tdesktop/Telegram/SourceFiles/history/history_inner_widget.h

398 lines
12 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include "base/timer.h"
#include "ui/rp_widget.h"
#include "ui/effects/animations.h"
#include "ui/widgets/tooltip.h"
#include "ui/widgets/scroll_area.h"
#include "history/view/history_view_top_bar_widget.h"
namespace Data {
struct Group;
class CloudImageView;
} // namespace Data
namespace HistoryView {
class ElementDelegate;
struct TextState;
struct StateRequest;
enum class CursorState : char;
enum class PointState : char;
class EmptyPainter;
class Element;
} // namespace HistoryView
namespace Window {
class SessionController;
} // namespace Window
namespace Ui {
class PopupMenu;
} // namespace Ui
class HistoryWidget;
class HistoryInner
: public Ui::RpWidget
, public Ui::AbstractTooltipShower
, private base::Subscriber {
// The Q_OBJECT meta info is used for qobject_cast!
Q_OBJECT
public:
using Element = HistoryView::Element;
HistoryInner(
not_null<HistoryWidget*> historyWidget,
not_null<Ui::ScrollArea*> scroll,
not_null<Window::SessionController*> controller,
not_null<History*> history);
Main::Session &session() const;
void messagesReceived(PeerData *peer, const QVector<MTPMessage> &messages);
void messagesReceivedDown(PeerData *peer, const QVector<MTPMessage> &messages);
TextForMimeData getSelectedText() const;
void touchScrollUpdated(const QPoint &screenPos);
void checkHistoryActivation();
void recountHistoryGeometry();
void updateSize();
void repaintItem(const HistoryItem *item);
void repaintItem(const Element *view);
bool canCopySelected() const;
bool canDeleteSelected() const;
HistoryView::TopBarWidget::SelectedState getSelectionState() const;
void clearSelected(bool onlyTextSelection = false);
MessageIdsList getSelectedItems() const;
void selectItem(not_null<HistoryItem*> item);
bool inSelectionMode() const;
bool elementIntersectsRange(
not_null<const Element*> view,
int from,
int till) const;
void elementStartStickerLoop(not_null<const Element*> view);
void elementShowPollResults(
not_null<PollData*> poll,
FullMsgId context);
void elementShowTooltip(
const TextWithEntities &text,
Fn<void()> hiddenCallback);
void updateBotInfo(bool recount = true);
bool wasSelectedText() const;
void setFirstLoading(bool loading);
// updates history->scrollTopItem/scrollTopOffset
void visibleAreaUpdated(int top, int bottom);
int historyHeight() const;
int historyScrollTop() const;
int migratedTop() const;
int historyTop() const;
int historyDrawTop() const;
// -1 if should not be visible, -2 if bad history()
int itemTop(const HistoryItem *item) const;
int itemTop(const Element *view) const;
void notifyIsBotChanged();
void notifyMigrateUpdated();
// When inline keyboard has moved because of the edition of its item we want
// to move scroll position so that mouse points to the same button row.
int moveScrollFollowingInlineKeyboard(const HistoryItem *item, int oldKeyboardTop, int newKeyboardTop);
// Ui::AbstractTooltipShower interface.
QString tooltipText() const override;
QPoint tooltipPos() const override;
bool tooltipWindowActive() const override;
// HistoryView::ElementDelegate interface.
static not_null<HistoryView::ElementDelegate*> ElementDelegate();
~HistoryInner();
protected:
bool focusNextPrevChild(bool next) override;
bool eventHook(QEvent *e) override; // calls touchEvent when necessary
void touchEvent(QTouchEvent *e);
void paintEvent(QPaintEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void mouseReleaseEvent(QMouseEvent *e) override;
void mouseDoubleClickEvent(QMouseEvent *e) override;
void enterEventHook(QEvent *e) override;
void leaveEventHook(QEvent *e) override;
void resizeEvent(QResizeEvent *e) override;
void keyPressEvent(QKeyEvent *e) override;
void contextMenuEvent(QContextMenuEvent *e) override;
public slots:
void onParentGeometryChanged();
void onTouchSelect();
void onTouchScrollTimer();
private:
class BotAbout;
using SelectedItems = std::map<HistoryItem*, TextSelection, std::less<>>;
enum class MouseAction {
None,
PrepareDrag,
Dragging,
PrepareSelect,
Selecting,
};
enum class SelectAction {
Select,
Deselect,
Invert,
};
enum class EnumItemsDirection {
TopToBottom,
BottomToTop,
};
using CursorState = HistoryView::CursorState;
using PointState = HistoryView::PointState;
using TextState = HistoryView::TextState;
using StateRequest = HistoryView::StateRequest;
// This function finds all history items that are displayed and calls template method
// for each found message (in given direction) in the passed history with passed top offset.
