static void zbar_gtk_unrealize (GtkWidget *widget)
{
if(GTK_WIDGET_MAPPED(widget))
gtk_widget_unmap(widget);
ZBarGtk *self = ZBAR_GTK(widget);
if(!self->_private)
return;
ZBarGtkPrivate *zbar = ZBAR_GTK_PRIVATE(self->_private);
if(zbar->video_enabled) {
zbar->video_enabled = FALSE;
GValue *msg = zbar_gtk_new_value(G_TYPE_INT);
g_value_set_int(msg, 0);
g_async_queue_push(zbar->queue, msg);
}
zbar_window_attach(zbar->window, NULL, 0);
GTK_WIDGET_UNSET_FLAGS(widget, GTK_REALIZED);
gdk_window_set_user_data(widget->window, NULL);
gdk_window_destroy(widget->window);
widget->window = NULL;
}
static void zbar_gtk_realize (GtkWidget *widget)
{
ZBarGtk *self = ZBAR_GTK(widget);
if(!self->_private)
return;
ZBarGtkPrivate *zbar = ZBAR_GTK_PRIVATE(self->_private);
GTK_WIDGET_UNSET_FLAGS(widget, GTK_DOUBLE_BUFFERED);
GTK_WIDGET_SET_FLAGS(widget, GTK_REALIZED);
GdkWindowAttr attributes;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.event_mask = (gtk_widget_get_events(widget) |
GDK_EXPOSURE_MASK);
widget->window = gdk_window_new(gtk_widget_get_parent_window(widget),
&attributes,
GDK_WA_X | GDK_WA_Y);
gdk_window_set_user_data(widget->window, widget);
gdk_window_set_back_pixmap(widget->window, NULL, TRUE);
/* attach zbar_window to underlying X window */
if(zbar_window_attach(zbar->window,
gdk_x11_drawable_get_xdisplay(widget->window),
gdk_x11_drawable_get_xid(widget->window)))
zbar_window_error_spew(zbar->window, 0);
}
void zbar_window_destroy (zbar_window_t *w)
{
/* detach */
zbar_window_attach(w, NULL, 0);
err_cleanup(&w->err);
_zbar_mutex_destroy(&w->imglock);
free(w);
}
static LRESULT CALLBACK win_handle_event (HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam)
{
zbar_processor_t *proc =
(zbar_processor_t*)GetWindowLongPtr(hwnd, GWL_USERDATA);
/* initialized during window creation */
if(message == WM_NCCREATE) {
proc = ((LPCREATESTRUCT)lparam)->lpCreateParams;
assert(proc);
SetWindowLongPtr(hwnd, GWL_USERDATA, (LONG_PTR)proc);
proc->display = hwnd;
zbar_window_attach(proc->window, proc->display, proc->xwin);
}
else if(!proc)
return(DefWindowProc(hwnd, message, wparam, lparam));
switch(message) {
case WM_SIZE: {
RECT r;
GetClientRect(hwnd, &r);
zprintf(3, "WM_SIZE %ldx%ld\n", r.right, r.bottom);
assert(proc);
zbar_window_resize(proc->window, r.right, r.bottom);
InvalidateRect(hwnd, NULL, 0);
return(0);
}
case WM_PAINT: {
PAINTSTRUCT ps;
BeginPaint(hwnd, &ps);
if(zbar_window_redraw(proc->window)) {
HDC hdc = GetDC(hwnd);
RECT r;
GetClientRect(hwnd, &r);
FillRect(hdc, &r, GetStockObject(BLACK_BRUSH));
ReleaseDC(hwnd, hdc);
}
EndPaint(hwnd, &ps);
return(0);
}
case WM_CHAR: {
_zbar_processor_handle_input(proc, wparam);
return(0);
}
case WM_LBUTTONDOWN: {
_zbar_processor_handle_input(proc, 1);
return(0);
}
case WM_MBUTTONDOWN: {
_zbar_processor_handle_input(proc, 2);
return(0);
}
case WM_RBUTTONDOWN: {
_zbar_processor_handle_input(proc, 3);
return(0);
}
case WM_CLOSE: {
zprintf(3, "WM_CLOSE\n");
_zbar_processor_handle_input(proc, -1);
return(1);
}
case WM_DESTROY: {
zprintf(3, "WM_DESTROY\n");
proc->display = NULL;
zbar_window_attach(proc->window, NULL, 0);
return(0);
}
}
return(DefWindowProc(hwnd, message, wparam, lparam));
}