kis_color_label_button.h

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/*
 *  SPDX-FileCopyrightText: 2020 Eoin O 'Neill <eoinoneill1991@gmail.com>
 *  SPDX-FileCopyrightText: 2020 Emmet O 'Neill <emmetoneill.pdx@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
#ifndef KISCOLORLABELBUTTON_H
#define KISCOLORLABELBUTTON_H
 
#include <QButtonGroup>
#include <QAbstractButton>
#include <QSet>
 
#include "kritaui_export.h"
 
class KRITAUI_EXPORT KisColorLabelButton : public QAbstractButton
{
    Q_OBJECT
public:
    enum SelectionIndicationType {
        FillIn,
        Outline
    };
 
    KisColorLabelButton(QColor color, uint sizeSquared = 32, QWidget *parent = nullptr);
    ~KisColorLabelButton() override;
 
    void paintEvent(QPaintEvent* event) override;
#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
    void enterEvent(QEvent *event) override;
#else
    void enterEvent(QEnterEvent *event) override;
#endif
    void leaveEvent(QEvent *event) override;
    QSize sizeHint() const override;
    SelectionIndicationType selectionVisType() const;
    void setSelectionVisType( SelectionIndicationType type );
    void setSize(uint size);
 
    void nextCheckState() override;
 
private:
    struct Private;
    const QScopedPointer<Private> m_d;
};
 
 
class KRITAUI_EXPORT KisColorLabelFilterGroup : public QButtonGroup {
    Q_OBJECT
public:
    KisColorLabelFilterGroup(QObject* parent);
    ~KisColorLabelFilterGroup();
 
    QList<QAbstractButton*> viableButtons() const;
    void setViableLabels(const QSet<int> &buttons);
    void setViableLabels(const QList<int> &viableLabels);
    QSet<int> getActiveLabels() const;
 
    QList<QAbstractButton*> checkedViableButtons() const;
    int countCheckedViableButtons() const;
    int countViableButtons() const;
 
    void setMinimumRequiredChecked( int checkedBtns );
    int minimumRequiredChecked() const;
 
public Q_SLOTS:
    void reset();
    void setAllVisibility(const bool vis);
 
private:
    void disableAll();
    QSet<int> viableColorLabels;
    int minimumCheckedButtons;
 
};
 
class KRITAUI_EXPORT KisColorLabelMouseDragFilter : public QObject {
    enum State{
        Idle,
        WaitingForDragLeave, //Waiting for mouse to exit first clicked while the mouse button is down.
        WaitingForDragEnter //Waiting for mouse to slide across buttons within the same button group.
    };
 
    State currentState;
    QPoint lastKnownMousePosition;
 
public:
    KisColorLabelMouseDragFilter(QObject *parent = nullptr);
 
protected:
    bool eventFilter(QObject *obj, QEvent *event) override;
    void checkSlideOverNeighborButtons(QMouseEvent* mouseEvent, class QAbstractButton* startingButton);
};
 
 
#endif // KISCOLORLABELBUTTON_H