1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/*****************************************************************************
Copyright (C) 1994,1997 Ivan A. Curtis. All rights reserved.
This code must not be re-distributed without these copyright notices intact.
*******************************************************************************
*******************************************************************************
Filename: ~icurtis/src/mx/request.c
Description:
Update History: (most recent first)
I. Curtis 9-Apr-97 12:02 -- Updated
I. Curtis 22-Mar-94 23:11 -- Created.
******************************************************************************/
#include "basic.h"
#include "X11/keysym.h"
#include "alert.h"
#include "request.h"
/******************************************
* Handle an event for a requester window *
******************************************/
int mx_request_event(Display *display, int screen, XEvent *event,
mx_request *req, int *done)
{
XCharStruct xcs;
KeySym key;
int i, j, dir, asc, desc;
char keys[10];
switch(event->type) {
case Expose:
if (event->xexpose.window != req->window)
return False;
/* draw the text string */
XDrawString(display, req->window, req->app->gcd,
req->app->item_border, req->app->item_border + req->app->ascent,
req->text, req->length);
/* determine cursor y posn and height */
req->cur_y = req->app->item_border;
req->cur_h = req->app->ascent + req->app->descent;
/* cursor x position */
if (req->cp == 0)
req->cur_x = req->app->item_border;
else {
XTextExtents(req->app->font, req->text, req->cp,
&dir, &asc, &desc, &xcs);
req->cur_x = req->app->item_border + xcs.width;
}
/* cursor width */
if (req->cp == req->length)
XTextExtents(req->app->font, " ", 1, &dir, &asc, &desc, &xcs);
else
XTextExtents(req->app->font, req->text + req->cp, 1,
&dir, &asc, &desc, &xcs);
req->cur_w = xcs.width;
if (req->inside) /* display cursor */
XFillRectangle(display, req->window, req->app->gcf,
req->cur_x, req->cur_y,
req->cur_w, req->cur_h);
return True;
break;
case KeyPress:
if (event->xkey.window != req->window)
return False;
j = XLookupString((XKeyPressedEvent*)event, keys, 10, &key, 0);
if (j == 1 && keys[0] >= ' ' && keys[0] <= '~') {
if (req->length < req->max_len - 1) { /* insert character */
for (i = req->length + 1; i > req->cp; i--)
req->text[i] = req->text[i - 1];
req->length ++;
req->text[req->cp] = keys[0];
req->cp ++;
XClearArea(display, req->window, 0, 0, 0, 0, True);
}
return True;
}
if (key == XK_End || (j == 1 && keys[0] == 5)) { /* Ctrl-E */
req->cp = req->length;
XClearArea(display, req->window, 0, 0, 0, 0, True);
}
else if (key == XK_Begin || key == XK_Home ||
(j == 1 && keys[0] == 1)) { /* Ctrl-A */
req->cp = 0;
XClearArea(display, req->window, 0, 0, 0, 0, 1);
}
else if (key == XK_Right && req->cp < req->length) {
req->cp ++;
XClearArea(display, req->window, 0, 0, 0, 0, 1);
}
else if (key == XK_Left && req->cp > 0) {
req->cp --;
XClearArea(display, req->window, 0, 0, 0, 0, 1);
}
else if ((key == XK_BackSpace || (j == 1 && keys[0] == 4))
&& req->cp < req->length) { /* Ctrl-D */
for (i = req->cp; i < req->length - 1; i++)
req->text[i] = req->text[i + 1];
req->length --;
XClearArea(display, req->window, 0, 0, 0, 0, 1);
}
else if (key == XK_Delete && req->cp > 0) {
for (i = req->cp - 1; i < req->length - 1; i++)
req->text[i] = req->text[i + 1];
req->length --;
req->cp --;
XClearArea(display, req->window, 0, 0, 0, 0, 1);
}
else if (j == 1 && keys[0] == 11 && req->cp < req->length) { /* Ctrl-K */
req->length = req->cp;
XClearArea(display, req->window, 0, 0, 0, 0, 1);
}
else if (key == XK_Return || key == 1) {
req->text[req->length] = '\0';
*done = 1;
}
return True;
break;
case LeaveNotify:
if (event->xcrossing.window != req->window)
return False;
XFillRectangle(display, req->window, req->app->gcf, req->cur_x, req->cur_y,
req->cur_w, req->cur_h);
req->inside = 0;
return True;
break;
case EnterNotify:
if (event->xcrossing.window != req->window)
return False;
if (!req->inside)
XFillRectangle(display, req->window, req->app->gcf,
req->cur_x, req->cur_y,
req->cur_w, req->cur_h);
req->inside = 1;
return True;
break;
}
return False;
}
/*****************************************
* Pop up a requester on the root window *
* at position x y *
*****************************************/
int mx_popup_request(Display *display, int screen, mx_panel *panel,
int *x, int *y, char *text, int max_len)
{
mx_alert title;
mx_request req;
XEvent event;
int done;
if (!panel)
return -1;
/* determine dimensions of requester window */
req.app = panel->app;
req.text = text;
req.length = strlen(req.text);
req.max_len = max_len;
if (req.app->em * max_len > panel->width)
req.width = req.app->em * max_len +
2 * req.app->item_border;
else
req.width = panel->width + 2 * req.app->item_border;
req.height = req.app->ascent + req.app->descent + 2 * req.app->item_border;
/* determine dimensions of title window */
title.app = req.app;
title.width = req.width;
title.height = req.height;
title.start_item = 0;
title.max_items = 1;
title.item = panel->item + panel->first_item;
/* make sure the wondows are on screen */
mx_adjust_xy(display, title.width + 2 * panel->app->win_border,
req.height * 2 + 3 * panel->app->win_border,
x, y);
/* open title window and set event masks */
title.window =
mx_transient_window_open(display, screen, title.app->win_border, *x, *y,
title.width, title.height);
XSelectInput(display, title.window, ExposureMask | OwnerGrabButtonMask |
ButtonPressMask | ButtonReleaseMask |
EnterWindowMask | LeaveWindowMask);
title.inside = -1;
title.momentary = 0;
/* open requester window and set event masks */
req.window =
mx_transient_window_open(display, screen, req.app->win_border,
*x, *y + title.height + req.app->win_border,
req.width, req.height);
XSelectInput(display, req.window, ExposureMask | OwnerGrabButtonMask |
ButtonPressMask | ButtonReleaseMask |
EnterWindowMask | LeaveWindowMask |
KeyPressMask);
done = 0;
req.inside = 0;
req.cp = 0;
while (!done) {
XNextEvent(display, &event);
if (mx_request_event(display, screen, &event, &req, &done))
continue;
if (mx_alert_event(display, screen, &event, &title, &done, x, y))
continue;
if (event.type == Expose && req.app->expose_fun) {
if ((*(req.app->expose_fun))(&event))
continue;
}
}
mx_window_close(display, title.window);
mx_window_close(display, req.window);
return 0;
}
|
