Mercurial > hg > xemacs-beta
annotate src/window-impl.h @ 5518:3cc7470ea71c
gnuclient: if TMPDIR was set and connect failed, try again with /tmp
2011-06-03 Aidan Kehoe <kehoea@parhasard.net>
* gnuslib.c (connect_to_unix_server):
Retry with /tmp as a directory in which to search for Unix sockets
if an attempt to connect with some other directory failed (which
may be because gnuclient and gnuserv don't share an environment
value for TMPDIR, or because gnuserv was compiled with USE_TMPDIR
turned off).
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Fri, 03 Jun 2011 18:40:57 +0100 |
| parents | 308d34e9f07d |
| children | 56144c8593a8 |
| rev | line source |
|---|---|
| 872 | 1 /* Window definitions for XEmacs. |
| 2 Copyright (C) 1985, 1986, 1992, 1993, 1994, 1995 | |
| 3 Free Software Foundation, Inc. | |
| 4 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 5 Copyright (C) 1995, 1996, 2002 Ben Wing. | |
| 6 Copyright (C) 1996 Chuck Thompson. | |
| 7 | |
| 8 This file is part of XEmacs. | |
| 9 | |
|
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10 XEmacs is free software: you can redistribute it and/or modify it |
| 872 | 11 under the terms of the GNU General Public License as published by the |
|
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12 Free Software Foundation, either version 3 of the License, or (at your |
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13 option) any later version. |
| 872 | 14 |
| 15 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
|
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21 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 872 | 22 |
| 23 /* Synched up with: FSF 19.30. */ | |
| 24 | |
| 25 #ifndef INCLUDED_window_impl_h_ | |
| 26 #define INCLUDED_window_impl_h_ | |
| 27 | |
| 28 #include "window.h" | |
| 29 | |
| 30 /* All windows in use are arranged into a tree, with pointers up and down. | |
| 31 | |
| 32 Windows that are leaves of the tree are actually displayed | |
| 33 and show the contents of buffers. Windows that are not leaves | |
| 34 are used for representing the way groups of leaf windows are | |
| 35 arranged on the frame. Leaf windows never become non-leaves. | |
| 36 They are deleted only by calling delete-window on them (but | |
| 37 this can be done implicitly). Combination windows can be created | |
| 38 and deleted at any time. | |
| 39 | |
| 40 A leaf window has a non-nil buffer field, and also | |
| 41 has markers in its start and pointm fields. Non-leaf windows | |
| 42 have nil in these fields. | |
| 43 | |
| 44 Non-leaf windows are either vertical or horizontal combinations. | |
| 45 | |
| 46 A vertical combination window has children that are arranged on the frame | |
| 47 one above the next. Its vchild field points to the uppermost child. | |
| 48 The parent field of each of the children points to the vertical | |
| 49 combination window. The next field of each child points to the | |
| 50 child below it, or is nil for the lowest child. The prev field | |
| 51 of each child points to the child above it, or is nil for the | |
| 52 highest child. | |
| 53 | |
| 54 A horizontal combination window has children that are side by side. | |
| 55 Its hchild field points to the leftmost child. In each child | |
| 56 the next field points to the child to the right and the prev field | |
| 57 points to the child to the left. | |
| 58 | |
| 59 The children of a vertical combination window may be leaf windows | |
