134 lines
3.4 KiB
C++
134 lines
3.4 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 <rpl/event_stream.h>
|
|
#include <rpl/map.h>
|
|
#include <rpl/distinct_until_changed.h>
|
|
|
|
namespace Ui {
|
|
|
|
class RpWidget : public TWidget {
|
|
public:
|
|
RpWidget(QWidget *parent = nullptr) : TWidget(parent) {
|
|
setGeometry(0, 0, 0, 0);
|
|
}
|
|
|
|
rpl::producer<QRect> geometryValue() const {
|
|
auto &stream = eventStreams().geometry;
|
|
return stream.events_starting_with_copy(geometry());
|
|
}
|
|
rpl::producer<QSize> sizeValue() const {
|
|
return geometryValue()
|
|
| rpl::map([](QRect &&value) { return value.size(); })
|
|
| rpl::distinct_until_changed();
|
|
}
|
|
rpl::producer<int> heightValue() const {
|
|
return geometryValue()
|
|
| rpl::map([](QRect &&value) { return value.height(); })
|
|
| rpl::distinct_until_changed();
|
|
}
|
|
rpl::producer<int> widthValue() const {
|
|
return geometryValue()
|
|
| rpl::map([](QRect &&value) { return value.width(); })
|
|
| rpl::distinct_until_changed();
|
|
}
|
|
rpl::producer<QPoint> positionValue() const {
|
|
return geometryValue()
|
|
| rpl::map([](QRect &&value) { return value.topLeft(); })
|
|
| rpl::distinct_until_changed();
|
|
}
|
|
rpl::producer<int> leftValue() const {
|
|
return geometryValue()
|
|
| rpl::map([](QRect &&value) { return value.left(); })
|
|
| rpl::distinct_until_changed();
|
|
}
|
|
rpl::producer<int> topValue() const {
|
|
return geometryValue()
|
|
| rpl::map([](QRect &&value) { return value.top(); })
|
|
| rpl::distinct_until_changed();
|
|
}
|
|
virtual rpl::producer<int> desiredHeightValue() const {
|
|
return heightValue();
|
|
}
|
|
|
|
rpl::producer<QRect> paintRequest() const {
|
|
return eventStreams().paint.events();
|
|
}
|
|
|
|
rpl::producer<> alive() const {
|
|
return eventStreams().alive.events();
|
|
}
|
|
|
|
rpl::lifetime &lifetime() {
|
|
return _lifetime;
|
|
}
|
|
|
|
protected:
|
|
bool event(QEvent *event) override {
|
|
switch (event->type()) {
|
|
case QEvent::Move:
|
|
case QEvent::Resize:
|
|
if (auto streams = _eventStreams.get()) {
|
|
auto that = weak(this);
|
|
streams->geometry.fire_copy(geometry());
|
|
if (!that) {
|
|
return true;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case QEvent::Paint:
|
|
if (auto streams = _eventStreams.get()) {
|
|
auto that = weak(this);
|
|
streams->paint.fire_copy(
|
|
static_cast<QPaintEvent*>(event)->rect());
|
|
if (!that) {
|
|
return true;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return TWidget::event(event);
|
|
}
|
|
|
|
private:
|
|
struct EventStreams {
|
|
rpl::event_stream<QRect> geometry;
|
|
rpl::event_stream<QRect> paint;
|
|
rpl::event_stream<> alive;
|
|
};
|
|
|
|
EventStreams &eventStreams() const {
|
|
if (!_eventStreams) {
|
|
_eventStreams = std::make_unique<EventStreams>();
|
|
}
|
|
return *_eventStreams;
|
|
}
|
|
|
|
mutable std::unique_ptr<EventStreams> _eventStreams;
|
|
|
|
rpl::lifetime _lifetime;
|
|
|
|
};
|
|
|
|
} // namespace Ui
|