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428
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1 ;;; glyphs.el --- Lisp interface to C glyphs
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2
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3 ;; Copyright (C) 1994, 1997 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995, 1996, 2000, 2005 Ben Wing.
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5
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6 ;; Author: Chuck Thompson <cthomp@cs.uiuc.edu>, Ben Wing <ben@xemacs.org>
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7 ;; Maintainer: XEmacs Development Team
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8 ;; Keywords: extensions, internal, dumped
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify it
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13 ;; under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2, or (at your option)
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15 ;; any later version.
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16
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17 ;; XEmacs is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; see the file COPYING. If not, write to the
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24 ;; Free Software Foundation, 59 Temple Place - Suite 330,
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25 ;; Boston, MA 02111-1307, USA.
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26
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27 ;;; Synched up with: Not in FSF.
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28
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442
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29 ;;; Authorship:
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30
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31 ;; Prototype created 1995 by Chuck Thompson.
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32 ;; Completely rewritten by Ben Wing, 1995.
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33 ;; Various cleanups (esp. doc strings) by Ben Wing, May 2000.
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34
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428
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35 ;;; Commentary:
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36
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37 ;; This file is dumped with XEmacs.
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38
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39 ;;; Code:
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40
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442
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41 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; image specifiers
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42
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43 (defun make-image-specifier (spec-list)
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44 "Return a new `image' specifier object with the specification list SPEC-LIST.
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45 SPEC-LIST can be a list of specifications (each of which is a cons of a
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46 locale and a list of instantiators), a single instantiator, or a list
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47 of instantiators. See `make-specifier' for more information about
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48 specifiers.
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49
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50 The main purpose of this doc string is to describe the possible formats for
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51 image instantiators, as given as an argument to `make-glyph' or
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52 `set-glyph-image'.
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53
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54 An image instantiator should be a string or a vector of the form
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55
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56 [FORMAT :KEYWORD VALUE ...]
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57
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58 i.e. a format symbol followed by zero or more alternating keyword-value
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59 pairs. The vector form of an image instantiator explicitly specifies the
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60 format of the image and other relevant properties. The string form
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61 specifies only a filename or gives inline data of an unspecified format,
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62 and XEmacs must guess the actual format. Once it has done this, it
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63 internally converts the instantiator into the vector format. This is
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64 described in more detail below.
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65
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66 Following is a list of the possible values for FORMAT. After each
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67 description, the allowable keywords for the format are listed in brackets,
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68 followed by the possible image instance types that can be generated from
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69 this format. (Image instance types will be discussed below.)
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70
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71 `nothing'
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72 Don't display anything; no keywords are valid for this.
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73 [] (nothing)
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74 `string'
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75 Display this image as a text string. Support for instantiating as
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76 `mono-pixmap' and `color-pixmap' should probably be added.
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77 [:data] (text)
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78 `formatted-string'
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79 Display this image as a text string, with replaceable fields.
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80 Not currently implemented -- it's treated like `string'.
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81 [:data] (text)
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82 `gif'
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83 A GIF87 or GIF89 image; only if GIF support was compiled into this
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84 XEmacs. NOTE: Only the first frame of animated gifs will be displayed.
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85 [:data, :file] (color-pixmap, pointer)
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86 `jpeg'
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87 A JPEG image; only if JPEG support was compiled into this XEmacs.
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88 [:data, :file] (color-pixmap, pointer)
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89 `png'
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90 A PNG image; only if PNG support was compiled into this XEmacs.
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91 [:data, :file] (color-pixmap, pointer)
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92 `tiff'
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93 A TIFF image; only if TIFF support was compiled into this XEmacs.
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94 [:data, :file] (color-pixmap, pointer)
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95 `bmp'
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96 A MS Windows BMP image; only if MS Windows support was compiled into
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97 this XEmacs.
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98 [:data, :file] (color-pixmap, pointer)
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99 `xbm'
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100 An X bitmap; exists if any window-system support was compiled into this
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101 XEmacs.
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102 [:data, :file, :foreground, :background, :mask-data, :mask-file,
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103 :hotspot-x, :hotspot-y] (mono-pixmap, color-pixmap, pointer)
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104 `xpm'
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105 An XPM pixmap; only if XPM support was compiled into this XEmacs.
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106 [:data, :file, :color-symbols] (mono-pixmap, color-pixmap, pointer)
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107 `xface'
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108 An X-Face bitmap, used to encode people's faces in e-mail messages;
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109 only if X-Face support was compiled into this XEmacs.
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110 [:data, :file, :foreground, :background, :mask-data, :mask-file,
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111 :hotspot-x, :hotspot-y] (mono-pixmap, color-pixmap, pointer)
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112 `cursor-font'
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113 X and GTK only. One of the standard cursor-font names, such as \"watch\"
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114 or \"right_ptr\" under X. Under X, this is, more specifically, any
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115 of the standard cursor names from appendix B of the Xlib manual
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116 [also known as the file <X11/cursorfont.h>] minus the XC_ prefix.
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117 On other window systems, the valid names will be specific to the
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118 type of window system.
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119 [:data, :foreground, :background] (pointer)
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120 `mswindows-resource'
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121 An MS Windows pointer resource. Specifies a resource to retrieve
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122 directly from the system (an OEM resource) or from a file, particularly
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123 an executable file. If the resource is to be retrieved from a file, use
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124 :file and optionally :resource-id. Otherwise use :resource-id. Always
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125 specify :resource-type to specify the type (cursor, bitmap or icon) of
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126 the resource. Possible values for :resource-id are listed below.
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127 [:file, :resource-type, :resource-id] (pointer, color-pixmap)
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128 `font'
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129 A glyph from a font; i.e. the name of a font, and glyph index into it
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130 of the form \"FONT fontname index [[mask-font] mask-index]\".
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131 Currently can only be instantiated as `pointer', although this should
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132 probably be fixed.
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133 [:data, :foreground, :background] (pointer)
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134 `subwindow'
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135 An embedded windowing system window.
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136 [:pixel-width, :pixel-height] (subwindow)
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137 `button'
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138 A button widget; either a push button, radio button or toggle button.
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139 [WIDGET-KEYWORDS, GUI-KEYWORDS, :image] (widget)
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140 `combo-box'
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141 A drop list of selectable items in a widget, for editing text.
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142 [GUI-KEYWORDS, :width, :height, :pixel-width, :face, :items] (widget)
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143 `edit-field'
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144 A text editing widget.
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145 [WIDGET-KEYWORDS, GUI-KEYWORDS] (widget)
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146 `label'
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147 A static, text-only, widget; for displaying text.
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148 [WIDGET-KEYWORDS, :descriptor] (widget)
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149 `layout'
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150 A widget for controlling the positioning of children underneath it.
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151 Through the use of nested layouts, a widget hierarchy can be created
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152 which can have the appearance of any standard dialog box or similar
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153 arrangement; all of this is counted as one \"glyph\" and could appear
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154 in many of the places that expect a single glyph.
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155 [WIDGET-KEYWORDS, GUI-KEYWORDS, :orientation, :justify, :vertically-justify,
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156 :horizontally-justify, :border, :margin-width, :items] (widget)
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157 `native-layout'
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158 The native version of a layout widget. #### Document me better!
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159 [WIDGET-KEYWORDS, GUI-KEYWORDS] (widget)
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160 `progress-gauge'
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161 A sliding widget, for showing progress.
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162 [WIDGET-KEYWORDS, GUI-KEYWORDS, :value] (widget)
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163 `tab-control'
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164 A tab widget; a series of user selectable tabs.
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165 [WIDGET-KEYWORDS, GUI-KEYWORDS, :orientation, :items] (widget)
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166 `tree-view'
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167 A folding widget.
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168 [WIDGET-KEYWORDS, GUI-KEYWORDS, :items] (widget)
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169 `scrollbar'
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170 A scrollbar widget.
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171 [GUI-KEYWORDS, :pixel-width, :face, :items] (widget)
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172 `autodetect'
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173 XEmacs tries to guess what format the data is in. If X support
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174 exists, the data string will be checked to see if it names a filename.
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175 If so, and this filename contains XBM or XPM data, the appropriate
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176 sort of pixmap or pointer will be created. [This includes picking up
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177 any specified hotspot or associated mask file.] Otherwise, if `pointer'
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178 is one of the allowable image-instance types and the string names a
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179 valid cursor-font name, the image will be created as a pointer.
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180 Otherwise, the image will be displayed as text. If no X support
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181 exists, the image will always be displayed as text.
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182 [:data] (mono-pixmap, color-pixmap, pointer, text)
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183 `inherit'
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184 Inherit from the background-pixmap property of a face.
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185 [:face] (mono-pixmap)
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186
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187 The valid keywords are:
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188
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189 :data
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190 Inline data. For most formats above, this should be a string. For
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191 XBM images, this should be a list of three elements: width, height, and
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192 a string of bit data. This keyword is valid for all of the bitmap/pixmap
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193 formats, as well as `string', `formatted-string', `font', `cursor-font',
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194 and `autodetect'.
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195 :file
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196 Data is contained in a file. The value is the name of this file.
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197 If both :data and :file are specified, the image is created from
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198 what is specified in :data and the string in :file becomes the
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199 value of the `image-instance-file-name' function when applied to
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200 the resulting image-instance. This keyword is valid for all of the
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201 bitmap/pixmap formats as well as `mswindows-resource'.
