libs/widgets/KoContextBarButton.h

0001 // vim: set tabstop=4 shiftwidth=4 noexpandtab:
0002 /* This file is part of the KDE project
0003 Copyright 2011 Aurélien Gâteau <agateau@kde.org>
0004 Copyright 2011 Paul Mendez <paulestebanms@gmail.com>
0005
0006    This library is free software; you can redistribute it and/or
0007    modify it under the terms of the GNU Library General Public
0008    License as published by the Free Software Foundation; either
0009    version 2 of the License, or (at your option) any later version.
0010
0011    This library is distributed in the hope that it will be useful,
0012    but WITHOUT ANY WARRANTY; without even the implied warranty of
0013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0014    Library General Public License for more details.
0015
0016    You should have received a copy of the GNU Library General Public License
0017    along with this library; see the file COPYING.LIB.  If not, write to
0018    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0019    Boston, MA 02110-1301, USA.
0020 */
0021 #ifndef KOCONTEXTBARBUTTON_H
0022 #define KOCONTEXTBARBUTTON_H
0023
0024 // Qt
0025 #include <QToolButton>
0026 #include <QTimeLine>
0027
0028 class QTimeLine;
0029 /**
0030  * A button with a special look, appears when hovering over thumbnails
0031  */
0032 class KoContextBarButton : public QToolButton {
0033     Q_OBJECT
0034 public:
0035     explicit KoContextBarButton(const QString &iconName, QWidget *parent = nullptr);
0036     ~KoContextBarButton() override = default;
0037
0038 public Q_SLOTS:
0039     void setFadingValue(int value);
0040
0041 protected:
0042     void paintEvent(QPaintEvent*) override;
0043     void enterEvent(QEvent *event) override;
0044     void leaveEvent(QEvent *event) override;
0045     void showEvent(QShowEvent *event) override;
0046     void hideEvent(QHideEvent *event) override;
0047
0048 private:
0049     /** Starts button fading animation */
0050     void startFading();
0051
0052     /** Stops button fading animation */
0053     void stopFading();
0054     bool m_isHovered;
0055     int m_fadingValue;
0056     QTimeLine *m_fadingTimeLine;
0057 };
0058
0059 #endif /* KOCONTEXTBARBUTTON_H */