src/motif/statbmp.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/motif/statbmp.cpp
   3 // Purpose:     wxStaticBitmap
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   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 #include "wx/statbmp.h"
  16
  17 #ifdef __VMS__
  18 #pragma message disable nosimpint
  19 #endif
  20 #include <Xm/Xm.h>
  21 #include <Xm/Label.h>
  22 #include <Xm/LabelG.h>
  23 #ifdef __VMS__
  24 #pragma message enable nosimpint
  25 #endif
  26
  27 #include "wx/motif/private.h"
  28
  29 IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
  30
  31 /*
  32  * wxStaticBitmap
  33  */
  34
  35 bool wxStaticBitmap::Create(wxWindow *parent, wxWindowID id,
  36            const wxBitmap& bitmap,
  37            const wxPoint& pos,
  38            const wxSize& size,
  39            long style,
  40            const wxString& name)
  41 {
  42     if( !CreateControl( parent, id, pos, size, style, wxDefaultValidator,
  43                         name ) )
  44         return false;
  45
  46     m_messageBitmap = bitmap;
  47     m_messageBitmapOriginal = bitmap;
  48
  49     Widget parentWidget = (Widget) parent->GetClientWidget();
  50
  51     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("staticBitmap",
  52 #if wxUSE_GADGETS
  53                     xmLabelGadgetClass, parentWidget,
  54 #else
  55                     xmLabelWidgetClass, parentWidget,
  56 #endif
  57                     XmNalignment, XmALIGNMENT_BEGINNING,
  58                     NULL);
  59
  60     ChangeBackgroundColour ();
  61
  62     DoSetBitmap();
  63
  64     ChangeFont(false);
  65
  66     wxSize actualSize(size);
  67     // work around the cases where the bitmap is a wxNull(Icon/Bitmap)
  68     if (actualSize.x == -1)
  69         actualSize.x = bitmap.Ok() ? bitmap.GetWidth() : 1;
  70     if (actualSize.y == -1)
  71         actualSize.y = bitmap.Ok() ? bitmap.GetHeight() : 1;
  72     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  73                   pos.x, pos.y, actualSize.x, actualSize.y);
  74
  75     return true;
  76 }
  77
  78 wxStaticBitmap::~wxStaticBitmap()
  79 {
  80     SetBitmap(wxNullBitmap);
  81 }
  82
  83 void wxStaticBitmap::DoSetBitmap()
  84 {
  85     Widget widget = (Widget) m_mainWidget;
  86     int w2, h2;
  87
  88     if (m_messageBitmapOriginal.Ok())
  89     {
  90         w2 = m_messageBitmapOriginal.GetWidth();
  91         h2 = m_messageBitmapOriginal.GetHeight();
  92
  93         Pixmap pixmap;
  94
  95         // Must re-make the bitmap to have its transparent areas drawn
  96         // in the current widget background colour.
  97         if (m_messageBitmapOriginal.GetMask())
  98         {
  99             WXPixel backgroundPixel;
 100             XtVaGetValues( widget, XmNbackground, &backgroundPixel,
 101                 NULL);
 102
 103             wxColour col;
 104             col.SetPixel(backgroundPixel);
 105
 106             wxBitmap newBitmap = wxCreateMaskedBitmap(m_messageBitmapOriginal, col);
 107             m_messageBitmap = newBitmap;
 108
 109             pixmap = (Pixmap) m_messageBitmap.GetDrawable();
 110         }
 111         else
 112         {
 113             m_bitmapCache.SetBitmap( m_messageBitmap );
 114             pixmap = (Pixmap)m_bitmapCache.GetLabelPixmap(widget);
 115         }
 116
 117         XtVaSetValues (widget,
 118             XmNlabelPixmap, pixmap,
 119             XmNlabelType, XmPIXMAP,
 120             NULL);
 121
 122         SetSize(w2, h2);
 123     }
 124     else
 125     {
 126         // Null bitmap: must not use current pixmap
 127         // since it is no longer valid.
 128         XtVaSetValues (widget,
 129             XmNlabelType, XmSTRING,
 130             XmNlabelPixmap, XmUNSPECIFIED_PIXMAP,
 131             NULL);
 132     }
 133 }
 134
 135 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 136 {
 137     m_messageBitmap = bitmap;
 138     m_messageBitmapOriginal = bitmap;
 139
 140     DoSetBitmap();
 141 }
 142
 143 void wxStaticBitmap::ChangeBackgroundColour()
 144 {
 145     wxWindow::ChangeBackgroundColour();
 146
 147     // must recalculate the background colour
 148     m_bitmapCache.SetColoursChanged();
 149     DoSetBitmap();
 150 }
 151
 152 void wxStaticBitmap::ChangeForegroundColour()
 153 {
 154     m_bitmapCache.SetColoursChanged();
 155     wxWindow::ChangeForegroundColour();
 156 }