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comparison mupdf-source/thirdparty/freeglut/src/mswin/fg_input_devices_mswin.c @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * fg_input_devices_mswin.c
3 *
4 * The Windows-specific mouse cursor related stuff.
5 *
6 * Copyright (c) 2012 Stephen J. Baker. All Rights Reserved.
7 * Written by John F. Fay, <fayjf@sourceforge.net>
8 * Creation date: Sat Jan 21, 2012
9 *
10 * Permission is hereby granted, free of charge, to any person obtaining a
11 * copy of this software and associated documentation files (the "Software"),
12 * to deal in the Software without restriction, including without limitation
13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
14 * and/or sell copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following conditions:
16 *
17 * The above copyright notice and this permission notice shall be included
18 * in all copies or substantial portions of the Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 */
27
28 #include <GL/freeglut.h>
29 #include "../fg_internal.h"
30
31 #include <sys/types.h>
32 #include <winbase.h>
33
34 typedef struct {
35 HANDLE fh;
36 COMMTIMEOUTS timeouts_save;
37 DCB dcb_save;
38 } SERIALPORT;
39
40 /* Serial Port Prototypes */
41 SERIALPORT *serial_open ( const char *device );
42 void serial_close ( SERIALPORT *port );
43 int serial_getchar ( SERIALPORT *port );
44 int serial_putchar ( SERIALPORT *port, unsigned char ch );
45 void serial_flush ( SERIALPORT *port );
46
47
48 void fgPlatformRegisterDialDevice ( const char *dial_device )
49 {
50 if (!dial_device){
51 static char devname[256];
52 DWORD size=sizeof(devname);
53 DWORD type = REG_SZ;
54 HKEY key;
55 if (RegOpenKeyA(HKEY_LOCAL_MACHINE,"SOFTWARE\\FreeGLUT",&key)==ERROR_SUCCESS) {
56 if (RegQueryValueExA(key,"DialboxSerialPort",NULL,&type,(LPBYTE)devname,&size)==ERROR_SUCCESS){
57 dial_device=devname;
58 }
59 RegCloseKey(key);
60 }
61 }
62 }
63
64
65 /* Serial Port Functions */
66 SERIALPORT *serial_open(const char *device){
67 HANDLE fh;
68 DCB dcb={sizeof(DCB)};
69 COMMTIMEOUTS timeouts;
70 SERIALPORT *port;
71
72 fh = CreateFile(device,GENERIC_READ|GENERIC_WRITE,0,NULL,
73 OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
74 if (!fh) return NULL;
75
76 port = malloc(sizeof(SERIALPORT));
77 ZeroMemory(port, sizeof(SERIALPORT));
78 port->fh = fh;
79
80 /* save current port settings */
81 GetCommState(fh,&port->dcb_save);
82 GetCommTimeouts(fh,&port->timeouts_save);
83
84 dcb.DCBlength=sizeof(DCB);
85 BuildCommDCB("96,n,8,1",&dcb);
86 SetCommState(fh,&dcb);
87
88 ZeroMemory(&timeouts,sizeof(timeouts));
89 timeouts.ReadTotalTimeoutConstant=1;
90 timeouts.WriteTotalTimeoutConstant=1;
91 SetCommTimeouts(fh,&timeouts);
92
93 serial_flush(port);
94
95 return port;
96 }
97
98 void serial_close(SERIALPORT *port){
99 if (port){
100 /* restore old port settings */
101 SetCommState(port->fh,&port->dcb_save);
102 SetCommTimeouts(port->fh,&port->timeouts_save);
103 CloseHandle(port->fh);
104 free(port);
105 }
106 }
107
108 int serial_getchar(SERIALPORT *port){
109 DWORD n;
110 unsigned char ch;
111 if (!port) return EOF;
112 if (!ReadFile(port->fh,&ch,1,&n,NULL)) return EOF;
113 if (n==1) return ch;
114 return EOF;
115 }
116
117 int serial_putchar(SERIALPORT *port, unsigned char ch){
118 DWORD n;
119 if (!port) return 0;
120 return WriteFile(port->fh,&ch,1,&n,NULL);
121 }
122
123 void serial_flush ( SERIALPORT *port )
124 {
125 FlushFileBuffers(port->fh);
126 }
127