//--------------------------------------------------------------------------
// $Id: Q3GUI/ExportImageDlg.hpp 2013/08/20 13:28:24 philw $
//--------------------------------------------------------------------------

#ifndef ExportImageDlgINCLUDED
#define ExportImageDlgINCLUDED 1

#include <QFileDialog>  //--- base class

class QComboBox;
class QFrame;
class QHideEvent;
class QLabel;
class QShowEvent;
class QSpinBox;

//=======================================================
//+class
//
// CLASS: 
//   ExportImageDlg : QFileDialog
//
// DESCRIPTION: 
//   Dialog that extends QFileDialog to allow the user to specify
//   image attributes (image size, format, resolution) for exporting 
//   a GUI element as an image file.  These new GUI elements appear
//   at the bottom of the file dialog.
//
//   The dialog saves the user's most recent image settings and directory
//   into their local qt settings file.
//
//-------------------------------------------------------

class ExportImageDlg : public QFileDialog
{
   Q_OBJECT

public:
   // Note [Phil, Gnats 5317, 8-19-2013, RW 6.4, Qt 4.8.4]: A resolution
   // of "100" turns OFF compression, which is a disaster for PNG and GIF
   // files (e.g. 162MB instead of 1MB).
   //
   enum { MAX_PNG_RESOLUTION = 85 };

public:
   ExportImageDlg(QWidget* parent=0, const char* name=0, bool modal=false);
   ~ExportImageDlg();

   QString selectedFile() const;
   
   // See note above. Special processing for PNG and GIF files.
   int getResolution() const; // [0..100]
   void setResolution (int resolution);

   QString getFormat() const { return _format; }
   void setFormat(QString format) { _format = format; }
   bool isPngOrGif() const;

   int getWidth() const { return _width; }
   void setWidth(int w);

   int getHeight() const { return _height; }
   void setHeight(int h);

   QString getInitDir() const { return _dir; }
   void setInitDir(QString dir) { _dir = dir; }

protected slots:
   virtual void accept();

protected:
   // Virtual from QWidget
   virtual void showEvent (QShowEvent*);
   virtual void hideEvent (QHideEvent*);

protected:
   QString _dir;
   int _width;
   int _height;
   int _resolution;
   QString _format;

private:
   QFrame*    _userOptsFrame;
   QLabel*    _resolutionLabel;
   QComboBox* _resolutionCombo;
   QLabel*    _widthLabel;
   QSpinBox*  _widthBox;
   QLabel*    _heightLabel;
   QSpinBox*  _heightBox;

};

#endif // ExportImageDlgINCLUDED
//--- (end ExportImageDlg.hpp) ---