159 lines
3.8 KiB
C++
159 lines
3.8 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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#include <rpl/variable.h>
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#include "ui/rp_widget.h"
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#include "info/info_wrap_widget.h"
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namespace Storage {
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enum class SharedMediaType : char;
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} // namespace Storage
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namespace Ui {
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class ScrollArea;
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struct ScrollToRequest;
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} // namespace Ui
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namespace Window {
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class Controller;
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} // namespace Window
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namespace Info {
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class ContentMemento;
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class ContentWidget : public Ui::RpWidget {
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public:
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ContentWidget(
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QWidget *parent,
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rpl::producer<Wrap> wrap,
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not_null<Window::Controller*> controller,
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not_null<PeerData*> peer);
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virtual bool showInternal(
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not_null<ContentMemento*> memento) = 0;
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virtual std::unique_ptr<ContentMemento> createMemento() = 0;
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virtual rpl::producer<Section> sectionRequest() const;
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virtual void setIsStackBottom(bool isStackBottom) {
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}
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virtual Section section() const = 0;
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not_null<PeerData*> peer() const {
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return _peer;
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}
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rpl::producer<int> desiredHeightValue() const override;
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rpl::producer<bool> desiredShadowVisibility() const;
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bool hasTopBarShadow() const;
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virtual void setInnerFocus() {
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_inner->setFocus();
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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(
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const QRect &newGeometry,
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int topDelta);
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// Float player interface.
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bool wheelEventFromFloatPlayer(QEvent *e);
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QRect rectForFloatPlayer() const;
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virtual rpl::producer<SelectedItems> selectedListValue() const;
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virtual void cancelSelection() {
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}
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protected:
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template <typename Widget>
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Widget *setInnerWidget(
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object_ptr<Widget> inner,
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int scrollTopSkip = 0) {
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return static_cast<Widget*>(
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doSetInnerWidget(std::move(inner), scrollTopSkip));
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}
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not_null<Window::Controller*> controller() const {
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return _controller;
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}
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void resizeEvent(QResizeEvent *e) override;
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void paintEvent(QPaintEvent *e) override;
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int scrollTopSave() const;
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void scrollTopRestore(int scrollTop);
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void scrollTo(const Ui::ScrollToRequest &request);
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private:
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RpWidget *doSetInnerWidget(
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object_ptr<RpWidget> inner,
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int scrollTopSkip);
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const not_null<Window::Controller*> _controller;
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const not_null<PeerData*> _peer;
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style::color _bg;
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int _scrollTopSkip = 0;
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object_ptr<Ui::ScrollArea> _scroll;
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Ui::RpWidget *_inner = nullptr;
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// Saving here topDelta in setGeometryWithTopMoved() to get it passed to resizeEvent().
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int _topDelta = 0;
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};
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class ContentMemento {
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public:
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ContentMemento(PeerId peerId) : _peerId(peerId) {
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}
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virtual object_ptr<ContentWidget> createWidget(
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QWidget *parent,
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rpl::producer<Wrap> wrap,
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not_null<Window::Controller*> controller,
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const QRect &geometry) = 0;
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virtual PeerId peerId() const {
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return _peerId;
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}
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virtual Section section() const = 0;
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virtual ~ContentMemento() = default;
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void setScrollTop(int scrollTop) {
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_scrollTop = scrollTop;
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}
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int scrollTop() const {
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return _scrollTop;
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}
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private:
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PeerId _peerId = 0;
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int _scrollTop = 0;
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};
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} // namespace Info
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