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ui/vdagent: add mouse support

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This patch adds support for mouse messages to the vdagent
implementation.  This can be enabled/disabled using the new
'mouse' parameter for the vdagent chardev.  Default is on.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20210519053940.1888907-1-kraxel@redhat.com
Message-Id: <20210519053940.1888907-6-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2021-05-19 07:39:36 +02:00
parent de74a22cc8
commit 5608191980
3 changed files with 155 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
chardev/char.c
View File

@ -931,6 +931,9 @@ QemuOptsList qemu_chardev_opts = {
},{
.name = "logappend",
.type = QEMU_OPT_BOOL,
},{
.name = "mouse",
.type = QEMU_OPT_BOOL,
#ifdef CONFIG_LINUX
},{
.name = "tight",

4
qapi/char.json
View File

@ -395,11 +395,13 @@
#
# Configuration info for qemu vdagent implementation.
#
# @mouse: enable/disable mouse, default is enabled.
#
# Since: 6.1
#
##
{ 'struct': 'ChardevQemuVDAgent',
'data': { },
'data': { '*mouse': 'bool' },
'base': 'ChardevCommon',
'if': 'defined(CONFIG_SPICE_PROTOCOL)' }

149
ui/vdagent.c
View File

@ -3,18 +3,27 @@
#include "include/qemu-common.h"
#include "chardev/char.h"
#include "qemu/buffer.h"
#include "qemu/option.h"
#include "qemu/units.h"
#include "hw/qdev-core.h"
#include "ui/console.h"
#include "ui/input.h"
#include "trace.h"
#include "qapi/qapi-types-char.h"
#include "qapi/qapi-types-ui.h"
#include "spice/vd_agent.h"
#define VDAGENT_BUFFER_LIMIT (1 * MiB)
#define VDAGENT_MOUSE_DEFAULT true
struct VDAgentChardev {
Chardev parent;
/* config */
bool mouse;
/* guest vdagent */
uint32_t caps;
VDIChunkHeader chunk;
@ -24,6 +33,14 @@ struct VDAgentChardev {
uint8_t *xbuf;
uint32_t xoff, xsize;
Buffer outbuf;
/* mouse */
DeviceState mouse_dev;
uint32_t mouse_x;
uint32_t mouse_y;
uint32_t mouse_btn;
uint32_t mouse_display;
QemuInputHandlerState *mouse_hs;
};
typedef struct VDAgentChardev VDAgentChardev;
@ -137,13 +154,113 @@ static void vdagent_send_caps(VDAgentChardev *vd)
g_autofree VDAgentMessage *msg = g_malloc0(sizeof(VDAgentMessage) +
sizeof(VDAgentAnnounceCapabilities) +
sizeof(uint32_t));
VDAgentAnnounceCapabilities *caps = (void *)msg->data;
msg->type = VD_AGENT_ANNOUNCE_CAPABILITIES;
msg->size = sizeof(VDAgentAnnounceCapabilities) + sizeof(uint32_t);
if (vd->mouse) {
caps->caps[0] |= (1 << VD_AGENT_CAP_MOUSE_STATE);
}
vdagent_send_msg(vd, msg);
}
/* ------------------------------------------------------------------ */
/* mouse events */
static bool have_mouse(VDAgentChardev *vd)
{
return vd->mouse &&
(vd->caps & (1 << VD_AGENT_CAP_MOUSE_STATE));
}
static void vdagent_send_mouse(VDAgentChardev *vd)
{
g_autofree VDAgentMessage *msg = g_malloc0(sizeof(VDAgentMessage) +
sizeof(VDAgentMouseState));
VDAgentMouseState *mouse = (void *)msg->data;
msg->type = VD_AGENT_MOUSE_STATE;
msg->size = sizeof(VDAgentMouseState);
mouse->x = vd->mouse_x;
mouse->y = vd->mouse_y;
mouse->buttons = vd->mouse_btn;
mouse->display_id = vd->mouse_display;
vdagent_send_msg(vd, msg);
}
static void vdagent_pointer_event(DeviceState *dev, QemuConsole *src,
InputEvent *evt)
{
static const int bmap[INPUT_BUTTON__MAX] = {
[INPUT_BUTTON_LEFT] = VD_AGENT_LBUTTON_MASK,
[INPUT_BUTTON_RIGHT] = VD_AGENT_RBUTTON_MASK,
[INPUT_BUTTON_MIDDLE] = VD_AGENT_MBUTTON_MASK,
