amuse/Editor/StatusBarWidget.hpp

#ifndef AMUSE_STATUSBAR_WIDGET_HPP
#define AMUSE_STATUSBAR_WIDGET_HPP

#include <QStatusBar>
#include <QLabel>
#include <QPushButton>
#include <QSlider>
#include <QMouseEvent>
#include <cmath>

class StatusBarFocus;

class FXButton : public QPushButton
{
    Q_OBJECT
public:
    explicit FXButton(QWidget* parent = Q_NULLPTR);
    void mouseReleaseEvent(QMouseEvent* event) { event->ignore(); }
    void mouseMoveEvent(QMouseEvent* event) { event->ignore(); }
    void focusOutEvent(QFocusEvent* event) { event->ignore(); }
    void keyPressEvent(QKeyEvent* event) { event->ignore(); }
};

class StatusBarWidget : public QStatusBar
{
    friend class StatusBarFocus;
    Q_OBJECT
    QLabel m_normalMessage;
    QPushButton m_killButton;
    FXButton m_fxButton;
    QIcon m_volumeIcons[4];
    QLabel m_volumeIcon;
    QSlider m_volumeSlider;
    int m_lastVolIdx = 0;
    QLabel m_voiceCount;
    int m_cachedVoiceCount = -1;
    StatusBarFocus* m_curFocus = nullptr;
    void setKillVisible(bool vis) { m_killButton.setVisible(vis); m_voiceCount.setVisible(vis); }
public:
    explicit StatusBarWidget(QWidget* parent = Q_NULLPTR);
    void setNormalMessage(const QString& message) { m_normalMessage.setText(message); }
    void setVoiceCount(int voices);
    void connectKillClicked(const QObject* receiver, const char* method)
    { connect(&m_killButton, SIGNAL(clicked(bool)), receiver, method); }
    void connectFXPressed(const QObject* receiver, const char* method)
    { connect(&m_fxButton, SIGNAL(pressed()), receiver, method); }
    void setFXDown(bool down) { m_fxButton.setDown(down); }
    void connectVolumeSlider(const QObject* receiver, const char* method)
    { connect(&m_volumeSlider, SIGNAL(valueChanged(int)), receiver, method); }
    void setVolumeValue(int vol) { m_volumeSlider.setValue(vol); }

private slots:
    void volumeChanged(int vol);
};

class StatusBarFocus : public QObject
{
Q_OBJECT
    QString m_message;
public:
    explicit StatusBarFocus(StatusBarWidget* statusWidget)
    : QObject(statusWidget) {}
    ~StatusBarFocus() { exit(); }
    void setMessage(const QString& message);
    void enter();
    void exit();
};

#endif //AMUSE_STATUSBAR_WIDGET_HPP