Annotation of src/usr.bin/tmux/window-copy.c, Revision 1.30
1.30 ! nicm 1: /* $OpenBSD: window-copy.c,v 1.29 2009/10/11 07:01:10 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
1.21 nicm 21: #include <stdlib.h>
1.1 nicm 22: #include <string.h>
23:
24: #include "tmux.h"
25:
26: struct screen *window_copy_init(struct window_pane *);
27: void window_copy_free(struct window_pane *);
28: void window_copy_resize(struct window_pane *, u_int, u_int);
29: void window_copy_key(struct window_pane *, struct client *, int);
1.21 nicm 30: int window_copy_key_input(struct window_pane *, int);
1.1 nicm 31: void window_copy_mouse(
1.29 nicm 32: struct window_pane *, struct client *, struct mouse_event *);
1.1 nicm 33:
34: void window_copy_redraw_lines(struct window_pane *, u_int, u_int);
35: void window_copy_redraw_screen(struct window_pane *);
36: void window_copy_write_line(
37: struct window_pane *, struct screen_write_ctx *, u_int);
38: void window_copy_write_lines(
39: struct window_pane *, struct screen_write_ctx *, u_int, u_int);
40:
1.21 nicm 41: void window_copy_scroll_to(struct window_pane *, u_int, u_int);
42: int window_copy_search_compare(
43: struct grid *, u_int, u_int, struct grid *, u_int);
44: int window_copy_search_lr(
45: struct grid *, struct grid *, u_int *, u_int, u_int, u_int);
46: int window_copy_search_rl(
47: struct grid *, struct grid *, u_int *, u_int, u_int, u_int);
48: void window_copy_search_up(struct window_pane *, const char *);
49: void window_copy_search_down(struct window_pane *, const char *);
50: void window_copy_goto_line(struct window_pane *, const char *);
1.18 nicm 51: void window_copy_update_cursor(struct window_pane *, u_int, u_int);
1.1 nicm 52: void window_copy_start_selection(struct window_pane *);
53: int window_copy_update_selection(struct window_pane *);
54: void window_copy_copy_selection(struct window_pane *, struct client *);
55: void window_copy_copy_line(
56: struct window_pane *, char **, size_t *, u_int, u_int, u_int);
57: int window_copy_is_space(struct window_pane *, u_int, u_int);
58: u_int window_copy_find_length(struct window_pane *, u_int);
59: void window_copy_cursor_start_of_line(struct window_pane *);
1.6 nicm 60: void window_copy_cursor_back_to_indentation(struct window_pane *);
1.1 nicm 61: void window_copy_cursor_end_of_line(struct window_pane *);
62: void window_copy_cursor_left(struct window_pane *);
63: void window_copy_cursor_right(struct window_pane *);
1.28 nicm 64: void window_copy_cursor_up(struct window_pane *, int);
65: void window_copy_cursor_down(struct window_pane *, int);
1.1 nicm 66: void window_copy_cursor_next_word(struct window_pane *);
67: void window_copy_cursor_previous_word(struct window_pane *);
68: void window_copy_scroll_up(struct window_pane *, u_int);
69: void window_copy_scroll_down(struct window_pane *, u_int);
70:
71: const struct window_mode window_copy_mode = {
72: window_copy_init,
73: window_copy_free,
74: window_copy_resize,
75: window_copy_key,
76: window_copy_mouse,
77: NULL,
78: };
79:
1.21 nicm 80: enum window_copy_input_type {
81: WINDOW_COPY_OFF,
82: WINDOW_COPY_SEARCHUP,
83: WINDOW_COPY_SEARCHDOWN,
84: WINDOW_COPY_GOTOLINE,
85: };
86:
1.1 nicm 87: struct window_copy_mode_data {
88: struct screen screen;
89:
1.21 nicm 90: struct mode_key_data mdata;
91:
92: u_int oy;
93:
94: u_int selx;
95: u_int sely;
1.1 nicm 96:
1.21 nicm 97: u_int cx;
98: u_int cy;
1.1 nicm 99:
1.25 nicm 100: u_int lastcx; /* position in last line with content */
101: u_int lastsx; /* size of last line with content */
102:
1.21 nicm 103: enum window_copy_input_type inputtype;
104: const char *inputprompt;
105: char *inputstr;
1.1 nicm 106:
1.21 nicm 107: enum window_copy_input_type searchtype;
108: char *searchstr;
1.1 nicm 109: };
110:
111: struct screen *
112: window_copy_init(struct window_pane *wp)
113: {
114: struct window_copy_mode_data *data;
115: struct screen *s;
116: struct screen_write_ctx ctx;
117: u_int i;
1.10 nicm 118: int keys;
1.1 nicm 119:
120: wp->modedata = data = xmalloc(sizeof *data);
121: data->oy = 0;
122: data->cx = wp->base.cx;
123: data->cy = wp->base.cy;
124:
1.25 nicm 125: data->lastcx = 0;
126: data->lastsx = 0;
127:
1.21 nicm 128: data->inputtype = WINDOW_COPY_OFF;
129: data->inputprompt = NULL;
130: data->inputstr = xstrdup("");
131:
132: data->searchtype = WINDOW_COPY_OFF;
133: data->searchstr = NULL;
134:
1.1 nicm 135: s = &data->screen;
136: screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
1.13 nicm 137: if (options_get_number(&wp->window->options, "mode-mouse"))
138: s->mode |= MODE_MOUSE;
1.1 nicm 139:
1.10 nicm 140: keys = options_get_number(&wp->window->options, "mode-keys");
141: if (keys == MODEKEY_EMACS)
1.12 nicm 142: mode_key_init(&data->mdata, &mode_key_tree_emacs_copy);
1.10 nicm 143: else
1.12 nicm 144: mode_key_init(&data->mdata, &mode_key_tree_vi_copy);
1.1 nicm 145:
146: s->cx = data->cx;
147: s->cy = data->cy;
148:
149: screen_write_start(&ctx, NULL, s);