| 60 or horizontal combination windows. The children of a horizontal | |
| 61 combination window may be leaf windows or vertical combination windows. | |
| 62 | |
| 63 At the top of the tree are two windows which have nil as parent. | |
| 64 The second of these is minibuf_window. The first one manages all | |
| 65 the frame area that is not minibuffer, and is called the root window. | |
| 66 Different windows can be the root at different times; | |
| 67 initially the root window is a leaf window, but if more windows | |
| 68 are created then that leaf window ceases to be root and a newly | |
| 69 made combination window becomes root instead. | |
| 70 | |
| 71 In any case, on screens which have an ordinary window and a | |
| 72 minibuffer, prev of the minibuf window is the root window and next of | |
| 73 the root window is the minibuf window. On minibufferless screens or | |
| 74 minibuffer-only screens, the root window and the minibuffer window are | |
| 75 one and the same, so its prev and next members are nil. | |
| 76 | |
| 77 A dead window has the `dead' flag set on it. Note that unlike other | |
| 78 dead objects, dead windows can be made live again through restoring a | |
| 79 window configuration. This means that the values in a dead window | |
| 80 need to be preserved, except for those that are reconstructed by from | |
| 81 the window configuration. */ | |
| 82 | |
| 83 struct window | |
| 84 { | |
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85 NORMAL_LISP_OBJECT_HEADER header; |
| 872 | 86 |
| 87 /* The upper left corner coordinates of this window, | |
| 88 as integers (pixels) relative to upper left corner of frame = 0, 0 */ | |
| 89 int pixel_left; | |
| 90 int pixel_top; | |
| 91 /* The size of the window (in pixels) */ | |
| 92 int pixel_height; | |
| 93 int pixel_width; | |
| 94 | |
| 95 /* Number of columns display within the window is scrolled to the left. */ | |
| 96 int hscroll; | |
| 97 /* Idem for the window's modeline */ | |
| 98 Charcount modeline_hscroll; | |
| 99 /* Amount to clip off the top line for pixel-based scrolling. Point | |
| 100 will remain constant but this will be incremented to | |
| 101 incrementally shift lines up. */ | |
| 102 int top_yoffset; | |
| 103 /* Amount to clip off the left of the lines for pixel-based | |
| 104 scrolling. Hscroll will remain constant but this will be | |
| 105 incremented to incrementally shift lines left.*/ | |
| 106 int left_xoffset; | |
| 107 | |
| 108 /* face cache elements correct for this window and its current buffer */ | |
| 109 face_cachel_dynarr *face_cachels; | |
| 110 /* glyph cache elements correct for this window and its current buffer */ | |
| 111 glyph_cachel_dynarr *glyph_cachels; | |
| 112 /* List of starting positions for display lines. Only valid if | |
| 113 buffer has not changed. */ | |
| 114 line_start_cache_dynarr *line_start_cache; | |
| 115 int line_cache_validation_override; | |
| 116 | |
| 117 /* Length of longest line currently displayed. Used to control the | |
| 118 width of the horizontal scrollbars. */ | |
| 119 int max_line_len; | |
| 120 | |
| 121 /* Frame coords of point at that time */ | |
| 122 int last_point_x[3]; | |
| 123 int last_point_y[3]; | |
| 124 | |
| 125 /* Number of characters in buffer past bottom of window, | |
| 126 as of last redisplay that finished. */ | |
| 127 /* need one for each set of display structures */ | |
| 128 int window_end_pos[3]; | |
