1 /* $OpenBSD: grid-view.c,v 1.6 2009/07/13 10:43:52 nicm 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 area. */ 78 void 79 grid_view_clear(struct grid *gd, u_int px, u_int py, u_int nx, u_int ny) 80 { 81 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u, ny=%u", px, py, nx, 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 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 94 95 if (gd->flags & GRID_HISTORY && rupper == 0 && rlower == gd->sy - 1) { 96 grid_scroll_line(gd); 97 return; 98 } 99 100 rupper = grid_view_y(gd, rupper); 101 rlower = grid_view_y(gd, rlower); 102 103 grid_move_lines(gd, rupper, rupper + 1, rlower - rupper); 104 } 105 106 /* Scroll region down. */ 107 void 108 grid_view_scroll_region_down(struct grid *gd, u_int rupper, u_int rlower) 109 { 110 GRID_DEBUG(gd, "rupper=%u, rlower=%u", rupper, rlower); 111 112 rupper = grid_view_y(gd, rupper); 113 rlower = grid_view_y(gd, rlower); 114 115 grid_move_lines(gd, rupper + 1, rupper, rlower - rupper); 116 } 117 118 /* Insert lines. */ 119 void 120 grid_view_insert_lines(struct grid *gd, u_int py, u_int ny) 121 { 122 u_int sy; 123 124 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 125 126 py = grid_view_y(gd, py); 127 128 sy = grid_view_y(gd, gd->sy); 129 130 grid_move_lines(gd, py + ny, py, sy - py - ny); 131 } 132 133 /* Insert lines in region. */ 134 void 135 grid_view_insert_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 136 { 137 u_int ny2; 138 139 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 140 141 rlower = grid_view_y(gd, rlower); 142 143 py = grid_view_y(gd, py); 144 145 ny2 = rlower + 1 - py - ny; 146 grid_move_lines(gd, rlower + 1 - ny2, py, ny2); 147 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 148 } 149 150 /* Delete lines. */ 151 void 152 grid_view_delete_lines(struct grid *gd, u_int py, u_int ny) 153 { 154 u_int sy; 155 156 GRID_DEBUG(gd, "py=%u, ny=%u", py, ny); 157 158 py = grid_view_y(gd, py); 159 160 sy = grid_view_y(gd, gd->sy); 161 162 grid_move_lines(gd, py, py + ny, sy - py - ny); 163 grid_clear(gd, 0, sy - ny, gd->sx, py + ny - (sy - ny)); 164 } 165 166 /* Delete lines inside scroll region. */ 167 void 168 grid_view_delete_lines_region(struct grid *gd, u_int rlower, u_int py, u_int ny) 169 { 170 u_int ny2; 171 172 GRID_DEBUG(gd, "rlower=%u, py=%u, ny=%u", rlower, py, ny); 173 174 rlower = grid_view_y(gd, rlower); 175 176 py = grid_view_y(gd, py); 177 178 ny2 = rlower + 1 - py - ny; 179 grid_move_lines(gd, py, py + ny, ny2); 180 grid_clear(gd, 0, py + ny2, gd->sx, ny - ny2); 181 } 182 183 /* Insert characters. */ 184 void 185 grid_view_insert_cells(struct grid *gd, u_int px, u_int py, u_int nx) 186 { 187 u_int sx; 188 189 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 190 191 px = grid_view_x(gd, px); 192 py = grid_view_y(gd, py); 193 194 sx = grid_view_x(gd, gd->sx); 195 196 if (px == sx - 1) 197 grid_clear(gd, px, py, 1, 1); 198 else 199 grid_move_cells(gd, px + nx, px, py, sx - px - nx); 200 } 201 202 /* Delete characters. */ 203 void 204 grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx) 205 { 206 u_int sx; 207 208 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 209 210 px = grid_view_x(gd, px); 211 py = grid_view_y(gd, py); 212 213 sx = grid_view_x(gd, gd->sx); 214 215 grid_move_cells(gd, px, px + nx, py, sx - px - nx); 216 grid_clear(gd, sx - nx, py, px + nx - (sx - nx), 1); 217 } 218 219 /* Convert cells into a string. */ 220 char * 221 grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx) 222 { 223 GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx); 224 225 px = grid_view_x(gd, px); 226 py = grid_view_y(gd, py); 227 228 return (grid_string_cells(gd, px, py, nx)); 229 } 230