tdesktop/Telegram/SourceFiles/overviewwidget.h

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/*
This file is part of Telegram Desktop,
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
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014 John Preston, https://desktop.telegram.org
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*/
#pragma once
class OverviewWidget;
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class OverviewInner : public QWidget, public RPCSender {
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Q_OBJECT
public:
OverviewInner(OverviewWidget *overview, ScrollArea *scroll, const PeerData *peer, MediaOverviewType type);
void clear();
bool event(QEvent *e);
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void touchEvent(QTouchEvent *e);
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void paintEvent(QPaintEvent *e);
void mouseMoveEvent(QMouseEvent *e);
void mousePressEvent(QMouseEvent *e);
void mouseReleaseEvent(QMouseEvent *e);
void keyPressEvent(QKeyEvent *e);
void enterEvent(QEvent *e);
void leaveEvent(QEvent *e);
void resizeEvent(QResizeEvent *e);
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void showContextMenu(QContextMenuEvent *e, bool showFromTouch = false);
void dragActionStart(const QPoint &screenPos, Qt::MouseButton button = Qt::LeftButton);
void dragActionUpdate(const QPoint &screenPos);
void dragActionFinish(const QPoint &screenPos, Qt::MouseButton button = Qt::LeftButton);
void dragActionCancel();
void touchScrollUpdated(const QPoint &screenPos);
QPoint mapMouseToItem(QPoint p, MsgId itemId, int32 itemIndex);
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int32 resizeToWidth(int32 nwidth, int32 scrollTop, int32 minHeight); // returns new scroll top
void dropResizeIndex();
PeerData *peer() const;
MediaOverviewType type() const;
void switchType(MediaOverviewType type);
void setSelectMode(bool enabled);
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void mediaOverviewUpdated();
void changingMsgId(HistoryItem *row, MsgId newId);
void msgUpdated(const HistoryItem *msg);
void itemRemoved(HistoryItem *item);
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void itemResized(HistoryItem *item, bool scrollToIt);
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void getSelectionState(int32 &selectedForForward, int32 &selectedForDelete) const;
void clearSelectedItems(bool onlyTextSelection = false);
void fillSelectedItems(SelectedItemSet &sel, bool forDelete = true);
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~OverviewInner();
public slots:
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void onUpdateSelected();
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void openContextUrl();
void cancelContextDownload();
void showContextInFolder();
void saveContextFile();
void openContextFile();
void goToMessage();
void deleteMessage();
void forwardMessage();
void selectMessage();
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void onMenuDestroy(QObject *obj);
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void onTouchSelect();
void onTouchScrollTimer();
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private:
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void fixItemIndex(int32 &current, MsgId msgId) const;
bool itemHasPoint(MsgId msgId, int32 index, int32 x, int32 y) const;
int32 itemHeight(MsgId msgId, int32 index) const;
void moveToNextItem(MsgId &msgId, int32 &index, MsgId upTo, int32 delta) const;
void updateDragSelection(MsgId dragSelFrom, int32 dragSelFromIndex, MsgId dragSelTo, int32 dragSelToIndex, bool dragSelecting);
void updateMsg(HistoryItem *item);
void updateMsg(MsgId itemId, int32 itemIndex);
void touchResetSpeed();
void touchUpdateSpeed();
void touchDeaccelerate(int32 elapsed);
void applyDragSelection();
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QPixmap genPix(PhotoData *photo, int32 size);
void showAll();
OverviewWidget *_overview;
ScrollArea *_scroll;
int32 _resizeIndex, _resizeSkip;
PeerData *_peer;
MediaOverviewType _type;
History *_hist;
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// photos