150: for (i = 0; i < screen_size_y(s); i++)
151: window_copy_write_line(wp, &ctx, i);
152: screen_write_cursormove(&ctx, data->cx, data->cy);
153: screen_write_stop(&ctx);
154:
155: return (s);
156: }
157:
158: void
159: window_copy_free(struct window_pane *wp)
160: {
161: struct window_copy_mode_data *data = wp->modedata;
162:
1.21 nicm 163: if (data->searchstr != NULL)
164: xfree(data->searchstr);
165: xfree(data->inputstr);
166:
1.1 nicm 167: screen_free(&data->screen);
1.21 nicm 168:
1.1 nicm 169: xfree(data);
170: }
171:
172: void
173: window_copy_pageup(struct window_pane *wp)
174: {
175: struct window_copy_mode_data *data = wp->modedata;
176: struct screen *s = &data->screen;
1.19 nicm 177: u_int n;
1.1 nicm 178:
1.19 nicm 179: n = 1;
180: if (screen_size_y(s) > 2)
181: n = screen_size_y(s) - 2;
182: if (data->oy + n > screen_hsize(&wp->base))
1.1 nicm 183: data->oy = screen_hsize(&wp->base);
184: else
1.19 nicm 185: data->oy += n;
1.1 nicm 186: window_copy_update_selection(wp);
187: window_copy_redraw_screen(wp);
188: }
189:
190: void
191: window_copy_resize(struct window_pane *wp, u_int sx, u_int sy)
192: {
193: struct window_copy_mode_data *data = wp->modedata;
194: struct screen *s = &data->screen;
195: struct screen_write_ctx ctx;
196:
197: screen_resize(s, sx, sy);
1.18 nicm 198:
199: if (data->cy > sy - 1)
200: data->cy = sy - 1;
201: if (data->cx > sx)
202: data->cx = sx;
203:
204: screen_clear_selection(&data->screen);
205:
1.1 nicm 206: screen_write_start(&ctx, NULL, s);
207: window_copy_write_lines(wp, &ctx, 0, screen_size_y(s) - 1);
208: screen_write_stop(&ctx);
1.18 nicm 209:
1.17 nicm 210: window_copy_redraw_screen(wp);
1.1 nicm 211: }
212:
213: void
214: window_copy_key(struct window_pane *wp, struct client *c, int key)
215: {
216: struct window_copy_mode_data *data = wp->modedata;
217: struct screen *s = &data->screen;
1.19 nicm 218: u_int n;
1.21 nicm 219: int keys;
220:
221: if (data->inputtype != WINDOW_COPY_OFF) {
222: if (window_copy_key_input(wp, key) != 0)
223: goto input_off;
224: return;
225: }
1.1 nicm 226:
227: switch (mode_key_lookup(&data->mdata, key)) {
1.11 nicm 228: case MODEKEYCOPY_CANCEL:
1.1 nicm 229: window_pane_reset_mode(wp);
230: break;
1.10 nicm 231: case MODEKEYCOPY_LEFT:
1.1 nicm 232: window_copy_cursor_left(wp);
233: return;
1.10 nicm 234: case MODEKEYCOPY_RIGHT:
1.1 nicm 235: window_copy_cursor_right(wp);
236: return;
1.10 nicm 237: case MODEKEYCOPY_UP:
1.28 nicm 238: window_copy_cursor_up(wp, 0);
1.1 nicm 239: return;
1.10 nicm 240: case MODEKEYCOPY_DOWN:
1.28 nicm 241: window_copy_cursor_down(wp, 0);
1.1 nicm 242: return;
1.28 nicm 243: case MODEKEYCOPY_SCROLLUP:
244: window_copy_cursor_up(wp, 1);
245: break;
246: case MODEKEYCOPY_SCROLLDOWN:
247: window_copy_cursor_down(wp, 1);
248: break;
1.10 nicm 249: case MODEKEYCOPY_PREVIOUSPAGE:
1.1 nicm 250: window_copy_pageup(wp);
251: break;
1.10 nicm 252: case MODEKEYCOPY_NEXTPAGE:
1.19 nicm 253: n = 1;
254: if (screen_size_y(s) > 2)
255: n = screen_size_y(s) - 2;
1.20 nicm 256: if (data->oy < n)
257: data->oy = 0;
258: else
259: data->oy -= n;
260: window_copy_update_selection(wp);
261: window_copy_redraw_screen(wp);
262: break;
263: case MODEKEYCOPY_HALFPAGEUP:
264: n = screen_size_y(s) / 2;
265: if (data->oy + n > screen_hsize(&wp->base))
266: data->oy = screen_hsize(&wp->base);
267: else
268: data->oy += n;
269: window_copy_update_selection(wp);
270: window_copy_redraw_screen(wp);
271: break;
272: case MODEKEYCOPY_HALFPAGEDOWN:
273: n = screen_size_y(s) / 2;
1.19 nicm 274: if (data->oy < n)
1.1 nicm 275: data->oy = 0;
276: else
1.19 nicm 277: data->oy -= n;
1.30 ! nicm 278: window_copy_update_selection(wp);
! 279: window_copy_redraw_screen(wp);
! 280: break;
! 281: case MODEKEYCOPY_TOPLINE:
! 282: data->cx = 0;
! 283: data->cy = 0;
! 284: window_copy_update_selection(wp);
! 285: window_copy_redraw_screen(wp);
! 286: break;
! 287: case MODEKEYCOPY_MIDDLELINE:
! 288: data->cx = 0;
! 289: data->cy = (screen_size_y(s) - 1) / 2;
! 290: window_copy_update_selection(wp);
! 291: window_copy_redraw_screen(wp);
! 292: break;
! 293: case MODEKEYCOPY_BOTTOMLINE:
! 294: data->cx = 0;
! 295: data->cy = screen_size_y(s) - 1;
1.1 nicm 296: window_copy_update_selection(wp);
297: window_copy_redraw_screen(wp);
298: break;
1.10 nicm 299: case MODEKEYCOPY_STARTSELECTION:
1.1 nicm 300: window_copy_start_selection(wp);
1.7 nicm 301: window_copy_redraw_screen(wp);
1.1 nicm 302: break;
1.10 nicm 303: case MODEKEYCOPY_CLEARSELECTION:
1.1 nicm 304: screen_clear_selection(&data->screen);
305: window_copy_redraw_screen(wp);
306: break;
1.10 nicm 307: case MODEKEYCOPY_COPYSELECTION:
1.1 nicm 308: if (c != NULL && c->session != NULL) {
309: window_copy_copy_selection(wp, c);
310: window_pane_reset_mode(wp);
311: }
312: break;
1.10 nicm 313: case MODEKEYCOPY_STARTOFLINE:
1.1 nicm 314: window_copy_cursor_start_of_line(wp);
315: break;
1.10 nicm 316: case MODEKEYCOPY_BACKTOINDENTATION:
1.6 nicm 317: window_copy_cursor_back_to_indentation(wp);
