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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