src/motif/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/dcmemory.cpp
   3 // Purpose:     wxMemoryDCImpl 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/utils.h"
  17     #include "wx/settings.h"
  18     #include "wx/dcmemory.h"
  19     #include "wx/dcclient.h"
  20 #endif
  21
  22 #ifdef __VMS__
  23 #pragma message disable nosimpint
  24 #endif
  25 #include <Xm/Xm.h>
  26 #ifdef __VMS__
  27 #pragma message enable nosimpint
  28 #endif
  29
  30 #include "wx/motif/private.h"
  31 #include "wx/motif/dcmemory.h"
  32
  33 //-----------------------------------------------------------------------------
  34 // wxMemoryDCImpl
  35 //-----------------------------------------------------------------------------
  36
  37 IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxWindowDCImpl)
  38
  39 void wxMemoryDCImpl::Init()
  40 {
  41     m_ok = true;
  42     m_display = wxGetDisplay();
  43
  44     Display* display = (Display*) m_display;
  45
  46     XGCValues gcvalues;
  47     gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
  48     gcvalues.background = WhitePixel (display, DefaultScreen (display));
  49     gcvalues.graphics_exposures = False;
  50     gcvalues.subwindow_mode = IncludeInferiors;
  51     gcvalues.line_width = 1;
  52     m_gc = (WXGC) XCreateGC (display, RootWindow (display, DefaultScreen (display)),
  53         GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth | GCSubwindowMode,
  54         &gcvalues);
  55
  56     m_backgroundPixel = gcvalues.background;
  57
  58     SetBrush (* wxWHITE_BRUSH);
  59     SetPen (* wxBLACK_PEN);
  60     SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
  61 }
  62
  63 wxMemoryDCImpl::wxMemoryDCImpl(wxMemoryDC *owner, wxDC* dc)
  64               : wxWindowDCImpl(owner)
  65 {
  66     m_ok = true;
  67     if (dc && dc->IsKindOf(CLASSINFO(wxWindowDC)))
  68         m_display = ((wxWindowDCImpl *)dc->GetImpl())->GetDisplay();
  69     else
  70         m_display = wxGetDisplay();
  71
  72     Display* display = (Display*) m_display;
  73
  74     XGCValues gcvalues;
  75     gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
  76     gcvalues.background = WhitePixel (display, DefaultScreen (display));
  77     gcvalues.graphics_exposures = False;
  78     gcvalues.subwindow_mode = IncludeInferiors;
  79     gcvalues.line_width = 1;
  80     m_gc = (WXGC) XCreateGC (display, RootWindow (display, DefaultScreen (display)),
  81         GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth | GCSubwindowMode,
  82         &gcvalues);
  83
  84     m_backgroundPixel = gcvalues.background;
  85
  86     SetBrush (* wxWHITE_BRUSH);
  87     SetPen (* wxBLACK_PEN);
  88 }
  89
  90 wxMemoryDCImpl::~wxMemoryDCImpl(void)
  91 {
  92 }
  93
  94 void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
  95 {
  96     m_bitmap = bitmap;
  97
  98     if (m_gc)
  99         XFreeGC((Display*) m_display, (GC) m_gc);
 100     m_gc = (WXGC) NULL;
 101
 102     if (m_bitmap.Ok() && (bitmap.GetDisplay() == m_display))
 103     {
 104         m_pixmap = m_bitmap.GetDrawable();
 105         Display* display = (Display*) m_display;
 106
 107         XGCValues gcvalues;
 108         gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
 109         gcvalues.background = WhitePixel (display, DefaultScreen (display));
 110         gcvalues.graphics_exposures = False;
 111         gcvalues.subwindow_mode = IncludeInferiors;
 112         gcvalues.line_width = 1;
 113         m_gc = (WXGC) XCreateGC (display, (Drawable)m_pixmap/* RootWindow (display, DefaultScreen (display)) */,
 114             GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth | GCSubwindowMode,
 115             &gcvalues);
 116
 117         m_backgroundPixel = gcvalues.background;
 118         m_ok = true;
 119
 120         SetBrush (* wxWHITE_BRUSH);
 121         SetPen (* wxBLACK_PEN);
 122     }
 123     else
 124     {
 125         m_ok = false;
 126         m_pixmap = (WXPixmap) 0;
 127     };
 128 }
 129
 130 void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const
 131 {
 132     if (m_bitmap.Ok())
 133     {
 134         if (width) (*width) = m_bitmap.GetWidth();
 135         if (height) (*height) = m_bitmap.GetHeight();
 136     }
 137     else
 138     {
 139         if (width) (*width) = 0;
 140         if (height) (*height) = 0;
 141     };
 142 }