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428
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1 /*
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2 Copyright (c) 1997 Douglas Keller
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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23
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24 #include <config.h>
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25 #include "lisp.h"
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26
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27 #include "device.h"
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28 #include "console-x.h"
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29
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30 #include "balloon_help.h"
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31
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440
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32 /* #### start of hack */
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428
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33
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34 static unsigned long
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442
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35 alloc_color (Display* dpy, const char* colorname, int light)
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428
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36 {
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37 Colormap cmap = DEVICE_X_COLORMAP (XDEVICE(Vdefault_x_device));
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38 unsigned long pixel = 0;
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39 XColor color;
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40
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41 if (XParseColor(dpy, cmap, colorname, &color) && XAllocColor(dpy, cmap, &color))
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42 {
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43 pixel = color.pixel;
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44 }
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45 else
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46 {
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47 if (light)
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48 {
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49 printf ("Warning: could not allocate color \"%s\", using \"white\"\n",
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50 colorname);
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51 pixel = alloc_color (dpy, "white", True);
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52 }
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53 else
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54 {
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55 printf ("Warning: could not allocate color \"%s\", using \"black\"\n",
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56 colorname);
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57 pixel = alloc_color (dpy, "black", True);
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58 }
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59 }
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60 return pixel;
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61 }
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62
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63 static XFontStruct *
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442
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64 open_font (Display* dpy, const char* font_name)
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428
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65 {
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66 XFontStruct* fontStruct = NULL;
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67
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68 fontStruct = XLoadQueryFont (dpy, font_name ? font_name : "fixed");
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69 if (fontStruct == NULL)
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70 {
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71 printf ("Warning: could not load font \"%s\", using \"fixed\".\n", font_name);
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72 fontStruct = XLoadQueryFont (dpy, "fixed");
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73 assert (fontStruct != NULL);
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74 }
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75 return fontStruct;
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76 }
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77
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78 static void
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79 init (void)
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80 {
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81 static int init_p = 0;
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82
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83 if (!init_p)
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84 {
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85 Pixel fg, bg, shine, shadow;
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86 XFontStruct* font;
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87 Display *dpy = DEVICE_X_DISPLAY (XDEVICE (Vdefault_x_device));
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88
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89 fg = alloc_color (dpy, "grey60", 1);
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90 bg = alloc_color (dpy, "black", 0);
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91
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92 shine = alloc_color (dpy, "grey80", 1);
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93 shadow = alloc_color (dpy, "grey40", 0);
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94
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95 font = open_font (dpy, "-adobe-helvetica-medium-r-normal--12-*");
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96
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97 balloon_help_create (dpy, bg, fg, shine, shadow, font);
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98 init_p = 1;
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99 }
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100 }
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101
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440
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102 /* #### end of hack */
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428
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103
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104 DEFUN ("show-balloon-help", Fshow_balloon_help, 1, 1, 0, /*
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105 Show balloon help.
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106 */
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107 (string))
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108 {
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109 char *p;
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110 CHECK_STRING (string);
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111
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112 p = (char *) XSTRING_DATA (string);
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113
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114 init ();
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115
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116 balloon_help_show (p);
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117
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118 return Qnil;
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119 }
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120
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121 DEFUN ("hide-balloon-help", Fhide_balloon_help, 0, 0, 0, /*
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122 Hide balloon help.
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123 */
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124 ())
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125 {
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126 init ();
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127
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128 balloon_help_hide ();
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129
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130 return Qnil;
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131 }
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132
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133 DEFUN ("balloon-help-move-to-pointer", Fballoon_help_move_to_pointer, 0, 0, 0, /*
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134 Move the balloon help to the place where the pointer currently resides.
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135 */
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136 ())
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137 {
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138 init ();
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139
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140 balloon_help_move_to_pointer ();
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141
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142 return Qnil;
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143 }
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144
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145
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146
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147 /************************************************************************/
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148 /* initialization */
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149 /************************************************************************/
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150
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151 void
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152 syms_of_balloon_x (void)
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153 {
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154 DEFSUBR (Fshow_balloon_help);
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155 DEFSUBR (Fhide_balloon_help);
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156 DEFSUBR (Fballoon_help_move_to_pointer);
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157 }
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158
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159 void
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160 vars_of_balloon_x (void)
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161 {
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162 Fprovide (intern ("c-balloon-help"));
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163 }
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