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

126 lines
3.1 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) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once
#include "styles/style_widgets.h"
namespace Ui {
class RippleAnimation;
class DiscreteSlider : public TWidget {
public:
DiscreteSlider(QWidget *parent);
void addSection(const QString &label);
void setSections(const QStringList &labels);
int activeSection() const {
return _activeIndex;
}
void setActiveSection(int index);
void setActiveSectionFast(int index);
using SectionActivatedCallback = base::lambda<void()>;
void setSectionActivatedCallback(SectionActivatedCallback &&callback);
protected:
void timerEvent(QTimerEvent *e) override;
void mousePressEvent(QMouseEvent *e) override;
void mouseMoveEvent(QMouseEvent *e) override;
void mouseReleaseEvent(QMouseEvent *e) override;
int resizeGetHeight(int newWidth) override = 0;
struct Section {
Section(const QString &label, const style::font &font);
int left, width;
QString label;
int labelWidth;
QSharedPointer<RippleAnimation> ripple;
};
int getCurrentActiveLeft(TimeMs ms);
int getSectionsCount() const {
return _sections.size();
}
template <typename Lambda>
void enumerateSections(Lambda callback);
virtual void startRipple(int sectionIndex) {
}
void stopAnimation() {
_a_left.finish();
}
void setSelectOnPress(bool selectOnPress);
private:
void activateCallback();
virtual const style::font &getLabelFont() const = 0;
virtual int getAnimationDuration() const = 0;
int getIndexFromPosition(QPoint pos);
void setSelectedSection(int index);
QList<Section> _sections;
int _activeIndex = 0;
bool _selectOnPress = true;
SectionActivatedCallback _callback;
int _pressed = -1;
int _selected = 0;
Animation _a_left;
int _timerId = -1;
TimeMs _callbackAfterMs = 0;
};
class SettingsSlider : public DiscreteSlider {
public:
SettingsSlider(QWidget *parent, const style::SettingsSlider &st = st::defaultSettingsSlider);
protected:
void paintEvent(QPaintEvent *e) override;
int resizeGetHeight(int newWidth) override;
void startRipple(int sectionIndex) override;
private:
const style::font &getLabelFont() const override;
int getAnimationDuration() const override;
QImage prepareRippleMask(int sectionIndex, const Section &section);
void resizeSections(int newWidth);
const style::SettingsSlider &_st;
};
} // namespace Ui