1 /* $OpenBSD$ */ 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 /* Find the last used line. */ 63 last = 0; 64 for (yy = 0; yy < gd->sy; yy++) { 65 gl = &gd->linedata[grid_view_y(gd, yy)]; 66 if (gl->cellsize != 0) 67 last = yy + 1; 68 } 69 if (last == 0) 70 return; 71 72 /* Scroll the lines into the history. */ 73 for (yy = 0; yy < last; yy++) { 74 grid_collect_history(gd); 75 grid_scroll_history(gd); 76 } 77 } 78 79 /* Clear area. */ 80 void 81 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny) 82 { 83 px = grid_view_x(gd, px); 84 py = grid_view_y(gd, py); 85 86 grid_clear(gd, px, py, nx, ny); 87 } 88 89 /* Scroll region up. */ 90 void 91 grid_view_scroll_region_up(struct grid *gd, u_int rupper, u_int rlower) 92 { 93 if (gd->flags & GRID_HISTORY) { 94 grid_collect_history(gd); 95 if (rupper == 0 && rlower == gd->sy - 1) 96 grid_scroll_history(gd); 97 else { 98 rupper = grid_view_y(gd, rupper); 99 rlower = grid_view_y(gd, rlower); 100 grid_scroll_history_region(gd, rupper, rlower); 101 } 102 } else { 103 rupper = grid_view_y(gd, rupper); 104 rlower = grid_view_y(gd, rlower); 105 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper); 106 } 107 } 108 109 /* Scroll region down. */ 110 void 111 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower) 112 { 113 rupper = grid_view_y(gd, rupper); 114 rlower = grid_view_y(gd, rlower); 115 116 grid_move_lines(gd, rupper + 1, rupper, rlower - rupper); 117 } 118 119 /* Insert lines. */ 120 void 121 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny) 122 { 123 u_int sy; 124 125 py = grid_view_y(gd, py); 126 127 sy = grid_view_y(gd, gd->sy); 128 129 grid_move_lines(gd, py + ny, py, sy - py - ny); 130 } 131 132 /* Insert lines in region. */ 133 void 134 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, 135 u_int ny) 136 { 137 u_int ny2; 138 139 rlower = grid_view_y(gd, rlower); 140 141 py = grid_view_y(gd, py); 142 143 ny2 = rlower + 1 - py - ny; 144 grid_move_lines(gd, rlower + 1 - ny2, py, ny2); 145 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 146 } 147 148 /* Delete lines. */ 149 void 150 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny) 151 { 152 u_int sy; 153 154 py = grid_view_y(gd, py); 155 156 sy = grid_view_y(gd, gd->sy); 157 158 grid_move_lines(gd, py, py + ny, sy - py - ny); 159 grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny)); 160 } 161 162 /* Delete lines inside scroll region. */ 163 void 164 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, 165 u_int ny) 166 { 167 u_int ny2; 168 169 rlower = grid_view_y(gd, rlower); 170 171 py = grid_view_y(gd, py); 172 173 ny2 = rlower + 1 - py - ny; 174 grid_move_lines(gd, py, py + ny, ny2); 175 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 176 } 177 178 /* Insert characters. */ 179 void 180 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx) 181 { 182 u_int sx; 183 184 px = grid_view_x(gd, px); 185 py = grid_view_y(gd, py); 186 187 sx = grid_view_x(gd, gd->sx); 188 189 if (px == sx - 1) 190 grid_clear(gd, px, py, 1, 1); 191 else 192 grid_move_cells(gd, px + nx, px, py, sx - px - nx); 193 } 194 195 /* Delete characters. */ 196 void 197 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx) 198 { 199 u_int sx; 200 201 px = grid_view_x(gd, px); 202 py = grid_view_y(gd, py); 203 204 sx = grid_view_x(gd, gd->sx); 205 206 grid_move_cells(gd, px, px + nx, py, sx - px - nx); 207 grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1); 208 } 209 210 /* Convert cells into a string. */ 211 char * 212 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx) 213 { 214 px = grid_view_x(gd, px); 215 py = grid_view_y(gd, py); 216 217 return (grid_string_cells(gd, px, py, nx, NULL, 0, 0, 0)); 218 } 219