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1 ;;; events.el --- event functions.
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2
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3 ;;;; Copyright (C) 1996 Ben Wing.
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4
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5 ;; Maintainer:
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6 ;; Keywords: internal
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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16
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21 ;; along with XEmacs; see the file COPYING. If not, write to the
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22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 ;; Boston, MA 02111-1307, USA.
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24
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25 ;;; Synched up with: Not in FSF.
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26
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27 ;;; Code:
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28
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29
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30 (defun event-console (event)
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31 "Return the console that EVENT occurred on.
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32 This will be nil for some types of events (e.g. eval events)."
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33 (cdfw-console (event-channel event)))
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34
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35 (defun event-device (event)
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36 "Return the device that EVENT occurred on.
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37 This will be nil for some types of events (e.g. keyboard and eval events)."
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38 (dfw-device (event-channel event)))
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39
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40 (defun event-frame (event)
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41 "Return the frame that EVENT occurred on.
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42 This will be nil for some types of events (e.g. keyboard and eval events)."
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43 (fw-frame (event-channel event)))
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44
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45 (defun event-buffer (event)
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46 "Given a mouse-motion, button-press, or button-release event, return
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47 the buffer on which that event occurred. This will be nil for non-mouse
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48 events. If event-over-text-area-p is nil, this will also be nil."
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49 (let ((window (event-window event)))
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50 (and (windowp window) (window-buffer window))))
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51
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52 (defalias 'allocate-event 'make-event)
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53
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54 (defun key-press-event-p (obj)
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55 "True if OBJ is a key-press event object."
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56 (and (event-live-p obj) (eq 'key-press (event-type obj))))
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57
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58 (defun button-press-event-p (obj)
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59 "True if OBJ is a mouse-button-press event object."
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60 (and (event-live-p obj) (eq 'button-press (event-type obj))))
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61
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62 (defun button-release-event-p (obj)
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63 "True if OBJ is a mouse-button-release event object."
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64 (and (event-live-p obj) (eq 'button-release (event-type obj))))
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65
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66 (defun button-event-p (obj)
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67 "True if OBJ is a button-press or button-release event object."
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68 (or (button-press-event-p obj) (button-release-event-p obj)))
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69
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70 (defun motion-event-p (obj)
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71 "True if OBJ is a mouse-motion event object."
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72 (and (event-live-p obj) (eq 'motion (event-type obj))))
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73
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74 (defun mouse-event-p (obj)
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75 "True if OBJ is a button-press, button-release, or mouse-motion event object."
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76 (or (button-event-p obj) (motion-event-p obj)))
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77
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78 (defun process-event-p (obj)
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79 "True if OBJ is a process-output event object."
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80 (and (event-live-p obj) (eq 'process (event-type obj))))
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81
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82 (defun timeout-event-p (obj)
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83 "True if OBJ is a timeout event object."
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84 (and (event-live-p obj) (eq 'timeout (event-type obj))))
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85
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86 (defun eval-event-p (obj)
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87 "True if OBJ is an eval event object."
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88 (and (event-live-p obj) (eq 'eval (event-type obj))))
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89
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90 (defun misc-user-event-p (obj)
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91 "True if OBJ is a misc-user event object.
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92 A misc-user event is a user event that is not a keypress or mouse click;
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93 normally this means a menu selection or scrollbar action."
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94 (and (event-live-p obj) (eq 'misc-user (event-type obj))))
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95
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96 ;; You could just as easily use event-glyph but we include this for
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97 ;; consistency.
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98
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99 (defun event-over-glyph-p (event)
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100 "Given a mouse-motion, button-press, or button-release event, return
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101 t if the event is over a glyph. Otherwise, return nil."
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102 (not (null (event-glyph event))))
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103
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104 (defun keyboard-translate (&rest pairs)
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105 "Translate character or keysym FROM to TO at a low level.
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106 Multiple FROM-TO pairs may be specified.
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107
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108 See `keyboard-translate-table' for more information."
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109 (while pairs
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110 (puthash (car pairs) (car (cdr pairs)) keyboard-translate-table)
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111 (setq pairs (cdr (cdr pairs)))))
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112
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113 (put 'backspace 'ascii-character ?\b)
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114 (put 'delete 'ascii-character ?\177)
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115 (put 'tab 'ascii-character ?\t)
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116 (put 'linefeed 'ascii-character ?\n)
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117 (put 'clear 'ascii-character 12)
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118 (put 'return 'ascii-character ?\r)
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119 (put 'escape 'ascii-character ?\e)
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120 (put 'space 'ascii-character ? )
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121
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122 ;; Do the same voodoo for the keypad keys. I used to bind these to keyboard
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52
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123 ;; macros (for instance, kp-0 was bound to "0") so that they would track the
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124 ;; bindings of the corresponding keys by default, but that made the display
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125 ;; of M-x describe-bindings much harder to read, so now we'll just bind them
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126 ;; to self-insert by default. Not a big difference...
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127
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128 (put 'kp-0 'ascii-character ?0)
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129 (put 'kp-1 'ascii-character ?1)
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130 (put 'kp-2 'ascii-character ?2)
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131 (put 'kp-3 'ascii-character ?3)
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132 (put 'kp-4 'ascii-character ?4)
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133 (put 'kp-5 'ascii-character ?5)
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134 (put 'kp-6 'ascii-character ?6)
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135 (put 'kp-7 'ascii-character ?7)
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136 (put 'kp-8 'ascii-character ?8)
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137 (put 'kp-9 'ascii-character ?9)
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138
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52
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139 (put 'kp-space 'ascii-character ? )
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140 (put 'kp-tab 'ascii-character ?\t)
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141 (put 'kp-enter 'ascii-character ?\r)
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142 (put 'kp-equal 'ascii-character ?=)
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143 (put 'kp-multiply 'ascii-character ?*)
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144 (put 'kp-add 'ascii-character ?+)
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145 (put 'kp-separator 'ascii-character ?,)
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146 (put 'kp-subtract 'ascii-character ?-)
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147 (put 'kp-decimal 'ascii-character ?.)
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148 (put 'kp-divide 'ascii-character ?/)
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