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int32 _photosInRow, _photosToAdd, _vsize;
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typedef struct {
int32 vsize;
bool medium;
QPixmap pix;
} CachedSize;
typedef QMap<PhotoData*, CachedSize> CachedSizes;
CachedSizes _cached;
bool _selMode;
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// other
typedef struct _CachedItem {
_CachedItem() : msgid(0), y(0) {
}
_CachedItem(MsgId msgid, const QDate &date, int32 y) : msgid(msgid), date(date), y(y) {
}
MsgId msgid;
QDate date;
int32 y;
} CachedItem;
typedef QVector<CachedItem> CachedItems;
CachedItems _items;
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int32 _width, _height, _minHeight, _addToY;
// selection support, like in HistoryWidget
Qt::CursorShape _cursor;
typedef QMap<MsgId, uint32> SelectedItems;
SelectedItems _selected;
enum DragAction {
NoDrag = 0x00,
PrepareDrag = 0x01,
Dragging = 0x02,
PrepareSelect = 0x03,
Selecting = 0x04,
};
DragAction _dragAction;
QPoint _dragStartPos, _dragPos;
MsgId _dragItem;
int32 _dragItemIndex;
MsgId _mousedItem;
int32 _mousedItemIndex;
uint16 _dragSymbol;
bool _dragWasInactive;
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TextLinkPtr _contextMenuLnk;
MsgId _dragSelFrom, _dragSelTo;
int32 _dragSelFromIndex, _dragSelToIndex;
bool _dragSelecting;
bool _touchScroll, _touchSelect, _touchInProgress;
QPoint _touchStart, _touchPrevPos, _touchPos;
QTimer _touchSelectTimer;
TouchScrollState _touchScrollState;
bool _touchPrevPosValid, _touchWaitingAcceleration;
QPoint _touchSpeed;
uint64 _touchSpeedTime, _touchAccelerationTime, _touchTime;
QTimer _touchScrollTimer;
ContextMenu *_menu;
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};
class OverviewWidget : public QWidget, public RPCSender, public Animated {
Q_OBJECT
public:
OverviewWidget(QWidget *parent, const PeerData *peer, MediaOverviewType type);
void clear();
void resizeEvent(QResizeEvent *e);
void paintEvent(QPaintEvent *e);
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void contextMenuEvent(QContextMenuEvent *e);
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void scrollBy(int32 add);
void paintTopBar(QPainter &p, float64 over, int32 decreaseWidth);
void topBarClick();
PeerData *peer() const;
MediaOverviewType type() const;
void switchType(MediaOverviewType type);
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void updateTopBarSelection();
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int32 lastWidth() const;
int32 lastScrollTop() const;
void animShow(const QPixmap &oldAnimCache, const QPixmap &bgAnimTopBarCache, bool back = false, int32 lastScrollTop = -1);
bool animStep(float64 ms);
void mediaOverviewUpdated(PeerData *peer);
void changingMsgId(HistoryItem *row, MsgId newId);
void msgUpdated(PeerId peer, const HistoryItem *msg);
void itemRemoved(HistoryItem *item);
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void itemResized(HistoryItem *row, bool scrollToIt);
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QPoint clampMousePosition(QPoint point);
void checkSelectingScroll(QPoint point);
void noSelectingScroll();
bool touchScroll(const QPoint &delta);
void fillSelectedItems(SelectedItemSet &sel, bool forDelete);
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void updateScrollColors();
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~OverviewWidget();
public slots:
void activate();
void onScroll();
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void onScrollTimer();
void onForwardSelected();
void onDeleteSelected();
void onDeleteSelectedSure();
void onDeleteContextSure();
void onClearSelected();
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private:
ScrollArea _scroll;
OverviewInner _inner;
bool _noDropResizeIndex;
QString _header;
bool _showing;
QPixmap _animCache, _bgAnimCache, _animTopBarCache, _bgAnimTopBarCache;
anim::ivalue a_coord, a_bgCoord;
anim::fvalue a_alpha, a_bgAlpha;
int32 _scrollSetAfterShow;
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QTimer _scrollTimer;
int32 _scrollDelta;
int32 _selCount;
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};