1 /* 2 * $Id: arrows.c,v 1.49 2012/12/30 22:33:28 tom Exp $ 3 * 4 * arrows.c -- draw arrows to indicate end-of-range for lists 5 * 6 * Copyright 2000-2011,2012 Thomas E. Dickey 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU Lesser General Public License, version 2.1 10 * as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this program; if not, write to 19 * Free Software Foundation, Inc. 20 * 51 Franklin St., Fifth Floor 21 * Boston, MA 02110, USA. 22 */ 23 24 #include <dialog.h> 25 26 #ifdef USE_WIDE_CURSES 27 #if defined(CURSES_WACS_ARRAY) && !defined(CURSES_WACS_SYMBOLS) 28 /* workaround for NetBSD 5.1 curses */ 29 #undef WACS_DARROW 30 #undef WACS_UARROW 31 #define WACS_DARROW &(CURSES_WACS_ARRAY['.']) 32 #define WACS_UARROW &(CURSES_WACS_ARRAY['-']) 33 #endif 34 #define add_acs(win, code) wadd_wch(win, W ## code) 35 #else 36 #define add_acs(win, code) waddch(win, dlg_boxchar(code)) 37 #endif 38 39 /* size of decorations */ 40 #define ON_LEFT 4 41 #define ON_RIGHT 3 42 43 #ifdef HAVE_COLOR 44 static chtype 45 merge_colors(chtype foreground, chtype background) 46 { 47 chtype result = foreground; 48 if ((foreground & A_COLOR) != (background & A_COLOR)) { 49 short fg_f, bg_f; 50 short fg_b, bg_b; 51 short fg_pair = (short) PAIR_NUMBER(foreground); 52 short bg_pair = (short) PAIR_NUMBER(background); 53 54 if (pair_content(fg_pair, &fg_f, &bg_f) != ERR 55 && pair_content(bg_pair, &fg_b, &bg_b) != ERR) { 56 result &= ~A_COLOR; 57 result |= dlg_color_pair(fg_f, bg_b); 58 } 59 } 60 return result; 61 } 62 #else 63 #define merge_colors(f,b) (f) 64 #endif 65 66 /* 67 * If we have help-line text, e.g., from "--hline", draw it between the other 68 * decorations at the bottom of the dialog window. 69 */ 70 void 71 dlg_draw_helpline(WINDOW *win, bool decorations) 72 { 73 int cur_x, cur_y; 74 int bottom; 75 76 if (dialog_vars.help_line != 0 77 && (bottom = getmaxy(win) - 1) > 0) { 78 chtype attr = A_NORMAL; 79 const int *cols = dlg_index_columns(dialog_vars.help_line); 80 int other = decorations ? (ON_LEFT + ON_RIGHT) : 0; 81 int avail = (getmaxx(win) - other - 2); 82 int limit = dlg_count_real_columns(dialog_vars.help_line) + 2; 83 84 if (limit < avail) { 85 getyx(win, cur_y, cur_x); 86 other = decorations ? ON_LEFT : 0; 87 (void) wmove(win, bottom, other + (avail - limit) / 2); 88 waddch(win, '['); 89 dlg_print_text(win, dialog_vars.help_line, cols[limit], &attr); 90 waddch(win, ']'); 91 wmove(win, cur_y, cur_x); 92 } 93 } 94 } 95 96 void 97 dlg_draw_arrows2(WINDOW *win, 98 int top_arrow, 99 int bottom_arrow, 100 int x, 101 int top, 102 int bottom, 103 chtype attr, 104 chtype borderattr) 105 { 106 chtype save = dlg_get_attrs(win); 107 int cur_x, cur_y; 108 int limit_x = getmaxx(win); 109 bool draw_top = TRUE; 110 bool is_toplevel = (wgetparent(win) == stdscr); 111 112 getyx(win, cur_y, cur_x); 113 114 /* 115 * If we're drawing a centered title, do not overwrite with the arrows. 