158 lines
3.5 KiB
C++
158 lines
3.5 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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class TWidget;
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#include "styles/style_widgets.h"
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namespace Ui {
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class FadeAnimation {
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public:
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FadeAnimation(TWidget *widget);
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bool paint(Painter &p);
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void refreshCache();
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using FinishedCallback = base::lambda<void()>;
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void setFinishedCallback(FinishedCallback &&callback);
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using UpdatedCallback = base::lambda<void(float64)>;
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void setUpdatedCallback(UpdatedCallback &&callback);
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void show();
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void hide();
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void fadeIn(int duration);
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void fadeOut(int duration);
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void finish() {
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_animation.finish();
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}
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bool animating() const {
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return _animation.animating();
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}
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private:
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void startAnimation(int duration);
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void stopAnimation();
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void updateCallback();
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TWidget *_widget;
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Animation _animation;
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QPixmap _cache;
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bool _visible = false;
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FinishedCallback _finishedCallback;
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UpdatedCallback _updatedCallback;
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};
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template <typename Widget>
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class WidgetFadeWrap;
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template <>
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class WidgetFadeWrap<TWidget> : public TWidget {
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public:
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WidgetFadeWrap(QWidget *parent
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, object_ptr<TWidget> entity
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, int duration = st::widgetFadeDuration
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, base::lambda<void()> updateCallback = base::lambda<void()>());
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void showAnimated() {
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_animation.fadeIn(_duration);
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}
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void hideAnimated() {
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_animation.fadeOut(_duration);
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}
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void showFast() {
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_animation.show();
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if (_updateCallback) {
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_updateCallback();
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}
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}
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void hideFast() {
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_animation.hide();
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if (_updateCallback) {
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_updateCallback();
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}
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}
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void finishAnimation() {
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_animation.finish();
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}
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TWidget *entity() {
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return _entity;
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}
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const TWidget *entity() const {
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return _entity;
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}
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QMargins getMargins() const override {
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return _entity->getMargins();
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}
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int naturalWidth() const override {
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return _entity->naturalWidth();
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}
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bool animating() const {
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return _animation.animating();
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}
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protected:
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bool eventFilter(QObject *object, QEvent *event) override;
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void paintEvent(QPaintEvent *e) override;
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private:
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object_ptr<TWidget> _entity;
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int _duration;
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base::lambda<void()> _updateCallback;
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FadeAnimation _animation;
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};
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template <typename Widget>
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class WidgetFadeWrap : public WidgetFadeWrap<TWidget> {
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public:
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WidgetFadeWrap(QWidget *parent
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, object_ptr<Widget> entity
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, int duration = st::widgetFadeDuration
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, base::lambda<void()> updateCallback = base::lambda<void()>()) : WidgetFadeWrap<TWidget>(parent
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, std::move(entity)
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, duration
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, std::move(updateCallback)) {
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}
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Widget *entity() {
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return static_cast<Widget*>(WidgetFadeWrap<TWidget>::entity());
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}
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const Widget *entity() const {
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return static_cast<const Widget*>(WidgetFadeWrap<TWidget>::entity());
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}
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};
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} // namespace Ui
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