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 #include "wx/gtk/private.h"
  15
  16 //-----------------------------------------------------------------------------
  17 // wxGTKDCImpl
  18 //-----------------------------------------------------------------------------
  19
  20 IMPLEMENT_ABSTRACT_CLASS(wxGTKDCImpl, wxDCImpl)
  21
  22 wxGTKDCImpl::wxGTKDCImpl( wxDC *owner )
  23    : wxDCImpl( owner )
  24 {
  25     m_ok = FALSE;
  26
  27     m_pen = *wxBLACK_PEN;
  28     m_font = *wxNORMAL_FONT;
  29     m_brush = *wxWHITE_BRUSH;
  30 }
  31
  32 wxGTKDCImpl::~wxGTKDCImpl()
  33 {
  34 }
  35
  36 void wxGTKDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
  37 {
  38     m_clipping = TRUE;
  39     m_clipX1 = x;
  40     m_clipY1 = y;
  41     m_clipX2 = x + width;
  42     m_clipY2 = y + height;
  43 }
  44
  45 // ---------------------------------------------------------------------------
  46 // get DC capabilities
  47 // ---------------------------------------------------------------------------
  48
  49 void wxGTKDCImpl::DoGetSizeMM( int* width, int* height ) const
  50 {
  51     int w = 0;
  52     int h = 0;
  53     GetOwner()->GetSize( &w, &h );
  54     if (width) *width = int( double(w) / (m_userScaleX*m_mm_to_pix_x) );
  55     if (height) *height = int( double(h) / (m_userScaleY*m_mm_to_pix_y) );
  56 }
  57
  58 // Resolution in pixels per logical inch
  59 wxSize wxGTKDCImpl::GetPPI() const
  60 {
  61     // TODO (should probably be pure virtual)
  62     return wxSize(0, 0);
  63 }