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Code Issues Releases Wiki Activity

Floating dates that appear animated when scrolling messages added.

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This commit is contained in:
John Preston
2016-06-10 13:21:09 +03:00
parent 6da62f902b
commit 16429b3008
7 changed files with 303 additions and 85 deletions
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46
Telegram/SourceFiles/historywidget.h
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@@ -138,6 +138,11 @@ public slots:
void onTouchScrollTimer();
void onDragExec();
private slots:
void onScrollDateCheck();
void onScrollDateHide();
private:
void touchResetSpeed();
@@ -152,6 +157,9 @@ private:
void setToClipboard(const TextWithEntities &forClipboard);
void toggleScrollDateShown();
void repaintScrollDateCallback();
PeerData *_peer = nullptr;
History *_migrated = nullptr;
History *_history = nullptr;
@@ -249,19 +257,45 @@ private:
int _visibleAreaTop = 0;
int _visibleAreaBottom = 0;
bool _scrollDateShown = false;
FloatAnimation _scrollDateOpacity;
SingleDelayedCall _scrollDateCheck = { this, "onScrollDateCheck" };
SingleTimer _scrollDateHideTimer;
HistoryItem *_scrollDateLastItem = nullptr;
int _scrollDateLastItemTop = 0;
// this function finds all history items that are displayed and calls template method
// for each found message (from the bottom to the top) in the passed history with passed top offset
//
// method has "bool (*Method)(HistoryItem *item, int itemtop, int itembottom)" signature
// if it returns false the enumeration stops immidiately
template <typename Method>
void enumerateItemsInHistory(History *history, int historytop, Method method);
template <typename Method, typename SwitchToMigratedCallback>
void enumerateItems(Method method, SwitchToMigratedCallback switchToMigrated) {
enumerateItemsInHistory(_history, historyTop(), method);
if (_migrated) {
switchToMigrated();
enumerateItemsInHistory(_migrated, migratedTop(), method);
}
}
// this function finds all userpics on the left that are displayed and calls template method
// for each found userpic (from the bottom to the top) in the passed history with passed top offset
// for each found userpic (from the bottom to the top) using enumerateItems() method
//
// method has "bool (*Method)(HistoryMessage *message, int userpicTop)" signature
// if it returns false the enumeration stops immidiately
template <typename Method>
void enumerateUserpicsInHistory(History *h, int htop, Method 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)(HistoryItem *item, int itemtop, int dateTop)" signature
// if it returns false the enumeration stops immidiately
template <typename Method>
void enumerateUserpics(Method method) {
enumerateUserpicsInHistory(_history, historyTop(), method);
enumerateUserpicsInHistory(_migrated, migratedTop(), method);
}
void enumerateDates(Method method);
};