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202 :foreground
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203 :background
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204 For `xbm', `xface', `cursor-font', `widget' and `font'. These keywords
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205 allow you to explicitly specify foreground and background colors.
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206 The argument should be anything acceptable to `make-color-instance'.
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207 This will cause what would be a `mono-pixmap' to instead be colorized
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208 as a two-color color-pixmap, and specifies the foreground and/or
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209 background colors for a pointer instead of black and white.
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210 :mask-data
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211 For `xbm' and `xface'. This specifies a mask to be used with the
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212 bitmap. The format is a list of width, height, and bits, like for
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213 :data.
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214 :mask-file
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215 For `xbm' and `xface'. This specifies a file containing the mask data.
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216 If neither a mask file nor inline mask data is given for an XBM image,
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217 and the XBM image comes from a file, XEmacs will look for a mask file
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218 with the same name as the image file but with \"Mask\" or \"msk\"
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219 appended. For example, if you specify the XBM file \"left_ptr\"
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220 [usually located in \"/usr/include/X11/bitmaps\"], the associated
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221 mask file \"left_ptrmsk\" will automatically be picked up.
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222 :hotspot-x
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223 :hotspot-y
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224 For `xbm' and `xface'. These keywords specify a hotspot if the image
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225 is instantiated as a `pointer'. Note that if the XBM image file
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226 specifies a hotspot, it will automatically be picked up if no
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227 explicit hotspot is given.
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228 :color-symbols
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229 Only for `xpm'. This specifies an alist that maps strings
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230 that specify symbolic color names to the actual color to be used
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231 for that symbolic color (in the form of a string or a color-specifier
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232 object). If this is not specified, the contents of `xpm-color-symbols'
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233 are used to generate the alist.
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234 :resource-id
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235 Only for `mswindows-resource'. This must be either an integer (which
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236 directly specifies a resource number) or a string. Valid strings are
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237
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238 -- For bitmaps:
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239
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240 \"close\", \"uparrow\", \"dnarrow\", \"rgarrow\", \"lfarrow\",
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241 \"reduce\", \"zoom\", \"restore\", \"reduced\", \"zoomd\",
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242 \"restored\", \"uparrowd\", \"dnarrowd\", \"rgarrowd\", \"lfarrowd\",
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243 \"mnarrow\", \"combo\", \"uparrowi\", \"dnarrowi\", \"rgarrowi\",
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244 \"lfarrowi\", \"size\", \"btsize\", \"check\", \"checkboxes\", and
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245 \"btncorners\".
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246
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247 -- For pointers:
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248
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249 \"normal\", \"ibeam\", \"wait\", \"cross\", \"up\", \"sizenwse\",
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250 \"sizenesw\", \"sizewe\", \"sizens\", \"sizeall\", and \"no\".
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251
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252 -- For icons:
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253
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254 \"sample\", \"hand\", \"ques\", \"bang\", \"note\", and \"winlogo\".
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255 :resource-type
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256 Only for `mswindows-resource'. This must be a symbol, either `cursor'
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257 (i.e. pointer), `icon', or `bitmap', specifying the type of resource to
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258 be retrieved.
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259 :face
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260 Only for `inherit'. This specifies the face to inherit from.
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261 For widgets this also specifies the face to use for display. It defaults
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262 to gui-element-face.
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263 :pixel-width, :pixel-height
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264 Width and height of element, in pixels. For `subwindow', the values
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265 must be integers. For widgets, the values can be integers or
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266 expressions that evaluate to integers.
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267
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268 \[WIDGET-KEYWORDS] stands for the standard keywords accepted by widgets:
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269 These are `:selected', `:active', `:suffix', `:keys', `:style',
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270 `:filter', `:config', `:included', `:key-sequence', `:accelerator',
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271 `:label', `:callback', `:initial-focus', and `:descriptor'.
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272 #### Document me.
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273
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274 \[GUI-KEYWORDS] stands for keywords accepted by many widgets.
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275 These are `:width', `:height', `:pixel-width', `:pixel-height', and `:face'.
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276 #### Document me.
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277
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278 If instead of a vector, the instantiator is a string, it will be
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279 converted into a vector by looking it up according to the specs in the
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280 `console-type-image-conversion-list' (q.v.) for the console type of
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281 the domain (usually a window; sometimes a frame or device) over which
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282 the image is being instantiated.
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283
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284 If the instantiator specifies data from a file, the data will be read
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285 in at the time that the instantiator is added to the image (which may
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286 be well before when the image is actually displayed), and the
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287 instantiator will be converted into one of the inline-data forms, with
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288 the filename retained using a :file keyword. This implies that the
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289 file must exist when the instantiator is added to the image, but does
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290 not need to exist at any other time (e.g. it may safely be a temporary
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291 file).
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292
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293 NOTE: In practice, you rarely, if ever, need to actually
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294 create an image specifier! (The function `make-image-specifier' exists
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295 mainly for completeness.) Pretty much the only use for image specifiers is
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296 to control how glyphs are displayed, and the image specifier associated
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297 with a glyph (the `image' property of a glyph) is created automatically
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298 when a glyph is created (see `make-glyph') and need not \(and cannot, for
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299 that matter) ever be changed. In fact, the design decision to create a
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300 separate image specifier type, rather than make glyphs themselves be
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301 specifiers, is debatable -- the other properties of glyphs are rarely used
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302 and could conceivably have been incorporated into the glyph's instantiator.
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303 The rarely used glyph types (buffer, pointer, icon) could also have been
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304 incorporated into the instantiator.
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305
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306 An image specifier is used for images (pixmaps, widgets and the like). It
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307 is used to describe the actual image in a glyph. It is instantiated \(see
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308 `specifier-instance') as an image-instance. Note that \"image\" as used in
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309 XEmacs does not actually refer to what the term \"image\" normally means (a
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310 picture, e.g. in .GIF or .JPG format, and called a \"pixmap\" in XEmacs),
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311 but includes all types of graphical elements, including pixmaps, widgets
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312 \(buttons, sliders, text fields, etc.) and even strings of text.
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313
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314 There is an important distinction to be made between image instantiators
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315 and image instances, and \"image instantiator formats\" and \"image
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316 instance types\", analogous to the distinction between source and
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317 destination. An image instantiator describes the source data for an image.
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318 An image instance encapsulates the resulting window-system object used to
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319 display the image. Image instantiator formats are the formats of the
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320 source: This includes familiar and less-familiar graphics formats such as
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321 `gif', `jpeg', `png' and `xpm'; widget types such as `button', `edit-field'
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322 and `combo-box'; and other beasts such as `string' (plain text, which could
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323 potentially behave like text when placed in a buffer, such as wrapping),
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324 `font' (a single character from a particular font, specified by the index
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325 into the font), etc. Image instance types are the (destination) types of
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326 the resulting image instance. Different image instance types correspond to
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327 fundamentally different appearance and behaviors for the resulting image,
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328 specifically:
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329
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330 -- `color-pixmap' (a color image);
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331 -- `mono-pixmap' (a \"monochrome\" image, technically a two-color image
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332 that comes in two unspecified shades \"foreground\" and \"background\",
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333 determined from the face [see `make-face'] of the glyph or surrounding
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334 text);
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335 -- `text' (a string of text appearing somewhere in a buffer's text or
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336 margins, which has an unspecified foreground, background, and font
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337 derived from the surrounding text or other external property and which
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338 behaves in many respects like an image but can wrap across the end of a
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|
|
339 line to the beginning of the next);
|
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|
340 -- `pointer' (the mouse pointer for a window; this is a combination of a
|
|
|
341 rectangular pixmap image, a monochrome mask that specifies the
|
|
|
342 transparency of the image [i.e. in which places the underlying screen
|
|
|
343 image can show through, and how much of it], and a \"hotspot\" that
|
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|
344 indicates which pixel in the pointer's image is considered the actual
|
|
|
345 pointer location -- for example, this will be located near the tip of
|
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|
346 an arrow, in the middle of a crosshairs, somewhere along an i-beam, etc.);
|
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|
347 -- `widget' (a window-system object or \"widget\" that interacts with the
|
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348 user, such as a button, edit-field or combo-box);
|
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|
349 -- `subwindow' (a rectangular area that another program can draw into);
|
|
|
350 -- `nothing' (no display).
|
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351
|
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|
352 There is not a one-to-one mapping between source (image instantiator)
|
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|
353 formats and destination (image instance) types. For example, the source
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|
354 format `xpm' can generate the image instance types `color-pixmap',
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355 `mono-pixmap', or `pointer', and the image instance type `color-pixmap' can
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|
356 be generated by any of `gif', `jpeg', `png', `tiff', `xpm', `xbm' and
|
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357 `xface'.
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358
|
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|
359 In general, the user or programmer specifies the image instantiator format,
|
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|
360 while the appropriate image instance type is determined automatically by
|
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|
361 XEmacs from the image instantiator format, from the data in the
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|
362 instantiator and from the particular situation the image (and the glyph
|
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|
363 that holds it) is being used in. (However, it's possible to explicitly
|
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364 create image instances and control their types; see `make-image-instance'.)
