mirror-chatterino2/src/widgets/scrollbar.hpp
2018-05-26 17:12:00 +02:00

96 lines
2.5 KiB
C++

#pragma once
#include "messages/limitedqueue.hpp"
#include "singletons/settingsmanager.hpp"
#include "widgets/basewidget.hpp"
#include "widgets/helper/scrollbarhighlight.hpp"
#include <QMutex>
#include <QPropertyAnimation>
#include <QWidget>
#include <pajlada/signals/signal.hpp>
namespace chatterino {
namespace widgets {
class ChannelView;
class Scrollbar : public BaseWidget
{
Q_OBJECT
public:
Scrollbar(ChannelView *parent = nullptr);
void addHighlight(ScrollbarHighlight highlight);
void addHighlightsAtStart(const std::vector<ScrollbarHighlight> &highlights);
void replaceHighlight(size_t index, ScrollbarHighlight replacement);
void scrollToBottom(bool animate = false);
bool isAtBottom() const;
void setMaximum(qreal value);
void setMinimum(qreal value);
void setLargeChange(qreal value);
void setSmallChange(qreal value);
void setDesiredValue(qreal value, bool animated = false);
qreal getMaximum() const;
qreal getMinimum() const;
qreal getLargeChange() const;
qreal getSmallChange() const;
qreal getDesiredValue() const;
qreal getCurrentValue() const;
// offset the desired value without breaking smooth scolling
void offset(qreal value);
pajlada::Signals::NoArgSignal &getCurrentValueChanged();
void setCurrentValue(qreal value);
void printCurrentState(const QString &prefix = QString()) const;
Q_PROPERTY(qreal desiredValue READ getDesiredValue WRITE setDesiredValue)
protected:
void paintEvent(QPaintEvent *) override;
void resizeEvent(QResizeEvent *) override;
void mouseMoveEvent(QMouseEvent *event) override;
void mousePressEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
void leaveEvent(QEvent *) override;
private:
Q_PROPERTY(qreal currentValue READ getCurrentValue WRITE setCurrentValue)
QMutex mutex;
QPropertyAnimation currentValueAnimation;
messages::LimitedQueue<ScrollbarHighlight> highlights;
bool atBottom = false;
int mouseOverIndex = -1;
int mouseDownIndex = -1;
QPoint lastMousePosition;
int buttonHeight = 0;
int trackHeight = 100;
QRect thumbRect;
qreal maximum = 0;
qreal minimum = 0;
qreal largeChange = 0;
qreal smallChange = 5;
qreal desiredValue = 0;
qreal currentValue = 0;
qreal smoothScrollingOffset = 0;
pajlada::Signals::NoArgSignal currentValueChanged;
void updateScroll();
};
} // namespace widgets
} // namespace chatterino