Converting uninitialized data is not a Good Idea

[wxWidgets.git] / src / gtk / pen.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        pen.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////


#ifdef __GNUG__
#pragma implementation "pen.h"
#endif

#include "wx/pen.h"

#include <gdk/gdk.h>

//-----------------------------------------------------------------------------
// wxPen
//-----------------------------------------------------------------------------

class wxPenRefData: public wxObjectRefData
{
public:

  wxPenRefData();
  wxPenRefData( const wxPenRefData& data );

  int        m_width;
  int        m_style;
  int        m_joinStyle;
  int        m_capStyle;
  wxColour   m_colour;
  int        m_countDashes;
  wxGTKDash *m_dash;
};

wxPenRefData::wxPenRefData()
{
    m_width = 1;
    m_style = wxSOLID;
    m_joinStyle = wxJOIN_ROUND;
    m_capStyle = wxCAP_ROUND;
    m_dash = (wxGTKDash*) NULL;
    m_countDashes = 0;
}

wxPenRefData::wxPenRefData( const wxPenRefData& data )
{
    m_style = data.m_style;
    m_width = data.m_width;
    m_joinStyle = data.m_joinStyle;
    m_capStyle = data.m_capStyle;
    m_colour = data.m_colour;
    m_countDashes = data.m_countDashes;
/*
    if (data.m_dash)  TODO
      m_dash = new
*/
    m_dash = data.m_dash;
}

//-----------------------------------------------------------------------------

#define M_PENDATA ((wxPenRefData *)m_refData)

IMPLEMENT_DYNAMIC_CLASS(wxPen,wxGDIObject)

wxPen::wxPen()
{
}

wxPen::wxPen( const wxColour &colour, int width, int style )
{
    m_refData = new wxPenRefData();
    M_PENDATA->m_width = width;
    M_PENDATA->m_style = style;
    M_PENDATA->m_colour = colour;
}

wxPen::wxPen( const wxPen& pen )
{
    Ref( pen );
}

wxPen::~wxPen()
{
}

wxPen& wxPen::operator = ( const wxPen& pen )
{
    if ( m_refData != pen.m_refData )
        Ref( pen );

    return *this;
}

bool wxPen::operator == ( const wxPen& pen ) const
{
    return m_refData == pen.m_refData;
}

bool wxPen::operator != ( const wxPen& pen ) const
{
    return m_refData != pen.m_refData;
}

void wxPen::SetColour( const wxColour &colour )
{
    Unshare();
    M_PENDATA->m_colour = colour;
}

void wxPen::SetDashes( int number_of_dashes, const wxDash *dash )
{
    Unshare();
    M_PENDATA->m_countDashes = number_of_dashes;
    M_PENDATA->m_dash = (wxGTKDash *)dash; /* TODO */
}

void wxPen::SetColour( int red, int green, int blue )
{
    Unshare();
    M_PENDATA->m_colour.Set( red, green, blue );
}

void wxPen::SetCap( int capStyle )
{
    Unshare();
    M_PENDATA->m_capStyle = capStyle;
}

void wxPen::SetJoin( int joinStyle )
{
    Unshare();
    M_PENDATA->m_joinStyle = joinStyle;
}

void wxPen::SetStyle( int style )
{
    Unshare();
    M_PENDATA->m_style = style;
}

void wxPen::SetWidth( int width )
{
    Unshare();
    M_PENDATA->m_width = width;
}

int wxPen::GetDashes( wxDash **ptr ) const
{
     *ptr = (M_PENDATA ? (wxDash*)M_PENDATA->m_dash : (wxDash*) NULL);
     return (M_PENDATA ? M_PENDATA->m_countDashes : 0);
}

int wxPen::GetDashCount() const
{
    return (M_PENDATA->m_countDashes);
}

wxDash* wxPen::GetDash() const
{
    return (wxDash*)M_PENDATA->m_dash;
}

int wxPen::GetCap() const
{
    wxCHECK_MSG( Ok(), -1, wxT("invalid pen") );

    return M_PENDATA->m_capStyle;
}

int wxPen::GetJoin() const
{
    wxCHECK_MSG( Ok(), -1, wxT("invalid pen") );

    return M_PENDATA->m_joinStyle;
}

int wxPen::GetStyle() const
{
    wxCHECK_MSG( Ok(), -1, wxT("invalid pen") );

    return M_PENDATA->m_style;
}

int wxPen::GetWidth() const
{
    wxCHECK_MSG( Ok(), -1, wxT("invalid pen") );

    return M_PENDATA->m_width;
}

wxColour &wxPen::GetColour() const
{
    wxCHECK_MSG( Ok(), wxNullColour, wxT("invalid pen") );

    return M_PENDATA->m_colour;
}

bool wxPen::Ok() const
{
    return (m_refData != NULL);
}

void wxPen::Unshare()
{
    if (!m_refData)
    {
        m_refData = new wxPenRefData();
    }
    else
    {
        wxPenRefData* ref = new wxPenRefData( *(wxPenRefData*)m_refData );
        UnRef();
        m_refData = ref;
    }
}