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/*
* VBMouse - DOS mouse driver resident part
* Copyright (C) 2022 Javier S. Pedro
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef DOSTSR_H
#define DOSTSR_H
#include <stdbool.h>
#include <stdint.h>
#include "vbox.h"
#define USE_VIRTUALBOX 1
#define NUM_BUTTONS 3
#define DRIVER_VERSION_MAJOR 8
#define DRIVER_VERSION_MINOR 0x20
struct point {
int16_t x, y;
};
typedef struct tsrdata {
// TSR installation data
/** Previous int33 ISR, storing it for uninstall. */
void (__interrupt __far *prev_int33_handler)();
// Video settings
uint8_t screen_mode;
uint8_t screen_page;
bool screen_text_mode;
struct point screen_max;
// Current mouse settings
struct point mickeysPerLine; // mickeys per 8 pixels
uint16_t doubleSpeedThreshold; // mickeys
struct point min;
struct point max;
int16_t visible_count;
uint8_t cursor_text_type;
uint16_t cursor_text_and_mask, cursor_text_xor_mask;
struct point cursor_hotspot;
uint16_t cursor_graphic[16+16];
// Current mouse status
/** Current cursor position (in pixels). */
struct point pos;
/** Current remainder of movement that does not yet translate to an entire pixel
* (8ths of pixel right now). */
struct point pos_frac;
/** Current delta movement (in mickeys) since the last report. */
struct point delta;
/** Total mickeys moved in the last second. */
uint16_t total_motion;
/** Ticks when the above value was last reset. */
uint16_t last_ticks;
/** Current status of buttons (as bitfield). */
uint16_t buttons;
struct {
struct buttoncounter {
struct point last;
uint16_t count;
} pressed, released;
} button[NUM_BUTTONS];
/** Whether the cursor is currently displayed or not. */
bool cursor_visible;
struct point cursor_pos;
uint16_t cursor_prev_char;
// Current handlers
void (__far *event_handler)();
uint8_t event_mask;
#if USE_VIRTUALBOX
/** VirtualBox is available. */
bool vbavail : 1;
/** Want to use the VirtualBox "host" cursor. */
bool vbwantcursor : 1;
/** Have VirtualBox absolute coordinates. */
bool vbhaveabs : 1;
struct vboxcomm vb;
#endif
} TSRDATA;
typedef TSRDATA * PTSRDATA;
typedef TSRDATA __far * LPTSRDATA;
extern void __declspec(naked) __far int33_isr(void);
extern LPTSRDATA __far get_tsr_data(bool installed);
extern int resident_end;
#endif
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