/*
This file is part of Telegram Desktop,
an unofficial desktop messaging app, see https://telegram.org

Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://tdesktop.com
*/
#pragma once

#include "gui/twidget.h"
#include "gui/boxshadow.h"

class Dropdown : public TWidget, public Animated {
	Q_OBJECT

public:

	Dropdown(QWidget *parent);

	IconedButton *addButton(IconedButton *button);

	void resizeEvent(QResizeEvent *e);
	void paintEvent(QPaintEvent *e);

	void enterEvent(QEvent *e);
	void leaveEvent(QEvent *e);
	void otherEnter();
	void otherLeave();

	void fastHide();

	bool animStep(float64 ms);

	bool eventFilter(QObject *obj, QEvent *e);

public slots:

	void hideStart();
	void hideFinish();

	void showStart();

private:

	void adjustButtons();

	typedef QVector<IconedButton*> Buttons;
	Buttons _buttons;

	int32 _width, _height;
	bool _hiding;

	anim::fvalue a_opacity;

	QTimer _hideTimer;

	BoxShadow _shadow;

};

class DragArea : public TWidget, public Animated {
	Q_OBJECT

public:

	DragArea(QWidget *parent);

	void paintEvent(QPaintEvent *e);
	void mouseMoveEvent(QMouseEvent *e);
	void dragEnterEvent(QDragEnterEvent *e);
	void dragLeaveEvent(QDragLeaveEvent *e);
	void dropEvent(QDropEvent *e);
	void dragMoveEvent(QDragMoveEvent *e);

	void setText(const QString &text, const QString &subtext);

	void otherEnter();
	void otherLeave();

	void fastHide();

	bool animStep(float64 ms);

signals:

	void dropped(QDropEvent *e);

public slots:

	void hideStart();
	void hideFinish();

	void showStart();

private:

	bool _hiding, _in;

	anim::fvalue a_opacity;
	anim::cvalue a_color;

	BoxShadow _shadow;

	QString _text, _subtext;

};

class EmojiPanInner : public QWidget, public Animated {
	Q_OBJECT

public:

	EmojiPanInner(QWidget *parent = 0);

	void paintEvent(QPaintEvent *e);

	void mousePressEvent(QMouseEvent *e);
	void mouseReleaseEvent(QMouseEvent *e);
	void mouseMoveEvent(QMouseEvent *e);
	void leaveEvent(QEvent *e);

	bool animStep(float64 ms);

	void showEmojiPack(DBIEmojiTab packIndex);

public slots:

	void updateSelected();
	void onSaveConfig();

signals:

	void emojiSelected(EmojiPtr emoji);

private:

	typedef QMap<int32, uint64> EmojiAnimations; // index - showing, -index - hiding
	EmojiAnimations _emojiAnimations;

	QVector<EmojiPtr> _emojis;
	QVector<float64> _hovers;

	DBIEmojiTab _tab;
	int32 _selected, _pressedSel;
	QPoint _lastMousePos;

	QTimer _saveConfigTimer;

};

class EmojiPan : public TWidget, public Animated {
	Q_OBJECT

public:

	EmojiPan(QWidget *parent);

	void paintEvent(QPaintEvent *e);

	void enterEvent(QEvent *e);
	void leaveEvent(QEvent *e);
	void otherEnter();
	void otherLeave();

	void fastHide();

	bool animStep(float64 ms);

	bool eventFilter(QObject *obj, QEvent *e);

public slots:

	void hideStart();
	void hideFinish();

	void showStart();

	void onTabChange();

signals:

	void emojiSelected(EmojiPtr emoji);

private:

	void showAll();
	void hideAll();

	int32 _width, _height;
	bool _hiding;
	QPixmap _cache;

	anim::fvalue a_opacity;

	QTimer _hideTimer;

	BoxShadow _shadow;

	FlatRadiobutton _recent, _people, _nature, _objects, _places, _symbols;

	int32 _emojiPack;
	ScrollArea _scroll;
	EmojiPanInner _inner;

};