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365 For example, a glyph used to specify the shape of a mouse pointer can only
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366 result in `pointer'-type image instances, and a glyph used for an icon can
|
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367 only result in `color-pixmap' image instances. A glyph used in a buffer
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368 can potentially result in any image instance type except for `pointer', but
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369 particular instantiator formats have only a limited set of image instance
|
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370 types they will support. Here is an example of how the image instance type
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371 for an `xpm' instantiator (which can potentially support `color-pixmap',
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372 `mono-pixmap', or `pointer') is determined:
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373
|
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374 1. If the glyph is being used for a mouse pointer (hence its `glyph-type'
|
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|
375 is `pointer'), it can be instantiated only a `pointer'-type image instance.
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376 2. If the glyph is being used for an icon (hence its `glyph-type' is `icon'),
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|
377 it can be instantiated only a `color-pixmap'-type image instance.
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|
378 3. Otherwise, the glyph is being used somewhere inside a frame (`glyph-type'
|
|
|
379 of `buffer') and any image instance type except `pointer' can be
|
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|
380 supported. In this case, this means `color-pixmap' or `mono-pixmap'.
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|
381 Which one will result depends on the particular data being processed,
|
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|
382 since XPM images can specify whether they are color or mono.
|
|
|
383
|
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|
384 Note again that \"mono\" does *NOT* simply mean \"an image with two
|
|
|
385 colors\". The latter image has two prespecified colors, e.g. red and blue
|
|
|
386 or black and white, and will always appear with those colors, no matter
|
|
|
387 what the context. A mono image has two *unspecified* colors, symbolically
|
|
|
388 named \"foreground\" and \"background\", and the actual values for those
|
|
|
389 colors depends on context. A mono pixmap displayed among text will take
|
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|
390 its foreground and background from that of the text and hence blend in
|
|
|
391 nicely; a two-color color pixmap won't do that.
|
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|
392
|
|
|
393 Note also that `color-pixmap' image instances can be generated from the
|
|
|
394 supported pixmap formats that are inherently mono (i.e. `xbm' and `xface')
|
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|
395 by specifying :foreground and :background values.
|
|
|
396
|
|
|
397 A table of the various image instantiator formats and the possible
|
|
|
398 destination (image instance) types that can be generated from them is as
|
|
|
399 follows:
|
|
|
400
|
|
|
401
|
|
|
402 color-pixmap mono-pixmap text pointer widget subwindow noth.
|
|
|
403 -------------------------------------------------------------------------------
|
|
|
404 nothing +
|
|
|
405 string +
|
|
|
406 formatted-string +
|
|
|
407 xbm + + +
|
|
|
408 xpm + + +
|
|
|
409 xface + + +
|
|
|
410 gif + +
|
|
|
411 jpeg + +
|
|
|
412 png + +
|
|
|
413 tiff + +
|
|
|
414 bmp + +
|
|
|
415 cursor-font +
|
|
|
416 mswindows-resource + +
|
|
|
417 font +
|
|
|
418 subwindow +
|
|
|
419 button +
|
|
|
420 combo-box +
|
|
|
421 edit-field +
|
|
|
422 label +
|
|
|
423 layout +
|
|
|
424 native-layout +
|
|
|
425 progress-gauge +
|
|
|
426 tab-control +
|
|
|
427 tree-view +
|
|
|
428 scrollbar +
|
|
|
429 autodetect + + + +
|
|
|
430 inherit +
|
|
|
431
|
|
|
432 See `make-image-instance' for a more detailed discussion of image
|
|
|
433 instance types."
|
|
428
|
434 (make-specifier-and-init 'image spec-list))
|
|
|
435
|
|
|
436 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; glyphs
|
|
|
437
|
|
|
438 (defconst built-in-glyph-specifiers
|
|
|
439 '(image contrib-p baseline)
|
|
442
|
440 "A list of the built-in glyph properties that are specifiers.")
|
|
428
|
441
|
|
|
442 (defun glyph-property (glyph property &optional locale)
|
|
|
443 "Return GLYPH's value of PROPERTY in LOCALE.
|
|
|
444
|
|
|
445 If LOCALE is omitted, the GLYPH's actual value for PROPERTY will be
|
|
|
446 returned. For built-in properties, this will be a specifier object
|
|
|
447 of a type appropriate to the property (e.g. a font or color
|
|
|
448 specifier). For other properties, this could be anything.
|
|
|
449
|
|
|
450 If LOCALE is supplied, then instead of returning the actual value,
|
|
|
451 the specification(s) for the given locale or locale type will
|
|
|
452 be returned. This will only work if the actual value of
|
|
|
453 PROPERTY is a specifier (this will always be the case for built-in
|
|
|
454 properties, but not or not may apply to user-defined properties).
|
|
|
455 If the actual value of PROPERTY is not a specifier, this value
|
|
|
456 will simply be returned regardless of LOCALE.
|
|
|
457
|
|
|
458 The return value will be a list of instantiators (e.g. strings
|
|
|
459 specifying a font or color name), or a list of specifications, each
|
|
|
460 of which is a cons of a locale and a list of instantiators.
|
|
|
461 Specifically, if LOCALE is a particular locale (a buffer, window,
|
|
2607
|
462 frame, device, or `global'), a list of instantiators for that locale
|
|
428
|
463 will be returned. Otherwise, if LOCALE is a locale type (one of
|
|
2607
|
464 the symbols `buffer', `window', `frame', `device', `device-class', or
|
|
|
465 `device-type'), the specifications for all locales of that type will
|
|
|
466 be returned. Finally, if LOCALE is `all', the specifications for all
|
|
428
|
467 locales of all types will be returned.
|
|
|
468
|
|
|
469 The specifications in a specifier determine what the value of
|
|
|
470 PROPERTY will be in a particular \"domain\" or set of circumstances,
|
|
|
471 which is typically a particular Emacs window along with the buffer
|
|
|
472 it contains and the frame and device it lies within. The value
|
|
|
473 is derived from the instantiator associated with the most specific
|
|
2607
|
474 locale (in the order buffer, window, frame, device, and `global')
|
|
428
|
475 that matches the domain in question. In other words, given a domain
|
|
|
476 (i.e. an Emacs window, usually), the specifier for PROPERTY will first
|
|
|
477 be searched for a specification whose locale is the buffer contained
|
|
|
478 within that window; then for a specification whose locale is the window
|
|
|
479 itself; then for a specification whose locale is the frame that the
|
|
|
480 window is contained within; etc. The first instantiator that is
|
|
|
481 valid for the domain (usually this means that the instantiator is
|
|
|
482 recognized by the device [i.e. the X server or TTY device] that the
|
|
|
483 domain is on. The function `glyph-property-instance' actually does
|
|
|
484 all this, and is used to determine how to display the glyph.
|
|
|
485
|
|
|
486 See `set-glyph-property' for the built-in property-names."
|
|
|
487 (check-argument-type 'glyphp glyph)
|
|
|
488 (let ((value (get glyph property)))
|
|
|
489 (if (and locale
|
|
|
490 (or (memq property built-in-glyph-specifiers)
|
|
|
491 (specifierp value)))
|
|
|
492 (setq value (specifier-specs value locale)))
|
|
|
493 value))
|
|
|
494
|
|
|
495 (defun convert-glyph-property-into-specifier (glyph property)
|
|
|
496 "Convert PROPERTY on GLYPH into a specifier, if it's not already."
|
|
|
497 (check-argument-type 'glyphp glyph)
|
|
|
498 (let ((specifier (get glyph property)))
|
|
|
499 ;; if a user-property does not have a specifier but a
|
|
|
500 ;; locale was specified, put a specifier there.
|
|
|
501 ;; If there was already a value there, convert it to a
|
|
2607
|
502 ;; specifier with the value as its `global' instantiator.
|
|
428
|
503 (if (not (specifierp specifier))
|
|
|
504 (let ((new-specifier (make-specifier 'generic)))
|
|
|
505 (if (or (not (null specifier))
|
|
|
506 ;; make sure the nil returned from `get' wasn't
|
|
|
507 ;; actually the value of the property
|
|
|
508 (null (get glyph property t)))
|
|
|
509 (add-spec-to-specifier new-specifier specifier))
|
|
|
510 (setq specifier new-specifier)
|
|
|
511 (put glyph property specifier)))))
|
|
|
512
|
|
|
513 (defun glyph-property-instance (glyph property
|
|
|
514 &optional domain default no-fallback)
|
|
|
515 "Return the instance of GLYPH's PROPERTY in the specified DOMAIN.
|
|
|
516
|
|
|
517 Under most circumstances, DOMAIN will be a particular window,
|
|
|
518 and the returned instance describes how the specified property
|
|
|
519 actually is displayed for that window and the particular buffer
|
|
|
520 in it. Note that this may not be the same as how the property
|
|
|
521 appears when the buffer is displayed in a different window or
|
|
|
522 frame, or how the property appears in the same window if you
|
|
|
523 switch to another buffer in that window; and in those cases,
|
|
|
524 the returned instance would be different.
|
|
|
525
|
|
|
526 DOMAIN defaults to the selected window if omitted.
|
|
|
527
|
|
|
528 DOMAIN can be a frame or device, instead of a window. The value
|
|
|
529 returned for a such a domain is used in special circumstances
|
|
|
530 when a more specific domain does not apply; for example, a frame
|
|
|
531 value might be used for coloring a toolbar, which is conceptually
|
|
|
532 attached to a frame rather than a particular window. The value
|
|
|
533 is also useful in determining what the value would be for a
|
|
|
534 particular window within the frame or device, if it is not
|
|
|
535 overridden by a more specific specification.
