src/motif/dc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/dc.cpp
   3 // Purpose:     wxMotifDCImpl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/dcmemory.h"
  17 #endif
  18
  19 #include "wx/motif/dc.h"
  20
  21 IMPLEMENT_ABSTRACT_CLASS(wxMotifDCImpl, wxDCImpl)
  22
  23 //-----------------------------------------------------------------------------
  24 // wxMotifDCImpl
  25 //-----------------------------------------------------------------------------
  26
  27 wxMotifDCImpl::wxMotifDCImpl(wxDC *owner)
  28              : wxDCImpl(owner)
  29 {
  30     m_ok = false;
  31
  32     m_backgroundMode = wxTRANSPARENT;
  33 }
  34
  35 void wxMotifDCImpl::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y)
  36 {
  37     wxCHECK_RET( IsOk(), "invalid dc" );
  38     wxCHECK_RET( icon.Ok(), "invalid icon" );
  39
  40     DoDrawBitmap(icon, x, y, true);
  41 }
  42
  43 void wxMotifDCImpl::DoDrawBitmap( const wxBitmap& bitmap, wxCoord x, wxCoord y, bool useMask )
  44 {
  45     wxCHECK_RET( bitmap.Ok(), "invalid bitmap" );
  46
  47     wxMemoryDC memDC;
  48     memDC.SelectObjectAsSource(bitmap);
  49
  50 #if 0
  51     // Not sure if we need this. The mask should leave the masked areas as per
  52     // the original background of this DC.
  53     if (useMask)
  54     {
  55         // There might be transparent areas, so make these the same colour as this
  56         // DC
  57         memDC.SetBackground(* GetBackground());
  58         memDC.Clear();
  59     }
  60 #endif // 0
  61
  62     DoBlit(x, y, bitmap.GetWidth(), bitmap.GetHeight(), &memDC, 0, 0, wxCOPY, useMask);
  63
  64     memDC.SelectObject(wxNullBitmap);
  65 }
  66
  67 void wxMotifDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
  68 {
  69     m_clipping = true;
  70     m_clipX1 = x;
  71     m_clipY1 = y;
  72     m_clipX2 = x + width;
  73     m_clipY2 = y + height;
  74 }
  75
  76 void wxMotifDCImpl::DoGetSize( int* width, int* height ) const
  77 {
  78     if ( width )
  79         *width = m_maxX - m_minX;
  80     if ( height )
  81         *height = m_maxY - m_minY;
  82 }
  83
  84 void wxMotifDCImpl::DoGetSizeMM( int* width, int* height ) const
  85 {
  86     int w, h;
  87     GetSize( &w, &h );
  88
  89     if ( width )
  90         *width = int( double(w) / (m_scaleX*m_mm_to_pix_x) );
  91     if ( height )
  92         *height = int( double(h) / (m_scaleY*m_mm_to_pix_y) );
  93 }
  94
  95 // Resolution in pixels per logical inch
  96 wxSize wxMotifDCImpl::GetPPI() const
  97 {
  98     // TODO (should probably be pure virtual)
  99     return wxSize(0, 0);
 100 }