[INPUT_BUTTON_WHEEL_UP] = VD_AGENT_UBUTTON_MASK,
[INPUT_BUTTON_WHEEL_DOWN] = VD_AGENT_DBUTTON_MASK,
#ifdef VD_AGENT_EBUTTON_MASK
[INPUT_BUTTON_SIDE] = VD_AGENT_SBUTTON_MASK,
[INPUT_BUTTON_EXTRA] = VD_AGENT_EBUTTON_MASK,
#endif
};
VDAgentChardev *vd = container_of(dev, struct VDAgentChardev, mouse_dev);
InputMoveEvent *move;
InputBtnEvent *btn;
uint32_t xres, yres;
switch (evt->type) {
case INPUT_EVENT_KIND_ABS:
move = evt->u.abs.data;
xres = qemu_console_get_width(src, 1024);
yres = qemu_console_get_height(src, 768);
if (move->axis == INPUT_AXIS_X) {
vd->mouse_x = qemu_input_scale_axis(move->value,
INPUT_EVENT_ABS_MIN,
INPUT_EVENT_ABS_MAX,
0, xres);
} else if (move->axis == INPUT_AXIS_Y) {
vd->mouse_y = qemu_input_scale_axis(move->value,
INPUT_EVENT_ABS_MIN,
INPUT_EVENT_ABS_MAX,
0, yres);
}
vd->mouse_display = qemu_console_get_index(src);
break;
case INPUT_EVENT_KIND_BTN:
btn = evt->u.btn.data;
if (btn->down) {
vd->mouse_btn |= bmap[btn->button];
} else {
vd->mouse_btn &= ~bmap[btn->button];
}
break;
default:
/* keep gcc happy */
break;
}
}
static void vdagent_pointer_sync(DeviceState *dev)
{
VDAgentChardev *vd = container_of(dev, struct VDAgentChardev, mouse_dev);
if (vd->caps & (1 << VD_AGENT_CAP_MOUSE_STATE)) {
vdagent_send_mouse(vd);
}
}
static QemuInputHandler vdagent_mouse_handler = {
.name = "vdagent mouse",
.mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS,
.event = vdagent_pointer_event,
.sync = vdagent_pointer_sync,
};
/* ------------------------------------------------------------------ */
/* chardev backend */
@ -152,6 +269,9 @@ static void vdagent_chr_open(Chardev *chr,
bool *be_opened,
Error **errp)
{
VDAgentChardev *vd = QEMU_VDAGENT_CHARDEV(chr);
ChardevQemuVDAgent *cfg = backend->u.qemu_vdagent.data;
#if defined(HOST_WORDS_BIGENDIAN)
/*
* TODO: vdagent protocol is defined to be LE,
@ -161,6 +281,16 @@ static void vdagent_chr_open(Chardev *chr,
return;
#endif
vd->mouse = VDAGENT_MOUSE_DEFAULT;
if (cfg->has_mouse) {
vd->mouse = cfg->mouse;
}
if (vd->mouse) {
vd->mouse_hs = qemu_input_handler_register(&vd->mouse_dev,
&vdagent_mouse_handler);
}
*be_opened = true;
}
@ -184,6 +314,9 @@ static void vdagent_chr_recv_caps(VDAgentChardev *vd, VDAgentMessage *msg)
if (caps->request) {
vdagent_send_caps(vd);
}
if (have_mouse(vd) && vd->mouse_hs) {
qemu_input_handler_activate(vd->mouse_hs);
}
}
static void vdagent_chr_recv_msg(VDAgentChardev *vd, VDAgentMessage *msg)
@ -312,18 +445,34 @@ static void vdagent_chr_set_fe_open(struct Chardev *chr, int fe_open)
/* reset state */
vdagent_reset_bufs(vd);
vd->caps = 0;
if (vd->mouse_hs) {
qemu_input_handler_deactivate(vd->mouse_hs);
}
return;
}
trace_vdagent_open();
}
static void vdagent_chr_parse(QemuOpts *opts, ChardevBackend *backend,
Error **errp)
{
ChardevQemuVDAgent *cfg;
backend->type = CHARDEV_BACKEND_KIND_QEMU_VDAGENT;
cfg = backend->u.qemu_vdagent.data = g_new0(ChardevQemuVDAgent, 1);
qemu_chr_parse_common(opts, qapi_ChardevQemuVDAgent_base(cfg));
cfg->has_mouse = true;
cfg->mouse = qemu_opt_get_bool(opts, "mouse", VDAGENT_MOUSE_DEFAULT);
}
/* ------------------------------------------------------------------ */
static void vdagent_chr_class_init(ObjectClass *oc, void *data)
{
ChardevClass *cc = CHARDEV_CLASS(oc);
cc->parse = vdagent_chr_parse;
cc->open = vdagent_chr_open;
cc->chr_write = vdagent_chr_write;
cc->chr_set_fe_open = vdagent_chr_set_fe_open;