tdesktop/Telegram/SourceFiles/ui/wrap/fade_wrap.h

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/*
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/wrap/wrap.h"
#include "ui/effects/fade_animation.h"
namespace Ui {
template <typename Widget = RpWidget>
class FadeWrapScaled;
template <typename Widget = RpWidget>
class FadeWrap;
template <>
class FadeWrap<RpWidget> : public Wrap<RpWidget> {
using Parent = Wrap<RpWidget>;
public:
FadeWrap(
QWidget *parent,
object_ptr<RpWidget> &&child,
float64 scale = 1.);
FadeWrap *setDuration(int duration);
FadeWrap *toggle(bool shown, anim::type animated);
FadeWrap *show(anim::type animated) {
return toggle(true, animated);
}
FadeWrap *hide(anim::type animated) {
return toggle(false, animated);
}
FadeWrap *finishAnimating();
FadeWrap *toggleOn(rpl::producer<bool> &&shown);
bool animating() const {
return _animation.animating();
}
bool toggled() const {
return _animation.visible();
}
auto toggledValue() const {
return _toggledChanged.events_starting_with(
_animation.visible());
}
protected:
void paintEvent(QPaintEvent *e) final override;
private:
rpl::event_stream<bool> _toggledChanged;
FadeAnimation _animation;
int _duration = 0;
};
template <typename Widget>
class FadeWrap : public Wrap<Widget, FadeWrap<RpWidget>> {
using Parent = Wrap<Widget, FadeWrap<RpWidget>>;
public:
FadeWrap(
QWidget *parent,
object_ptr<Widget> &&child,
float64 scale = 1.)
: Parent(parent, std::move(child), scale) {
}
FadeWrap *setDuration(int duration) {
return chain(Parent::setDuration(duration));
}
FadeWrap *toggle(bool shown, anim::type animated) {
return chain(Parent::toggle(shown, animated));
}
FadeWrap *show(anim::type animated) {
return chain(Parent::show(animated));
}
FadeWrap *hide(anim::type animated) {
return chain(Parent::hide(animated));
}
FadeWrap *finishAnimating() {
return chain(Parent::finishAnimating());
}
FadeWrap *toggleOn(rpl::producer<bool> &&shown) {
return chain(Parent::toggleOn(std::move(shown)));
}
private:
FadeWrap *chain(FadeWrap<RpWidget> *result) {
return static_cast<FadeWrap*>(result);
}
};
template <typename Widget>
class FadeWrapScaled : public FadeWrap<Widget> {
using Parent = FadeWrap<Widget>;
public:
FadeWrapScaled(QWidget *parent, object_ptr<Widget> &&child)
: Parent(parent, std::move(child), 0.) {
}
};
class PlainShadow;
class FadeShadow : public FadeWrap<PlainShadow> {
using Parent = FadeWrap<PlainShadow>;
public:
FadeShadow(QWidget *parent);
FadeShadow(QWidget *parent, style::color color);
};
} // namespace Ui