// This file is part of Desktop App Toolkit,
// a set of libraries for developing nice desktop applications.
//
// For license and copyright information please follow this link:
// https://github.com/desktop-app/legal/blob/master/LEGAL
//
#pragma once

#include "ui/rp_widget.h"
#include "base/object_ptr.h"

#include <QtCore/QRect>
#include <QtCore/QPoint>

namespace style {
struct WindowTitle;
} // namespace style

namespace Ui {

class IconButton;
class PlainShadow;

namespace Platform {

enum class HitTestResult {
	None = 0,
	Client,
	SysButton,
	Caption,
	Top,
	TopRight,
	Right,
	BottomRight,
	Bottom,
	BottomLeft,
	Left,
	TopLeft,
};

class TitleControls final {
public:
	TitleControls(
		not_null<RpWidget*> parent,
		const style::WindowTitle &st,
		Fn<void(bool maximized)> maximize = nullptr);

	void setStyle(const style::WindowTitle &st);
	[[nodiscard]] not_null<const style::WindowTitle*> st() const;
	[[nodiscard]] QRect geometry() const;
	void setResizeEnabled(bool enabled);
	void raise();

private:
	[[nodiscard]] not_null<RpWidget*> parent() const;
	[[nodiscard]] not_null<QWidget*> window() const;

	void init(Fn<void(bool maximized)> maximize);
	void updateControlsVisibility();
	void updateButtonsState();
	void updateControlsPosition();
	void handleWindowStateChanged(Qt::WindowState state = Qt::WindowNoState);

	not_null<const style::WindowTitle*> _st;

	object_ptr<Ui::IconButton> _minimize;
	object_ptr<Ui::IconButton> _maximizeRestore;
	object_ptr<Ui::IconButton> _close;

	bool _maximizedState = false;
	bool _activeState = false;
	bool _resizeEnabled = true;

};

class TitleWidget : public RpWidget {
public:
	explicit TitleWidget(not_null<RpWidget*> parent);

	void setText(const QString &text);
	void setStyle(const style::WindowTitle &st);
	[[nodiscard]] HitTestResult hitTest(QPoint point) const;
	void setResizeEnabled(bool enabled);

protected:
	void paintEvent(QPaintEvent *e) override;
	void resizeEvent(QResizeEvent *e) override;

private:
	TitleControls _controls;
	object_ptr<Ui::PlainShadow> _shadow;

};

} // namespace Platform
} // namespace Ui