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vnc: rich cursor support. 

Uses VNC_ENCODING_RICH_CURSOR.  Adding XCURSOR support should be
possible without much trouble.  Shouldn't be needed though as
RICH_CURSOR is a superset of XCURSOR.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2010-05-21 11:54:34 +02:00 committed by Anthony Liguori
parent fbe6d7a48d
commit d467b679f2
3 changed files with 73 additions and 12 deletions
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70
vnc.c
View File

@ -49,6 +49,8 @@
static VncDisplay *vnc_display; /* needed for info vnc */
static DisplayChangeListener *dcl;
static int vnc_cursor_define(VncState *vs);
static char *addr_to_string(const char *format,
struct sockaddr_storage *sa,
socklen_t salen) {
@ -549,12 +551,16 @@ static void vnc_dpy_resize(DisplayState *ds)
vnc_flush(vs);
}
}
if (vs->vd->cursor) {
vnc_cursor_define(vs);
}
memset(vs->dirty, 0xFF, sizeof(vs->dirty));
}
}
/* fastest code */
static void vnc_write_pixels_copy(VncState *vs, void *pixels, int size)
static void vnc_write_pixels_copy(VncState *vs, struct PixelFormat *pf,
void *pixels, int size)
{
vnc_write(vs, pixels, size);
}
@ -604,12 +610,12 @@ void vnc_convert_pixel(VncState *vs, uint8_t *buf, uint32_t v)
}
}
static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
static void vnc_write_pixels_generic(VncState *vs, struct PixelFormat *pf,
void *pixels1, int size)
{
uint8_t buf[4];
VncDisplay *vd = vs->vd;
if (vd->server->pf.bytes_per_pixel == 4) {
if (pf->bytes_per_pixel == 4) {
uint32_t *pixels = pixels1;
int n, i;
n = size >> 2;
@ -617,7 +623,7 @@ static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
vnc_convert_pixel(vs, buf, pixels[i]);
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
}
} else if (vd->server->pf.bytes_per_pixel == 2) {
} else if (pf->bytes_per_pixel == 2) {
uint16_t *pixels = pixels1;
int n, i;
n = size >> 1;
@ -625,7 +631,7 @@ static void vnc_write_pixels_generic(VncState *vs, void *pixels1, int size)
vnc_convert_pixel(vs, buf, pixels[i]);
vnc_write(vs, buf, vs->clientds.pf.bytes_per_pixel);
}
} else if (vd->server->pf.bytes_per_pixel == 1) {
} else if (pf->bytes_per_pixel == 1) {
uint8_t *pixels = pixels1;
int n, i;
n = size;
@ -646,7 +652,7 @@ void vnc_raw_send_framebuffer_update(VncState *vs, int x, int y, int w, int h)
row = vd->server->data + y * ds_get_linesize(vs->ds) + x * ds_get_bytes_per_pixel(vs->ds);
for (i = 0; i < h; i++) {
vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds));
vs->write_pixels(vs, &vd->server->pf, row, w * ds_get_bytes_per_pixel(vs->ds));
row += ds_get_linesize(vs->ds);
}
}
@ -752,6 +758,50 @@ static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int
}
}
static void vnc_mouse_set(int x, int y, int visible)
{
/* can we ask the client(s) to move the pointer ??? */
}
static int vnc_cursor_define(VncState *vs)
{
QEMUCursor *c = vs->vd->cursor;
PixelFormat pf = qemu_default_pixelformat(32);
int isize;
if (vnc_has_feature(vs, VNC_FEATURE_RICH_CURSOR)) {
vnc_write_u8(vs, VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
vnc_write_u8(vs, 0); /* padding */
vnc_write_u16(vs, 1); /* # of rects */
vnc_framebuffer_update(vs, c->hot_x, c->hot_y, c->width, c->height,
VNC_ENCODING_RICH_CURSOR);
isize = c->width * c->height * vs->clientds.pf.bytes_per_pixel;
vnc_write_pixels_generic(vs, &pf, c->data, isize);
vnc_write(vs, vs->vd->cursor_mask, vs->vd->cursor_msize);
return 0;
}
return -1;
}
static void vnc_dpy_cursor_define(QEMUCursor *c)
{
VncDisplay *vd = vnc_display;
VncState *vs;
cursor_put(vd->cursor);
qemu_free(vd->cursor_mask);
vd->cursor = c;
cursor_get(vd->cursor);
vd->cursor_msize = cursor_get_mono_bpl(c) * c->height;
vd->cursor_mask = qemu_mallocz(vd->cursor_msize);
cursor_get_mono_mask(c, 0, vd->cursor_mask);
QTAILQ_FOREACH(vs, &vd->clients, next) {
vnc_cursor_define(vs);
}
}
static int find_and_clear_dirty_height(struct VncState *vs,
int y, int last_x, int x)
{
@ -1628,6 +1678,9 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
case VNC_ENCODING_POINTER_TYPE_CHANGE:
vs->features |= VNC_FEATURE_POINTER_TYPE_CHANGE_MASK;
break;
case VNC_ENCODING_RICH_CURSOR:
vs->features |= VNC_FEATURE_RICH_CURSOR_MASK;
break;
case VNC_ENCODING_EXT_KEY_EVENT:
send_ext_key_event_ack(vs);
break;
@ -1648,7 +1701,6 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
break;
}
}
check_pointer_type_change(&vs->mouse_mode_notifier);
}
@ -2294,6 +2346,8 @@ void vnc_display_init(DisplayState *ds)
dcl->dpy_resize = vnc_dpy_resize;
dcl->dpy_setdata = vnc_dpy_setdata;
register_displaychangelistener(ds, dcl);
ds->mouse_set = vnc_mouse_set;
ds->cursor_define = vnc_dpy_cursor_define;
}

