matrixion/include/EmojiPanel.h

/*
 * nheko Copyright (C) 2017  Konstantinos Sideris <siderisk@auth.gr>
 *
 * This program 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.
 *
 * This program 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <QFrame>
#include <QGraphicsOpacityEffect>
#include <QParallelAnimationGroup>
#include <QPropertyAnimation>
#include <QScrollArea>
#include <QWidget>

#include "EmojiCategory.h"
#include "EmojiProvider.h"

class EmojiPanel : public QFrame
{
	Q_OBJECT

public:
	EmojiPanel(QWidget *parent = nullptr);

	void fadeOut();
	void fadeIn();

signals:
	void mouseLeft();
	void emojiSelected(const QString &emoji);

protected:
	void leaveEvent(QEvent *event);

private:
	void showEmojiCategory(const EmojiCategory *category);

	QPropertyAnimation *opacity_anim_;
	QPropertyAnimation *size_anim_;
	QGraphicsOpacityEffect *opacity_;
	QParallelAnimationGroup *animation_;

	EmojiProvider emoji_provider_;

	QScrollArea *scroll_area_;

	// Panel dimensions.
	const int WIDTH = 370;
	const int HEIGHT = 350;

	const int ANIMATION_DURATION = 100;
	const int ANIMATION_OFFSET = 50;

	const int category_icon_size_ = 20;
};