|
|
|
536
|
|
|
537 If PROPERTY does not name a built-in property, its value will
|
|
|
538 simply be returned unless it is a specifier object, in which case
|
|
|
539 it will be instanced using `specifier-instance'.
|
|
|
540
|
|
|
541 Optional arguments DEFAULT and NO-FALLBACK are the same as in
|
|
|
542 `specifier-instance'."
|
|
|
543 (check-argument-type 'glyphp glyph)
|
|
|
544 (let ((value (get glyph property)))
|
|
|
545 (if (specifierp value)
|
|
|
546 (setq value (specifier-instance value domain default no-fallback)))
|
|
|
547 value))
|
|
|
548
|
|
|
549 (defun set-glyph-property (glyph property value &optional locale tag-set
|
|
|
550 how-to-add)
|
|
|
551 "Change a property of a GLYPH.
|
|
|
552
|
|
|
553 NOTE: If you want to remove a property from a glyph, use
|
|
|
554 `remove-glyph-property' rather than attempting to set a value of nil
|
|
|
555 for the property.
|
|
|
556
|
|
|
557 For built-in properties, the actual value of the property is a
|
|
|
558 specifier and you cannot change this; but you can change the
|
|
|
559 specifications within the specifier, and that is what this function
|
|
|
560 will do. For user-defined properties, you can use this function
|
|
|
561 to either change the actual value of the property or, if this value
|
|
|
562 is a specifier, change the specifications within it.
|
|
|
563
|
|
|
564 If PROPERTY is a built-in property, the specifications to be added to
|
|
|
565 this property can be supplied in many different ways:
|
|
|
566
|
|
|
567 -- If VALUE is a simple instantiator (e.g. a string naming a font or
|
|
|
568 color) or a list of instantiators, then the instantiator(s) will
|
|
|
569 be added as a specification of the property for the given LOCALE
|
|
2607
|
570 (which defaults to `global' if omitted).
|
|
428
|
571 -- If VALUE is a list of specifications (each of which is a cons of
|
|
|
572 a locale and a list of instantiators), then LOCALE must be nil
|
|
|
573 (it does not make sense to explicitly specify a locale in this
|
|
|
574 case), and specifications will be added as given.
|
|
|
575 -- If VALUE is a specifier (as would be returned by `glyph-property'
|
|
|
576 if no LOCALE argument is given), then some or all of the
|
|
|
577 specifications in the specifier will be added to the property.
|
|
|
578 In this case, the function is really equivalent to
|
|
|
579 `copy-specifier' and LOCALE has the same semantics (if it is
|
|
|
580 a particular locale, the specification for the locale will be
|
|
|
581 copied; if a locale type, specifications for all locales of
|
|
2607
|
582 that type will be copied; if nil or `all', then all
|
|
428
|
583 specifications will be copied).
|
|
|
584
|
|
2607
|
585 HOW-TO-ADD should be either nil or one of the symbols `prepend',
|
|
|
586 `append', `remove-tag-set-prepend', `remove-tag-set-append', `remove-locale',
|
|
|
587 `remove-locale-type', or `remove-all.' See `copy-specifier' and
|
|
428
|
588 `add-spec-to-specifier' for a description of what each of
|
|
|
589 these means. Most of the time, you do not need to worry about
|
|
|
590 this argument; the default behavior usually is fine.
|
|
|
591
|
|
|
592 In general, it is OK to pass an instance object (e.g. as returned
|
|
|
593 by `glyph-property-instance') as an instantiator in place of
|
|
|
594 an actual instantiator. In such a case, the instantiator used
|
|
|
595 to create that instance object will be used (for example, if
|
|
2607
|
596 you set a font-instance object as the value of the `font'
|
|
428
|
597 property, then the font name used to create that object will
|
|
|
598 be used instead). If some cases, however, doing this
|
|
|
599 conversion does not make sense, and this will be noted in
|
|
|
600 the documentation for particular types of instance objects.
|
|
|
601
|
|
|
602 If PROPERTY is not a built-in property, then this function will
|
|
|
603 simply set its value if LOCALE is nil. However, if LOCALE is
|
|
|
604 given, then this function will attempt to add VALUE as the
|
|
|
605 instantiator for the given LOCALE, using `add-spec-to-specifier'.
|
|
|
606 If the value of the property is not a specifier, it will
|
|
2607
|
607 automatically be converted into a `generic' specifier.
|
|
428
|
608
|
|
|
609
|
|
|
610 The following symbols have predefined meanings:
|
|
|
611
|
|
|
612 image The image used to display the glyph.
|
|
|
613
|
|
|
614 baseline Percent above baseline that glyph is to be
|
|
|
615 displayed.
|
|
|
616
|
|
|
617 contrib-p Whether the glyph contributes to the
|
|
|
618 height of the line it's on.
|
|
|
619
|
|
|
620 face Face of this glyph (*not* a specifier)."
|
|
|
621 (check-argument-type 'glyphp glyph)
|
|
|
622 (if (memq property built-in-glyph-specifiers)
|
|
|
623 (set-specifier (get glyph property) value locale tag-set how-to-add)
|
|
|
624
|
|
|
625 ;; This section adds user defined properties.
|
|
|
626 (if (not locale)
|
|
|
627 (put glyph property value)
|
|
|
628 (convert-glyph-property-into-specifier glyph property)
|
|
|
629 (add-spec-to-specifier (get glyph property) value locale tag-set
|
|
|
630 how-to-add)))
|
|
|
631 value)
|
|
|
632
|
|
|
633 (defun remove-glyph-property (glyph property &optional locale tag-set exact-p)
|
|
|
634 "Remove a property from a glyph.
|
|
|
635 For built-in properties, this is analogous to `remove-specifier'.
|
|
|
636 See `remove-specifier' for the meaning of the LOCALE, TAG-SET, and EXACT-P
|
|
|
637 arguments."
|
|
|
638 (or locale (setq locale 'all))
|
|
|
639 (if (memq property built-in-glyph-specifiers)
|
|
|
640 (remove-specifier (glyph-property glyph property) locale tag-set exact-p)
|
|
|
641 (if (eq locale 'all)
|
|
|
642 (remprop glyph property)
|
|
|
643 (convert-glyph-property-into-specifier glyph property)
|
|
|
644 (remove-specifier (glyph-property glyph property) locale tag-set
|
|
|
645 exact-p))))
|
|
|
646
|
|
|
647 (defun glyph-face (glyph)
|
|
|
648 "Return the face of GLYPH."
|
|
|
649 (glyph-property glyph 'face))
|
|
|
650
|
|
|
651 (defun set-glyph-face (glyph face)
|
|
|
652 "Change the face of GLYPH to FACE."
|
|
|
653 ; (interactive (glyph-interactive "face"))
|
|
|
654 (set-glyph-property glyph 'face face))
|
|
|
655
|
|
|
656 (defun glyph-image (glyph &optional locale)
|
|
|
657 "Return the image of GLYPH in LOCALE, or nil if it is unspecified.
|
|
|
658
|
|
|
659 LOCALE may be a locale (the instantiators for that particular locale
|
|
|
660 will be returned), a locale type (the specifications for all locales
|
|
2607
|
661 of that type will be returned), `all' (all specifications will be
|
|
428
|
662 returned), or nil (the actual specifier object will be returned).
|
|
|
663
|
|
|
664 See `glyph-property' for more information."
|
|
|
665 (glyph-property glyph 'image locale))
|
|
|
666
|
|
|
667 (defun glyph-image-instance (glyph &optional domain default no-fallback)
|
|
|
668 "Return the instance of GLYPH's image in DOMAIN.
|
|
|
669
|
|
|
670 Normally DOMAIN will be a window or nil (meaning the selected window),
|
|
|
671 and an instance object describing how the image appears in that
|
|
|
672 particular window and buffer will be returned.
|
|
|
673
|
|
|
674 See `glyph-property-instance' for more information."
|
|
|
675 (glyph-property-instance glyph 'image domain default no-fallback))
|
|
|
676
|
|
442
|
677 (defun glyph-image-property (glyph prop &optional domain default no-fallback)
|
|
|
678 "Return property PROP of the instance of GLYPH's image in DOMAIN.
|
|
|
679
|
|
|
680 Normally DOMAIN will be a window or nil (meaning the selected window).
|
|
|
681 The value returned is dependent on the image instance type."
|
|
|
682 (image-instance-property
|
|
|
683 (glyph-image-instance glyph domain default no-fallback) prop))
|
|
|
684
|
|
428
|
685 (defun set-glyph-image (glyph spec &optional locale tag-set how-to-add)
|
|
|
686 "Change the image of GLYPH in LOCALE.
|
|
|
687
|
|
|
688 SPEC should be an instantiator (a string or vector; see
|
|
442
|
689 `make-image-specifier' for a description of possible values here),
|
|
428
|
690 a list of (possibly tagged) instantiators, an alist of specifications
|
|
|
691 (each mapping a locale to an instantiator list), or an image specifier
|
|
|
692 object.
|
|
|
693
|
|
|
694 If SPEC is an alist, LOCALE must be omitted. If SPEC is a
|
|
2607
|
695 specifier object, LOCALE can be a locale, a locale type, `all',
|
|
428
|
696 or nil; see `copy-specifier' for its semantics. Otherwise LOCALE
|
|
|
697 specifies the locale under which the specified instantiator(s)
|
|
2607
|
698 will be added, and defaults to `global.'