318: break;
1.10 nicm 319: case MODEKEYCOPY_ENDOFLINE:
1.1 nicm 320: window_copy_cursor_end_of_line(wp);
321: break;
1.10 nicm 322: case MODEKEYCOPY_NEXTWORD:
1.1 nicm 323: window_copy_cursor_next_word(wp);
324: break;
1.10 nicm 325: case MODEKEYCOPY_PREVIOUSWORD:
1.1 nicm 326: window_copy_cursor_previous_word(wp);
327: break;
1.21 nicm 328: case MODEKEYCOPY_SEARCHUP:
329: data->inputtype = WINDOW_COPY_SEARCHUP;
330: data->inputprompt = "Search Up";
331: goto input_on;
332: case MODEKEYCOPY_SEARCHDOWN:
333: data->inputtype = WINDOW_COPY_SEARCHDOWN;
334: data->inputprompt = "Search Down";
335: goto input_on;
336: case MODEKEYCOPY_SEARCHAGAIN:
337: switch (data->searchtype) {
338: case WINDOW_COPY_OFF:
339: case WINDOW_COPY_GOTOLINE:
340: break;
341: case WINDOW_COPY_SEARCHUP:
342: window_copy_search_up(wp, data->searchstr);
343: break;
344: case WINDOW_COPY_SEARCHDOWN:
345: window_copy_search_down(wp, data->searchstr);
346: break;
347: }
348: break;
349: case MODEKEYCOPY_GOTOLINE:
350: data->inputtype = WINDOW_COPY_GOTOLINE;
351: data->inputprompt = "Goto Line";
352: *data->inputstr = '\0';
353: goto input_on;
354: default:
355: break;
356: }
357:
358: return;
359:
360: input_on:
361: keys = options_get_number(&wp->window->options, "mode-keys");
362: if (keys == MODEKEY_EMACS)
363: mode_key_init(&data->mdata, &mode_key_tree_emacs_edit);
364: else
365: mode_key_init(&data->mdata, &mode_key_tree_vi_edit);
366:
367: window_copy_redraw_lines(wp, screen_size_y(s) - 1, 1);
368: return;
369:
370: input_off:
371: keys = options_get_number(&wp->window->options, "mode-keys");
372: if (keys == MODEKEY_EMACS)
373: mode_key_init(&data->mdata, &mode_key_tree_emacs_copy);
374: else
375: mode_key_init(&data->mdata, &mode_key_tree_vi_copy);
376:
377: data->inputtype = WINDOW_COPY_OFF;
378: data->inputprompt = NULL;
379:
380: window_copy_redraw_lines(wp, screen_size_y(s) - 1, 1);
381: }
382:
383: int
384: window_copy_key_input(struct window_pane *wp, int key)
385: {
386: struct window_copy_mode_data *data = wp->modedata;
387: struct screen *s = &data->screen;
388: size_t inputlen;
389:
390: switch (mode_key_lookup(&data->mdata, key)) {
391: case MODEKEYEDIT_CANCEL:
392: return (-1);
393: case MODEKEYEDIT_BACKSPACE:
394: inputlen = strlen(data->inputstr);
395: if (inputlen > 0)
396: data->inputstr[inputlen - 1] = '\0';
1.22 nicm 397: break;
398: case MODEKEYEDIT_DELETELINE:
399: *data->inputstr = '\0';
1.21 nicm 400: break;
401: case MODEKEYEDIT_ENTER:
402: switch (data->inputtype) {
403: case WINDOW_COPY_OFF:
404: break;
405: case WINDOW_COPY_SEARCHUP:
406: window_copy_search_up(wp, data->inputstr);
407: data->searchtype = data->inputtype;
408: data->searchstr = xstrdup(data->inputstr);
409: break;
410: case WINDOW_COPY_SEARCHDOWN:
411: window_copy_search_down(wp, data->inputstr);
412: data->searchtype = data->inputtype;
413: data->searchstr = xstrdup(data->inputstr);
414: break;
415: case WINDOW_COPY_GOTOLINE:
416: window_copy_goto_line(wp, data->inputstr);
417: *data->inputstr = '\0';
418: break;
419: }
420: return (1);
421: case MODEKEY_OTHER:
422: if (key < 32 || key > 126)
423: break;
424: inputlen = strlen(data->inputstr) + 2;
425:
426: data->inputstr = xrealloc(data->inputstr, 1, inputlen);
427: data->inputstr[inputlen - 2] = key;
428: data->inputstr[inputlen - 1] = '\0';
429: break;
1.1 nicm 430: default:
431: break;
432: }
1.21 nicm 433:
434: window_copy_redraw_lines(wp, screen_size_y(s) - 1, 1);
435: return (0);
1.1 nicm 436: }
437:
438: void
1.29 nicm 439: window_copy_mouse(
440: struct window_pane *wp, unused struct client *c, struct mouse_event *m)
1.1 nicm 441: {
442: struct window_copy_mode_data *data = wp->modedata;
443: struct screen *s = &data->screen;
444:
1.29 nicm 445: if ((m->b & 3) == 3)
1.1 nicm 446: return;
1.29 nicm 447: if (m->x >= screen_size_x(s))
1.1 nicm 448: return;
1.29 nicm 449: if (m->y >= screen_size_y(s))
1.1 nicm 450: return;
451:
1.29 nicm 452: window_copy_update_cursor(wp, m->x, m->y);
1.1 nicm 453: if (window_copy_update_selection(wp))
454: window_copy_redraw_screen(wp);
455: }
456:
457: void
1.21 nicm 458: window_copy_scroll_to(struct window_pane *wp, u_int px, u_int py)
459: {
460: struct window_copy_mode_data *data = wp->modedata;
461: struct screen *s = &wp->base;
462: struct grid *gd = s->grid;
463: u_int offset, gap;
464:
465: data->cx = px;
466:
467: gap = gd->sy / 4;
468: if (py < gd->sy) {
469: offset = 0;
470: data->cy = py;
471: } else if (py > gd->hsize + gd->sy - gap) {
472: offset = gd->hsize;
473: data->cy = py - gd->hsize;
474: } else {
475: offset = py + gap - gd->sy;
476: data->cy = py - offset;
477: }
478: data->oy = gd->hsize - offset;
479:
480: window_copy_redraw_screen(wp);
481: }
482:
483: int
484: window_copy_search_compare(
485: struct grid *gd, u_int px, u_int py, struct grid *sgd, u_int spx)
486: {
487: const struct grid_cell *gc, *sgc;
488: const struct grid_utf8 *gu, *sgu;
489:
490: gc = grid_peek_cell(gd, px, py);
491: sgc = grid_peek_cell(sgd, spx, 0);
