File: balloon-x.c

package info (click to toggle)
xemacs21 21.4.24-8
  • links: PTS
  • area: main
  • in suites: buster
  • size: 33,604 kB
  • sloc: ansic: 243,821; lisp: 94,071; cpp: 5,726; sh: 4,406; perl: 1,096; cs: 775; makefile: 761; python: 279; asm: 248; lex: 119; yacc: 95; sed: 22; csh: 9
file content (163 lines) | stat: -rw-r--r-- 3,572 bytes parent folder | download | duplicates (12)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
/*
   Copyright (c) 1997 Douglas Keller

This file is part of XEmacs.

XEmacs 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, or (at your option) any
later version.

XEmacs 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 XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */


#include <config.h>
#include "lisp.h"

#include "device.h"
#include "console-x.h"

#include "balloon_help.h"

/* #### start of hack */

static unsigned long
alloc_color (Display* dpy, const char* colorname, int light)
{
  Colormap cmap = DEVICE_X_COLORMAP (XDEVICE(Vdefault_x_device));
  unsigned long pixel = 0;
  XColor color;

  if (XParseColor(dpy, cmap, colorname, &color) && XAllocColor(dpy, cmap, &color))
    {
      pixel = color.pixel;
    }
  else
    {
      if (light)
	{
	  printf ("Warning: could not allocate color \"%s\", using \"white\"\n",
		  colorname);
	  pixel = alloc_color (dpy, "white", True);
	}
      else
	{
	  printf ("Warning: could not allocate color \"%s\", using \"black\"\n",
		  colorname);
	  pixel = alloc_color (dpy, "black", True);
	}
    }
  return pixel;
}

static XFontStruct *
open_font (Display* dpy, const char* font_name)
{
  XFontStruct* fontStruct = NULL;

  fontStruct = XLoadQueryFont (dpy, font_name ? font_name : "fixed");
  if (fontStruct == NULL)
    {
      printf ("Warning: could not load font \"%s\", using \"fixed\".\n", font_name);
      fontStruct = XLoadQueryFont (dpy, "fixed");
      assert (fontStruct != NULL);
    }
  return fontStruct;
}

static void
init (void)
{
  static int init_p = 0;

  if (!init_p)
    {
      Pixel fg, bg, shine, shadow;
      XFontStruct* font;
      Display *dpy = DEVICE_X_DISPLAY (XDEVICE (Vdefault_x_device));

      fg = alloc_color (dpy, "grey60", 1);
      bg = alloc_color (dpy, "black", 0);

      shine  = alloc_color (dpy, "grey80", 1);
      shadow = alloc_color (dpy, "grey40", 0);

      font = open_font (dpy, "-adobe-helvetica-medium-r-normal--12-*");

      balloon_help_create (dpy, bg, fg, shine, shadow, font);
      init_p = 1;
    }
}

/* #### end of hack */

DEFUN ("show-balloon-help", Fshow_balloon_help, 1, 1, 0, /*
Show balloon help.
*/
       (string))
{
  char *p;
  CHECK_STRING (string);

  p = (char *) XSTRING_DATA (string);

  init ();

  balloon_help_show (p);

  return Qnil;
}

DEFUN ("hide-balloon-help", Fhide_balloon_help, 0, 0, 0, /*
Hide balloon help.
*/
      ())
{
  init ();

  balloon_help_hide ();

  return Qnil;
}

DEFUN ("balloon-help-move-to-pointer", Fballoon_help_move_to_pointer, 0, 0, 0, /*
Move the balloon help to the place where the pointer currently resides.
*/
      ())
{
  init ();

  balloon_help_move_to_pointer ();

  return Qnil;
}



/************************************************************************/
/*				initialization				*/
/************************************************************************/

void
syms_of_balloon_x (void)
{
  DEFSUBR (Fshow_balloon_help);
  DEFSUBR (Fhide_balloon_help);
  DEFSUBR (Fballoon_help_move_to_pointer);
}

void
vars_of_balloon_x (void)
{
  Fprovide (intern ("c-balloon-help"));
}