src/motif/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcmemory.cpp
   3 // Purpose:     wxMemoryDC 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 #ifdef __GNUG__
  13 #pragma implementation "dcmemory.h"
  14 #endif
  15
  16 #include "wx/dcmemory.h"
  17 #include "wx/settings.h"
  18 #include "wx/utils.h"
  19
  20 #ifdef __VMS__
  21 #pragma message disable nosimpint
  22 #endif
  23 #include <Xm/Xm.h>
  24 #ifdef __VMS__
  25 #pragma message enable nosimpint
  26 #endif
  27
  28 #include "wx/motif/private.h"
  29
  30 //-----------------------------------------------------------------------------
  31 // wxMemoryDC
  32 //-----------------------------------------------------------------------------
  33
  34 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxWindowDC)
  35
  36 wxMemoryDC::wxMemoryDC(void)
  37 {
  38     m_ok = TRUE;
  39     m_display = wxGetDisplay();
  40
  41     Display* display = (Display*) m_display;
  42
  43     XGCValues gcvalues;
  44     gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
  45     gcvalues.background = WhitePixel (display, DefaultScreen (display));
  46     gcvalues.graphics_exposures = False;
  47     gcvalues.subwindow_mode = IncludeInferiors;
  48     gcvalues.line_width = 1;
  49     m_gc = (WXGC) XCreateGC (display, RootWindow (display, DefaultScreen (display)),
  50         GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth | GCSubwindowMode,
  51         &gcvalues);
  52
  53     m_backgroundPixel = (int) gcvalues.background;
  54
  55     // Get the current Font so we can set it back later
  56     XGCValues valReturn;
  57     XGetGCValues((Display*) m_display, (GC) m_gc, GCFont, &valReturn);
  58     m_oldFont = (WXFont) valReturn.font;
  59     SetBrush (* wxWHITE_BRUSH);
  60     SetPen (* wxBLACK_PEN);
  61     SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
  62 };
  63
  64 wxMemoryDC::wxMemoryDC( wxDC* dc )
  65 {
  66     m_ok = TRUE;
  67     if (dc && dc->IsKindOf(CLASSINFO(wxWindowDC)))
  68         m_display = ((wxWindowDC*)dc)->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 = (int) gcvalues.background;
  85
  86     // Get the current Font so we can set it back later
  87     XGCValues valReturn;
  88     XGetGCValues((Display*) m_display, (GC) m_gc, GCFont, &valReturn);
  89     m_oldFont = (WXFont) valReturn.font;
  90     SetBrush (* wxWHITE_BRUSH);
  91     SetPen (* wxBLACK_PEN);
  92 };
  93
  94 wxMemoryDC::~wxMemoryDC(void)
  95 {
  96 };
  97
  98 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  99 {
 100     m_bitmap = bitmap;
 101
 102     if (m_gc)
 103         XFreeGC((Display*) m_display, (GC) m_gc);
 104     m_gc = (WXGC) NULL;
 105
 106     if (m_bitmap.Ok() && (bitmap.GetDisplay() == m_display))
 107     {
 108         m_pixmap = m_bitmap.GetPixmap();
 109         Display* display = (Display*) m_display;
 110
 111         XGCValues gcvalues;
 112         gcvalues.foreground = BlackPixel (display, DefaultScreen (display));
 113         gcvalues.background = WhitePixel (display, DefaultScreen (display));
 114         gcvalues.graphics_exposures = False;
 115         gcvalues.subwindow_mode = IncludeInferiors;
 116         gcvalues.line_width = 1;
 117         m_gc = (WXGC) XCreateGC (display, RootWindow (display, DefaultScreen (display)),
 118             GCForeground | GCBackground | GCGraphicsExposures | GCLineWidth | GCSubwindowMode,
 119             &gcvalues);
 120
 121         m_backgroundPixel = (int) gcvalues.background;
 122         m_ok = TRUE;
 123
 124         // Get the current Font so we can set it back later
 125         XGCValues valReturn;
 126         XGetGCValues((Display*) m_display, (GC) m_gc, GCFont, &valReturn);
 127         m_oldFont = (WXFont) valReturn.font;
 128
 129         bool oldOpt = GetOptimization();
 130         SetOptimization(FALSE);
 131
 132         SetBrush (* wxWHITE_BRUSH);
 133         SetPen (* wxBLACK_PEN);
 134
 135         SetOptimization(oldOpt);
 136
 137     }
 138     else
 139     {
 140         m_ok = FALSE;
 141         m_pixmap = (WXPixmap) 0;
 142     };
 143 };
 144
 145 void wxMemoryDC::DoGetSize( int *width, int *height ) const
 146 {
 147     if (m_bitmap.Ok())
 148     {
 149         if (width) (*width) = m_bitmap.GetWidth();
 150         if (height) (*height) = m_bitmap.GetHeight();
 151     }
 152     else
 153     {
 154         if (width) (*width) = 0;
 155         if (height) (*height) = 0;
 156     };
 157 };
 158
 159