tg_windows5.12.6/Telegram/SourceFiles/editor/scene/scene_item_image.cpp

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.

For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "editor/scene/scene_item_image.h"

namespace Editor {

ItemImage::ItemImage(
	const QPixmap &&pixmap,
	ItemBase::Data data)
: ItemBase(std::move(data))
, _pixmap(std::move(pixmap)) {
	setAspectRatio(_pixmap.isNull()
		? 1.0
		: (_pixmap.height() / float64(_pixmap.width())));
}

void ItemImage::paint(
		QPainter *p,
		const QStyleOptionGraphicsItem *option,
		QWidget *w) {
	const auto rect = contentRect();
	const auto pixmapSize = QSizeF(_pixmap.size() / style::DevicePixelRatio())
		.scaled(rect.size(), Qt::KeepAspectRatio);
	const auto resultRect = QRectF(rect.topLeft(), pixmapSize).translated(
		(rect.width() - pixmapSize.width()) / 2.,
		(rect.height() - pixmapSize.height()) / 2.);
	p->drawPixmap(resultRect.toRect(), _pixmap);
	ItemBase::paint(p, option, w);
}

void ItemImage::performFlip() {
	_pixmap = _pixmap.transformed(QTransform().scale(-1, 1));
	update();
}

std::shared_ptr<ItemBase> ItemImage::duplicate(ItemBase::Data data) const {
	auto pixmap = _pixmap;
	return std::make_shared<ItemImage>(std::move(pixmap), std::move(data));
}

} // namespace Editor