tdesktop/Telegram/SourceFiles/ui/buttons/history_down_button.h
John Preston 958e47cc19 Received messages are not marked as read while scroll is at the top.
HistoryToEnd button is always shown if there are unread messages.
HistoryToEnd button displayes unread messages count.
New service message (HistoryCleared) is handled (not displayed at all).
2016-06-03 15:45:33 +03:00

54 lines
1.4 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
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.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
*/
#pragma once
#include "ui/button.h"
namespace Ui {
class HistoryDownButton : public Button {
Q_OBJECT
public:
HistoryDownButton(QWidget *parent);
void setUnreadCount(int unreadCount);
int unreadCount() const {
return _unreadCount;
}
protected:
void paintEvent(QPaintEvent *e) override;
private slots:
void onStateChange(int oldState, ButtonStateChangeSource source);
private:
void step_arrowOver(float64 ms, bool timer);
anim::fvalue a_arrowOpacity;
Animation _a_arrowOver;
int _unreadCount = 0;
};
} // namespace Ui