Method draw

src/tools/draw_rectangle_tool.cpp:429–491

}

void DrawRectangleTool::draw(QPainter* painter, MapWidget* widget)
{
	drawPreviewObjects(painter, widget);
	
	if (editingInProgress())
	{
		// Snap line
		if (snapped_to_line)
		{
			// Simple hack to make line extend over the whole screen in most cases
			const auto scale_factor = 100;
			MapCoord a = snapped_to_line_b + (snapped_to_line_a - snapped_to_line_b) * scale_factor;
			MapCoord b = snapped_to_line_b - (snapped_to_line_a - snapped_to_line_b) * scale_factor;
			
			painter->setPen(selection_color);
			painter->drawLine(widget->mapToViewport(a), widget->mapToViewport(b));
		}
		
		// Helper cross
		bool use_preview_radius = Settings::getInstance().getSettingCached(Settings::RectangleTool_PreviewLineWidth).toBool();
		const double preview_radius_min_pixels = 2.5;
		if (widget->getMapView()->lengthToPixel(preview_point_radius) < preview_radius_min_pixels)
			use_preview_radius = false;
		
		auto helper_cross_radius = Settings::getInstance().getRectangleToolHelperCrossRadiusPx();
		painter->setRenderHint(QPainter::Antialiasing);
		
		auto perp_vector = forward_vector.perpRight();
		
		painter->setPen((angles.size() > 1) ? inactive_color : active_color);
		if (preview_point_radius == 0 || !use_preview_radius)
		{
			painter->drawLine(widget->mapToViewport(cur_pos_map) + helper_cross_radius * forward_vector,
							  widget->mapToViewport(cur_pos_map) - helper_cross_radius * forward_vector);
		}
		else
		{
			painter->drawLine(widget->mapToViewport(cur_pos_map + preview_point_radius * perp_vector / 1000) + helper_cross_radius * forward_vector,
							  widget->mapToViewport(cur_pos_map + preview_point_radius * perp_vector / 1000) - helper_cross_radius * forward_vector);
			painter->drawLine(widget->mapToViewport(cur_pos_map - preview_point_radius * perp_vector / 1000) + helper_cross_radius * forward_vector,
							  widget->mapToViewport(cur_pos_map - preview_point_radius * perp_vector / 1000) - helper_cross_radius * forward_vector);
		}
		
		painter->setPen(active_color);
		if (preview_point_radius == 0 || !use_preview_radius)
		{
			painter->drawLine(widget->mapToViewport(cur_pos_map) + helper_cross_radius * perp_vector,
							  widget->mapToViewport(cur_pos_map) - helper_cross_radius * perp_vector);
		}
		else
		{
			painter->drawLine(widget->mapToViewport(cur_pos_map + preview_point_radius * forward_vector / 1000) + helper_cross_radius * perp_vector,
							  widget->mapToViewport(cur_pos_map + preview_point_radius * forward_vector / 1000) - helper_cross_radius * perp_vector);
			painter->drawLine(widget->mapToViewport(cur_pos_map - preview_point_radius * forward_vector / 1000) + helper_cross_radius * perp_vector,
							  widget->mapToViewport(cur_pos_map - preview_point_radius * forward_vector / 1000) - helper_cross_radius * perp_vector);
		}
	}