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console: add dpy_ui_info_supported

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Allow ui code to check whenever the emulated
display supports display change notifications.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2015-03-13 12:21:14 +01:00
parent cf1ecc82ab
commit b7fb49f0c7
2 changed files with 7 additions and 1 deletions
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1
include/ui/console.h
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@ -228,6 +228,7 @@ void update_displaychangelistener(DisplayChangeListener *dcl,
uint64_t interval);
void unregister_displaychangelistener(DisplayChangeListener *dcl);
bool dpy_ui_info_supported(QemuConsole *con);
int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info);
void dpy_gfx_update(QemuConsole *con, int x, int y, int w, int h);

7
ui/console.c
View File

@ -1391,11 +1391,16 @@ static void dpy_set_ui_info_timer(void *opaque)
con->hw_ops->ui_info(con->hw, con->head, &con->ui_info);
}
bool dpy_ui_info_supported(QemuConsole *con)
{
return con->hw_ops->ui_info != NULL;
}
int dpy_set_ui_info(QemuConsole *con, QemuUIInfo *info)
{
assert(con != NULL);
con->ui_info = *info;
if (!con->hw_ops->ui_info) {
if (!dpy_ui_info_supported(con)) {
return -1;
}