, _height (height)
, _need_render (false)
{
- boost::shared_ptr<Data> d0 (new Data (NULL, 0, 0, 0, _format)); _current = d0;
- boost::shared_ptr<Data> d1 (new Data (NULL, 0, 0, 0, _format)); _pending = d1;
DataReady.connect (data_connections, MISSING_INVALIDATOR, boost::bind (&Image::accept_data, this), gui_context());
}
_pending->stride);
_current = _pending;
}
+
+ Rect self = item_to_window (Rect (0, 0, _width, _height));
+ boost::optional<Rect> draw = self.intersection (area);
- if (_surface) {
- context->set_source (_surface, 0, 0);
- context->rectangle (area.x0, area.y0, area.width(), area.height());
+ if (_surface && draw) {
+ context->set_source (_surface, self.x0, self.y0);
+ context->rectangle (draw->x0, draw->y0, draw->width(), draw->height());
context->fill ();
}
}