kepka/Telegram/SourceFiles/history/history_drag_area.h

81 lines
2.2 KiB
C++

//
// This file is part of Kepka,
// an unofficial desktop version of Telegram messaging app,
// see https://github.com/procxx/kepka
//
// Kepka 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.
//
// In addition, as a special exception, the copyright holders give permission
// to link the code of portions of this program with the OpenSSL library.
//
// Full license: https://github.com/procxx/kepka/blob/master/LICENSE
// Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
// Copyright (c) 2017- Kepka Contributors, https://github.com/procxx
//
#pragma once
#include "ui/animation.h"
#include "ui/twidget.h"
#include <QMimeData>
class DragArea : public TWidget {
Q_OBJECT
public:
DragArea(QWidget *parent);
void setText(const QString &text, const QString &subtext);
void otherEnter();
void otherLeave();
bool overlaps(const QRect &globalRect);
void hideFast();
void setDroppedCallback(Fn<void(const QMimeData *data)> callback) {
_droppedCallback = std::move(callback);
}
protected:
void paintEvent(QPaintEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void dragEnterEvent(QDragEnterEvent *e) override;
void dragLeaveEvent(QDragLeaveEvent *e) override;
void dropEvent(QDropEvent *e) override;
void dragMoveEvent(QDragMoveEvent *e) override;
public slots:
void hideStart();
void hideFinish();
void showStart();
private:
void setIn(bool in);
void opacityAnimationCallback();
QRect innerRect() const {
return QRect(st::dragPadding.left(), st::dragPadding.top(),
width() - st::dragPadding.left() - st::dragPadding.right(),
height() - st::dragPadding.top() - st::dragPadding.bottom());
}
bool _hiding = false;
bool _in = false;
QPixmap _cache;
Fn<void(const QMimeData *data)> _droppedCallback;
Animation _a_opacity;
Animation _a_in;
QString _text, _subtext;
};