492:
493: if ((gc->flags & GRID_FLAG_UTF8) != (sgc->flags & GRID_FLAG_UTF8))
494: return (0);
495:
496: if (gc->flags & GRID_FLAG_UTF8) {
497: gu = grid_peek_utf8(gd, px, py);
498: sgu = grid_peek_utf8(sgd, spx, 0);
499: if (memcmp(gu->data, sgu->data, UTF8_SIZE) == 0)
500: return (1);
501: } else {
502: if (gc->data == sgc->data)
503: return (1);
504: }
505: return (0);
506: }
507:
508: int
509: window_copy_search_lr(struct grid *gd,
510: struct grid *sgd, u_int *ppx, u_int py, u_int first, u_int last)
511: {
512: u_int ax, bx, px;
513:
514: for (ax = first; ax < last; ax++) {
515: if (ax + sgd->sx >= gd->sx)
516: break;
517: for (bx = 0; bx < sgd->sx; bx++) {
518: px = ax + bx;
519: if (!window_copy_search_compare(gd, px, py, sgd, bx))
520: break;
521: }
522: if (bx == sgd->sx) {
523: *ppx = ax;
524: return (1);
525: }
526: }
527: return (0);
528: }
529:
530: int
531: window_copy_search_rl(struct grid *gd,
532: struct grid *sgd, u_int *ppx, u_int py, u_int first, u_int last)
533: {
534: u_int ax, bx, px;
535:
536: for (ax = last + 1; ax > first; ax--) {
1.24 nicm 537: if (gd->sx - (ax - 1) < sgd->sx)
538: continue;
1.21 nicm 539: for (bx = 0; bx < sgd->sx; bx++) {
540: px = ax - 1 + bx;
541: if (!window_copy_search_compare(gd, px, py, sgd, bx))
542: break;
543: }
544: if (bx == sgd->sx) {
545: *ppx = ax - 1;
546: return (1);
547: }
548: }
549: return (0);
550: }
551:
552: void
553: window_copy_search_up(struct window_pane *wp, const char *searchstr)
554: {
555: struct window_copy_mode_data *data = wp->modedata;
556: struct screen *s = &wp->base, ss;
557: struct screen_write_ctx ctx;
558: struct grid *gd = s->grid, *sgd;
559: struct grid_cell gc;
560: size_t searchlen;
561: u_int i, last, fx, fy, px;
562: int utf8flag, n, wrapped;
563:
564: if (*searchstr == '\0')
565: return;
566: utf8flag = options_get_number(&wp->window->options, "utf8");
567: searchlen = screen_write_strlen(utf8flag, "%s", searchstr);
568:
569: screen_init(&ss, searchlen, 1, 0);
570: screen_write_start(&ctx, NULL, &ss);
571: memcpy(&gc, &grid_default_cell, sizeof gc);
572: screen_write_nputs(&ctx, -1, &gc, utf8flag, "%s", searchstr);
573: screen_write_stop(&ctx);
574:
575: fx = data->cx;
576: fy = gd->hsize - data->oy + data->cy;
577:
578: if (fx == 0) {
579: if (fy == 0)
580: return;
581: fx = gd->sx - 1;
582: fy--;
583: } else
584: fx--;
585: n = wrapped = 0;
586:
587: retry:
588: sgd = ss.grid;
589: for (i = fy + 1; i > 0; i--) {
590: last = screen_size_x(s);
591: if (i == fy + 1)
592: last = fx;
593: n = window_copy_search_rl(gd, sgd, &px, i - 1, 0, last);
594: if (n) {
595: window_copy_scroll_to(wp, px, i - 1);
596: break;
597: }
598: }
599: if (!n && !wrapped) {
600: fx = gd->sx - 1;
601: fy = gd->hsize + gd->sy - 1;
602: wrapped = 1;
603: goto retry;
604: }
605:
606: screen_free(&ss);
607: }
608:
609: void
610: window_copy_search_down(struct window_pane *wp, const char *searchstr)
611: {
612: struct window_copy_mode_data *data = wp->modedata;
613: struct screen *s = &wp->base, ss;
614: struct screen_write_ctx ctx;
615: struct grid *gd = s->grid, *sgd;
616: struct grid_cell gc;
617: size_t searchlen;
618: u_int i, first, fx, fy, px;
619: int utf8flag, n, wrapped;
620:
621: if (*searchstr == '\0')
622: return;
623: utf8flag = options_get_number(&wp->window->options, "utf8");
624: searchlen = screen_write_strlen(utf8flag, "%s", searchstr);
625:
626: screen_init(&ss, searchlen, 1, 0);
627: screen_write_start(&ctx, NULL, &ss);
628: memcpy(&gc, &grid_default_cell, sizeof gc);
629: screen_write_nputs(&ctx, -1, &gc, utf8flag, "%s", searchstr);
630: screen_write_stop(&ctx);
631:
632: fx = data->cx;
633: fy = gd->hsize - data->oy + data->cy;
634:
635: if (fx == gd->sx - 1) {
636: if (fy == gd->hsize + gd->sy)
637: return;
638: fx = 0;
639: fy++;
640: } else
641: fx++;
642: n = wrapped = 0;
643:
644: retry:
645: sgd = ss.grid;
646: for (i = fy + 1; i < gd->hsize + gd->sy; i++) {
647: first = 0;
648: if (i == fy + 1)
649: first = fx;
650: n = window_copy_search_lr(gd, sgd, &px, i - 1, first, gd->sx);
651: if (n) {
652: window_copy_scroll_to(wp, px, i - 1);
653: break;
654: }
655: }
656: if (!n && !wrapped) {
657: fx = 0;
658: fy = 0;
659: wrapped = 1;
660: goto retry;
661: }
662:
663: screen_free(&ss);
664: }
665:
666: void
667: window_copy_goto_line(struct window_pane *wp, const char *linestr)
668: {
669: struct window_copy_mode_data *data = wp->modedata;
670: const char *errstr;
671: u_int lineno;
672:
673: lineno = strtonum(linestr, 0, screen_hsize(&wp->base), &errstr);
674: if (errstr != NULL)
675: return;
676:
677: data->oy = lineno;
678: window_copy_redraw_screen(wp);
679: }
680:
681: void
1.18 nicm 682: window_copy_write_line(
683: struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
1.1 nicm 684: {
685: struct window_copy_mode_data *data = wp->modedata;
686: struct screen *s = &data->screen;
1.27 nicm 687: struct options *oo = &wp->window->options;
1.1 nicm 688: struct grid_cell gc;
689: char hdr[32];
