310 lines
10 KiB
C++
310 lines
10 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 "ui/widgets/tooltip.h"
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#include "ui/widgets/scroll_area.h"
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#include "window/top_bar_widget.h"
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namespace Window {
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class Controller;
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} // namespace Window
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namespace Ui {
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class PopupMenu;
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} // namespace Ui
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class HistoryWidget;
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class HistoryInner : public TWidget, public Ui::AbstractTooltipShower, private base::Subscriber {
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Q_OBJECT
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public:
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HistoryInner(HistoryWidget *historyWidget, gsl::not_null<Window::Controller*> controller, Ui::ScrollArea *scroll, History *history);
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void messagesReceived(PeerData *peer, const QVector<MTPMessage> &messages);
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void messagesReceivedDown(PeerData *peer, const QVector<MTPMessage> &messages);
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TextWithEntities getSelectedText() const;
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void touchScrollUpdated(const QPoint &screenPos);
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QPoint mapPointToItem(QPoint p, HistoryItem *item);
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void recountHeight();
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void updateSize();
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void repaintItem(const HistoryItem *item);
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bool canCopySelected() const;
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bool canDeleteSelected() const;
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Window::TopBarWidget::SelectedState getSelectionState() const;
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void clearSelectedItems(bool onlyTextSelection = false);
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SelectedItemSet getSelectedItems() const;
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void selectItem(HistoryItem *item);
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void updateBotInfo(bool recount = true);
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bool wasSelectedText() const;
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void setFirstLoading(bool loading);
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// updates history->scrollTopItem/scrollTopOffset
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void visibleAreaUpdated(int top, int bottom);
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int historyHeight() const;
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int historyScrollTop() const;
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int migratedTop() const;
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int historyTop() const;
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int historyDrawTop() const;
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int itemTop(const HistoryItem *item) const; // -1 if should not be visible, -2 if bad history()
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void notifyIsBotChanged();
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void notifyMigrateUpdated();
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// When inline keyboard has moved because of the edition of its item we want
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// to move scroll position so that mouse points to the same button row.
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int moveScrollFollowingInlineKeyboard(const HistoryItem *item, int oldKeyboardTop, int newKeyboardTop);
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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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~HistoryInner();
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protected:
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bool focusNextPrevChild(bool next) override;
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bool event(QEvent *e) override; // calls touchEvent when necessary
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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 mouseDoubleClickEvent(QMouseEvent *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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void keyPressEvent(QKeyEvent *e) override;
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void contextMenuEvent(QContextMenuEvent *e) override;
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public slots:
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void onUpdateSelected();
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void onParentGeometryChanged();
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void copyContextUrl();
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void cancelContextDownload();
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void showContextInFolder();
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void saveContextGif();
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void openContextGif();
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void copyContextText();
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void copySelectedText();
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void onMenuDestroy(QObject *obj);
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void onTouchSelect();
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void onTouchScrollTimer();
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private slots:
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void onScrollDateCheck();
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void onScrollDateHideByTimer();
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private:
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enum class MouseAction {
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None,
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PrepareDrag,
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Dragging,
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PrepareSelect,
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Selecting,
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};
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void mouseActionStart(const QPoint &screenPos, Qt::MouseButton button);
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void mouseActionUpdate(const QPoint &screenPos);
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void mouseActionFinish(const QPoint &screenPos, Qt::MouseButton button);
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void mouseActionCancel();
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void performDrag();
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void showContextMenu(QContextMenuEvent *e, bool showFromTouch = false);
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void itemRemoved(HistoryItem *item);
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void savePhotoToFile(PhotoData *photo);
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void saveDocumentToFile(DocumentData *document);
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void copyContextImage(PhotoData *photo);
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void showStickerPackInfo();
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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 adjustCurrent(int32 y) const;
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void adjustCurrent(int32 y, History *history) const;
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HistoryItem *prevItem(HistoryItem *item);
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HistoryItem *nextItem(HistoryItem *item);
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void updateDragSelection(HistoryItem *dragSelFrom, HistoryItem *dragSelTo, bool dragSelecting, bool force = false);
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void setToClipboard(const TextWithEntities &forClipboard, QClipboard::Mode mode = QClipboard::Clipboard);
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void toggleScrollDateShown();
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void repaintScrollDateCallback();
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bool displayScrollDate() const;
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void scrollDateHide();
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void keepScrollDateForNow();
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gsl::not_null<Window::Controller*> _controller;
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PeerData *_peer = nullptr;
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History *_migrated = nullptr;
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History *_history = nullptr;
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int _historyPaddingTop = 0;
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// with migrated history we perhaps do not need to display first _history message
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// (if last _migrated message and first _history message are both isGroupMigrate)
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// or at least we don't need to display first _history date (just skip it by height)
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int _historySkipHeight = 0;
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class BotAbout : public ClickHandlerHost {
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public:
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BotAbout(HistoryInner *parent, BotInfo *info) : info(info), _parent(parent) {
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}
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BotInfo *info = nullptr;
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int width = 0;
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int height = 0;
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QRect rect;
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// ClickHandlerHost interface
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void clickHandlerActiveChanged(const ClickHandlerPtr &p, bool active) override;
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void clickHandlerPressedChanged(const ClickHandlerPtr &p, bool pressed) override;
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private:
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HistoryInner *_parent;
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};
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std::unique_ptr<BotAbout> _botAbout;
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HistoryWidget *_widget = nullptr;
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Ui::ScrollArea *_scroll = nullptr;
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mutable History *_curHistory = nullptr;
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mutable int _curBlock = 0;
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mutable int _curItem = 0;
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bool _firstLoading = false;
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style::cursor _cursor = style::cur_default;
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using SelectedItems = QMap<HistoryItem*, TextSelection>;
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SelectedItems _selected;
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void applyDragSelection();
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void applyDragSelection(SelectedItems *toItems) const;
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void addSelectionRange(SelectedItems *toItems, int32 fromblock, int32 fromitem, int32 toblock, int32 toitem, History *h) const;
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// Does any of the shown histories has this flag set.
