Method init

Telegram/SourceFiles/settings/settings_scale_preview.cpp:269–305

}

void Preview::init() {
	const auto background = Window::Theme::Background();
	const auto &paper = background->paper();
	_theme.setBackground({
		.prepared = background->prepared(),
		.preparedForTiled = background->preparedForTiled(),
		.gradientForFill = background->gradientForFill(),
		.colorForFill = background->colorForFill(),
		.colors = paper.backgroundColors(),
		.patternOpacity = paper.patternOpacity(),
		.gradientRotation = paper.gradientRotation(),
		.isPattern = paper.isPattern(),
		.tile = background->tile(),
	});

	_widget.paintRequest(
	) | rpl::on_next([=](QRect clip) {
		auto p = Painter(&_widget);
		paint(p, clip);
	}, _widget.lifetime());

	style::PaletteChanged(
	) | rpl::on_next([=] {
		_bubbleCorners = {};
		_bubbleTail = {};
		_bubbleShadowBottomRight = {};
		update();
	}, _widget.lifetime());

	if (_window) {
		initAsWindow();
		updateToScale(style::kScaleMin);
		_minOuterSize = _outer.size();
		updateToScale(style::MaxScaleForRatio(_ratio));
		_maxOuterSize = _outer.size();
	}
}

int Preview::scaled(int value) const {
	return style::ConvertScale(value, _scale);