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/**
** EVENTQUE.H
**
** Copyright (C) 1992, Csaba Biegl
** 820 Stirrup Dr, Nashville, TN, 37221
** csaba@vuse.vanderbilt.edu
**
** This file is distributed under the terms listed in the document
** "copying.cb", available from the author at the address above.
** A copy of "copying.cb" should accompany this file; if not, a copy
** should be available from where this file was obtained. This file
** may not be distributed without a verbatim copy of "copying.cb".
** You should also have received a copy of the GNU General Public
** License along with this program (it is in the file "copying");
** if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
** Cambridge, MA 02139, USA.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**/
#ifndef _EVENTQUE_H_
#define _EVENTQUE_H_
#ifdef __cplusplus
extern "C" {
#endif
/*
* structures:
* BE CAREFUL when hacking!!! -- 16 and 32 bit compilers have to generate
* the same alignments
*/
typedef struct {
unsigned char evt_type; /* event type: 0: keyboard, 1: mouse */
unsigned char evt_kbstat; /* keyboard status (ALT, SHIFT, etc..) */
unsigned char evt_mask; /* mouse event mask */
unsigned char evt_button; /* button status */
unsigned short evt_xpos; /* X coord (or keycode if keybd event) */
unsigned short evt_ypos; /* Y coord */
unsigned long evt_time; /* time stamp of event */
#define evt_keycode evt_xpos /* reuse this slot for keybd events !! */
#define evt_scancode evt_ypos /* store here the BIOS scan code */
} EventRecord;
typedef struct {
unsigned short evq_maxsize; /* max size of event queue */
unsigned short evq_cursize; /* number of events in the queue */
unsigned short evq_rdptr; /* next event to read */
unsigned short evq_wrptr; /* next event to be written */
short evq_xpos; /* current X coordinate of mouse */
short evq_ypos; /* current Y coordinate of mouse */
short evq_xmin; /* minimal mouse X coordinate */
short evq_ymin; /* minimal mouse Y coordinate */
short evq_xmax; /* maximal mouse X coordinate */
short evq_ymax; /* maximal mouse Y coordinate */
short evq_xspeed; /* horizontal speed (mickey/coord) */
short evq_yspeed; /* vertical speed (mickey/coord) */
unsigned short evq_thresh; /* fast movement threshold */
unsigned short evq_accel; /* multiplier for fast move */
unsigned char evq_drawmouse; /* interrupt handler has to draw mouse */
unsigned char evq_moved; /* set if mouse moved */
unsigned char evq_delchar; /* character removed from BIOS buffer */
unsigned char evq_enable; /* event generation control flag */
EventRecord evq_events[1]; /* event buffer space */
} EventQueue;
/*
* event types
*/
#define EVENT_KEYBD 0
#define EVENT_MOUSE 1
#define EVENT_RAWKEY 2
/*
* MOUSE event flag bits
* (also defined in "mousex.h" of the graphics library)
*/
#ifndef M_MOTION
#define M_MOTION 0x001
#define M_LEFT_DOWN 0x002
#define M_LEFT_UP 0x004
#define M_RIGHT_DOWN 0x008
#define M_RIGHT_UP 0x010
#define M_MIDDLE_DOWN 0x020
#define M_MIDDLE_UP 0x040
#define M_BUTTON_DOWN (M_LEFT_DOWN | M_MIDDLE_DOWN | M_RIGHT_DOWN)
#define M_BUTTON_UP (M_LEFT_UP | M_MIDDLE_UP | M_RIGHT_UP)
#define M_BUTTON_CHANGE (M_BUTTON_UP | M_BUTTON_DOWN )
/*
* MOUSE button status bits
*/
#define M_LEFT 1
#define M_RIGHT 2
#define M_MIDDLE 4
#endif /* M_MOTION */
/*
* KEYBOARD status word bits
* (also defined in "mousex.h" of the graphics library)
*/
#ifndef KB_SHIFT
#define KB_RIGHTSHIFT 0x01 /* right shift key depressed */
#define KB_LEFTSHIFT 0x02 /* left shift key depressed */
#define KB_CTRL 0x04 /* CTRL depressed */
#define KB_ALT 0x08 /* ALT depressed */
#define KB_SCROLLOCK 0x10 /* SCROLL LOCK active */
#define KB_NUMLOCK 0x20 /* NUM LOCK active */
#define KB_CAPSLOCK 0x40 /* CAPS LOCK active */
#define KB_INSERT 0x80 /* INSERT state active */
#define KB_SHIFT (KB_LEFTSHIFT | KB_RIGHTSHIFT)
#define KB_RAW_LEFTCTRL 0x01
#define KB_RAW_LEFTALT 0x02
#define KB_RAW_RIGHTCTRL 0x04
#define KB_RAW_RIGHTALT 0x08
#define KB_RAW_RIGHTSHIFT 0x10
#define KB_RAW_LEFTSHIFT 0x20
#define KB_RAW_CAPSLOCK 0x40
#define KB_RAW_SYSREQ 0x80
#define KB_RAW_SHIFT (KB_RAW_LEFTSHIFT | KB_RAW_RIGHTSHIFT)
#define KB_RAW_CTRL (KB_RAW_LEFTCTRL | KB_RAW_RIGHTCTRL)
#define KB_RAW_ALT (KB_RAW_LEFTALT | KB_RAW_RIGHTALT)
#endif /* KB_SHIFT */
/*
* set this bit in 'evq_enable' to generate the corresponding event
*/
#define EVENT_ENABLE(type) (1 << (type))
/*
* prototypes
*/
EventQueue *EventQueueInit(int qsize,int ms_stksize,void (*msdraw)(void));
void EventQueueDeInit(void);
int EventQueueNextEvent(EventQueue *q,EventRecord *e);
#ifdef __cplusplus
}
#endif
#endif /* whole file */
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