116 */ 117 if (dialog_vars.title && is_toplevel && (top - getbegy(win)) < MARGIN) { 118 int have = (limit_x - dlg_count_columns(dialog_vars.title)) / 2; 119 int need = x + 5; 120 if (need > have) 121 draw_top = FALSE; 122 } 123 124 if (draw_top) { 125 (void) wmove(win, top, x); 126 if (top_arrow) { 127 (void) wattrset(win, merge_colors(uarrow_attr, attr)); 128 (void) add_acs(win, ACS_UARROW); 129 (void) waddstr(win, "(-)"); 130 } else { 131 (void) wattrset(win, attr); 132 (void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT); 133 } 134 } 135 mouse_mkbutton(top, x - 1, 6, KEY_PPAGE); 136 137 (void) wmove(win, bottom, x); 138 if (bottom_arrow) { 139 (void) wattrset(win, merge_colors(darrow_attr, borderattr)); 140 (void) add_acs(win, ACS_DARROW); 141 (void) waddstr(win, "(+)"); 142 } else { 143 (void) wattrset(win, borderattr); 144 (void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT); 145 } 146 mouse_mkbutton(bottom, x - 1, 6, KEY_NPAGE); 147 148 (void) wmove(win, cur_y, cur_x); 149 wrefresh(win); 150 151 (void) wattrset(win, save); 152 } 153 154 void 155 dlg_draw_scrollbar(WINDOW *win, 156 long first_data, 157 long this_data, 158 long next_data, 159 long total_data, 160 int left, 161 int right, 162 int top, 163 int bottom, 164 chtype attr, 165 chtype borderattr) 166 { 167 char buffer[80]; 168 int percent; 169 int len; 170 int oldy, oldx; 171 172 chtype save = dlg_get_attrs(win); 173 int top_arrow = (first_data != 0); 174 int bottom_arrow = (next_data < total_data); 175 176 getyx(win, oldy, oldx); 177 178 dlg_draw_helpline(win, TRUE); 179 if (bottom_arrow || top_arrow || dialog_state.use_scrollbar) { 180 percent = (!total_data 181 ? 100 182 : (int) ((next_data * 100) 183 / total_data)); 184 185 if (percent < 0) 186 percent = 0; 187 else if (percent > 100) 188 percent = 100; 189 190 (void) wattrset(win, position_indicator_attr); 191 (void) sprintf(buffer, "%d%%", percent); 192 (void) wmove(win, bottom, right - 7); 193 (void) waddstr(win, buffer); 194 if ((len = dlg_count_columns(buffer)) < 4) { 195 (void) wattrset(win, border_attr); 196 whline(win, dlg_boxchar(ACS_HLINE), 4 - len); 197 } 198 } 199 #define BARSIZE(num) (int) (0.5 + (double) ((all_high * (int) (num)) / (double) total_data)) 200 #define ORDSIZE(num) (int) ((double) ((all_high * (int) (num)) / (double) all_diff)) 201 202 if (dialog_state.use_scrollbar) { 203 int all_high = (bottom - top - 1); 204 205 this_data = MAX(0, this_data); 206 207 if (total_data > 0 && all_high > 0) { 208 int all_diff = (int) (total_data + 1); 209 int bar_diff = (int) (next_data + 1 - this_data); 210 int bar_high; 211 int bar_y; 212 213 bar_high = ORDSIZE(bar_diff); 214 if (bar_high <= 0) 215 bar_high = 1; 216 217 if (bar_high < all_high) { 218 int bar_last = BARSIZE(next_data); 219 220 wmove(win, top + 1, right); 221 222 (void) wattrset(win, save); 223 wvline(win, ACS_VLINE | A_REVERSE, all_high); 224 225 bar_y = ORDSIZE(this_data); 226 if (bar_y >= bar_last && bar_y > 0) 227 bar_y = bar_last - 1; 228 if (bar_last - bar_y > bar_high && bar_high > 1) 229 ++bar_y; 230 bar_last = MIN(bar_last, all_high); 231 232 wmove(win, top + 1 + bar_y, right); 233 234 (void) wattrset(win, position_indicator_attr); 235 wattron(win, A_REVERSE); 236 #if defined(WACS_BLOCK) && defined(NCURSES_VERSION) 237 wvline_set(win, WACS_BLOCK, bar_last - bar_y); 238 #else 239 wvline(win, ACS_BLOCK, bar_last - bar_y); 240 #endif 241 } 242 } 243 } 244 dlg_draw_arrows2(win, 245 top_arrow, 246 bottom_arrow, 247 left + ARROWS_COL, 248 top, 249 bottom, 250 attr, 251 borderattr); 252 253 (void) wattrset(win, save); 254 wmove(win, oldy, oldx); 255 } 256 257 void 258 dlg_draw_arrows(WINDOW *win, 259 int top_arrow, 260 int bottom_arrow, 261 int x, 262 int top, 263 int bottom) 264 { 265 dlg_draw_helpline(win, TRUE); 266 dlg_draw_arrows2(win, 267 top_arrow, 268 bottom_arrow, 269 x, 270 top, 271 bottom, 272 menubox_border2_attr, 273 menubox_border_attr); 274 } 275