1 /* $Id: grid-view.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv Exp $ */ 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 /* Get UTF-8 for reading. */ 56 const struct grid_utf8 * 57 grid_view_peek_utf8(struct grid *gd, u_int px, u_int py) 58 { 59 return (grid_peek_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 60 } 61 62 /* Get UTF-8 for writing. */ 63 struct grid_utf8 * 64 grid_view_get_utf8(struct grid *gd, u_int px, u_int py) 65 { 66 return (grid_get_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py))); 67 } 68 69 /* Set UTF-8. */ 70 void 71 grid_view_set_utf8( 72 struct grid *gd, u_int px, u_int py, const struct grid_utf8 *gu) 73 { 74 grid_set_utf8(gd, grid_view_x(gd, px), grid_view_y(gd, py), gu); 75 } 76 77 /* Clear into history. */ 78 void 79 grid_view_clear_history(struct grid *gd) 80 { 81 struct grid_line *gl; 82 u_int yy, last; 83 84 GRID_DEBUG(gd, ""); 85 86 /* Find the last used line. */ 87 last = 0; 88 for (yy = 0; yy < gd->sy; yy++) { 89 gl = &gd->linedata[grid_view_y(gd, yy)]; 90 if (gl->cellsize != 0 || gl->utf8size != 0) 91 last = yy + 1; 92 } 93 if (last == 0) 94 return; 95 96 /* Scroll the lines into the history. */ 97 for (yy = 0; yy < last; yy++) 98 grid_scroll_history(gd); 99 } 100 101 /* Clear area. */ 102 void 103 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny) 104 { 105 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, ny); 106 107 px = grid_view_x(gd, px); 108 py = grid_view_y(gd, py); 109 110 grid_clear(gd, px, py, nx, ny); 111 } 112 113 /* Scroll region up. */ 114 void 115 grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower) 116 { 117 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 118 119 if (gd->flags & GRID_HISTORY) { 120 grid_collect_history(gd); 121 if (rupper == 0 && rlower == gd->sy - 1) 122 grid_scroll_history(gd); 123 else { 124 rupper = grid_view_y(gd, rupper); 125 rlower = grid_view_y(gd, rlower); 126 grid_scroll_history_region(gd, rupper, rlower); 127 } 128 } else { 129 rupper = grid_view_y(gd, rupper); 130 rlower = grid_view_y(gd, rlower); 131 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper); 132 } 133 } 134 135 /* Scroll region down. */ 136 void 137 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower) 138 { 139 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 140 141 rupper = grid_view_y(gd, rupper); 142 rlower = grid_view_y(gd, rlower); 143 144 grid_move_lines(gd, rupper + 1, rupper, rlower - rupper); 145 } 146 147 /* Insert lines. */ 148 void 149 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny) 150 { 151 u_int sy; 152 153 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 154 155 py = grid_view_y(gd, py); 156 157 sy = grid_view_y(gd, gd->sy); 158 159 grid_move_lines(gd, py + ny, py, sy - py - ny); 160 } 161 162 /* Insert lines in region. */ 163 void 164 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 165 { 166 u_int ny2; 167 168 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 169 170 rlower = grid_view_y(gd, rlower); 171 172 py = grid_view_y(gd, py); 173 174 ny2 = rlower + 1 - py - ny; 175 grid_move_lines(gd, rlower + 1 - ny2, py, ny2); 176 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 177 } 178 179 /* Delete lines. */ 180 void 181 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny) 182 { 183 u_int sy; 184 185 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 186 187 py = grid_view_y(gd, py); 188 189 sy = grid_view_y(gd, gd->sy); 190 191 grid_move_lines(gd, py, py + ny, sy - py - ny); 192 grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny)); 193 } 194 195 /* Delete lines inside scroll region. */ 196 void 197 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 198 { 199 u_int ny2; 200 201 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 202 203 rlower = grid_view_y(gd, rlower); 204 205 py = grid_view_y(gd, py); 206 207 ny2 = rlower + 1 - py - ny; 208 grid_move_lines(gd, py, py + ny, ny2); 209 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 210 } 211 212 /* Insert characters. */ 213 void 214 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx) 215 { 216 u_int sx; 217 218 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 219 220 px = grid_view_x(gd, px); 221 py = grid_view_y(gd, py); 222 223 sx = grid_view_x(gd, gd->sx); 224 225 if (px == sx - 1) 226 grid_clear(gd, px, py, 1, 1); 227 else 228 grid_move_cells(gd, px + nx, px, py, sx - px - nx); 229 } 230 231 /* Delete characters. */ 232 void 233 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx) 234 { 235 u_int sx; 236 237 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 238 239 px = grid_view_x(gd, px); 240 py = grid_view_y(gd, py); 241 242 sx = grid_view_x(gd, gd->sx); 243 244 grid_move_cells(gd, px, px + nx, py, sx - px - nx); 245 grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1); 246 } 247 248 /* Convert cells into a string. */ 249 char * 250 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx) 251 { 252 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 253 254 px = grid_view_x(gd, px); 255 py = grid_view_y(gd, py); 256 257 return (grid_string_cells(gd, px, py, nx)); 258 } 259