1.21 nicm 690: size_t last, xoff = 0, size = 0;
691:
692: memcpy(&gc, &grid_default_cell, sizeof gc);
1.27 nicm 693: colour_set_fg(&gc, options_get_number(oo, "mode-fg"));
694: colour_set_bg(&gc, options_get_number(oo, "mode-bg"));
695: gc.attr |= options_get_number(oo, "mode-attr");
1.1 nicm 696:
1.21 nicm 697: last = screen_size_y(s) - 1;
1.1 nicm 698: if (py == 0) {
699: size = xsnprintf(hdr, sizeof hdr,
1.18 nicm 700: "[%u/%u]", data->oy, screen_hsize(&wp->base));
1.1 nicm 701: screen_write_cursormove(ctx, screen_size_x(s) - size, 0);
702: screen_write_puts(ctx, &gc, "%s", hdr);
1.21 nicm 703: } else if (py == last && data->inputtype != WINDOW_COPY_OFF) {
704: xoff = size = xsnprintf(hdr, sizeof hdr,
705: "%s: %s", data->inputprompt, data->inputstr);
706: screen_write_cursormove(ctx, 0, last);
707: screen_write_puts(ctx, &gc, "%s", hdr);
1.1 nicm 708: } else
709: size = 0;
710:
1.21 nicm 711: screen_write_cursormove(ctx, xoff, py);
712: screen_write_copy(ctx, &wp->base, xoff, (screen_hsize(&wp->base) -
1.1 nicm 713: data->oy) + py, screen_size_x(s) - size, 1);
1.18 nicm 714:
715: if (py == data->cy && data->cx == screen_size_x(s)) {
716: memcpy(&gc, &grid_default_cell, sizeof gc);
717: screen_write_cursormove(ctx, screen_size_x(s) - 1, py);
718: screen_write_putc(ctx, &gc, '$');
719: }
1.1 nicm 720: }
721:
722: void
723: window_copy_write_lines(
724: struct window_pane *wp, struct screen_write_ctx *ctx, u_int py, u_int ny)
725: {
726: u_int yy;
727:
728: for (yy = py; yy < py + ny; yy++)
729: window_copy_write_line(wp, ctx, py);
730: }
731:
732: void
733: window_copy_redraw_lines(struct window_pane *wp, u_int py, u_int ny)
734: {
735: struct window_copy_mode_data *data = wp->modedata;
736: struct screen_write_ctx ctx;
737: u_int i;
738:
739: screen_write_start(&ctx, wp, NULL);
740: for (i = py; i < py + ny; i++)
741: window_copy_write_line(wp, &ctx, i);
742: screen_write_cursormove(&ctx, data->cx, data->cy);
743: screen_write_stop(&ctx);
744: }
745:
746: void
747: window_copy_redraw_screen(struct window_pane *wp)
748: {
749: struct window_copy_mode_data *data = wp->modedata;
750:
751: window_copy_redraw_lines(wp, 0, screen_size_y(&data->screen));
752: }
753:
754: void
1.18 nicm 755: window_copy_update_cursor(struct window_pane *wp, u_int cx, u_int cy)
1.1 nicm 756: {
757: struct window_copy_mode_data *data = wp->modedata;
1.18 nicm 758: struct screen *s = &data->screen;
1.1 nicm 759: struct screen_write_ctx ctx;
1.18 nicm 760: u_int old_cx, old_cy;
1.1 nicm 761:
1.18 nicm 762: old_cx = data->cx; old_cy = data->cy;
763: data->cx = cx; data->cy = cy;
764: if (old_cx == screen_size_x(s))
765: window_copy_redraw_lines(wp, old_cy, 1);
766: if (data->cx == screen_size_x(s))
767: window_copy_redraw_lines(wp, data->cy, 1);
768: else {
769: screen_write_start(&ctx, wp, NULL);
770: screen_write_cursormove(&ctx, data->cx, data->cy);
771: screen_write_stop(&ctx);
772: }
1.1 nicm 773: }
774:
775: void
776: window_copy_start_selection(struct window_pane *wp)
777: {
778: struct window_copy_mode_data *data = wp->modedata;
779: struct screen *s = &data->screen;
780:
1.18 nicm 781: data->selx = data->cx;
1.1 nicm 782: data->sely = screen_hsize(&wp->base) + data->cy - data->oy;
783:
784: s->sel.flag = 1;
785: window_copy_update_selection(wp);
786: }
787:
788: int
789: window_copy_update_selection(struct window_pane *wp)
790: {
791: struct window_copy_mode_data *data = wp->modedata;
792: struct screen *s = &data->screen;
1.27 nicm 793: struct options *oo = &wp->window->options;
1.1 nicm 794: struct grid_cell gc;
1.18 nicm 795: u_int sx, sy, ty;
1.1 nicm 796:
797: if (!s->sel.flag)
798: return (0);
799:
800: /* Set colours. */
801: memcpy(&gc, &grid_default_cell, sizeof gc);
1.27 nicm 802: colour_set_fg(&gc, options_get_number(oo, "mode-fg"));
803: colour_set_bg(&gc, options_get_number(oo, "mode-bg"));
804: gc.attr |= options_get_number(oo, "mode-attr");
1.1 nicm 805:
1.18 nicm 806: /* Find top of screen. */
1.1 nicm 807: ty = screen_hsize(&wp->base) - data->oy;
808:
809: /* Adjust the selection. */
810: sx = data->selx;
811: sy = data->sely;
1.18 nicm 812: if (sy < ty) { /* above screen */
1.1 nicm 813: sx = 0;
814: sy = 0;
1.18 nicm 815: } else if (sy > ty + screen_size_y(s) - 1) { /* below screen */
1.1 nicm 816: sx = screen_size_x(s) - 1;
817: sy = screen_size_y(s) - 1;
1.18 nicm 818: } else
1.1 nicm 819: sy -= ty;
820: sy = screen_hsize(s) + sy;
821:
822: screen_set_selection(
823: s, sx, sy, data->cx, screen_hsize(s) + data->cy, &gc);
824: return (1);
825: }
826:
827: void
828: window_copy_copy_selection(struct window_pane *wp, struct client *c)
829: {
830: struct window_copy_mode_data *data = wp->modedata;
831: struct screen *s = &data->screen;
832: char *buf;
833: size_t off;
834: u_int i, xx, yy, sx, sy, ex, ey, limit;
835:
836: if (!s->sel.flag)
837: return;
838:
839: buf = xmalloc(1);
840: off = 0;
841:
842: *buf = '\0';
843:
844: /*
845: * The selection extends from selx,sely to (adjusted) cx,cy on
846: * the base screen.
