1 /* 2 * $Id: arrows.c,v 1.36 2011/06/27 09:13:56 tom Exp $ 3 * 4 * arrows.c -- draw arrows to indicate end-of-range for lists 5 * 6 * Copyright 2000-2010,2011 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_limit_columns(dialog_vars.help_line, avail, 0); 83 84 if (limit > 0) { 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; 110 111 getyx(win, cur_y, cur_x); 112 113 /* 114 * If we're drawing a centered title, do not overwrite with the arrows. 115 */ 116 if (dialog_vars.title) { 117 int have = (limit_x - dlg_count_columns(dialog_vars.title)) / 2; 118 int need = x + 5; 119 if (need > have) 120 draw_top = FALSE; 121 } 122 123 if (draw_top) { 124 (void) wmove(win, top, x); 125 if (top_arrow) { 126 wattrset(win, merge_colors(uarrow_attr, attr)); 127 (void) add_acs(win, ACS_UARROW); 128 (void) waddstr(win, "(-)"); 129 } else { 130 wattrset(win, attr); 131 (void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT); 132 } 133 } 134 mouse_mkbutton(top, x - 1, 6, KEY_PPAGE); 135 136 (void) wmove(win, bottom, x); 137 if (bottom_arrow) { 138 wattrset(win, merge_colors(darrow_attr, attr)); 139 (void) add_acs(win, ACS_DARROW); 140 (void) waddstr(win, "(+)"); 141 } else { 142 wattrset(win, borderattr); 143 (void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT); 144 } 145 mouse_mkbutton(bottom, x - 1, 6, KEY_NPAGE); 146 147 (void) wmove(win, cur_y, cur_x); 148 wrefresh(win); 149 150 wattrset(win, save); 151 } 152 153 void 154 dlg_draw_scrollbar(WINDOW *win, 155 long first_data, 156 long this_data, 157 long next_data, 158 long total_data, 159 int left, 160 int right, 161 int top, 162 int bottom, 163 chtype attr, 164 chtype borderattr) 165 { 166 char buffer[80]; 167 int percent; 168 int len; 169 int oldy, oldx, maxy, maxx; 170 171 chtype save = dlg_get_attrs(win); 172 int top_arrow = (first_data != 0); 173 int bottom_arrow = (next_data < total_data); 174 175 getyx(win, oldy, oldx); 176 getmaxyx(win, maxy, maxx); 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 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 wattrset(win, border_attr); 196 whline(win, dlg_boxchar(ACS_HLINE), 4 - len); 197 } 198 } 199 #define BARSIZE(num) (int) (((all_high * (num)) + all_high - 1) / total_data) 200 201 if (dialog_state.use_scrollbar) { 202 int all_high = (bottom - top - 1); 203 204 if (total_data > 0 && all_high > 0) { 205 int bar_high; 206 int bar_y; 207 208 bar_high = BARSIZE(next_data - this_data); 209 if (bar_high <= 0) 210 bar_high = 1; 211 212 if (bar_high < all_high) { 213 wmove(win, top + 1, right); 214 215 wattrset(win, save); 216 wvline(win, ACS_VLINE | A_REVERSE, all_high); 217 218 bar_y = BARSIZE(this_data); 219 if (bar_y > all_high - bar_high) 220 bar_y = all_high - bar_high; 221 222 wmove(win, top + 1 + bar_y, right); 223 224 wattrset(win, position_indicator_attr); 225 wattron(win, A_REVERSE); 226 wvline(win, ACS_BLOCK, bar_high); 227 } 228 } 229 } 230 dlg_draw_arrows2(win, 231 top_arrow, 232 bottom_arrow, 233 left + ARROWS_COL, 234 top, 235 bottom, 236 attr, 237 borderattr); 238 239 wattrset(win, save); 240 wmove(win, oldy, oldx); 241 } 242 243 void 244 dlg_draw_arrows(WINDOW *win, 245 int top_arrow, 246 int bottom_arrow, 247 int x, 248 int top, 249 int bottom) 250 { 251 dlg_draw_helpline(win, TRUE); 252 dlg_draw_arrows2(win, 253 top_arrow, 254 bottom_arrow, 255 x, 256 top, 257 bottom, 258 menubox_attr, 259 menubox_border_attr); 260 } 261