source: libcaca/trunk/caca/driver_conio.c @ 1060

Last change on this file since 1060 was 1006, checked in by Sam Hocevar, 14 years ago
  • Fixed libcaca prototypes so that all functions use the errno mechanism and return a value.
  • Property svn:keywords set to Id
File size: 3.8 KB
Line 
1/*
2 *  libcaca       Colour ASCII-Art library
3 *  Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org>
4 *                All Rights Reserved
5 *
6 *  $Id: driver_conio.c 1006 2006-08-02 13:12:43Z sam $
7 *
8 *  This library is free software; you can redistribute it and/or
9 *  modify it under the terms of the Do What The Fuck You Want To
10 *  Public License, Version 2, as published by Sam Hocevar. See
11 *  http://sam.zoy.org/wtfpl/COPYING for more details.
12 */
13
14/*
15 *  This file contains the libcaca DOS/conio.h input and output driver
16 */
17
18#include "config.h"
19#include "common.h"
20
21#if defined(USE_CONIO)
22
23#include <dos.h>
24#include <conio.h>
25#if defined(SCREENUPDATE_IN_PC_H)
26#   include <pc.h>
27#endif
28
29#include <stdlib.h>
30
31#include "caca.h"
32#include "caca_internals.h"
33#include "cucul.h"
34#include "cucul_internals.h"
35
36struct driver_private
37{
38    struct text_info ti;
39    char *screen;
40};
41
42static int conio_init_graphics(caca_display_t *dp)
43{
44    dp->drv.p = malloc(sizeof(struct driver_private));
45
46    _wscroll = 0;
47    _setcursortype(_NOCURSOR);
48    clrscr();
49
50    gettextinfo(&dp->drv.p->ti);
51    dp->drv.p->screen = malloc(2 * dp->drv.p->ti.screenwidth
52                                 * dp->drv.p->ti.screenheight * sizeof(char));
53    if(dp->drv.p->screen == NULL)
54        return -1;
55#   if defined(SCREENUPDATE_IN_PC_H)
56    ScreenRetrieve(dp->drv.p->screen);
57#   else
58    /* FIXME */
59#   endif
60    _cucul_set_canvas_size(dp->cv, dp->drv.p->ti.screenwidth,
61                                   dp->drv.p->ti.screenheight);
62    return 0;
63}
64
65static int conio_end_graphics(caca_display_t *dp)
66{
67    _wscroll = 1;
68    textcolor((enum COLORS)WHITE);
69    textbackground((enum COLORS)BLACK);
70    gotoxy(dp->cv->width, dp->cv->height);
71    cputs("\r\n");
72    _setcursortype(_NORMALCURSOR);
73
74    free(dp->drv.p->screen);
75    free(dp->drv.p);
76
77    return 0;
78}
79
80static int conio_set_display_title(caca_display_t *dp, char const *title)
81{
82    return -1;
83}
84
85static unsigned int conio_get_display_width(caca_display_t *dp)
86{
87    /* Fallback to a 6x10 font */
88    return dp->cv->width * 6;
89}
90
91static unsigned int conio_get_display_height(caca_display_t *dp)
92{
93    /* Fallback to a 6x10 font */
94    return dp->cv->height * 10;
95}
96
97static void conio_display(caca_display_t *dp)
98{
99    char *screen = dp->drv.p->screen;
100    uint32_t *attr = dp->cv->attr;
101    uint32_t *chars = dp->cv->chars;
102    int n;
103
104    for(n = dp->cv->height * dp->cv->width; n--; )
105    {
106        *screen++ = cucul_utf32_to_cp437(*chars++);
107        *screen++ = _cucul_argb32_to_ansi8(*attr++);
108    }
109#   if defined(SCREENUPDATE_IN_PC_H)
110    ScreenUpdate(dp->drv.p->screen);
111#   else
112    /* FIXME */
113#   endif
114}
115
116static void conio_handle_resize(caca_display_t *dp)
117{
118    /* We know nothing about our window */
119    dp->resize.w = dp->cv->width;
120    dp->resize.h = dp->cv->height;
121}
122
123static int conio_get_event(caca_display_t *dp, caca_event_t *ev)
124{
125    unsigned char ch;
126    caca_event_t release;
127
128    if(!_conio_kbhit())
129    {
130        ev->type = CACA_EVENT_NONE;
131        return 0;
132    }
133
134    ch = getch();
135
136    ev->type = CACA_EVENT_KEY_PRESS;
137    ev->data.key.ch = ch;
138    ev->data.key.utf32 = (uint32_t)ch;
139    ev->data.key.utf8[0] = ch;
140    ev->data.key.utf8[1] = '\0';
141
142    release = *ev;
143    release.type = CACA_EVENT_KEY_RELEASE;
144    _push_event(dp, &release);
145
146    return 1;
147}
148
149/*
150 * Driver initialisation
151 */
152
153int conio_install(caca_display_t *dp)
154{
155    dp->drv.driver = CACA_DRIVER_CONIO;
156
157    dp->drv.init_graphics = conio_init_graphics;
158    dp->drv.end_graphics = conio_end_graphics;
159    dp->drv.set_display_title = conio_set_display_title;
160    dp->drv.get_display_width = conio_get_display_width;
161    dp->drv.get_display_height = conio_get_display_height;
162    dp->drv.display = conio_display;
163    dp->drv.handle_resize = conio_handle_resize;
164    dp->drv.get_event = conio_get_event;
165    dp->drv.set_mouse = NULL;
166
167    return 0;
168}
169
170#endif /* USE_CONIO */
171
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