847: */
848:
849: /* Find start and end. */
1.18 nicm 850: xx = data->cx;
1.1 nicm 851: yy = screen_hsize(&wp->base) + data->cy - data->oy;
1.2 nicm 852: if (yy < data->sely || (yy == data->sely && xx < data->selx)) {
1.1 nicm 853: sx = xx; sy = yy;
854: ex = data->selx; ey = data->sely;
855: } else {
856: sx = data->selx; sy = data->sely;
857: ex = xx; ey = yy;
858: }
859:
860: /* Trim ex to end of line. */
861: xx = window_copy_find_length(wp, ey);
862: if (ex > xx)
863: ex = xx;
864:
865: /* Copy the lines. */
866: if (sy == ey)
867: window_copy_copy_line(wp, &buf, &off, sy, sx, ex);
868: else {
1.16 nicm 869: xx = screen_size_x(s);
1.1 nicm 870: window_copy_copy_line(wp, &buf, &off, sy, sx, xx);
871: if (ey - sy > 1) {
1.16 nicm 872: for (i = sy + 1; i < ey; i++)
1.1 nicm 873: window_copy_copy_line(wp, &buf, &off, i, 0, xx);
874: }
875: window_copy_copy_line(wp, &buf, &off, ey, 0, ex);
876: }
877:
1.26 nicm 878: /* Don't bother if no data. */
879: if (off == 0) {
880: xfree(buf);
881: return;
882: }
883: off--; /* remove final \n */
1.1 nicm 884:
885: /* Add the buffer to the stack. */
886: limit = options_get_number(&c->session->options, "buffer-limit");
1.26 nicm 887: paste_add(&c->session->buffers, buf, off, limit);
1.1 nicm 888: }
889:
890: void
891: window_copy_copy_line(struct window_pane *wp,
892: char **buf, size_t *off, u_int sy, u_int sx, u_int ex)
893: {
1.16 nicm 894: struct grid *gd = wp->base.grid;
1.1 nicm 895: const struct grid_cell *gc;
896: const struct grid_utf8 *gu;
1.16 nicm 897: struct grid_line *gl;
898: u_int i, j, xx, wrapped = 0;
1.1 nicm 899:
900: if (sx > ex)
901: return;
902:
1.16 nicm 903: /*
904: * Work out if the line was wrapped at the screen edge and all of it is
905: * on screen.
906: */
907: gl = &gd->linedata[sy];
908: if (gl->flags & GRID_LINE_WRAPPED && gl->cellsize <= gd->sx)
909: wrapped = 1;
910:
911: /* If the line was wrapped, don't strip spaces (use the full length). */
912: if (wrapped)
913: xx = gl->cellsize;
914: else
915: xx = window_copy_find_length(wp, sy);
1.1 nicm 916: if (ex > xx)
917: ex = xx;
918: if (sx > xx)
919: sx = xx;
920:
921: if (sx < ex) {
922: for (i = sx; i < ex; i++) {
1.16 nicm 923: gc = grid_peek_cell(gd, i, sy);
1.1 nicm 924: if (gc->flags & GRID_FLAG_PADDING)
925: continue;
926: if (!(gc->flags & GRID_FLAG_UTF8)) {
927: *buf = xrealloc(*buf, 1, (*off) + 1);
928: (*buf)[(*off)++] = gc->data;
929: } else {
1.16 nicm 930: gu = grid_peek_utf8(gd, i, sy);
1.1 nicm 931: *buf = xrealloc(*buf, 1, (*off) + UTF8_SIZE);
932: for (j = 0; j < UTF8_SIZE; j++) {
933: if (gu->data[j] == 0xff)
934: break;
935: (*buf)[(*off)++] = gu->data[j];
936: }
937: }
938: }
939: }
940:
1.16 nicm 941: /* Only add a newline if the line wasn't wrapped. */
942: if (!wrapped) {
943: *buf = xrealloc(*buf, 1, (*off) + 1);
944: (*buf)[(*off)++] = '\n';
945: }
1.1 nicm 946: }
947:
948: int
949: window_copy_is_space(struct window_pane *wp, u_int px, u_int py)
950: {
951: const struct grid_cell *gc;
952: const char *spaces = " -_@";
953:
954: gc = grid_peek_cell(wp->base.grid, px, py);
955: if (gc->flags & (GRID_FLAG_PADDING|GRID_FLAG_UTF8))
956: return (0);
957: if (gc->data == 0x00 || gc->data == 0x7f)
958: return (0);
959: return (strchr(spaces, gc->data) != NULL);
960: }
961:
962: u_int
963: window_copy_find_length(struct window_pane *wp, u_int py)
964: {
965: const struct grid_cell *gc;
966: u_int px;
967:
1.4 nicm 968: /*
969: * If the pane has been resized, its grid can contain old overlong
970: * lines. grid_peek_cell does not allow accessing cells beyond the
971: * width of the grid, and screen_write_copy treats them as spaces, so
972: * ignore them here too.
