source: libcaca/trunk/examples/event.c @ 4328

Last change on this file since 4328 was 4148, checked in by Sam Hocevar, 10 years ago

Update my e-mail address everywhere.

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1/*
2 *  event         event lister for libcaca
3 *  Copyright (c) 2004 Sam Hocevar <sam@hocevar.net>
4 *                All Rights Reserved
5 *
6 *  $Id: event.c 4148 2009-12-19 14:38:38Z sam $
7 *
8 *  This program is free software. It comes without any warranty, to
9 *  the extent permitted by applicable law. You can redistribute it
10 *  and/or modify it under the terms of the Do What The Fuck You Want
11 *  To Public License, Version 2, as published by Sam Hocevar. See
12 *  http://sam.zoy.org/wtfpl/COPYING for more details.
13 */
14
15#include "config.h"
16
17#if !defined(__KERNEL__)
18#   include <stdio.h>
19#   include <string.h>
20#   include <stdlib.h>
21#endif
22
23#include "caca.h"
24
25static caca_canvas_t *cv;
26static caca_display_t *dp;
27
28static void print_event(int, int, caca_event_t *);
29
30int main(int argc, char **argv)
31{
32    caca_event_t *events;
33    int i, h, quit;
34
35    cv = caca_create_canvas(80, 24);
36    if(cv == NULL)
37    {
38        printf("Failed to create canvas\n");
39        return 1;
40    }
41
42    dp = caca_create_display(cv);
43    if(dp == NULL)
44    {
45        printf("Failed to create display\n");
46        return 1;
47    }
48
49    h = caca_get_canvas_height(cv) - 1;
50
51    caca_set_color_ansi(cv, CACA_WHITE, CACA_BLUE);
52    caca_draw_line(cv, 0, 0, caca_get_canvas_width(cv) - 1, 0, ' ');
53
54    caca_draw_line(cv, 0, h, caca_get_canvas_width(cv) - 1, h, ' ');
55    caca_put_str(cv, 0, h, "type \"quit\" to exit");
56
57    caca_refresh_display(dp);
58
59    events = malloc(h * sizeof(caca_event_t));
60    memset(events, 0, h * sizeof(caca_event_t));
61
62    for(quit = 0; quit < 4; )
63    {
64        caca_event_t ev;
65        static char const * quit_string[] = { "", "q", "qu", "qui", "quit" };
66        int ret = caca_get_event(dp, CACA_EVENT_ANY, &ev, -1);
67
68        if(!ret)
69            continue;
70
71        do
72        {
73            /* "quit" quits */
74            if(caca_get_event_type(&ev) & CACA_EVENT_KEY_PRESS)
75            {
76                int key = caca_get_event_key_ch(&ev);
77                if((key == 'q' && quit == 0) || (key == 'u' && quit == 1)
78                    || (key == 'i' && quit == 2) || (key == 't' && quit == 3))
79                    quit++;
80                else if(key == 'q')
81                    quit = 1;
82                else
83                    quit = 0;
84            }
85
86            memmove(events + 1, events, (h - 1) * sizeof(caca_event_t));
87            events[0] = ev;
88
89            ret = caca_get_event(dp, CACA_EVENT_ANY, &ev, 0);
90        }
91        while(ret);
92
93        caca_set_color_ansi(cv, CACA_LIGHTGRAY, CACA_BLACK);
94        caca_clear_canvas(cv);
95
96        /* Print current event */
97        caca_set_color_ansi(cv, CACA_WHITE, CACA_BLUE);
98        caca_draw_line(cv, 0, 0, caca_get_canvas_width(cv) - 1, 0, ' ');
99        print_event(0, 0, events);
100
101        caca_draw_line(cv, 0, h, caca_get_canvas_width(cv) - 1, h, ' ');
102        caca_printf(cv, 0, h, "type \"quit\" to exit: %s", quit_string[quit]);
103
104        /* Print previous events */
105        caca_set_color_ansi(cv, CACA_WHITE, CACA_BLACK);
106        for(i = 1; i < h && caca_get_event_type(&events[i]); i++)
107            print_event(0, i, events + i);
108
109        caca_refresh_display(dp);
110    }
111
112    /* Clean up */
113    free(events);
114    caca_free_display(dp);
115    caca_free_canvas(cv);
116
117    return 0;
118}
119
120static void print_event(int x, int y, caca_event_t *ev)
121{
122    int character;
123
124    switch(caca_get_event_type(ev))
125    {
126    case CACA_EVENT_NONE:
127        caca_printf(cv, x, y, "CACA_EVENT_NONE");
128        break;
129    case CACA_EVENT_KEY_PRESS:
130        character = caca_get_event_key_ch(ev);
131        caca_printf(cv, x, y, "CACA_EVENT_KEY_PRESS 0x%02x (%c)", character,
132                     (character > 0x1f && character < 0x80) ? character : '?');
133        break;
134    case CACA_EVENT_KEY_RELEASE:
135        character = caca_get_event_key_ch(ev);
136        caca_printf(cv, x, y, "CACA_EVENT_KEY_RELEASE 0x%02x (%c)", character,
137                     (character > 0x1f && character < 0x80) ? character : '?');
138        break;
139    case CACA_EVENT_MOUSE_MOTION:
140        caca_printf(cv, x, y, "CACA_EVENT_MOUSE_MOTION %u %u",
141                     caca_get_event_mouse_x(ev), caca_get_event_mouse_y(ev));
142        break;
143    case CACA_EVENT_MOUSE_PRESS:
144        caca_printf(cv, x, y, "CACA_EVENT_MOUSE_PRESS %u",
145                     caca_get_event_mouse_button(ev));
146        break;
147    case CACA_EVENT_MOUSE_RELEASE:
148        caca_printf(cv, x, y, "CACA_EVENT_MOUSE_RELEASE %u",
149                     caca_get_event_mouse_button(ev));
150        break;
151    case CACA_EVENT_RESIZE:
152        caca_printf(cv, x, y, "CACA_EVENT_RESIZE %u %u",
153                     caca_get_event_resize_width(ev),
154                     caca_get_event_resize_height(ev));
155        break;
156    case CACA_EVENT_QUIT:
157        caca_printf(cv, x, y, "CACA_EVENT_QUIT");
158        break;
159    default:
160        caca_printf(cv, x, y, "CACA_EVENT_UNKNOWN");
161    }
162}
163
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