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     PreCreation();
  46
  47     m_messageBitmap = bitmap;
  48     m_messageBitmapOriginal = bitmap;
  49
  50     Widget parentWidget = (Widget) parent->GetClientWidget();
  51
  52     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("staticBitmap",
  53 #if wxUSE_GADGETS
  54                     xmLabelGadgetClass, parentWidget,
  55 #else
  56                     xmLabelWidgetClass, parentWidget,
  57 #endif
  58                     XmNalignment, XmALIGNMENT_BEGINNING,
  59                     NULL);
  60
  61     wxSize actualSize(size);
  62     // work around the cases where the bitmap is a wxNull(Icon/Bitmap)
  63     if (actualSize.x == -1)
  64         actualSize.x = bitmap.Ok() ? bitmap.GetWidth() : 1;
  65     if (actualSize.y == -1)
  66         actualSize.y = bitmap.Ok() ? bitmap.GetHeight() : 1;
  67
  68     PostCreation();
  69     DoSetBitmap();
  70     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  71                   pos.x, pos.y, actualSize.x, actualSize.y);
  72
  73     return true;
  74 }
  75
  76 wxStaticBitmap::~wxStaticBitmap()
  77 {
  78     SetBitmap(wxNullBitmap);
  79 }
  80
  81 void wxStaticBitmap::DoSetBitmap()
  82 {
  83     Widget widget = (Widget) m_mainWidget;
  84     int w2, h2;
  85
  86     if (m_messageBitmapOriginal.Ok())
  87     {
  88         w2 = m_messageBitmapOriginal.GetWidth();
  89         h2 = m_messageBitmapOriginal.GetHeight();
  90
  91         Pixmap pixmap;
  92
  93         // Must re-make the bitmap to have its transparent areas drawn
  94         // in the current widget background colour.
  95         if (m_messageBitmapOriginal.GetMask())
  96         {
  97             WXPixel backgroundPixel;
  98             XtVaGetValues( widget, XmNbackground, &backgroundPixel,
  99                 NULL);
 100
 101             wxColour col;
 102             col.SetPixel(backgroundPixel);
 103
 104             wxBitmap newBitmap = wxCreateMaskedBitmap(m_messageBitmapOriginal, col);
 105             m_messageBitmap = newBitmap;
 106
 107             pixmap = (Pixmap) m_messageBitmap.GetDrawable();
 108         }
 109         else
 110         {
 111             m_bitmapCache.SetBitmap( m_messageBitmap );
 112             pixmap = (Pixmap)m_bitmapCache.GetLabelPixmap(widget);
 113         }
 114
 115         XtVaSetValues (widget,
 116             XmNlabelPixmap, pixmap,
 117             XmNlabelType, XmPIXMAP,
 118             NULL);
 119
 120         SetSize(w2, h2);
 121     }
 122     else
 123     {
 124         // Null bitmap: must not use current pixmap
 125         // since it is no longer valid.
 126         XtVaSetValues (widget,
 127             XmNlabelType, XmSTRING,
 128             XmNlabelPixmap, XmUNSPECIFIED_PIXMAP,
 129             NULL);
 130     }
 131 }
 132
 133 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 134 {
 135     m_messageBitmap = bitmap;
 136     m_messageBitmapOriginal = bitmap;
 137
 138     DoSetBitmap();
 139 }
 140
 141 void wxStaticBitmap::ChangeBackgroundColour()
 142 {
 143     wxWindow::ChangeBackgroundColour();
 144
 145     // must recalculate the background colour
 146     m_bitmapCache.SetColoursChanged();
 147     DoSetBitmap();
 148 }
 149
 150 void wxStaticBitmap::ChangeForegroundColour()
 151 {
 152     m_bitmapCache.SetColoursChanged();
 153     wxWindow::ChangeForegroundColour();
 154 }