qgscolorbutton.h

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/***************************************************************************
    qgscolorbutton.h - Color button
     --------------------------------------
    Date                 : 12-Dec-2006
    Copyright            : (C) 2006 by Tom Elwertowski
    Email                : telwertowski at users dot sourceforge dot net
 ***************************************************************************
 *                                                                         *
 *   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 QGSCOLORBUTTON_H
#define QGSCOLORBUTTON_H

#include <QColorDialog>
#include <QPushButton>
#include <QTemporaryFile>


class GUI_EXPORT QgsColorButton: public QPushButton
{
    Q_OBJECT

  public:
    QgsColorButton( QWidget *parent = 0, QString cdt = "", QColorDialog::ColorDialogOptions cdo = 0 );
    ~QgsColorButton();

    void setColor( const QColor &color );
    QColor color() const;

    void setColorDialogOptions( QColorDialog::ColorDialogOptions cdo );

    QColorDialog::ColorDialogOptions colorDialogOptions();

    void setColorDialogTitle( QString cdt );

    QString colorDialogTitle();

    bool acceptLiveUpdates() { return mAcceptLiveUpdates; }

    void setAcceptLiveUpdates( bool accept ) { mAcceptLiveUpdates = accept; }

  public slots:
    void setButtonBackground();

  signals:
    void colorChanged( const QColor &color );

  protected:
    void changeEvent( QEvent* e );
#if 0 // causes too many cyclical updates, but may be needed on some platforms
    void paintEvent( QPaintEvent* e );
#endif
    void showEvent( QShowEvent* e );
    static const QPixmap& transpBkgrd();

  private:
    QString mColorDialogTitle;
    QColor mColor;
    QColorDialog::ColorDialogOptions mColorDialogOptions;
    bool mAcceptLiveUpdates;
    QTemporaryFile mTempPNG;

  private slots:
    void onButtonClicked();

    void setValidColor( const QColor& newColor );
};

#endif