src/gtk/dc.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dc.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/dc.h"
  14
  15 //-----------------------------------------------------------------------------
  16 // wxDC
  17 //-----------------------------------------------------------------------------
  18
  19 IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
  20
  21 wxDC::wxDC()
  22 {
  23     m_ok = FALSE;
  24
  25     m_pen = *wxBLACK_PEN;
  26     m_font = *wxNORMAL_FONT;
  27     m_brush = *wxWHITE_BRUSH;
  28 }
  29
  30 void wxDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
  31 {
  32     m_clipping = TRUE;
  33     m_clipX1 = x;
  34     m_clipY1 = y;
  35     m_clipX2 = x + width;
  36     m_clipY2 = y + height;
  37 }
  38
  39 // ---------------------------------------------------------------------------
  40 // get DC capabilities
  41 // ---------------------------------------------------------------------------
  42
  43 void wxDC::DoGetSizeMM( int* width, int* height ) const
  44 {
  45     int w = 0;
  46     int h = 0;
  47     GetSize( &w, &h );
  48     if (width) *width = int( double(w) / (m_userScaleX*m_mm_to_pix_x) );
  49     if (height) *height = int( double(h) / (m_userScaleY*m_mm_to_pix_y) );
  50 }
  51
  52 // Resolution in pixels per logical inch
  53 wxSize wxDC::GetPPI() const
  54 {
  55     // TODO (should probably be pure virtual)
  56     return wxSize(0, 0);
  57 }