|
|
428
|
699
|
|
|
700 See `set-glyph-property' for more information."
|
|
|
701 ; (interactive (glyph-interactive "image"))
|
|
|
702 (set-glyph-property glyph 'image spec locale tag-set how-to-add))
|
|
|
703
|
|
|
704 (defun glyph-contrib-p (glyph &optional locale)
|
|
|
705 "Return whether GLYPH contributes to its line height.
|
|
|
706
|
|
|
707 LOCALE may be a locale (the instantiators for that particular locale
|
|
|
708 will be returned), a locale type (the specifications for all locales
|
|
2607
|
709 of that type will be returned), `all' (all specifications will be
|
|
428
|
710 returned), or nil (the actual specifier object will be returned).
|
|
|
711
|
|
|
712 See `glyph-property' for more information."
|
|
|
713 (glyph-property glyph 'contrib-p locale))
|
|
|
714
|
|
|
715 (defun glyph-contrib-p-instance (glyph &optional domain default no-fallback)
|
|
2607
|
716 "Return the instance of GLYPH's `contrib-p' property in DOMAIN.
|
|
428
|
717
|
|
|
718 Normally DOMAIN will be a window or nil (meaning the selected window),
|
|
2607
|
719 and an instance object describing what the `contrib-p' property is in
|
|
428
|
720 that particular window and buffer will be returned.
|
|
|
721
|
|
|
722 See `glyph-property-instance' for more information."
|
|
|
723 (glyph-property-instance glyph 'contrib-p domain default no-fallback))
|
|
|
724
|
|
|
725 (defun set-glyph-contrib-p (glyph spec &optional locale tag-set how-to-add)
|
|
|
726 "Change the contrib-p property of GLYPH in LOCALE.
|
|
|
727
|
|
|
728 SPEC should be an instantiator (t or nil), a list of (possibly
|
|
|
729 tagged) instantiators, an alist of specifications (each mapping a
|
|
|
730 locale to an instantiator list), or a boolean specifier object.
|
|
|
731
|
|
|
732 If SPEC is an alist, LOCALE must be omitted. If SPEC is a
|
|
2607
|
733 specifier object, LOCALE can be a locale, a locale type, `all',
|
|
428
|
734 or nil; see `copy-specifier' for its semantics. Otherwise LOCALE
|
|
|
735 specifies the locale under which the specified instantiator(s)
|
|
2607
|
736 will be added, and defaults to `global.'
|
|
428
|
737
|
|
|
738 See `set-glyph-property' for more information."
|
|
|
739 ; (interactive (glyph-interactive "contrib-p"))
|
|
|
740 (set-glyph-property glyph 'contrib-p spec locale tag-set how-to-add))
|
|
|
741
|
|
|
742 (defun glyph-baseline (glyph &optional locale)
|
|
|
743 "Return the baseline of GLYPH in LOCALE, or nil if it is unspecified.
|
|
|
744
|
|
|
745 LOCALE may be a locale (the instantiators for that particular locale
|
|
|
746 will be returned), a locale type (the specifications for all locales
|
|
2607
|
747 of that type will be returned), `all' (all specifications will be
|
|
428
|
748 returned), or nil (the actual specifier object will be returned).
|
|
|
749
|
|
|
750 See `glyph-property' for more information."
|
|
|
751 (glyph-property glyph 'baseline locale))
|
|
|
752
|
|
|
753 (defun glyph-baseline-instance (glyph &optional domain default no-fallback)
|
|
|
754 "Return the instance of GLYPH's baseline in DOMAIN.
|
|
|
755
|
|
|
756 Normally DOMAIN will be a window or nil (meaning the selected window),
|
|
|
757 and an integer or nil (specifying the baseline in that particular
|
|
|
758 window and buffer) will be returned.
|
|
|
759
|
|
|
760 See `glyph-property-instance' for more information."
|
|
|
761 (glyph-property-instance glyph 'baseline domain default no-fallback))
|
|
|
762
|
|
|
763 (defun set-glyph-baseline (glyph spec &optional locale tag-set how-to-add)
|
|
|
764 "Change the baseline of GLYPH to SPEC in LOCALE.
|
|
|
765
|
|
|
766 SPEC should be an instantiator (an integer [a percentage above the
|
|
|
767 baseline of the line the glyph is on] or nil), a list of (possibly
|
|
|
768 tagged) instantiators, an alist of specifications (each mapping a
|
|
|
769 locale to an instantiator list), or a generic specifier object.
|
|
|
770
|
|
|
771 If SPEC is an alist, LOCALE must be omitted. If SPEC is a
|
|
2607
|
772 specifier object, LOCALE can be a locale, a locale type, `all',
|
|
428
|
773 or nil; see `copy-specifier' for its semantics. Otherwise LOCALE
|
|
|
774 specifies the locale under which the specified instantiator(s)
|
|
2607
|
775 will be added, and defaults to `global.'
|
|
428
|
776
|
|
|
777 See `set-glyph-property' for more information."
|
|
|
778 ; (interactive (glyph-interactive "baseline"))
|
|
|
779 (set-glyph-property glyph 'baseline spec locale tag-set how-to-add))
|
|
|
780
|
|
|
781 (defun make-glyph (&optional spec-list type)
|
|
442
|
782 "Create a new glyph of type TYPE.
|
|
|
783
|
|
|
784 A glyph in XEmacs does NOT refer to a single unit of textual display (the
|
|
|
785 XEmacs term for this is \"rune\"), but rather is an object encapsulating
|
|
|
786 a graphical element, such as an image or widget (an element such as a
|
|
|
787 button or text field; \"widget\" is the term for this under X Windows,
|
|
|
788 and it's called a \"control\" under MS Windows). This graphical element
|
|
|
789 could appear in a buffer, a margin, a gutter, or a toolbar, or as a mouse
|
|
|
790 pointer or an icon, for example.
|
|
|
791
|
|
|
792 Creating a glyph using `make-glyph' does not specify *where* the glyph
|
|
|
793 will be used, but it does specify *what* the glyph will look like. In
|
|
|
794 particular, SPEC-LIST is used to specify this, and it's used to
|
|
|
795 initialize the glyph's `image' property, which is an image
|
|
|
796 specifier. (Note that \"image\" as used in the context of a glyph's
|
|
|
797 `image' property or in the terms \"image specifier\", \"image
|
|
|
798 instantiator\", or \"image instance\" does not refer to what people
|
|
|
799 normally think of as an image (which in XEmacs is called a
|
|
|
800 \"pixmap\"), but to any graphical element -- a pixmap, a widget, or
|
|
|
801 even a block of text, when used in the places that call for a glyph.)
|
|
2607
|
802
|
|
|
803 SPEC-LIST is typically an image instantiator, describing the source for the
|
|
|
804 image data. This is either a vector of the form [FORMAT :KEYWORD DATA ...],
|
|
|
805 for example
|
|
|
806
|
|
|
807 [jpeg :file \"/user/john/images/myimage.jpg\"]
|
|
|
808
|
|
|
809 or
|
|
|
810
|
|
|
811 [xbm :data \"/* XPM */\nstatic char * copy[] = {\n...\"]
|
|
|
812
|
|
|
813 or it is a string, either giving a file name or directly specifying inline
|
|
|
814 data. See `make-image-specifier' for a detailed description of valid image
|
|
|
815 instantiators. If the instantiator is a string, XEmacs will convert it
|
|
|
816 into vector form by trying to guess whether a file name or inline data is
|
|
|
817 intended, and what kind of data is inline or in the file. Usually it does
|
|
|
818 a pretty good job. See `console-type-image-conversion-list' for details of
|
|
|
819 how this works.
|
|
|
820
|
|
|
821 If the instantiator specifies data from a file, the data will be read in
|
|
|
822 when `make-glyph' is called and substituted inline into the instantiator,
|
|
|
823 using the :data keyword. This means that the file must exist when the
|
|
|
824 glyph is created, but does not need to exist afterwards (e.g. it may safely
|
|
|
825 be a temporary file).
|
|
|
826
|
|
|
827 When errors occur in the process of reading image data from a file
|
|
|
828 \(e.g. the file does not exist or the data is of the wrong format or
|
|
|
829 corrupted), no Lisp error will currently be signalled. Instead, the
|
|
|
830 instantiator is skipped and warnings will be issued at level `debug'. \(A
|
|
|
831 glyph with no instantiators in it cannot be displayed.) Normally, such
|
|
|
832 warnings are ignored entirely, but you can change this by setting
|
|
|
833 `log-warning-minimum-level'. This is useful if you're trying to debug why
|
|
|
834 particular instantiators are not being processed. (#### We should probably
|
|
|
835 provide a way of getting errors in such circumstances, or even make this
|
|
|
836 the default behavior.)
|
|
|
837
|
|
|
838 Technically, SPEC-LIST can also be a list of image instantiators (each one
|
|
|
839 in turn is tried until an image is successfully produced), a cons of a
|
|
|
840 locale (frame, buffer, etc.) and an instantiator, a list of such conses,
|
|
|
841 or any other form accepted by `canonicalize-spec-list'.
