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1 | ;;; calc-trail.el --- functions for manipulating the Calc "trail" |
2 | ||
58ba2f8f | 3 | ;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004, |
8b72699e | 4 | ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
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5 | |
6 | ;; Author: David Gillespie <daveg@synaptics.com> | |
e8fff8ed | 7 | ;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com> |
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8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
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11 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
12 | ;; it under the terms of the GNU General Public License as published by | |
075969b4 | 13 | ;; the Free Software Foundation; either version 3, or (at your option) |
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14 | ;; any later version. |
15 | ||
136211a9 | 16 | ;; GNU Emacs is distributed in the hope that it will be useful, |
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17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
24 | ;; Boston, MA 02110-1301, USA. | |
136211a9 | 25 | |
3132f345 | 26 | ;;; Commentary: |
136211a9 | 27 | |
3132f345 | 28 | ;;; Code: |
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29 | |
30 | ;; This file is autoloaded from calc-ext.el. | |
136211a9 | 31 | |
07b7530a | 32 | (require 'calc-ext) |
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33 | (require 'calc-macs) |
34 | ||
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35 | ;;; Trail commands. |
36 | ||
37 | (defun calc-trail-in () | |
38 | (interactive) | |
39 | (let ((win (get-buffer-window (calc-trail-display t)))) | |
bf77c646 | 40 | (and win (select-window win)))) |
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41 | |
42 | (defun calc-trail-out () | |
43 | (interactive) | |
44 | (calc-select-buffer) | |
45 | (let ((win (get-buffer-window (current-buffer)))) | |
46 | (if win | |
47 | (progn | |
48 | (select-window win) | |
49 | (calc-align-stack-window)) | |
bf77c646 | 50 | (calc)))) |
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51 | |
52 | (defun calc-trail-next (n) | |
53 | (interactive "p") | |
54 | (calc-with-trail-buffer | |
55 | (forward-line n) | |
bf77c646 | 56 | (calc-trail-here))) |
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57 | |
58 | (defun calc-trail-previous (n) | |
59 | (interactive "p") | |
60 | (calc-with-trail-buffer | |
61 | (forward-line (- n)) | |
bf77c646 | 62 | (calc-trail-here))) |
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63 | |
64 | (defun calc-trail-first (n) | |
65 | (interactive "p") | |
66 | (calc-with-trail-buffer | |
67 | (goto-char (point-min)) | |
68 | (forward-line n) | |
bf77c646 | 69 | (calc-trail-here))) |
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70 | |
71 | (defun calc-trail-last (n) | |
72 | (interactive "p") | |
73 | (calc-with-trail-buffer | |
74 | (goto-char (point-max)) | |
75 | (forward-line (- n)) | |
bf77c646 | 76 | (calc-trail-here))) |
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77 | |
78 | (defun calc-trail-scroll-left (n) | |
79 | (interactive "P") | |
80 | (let ((curwin (selected-window))) | |
81 | (calc-with-trail-buffer | |
82 | (unwind-protect | |
83 | (progn | |
84 | (select-window (get-buffer-window (current-buffer))) | |
85 | (calc-scroll-left n)) | |
bf77c646 | 86 | (select-window curwin))))) |
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87 | |
88 | (defun calc-trail-scroll-right (n) | |
89 | (interactive "P") | |
90 | (let ((curwin (selected-window))) | |
91 | (calc-with-trail-buffer | |
92 | (unwind-protect | |
93 | (progn | |
94 | (select-window (get-buffer-window (current-buffer))) | |
95 | (calc-scroll-right n)) | |
bf77c646 | 96 | (select-window curwin))))) |
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97 | |
98 | (defun calc-trail-forward (n) | |
99 | (interactive "p") | |
100 | (calc-with-trail-buffer | |
101 | (forward-line (* n (1- (window-height)))) | |
bf77c646 | 102 | (calc-trail-here))) |
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103 | |
104 | (defun calc-trail-backward (n) | |
105 | (interactive "p") | |
106 | (calc-with-trail-buffer | |
107 | (forward-line (- (* n (1- (window-height))))) | |
bf77c646 | 108 | (calc-trail-here))) |
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109 | |
110 | (defun calc-trail-isearch-forward () | |
111 | (interactive) | |
112 | (calc-with-trail-buffer | |
113 | (save-window-excursion | |
114 | (select-window (get-buffer-window (current-buffer))) | |
115 | (let ((search-exit-char ?\r)) | |
116 | (isearch-forward))) | |
bf77c646 | 117 | (calc-trail-here))) |
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118 | |
119 | (defun calc-trail-isearch-backward () | |
120 | (interactive) | |
121 | (calc-with-trail-buffer | |
122 | (save-window-excursion | |
123 | (select-window (get-buffer-window (current-buffer))) | |
124 | (let ((search-exit-char ?\r)) | |
125 | (isearch-backward))) | |
bf77c646 | 126 | (calc-trail-here))) |
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127 | |
128 | (defun calc-trail-yank (arg) | |
129 | (interactive "P") | |
130 | (calc-wrapper | |
131 | (or arg (calc-set-command-flag 'hold-trail)) | |
132 | (calc-enter-result 0 "yank" | |
133 | (calc-with-trail-buffer | |
134 | (if arg | |
135 | (forward-line (- (prefix-numeric-value arg)))) | |
136 | (if (or (looking-at "Emacs Calc") | |
137 | (looking-at "----") | |
138 | (looking-at " ? ? ?[^ \n]* *$") | |
139 | (looking-at "..?.?$")) | |
140 | (error "Can't yank that line")) | |
141 | (if (looking-at ".*, \\.\\.\\., ") | |
142 | (error "Can't yank (vector was abbreviated)")) | |
143 | (forward-char 4) | |
144 | (search-forward " ") | |
145 | (let* ((next (save-excursion (forward-line 1) (point))) | |
146 | (str (buffer-substring (point) (1- next))) | |
147 | (val (save-excursion | |
148 | (set-buffer save-buf) | |
149 | (math-read-plain-expr str)))) | |
150 | (if (eq (car-safe val) 'error) | |
151 | (error "Can't yank that line: %s" (nth 2 val)) | |
bf77c646 | 152 | val)))))) |
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153 | |
154 | (defun calc-trail-marker (str) | |
155 | (interactive "sText to insert in trail: ") | |
156 | (calc-with-trail-buffer | |
157 | (forward-line 1) | |
158 | (let ((buffer-read-only nil)) | |
159 | (insert "---- " str "\n")) | |
160 | (forward-line -1) | |
bf77c646 | 161 | (calc-trail-here))) |
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162 | |
163 | (defun calc-trail-kill (n) | |
164 | (interactive "p") | |
165 | (calc-with-trail-buffer | |
166 | (let ((buffer-read-only nil)) | |
167 | (save-restriction | |
168 | (narrow-to-region ; don't delete "Emacs Trail" header | |
169 | (save-excursion | |
170 | (goto-char (point-min)) | |
171 | (forward-line 1) | |
172 | (point)) | |
173 | (point-max)) | |
174 | (kill-line n))) | |
bf77c646 | 175 | (calc-trail-here))) |
136211a9 | 176 | |
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177 | (provide 'calc-trail) |
178 | ||
cbee283d | 179 | ;; arch-tag: 59b76655-d882-4aab-a3ee-b83870e530d0 |
bf77c646 | 180 | ;;; calc-trail.el ends here |