403 lines
		
	
	
	
		
			11 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			403 lines
		
	
	
	
		
			11 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 "window/section_widget.h"
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#include "ui/widgets/tooltip.h"
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#include "ui/widgets/scroll_area.h"
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namespace Overview {
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namespace Layout {
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class AbstractItem;
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class ItemBase;
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class Date;
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} // namespace Layout
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} // namespace Overview
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namespace Ui {
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class AbstractButton;
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class PlainShadow;
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class PopupMenu;
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class IconButton;
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class FlatInput;
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class CrossButton;
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class DropdownMenu;
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} // namespace Ui
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namespace Notify {
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struct PeerUpdate;
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} // namespace Notify
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namespace Window {
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class Controller;
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class TopBarWidget;
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} // namespace Window
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class OverviewWidget;
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class OverviewInner : public TWidget, public Ui::AbstractTooltipShower, public RPCSender, private base::Subscriber {
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	Q_OBJECT
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public:
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	OverviewInner(OverviewWidget *overview, Ui::ScrollArea *scroll, PeerData *peer, MediaOverviewType type);
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	void activate();
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	void clear();
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	int32 itemTop(const FullMsgId &msgId) const;
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	bool preloadLocal();
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	void preloadMore();
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	void showContextMenu(QContextMenuEvent *e, bool showFromTouch = false);
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	void dragActionStart(const QPoint &screenPos, Qt::MouseButton button = Qt::LeftButton);
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	void dragActionUpdate(const QPoint &screenPos);
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	void dragActionFinish(const QPoint &screenPos, Qt::MouseButton button = Qt::LeftButton);
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	void dragActionCancel();
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	void touchScrollUpdated(const QPoint &screenPos);
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	QPoint mapMouseToItem(QPoint p, MsgId itemId, int32 itemIndex);
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	int32 resizeToWidth(int32 nwidth, int32 scrollTop, int32 minHeight, bool force = false); // returns new scroll top
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	void dropResizeIndex();
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	PeerData *peer() const;
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	PeerData *migratePeer() const;
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	MediaOverviewType type() const;
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	void switchType(MediaOverviewType type);
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	void setSelectMode(bool enabled);
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	void mediaOverviewUpdated();
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	void changingMsgId(HistoryItem *row, MsgId newId);
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	void repaintItem(const HistoryItem *msg);
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	void getSelectionState(int32 &selectedForForward, int32 &selectedForDelete) const;
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	void clearSelectedItems(bool onlyTextSelection = false);
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	void fillSelectedItems(SelectedItemSet &sel, bool forDelete = true);
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	// AbstractTooltipShower interface
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	QString tooltipText() const override;
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	QPoint tooltipPos() const override;
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	~OverviewInner();
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protected:
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	bool event(QEvent *e) override;
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	void touchEvent(QTouchEvent *e);
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	void paintEvent(QPaintEvent *e) override;
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	void mouseMoveEvent(QMouseEvent *e) override;
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	void mousePressEvent(QMouseEvent *e) override;
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	void mouseReleaseEvent(QMouseEvent *e) override;
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	void keyPressEvent(QKeyEvent *e) override;
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	void enterEventHook(QEvent *e) override;
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	void leaveEventHook(QEvent *e) override;
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	void resizeEvent(QResizeEvent *e) override;
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public slots:
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	void onUpdateSelected();
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	void copyContextUrl();
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	void cancelContextDownload();
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	void showContextInFolder();
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	void goToMessage();
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	void forwardMessage();
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	void selectMessage();
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	void onSearchUpdate();
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	void onCancel();
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	bool onCancelSearch();
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	void onMenuDestroy(QObject *obj);
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	void onTouchSelect();
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	void onTouchScrollTimer();
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	void onDragExec();
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	bool onSearchMessages(bool searchCache = false);
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	void onNeedSearchMessages();
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private:
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	void saveDocumentToFile(DocumentData *document);
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	void invalidateCache();
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	void itemRemoved(HistoryItem *item);
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	MsgId complexMsgId(const HistoryItem *item) const;
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	bool itemMigrated(MsgId msgId) const;
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	ChannelId itemChannel(MsgId msgId) const;
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	MsgId itemMsgId(MsgId msgId) const;