|
|
428
|
842
|
|
442
|
843 If you're not familiar with specifiers, you should be in order to
|
|
|
844 understand how glyphs work. The clearest introduction to specifiers
|
|
|
845 is in the Lispref manual, available under Info. (Choose
|
|
|
846 Help->Info->Info Contents on the menubar or type \\[info].) You can
|
|
|
847 also see `make-specifier' for a capsule summary. What's important to
|
|
|
848 keep in mind is that a specifier lets you set a different value for
|
|
|
849 any particular buffer, window, frame, device, or console. This allows
|
|
|
850 for a great deal of flexibility; in particular, only one global glyph
|
|
|
851 needs to exist for a particular purpose (e.g. the icon used to represent
|
|
|
852 an iconified frame, the mouse pointer used over particular areas of a
|
|
|
853 frame, etc.), and in these cases you do not create your own glyph, but
|
|
|
854 rather modify the existing one.
|
|
|
855
|
|
|
856 As well as using SPEC-LIST to initialize the glyph, you can set
|
|
|
857 specifications using `set-glyph-image'. Note that, due to a possibly
|
|
|
858 questionable historical design decision, a glyph itself is not
|
|
|
859 actually a specifier, but rather is an object containing an image
|
|
|
860 specifier (as well as other, seldom-used properties). Therefore, you
|
|
|
861 cannot set or access specifications for the glyph's image by directly
|
|
|
862 using `set-specifier', `specifier-instance' or the like on the glyph;
|
|
|
863 instead use them on `(glyph-image GLYPH)' or use the convenience
|
|
|
864 functions `set-glyph-image', `glyph-image-instance', and
|
|
|
865 `glyph-image'.
|
|
|
866
|
|
|
867 Once you have created a glyph, you specify where it will be used as follows:
|
|
|
868
|
|
|
869 -- To insert a glyph into a buffer, create an extent in the buffer and then
|
|
|
870 use `set-extent-begin-glyph' or `set-extent-end-glyph' to set a glyph
|
|
|
871 to be displayed at the corresponding edge of the extent. (It is common
|
|
|
872 to create zero-width extents for this purpose.)
|
|
|
873
|
|
|
874 -- To insert a glyph into the left or right margin of a buffer, first
|
|
|
875 make sure the margin is visible by setting a value for the specifiers
|
|
|
876 `left-margin-width' or `right-margin-width'. (Not strictly necessary
|
|
|
877 when using margin glyphs with layout policy `whitespace'.) Then follow
|
|
|
878 the same procedure above for inserting a glyph in a buffer, and then
|
|
|
879 set a non-default layout policy for the glyph using
|
|
|
880 `set-extent-begin-glyph-layout' or `set-extent-end-glyph-layout'.
|
|
|
881 Alternatively, use the high-level annotations API (see
|
|
|
882 `make-annotation'). (In point of fact, you can also use the annotations
|
|
|
883 API for glyphs in a buffer, by setting a layout policy of `text'.)
|
|
|
884
|
|
|
885 -- To insert a glyph into the modeline, just put the glyph directly as
|
|
|
886 one of the modeline elements. (Unfortunately you can't currently
|
|
|
887 put a begin glyph or end glyph on one of the modeline extents --
|
|
|
888 they're ignored.)
|
|
428
|
889
|
|
442
|
890 -- To insert a glyph into a toolbar, specify it as part of a toolbar
|
|
|
891 instantiator (typically set on the specifier `default-toolbar').
|
|
|
892 See `default-toolbar' for more information. (Note that it is standard
|
|
|
893 practice to use a symbol in place of the glyph list in the toolbar
|
|
|
894 instantiator; the symbol is evalled to get the glyph list. This
|
|
|
895 facilitates both creating the toolbar instantiator and modifying
|
|
|
896 individual glyphs in a toolbar later on. For example, you can
|
|
|
897 change the way that the Mail toolbar button looks by modifying the
|
|
|
898 value of the variable `toolbar-mail-icon' (in general, `toolbar-*-icon')
|
|
|
899 and then calling `(set-specifier-dirty-flag default-toolbar)'.
|
|
|
900 (#### Unfortunately this doesn't quite work the way it should; the
|
|
2607
|
901 change will appear in new frames, but not existing ones.)
|
|
442
|
902
|
|
|
903 -- To insert a glyph into a gutter, create or modify a gutter instantiator
|
|
|
904 (typically set on the specifier `default-gutter'). Gutter instantiators
|
|
|
905 consist of strings or lists of strings, so to insert a glyph, create an
|
|
|
906 extent over the string, and use `set-extent-begin-glyph' or
|
|
|
907 `set-extent-end-glyph' to set a glyph to be displayed at the corresponding
|
|
|
908 edge of the extent, just like for glyphs in a buffer.
|
|
|
909
|
|
|
910 -- To use a glyph as the icon for a frame, you do not actually create a new
|
|
|
911 glyph; rather, you change the specifications for the existing glyph
|
|
|
912 `frame-icon-glyph'. (Remember that, because of the specifier nature of
|
|
|
913 glyphs, you can set different values for any particular buffer or frame.)
|
|
|
914
|
|
|
915 -- To use a glyph as the mouse pointer, in general you do not create a
|
|
|
916 new glyph, but rather you change the specifications of various existing
|
|
|
917 glyphs, such as `text-pointer-glyph' for the pointer used over text,
|
|
|
918 `modeline-pointer-glyph' for the pointer used over the modeline, etc.
|
|
|
919 Do an apropos over `*-pointer-glyph' to find all of them. (Note also
|
|
|
920 that you can temporarily set the mouse pointer to some specific shape
|
|
|
921 by using `set-frame-pointer', which takes an image instance, as obtained
|
|
|
922 from calling `glyph-image-instance' on a glyph of type `pointer' --
|
|
|
923 either one of the above-mentioned variables or one you created yourself.
|
|
|
924 (See below for what it means to create a glyph of type `pointer'.)
|
|
|
925 This pointer will last only until the next mouse motion event is
|
|
|
926 processed or certain other things happen, such as creating or deleting
|
|
|
927 a window. (In fact, the above-mentioned pointer glyph variables are
|
|
|
928 implemented as part of the default handler for mouse motion events.
|
|
|
929 If you want to customize this behavior, take a look at `mode-motion-hook',
|
|
|
930 or `mouse-motion-handler' if you really want to get low-level.)
|
|
|
931
|
|
|
932 -- To use a glyph to control the shape of miscellaneous redisplay effects
|
|
|
933 such as the truncation and continuation markers, set the appropriate
|
|
|
934 existing glyph variables, as for icons and pointers above. See
|
|
|
935 `continuation-glyph', `control-arrow-glyph', `hscroll-glyph',
|
|
|
936 `invisible-text-glyph', `octal-escape-glyph', and `truncation-glyph'.
|
|
|
937 See also `overlay-arrow-string', an odd redisplay leftover which can
|
|
|
938 be set to a glyph you created, and will cause the glyph to be displayed
|
|
|
939 on top of the text position specified in the marker stored in
|
|
|
940 `overlay-arrow-position'.
|
|
|
941
|
|
|
942 -- To use a glyph in a display table (i.e. to control the appearance of
|
|
|
943 any individual character), create the appropriate character glyphs
|
|
|
944 and then set a specification for the specifier `current-display-table',
|
|
|
945 which controls the appearance of characters. You can also set an
|
|
|
946 overriding display table for use with text displayed in a particular
|
|
|
947 face; see `set-face-display-table' and `make-display-table'.
|
|
|
948
|
|
|
949 -- To use a glyph as the background pixmap of a face: Note that the
|
|
|
950 background pixmap of a face is actually an image specifier -- probably
|
|
|
951 the only place in XEmacs where an image specifier occurs outside of
|
|
|
952 a glyph. Similarly to how the glyph's image specifier works, you
|
|
|
953 don't create your own image specifier, but rather add specifications
|
|
|
954 to the existing one (using `set-face-background-pixmap'). Note that
|
|
|
955 the image instance that is generated in order to actually display the
|
|
|
956 background pixmap is of type `mono-pixmap', meaning that it's a two-color
|
|
|
957 image and the foreground and background of the image get filled in with
|
|
|
958 the corresponding colors from the face.
|
|
|
959
|
|
|
960 It is extremely rare that you will ever have to specify a value for TYPE,
|
|
|
961 which should be one of `buffer' (used for glyphs in an extent, the modeline,
|
|
|
962 the toolbar, or elsewhere in a buffer), `pointer' (used for the mouse-pointer),
|
|
|
963 or `icon' (used for a frame's icon), and defaults to `buffer'. The only cases
|
|
|
964 where it needs to be specified is when creating icon or pointer glyphs, and
|
|
|
965 in both cases the necessary glyphs have already been created at startup and
|
|
|
966 are accessed through the appropriate variables, e.g. `text-pointer-glyph'
|
|
|
967 (or in general, `*-pointer-glyph') and `frame-icon-glyph'."
|
|
428
|
968 (let ((glyph (make-glyph-internal type)))
|
|
|
969 (and spec-list (set-glyph-image glyph spec-list))
|
|
|
970 glyph))
|
|
|
971
|
|
|
972 (defun buffer-glyph-p (object)
|
|
|
973 "Return t if OBJECT is a glyph of type `buffer'."
|
|
|
974 (and (glyphp object) (eq 'buffer (glyph-type object))))
|
|
|
975
|
|
|
976 (defun pointer-glyph-p (object)
|
|
|
977 "Return t if OBJECT is a glyph of type `pointer'."