8
vnc.h
View File

@ -61,7 +61,7 @@ typedef struct VncState VncState;
typedef int VncReadEvent(VncState *vs, uint8_t *data, size_t len);
typedef void VncWritePixels(VncState *vs, void *data, int size);
typedef void VncWritePixels(VncState *vs, struct PixelFormat *pf, void *data, int size);
typedef void VncSendHextileTile(VncState *vs,
int x, int y, int w, int h,
@ -101,6 +101,10 @@ struct VncDisplay
kbd_layout_t *kbd_layout;
int lock_key_sync;
QEMUCursor *cursor;
int cursor_msize;
uint8_t *cursor_mask;
struct VncSurface guest; /* guest visible surface (aka ds->surface) */
DisplaySurface *server; /* vnc server surface */
@ -273,6 +277,7 @@ enum {
#define VNC_FEATURE_TIGHT 4
#define VNC_FEATURE_ZLIB 5
#define VNC_FEATURE_COPYRECT 6
#define VNC_FEATURE_RICH_CURSOR 7
#define VNC_FEATURE_RESIZE_MASK (1 << VNC_FEATURE_RESIZE)
#define VNC_FEATURE_HEXTILE_MASK (1 << VNC_FEATURE_HEXTILE)
@ -281,6 +286,7 @@ enum {
#define VNC_FEATURE_TIGHT_MASK (1 << VNC_FEATURE_TIGHT)
#define VNC_FEATURE_ZLIB_MASK (1 << VNC_FEATURE_ZLIB)
#define VNC_FEATURE_COPYRECT_MASK (1 << VNC_FEATURE_COPYRECT)
#define VNC_FEATURE_RICH_CURSOR_MASK (1 << VNC_FEATURE_RICH_CURSOR)
/* Client -> Server message IDs */

7
vnchextile.h
View File

@ -189,16 +189,17 @@ static void CONCAT(send_hextile_tile_, NAME)(VncState *vs,
vnc_write_u8(vs, flags);
if (n_colors < 4) {
if (flags & 0x02)
vs->write_pixels(vs, last_bg, sizeof(pixel_t));
vs->write_pixels(vs, &vd->server->pf, last_bg, sizeof(pixel_t));
if (flags & 0x04)
vs->write_pixels(vs, last_fg, sizeof(pixel_t));
vs->write_pixels(vs, &vd->server->pf, last_fg, sizeof(pixel_t));
if (n_subtiles) {
vnc_write_u8(vs, n_subtiles);
vnc_write(vs, data, n_data);
}
} else {
for (j = 0; j < h; j++) {
vs->write_pixels(vs, row, w * ds_get_bytes_per_pixel(vs->ds));
vs->write_pixels(vs, &vd->server->pf, row,
w * ds_get_bytes_per_pixel(vs->ds));
row += ds_get_linesize(vs->ds);
}
}