1/* 2 * $Id: arrows.c,v 1.51 2013/09/02 15:10:09 tom Exp $ 3 * 4 * arrows.c -- draw arrows to indicate end-of-range for lists 5 * 6 * Copyright 2000-2012,2013 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 44static chtype 45merge_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 */ 70void 71dlg_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 && dialog_vars.help_line[0] != 0 78 && (bottom = getmaxy(win) - 1) > 0) { 79 chtype attr = A_NORMAL; 80 int cols = dlg_count_columns(dialog_vars.help_line); 81 int other = decorations ? (ON_LEFT + ON_RIGHT) : 0; 82 int avail = (getmaxx(win) - other - 2); 83 int limit = dlg_count_real_columns(dialog_vars.help_line) + 2; 84 85 if (limit < avail) { 86 getyx(win, cur_y, cur_x); 87 other = decorations ? ON_LEFT : 0; 88 (void) wmove(win, bottom, other + (avail - limit) / 2); 89 waddch(win, '['); 90 dlg_print_text(win, dialog_vars.help_line, cols, &attr); 91 waddch(win, ']'); 92 wmove(win, cur_y, cur_x); 93 } 94 } 95} 96 97void 98dlg_draw_arrows2(WINDOW *win, 99 int top_arrow, 100 int bottom_arrow, 101 int x, 102 int top, 103 int bottom, 104 chtype attr, 105 chtype borderattr) 106{ 107 chtype save = dlg_get_attrs(win); 108 int cur_x, cur_y; 109 int limit_x = getmaxx(win); 110 bool draw_top = TRUE; 111 bool is_toplevel = (wgetparent(win) == stdscr); 112 113 getyx(win, cur_y, cur_x); 114 115 /* 116 * If we're drawing a centered title, do not overwrite with the arrows. 117 */ 118 if (dialog_vars.title && is_toplevel && (top - getbegy(win)) < MARGIN) { 119 int have = (limit_x - dlg_count_columns(dialog_vars.title)) / 2; 120 int need = x + 5; 121 if (need > have) 122 draw_top = FALSE; 123 } 124 125 if (draw_top) { 126 (void) wmove(win, top, x); 127 if (top_arrow) { 128 (void) wattrset(win, merge_colors(uarrow_attr, attr)); 129 (void) add_acs(win, ACS_UARROW); 130 (void) waddstr(win, "(-)"); 131 } else { 132 (void) wattrset(win, attr); 133 (void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT); 134 } 135 } 136 mouse_mkbutton(top, x - 1, 6, KEY_PPAGE); 137 138 (void) wmove(win, bottom, x); 139 if (bottom_arrow) { 140 (void) wattrset(win, merge_colors(darrow_attr, borderattr)); 141 (void) add_acs(win, ACS_DARROW); 142 (void) waddstr(win, "(+)"); 143 } else { 144 (void) wattrset(win, borderattr); 145 (void) whline(win, dlg_boxchar(ACS_HLINE), ON_LEFT); 146 } 147 mouse_mkbutton(bottom, x - 1, 6, KEY_NPAGE); 148 149 (void) wmove(win, cur_y, cur_x); 150 wrefresh(win); 151 152 (void) wattrset(win, save); 153} 154 155void 156dlg_draw_scrollbar(WINDOW *win, 157 long first_data, 158 long this_data, 159 long next_data, 160 long total_data, 161 int left, 162 int right, 163 int top, 164 int bottom, 165 chtype attr, 166 chtype borderattr) 167{ 168 char buffer[80]; 169 int percent; 170 int len; 171 int oldy, oldx; 172 173 chtype save = dlg_get_attrs(win); 174 int top_arrow = (first_data != 0); 175 int bottom_arrow = (next_data < total_data); 176 177 getyx(win, oldy, oldx); 178 179 dlg_draw_helpline(win, TRUE); 180 if (bottom_arrow || top_arrow || dialog_state.use_scrollbar) { 181 percent = (!total_data 182 ? 100 183 : (int) ((next_data * 100) 184 / total_data)); 185 186 if (percent < 0) 187 percent = 0; 188 else if (percent > 100) 189 percent = 100; 190 191 (void) wattrset(win, position_indicator_attr); 192 (void) sprintf(buffer, "%d%%", percent); 193 (void) wmove(win, bottom, right - 7); 194 (void) waddstr(win, buffer); 195 if ((len = dlg_count_columns(buffer)) < 4) { 196 (void) wattrset(win, border_attr); 197 whline(win, dlg_boxchar(ACS_HLINE), 4 - len); 198 } 199 } 200#define BARSIZE(num) (int) (0.5 + (double) ((all_high * (int) (num)) / (double) total_data)) 201#define ORDSIZE(num) (int) ((double) ((all_high * (int) (num)) / (double) all_diff)) 202 203 if (dialog_state.use_scrollbar) { 204 int all_high = (bottom - top - 1); 205 206 this_data = MAX(0, this_data); 207 208 if (total_data > 0 && all_high > 0) { 209 int all_diff = (int) (total_data + 1); 210 int bar_diff = (int) (next_data + 1 - this_data); 211 int bar_high; 212 int bar_y; 213 214 bar_high = ORDSIZE(bar_diff); 215 if (bar_high <= 0) 216 bar_high = 1; 217 218 if (bar_high < all_high) { 219 int bar_last = BARSIZE(next_data); 220 221 wmove(win, top + 1, right); 222 223 (void) wattrset(win, save); 224 wvline(win, ACS_VLINE | A_REVERSE, all_high); 225 226 bar_y = ORDSIZE(this_data); 227 if (bar_y >= bar_last && bar_y > 0) 228 bar_y = bar_last - 1; 229 if (bar_last - bar_y > bar_high && bar_high > 1) 230 ++bar_y; 231 bar_last = MIN(bar_last, all_high); 232 233 wmove(win, top + 1 + bar_y, right); 234 235 (void) wattrset(win, position_indicator_attr); 236 wattron(win, A_REVERSE); 237#if defined(WACS_BLOCK) && defined(NCURSES_VERSION) && defined(USE_WIDE_CURSES) 238 wvline_set(win, WACS_BLOCK, bar_last - bar_y); 239#else 240 wvline(win, ACS_BLOCK, bar_last - bar_y); 241#endif 242 } 243 } 244 } 245 dlg_draw_arrows2(win, 246 top_arrow, 247 bottom_arrow, 248 left + ARROWS_COL, 249 top, 250 bottom, 251 attr, 252 borderattr); 253 254 (void) wattrset(win, save); 255 wmove(win, oldy, oldx); 256} 257 258void 259dlg_draw_arrows(WINDOW *win, 260 int top_arrow, 261 int bottom_arrow, 262 int x, 263 int top, 264 int bottom) 265{ 266 dlg_draw_helpline(win, TRUE); 267 dlg_draw_arrows2(win, 268 top_arrow, 269 bottom_arrow, 270 x, 271 top, 272 bottom, 273 menubox_border2_attr, 274 menubox_border_attr); 275} 276