101 lines
2.9 KiB
C++
101 lines
2.9 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) 2014-2016 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "ui/twidget.h"
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#include "window/window_slide_animation.h"
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namespace Window {
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class SectionMemento;
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struct SectionSlideParams {
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QPixmap oldContentCache;
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bool withTopBarShadow = false;
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};
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class SectionWidget : public TWidget, protected base::Subscriber {
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Q_OBJECT
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public:
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SectionWidget(QWidget *parent);
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virtual PeerData *peerForDialogs() const {
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return nullptr;
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}
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// When resizing the widget with top edge moved up or down and we
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// want to add this top movement to the scroll position, so inner
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// content will not move.
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void setGeometryWithTopMoved(const QRect &newGeometry, int topDelta);
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virtual bool hasTopBarShadow() const {
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return false;
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}
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void showAnimated(SlideDirection direction, const SectionSlideParams ¶ms);
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// This can be used to grab with or without top bar shadow.
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// This will be protected when animation preparation will be done inside.
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virtual QPixmap grabForShowAnimation(const SectionSlideParams ¶ms) {
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return myGrab(this);
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}
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// Attempt to show the required section inside the existing one.
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// For example if this section already shows exactly the required
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// memento it can simply return true - it is shown already.
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virtual bool showInternal(const SectionMemento *memento) = 0;
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// Create a memento of that section to store it in the history stack.
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virtual std_::unique_ptr<SectionMemento> createMemento() const = 0;
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virtual void setInnerFocus() {
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setFocus();
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}
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protected:
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void paintEvent(QPaintEvent *e) override;
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// Temp variable used in resizeEvent() implementation, that is passed
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// to setGeometryWithTopMoved() to adjust the scroll position with the resize.
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int topDelta() const {
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return _topDelta;
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}
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// Called after the hideChildren() call in showAnimated().
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virtual void showAnimatedHook() {
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}
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// Called after the showChildren() call in showFinished().
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virtual void showFinishedHook() {
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}
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private:
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void showFinished();
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std_::unique_ptr<SlideAnimation> _showAnimation;
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// Saving here topDelta in resizeWithTopMoved() to get it passed to resizeEvent().
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int _topDelta = 0;
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};
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} // namespace Window
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