qgscolordialog.h

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/***************************************************************************
    qgscolordialog.h - color selection dialog

    ---------------------
    begin                : March 19, 2013
    copyright            : (C) 2013 by Larry Shaffer
    email                : larrys at dakcarto dot com
 ***************************************************************************
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef QGSCOLORDIALOG_H
#define QGSCOLORDIALOG_H

#include <QColorDialog>
#include "qgisgui.h"
#include "ui_qgscolordialog.h"

class QColor;

class GUI_EXPORT QgsColorDialog : public QObject
{
    Q_OBJECT

  public:
    QgsColorDialog();
    ~QgsColorDialog();

    static QColor getLiveColor( const QColor& initialColor, QObject* updateObject, const char* updateSlot,
                                QWidget* parent = 0,
                                const QString& title = "",
                                QColorDialog::ColorDialogOptions options = 0 );
};


class GUI_EXPORT QgsColorDialogV2 : public QDialog, private Ui::QgsColorDialogBase
{

    Q_OBJECT

  public:

    QgsColorDialogV2( QWidget *parent = 0, Qt::WindowFlags fl = QgisGui::ModalDialogFlags,
                      const QColor& color = QColor() );

    ~QgsColorDialogV2();

    QColor color() const;

    void setTitle( const QString title );

    void setAllowAlpha( const bool allowAlpha );

    static QColor getLiveColor( const QColor& initialColor, QObject* updateObject, const char* updateSlot,
                                QWidget* parent = 0,
                                const QString& title = QString(),
                                const bool allowAlpha = true );

    static QColor getColor( const QColor &initialColor, QWidget *parent, const QString &title = QString(),
                            const bool allowAlpha = false );

  signals:

    void currentColorChanged( const QColor &color );

  public slots:

    void setColor( const QColor &color );

  protected:

    void closeEvent( QCloseEvent* e ) override;

    void mousePressEvent( QMouseEvent* e ) override;

    void mouseMoveEvent( QMouseEvent *e ) override;

    void mouseReleaseEvent( QMouseEvent *e ) override;

    void keyPressEvent( QKeyEvent *e ) override;

  private slots:

    void on_mHueRadio_toggled( bool checked );
    void on_mSaturationRadio_toggled( bool checked );
    void on_mValueRadio_toggled( bool checked );
    void on_mRedRadio_toggled( bool checked );
    void on_mGreenRadio_toggled( bool checked );
    void on_mBlueRadio_toggled( bool checked );

    void on_mButtonBox_accepted();
    void on_mButtonBox_rejected();
    void on_mButtonBox_clicked( QAbstractButton * button );
    void on_mAddColorToSchemeButton_clicked();

    void exportColors();
    void importColors();
    void importPalette();
    void removePalette();
    void newPalette();

    void schemeIndexChanged( int index );
    void listSelectionChanged( const QItemSelection &selected, const QItemSelection &deselected );

    void on_mAddCustomColorButton_clicked();

    void on_mSampleButton_clicked();
    void on_mTabWidget_currentChanged( int index );

  private:

    QColor mPreviousColor;

    bool mAllowAlpha;

    int mLastCustomColorIndex;

    bool mPickingColor;

    void saveSettings();

    void stopPicking( const QPoint& eventPos, const bool takeSample = true );

    QColor averageColor( const QImage &image ) const;

    QColor sampleColor( const QPoint &point ) const;

    void refreshSchemeComboBox();

    QString gplFilePath();
};

#endif // #ifndef QGSCOLORDIALOG_H