973: */
1.15 nicm 974: px = wp->base.grid->linedata[py].cellsize;
1.4 nicm 975: if (px > screen_size_x(&wp->base))
976: px = screen_size_x(&wp->base);
1.1 nicm 977: while (px > 0) {
978: gc = grid_peek_cell(wp->base.grid, px - 1, py);
979: if (gc->flags & GRID_FLAG_UTF8)
980: break;
981: if (gc->data != ' ')
982: break;
983: px--;
984: }
985: return (px);
986: }
987:
988: void
1.5 nicm 989: window_copy_cursor_start_of_line(struct window_pane *wp)
990: {
991: struct window_copy_mode_data *data = wp->modedata;
992:
1.18 nicm 993: window_copy_update_cursor(wp, 0, data->cy);
1.5 nicm 994: if (window_copy_update_selection(wp))
995: window_copy_redraw_lines(wp, data->cy, 1);
1.6 nicm 996: }
997:
998: void
999: window_copy_cursor_back_to_indentation(struct window_pane *wp)
1000: {
1001: struct window_copy_mode_data *data = wp->modedata;
1002: u_int px, py, xx;
1003: const struct grid_cell *gc;
1004:
1005: px = 0;
1006: py = screen_hsize(&wp->base) + data->cy - data->oy;
1007: xx = window_copy_find_length(wp, py);
1008:
1009: /*
1010: * Don't use window_copy_is_space because that treats some word
1011: * delimiters as spaces.
1012: */
1013: while (px < xx) {
1014: gc = grid_peek_cell(wp->base.grid, px, py);
1015: if (gc->flags & GRID_FLAG_UTF8)
1016: break;
1017: if (gc->data != ' ')
1018: break;
1019: px++;
1020: }
1021:
1.18 nicm 1022: window_copy_update_cursor(wp, px, data->cy);
1023: if (window_copy_update_selection(wp))
1024: window_copy_redraw_lines(wp, data->cy, 1);
1.5 nicm 1025: }
1026:
1027: void
1028: window_copy_cursor_end_of_line(struct window_pane *wp)
1029: {
1030: struct window_copy_mode_data *data = wp->modedata;
1031: u_int px, py;
1032:
1033: py = screen_hsize(&wp->base) + data->cy - data->oy;
1034: px = window_copy_find_length(wp, py);
1035:
1.18 nicm 1036: window_copy_update_cursor(wp, px, data->cy);
1037: if (window_copy_update_selection(wp))
1038: window_copy_redraw_lines(wp, data->cy, 1);
1.5 nicm 1039: }
1040:
1041: void
1.1 nicm 1042: window_copy_cursor_left(struct window_pane *wp)
1043: {
1044: struct window_copy_mode_data *data = wp->modedata;
1045:
1046: if (data->cx == 0) {
1.28 nicm 1047: window_copy_cursor_up(wp, 0);
1.18 nicm 1048: window_copy_cursor_end_of_line(wp);
1.1 nicm 1049: } else {
1.18 nicm 1050: window_copy_update_cursor(wp, data->cx - 1, data->cy);
1.1 nicm 1051: if (window_copy_update_selection(wp))
1052: window_copy_redraw_lines(wp, data->cy, 1);
1053: }
1054: }
1055:
1056: void
1057: window_copy_cursor_right(struct window_pane *wp)
1058: {
1059: struct window_copy_mode_data *data = wp->modedata;
1060: u_int px, py;
1061:
1062: py = screen_hsize(&wp->base) + data->cy - data->oy;
1063: px = window_copy_find_length(wp, py);
1064:
1065: if (data->cx >= px) {
1066: window_copy_cursor_start_of_line(wp);
1.28 nicm 1067: window_copy_cursor_down(wp, 0);
1.1 nicm 1068: } else {
1.18 nicm 1069: window_copy_update_cursor(wp, data->cx + 1, data->cy);
1.1 nicm 1070: if (window_copy_update_selection(wp))
1071: window_copy_redraw_lines(wp, data->cy, 1);
1072: }
1073: }
1074:
1075: void
1.28 nicm 1076: window_copy_cursor_up(struct window_pane *wp, int scroll_only)
1.1 nicm 1077: {
1078: struct window_copy_mode_data *data = wp->modedata;
1079: u_int ox, oy, px, py;
1080:
1081: oy = screen_hsize(&wp->base) + data->cy - data->oy;
1082: ox = window_copy_find_length(wp, oy);
1.25 nicm 1083: if (ox != 0) {
1084: data->lastcx = data->cx;
1085: data->lastsx = ox;
1086: }
1.1 nicm 1087:
1.25 nicm 1088: data->cx = data->lastcx;
1.28 nicm 1089: if (scroll_only || data->cy == 0) {
1.1 nicm 1090: window_copy_scroll_down(wp, 1);
1.28 nicm 1091: if (scroll_only && window_copy_update_selection(wp))
1092: window_copy_redraw_lines(wp, data->cy, 2);
1093: } else {
1.18 nicm 1094: window_copy_update_cursor(wp, data->cx, data->cy - 1);
1.1 nicm 1095: if (window_copy_update_selection(wp))
1096: window_copy_redraw_lines(wp, data->cy, 2);
1097: }
1098:
1099: py = screen_hsize(&wp->base) + data->cy - data->oy;
1100: px = window_copy_find_length(wp, py);
1.25 nicm 1101: if (data->cx >= data->lastsx || data->cx > px)
1.1 nicm 1102: window_copy_cursor_end_of_line(wp);
1103: }
1104:
1105: void
1.28 nicm 1106: window_copy_cursor_down(struct window_pane *wp, int scroll_only)
1.1 nicm 1107: {
1108: struct window_copy_mode_data *data = wp->modedata;
1109: struct screen *s = &data->screen;
1110: u_int ox, oy, px, py;
1111:
1112: oy = screen_hsize(&wp->base) + data->cy - data->oy;
1113: ox = window_copy_find_length(wp, oy);
1.25 nicm 1114: if (ox != 0) {
1115: data->lastcx = data->cx;
1116: data->lastsx = ox;
1117: }
1.1 nicm 1118:
1.25 nicm 1119: data->cx = data->lastcx;
1.28 nicm 1120: if (scroll_only || data->cy == screen_size_y(s) - 1) {
1.1 nicm 1121: window_copy_scroll_up(wp, 1);
1.28 nicm 1122: if (scroll_only && window_copy_update_selection(wp))
1123: window_copy_redraw_lines(wp, data->cy - 1, 2);
1124: } else {
1.18 nicm 1125: window_copy_update_cursor(wp, data->cx, data->cy + 1);
