Method DrawWidgets

src/widget.cpp:784–809

* Paint all widgets of a window. */

 * Paint all widgets of a window.
 */
void Window::DrawWidgets() const
{
	this->nested_root->Draw(this);

	if (this->flags.Test(WindowFlag::WhiteBorder)) {
		DrawFrameRect(0, 0, this->width - 1, this->height - 1, COLOUR_WHITE, FrameFlag::BorderOnly);
	}

	if (this->flags.Test(WindowFlag::Highlighted)) {
		extern bool _window_highlight_colour;
		for (const auto &pair : this->widget_lookup) {
			const NWidgetBase *widget = pair.second;
			if (!widget->IsHighlighted()) continue;

			Rect outer = widget->GetCurrentRect();
			Rect inner = outer.Shrink(WidgetDimensions::scaled.bevel).Expand(1);

			PixelColour colour = _string_colourmap[_window_highlight_colour ? widget->GetHighlightColour() : TC_WHITE];

			GfxFillRect(outer.left,     outer.top,    inner.left,      inner.bottom, colour);
			GfxFillRect(inner.left + 1, outer.top,    inner.right - 1, inner.top,    colour);
			GfxFillRect(inner.right,    outer.top,    outer.right,     inner.bottom, colour);
			GfxFillRect(outer.left + 1, inner.bottom, outer.right - 1, outer.bottom, colour);
		}
	}
}

/**
 * Draw a sort button's up or down arrow symbol.