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/* $OpenBSD: grid-view.c,v 1.30 2017/08/30 18:13:47 nicm Exp $ */ |
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/* |
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* Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER |
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <string.h> |
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#include "tmux.h" |
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/* |
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* Grid view functions. These work using coordinates relative to the visible |
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* screen area. |
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*/ |
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#define grid_view_x(gd, x) (x) |
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#define grid_view_y(gd, y) ((gd)->hsize + (y)) |
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/* Get cell. */ |
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void |
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grid_view_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc) |
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{ |
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grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc); |
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} |
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/* Set cell. */ |
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void |
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grid_view_set_cell(struct grid *gd, u_int px, u_int py, |
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const struct grid_cell *gc) |
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{ |
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grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc); |
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} |
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/* Set cells. */ |
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void |
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grid_view_set_cells(struct grid *gd, u_int px, u_int py, |
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const struct grid_cell *gc, const char *s, size_t slen) |
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{ |
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grid_set_cells(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc, s, |
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slen); |
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} |
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/* Clear into history. */ |
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void |
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grid_view_clear_history(struct grid *gd, u_int bg) |
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{ |
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struct grid_line *gl; |
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u_int yy, last; |
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/* Find the last used line. */ |
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last = 0; |
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for (yy = 0; yy < gd->sy; yy++) { |
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gl = &gd->linedata[grid_view_y(gd, yy)]; |
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if (gl->cellused != 0) |
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last = yy + 1; |
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} |
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if (last == 0) { |
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grid_view_clear(gd, 0, 0, gd->sx, gd->sy, bg); |
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return; |
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} |
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/* Scroll the lines into the history. */ |
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for (yy = 0; yy < last; yy++) { |
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grid_collect_history(gd); |
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grid_scroll_history(gd, bg); |
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} |
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if (last < gd->sy) |
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grid_view_clear(gd, 0, 0, gd->sx, gd->sy - last, bg); |
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gd->hscrolled = 0; |
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} |
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/* Clear area. */ |
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void |
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grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny, |
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u_int bg) |
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{ |
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px = grid_view_x(gd, px); |
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py = grid_view_y(gd, py); |
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grid_clear(gd, px, py, nx, ny, bg); |
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} |
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/* Scroll region up. */ |
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void |
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grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower, |
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u_int bg) |
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{ |
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if (gd->flags & GRID_HISTORY) { |
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grid_collect_history(gd); |
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if (rupper == 0 && rlower == gd->sy - 1) |
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grid_scroll_history(gd, bg); |
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else { |
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rupper = grid_view_y(gd, rupper); |
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rlower = grid_view_y(gd, rlower); |
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grid_scroll_history_region(gd, rupper, rlower, bg); |
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} |
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} else { |
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rupper = grid_view_y(gd, rupper); |
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rlower = grid_view_y(gd, rlower); |
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grid_move_lines(gd, rupper, rupper + 1, rlower - rupper, bg); |
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} |
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} |
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/* Scroll region down. */ |
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void |
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grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower, |
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u_int bg) |
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{ |
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rupper = grid_view_y(gd, rupper); |
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rlower = grid_view_y(gd, rlower); |
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grid_move_lines(gd, rupper + 1, rupper, rlower - rupper, bg); |
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} |
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/* Insert lines. */ |
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void |
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grid_view_insert_lines(struct grid *gd, u_int py, u_int ny, u_int bg) |
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{ |
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u_int sy; |
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py = grid_view_y(gd, py); |
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sy = grid_view_y(gd, gd->sy); |
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grid_move_lines(gd, py + ny, py, sy - py - ny, bg); |
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} |
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/* Insert lines in region. */ |
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void |
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grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, |
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u_int ny, u_int bg) |
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{ |
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u_int ny2; |
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rlower = grid_view_y(gd, rlower); |
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py = grid_view_y(gd, py); |
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ny2 = rlower + 1 - py - ny; |
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grid_move_lines(gd, rlower + 1 - ny2, py, ny2, bg); |
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grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg); |
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} |
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/* Delete lines. */ |
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void |
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grid_view_delete_lines(struct grid *gd, u_int py, u_int ny, u_int bg) |
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{ |
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u_int sy; |
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py = grid_view_y(gd, py); |
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sy = grid_view_y(gd, gd->sy); |
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grid_move_lines(gd, py, py + ny, sy - py - ny, bg); |
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grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny), bg); |
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} |
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/* Delete lines inside scroll region. */ |
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void |
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grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, |
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u_int ny, u_int bg) |
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{ |
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u_int ny2; |
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rlower = grid_view_y(gd, rlower); |
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py = grid_view_y(gd, py); |
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ny2 = rlower + 1 - py - ny; |
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grid_move_lines(gd, py, py + ny, ny2, bg); |
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grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2, bg); |
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} |
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/* Insert characters. */ |
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void |
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grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg) |
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{ |
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u_int sx; |
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px = grid_view_x(gd, px); |
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py = grid_view_y(gd, py); |
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sx = grid_view_x(gd, gd->sx); |
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if (px >= sx - 1) |
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grid_clear(gd, px, py, 1, 1, bg); |
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else |
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grid_move_cells(gd, px + nx, px, py, sx - px - nx, bg); |
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} |
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/* Delete characters. */ |
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void |
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grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx, u_int bg) |
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{ |
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u_int sx; |
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px = grid_view_x(gd, px); |
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py = grid_view_y(gd, py); |
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sx = grid_view_x(gd, gd->sx); |
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grid_move_cells(gd, px, px + nx, py, sx - px - nx, bg); |
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grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1, bg); |
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} |
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/* Convert cells into a string. */ |
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char * |
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grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx) |
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{ |
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px = grid_view_x(gd, px); |
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py = grid_view_y(gd, py); |
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return (grid_string_cells(gd, px, py, nx, NULL, 0, 0, 0)); |
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} |