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	int32 migratedIndexSkip() const;
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	void fixItemIndex(int32 ¤t, MsgId msgId) const;
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	bool itemHasPoint(MsgId msgId, int32 index, int32 x, int32 y) const;
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	int32 itemHeight(MsgId msgId, int32 index) const;
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	void moveToNextItem(MsgId &msgId, int32 &index, MsgId upTo, int32 delta) const;
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	void updateDragSelection(MsgId dragSelFrom, int32 dragSelFromIndex, MsgId dragSelTo, int32 dragSelToIndex, bool dragSelecting);
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	void repaintItem(MsgId itemId, int32 itemIndex);
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	void touchResetSpeed();
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	void touchUpdateSpeed();
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	void touchDeaccelerate(int32 elapsed);
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	void applyDragSelection();
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	void addSelectionRange(int32 selFrom, int32 selTo, History *history);
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	void recountMargins();
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	int32 countHeight();
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	OverviewWidget *_overview;
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	Ui::ScrollArea *_scroll;
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	int _resizeIndex = -1;
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	int _resizeSkip = 0;
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	PeerData *_peer;
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	MediaOverviewType _type;
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	bool _reversed;
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	History *_migrated, *_history;
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	ChannelId _channel;
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	bool _selMode = false;
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	TextSelection itemSelectedValue(int32 index) const;
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	int _rowsLeft = 0;
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	int _rowWidth = 0;
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	typedef QVector<Overview::Layout::AbstractItem*> Items;
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	Items _items;
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	typedef QMap<HistoryItem*, Overview::Layout::ItemBase*> LayoutItems;
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	LayoutItems _layoutItems;
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	typedef QMap<int32, Overview::Layout::Date*> LayoutDates;
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	LayoutDates _layoutDates;
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	Overview::Layout::ItemBase *layoutPrepare(HistoryItem *item);
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	Overview::Layout::AbstractItem *layoutPrepare(const QDate &date, bool month);
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	int32 setLayoutItem(int32 index, Overview::Layout::AbstractItem *item, int32 top);
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	object_ptr<Ui::FlatInput> _search;
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	object_ptr<Ui::CrossButton> _cancelSearch;
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	QVector<MsgId> _results;
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	int32 _itemsToBeLoaded;
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	// photos
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	int32 _photosInRow = 1;
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	QTimer _searchTimer;
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	QString _searchQuery;
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	bool _inSearch = false;
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	bool _searchFull = false;
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	bool _searchFullMigrated = false;
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	mtpRequestId _searchRequest = 0;
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	History::MediaOverview _searchResults;
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	MsgId _lastSearchId = 0;
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	MsgId _lastSearchMigratedId = 0;
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	int _searchedCount = 0;
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	enum SearchRequestType {
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		SearchFromStart,
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		SearchFromOffset,
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		SearchMigratedFromStart,
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		SearchMigratedFromOffset
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	};
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	void searchReceived(SearchRequestType type, const MTPmessages_Messages &result, mtpRequestId req);
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	bool searchFailed(SearchRequestType type, const RPCError &error, mtpRequestId req);
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	typedef QMap<QString, MTPmessages_Messages> SearchCache;
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	SearchCache _searchCache;
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	typedef QMap<mtpRequestId, QString> SearchQueries;
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	SearchQueries _searchQueries;
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	int _width = 0;
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	int _height = 0;
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	int _minHeight = 0;
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	int _marginTop = 0;
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	int _marginBottom = 0;
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	QTimer _linkTipTimer;
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	// selection support, like in HistoryWidget
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	style::cursor _cursor = style::cur_default;
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	HistoryCursorState _cursorState = HistoryDefaultCursorState;
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	using SelectedItems = QMap<MsgId, TextSelection>;
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	SelectedItems _selected;
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	enum DragAction {
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		NoDrag = 0x00,
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		PrepareDrag = 0x01,
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		Dragging = 0x02,
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		PrepareSelect = 0x03,
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		Selecting = 0x04,
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	};
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	DragAction _dragAction = NoDrag;
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	QPoint _dragStartPos, _dragPos;
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	MsgId _dragItem = 0;
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	MsgId _selectedMsgId = 0;
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	int _dragItemIndex = -1;
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	MsgId _mousedItem = 0;
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	int _mousedItemIndex = -1;
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	uint16 _dragSymbol;
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	bool _dragWasInactive = false;
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	ClickHandlerPtr _contextMenuLnk;
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	MsgId _dragSelFrom = 0;
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	MsgId _dragSelTo = 0;
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	int _dragSelFromIndex = -1;
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	int _dragSelToIndex = -1;
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	bool _dragSelecting = false;
