annotate lisp/x-scrollbar.el @ 5366:f00192e1cd49

Examining the result of #'length: `eql', not `=', it's better style & cheaper 2011-03-08 Aidan Kehoe <kehoea@parhasard.net> * buff-menu.el (list-buffers-noselect): * byte-optimize.el (byte-optimize-identity): * byte-optimize.el (byte-optimize-if): * byte-optimize.el (byte-optimize-nth): * byte-optimize.el (byte-optimize-nthcdr): * bytecomp.el (byte-compile-warn-wrong-args): * bytecomp.el (byte-compile-two-args-19->20): * bytecomp.el (byte-compile-list): * bytecomp.el (byte-compile-beginning-of-line): * bytecomp.el (byte-compile-set): * bytecomp.el (byte-compile-set-default): * bytecomp.el (byte-compile-values): * bytecomp.el (byte-compile-values-list): * bytecomp.el (byte-compile-integerp): * bytecomp.el (byte-compile-multiple-value-list-internal): * bytecomp.el (byte-compile-throw): * cl-macs.el (cl-do-arglist): * cl-macs.el (cl-parse-loop-clause): * cl-macs.el (multiple-value-bind): * cl-macs.el (multiple-value-setq): * cl-macs.el (get-setf-method): * cmdloop.el (command-error): * cmdloop.el (y-or-n-p-minibuf): * cmdloop.el (yes-or-no-p-minibuf): * coding.el (unencodable-char-position): * cus-edit.el (custom-face-prompt): * cus-edit.el (custom-buffer-create-internal): * cus-edit.el (widget-face-action): * cus-edit.el (custom-group-value-create): * descr-text.el (describe-char-unicode-data): * dialog-gtk.el (popup-builtin-question-dialog): * dragdrop.el (experimental-dragdrop-drop-log-function): * dragdrop.el (experimental-dragdrop-drop-mime-default): * easymenu.el (easy-menu-add): * easymenu.el (easy-menu-remove): * faces.el (read-face-name): * faces.el (set-face-stipple): * files.el (file-name-non-special): * font.el (font-combine-fonts): * font.el (font-set-face-font): * font.el (font-parse-rgb-components): * font.el (font-rgb-color-p): * font.el (font-color-rgb-components): * gnuserv.el (gnuserv-edit-files): * help.el (key-or-menu-binding): * help.el (function-documentation-1): * help.el (function-documentation): * info.el (info): * isearch-mode.el (isearch-exit): * isearch-mode.el (isearch-edit-string): * isearch-mode.el (isearch-*-char): * isearch-mode.el (isearch-complete1): * ldap.el (ldap-encode-country-string): * ldap.el (ldap-decode-string): * minibuf.el (read-file-name-internal-1): * minibuf.el (read-non-nil-coding-system): * minibuf.el (get-user-response): * mouse.el (drag-window-divider): * mule/ccl.el: * mule/ccl.el (ccl-compile-if): * mule/ccl.el (ccl-compile-break): * mule/ccl.el (ccl-compile-repeat): * mule/ccl.el (ccl-compile-write-repeat): * mule/ccl.el (ccl-compile-call): * mule/ccl.el (ccl-compile-end): * mule/ccl.el (ccl-compile-read-multibyte-character): * mule/ccl.el (ccl-compile-write-multibyte-character): * mule/ccl.el (ccl-compile-translate-character): * mule/ccl.el (ccl-compile-mule-to-unicode): * mule/ccl.el (ccl-compile-unicode-to-mule): * mule/ccl.el (ccl-compile-lookup-integer): * mule/ccl.el (ccl-compile-lookup-character): * mule/ccl.el (ccl-compile-map-multiple): * mule/ccl.el (ccl-compile-map-single): * mule/devan-util.el (devanagari-compose-to-one-glyph): * mule/devan-util.el (devanagari-composition-component): * mule/mule-cmds.el (finish-set-language-environment): * mule/viet-util.el: * mule/viet-util.el (viet-encode-viscii-char): * multicast.el (open-multicast-group): * newcomment.el (comment-quote-nested): * newcomment.el (comment-region): * newcomment.el (comment-dwim): * regexp-opt.el (regexp-opt-group): * replace.el (map-query-replace-regexp): * specifier.el (derive-device-type-from-tag-set): * subr.el (skip-chars-quote): * test-harness.el (test-harness-from-buffer): * test-harness.el (batch-test-emacs): * wid-edit.el (widget-choice-action): * wid-edit.el (widget-symbol-prompt-internal): * wid-edit.el (widget-color-action): * window-xemacs.el (push-window-configuration): * window-xemacs.el (pop-window-configuration): * window.el (quit-window): * x-compose.el (electric-diacritic): It's better style, and cheaper (often one assembler instruction vs. a C funcall in the byte code), to use `eql' instead of `=' when it's clear what numerical type a given result will be. Change much of our code to do this, with the help of a byte-compiler change (not comitted) that looked for calls to #'length (which always returns an integer) in its args.
author Aidan Kehoe <kehoea@parhasard.net>
date Tue, 08 Mar 2011 23:41:52 +0000
parents 7039e6323819
children 308d34e9f07d
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1 ;;; x-scrollbar.el --- scrollbar resourcing and such.
