int zbar_processor_set_visible (zbar_processor_t *proc,
int visible)
{
proc_enter(proc);
_zbar_mutex_unlock(&proc->mutex);
int rc = 0;
if(proc->window) {
if(proc->video)
rc = _zbar_processor_set_size(proc,
zbar_video_get_width(proc->video),
zbar_video_get_height(proc->video));
if(!rc)
rc = _zbar_processor_set_visible(proc, visible);
if(!rc)
proc->visible = (visible != 0);
}
else if(visible)
rc = err_capture(proc, SEV_ERROR, ZBAR_ERR_INVALID, __func__,
"processor display window not initialized");
_zbar_mutex_lock(&proc->mutex);
proc_leave(proc);
return(rc);
}
static inline int proc_open (zbar_processor_t *proc)
{
/* arbitrary default */
int width = 640, height = 480;
if(proc->video) {
width = zbar_video_get_width(proc->video);
height = zbar_video_get_height(proc->video);
}
return(_zbar_processor_open(proc, "zbar barcode reader", width, height));
}
static inline gboolean zbar_gtk_video_open (ZBarGtk *self,
const char *video_device)
{
ZBarGtkPrivate *zbar = ZBAR_GTK_PRIVATE(self->_private);
gboolean video_opened = FALSE;
gdk_threads_enter();
zbar->req_width = DEFAULT_WIDTH;
zbar->req_height = DEFAULT_HEIGHT;
gtk_widget_queue_resize(GTK_WIDGET(self));
zbar->video_opened = FALSE;
if(zbar->thread)
g_object_notify(G_OBJECT(self), "video-opened");
if(zbar->window) {
/* ensure old video doesn't have image ref
* (FIXME handle video destroyed w/images outstanding)
*/
zbar_window_draw(zbar->window, NULL);
gtk_widget_queue_draw(GTK_WIDGET(self));
}
gdk_threads_leave();
if(zbar->video) {
zbar_video_destroy(zbar->video);
zbar->video = NULL;
}
if(video_device && video_device[0] && zbar->thread) {
/* create video
* FIXME video should support re-open
*/
zbar->video = zbar_video_create();
g_assert(zbar->video);
if(zbar_video_open(zbar->video, video_device)) {
zbar_video_error_spew(zbar->video, 0);
zbar_video_destroy(zbar->video);
zbar->video = NULL;
/* FIXME error propagation */
return(FALSE);
}
/* negotiation accesses the window format list,
* so we hold the lock for this part
*/
gdk_threads_enter();
video_opened = !zbar_negotiate_format(zbar->video, zbar->window);
if(video_opened) {
zbar->req_width = zbar_video_get_width(zbar->video);
zbar->req_height = zbar_video_get_height(zbar->video);
}
gtk_widget_queue_resize(GTK_WIDGET(self));
zbar->video_opened = video_opened;
if(zbar->thread)
g_object_notify(G_OBJECT(self), "video-opened");
gdk_threads_leave();
}
return(video_opened);
}
