Chameleon

Chameleon Svn Source Tree

Root/branches/ErmaC/Modules/i386/config/lxdialog/inputbox.c

1/*␊
2 * inputbox.c -- implements the input box␊
3 *␊
4 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)␊
5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)␊
6 *␊
7 * This program is free software; you can redistribute it and/or␊
8 * modify it under the terms of the GNU General Public License␊
9 * as published by the Free Software Foundation; either version 2␊
10 * of the License, or (at your option) any later version.␊
11 *␊
12 * This program is distributed in the hope that it will be useful,␊
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of␊
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the␊
15 * GNU General Public License for more details.␊
16 *␊
17 * You should have received a copy of the GNU General Public License␊
18 * along with this program; if not, write to the Free Software␊
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.␊
20 */␊
21␊
22#include "dialog.h"␊
23␊
24char dialog_input_result[MAX_LEN + 1];␊
25␊
26/*␊
27 * Print the termination buttons␊
28 */␊
29static void print_buttons(WINDOW * dialog, int height, int width, int selected)␊
30{␊
31␉int x = width / 2 - 11;␊
32␉int y = height - 2;␊
33␊
34␉print_button(dialog, gettext(" Ok "), y, x, selected == 0);␊
35␉print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);␊
36␊
37␉wmove(dialog, y, x + 1 + 14 * selected);␊
38␉wrefresh(dialog);␊
39}␊
40␊
41/*␊
42 * Display a dialog box for inputing a string␊
43 */␊
44int dialog_inputbox(const char *title, const char *prompt, int height, int width,␊
45 const char *init)␊
46{␊
47␉int i, x, y, box_y, box_x, box_width;␊
48␉int input_x = 0, scroll = 0, key = 0, button = -1;␊
49␉char *instr = dialog_input_result;␊
50␉WINDOW *dialog;␊
51␊
52␉if (!init)␊
53␉␉instr[0] = '\0';␊
54␉else␊
55␉␉strcpy(instr, init);␊
56␊
57do_resize:␊
58␉if (getmaxy(stdscr) <= (height - 2))␊
59␉␉return -ERRDISPLAYTOOSMALL;␊
60␉if (getmaxx(stdscr) <= (width - 2))␊
61␉␉return -ERRDISPLAYTOOSMALL;␊
62␊
63␉/* center dialog box on screen */␊
64␉x = (COLS - width) / 2;␊
65␉y = (LINES - height) / 2;␊
66␊
67␉draw_shadow(stdscr, y, x, height, width);␊
68␊
69␉dialog = newwin(height, width, y, x);␊
70␉keypad(dialog, TRUE);␊
71␊
72␉draw_box(dialog, 0, 0, height, width,␊
73␉␉ dlg.dialog.atr, dlg.border.atr);␊
74␉wattrset(dialog, dlg.border.atr);␊
75␉mvwaddch(dialog, height - 3, 0, ACS_LTEE);␊
76␉for (i = 0; i < width - 2; i++)␊
77␉␉waddch(dialog, ACS_HLINE);␊
78␉wattrset(dialog, dlg.dialog.atr);␊
79␉waddch(dialog, ACS_RTEE);␊
80␊
81␉print_title(dialog, title, width);␊
82␊
83␉wattrset(dialog, dlg.dialog.atr);␊
84␉print_autowrap(dialog, prompt, width - 2, 1, 3);␊
85␊
86␉/* Draw the input field box */␊
87␉box_width = width - 6;␊
88␉getyx(dialog, y, x);␊
89␉box_y = y + 2;␊
90␉box_x = (width - box_width) / 2;␊
91␉draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,␊
92␉␉ dlg.dialog.atr, dlg.border.atr);␊
93␊
94␉print_buttons(dialog, height, width, 0);␊
95␊
96␉/* Set up the initial value */␊
97␉wmove(dialog, box_y, box_x);␊
98␉wattrset(dialog, dlg.inputbox.atr);␊
99␊
100␉input_x = strlen(instr);␊
101␊
102␉if (input_x >= box_width) {␊
103␉␉scroll = input_x - box_width + 1;␊
104␉␉input_x = box_width - 1;␊
105␉␉for (i = 0; i < box_width - 1; i++)␊
106␉␉␉waddch(dialog, instr[scroll + i]);␊
107␉} else {␊
108␉␉waddstr(dialog, instr);␊
109␉}␊
110␊
111␉wmove(dialog, box_y, box_x + input_x);␊
112␊
113␉wrefresh(dialog);␊
114␊