//
// Method has "bool (*Method)(not_null<Element*> view, int itemtop, int itembottom)" signature
// if it returns false the enumeration stops immidiately.
template <bool TopToBottom, typename Method>
void enumerateItemsInHistory(History *history, int historytop, Method method);
template <EnumItemsDirection direction, typename Method>
void enumerateItems(Method method) {
constexpr auto TopToBottom = (direction == EnumItemsDirection::TopToBottom);
if (TopToBottom && _migrated) {
enumerateItemsInHistory<TopToBottom>(_migrated, migratedTop(), method);
}
enumerateItemsInHistory<TopToBottom>(_history, historyTop(), method);
if (!TopToBottom && _migrated) {
enumerateItemsInHistory<TopToBottom>(_migrated, migratedTop(), method);
}
}
// This function finds all userpics on the left that are displayed and calls template method
// for each found userpic (from the top to the bottom) using enumerateItems() method.
//
// Method has "bool (*Method)(not_null<Element*> view, int userpicTop)" signature
// if it returns false the enumeration stops immidiately.
template <typename Method>
void enumerateUserpics(Method method);
// This function finds all date elements that are displayed and calls template method
// for each found date element (from the bottom to the top) using enumerateItems() method.
//
// Method has "bool (*Method)(not_null<Element*> view, int itemtop, int dateTop)" signature
// if it returns false the enumeration stops immidiately.
template <typename Method>
void enumerateDates(Method method);
ClickHandlerPtr hiddenUserpicLink(FullMsgId id);
void scrollDateCheck();
void scrollDateHideByTimer();
bool canHaveFromUserpics() const;
void mouseActionStart(const QPoint &screenPos, Qt::MouseButton button);
void mouseActionUpdate();
void mouseActionUpdate(const QPoint &screenPos);
void mouseActionFinish(const QPoint &screenPos, Qt::MouseButton button);
void mouseActionCancel();
std::unique_ptr<QMimeData> prepareDrag();
void performDrag();
void paintEmpty(Painter &p, int width, int height);
QPoint mapPointToItem(QPoint p, const Element *view) const;
QPoint mapPointToItem(QPoint p, const HistoryItem *item) const;
void showContextMenu(QContextMenuEvent *e, bool showFromTouch = false);
void cancelContextDownload(not_null<DocumentData*> document);
void openContextGif(FullMsgId itemId);
void saveContextGif(FullMsgId itemId);
void copyContextText(FullMsgId itemId);
void showContextInFolder(not_null<DocumentData*> document);
void savePhotoToFile(not_null<PhotoData*> photo);
void saveDocumentToFile(
FullMsgId contextId,
not_null<DocumentData*> document);
void copyContextImage(not_null<PhotoData*> photo);
void showStickerPackInfo(not_null<DocumentData*> document);
void itemRemoved(not_null<const HistoryItem*> item);
void viewRemoved(not_null<const Element*> view);
void refreshView(not_null<HistoryItem*> item);
void touchResetSpeed();
void touchUpdateSpeed();
void touchDeaccelerate(int32 elapsed);
void adjustCurrent(int32 y) const;
void adjustCurrent(int32 y, History *history) const;
Element *prevItem(Element *item);
Element *nextItem(Element *item);
void updateDragSelection(Element *dragSelFrom, Element *dragSelTo, bool dragSelecting);
TextSelection itemRenderSelection(
not_null<Element*> view,
int selfromy,
int seltoy) const;
TextSelection computeRenderSelection(
not_null<const SelectedItems*> selected,
not_null<Element*> view) const;
void toggleScrollDateShown();
void repaintScrollDateCallback();
bool displayScrollDate() const;
void scrollDateHide();
void keepScrollDateForNow();
void applyDragSelection();
void applyDragSelection(not_null<SelectedItems*> toItems) const;
void addSelectionRange(
not_null<SelectedItems*> toItems,