1.1 nicm 1126: if (window_copy_update_selection(wp))
1127: window_copy_redraw_lines(wp, data->cy - 1, 2);
1128: }
1129:
1130: py = screen_hsize(&wp->base) + data->cy - data->oy;
1131: px = window_copy_find_length(wp, py);
1.25 nicm 1132: if (data->cx >= data->lastsx || data->cx > px)
1.1 nicm 1133: window_copy_cursor_end_of_line(wp);
1134: }
1135:
1136: void
1137: window_copy_cursor_next_word(struct window_pane *wp)
1138: {
1139: struct window_copy_mode_data *data = wp->modedata;
1140: struct screen *s = &data->screen;
1141: u_int px, py, xx, skip;
1142:
1.18 nicm 1143: px = data->cx;
1.1 nicm 1144: py = screen_hsize(&wp->base) + data->cy - data->oy;
1145: xx = window_copy_find_length(wp, py);
1146:
1147: skip = 1;
1148: if (px < xx) {
1149: /* If currently on a space, skip space. */
1150: if (window_copy_is_space(wp, px, py))
1151: skip = 0;
1152: } else
1153: skip = 0;
1154: for (;;) {
1155: if (px >= xx) {
1156: if (skip) {
1157: px = xx;
1158: break;
1159: }
1160:
1161: while (px >= xx) {
1162: if (data->cy == screen_size_y(s) - 1) {
1163: if (data->oy == 0)
1164: goto out;
1165: }
1166:
1167: px = 0;
1.28 nicm 1168: window_copy_cursor_down(wp, 0);
1.1 nicm 1169:
1170: py =screen_hsize(
1171: &wp->base) + data->cy - data->oy;
1172: xx = window_copy_find_length(wp, py);
1173: }
1174: }
1175:
1176: if (skip) {
1177: /* Currently skipping non-space (until space). */
1178: if (window_copy_is_space(wp, px, py))
1179: break;
1180: } else {
1181: /* Currently skipping space (until non-space). */
1182: if (!window_copy_is_space(wp, px, py))
1183: skip = 1;
1184: }
1185:
1186: px++;
1187: }
1.18 nicm 1188:
1.1 nicm 1189: out:
1.18 nicm 1190: window_copy_update_cursor(wp, px, data->cy);
1191: if (window_copy_update_selection(wp))
1192: window_copy_redraw_lines(wp, data->cy, 1);
1.1 nicm 1193: }
1194:
1.8 nicm 1195: /* Move to the previous place where a word begins. */
1.1 nicm 1196: void
1197: window_copy_cursor_previous_word(struct window_pane *wp)
1198: {
1199: struct window_copy_mode_data *data = wp->modedata;
1.8 nicm 1200: u_int px, py;
1.1 nicm 1201:
1.18 nicm 1202: px = data->cx;
1.1 nicm 1203: py = screen_hsize(&wp->base) + data->cy - data->oy;
1204:
1.8 nicm 1205: /* Move back to the previous word character. */
1.1 nicm 1206: for (;;) {
1.8 nicm 1207: if (px > 0) {
1208: px--;
1209: if (!window_copy_is_space(wp, px, py))
1.1 nicm 1210: break;
1.8 nicm 1211: } else {
1212: if (data->cy == 0 &&
1213: (screen_hsize(&wp->base) == 0 ||
1214: data->oy >= screen_hsize(&wp->base) - 1))
1215: goto out;
1.28 nicm 1216: window_copy_cursor_up(wp, 0);
1.1 nicm 1217:
1.8 nicm 1218: py = screen_hsize(
1219: &wp->base) + data->cy - data->oy;
1220: px = window_copy_find_length(wp, py);
1.1 nicm 1221: }
1.8 nicm 1222: }
1.1 nicm 1223:
1.8 nicm 1224: /* Move back to the beginning of this word. */
1225: while (px > 0 && !window_copy_is_space(wp, px - 1, py))
1.1 nicm 1226: px--;
1.8 nicm 1227:
1.1 nicm 1228: out:
1.18 nicm 1229: window_copy_update_cursor(wp, px, data->cy);
1230: if (window_copy_update_selection(wp))
1231: window_copy_redraw_lines(wp, data->cy, 1);
1.1 nicm 1232: }
1233:
1234: void
1235: window_copy_scroll_up(struct window_pane *wp, u_int ny)
1236: {
1237: struct window_copy_mode_data *data = wp->modedata;
1238: struct screen *s = &data->screen;
1239: struct screen_write_ctx ctx;
1240:
1241: if (data->oy < ny)
1242: ny = data->oy;
1243: if (ny == 0)
1244: return;
1245: data->oy -= ny;
1246: window_copy_update_selection(wp);
1247:
1248: screen_write_start(&ctx, wp, NULL);
1249: screen_write_cursormove(&ctx, 0, 0);
1250: screen_write_deleteline(&ctx, ny);
1251: window_copy_write_lines(wp, &ctx, screen_size_y(s) - ny, ny);
1252: window_copy_write_line(wp, &ctx, 0);
1253: window_copy_write_line(wp, &ctx, 1);
1254: if (s->sel.flag && screen_size_y(s) > ny)
1255: window_copy_write_line(wp, &ctx, screen_size_y(s) - ny - 1);
1256: screen_write_cursormove(&ctx, data->cx, data->cy);
1257: screen_write_stop(&ctx);
1258: }
1259:
1260: void
1261: window_copy_scroll_down(struct window_pane *wp, u_int ny)
1262: {
1263: struct window_copy_mode_data *data = wp->modedata;
1264: struct screen *s = &data->screen;
1265: struct screen_write_ctx ctx;
1266:
1267: if (ny > screen_hsize(&wp->base))
1268: return;
1269:
1270: if (data->oy > screen_hsize(&wp->base) - ny)
1271: ny = screen_hsize(&wp->base) - data->oy;
1272: if (ny == 0)
1273: return;
1274: data->oy += ny;
1275: window_copy_update_selection(wp);
1276:
1277: screen_write_start(&ctx, wp, NULL);
1278: screen_write_cursormove(&ctx, 0, 0);
1279: screen_write_insertline(&ctx, ny);
1280: window_copy_write_lines(wp, &ctx, 0, ny);
1281: if (s->sel.flag && screen_size_y(s) > ny)
1282: window_copy_write_line(wp, &ctx, ny);
1283: else if (ny == 1) /* nuke position */
1284: window_copy_write_line(wp, &ctx, 1);
1285: screen_write_cursormove(&ctx, data->cx, data->cy);
1286: screen_write_stop(&ctx);
1287: }