|
|
|
978 (and (glyphp object) (eq 'pointer (glyph-type object))))
|
|
|
979
|
|
|
980 (defun icon-glyph-p (object)
|
|
|
981 "Return t if OBJECT is a glyph of type `icon'."
|
|
|
982 (and (glyphp object) (eq 'icon (glyph-type object))))
|
|
|
983
|
|
|
984 (defun make-pointer-glyph (&optional spec-list)
|
|
|
985 "Return a new `pointer-glyph' object with the specification list SPEC-LIST.
|
|
|
986 This is equivalent to calling `make-glyph', specifying a type of `pointer'.
|
|
442
|
987 See `make-glyph' for more information.
|
|
428
|
988
|
|
442
|
989 It is extremely unlikely that you will ever need to create a pointer glyph.
|
|
|
990 Instead, you probably want to be calling `set-glyph-image' on an existing
|
|
|
991 glyph, e.g. `text-pointer-glyph'."
|
|
428
|
992 (make-glyph spec-list 'pointer))
|
|
|
993
|
|
|
994 (defun make-icon-glyph (&optional spec-list)
|
|
|
995 "Return a new `icon-glyph' object with the specification list SPEC-LIST.
|
|
|
996 This is equivalent to calling `make-glyph', specifying a type of `icon'.
|
|
442
|
997 See `make-glyph' for more information.
|
|
428
|
998
|
|
442
|
999 It is extremely unlikely that you will ever need to create a icon glyph.
|
|
|
1000 Instead, you probably want to be calling `set-glyph-image' on
|
|
|
1001 `frame-icon-glyph'."
|
|
428
|
1002 (make-glyph spec-list 'icon))
|
|
|
1003
|
|
|
1004 (defun nothing-image-instance-p (object)
|
|
|
1005 "Return t if OBJECT is an image instance of type `nothing'."
|
|
|
1006 (and (image-instance-p object) (eq 'nothing (image-instance-type object))))
|
|
|
1007
|
|
|
1008 (defun text-image-instance-p (object)
|
|
|
1009 "Return t if OBJECT is an image instance of type `text'."
|
|
|
1010 (and (image-instance-p object) (eq 'text (image-instance-type object))))
|
|
|
1011
|
|
|
1012 (defun mono-pixmap-image-instance-p (object)
|
|
|
1013 "Return t if OBJECT is an image instance of type `mono-pixmap'."
|
|
|
1014 (and (image-instance-p object) (eq 'mono-pixmap
|
|
|
1015 (image-instance-type object))))
|
|
|
1016
|
|
|
1017 (defun color-pixmap-image-instance-p (object)
|
|
|
1018 "Return t if OBJECT is an image instance of type `color-pixmap'."
|
|
|
1019 (and (image-instance-p object) (eq 'color-pixmap
|
|
|
1020 (image-instance-type object))))
|
|
|
1021
|
|
|
1022 (defun pointer-image-instance-p (object)
|
|
|
1023 "Return t if OBJECT is an image instance of type `pointer'."
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|
|
1024 (and (image-instance-p object) (eq 'pointer (image-instance-type object))))
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|
|
1025
|
|
442
|
1026 (defun widget-image-instance-p (object)
|
|
|
1027 "Return t if OBJECT is an image instance of type `widget'."
|
|
|
1028 (and (image-instance-p object) (eq 'widget (image-instance-type object))))
|
|
|
1029
|
|
428
|
1030 (defun subwindow-image-instance-p (object)
|
|
442
|
1031 "Return t if OBJECT is an image instance of type `subwindow'."
|
|
428
|
1032 (and (image-instance-p object) (eq 'subwindow (image-instance-type object))))
|
|
|
1033
|
|
|
1034 ;;;;;;;;;; the built-in glyphs
|
|
|
1035
|
|
|
1036 (defvar text-pointer-glyph (make-pointer-glyph)
|
|
|
1037 "*The shape of the mouse-pointer when over text.
|
|
|
1038 This is a glyph; use `set-glyph-image' to change it.")
|
|
|
1039 (set-glyph-face text-pointer-glyph 'pointer)
|
|
|
1040
|
|
|
1041 (defvar nontext-pointer-glyph (make-pointer-glyph)
|
|
|
1042 "*The shape of the mouse-pointer when over a buffer, but not over text.
|
|
|
1043 This is a glyph; use `set-glyph-image' to change it.
|
|
|
1044 If unspecified in a particular domain, `text-pointer-glyph' is used.")
|
|
|
1045 (set-glyph-face nontext-pointer-glyph 'pointer)
|
|
|
1046
|
|
|
1047 (defvar modeline-pointer-glyph (make-pointer-glyph)
|
|
|
1048 "*The shape of the mouse-pointer when over the modeline.
|
|
|
1049 This is a glyph; use `set-glyph-image' to change it.
|
|
|
1050 If unspecified in a particular domain, `nontext-pointer-glyph' is used.")
|
|
|
1051 (set-glyph-face modeline-pointer-glyph 'pointer)
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|
|
1052
|
|
|
1053 (defvar selection-pointer-glyph (make-pointer-glyph)
|
|
|
1054 "*The shape of the mouse-pointer when over a selectable text region.
|
|
|
1055 This is a glyph; use `set-glyph-image' to change it.
|
|
|
1056 If unspecified in a particular domain, `text-pointer-glyph' is used.")
|
|
|
1057 (set-glyph-face selection-pointer-glyph 'pointer)
|
|
|
1058
|
|
|
1059 (defvar busy-pointer-glyph (make-pointer-glyph)
|
|
|
1060 "*The shape of the mouse-pointer when XEmacs is busy.
|
|
|
1061 This is a glyph; use `set-glyph-image' to change it.
|
|
|
1062 If unspecified in a particular domain, the pointer is not changed
|
|
|
1063 when XEmacs is busy.")
|
|
|
1064 (set-glyph-face busy-pointer-glyph 'pointer)
|
|
|
1065
|
|
|
1066 (defvar toolbar-pointer-glyph (make-pointer-glyph)
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|
|
1067 "*The shape of the mouse-pointer when over a toolbar.
|
|
|
1068 This is a glyph; use `set-glyph-image' to change it.
|
|
|
1069 If unspecified in a particular domain, `nontext-pointer-glyph' is used.")
|
|
|
1070 (set-glyph-face toolbar-pointer-glyph 'pointer)
|
|
|
1071
|
|
|
1072 (defvar divider-pointer-glyph (make-pointer-glyph)
|
|
|
1073 "*The shape of the mouse-pointer when over a window divider.
|
|
|
1074 This is a glyph; use `set-glyph-image' to change it.
|
|
|
1075 If unspecified in a particular domain, `nontext-pointer-glyph' is used.")
|
|
|
1076 (set-glyph-face divider-pointer-glyph 'pointer)
|
|
|
1077
|
|
|
1078 ;; The following three are in C.
|
|
|
1079 (if (featurep 'menubar)
|
|
|
1080 (set-glyph-face menubar-pointer-glyph 'pointer))
|
|
|
1081 (if (featurep 'scrollbar)
|
|
|
1082 (set-glyph-face scrollbar-pointer-glyph 'pointer))
|
|
|
1083 (set-glyph-face gc-pointer-glyph 'pointer)
|
|
|
1084
|
|
|
1085 ;; Now add the magic access/set behavior.
|
|
|
1086
|
|
|
1087 (defun dontusethis-set-value-glyph-handler (sym args fun harg handler)
|
|
|
1088 (error "Use `set-glyph-image' to set `%s'" sym))
|
|
|
1089 (defun dontusethis-make-unbound-glyph-handler (sym args fun harg handler)
|
|
|
1090 (error "Can't `makunbound' `%s'" sym))
|
|
|
1091 (defun dontusethis-make-local-glyph-handler (sym args fun harg handler)
|
|
|
1092 (error "Use `set-glyph-image' to make local values for `%s'" sym))
|
|
|
1093
|
|
|
1094 (defun define-constant-glyph (sym)
|
|
|
1095 (dontusethis-set-symbol-value-handler
|
|
|
1096 sym 'set-value
|
|
|
1097 'dontusethis-set-value-glyph-handler)
|
|
|
1098 (dontusethis-set-symbol-value-handler
|
|
|
1099 sym 'make-unbound
|
|
|
1100 'dontusethis-make-unbound-glyph-handler)
|
|
|
1101 (dontusethis-set-symbol-value-handler
|
|
|
1102 sym 'make-local
|
|
|
1103 'dontusethis-make-local-glyph-handler)
|
|
|
1104 ;; Make frame properties magically work with glyph variables.