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2
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3 ;; Copyright (C) 1997 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1995 Sun Microsystems.
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5 ;; Copyright (C) 1995, 1996 Ben Wing.
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6
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7 ;; Author: Ben Wing <ben@xemacs.org>
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8 ;; Maintainer: XEmacs Development Team
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9 ;; Keywords: extensions, dumped
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10
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11 ;; This file is part of XEmacs.
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12
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13 ;; XEmacs is free software; you can redistribute it and/or modify it
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14 ;; under the terms of the GNU General Public License as published by
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15 ;; the Free Software Foundation; either version 2, or (at your option)
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16 ;; any later version.
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17
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18 ;; XEmacs is distributed in the hope that it will be useful, but
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19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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21 ;; General Public License for more details.
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22
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23 ;; You should have received a copy of the GNU General Public License
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24 ;; along with XEmacs; see the file COPYING. If not, write to the
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25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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26 ;; Boston, MA 02111-1307, USA.
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27
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28 ;;; Synched up with: Not synched.
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29
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30 ;;; Commentary:
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31
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32 ;; This file is dumped with XEmacs (when X and menubar support is compiled in).
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33
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34 ;;; Code:
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35
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
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36 (globally-declare-fboundp
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37 '(x-init-specifier-from-resources x-get-resource))
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38
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39 (defun x-init-scrollbar-from-resources (locale)
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40 (x-init-specifier-from-resources
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41 (specifier-fallback scrollbar-width) 'natnum locale
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42 '("scrollBarWidth" . "ScrollBarWidth")
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43 ;; The name strings are wrong, but the scrollbar name is
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44 ;; non-deterministic so it is a poor way to set a resource
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45 ;; for the scrollbar anyhow.
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46 (cond ((featurep 'athena-scrollbars)
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47 '("scrollbar.thickness" . "ScrollBar.Thickness"))
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48 ((featurep 'lucid-scrollbars)
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49 '("scrollbar.width" . "XlwScrollBar.Width"))
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50 ((featurep 'motif-scrollbars)
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51 '("scrollbar.width" . "XmScrollBar.Width"))))
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52 ;; Athena scrollbars accept either 'thickness' or 'width'.
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53 ;; If any of the previous resources succeeded, the following
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54 ;; call does nothing; so there's no harm in doing it all the
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55 ;; time.
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56 (if (featurep 'athena-scrollbars)
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57 (x-init-specifier-from-resources
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58 (specifier-fallback scrollbar-width) 'natnum locale
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59 '("scrollbar.width" . "ScrollBar.Width")))
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60
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61 ;; lather, rinse, repeat.
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62 (x-init-specifier-from-resources
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63 (specifier-fallback scrollbar-height) 'natnum locale
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64 '("scrollBarHeight" . "ScrollBarHeight")
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65 ;; The name strings are wrong, but the scrollbar name is
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66 ;; non-deterministic so it is a poor way to set a resource
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67 ;; for the scrollbar anyhow.
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68 (cond ((featurep 'athena-scrollbars)
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69 '("scrollbar.thickness" . "ScrollBar.Thickness"))
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70 ((featurep 'lucid-scrollbars)
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71 '("scrollbar.height" . "XlwScrollBar.Height"))
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72 ((featurep 'motif-scrollbars)
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73 '("scrollbar.height" . "XmScrollBar.Height"))))
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74 ;; Athena scrollbars accept either 'thickness' or 'height'.
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75 ;; If any of the previous resources succeeded, the following
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76 ;; call does nothing; so there's no harm in doing it all the
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77 ;; time.
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78 (if (featurep 'athena-scrollbars)
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79 (x-init-specifier-from-resources
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80 (specifier-fallback scrollbar-height) 'natnum locale
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81 '("scrollbar.height" . "ScrollBar.Height")))
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82
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83 ;; Now do ScrollBarPlacement.scrollBarPlacement
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84 (let ((case-fold-search t)
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85 (resval (x-get-resource "ScrollBarPlacement" "scrollBarPlacement"
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86 'string locale nil 'warn)))
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87 (cond
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88 ((null resval))
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89 ((string-match "^top[_-]left$" resval)
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90 (set-specifier scrollbar-on-top-p t locale)
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91 (set-specifier scrollbar-on-left-p t locale))
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92 ((string-match "^top[_-]right$" resval)
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93 (set-specifier scrollbar-on-top-p t locale)
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94 (set-specifier scrollbar-on-left-p nil locale))
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95 ((string-match "^bottom[_-]left$" resval)
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96 (set-specifier scrollbar-on-top-p nil locale)
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97 (set-specifier scrollbar-on-left-p t locale))
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98 ((string-match "^bottom[_-]right$" resval)
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99 (set-specifier scrollbar-on-top-p nil locale)
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100 (set-specifier scrollbar-on-left-p nil locale))
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101 (t
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102 (display-warning 'resource
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103 (format "Illegal value '%s' for scrollBarPlacement resource" resval)))))
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104
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105 )
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106
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107 ;;; x-scrollbar.el ends here