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bool hasPendingResizedItems() const {
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return (_history && _history->hasPendingResizedItems()) || (_migrated && _migrated->hasPendingResizedItems());
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}
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MouseAction _mouseAction = MouseAction::None;
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TextSelectType _mouseSelectType = TextSelectType::Letters;
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QPoint _dragStartPosition;
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QPoint _mousePosition;
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HistoryItem *_mouseActionItem = nullptr;
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HistoryCursorState _mouseCursorState = HistoryDefaultCursorState;
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uint16 _mouseTextSymbol = 0;
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bool _pressWasInactive = false;
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QPoint _trippleClickPoint;
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QTimer _trippleClickTimer;
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ClickHandlerPtr _contextMenuLink;
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HistoryItem *_dragSelFrom = nullptr;
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HistoryItem *_dragSelTo = nullptr;
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bool _dragSelecting = false;
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bool _wasSelectedText = false; // was some text selected in current drag action
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// scroll by touch support (at least Windows Surface tablets)
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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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// context menu
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Ui::PopupMenu *_menu = nullptr;
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// save visible area coords for painting / pressing userpics
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int _visibleAreaTop = 0;
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int _visibleAreaBottom = 0;
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bool _scrollDateShown = false;
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Animation _scrollDateOpacity;
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SingleQueuedInvokation _scrollDateCheck;
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SingleTimer _scrollDateHideTimer;
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HistoryItem *_scrollDateLastItem = nullptr;
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int _scrollDateLastItemTop = 0;
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ClickHandlerPtr _scrollDateLink;
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enum class EnumItemsDirection {
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TopToBottom,
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BottomToTop,
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};
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// This function finds all history items that are displayed and calls template method
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// for each found message (in given direction) in the passed history with passed top offset.
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//
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// Method has "bool (*Method)(gsl::not_null<HistoryItem*> item, int itemtop, int itembottom)" signature
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// if it returns false the enumeration stops immidiately.
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template <bool TopToBottom, typename Method>
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void enumerateItemsInHistory(History *history, int historytop, Method method);
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template <EnumItemsDirection direction, typename Method>
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void enumerateItems(Method method) {
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constexpr auto TopToBottom = (direction == EnumItemsDirection::TopToBottom);
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if (TopToBottom && _migrated) {
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enumerateItemsInHistory<TopToBottom>(_migrated, migratedTop(), method);
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}
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enumerateItemsInHistory<TopToBottom>(_history, historyTop(), method);
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if (!TopToBottom && _migrated) {
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enumerateItemsInHistory<TopToBottom>(_migrated, migratedTop(), method);
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}
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}
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// This function finds all userpics on the left that are displayed and calls template method
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// for each found userpic (from the top to the bottom) using enumerateItems() method.
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//
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// Method has "bool (*Method)(gsl::not_null<HistoryMessage*> message, int userpicTop)" signature
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// if it returns false the enumeration stops immidiately.
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template <typename Method>
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void enumerateUserpics(Method method);
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// This function finds all date elements that are displayed and calls template method
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// for each found date element (from the bottom to the top) using enumerateItems() method.
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//
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// Method has "bool (*Method)(gsl::not_null<HistoryItem*> item, int itemtop, int dateTop)" signature
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// if it returns false the enumeration stops immidiately.
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template <typename Method>
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void enumerateDates(Method method);
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};
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