  int rc = init_pair(index, fg, bg);
  color_debug(LL_DEBUG5, "init_pair(%d,%d,%d) -> %d\n", index, fg, bg, rc);
#endif
 
  return index;
}

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curses_color_free()

void curses_color_free

(

struct CursesColor **

ptr

)

Free a CursesColor.

Parameters

ptr	CursesColor to be freed

Definition at line 123 of file curses.c.

{
  if (!ptr || !*ptr)
    return;
 
  struct CursesColor *cc = *ptr;
 
  cc->ref_count--;
  if (cc->ref_count > 0)
  {
    curses_color_dump(cc, "curses rc--");
    *ptr = NULL;
    return;
  }
 
  curses_color_dump(cc, "curses free");
  struct ColorModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_COLOR);
  TAILQ_REMOVE(&mod_data->curses_colors, cc, entries);
  mod_data->num_curses_colors--;
  color_debug(LL_DEBUG5, "CursesColors: %d\n", mod_data->num_curses_colors);
  FREE(ptr);
}

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curses_color_new()

struct CursesColor * curses_color_new	(	color_t	fg,
		color_t	bg )

Create a new CursesColor.

Parameters

fg	Foreground colour
bg	Background colour

Return values

ptr	New CursesColor

If the colour already exists, this function will return a pointer to the object (and increase its ref-count).

Definition at line 155 of file curses.c.

{
  color_debug(LL_DEBUG5, "fg %d, bg %d\n", fg, bg);
  if ((fg == COLOR_DEFAULT) && (bg == COLOR_DEFAULT))
  {
    color_debug(LL_DEBUG5, "both unset\n");
    return NULL;
  }
 
  struct CursesColor *cc = curses_colors_find(fg, bg);
  if (cc)
  {
    cc->ref_count++;
    curses_color_dump(cc, "curses rc++");
    return cc;
  }
 
  color_debug(LL_DEBUG5, "new curses\n");
  int index = curses_color_init(fg, bg);
  if (index == 0)
    return NULL;
 
  struct ColorModuleData *mod_data = neomutt_get_module_data(NeoMutt, MODULE_ID_COLOR);
  struct CursesColor *cc_new = MUTT_MEM_CALLOC(1, struct CursesColor);
  mod_data->num_curses_colors++;
  color_debug(LL_DEBUG5, "CursesColor %p\n", (void *) cc_new);
  cc_new->fg = fg;
  cc_new->bg = bg;
  cc_new->ref_count = 1;
  cc_new->index = index;
 
  // insert curses colour
  TAILQ_FOREACH(cc, &mod_data->curses_colors, entries)
  {
    if (cc->index > index)
    {
      color_debug(LL_DEBUG5, "insert\n");
      TAILQ_INSERT_BEFORE(cc, cc_new, entries);
      goto done;
    }
  }
 
  TAILQ_INSERT_TAIL(&mod_data->curses_colors, cc_new, entries);
  color_debug(LL_DEBUG5, "tail\n");
 
done:
  curses_color_dump(cc_new, "curses new");
  color_debug(LL_DEBUG5, "CursesColors: %d\n", mod_data->num_curses_colors);
  return cc_new;
}

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