1 /* $OpenBSD: grid-view.c,v 1.24 2016/01/19 15:59:12 nicm Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com> 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 21 #include <string.h> 22 23 #include "tmux.h" 24 25 /* 26 * Grid view functions. These work using coordinates relative to the visible 27 * screen area. 28 */ 29 30 #define grid_view_x(gd, x) (x) 31 #define grid_view_y(gd, y) ((gd)->hsize + (y)) 32 33 /* Get cell. */ 34 void 35 grid_view_get_cell(struct grid *gd, u_int px, u_int py, struct grid_cell *gc) 36 { 37 grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc); 38 } 39 40 /* Set cell. */ 41 void 42 grid_view_set_cell(struct grid *gd, u_int px, u_int py, 43 const struct grid_cell *gc) 44 { 45 grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc); 46 } 47 48 /* Clear into history. */ 49 void 50 grid_view_clear_history(struct grid *gd) 51 { 52 struct grid_line *gl; 53 u_int yy, last; 54 55 /* Find the last used line. */ 56 last = 0; 57 for (yy = 0; yy < gd->sy; yy++) { 58 gl = &gd->linedata[grid_view_y(gd, yy)]; 59 if (gl->cellsize != 0) 60 last = yy + 1; 61 } 62 if (last == 0) 63 return; 64 65 /* Scroll the lines into the history. */ 66 for (yy = 0; yy < last; yy++) { 67 grid_collect_history(gd); 68 grid_scroll_history(gd); 69 } 70 } 71 72 /* Clear area. */ 73 void 74 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny) 75 { 76 px = grid_view_x(gd, px); 77 py = grid_view_y(gd, py); 78 79 grid_clear(gd, px, py, nx, ny); 80 } 81 82 /* Scroll region up. */ 83 void 84 grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower) 85 { 86 if (gd->flags & GRID_HISTORY) { 87 grid_collect_history(gd); 88 if (rupper == 0 && rlower == gd->sy - 1) 89 grid_scroll_history(gd); 90 else { 91 rupper = grid_view_y(gd, rupper); 92 rlower = grid_view_y(gd, rlower); 93 grid_scroll_history_region(gd, rupper, rlower); 94 } 95 } else { 96 rupper = grid_view_y(gd, rupper); 97 rlower = grid_view_y(gd, rlower); 98 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper); 99 } 100 } 101 102 /* Scroll region down. */ 103 void 104 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower) 105 { 106 rupper = grid_view_y(gd, rupper); 107 rlower = grid_view_y(gd, rlower); 108 109 grid_move_lines(gd, rupper + 1, rupper, rlower - rupper); 110 } 111 112 /* Insert lines. */ 113 void 114 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny) 115 { 116 u_int sy; 117 118 py = grid_view_y(gd, py); 119 120 sy = grid_view_y(gd, gd->sy); 121 122 grid_move_lines(gd, py + ny, py, sy - py - ny); 123 } 124 125 /* Insert lines in region. */ 126 void 127 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, 128 u_int ny) 129 { 130 u_int ny2; 131 132 rlower = grid_view_y(gd, rlower); 133 134 py = grid_view_y(gd, py); 135 136 ny2 = rlower + 1 - py - ny; 137 grid_move_lines(gd, rlower + 1 - ny2, py, ny2); 138 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 139 } 140 141 /* Delete lines. */ 142 void 143 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny) 144 { 145 u_int sy; 146 147 py = grid_view_y(gd, py); 148 149 sy = grid_view_y(gd, gd->sy); 150 151 grid_move_lines(gd, py, py + ny, sy - py - ny); 152 grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny)); 153 } 154 155 /* Delete lines inside scroll region. */ 156 void 157 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, 158 u_int ny) 159 { 160 u_int ny2; 161 162 rlower = grid_view_y(gd, rlower); 163 164 py = grid_view_y(gd, py); 165 166 ny2 = rlower + 1 - py - ny; 167 grid_move_lines(gd, py, py + ny, ny2); 168 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 169 } 170 171 /* Insert characters. */ 172 void 173 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx) 174 { 175 u_int sx; 176 177 px = grid_view_x(gd, px); 178 py = grid_view_y(gd, py); 179 180 sx = grid_view_x(gd, gd->sx); 181 182 if (px == sx - 1) 183 grid_clear(gd, px, py, 1, 1); 184 else 185 grid_move_cells(gd, px + nx, px, py, sx - px - nx); 186 } 187 188 /* Delete characters. */ 189 void 190 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx) 191 { 192 u_int sx; 193 194 px = grid_view_x(gd, px); 195 py = grid_view_y(gd, py); 196 197 sx = grid_view_x(gd, gd->sx); 198 199 grid_move_cells(gd, px, px + nx, py, sx - px - nx); 200 grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1); 201 } 202 203 /* Convert cells into a string. */ 204 char * 205 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx) 206 { 207 px = grid_view_x(gd, px); 208 py = grid_view_y(gd, py); 209 210 return (grid_string_cells(gd, px, py, nx, NULL, 0, 0, 0)); 211 } 212