tdesktop/Telegram/SourceFiles/ui/widgets/discrete_slider.h

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/*
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
namespace Ui {
class DiscreteSlider : public TWidget {
public:
DiscreteSlider(QWidget *parent);
void addSection(const QString &label);
int activeSection() const {
return _activeIndex;
}
void setActiveSection(int index);
void setActiveSectionFast(int index);
using SectionActivatedCallback = base::lambda_unique<void()>;
void setSectionActivatedCallback(SectionActivatedCallback &&callback);
protected:
void paintEvent(QPaintEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void mouseReleaseEvent(QMouseEvent *e) override;
int resizeGetHeight(int newWidth) override;
private:
void resizeSections(int newWidth);
int getIndexFromPosition(QPoint pos);
void setSelectedSection(int index);
void step_left(float64 ms, bool timer);
struct Section {
Section(const QString &label);
int left, width;
QString label;
int labelWidth;
};
QList<Section> _sections;
int _activeIndex = 0;
SectionActivatedCallback _callback;
bool _pressed = false;
int _selected = 0;
anim::ivalue a_left = { 0 };
Animation _a_left;
};
} // namespace Ui