| 129 | |
| 130 /* Set by the extent code when extents in the gutter are changed. */ | |
| 131 int gutter_extent_modiff[4]; | |
| 132 | |
| 133 /* Set by redisplay to the last position seen. This is used | |
| 134 to implement the redisplay-end-trigger-functions. */ | |
| 135 Charbpos last_redisplay_pos; | |
| 136 | |
| 137 #define WINDOW_SLOT_DECLARATION | |
| 138 #define WINDOW_SLOT(slot) Lisp_Object slot; | |
| 139 #include "winslots.h" | |
| 140 | |
| 141 /* one-bit flags: */ | |
| 142 | |
| 143 /* marker used when restoring a window configuration */ | |
| 144 unsigned int config_mark :1; | |
| 145 /* Non-zero means window was dead. */ | |
| 146 unsigned int dead :1; | |
| 147 /* Non-zero means next redisplay must use the value of start | |
| 148 set up for it in advance. Set by scrolling commands. */ | |
| 149 unsigned int force_start :1; | |
| 150 /* Non-zero means must regenerate modeline of this window */ | |
| 151 unsigned int redo_modeline :1; | |
| 152 /* Non-zero means current value of `start' | |
| 153 was the beginning of a line when it was chosen. */ | |
| 154 unsigned int start_at_line_beg :1; | |
| 155 /* new redisplay flag */ | |
| 156 unsigned int windows_changed :1; | |
| 157 unsigned int shadow_thickness_changed :1; | |
| 158 /* Vertical divider flag and validity of it */ | |
| 159 unsigned int need_vertical_divider_p :1; | |
| 160 unsigned int need_vertical_divider_valid_p :1; | |
| 161 }; | |
| 162 | |
| 163 #define CURRENT_DISP 0 | |
| 164 #define DESIRED_DISP 1 | |
| 165 #define CMOTION_DISP 2 | |
| 166 | |
| 167 struct window_mirror | |
| 168 { | |
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169 NORMAL_LISP_OBJECT_HEADER header; |
| 872 | 170 |
| 171 /* Frame this mirror is on. */ | |
| 172 struct frame *frame; | |
| 173 | |
| 174 /* Following child (to right or down) at same level of tree */ | |
| 175 struct window_mirror *next; | |
| 176 | |
| 177 /* There is no prev field because we never traverse this structure | |
| 178 backwards. Same goes for the parent field. */ | |
| 179 | |
| 180 /* First child of this window. */ | |
| 181 /* vchild is used if this is a vertical combination, | |
| 182 hchild if this is a horizontal combination. */ | |
| 183 struct window_mirror *hchild, *vchild; | |
| 184 | |
| 185 /* Dynamic array of display lines */ | |
| 186 display_line_dynarr *current_display_lines; | |
| 187 display_line_dynarr *desired_display_lines; | |
| 188 | |
| 189 /* Buffer current_display_lines represent. */ | |
| 190 struct buffer *buffer; | |
| 191 | |
| 192 #ifdef HAVE_SCROLLBARS | |
| 193 /* Scrollbars associated with window, if any. */ | |
| 194 struct scrollbar_instance *scrollbar_vertical_instance; | |
| 195 struct scrollbar_instance *scrollbar_horizontal_instance; | |
| 196 #endif /* HAVE_SCROLLBARS */ | |
| 197 | |
| 198 /* Flag indicating whether a subwindow is currently being displayed. */ | |
| 199 unsigned int subwindows_being_displayed :1; | |
| 200 | |
| 201 /* Keep track of the truncation status in this window so we can | |
| 202 detect when it has changed. #### Magic variables would be a huge | |
| 203 win here. */ | |
| 204 unsigned int truncate_win :1; | |
| 205 }; | |
| 206 | |
| 207 /* Redefine basic properties more efficiently */ | |
| 208 | |
| 209 #undef WINDOW_LIVE_P | |
| 210 #define WINDOW_LIVE_P(x) (!(x)->dead) | |
| 211 #undef WINDOW_FRAME | |
| 212 #define WINDOW_FRAME(w) ((w)->frame) | |
| 213 #undef WINDOW_BUFFER | |