not_null<History*> history,
int fromblock,
int fromitem,
int toblock,
int toitem) const;
bool isSelected(
not_null<SelectedItems*> toItems,
not_null<HistoryItem*> item) const;
bool isSelectedGroup(
not_null<SelectedItems*> toItems,
not_null<const Data::Group*> group) const;
bool isSelectedAsGroup(
not_null<SelectedItems*> toItems,
not_null<HistoryItem*> item) const;
bool goodForSelection(
not_null<SelectedItems*> toItems,
not_null<HistoryItem*> item,
int &totalCount) const;
void addToSelection(
not_null<SelectedItems*> toItems,
not_null<HistoryItem*> item) const;
void removeFromSelection(
not_null<SelectedItems*> toItems,
not_null<HistoryItem*> item) const;
void changeSelection(
not_null<SelectedItems*> toItems,
not_null<HistoryItem*> item,
SelectAction action) const;
void changeSelectionAsGroup(
not_null<SelectedItems*> toItems,
not_null<HistoryItem*> item,
SelectAction action) const;
void forwardItem(FullMsgId itemId);
void forwardAsGroup(FullMsgId itemId);
void deleteItem(not_null<HistoryItem*> item);
void deleteItem(FullMsgId itemId);
void deleteAsGroup(FullMsgId itemId);
void reportItem(FullMsgId itemId);
void reportAsGroup(FullMsgId itemId);
void copySelectedText();
// Does any of the shown histories has this flag set.
bool hasPendingResizedItems() const;
static HistoryInner *Instance;
const not_null<HistoryWidget*> _widget;
const not_null<Ui::ScrollArea*> _scroll;
const not_null<Window::SessionController*> _controller;
const not_null<PeerData*> _peer;
const not_null<History*> _history;
History *_migrated = nullptr;
int _contentWidth = 0;
int _historyPaddingTop = 0;
// Save visible area coords for painting / pressing userpics.
int _visibleAreaTop = 0;
int _visibleAreaBottom = 0;
// With migrated history we perhaps do not need to display
// the first _history message date (just skip it by height).
int _historySkipHeight = 0;
std::unique_ptr<BotAbout> _botAbout;
std::unique_ptr<HistoryView::EmptyPainter> _emptyPainter;
mutable History *_curHistory = nullptr;
mutable int _curBlock = 0;
mutable int _curItem = 0;
bool _firstLoading = false;
style::cursor _cursor = style::cur_default;
SelectedItems _selected;
base::flat_set<not_null<const HistoryItem*>> _animatedStickersPlayed;
base::flat_map<
not_null<PeerData*>,
std::shared_ptr<Data::CloudImageView>> _userpics, _userpicsCache;
MouseAction _mouseAction = MouseAction::None;
TextSelectType _mouseSelectType = TextSelectType::Letters;
QPoint _dragStartPosition;
QPoint _mousePosition;
HistoryItem *_mouseActionItem = nullptr;
HistoryItem *_dragStateItem = nullptr;
CursorState _mouseCursorState = CursorState();
uint16 _mouseTextSymbol = 0;
bool _pressWasInactive = false;
QPoint _trippleClickPoint;
QTimer _trippleClickTimer;
Element *_dragSelFrom = nullptr;
Element *_dragSelTo = nullptr;
bool _dragSelecting = false;
bool _wasSelectedText = false; // was some text selected in current drag action
// scroll by touch support (at least Windows Surface tablets)
bool _touchScroll = false;
bool _touchSelect = false;
bool _touchInProgress = false;
QPoint _touchStart, _touchPrevPos, _touchPos;
QTimer _touchSelectTimer;
Ui::TouchScrollState _touchScrollState = Ui::TouchScrollState::Manual;
bool _touchPrevPosValid = false;
bool _touchWaitingAcceleration = false;
QPoint _touchSpeed;
crl::time _touchSpeedTime = 0;
crl::time _touchAccelerationTime = 0;
crl::time _touchTime = 0;
QTimer _touchScrollTimer;
base::unique_qptr<Ui::PopupMenu> _menu;
bool _scrollDateShown = false;
Ui::Animations::Simple _scrollDateOpacity;
SingleQueuedInvokation _scrollDateCheck;
base::Timer _scrollDateHideTimer;
Element *_scrollDateLastItem = nullptr;
int _scrollDateLastItemTop = 0;
ClickHandlerPtr _scrollDateLink;
};