C++ (Cpp) canvas_item_draw примеры использования

Пример #1

Файл: toolpalette.c Проект: JosenChareles/os-virt-viewer

static gboolean
canvas_expose_event (GtkWidget      *widget,
                     GdkEventExpose *event)
{
  cairo_t *cr;
  GList *iter;
  GtkAllocation allocation;

  cr = gdk_cairo_create (gtk_widget_get_window (widget));
  gdk_cairo_region (cr, event->region);
  cairo_clip (cr);

  gtk_widget_get_allocation (widget, &allocation);
  cairo_set_source_rgb (cr, 1, 1, 1);
  cairo_rectangle (cr, 0, 0, allocation.width, allocation.height);
  cairo_fill (cr);

  for (iter = canvas_items; iter; iter = iter->next)
    canvas_item_draw (iter->data, cr, FALSE);

  if (drop_item)
    canvas_item_draw (drop_item, cr, TRUE);

  cairo_destroy (cr);

  return TRUE;
}

Пример #2

Файл: toolpalette.c Проект: Distrotech/gtk2

static gboolean
canvas_draw (GtkWidget *widget,
             cairo_t   *cr)
{
  GList *iter;

  cairo_set_source_rgb (cr, 1, 1, 1);
  cairo_paint (cr);

  for (iter = canvas_items; iter; iter = iter->next)
    canvas_item_draw (iter->data, cr, FALSE);

  if (drop_item)
    canvas_item_draw (drop_item, cr, TRUE);

  return TRUE;
}