mirror of
https://github.com/Chatterino/chatterino2.git
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108 lines
3 KiB
C++
108 lines
3 KiB
C++
#pragma once
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#include "messages/LimitedQueue.hpp"
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#include "widgets/BaseWidget.hpp"
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#include "widgets/helper/ScrollbarHighlight.hpp"
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#include <pajlada/signals/signal.hpp>
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#include <QMutex>
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#include <QPropertyAnimation>
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#include <QWidget>
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namespace chatterino {
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class ChannelView;
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class Scrollbar : public BaseWidget
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{
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Q_OBJECT
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public:
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Scrollbar(size_t messagesLimit, ChannelView *parent = nullptr);
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void addHighlight(ScrollbarHighlight highlight);
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void addHighlightsAtStart(
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const std::vector<ScrollbarHighlight> &highlights_);
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void replaceHighlight(size_t index, ScrollbarHighlight replacement);
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void pauseHighlights();
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void unpauseHighlights();
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void clearHighlights();
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void scrollToBottom(bool animate = false);
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void scrollToTop(bool animate = false);
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bool isAtBottom() const;
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void setMaximum(qreal value);
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void offsetMaximum(qreal value);
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void resetMaximum();
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void setMinimum(qreal value);
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void offsetMinimum(qreal value);
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void setLargeChange(qreal value);
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void setSmallChange(qreal value);
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void setDesiredValue(qreal value, bool animated = false);
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qreal getMaximum() const;
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qreal getMinimum() const;
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qreal getLargeChange() const;
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qreal getBottom() const;
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qreal getSmallChange() const;
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qreal getDesiredValue() const;
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qreal getCurrentValue() const;
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qreal getRelativeCurrentValue() const;
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// offset the desired value without breaking smooth scolling
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void offset(qreal value);
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pajlada::Signals::NoArgSignal &getCurrentValueChanged();
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pajlada::Signals::NoArgSignal &getDesiredValueChanged();
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void setCurrentValue(qreal value);
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void printCurrentState(const QString &prefix = QString()) const;
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Q_PROPERTY(qreal desiredValue_ READ getDesiredValue WRITE setDesiredValue)
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protected:
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void paintEvent(QPaintEvent *) override;
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void resizeEvent(QResizeEvent *) override;
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void mouseMoveEvent(QMouseEvent *event) override;
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void mousePressEvent(QMouseEvent *event) override;
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void mouseReleaseEvent(QMouseEvent *event) override;
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void leaveEvent(QEvent *) override;
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private:
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Q_PROPERTY(qreal currentValue_ READ getCurrentValue WRITE setCurrentValue)
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LimitedQueueSnapshot<ScrollbarHighlight> &getHighlightSnapshot();
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void updateScroll();
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QMutex mutex_;
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QPropertyAnimation currentValueAnimation_;
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LimitedQueue<ScrollbarHighlight> highlights_;
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bool highlightsPaused_{false};
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LimitedQueueSnapshot<ScrollbarHighlight> highlightSnapshot_;
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bool atBottom_{false};
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int mouseOverIndex_ = -1;
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int mouseDownIndex_ = -1;
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QPoint lastMousePosition_;
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int buttonHeight_ = 0;
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int trackHeight_ = 100;
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QRect thumbRect_;
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qreal maximum_ = 0;
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qreal minimum_ = 0;
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qreal largeChange_ = 0;
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qreal smallChange_ = 5;
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qreal desiredValue_ = 0;
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qreal currentValue_ = 0;
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pajlada::Signals::NoArgSignal currentValueChanged_;
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pajlada::Signals::NoArgSignal desiredValueChanged_;
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};
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} // namespace chatterino
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