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/***************************************************************
* Name: Thumbnail.h
* Purpose: Defines canvas thumbnail class
* Author: Michal Bližňák (michal.bliznak@tiscali.cz)
* Created: 2009-06-09
* Copyright: Michal Bližňák
* License: wxWidgets license (www.wxwidgets.org)
* Notes:
**************************************************************/
#ifndef _WXSFTHUMBNAIL_H
#define _WXSFTHUMBNAIL_H
#include <wx/wxsf/ShapeCanvas.h>
/**
* \brief Class encalpsulating a shape canvas' thumbnail. This GUI control derived from wxPanel can be associated with
* one shape canvas and can be used for previewing and manipulating of it.
*/
class WXDLLIMPEXP_SF wxSFThumbnail : public wxPanel
{
public:
/** \brief Internally used IDs */
enum IDS
{
ID_UPDATETIMER = wxID_HIGHEST + 1,
IDM_SHOWELEMENTS,
IDM_SHOWCONNECTIONS
};
/** \brief Thumbnail style */
enum THUMBSTYLE
{
/** \brief Show diagram elements (excluding connections) in the thumbnail. */
tsSHOW_ELEMENTS = 1,
/** \brief Show diagram connections in the thumbnail. */
tsSHOW_CONNECTIONS = 2
};
/**
* \brief Constructor.
* \param parent Pointer to parent window
*/
wxSFThumbnail(wxWindow *parent);
/** \brief Destructor. */
virtual ~wxSFThumbnail();
// public member data accessors
/**
* \brief Set the thumbnail style.
* \param style Style value composed of predefined flags
* \sa THUMBSTYLE
*/
void SetThumbStyle(int style) { m_nThumbStyle = style; }
/**
* \brief Get current thumbnail style.
* \return Style value composed of predefined flags
* \sa THUMBSTYLE
*/
int GetThumbStyle() { return m_nThumbStyle; }
// public functions
/**
* \brief Set canvas managed by the thumbnail.
* \param canvas Pointer to shape canvas
*/
void SetCanvas(wxSFShapeCanvas *canvas);
// public virtual functions
/**
* \brief Implementation of drawing of the thumbnail's content. This virtual function can be overrided
* by the user for customization of the thumbnail appearance.
* \param dc Reference to output device context
*/
virtual void DrawContent(wxDC &dc);
protected:
// protected data members
wxSFShapeCanvas *m_pCanvas; /** \brief Pointer to managed shape canvas. */
wxTimer m_UpdateTimer; /** \brief Timer user for the thumbnail's update */
wxPoint m_nPrevMousePos; /** \brief Auxiliary varialble */
double m_nScale; /** \brief Current thumbnail's scale */
int m_nThumbStyle; /** \brief Current thumbnail's style */
// protected event handlers
/** \brief Internally used event handler. */
void _OnPaint( wxPaintEvent &event );
// protected functions
/**
* \brief Get offset (view start) of managed shape canvas defined in pixels.
* \return Canvas offset in pixels
*/
wxSize GetCanvasOffset();
private:
// private event handlers
/** \brief Internally used event handler. */
void _OnEraseBackground( wxEraseEvent& event );
/** \brief Internally used event handler. */
void _OnMouseMove( wxMouseEvent &event );
/** \brief Internally used event handler. */
void _OnLeftDown( wxMouseEvent &event );
/** \brief Internally used event handler. */
void _OnRightDown( wxMouseEvent &event );
/** \brief Internally used event handler. */
void _OnTimer( wxTimerEvent &event );
/** \brief Internally used event handler. */
void _OnShowElements( wxCommandEvent &event );
/** \brief Internally used event handler. */
void _OnShowConnections( wxCommandEvent &event );
/** \brief Internally used event handler. */
void _OnUpdateShowElements( wxUpdateUIEvent &event );
/** \brief Internally used event handler. */
void _OnUpdateShowConnections( wxUpdateUIEvent &event );
DECLARE_EVENT_TABLE();
};
#endif //_WXSFTHUMBNAIL_H
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