Method paint

src/ui/widget.cpp:984–1025

}

void Widget::paint(Graphics* graphics, const gfx::Region& drawRegion)
{
  if (drawRegion.isEmpty())
    return;

  std::queue<Widget*> processing;
  processing.push(this);

  while (!processing.empty()) {
    Widget* widget = processing.front();
    processing.pop();

    ASSERT_VALID_WIDGET(widget);

    // If the widget is hidden
    if (!widget->isVisible())
      continue;

    for (auto child : widget->children())
      processing.push(child);

    // Intersect drawRegion with widget's drawable region.
    Region region;
    widget->getDrawableRegion(region, kCutTopWindows);
    region.createIntersection(region, drawRegion);

    Graphics graphics2(
      graphics->getInternalSurface(),
      widget->bounds().x,
      widget->bounds().y);
    graphics2.setFont(widget->font());

    for (Region::const_iterator
           it = region.begin(),
           end = region.end(); it != end; ++it) {
      IntersectClip clip(&graphics2, Rect(*it).offset(
          -widget->bounds().x,
          -widget->bounds().y));
      widget->paintEvent(&graphics2);
    }
  }
}

bool Widget::paintEvent(Graphics* graphics)
{