Hi,
Just throwing a quick writeup into the ring to kickstart the design
discussion ;)
cheers,
Gerd
#ifndef __QEMU_PVTABLET__
#define __QEMU_PVTABLET__ 1
/*
* qemu patavirtual tablet interface
*/
#include <inttypes.h>
/* our virtio-serial channel */
#define QEMU_PVTABLET_NAME "org.qemu.pvtablet.0"
enum qemu_pvtablet_buttons {
QEMU_PVTABLET_BTN_LEFT,
QEMU_PVTABLET_BTN_RIGHT,
QEMU_PVTABLET_BTN_MIDDLE,
/*
* we can handle up to 32 buttons although
* not every has a individual name ;)
*/
};
/* send button down+up events */
typedef struct qemu_pvtablet_button {
uint32_t button;
uint32_t mask;
} qemu_pvtablet_button;
/* send pointer move events */
typedef struct qemu_pvtablet_position {
uint32_t pos_x; /* range: 0 -> 0xffff */
uint32_t pos_y; /* range: 0 -> 0xffff */
} qemu_pvtablet_position;
/*
* specify which display all following events refering to
* (for multihead setups).
*/
typedef struct qemu_pvtablet_display {
/*
* FIXME: spice just uses the display channel number, but that
* doesn't fly in general ...
*/
uint32_t spice_display_channel;
} qemu_pvtablet_display;
enum qemu_pvtablet_type {
QEMU_PVTABLET_MSG_MOVE, /* qemu_pvtablet_position */
QEMU_PVTABLET_MSG_BTN_DOWN, /* qemu_pvtablet_button */
QEMU_PVTABLET_MSG_BTN_UP, /* qemu_pvtablet_button */
QEMU_PVTABLET_MSG_DISPLAY, /* qemu_pvtablet_display */
};
typedef struct qemu_pvtablet_message {
uint32_t size; /* whole message size */
uint32_t type; /* qemu_pvtablet_type */
uint64_t tv_secs;
uint64_t tv_usecs;
union {
qemu_pvtablet_position position;
qemu_pvtablet_button button;
qemu_pvtablet_display display;
} m;
} qemu_pvtablet_message;
#endif /* __QEMU_PVTABLET__ */
