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Telegram/SourceFiles/editor/editor_layer_widget.h

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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
+*/
+#pragma once
+
+#include "ui/layers/layer_widget.h"
+#include "ui/image/image.h"
+#include "editor/photo_editor_common.h"
+#include "base/unique_qptr.h"
+#include "base/timer.h"
+
+enum class ImageRoundRadius;
+
+namespace Window {
+class Controller;
+class SessionController;
+} // namespace Window
+
+namespace Editor {
+
+class LayerWidget final : public Ui::LayerWidget {
+public:
+	LayerWidget(
+		not_null<QWidget*> parent,
+		base::unique_qptr<Ui::RpWidget> content);
+
+	void parentResized() override;
+	bool closeByOutsideClick() const override;
+
+private:
+	bool eventHook(QEvent *e) override;
+	void keyPressEvent(QKeyEvent *e) override;
+	int resizeGetHeight(int newWidth) override;
+
+	void start();
+	void cacheBackground();
+	void checkBackgroundStale();
+	void checkCacheBackground();
+	[[nodiscard]] QImage renderBackground();
+	void backgroundReady(QImage background, bool night);
+	void startBackgroundFade();
+
+	const base::unique_qptr<Ui::RpWidget> _content;
+	QImage _backgroundBack;
+	QImage _background;
+	QImage _backgroundNext;
+	Ui::Animations::Simple _backgroundFade;
+	base::Timer _backgroundTimer;
+	crl::time _lastAreaChangeTime = 0;
+	bool _backgroundCaching = false;
+	bool _backgroundNight = false;
+
+};
+
+} // namespace Editor