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	bool _touchScroll = false;
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	bool _touchSelect = false;
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	bool _touchInProgress = false;
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	QPoint _touchStart, _touchPrevPos, _touchPos;
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	QTimer _touchSelectTimer;
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	Ui::TouchScrollState _touchScrollState = Ui::TouchScrollState::Manual;
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	bool _touchPrevPosValid = false;
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	bool _touchWaitingAcceleration = false;
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	QPoint _touchSpeed;
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	TimeMs _touchSpeedTime = 0;
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	TimeMs _touchAccelerationTime = 0;
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	TimeMs _touchTime = 0;
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	QTimer _touchScrollTimer;
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	Ui::PopupMenu *_menu = nullptr;
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};
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class OverviewWidget : public TWidget, public RPCSender {
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	Q_OBJECT
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public:
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	OverviewWidget(QWidget *parent, gsl::not_null<Window::Controller*> controller, PeerData *peer, MediaOverviewType type);
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	void clear();
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	void scrollBy(int32 add);
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	void scrollReset();
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	bool paintTopBar(Painter &p, int decreaseWidth);
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	PeerData *peer() const;
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	PeerData *migratePeer() const;
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	MediaOverviewType type() const;
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	void switchType(MediaOverviewType type);
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	bool showMediaTypeSwitch() const;
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	void updateTopBarSelection();
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	bool contentOverlapped(const QRect &globalRect);
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	int32 lastWidth() const;
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	int32 lastScrollTop() const;
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	int32 countBestScroll() const;
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	void fastShow(bool back = false, int32 lastScrollTop = -1);
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	bool hasTopBarShadow() const {
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		return true;
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	}
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	void setLastScrollTop(int lastScrollTop);
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	void showAnimated(Window::SlideDirection direction, const Window::SectionSlideParams ¶ms);
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	void doneShow();
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	void mediaOverviewUpdated(const Notify::PeerUpdate &update);
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	void changingMsgId(HistoryItem *row, MsgId newId);
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	void itemRemoved(HistoryItem *item);
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	QPoint clampMousePosition(QPoint point);
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	void checkSelectingScroll(QPoint point);
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	void noSelectingScroll();
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	bool touchScroll(const QPoint &delta);
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	void fillSelectedItems(SelectedItemSet &sel, bool forDelete);
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	void updateAfterDrag();
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	void grabStart() override {
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		_inGrab = true;
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		resizeEvent(0);
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	}
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	void grapWithoutTopBarShadow();
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	void grabFinish() override;
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	void rpcClear() override {
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		_inner->rpcClear();
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		RPCSender::rpcClear();
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	}
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	void confirmDeleteContextItem();
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	void confirmDeleteSelectedItems();
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	void deleteContextItem(bool forEveryone);
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	void deleteSelectedItems(bool forEveryone);
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	void ui_repaintHistoryItem(const HistoryItem *item);
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	void notify_historyItemLayoutChanged(const HistoryItem *item);
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	~OverviewWidget();
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protected:
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	void resizeEvent(QResizeEvent *e) override;
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	void paintEvent(QPaintEvent *e) override;
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	void contextMenuEvent(QContextMenuEvent *e) override;
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public slots:
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	void activate();
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	void onScroll();
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	void onScrollTimer();
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	void onForwardSelected();
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	void onClearSelected();
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private:
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	void topBarClick();
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	void animationCallback();
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	gsl::not_null<Window::Controller*> _controller;
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	object_ptr<Ui::AbstractButton> _backAnimationButton = { nullptr };
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	object_ptr<Window::TopBarWidget> _topBar;
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	object_ptr<Ui::ScrollArea> _scroll;
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	QPointer<OverviewInner> _inner;
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	bool _noDropResizeIndex = false;
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	object_ptr<Ui::DropdownMenu> _mediaType;
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	int32 _mediaTypeMask = 0;
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	QString _header;
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	Animation _a_show;
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	Window::SlideDirection _showDirection;
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	QPixmap _cacheUnder, _cacheOver;
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	int32 _scrollSetAfterShow = 0;
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	QTimer _scrollTimer;
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	int32 _scrollDelta = 0;
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	int32 _selCount = 0;
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	object_ptr<Ui::PlainShadow> _topShadow;
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	bool _inGrab = false;
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};
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