91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
/*
|
|
This file is part of Telegram Desktop,
|
|
the official desktop version of Telegram 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.
|
|
|
|
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/telegramdesktop/tdesktop/blob/master/LICENSE
|
|
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
|
|
*/
|
|
#pragma once
|
|
|
|
#include "ui/rp_widget.h"
|
|
|
|
namespace Ui {
|
|
|
|
class ResizeArea : public RpWidget {
|
|
public:
|
|
ResizeArea(QWidget *parent) : RpWidget(parent) {
|
|
setCursor(style::cur_sizehor);
|
|
}
|
|
|
|
rpl::producer<int> moveLeft() const {
|
|
return _moveLeft.events();
|
|
}
|
|
template <typename Callback>
|
|
void addMoveLeftCallback(Callback &&callback) {
|
|
moveLeft()
|
|
| rpl::start_with_next(
|
|
std::forward<Callback>(callback),
|
|
lifetime());
|
|
}
|
|
|
|
rpl::producer<> moveFinished() const {
|
|
return _moveFinished.events();
|
|
}
|
|
template <typename Callback>
|
|
void addMoveFinishedCallback(Callback &&callback) {
|
|
moveFinished()
|
|
| rpl::start_with_next(
|
|
std::forward<Callback>(callback),
|
|
lifetime());
|
|
}
|
|
|
|
~ResizeArea() {
|
|
moveFinish();
|
|
}
|
|
|
|
protected:
|
|
void mousePressEvent(QMouseEvent *e) override {
|
|
if (e->button() == Qt::LeftButton) {
|
|
_moving = true;
|
|
_moveStartLeft = e->pos().x();
|
|
}
|
|
}
|
|
void mouseReleaseEvent(QMouseEvent *e) override {
|
|
if (e->button() == Qt::LeftButton) {
|
|
moveFinish();
|
|
}
|
|
}
|
|
void mouseMoveEvent(QMouseEvent *e) override {
|
|
if (_moving) {
|
|
_moveLeft.fire(e->globalPos().x() - _moveStartLeft);
|
|
}
|
|
}
|
|
|
|
private:
|
|
void moveFinish() {
|
|
if (base::take(_moving)) {
|
|
_moveFinished.fire({});
|
|
}
|
|
}
|
|
|
|
rpl::event_stream<int> _moveLeft;
|
|
rpl::event_stream<> _moveFinished;
|
|
int _moveStartLeft = 0;
|
|
bool _moving = false;
|
|
|
|
};
|
|
|
|
} // namespace Ui
|