| 214 #define WINDOW_BUFFER(w) ((w)->buffer) | |
| 215 | |
| 216 /* 1 if W is a minibuffer window. */ | |
| 217 #define MINI_WINDOW_P(W) (!NILP ((W)->mini_p)) | |
| 218 | |
| 219 /* 1 if we are dealing with a parentless window (this includes the | |
| 220 root window on a frame and the minibuffer window; both of these | |
| 221 are siblings). */ | |
| 222 #define TOP_LEVEL_WINDOW_P(w) NILP ((w)->parent) | |
| 223 | |
| 224 /* Set all redisplay flags indicating a window has changed */ | |
| 225 #define MARK_WINDOWS_CHANGED(w) do { \ | |
| 226 (w)->windows_changed = 1; \ | |
| 227 if (!NILP (w->frame)) \ | |
| 228 { \ | |
| 229 struct frame *mwc_frame = XFRAME (w->frame); \ | |
| 230 MARK_FRAME_WINDOWS_CHANGED (mwc_frame); \ | |
| 231 } \ | |
| 232 else \ | |
| 233 windows_changed = 1; \ | |
| 234 } while (0) | |
| 235 | |
| 236 /* #### This should be fixed not to call MARK_FRAME_CHANGED because | |
| 237 faces are cached per window. Also, other code which changes window's | |
| 238 face should use this macro. | |
| 239 */ | |
| 240 #define MARK_WINDOW_FACES_CHANGED(w) \ | |
| 241 MARK_FRAME_FACES_CHANGED (XFRAME ((w)->frame)) | |
| 242 | |
| 243 #define WINDOW_TTY_P(w) FRAME_TTY_P (XFRAME ((w)->frame)) | |
| 244 #define WINDOW_X_P(w) FRAME_X_P (XFRAME ((w)->frame)) | |
| 245 #define WINDOW_NS_P(w) FRAME_NS_P (XFRAME ((w)->frame)) | |
| 246 #define WINDOW_WIN_P(w) FRAME_WIN_P (XFRAME ((w)->frame)) | |
| 247 | |
| 248 /* XEmacs window size and positioning macros. */ | |
| 249 #define WINDOW_TOP(w) ((w)->pixel_top) | |
| 250 #define WINDOW_TEXT_TOP(w) (WINDOW_TOP (w) + window_top_gutter_height (w)) | |
| 251 #define WINDOW_TEXT_TOP_CLIP(w) ((w)->top_yoffset) | |
| 252 #define WINDOW_BOTTOM(w) ((w)->pixel_top + (w)->pixel_height) | |
| 253 #define WINDOW_TEXT_BOTTOM(w) (WINDOW_BOTTOM (w) - window_bottom_gutter_height (w)) | |
| 254 #define WINDOW_LEFT(w) ((w)->pixel_left) | |
| 255 #define WINDOW_TEXT_LEFT(w) (WINDOW_LEFT (w) + window_left_gutter_width (w, 0)) | |
| 256 #define WINDOW_MODELINE_LEFT(w) \ | |
| 257 (WINDOW_LEFT (w) + window_left_gutter_width (w, 1)) | |
| 258 #define WINDOW_RIGHT(w) ((w)->pixel_left + (w)->pixel_width) | |
| 259 #define WINDOW_TEXT_RIGHT(w) \ | |
| 260 (WINDOW_RIGHT (w) - window_right_gutter_width (w, 0)) | |
| 261 #define WINDOW_MODELINE_RIGHT(w) \ | |
| 262 (WINDOW_RIGHT (w) - window_right_gutter_width (w, 1)) | |
| 263 | |
| 264 #define WINDOW_HEIGHT(w) ((w)->pixel_height) | |
| 265 #define WINDOW_TEXT_HEIGHT(w) (WINDOW_TEXT_BOTTOM (w) - WINDOW_TEXT_TOP (w)) | |
| 266 #define WINDOW_WIDTH(w) ((w)->pixel_width) | |
| 267 #define WINDOW_TEXT_WIDTH(w) (WINDOW_TEXT_RIGHT (w) - WINDOW_TEXT_LEFT (w)) | |
| 268 | |
| 269 #define WINDOW_HAS_MODELINE_P(w) (!NILP (w->has_modeline_p)) | |
| 270 | |
| 271 #define MODELINE_OFF_SHADOW_THICKNESS_ADJUSTED(win) \ | |
| 272 abs ((!WINDOW_HAS_MODELINE_P (win) \ | |
| 273 ? ((XINT (win->modeline_shadow_thickness) > 1) \ | |
| 274 ? XINT (win->modeline_shadow_thickness) - 1 \ | |
| 275 : ((XINT (win->modeline_shadow_thickness) < -1) \ | |
| 276 ? XINT (win->modeline_shadow_thickness) + 1 \ | |
| 277 : XINT (win->modeline_shadow_thickness))) \ | |
| 278 : XINT (win->modeline_shadow_thickness))) | |
| 279 | |
| 280 #define MODELINE_SHADOW_THICKNESS(win) \ | |
| 281 (MODELINE_OFF_SHADOW_THICKNESS_ADJUSTED (win) > 10 \ | |
| 282 ? 10 \ | |
| 283 : MODELINE_OFF_SHADOW_THICKNESS_ADJUSTED (win)) | |
| 284 | |
| 285 #endif /* INCLUDED_window_impl_h_ */ |