115␉while (key != KEY_ESC) {␊
116␉␉key = wgetch(dialog);␊
117␊
118␉␉if (button == -1) {␉/* Input box selected */␊
119␉␉␉switch (key) {␊
120␉␉␉case TAB:␊
121␉␉␉case KEY_UP:␊
122␉␉␉case KEY_DOWN:␊
123␉␉␉␉break;␊
124␉␉␉case KEY_LEFT:␊
125␉␉␉␉continue;␊
126␉␉␉case KEY_RIGHT:␊
127␉␉␉␉continue;␊
128␉␉␉case KEY_BACKSPACE:␊
129␉␉␉case 127:␊
130␉␉␉␉if (input_x || scroll) {␊
131␉␉␉␉␉wattrset(dialog, dlg.inputbox.atr);␊
132␉␉␉␉␉if (!input_x) {␊
133␉␉␉␉␉␉scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);␊
134␉␉␉␉␉␉wmove(dialog, box_y, box_x);␊
135␉␉␉␉␉␉for (i = 0; i < box_width; i++)␊
136␉␉␉␉␉␉␉waddch(dialog,␊
137␉␉␉␉␉␉␉ instr[scroll + input_x + i] ?␊
138␉␉␉␉␉␉␉ instr[scroll + input_x + i] : ' ');␊
139␉␉␉␉␉␉input_x = strlen(instr) - scroll;␊
140␉␉␉␉␉} else␊
141␉␉␉␉␉␉input_x--;␊
142␉␉␉␉␉instr[scroll + input_x] = '\0';␊
143␉␉␉␉␉mvwaddch(dialog, box_y, input_x + box_x, ' ');␊
144␉␉␉␉␉wmove(dialog, box_y, input_x + box_x);␊
145␉␉␉␉␉wrefresh(dialog);␊
146␉␉␉␉}␊
147␉␉␉␉continue;␊
148␉␉␉default:␊
149␉␉␉␉if (key < 0x100 && isprint(key)) {␊
150␉␉␉␉␉if (scroll + input_x < MAX_LEN) {␊
151␉␉␉␉␉␉wattrset(dialog, dlg.inputbox.atr);␊
152␉␉␉␉␉␉instr[scroll + input_x] = key;␊
153␉␉␉␉␉␉instr[scroll + input_x + 1] = '\0';␊
154␉␉␉␉␉␉if (input_x == box_width - 1) {␊
155␉␉␉␉␉␉␉scroll++;␊
156␉␉␉␉␉␉␉wmove(dialog, box_y, box_x);␊
157␉␉␉␉␉␉␉for (i = 0; i < box_width - 1; i++)␊
158␉␉␉␉␉␉␉␉waddch(dialog, instr [scroll + i]);␊
159␉␉␉␉␉␉} else {␊
160␉␉␉␉␉␉␉wmove(dialog, box_y, input_x++ + box_x);␊
161␉␉␉␉␉␉␉waddch(dialog, key);␊
162␉␉␉␉␉␉}␊
163␉␉␉␉␉␉wrefresh(dialog);␊
164␉␉␉␉␉} else␊
165␉␉␉␉␉␉flash();␉/* Alarm user about overflow */␊
166␉␉␉␉␉continue;␊
167␉␉␉␉}␊
168␉␉␉}␊
169␉␉}␊
170␉␉switch (key) {␊
171␉␉case 'O':␊
172␉␉case 'o':␊
173␉␉␉delwin(dialog);␊
174␉␉␉return 0;␊
175␉␉case 'H':␊
176␉␉case 'h':␊
177␉␉␉delwin(dialog);␊
178␉␉␉return 1;␊
179␉␉case KEY_UP:␊
180␉␉case KEY_LEFT:␊
181␉␉␉switch (button) {␊
182␉␉␉case -1:␊
183␉␉␉␉button = 1;␉/* Indicates "Help" button is selected */␊
184␉␉␉␉print_buttons(dialog, height, width, 1);␊
185␉␉␉␉break;␊
186␉␉␉case 0:␊
187␉␉␉␉button = -1;␉/* Indicates input box is selected */␊
188␉␉␉␉print_buttons(dialog, height, width, 0);␊
189␉␉␉␉wmove(dialog, box_y, box_x + input_x);␊
190␉␉␉␉wrefresh(dialog);␊
191␉␉␉␉break;␊
192␉␉␉case 1:␊
193␉␉␉␉button = 0;␉/* Indicates "OK" button is selected */␊
194␉␉␉␉print_buttons(dialog, height, width, 0);␊
195␉␉␉␉break;␊
196␉␉␉}␊
197␉␉␉break;␊
198␉␉case TAB:␊
199␉␉case KEY_DOWN:␊
200␉␉case KEY_RIGHT:␊
201␉␉␉switch (button) {␊
202␉␉␉case -1:␊
203␉␉␉␉button = 0;␉/* Indicates "OK" button is selected */␊
204␉␉␉␉print_buttons(dialog, height, width, 0);␊
205␉␉␉␉break;␊
206␉␉␉case 0:␊
207␉␉␉␉button = 1;␉/* Indicates "Help" button is selected */␊
208␉␉␉␉print_buttons(dialog, height, width, 1);␊
209␉␉␉␉break;␊
210␉␉␉case 1:␊
211␉␉␉␉button = -1;␉/* Indicates input box is selected */␊
212␉␉␉␉print_buttons(dialog, height, width, 0);␊
213␉␉␉␉wmove(dialog, box_y, box_x + input_x);␊
214␉␉␉␉wrefresh(dialog);␊
215␉␉␉␉break;␊
216␉␉␉}␊
217␉␉␉break;␊
218␉␉case ' ':␊
219␉␉case '\n':␊
220␉␉␉delwin(dialog);␊
221␉␉␉return (button == -1 ? 0 : button);␊
222␉␉case 'X':␊
223␉␉case 'x':␊
224␉␉␉key = KEY_ESC;␊
225␉␉␉break;␊
226␉␉case KEY_ESC:␊
227␉␉␉key = on_key_esc(dialog);␊
228␉␉␉break;␊
229␉␉case KEY_RESIZE:␊
230␉␉␉delwin(dialog);␊
231␉␉␉on_key_resize();␊
232␉␉␉goto do_resize;␊
233␉␉}␊
234␉}␊
235␊
236␉delwin(dialog);␊
237␉return KEY_ESC;␉␉/* ESC pressed */␊
238}␊
239

Archive Download this file

Revision: 1621