1 /* Id */ 2 3 /* 4 * Copyright (c) 2008 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 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 for reading. */ 34 const struct grid_cell * 35 grid_view_peek_cell(struct grid *gd, u_int px, u_int py) 36 { 37 return (grid_peek_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 38 } 39 40 /* Get cell for writing. */ 41 struct grid_cell * 42 grid_view_get_cell(struct grid *gd, u_int px, u_int py) 43 { 44 return (grid_get_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 45 } 46 47 /* Set cell. */ 48 void 49 grid_view_set_cell( 50 struct grid *gd, u_int px, u_int py, const struct grid_cell *gc) 51 { 52 grid_set_cell(gd, grid_view_x(gd, px), grid_view_y(gd, py), gc); 53 } 54 55 /* Clear into history. */ 56 void 57 grid_view_clear_history(struct grid *gd) 58 { 59 struct grid_line *gl; 60 u_int yy, last; 61 62 GRID_DEBUG(gd, ""); 63 64 /* Find the last used line. */ 65 last = 0; 66 for (yy = 0; yy < gd->sy; yy++) { 67 gl = &gd->linedata[grid_view_y(gd, yy)]; 68 if (gl->cellsize != 0) 69 last = yy + 1; 70 } 71 if (last == 0) 72 return; 73 74 /* Scroll the lines into the history. */ 75 for (yy = 0; yy < last; yy++) { 76 grid_collect_history(gd); 77 grid_scroll_history(gd); 78 } 79 } 80 81 /* Clear area. */ 82 void 83 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny) 84 { 85 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, ny); 86 87 px = grid_view_x(gd, px); 88 py = grid_view_y(gd, py); 89 90 grid_clear(gd, px, py, nx, ny); 91 } 92 93 /* Scroll region up. */ 94 void 95 grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower) 96 { 97 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 98 99 if (gd->flags & GRID_HISTORY) { 100 grid_collect_history(gd); 101 if (rupper == 0 && rlower == gd->sy - 1) 102 grid_scroll_history(gd); 103 else { 104 rupper = grid_view_y(gd, rupper); 105 rlower = grid_view_y(gd, rlower); 106 grid_scroll_history_region(gd, rupper, rlower); 107 } 108 } else { 109 rupper = grid_view_y(gd, rupper); 110 rlower = grid_view_y(gd, rlower); 111 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper); 112 } 113 } 114 115 /* Scroll region down. */ 116 void 117 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower) 118 { 119 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 120 121 rupper = grid_view_y(gd, rupper); 122 rlower = grid_view_y(gd, rlower); 123 124 grid_move_lines(gd, rupper + 1, rupper, rlower - rupper); 125 } 126 127 /* Insert lines. */ 128 void 129 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny) 130 { 131 u_int sy; 132 133 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 134 135 py = grid_view_y(gd, py); 136 137 sy = grid_view_y(gd, gd->sy); 138 139 grid_move_lines(gd, py + ny, py, sy - py - ny); 140 } 141 142 /* Insert lines in region. */ 143 void 144 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 145 { 146 u_int ny2; 147 148 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 149 150 rlower = grid_view_y(gd, rlower); 151 152 py = grid_view_y(gd, py); 153 154 ny2 = rlower + 1 - py - ny; 155 grid_move_lines(gd, rlower + 1 - ny2, py, ny2); 156 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 157 } 158 159 /* Delete lines. */ 160 void 161 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny) 162 { 163 u_int sy; 164 165 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 166 167 py = grid_view_y(gd, py); 168 169 sy = grid_view_y(gd, gd->sy); 170 171 grid_move_lines(gd, py, py + ny, sy - py - ny); 172 grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny)); 173 } 174 175 /* Delete lines inside scroll region. */ 176 void 177 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 178 { 179 u_int ny2; 180 181 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 182 183 rlower = grid_view_y(gd, rlower); 184 185 py = grid_view_y(gd, py); 186 187 ny2 = rlower + 1 - py - ny; 188 grid_move_lines(gd, py, py + ny, ny2); 189 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 190 } 191 192 /* Insert characters. */ 193 void 194 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx) 195 { 196 u_int sx; 197 198 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 199 200 px = grid_view_x(gd, px); 201 py = grid_view_y(gd, py); 202 203 sx = grid_view_x(gd, gd->sx); 204 205 if (px == sx - 1) 206 grid_clear(gd, px, py, 1, 1); 207 else 208 grid_move_cells(gd, px + nx, px, py, sx - px - nx); 209 } 210 211 /* Delete characters. */ 212 void 213 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx) 214 { 215 u_int sx; 216 217 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 218 219 px = grid_view_x(gd, px); 220 py = grid_view_y(gd, py); 221 222 sx = grid_view_x(gd, gd->sx); 223 224 grid_move_cells(gd, px, px + nx, py, sx - px - nx); 225 grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1); 226 } 227 228 /* Convert cells into a string. */ 229 char * 230 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx) 231 { 232 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 233 234 px = grid_view_x(gd, px); 235 py = grid_view_y(gd, py); 236 237 return (grid_string_cells(gd, px, py, nx, NULL, 0, 0, 0)); 238 } 239