|
|
|
1105 (put sym 'const-glyph-variable t))
|
|
|
1106
|
|
|
1107 (define-constant-glyph 'text-pointer-glyph)
|
|
|
1108 (define-constant-glyph 'nontext-pointer-glyph)
|
|
|
1109 (define-constant-glyph 'modeline-pointer-glyph)
|
|
|
1110 (define-constant-glyph 'selection-pointer-glyph)
|
|
|
1111 (define-constant-glyph 'busy-pointer-glyph)
|
|
|
1112 (define-constant-glyph 'gc-pointer-glyph)
|
|
|
1113 (define-constant-glyph 'divider-pointer-glyph)
|
|
|
1114 (define-constant-glyph 'toolbar-pointer-glyph)
|
|
|
1115 (define-constant-glyph 'menubar-pointer-glyph)
|
|
|
1116 (define-constant-glyph 'scrollbar-pointer-glyph)
|
|
|
1117
|
|
|
1118 (define-constant-glyph 'octal-escape-glyph)
|
|
|
1119 (define-constant-glyph 'control-arrow-glyph)
|
|
|
1120 (define-constant-glyph 'invisible-text-glyph)
|
|
|
1121 (define-constant-glyph 'hscroll-glyph)
|
|
|
1122 (define-constant-glyph 'truncation-glyph)
|
|
|
1123 (define-constant-glyph 'continuation-glyph)
|
|
|
1124
|
|
|
1125 (define-constant-glyph 'frame-icon-glyph)
|
|
|
1126
|
|
|
1127 ;; backwards compatibility garbage
|
|
|
1128
|
|
|
1129 (defun dontusethis-old-pointer-shape-handler (sym args fun harg handler)
|
|
|
1130 (let ((value (car args)))
|
|
|
1131 (if (null value)
|
|
|
1132 (remove-specifier harg 'global)
|
|
|
1133 (set-glyph-image (symbol-value harg) value))))
|
|
|
1134
|
|
|
1135 ;; It might or might not be garbage, but it's rude. Make these
|
|
2607
|
1136 ;; `compatible' instead of `obsolete.' -slb
|
|
428
|
1137 (defun define-obsolete-pointer-glyph (old new)
|
|
|
1138 (define-compatible-variable-alias old new)
|
|
|
1139 (dontusethis-set-symbol-value-handler
|
|
|
1140 old 'set-value 'dontusethis-old-pointer-shape-handler new))
|
|
|
1141
|
|
|
1142 ;;; (defvar x-pointer-shape nil)
|
|
|
1143 (define-obsolete-pointer-glyph 'x-pointer-shape 'text-pointer-glyph)
|
|
|
1144
|
|
|
1145 ;;; (defvar x-nontext-pointer-shape nil)
|
|
|
1146 (define-obsolete-pointer-glyph 'x-nontext-pointer-shape 'nontext-pointer-glyph)
|
|
|
1147
|
|
|
1148 ;;; (defvar x-mode-pointer-shape nil)
|
|
|
1149 (define-obsolete-pointer-glyph 'x-mode-pointer-shape 'modeline-pointer-glyph)
|
|
|
1150
|
|
|
1151 ;;; (defvar x-selection-pointer-shape nil)
|
|
|
1152 (define-obsolete-pointer-glyph 'x-selection-pointer-shape
|
|
|
1153 'selection-pointer-glyph)
|
|
|
1154
|
|
|
1155 ;;; (defvar x-busy-pointer-shape nil)
|
|
|
1156 (define-obsolete-pointer-glyph 'x-busy-pointer-shape 'busy-pointer-glyph)
|
|
|
1157
|
|
|
1158 ;;; (defvar x-gc-pointer-shape nil)
|
|
|
1159 (define-obsolete-pointer-glyph 'x-gc-pointer-shape 'gc-pointer-glyph)
|
|
|
1160
|
|
|
1161 ;;; (defvar x-toolbar-pointer-shape nil)
|
|
|
1162 (define-obsolete-pointer-glyph 'x-toolbar-pointer-shape 'toolbar-pointer-glyph)
|
|
|
1163
|
|
|
1164 ;; for subwindows
|
|
|
1165 (defalias 'subwindow-xid 'image-instance-subwindow-id)
|
|
|
1166 (defalias 'subwindow-width 'image-instance-width)
|
|
|
1167 (defalias 'subwindow-height 'image-instance-height)
|
|
|
1168 ;;;;;;;;;; initialization
|
|
|
1169
|
|
|
1170 (defun init-glyphs ()
|
|
|
1171 ;; initialize default image types
|
|
|
1172 (if (featurep 'x)
|
|
|
1173 (set-console-type-image-conversion-list 'x
|
|
|
1174 `(,@(if (featurep 'xpm) '(("\\.xpm\\'" [xpm :file nil] 2)))
|
|
|
1175 ("\\.xbm\\'" [xbm :file nil] 2)
|
|
|
1176 ,@(if (featurep 'xpm) '(("\\`/\\* XPM \\*/" [xpm :data nil] 2)))
|
|
|
1177 ,@(if (featurep 'xface) '(("\\`X-Face:" [xface :data nil] 2)))
|
|
|
1178 ,@(if (featurep 'gif) '(("\\.gif\\'" [gif :file nil] 2)
|
|
|
1179 ("\\`GIF8[79]" [gif :data nil] 2)))
|
|
|
1180 ,@(if (featurep 'jpeg) '(("\\.jpe?g\\'" [jpeg :file nil] 2)))
|
|
|
1181 ;; all of the JFIF-format JPEG's that I've seen begin with
|
|
|
1182 ;; the following. I have no idea if this is standard.
|
|
|
1183 ,@(if (featurep 'jpeg) '(("\\`\377\330\377\340\000\020JFIF"
|
|
|
1184 [jpeg :data nil] 2)))
|
|
|
1185 ,@(if (featurep 'png) '(("\\.png\\'" [png :file nil] 2)))
|
|
|
1186 ,@(if (featurep 'png) '(("\\`\211PNG" [png :data nil] 2)))
|
|
446
|
1187 ("" [string :data nil] 2)
|
|
|
1188 ("" [nothing]))))
|
|
428
|
1189 ;; #### this should really be formatted-string, not string but we
|
|
|
1190 ;; don't have it implemented yet
|
|
|
1191 ;;
|
|
|
1192 ;; #define could also mean a bitmap as well as a version 1 XPM. Who
|
|
|
1193 ;; cares. We don't want the file contents getting converted to a
|
|
|
1194 ;; string in either case which is why the entry is there.
|
|
|
1195 (if (featurep 'tty)
|
|
|
1196 (progn
|
|
|
1197 (set-console-type-image-conversion-list
|
|
|
1198 'tty
|
|
|
1199 '(("^#define" [string :data "[xpm]"])
|
|
|
1200 ("\\`X-Face:" [string :data "[xface]"])
|
|
|
1201 ("\\`/\\* XPM \\*/" [string :data "[xpm]"])
|
|
|
1202 ("\\`GIF87" [string :data "[gif]"])
|
|
|
1203 ("\\`\377\330\340\000\020JFIF" [string :data "[jpeg]"])
|
|
|
1204 ("" [string :data nil] 2)
|
|
|
1205 ;; this last one is here for pointers and icons and such --
|
|
|
1206 ;; strings are not allowed so they will be ignored.
|
|
|
1207 ("" [nothing])))
|
|
|
1208
|
|
|
1209 ;; finish initializing truncation glyph -- created internally
|
|
|
1210 ;; because it has a built-in bitmap
|
|
|
1211 (set-glyph-image truncation-glyph "$" 'global 'tty)
|
|
|
1212
|
|
|
1213 ;; finish initializing continuation glyph -- created internally
|
|
|
1214 ;; because it has a built-in bitmap
|
|
|
1215 (set-glyph-image continuation-glyph "\\" 'global 'tty)
|
|
|
1216
|
|
|
1217 ;; finish initializing hscroll glyph -- created internally
|
|
|
1218 ;; because it has a built-in bitmap
|
|
|
1219 (set-glyph-image hscroll-glyph "$" 'global 'tty)))
|
|
|
1220
|
|
|
1221 (set-glyph-image octal-escape-glyph "\\")
|
|
|
1222 (set-glyph-image control-arrow-glyph "^")
|
|
|
1223 (set-glyph-image invisible-text-glyph " ...")
|
|
|
1224 ;; (set-glyph-image hscroll-glyph "$")
|
|
|
1225
|
|
|
1226 (let ((face (make-face 'border-glyph
|
|
|
1227 "Truncation and continuation glyphs face")))
|
|
|
1228 (set-glyph-face continuation-glyph face)
|
|
|
1229 (set-glyph-face truncation-glyph face)
|
|
|
1230 (set-glyph-face hscroll-glyph face))
|
|
|
1231
|
|
|
1232 ;; finish initializing xemacs logo -- created internally because it
|
|
|
1233 ;; has a built-in bitmap
|
|
|
1234 (if (featurep 'xpm)
|
|
|
1235 (set-glyph-image xemacs-logo
|
|
|
1236 (concat "../etc/"
|
|
|
1237 (if emacs-beta-version
|
|
|
1238 "xemacs-beta.xpm"
|
|
|
1239 "xemacs.xpm"))
|
|
|
1240 'global 'x))
|
|
|
1241 (cond ((featurep 'xpm)
|
|
|
1242 (set-glyph-image frame-icon-glyph
|
|
|
1243 (concat "../etc/" "xemacs-icon.xpm")
|
|
|
1244 'global 'x))
|
|
|
1245 ((featurep 'x)
|
|
|
1246 (set-glyph-image frame-icon-glyph
|
|
|
1247 (concat "../etc/" "xemacs-icon2.xbm")
|
|
|
1248 'global 'x)))
|
|
|
1249
|
|
|
1250 (if (featurep 'tty)
|
|
|
1251 (set-glyph-image xemacs-logo
|
|
|
1252 "XEmacs <insert spiffy graphic logo here>"
|
|
|
1253 'global 'tty))
|
|
|
1254 )
|
|
|
1255
|
|
|
1256 (init-glyphs)
|
|
|
1257
|
|
|
1258 ;;; glyphs.el ends here.
|
