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Telegram/SourceFiles/editor/photo_editor_common.cpp

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+/*
+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/photo_editor_common.h"
+
+#include "editor/scene/scene.h"
+#include "ui/painter.h"
+
+namespace Editor {
+
+QImage ImageModified(QImage image, const PhotoModifications &mods) {
+	Expects(!image.isNull());
+
+	if (!mods) {
+		return image;
+	}
+	if (mods.paint) {
+		if (image.format() != QImage::Format_ARGB32_Premultiplied) {
+			image = image.convertToFormat(
+				QImage::Format_ARGB32_Premultiplied);
+		}
+
+		Painter p(&image);
+		PainterHighQualityEnabler hq(p);
+
+		mods.paint->render(&p, image.rect());
+	}
+	auto cropped = mods.crop.isValid()
+		? image.copy(mods.crop)
+		: image;
+	QTransform transform;
+	if (mods.flipped) {
+		transform.scale(-1, 1);
+	}
+	if (mods.angle) {
+		transform.rotate(mods.angle);
+	}
+	return cropped.transformed(transform);
+}
+
+bool PhotoModifications::empty() const {
+	return !angle && !flipped && !crop.isValid() && !paint;
+}
+
+PhotoModifications::operator bool() const {
+	return !empty();
+}
+
+PhotoModifications::~PhotoModifications() {
+	if (paint && (paint.use_count() == 1)) {
+		paint->deleteLater();
+	}
+}
+
+} // namespace Editor