src/motif/statbmp.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "statbmp.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #include "wx/defs.h"
  20
  21 #include "wx/statbmp.h"
  22
  23 #ifdef __VMS__
  24 #pragma message disable nosimpint
  25 #endif
  26 #include <Xm/Xm.h>
  27 #include <Xm/Label.h>
  28 #include <Xm/LabelG.h>
  29 #ifdef __VMS__
  30 #pragma message enable nosimpint
  31 #endif
  32
  33 #include "wx/motif/private.h"
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
  36
  37 /*
  38  * wxStaticBitmap
  39  */
  40
  41 bool wxStaticBitmap::Create(wxWindow *parent, wxWindowID id,
  42            const wxBitmap& bitmap,
  43            const wxPoint& pos,
  44            const wxSize& size,
  45            long style,
  46            const wxString& name)
  47 {
  48     if( !CreateControl( parent, id, pos, size, style, wxDefaultValidator,
  49                         name ) )
  50         return false;
  51
  52     m_messageBitmap = bitmap;
  53     m_messageBitmapOriginal = bitmap;
  54
  55     Widget parentWidget = (Widget) parent->GetClientWidget();
  56
  57     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("staticBitmap",
  58 #if USE_GADGETS
  59                     xmLabelGadgetClass, parentWidget,
  60 #else
  61                     xmLabelWidgetClass, parentWidget,
  62 #endif
  63                     XmNalignment, XmALIGNMENT_BEGINNING,
  64                     NULL);
  65
  66     ChangeBackgroundColour ();
  67
  68     DoSetBitmap();
  69
  70     ChangeFont(false);
  71
  72     wxSize actualSize(size);
  73     // work around the cases where the bitmap is a wxNull(Icon/Bitmap)
  74     if (actualSize.x == -1)
  75         actualSize.x = bitmap.Ok() ? bitmap.GetWidth() : 1;
  76     if (actualSize.y == -1)
  77         actualSize.y = bitmap.Ok() ? bitmap.GetHeight() : 1;
  78     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  79                   pos.x, pos.y, actualSize.x, actualSize.y);
  80
  81     return true;
  82 }
  83
  84 wxStaticBitmap::~wxStaticBitmap()
  85 {
  86     SetBitmap(wxNullBitmap);
  87 }
  88
  89 void wxStaticBitmap::DoSetBitmap()
  90 {
  91     Widget widget = (Widget) m_mainWidget;
  92     int w2, h2;
  93
  94     if (m_messageBitmapOriginal.Ok())
  95     {
  96         w2 = m_messageBitmapOriginal.GetWidth();
  97         h2 = m_messageBitmapOriginal.GetHeight();
  98
  99         Pixmap pixmap;
 100
 101         // Must re-make the bitmap to have its transparent areas drawn
 102         // in the current widget background colour.
 103         if (m_messageBitmapOriginal.GetMask())
 104         {
 105             int backgroundPixel;
 106             XtVaGetValues( widget, XmNbackground, &backgroundPixel,
 107                 NULL);
 108
 109             wxColour col;
 110             col.SetPixel(backgroundPixel);
 111
 112             wxBitmap newBitmap = wxCreateMaskedBitmap(m_messageBitmapOriginal, col);
 113             m_messageBitmap = newBitmap;
 114
 115             pixmap = (Pixmap) m_messageBitmap.GetDrawable();
 116         }
 117         else
 118         {
 119             m_bitmapCache.SetBitmap( m_messageBitmap );
 120             pixmap = (Pixmap)m_bitmapCache.GetLabelPixmap(widget);
 121         }
 122
 123         XtVaSetValues (widget,
 124             XmNlabelPixmap, pixmap,
 125             XmNlabelType, XmPIXMAP,
 126             NULL);
 127
 128         SetSize(w2, h2);
 129     }
 130     else
 131     {
 132         // Null bitmap: must not use current pixmap
 133         // since it is no longer valid.
 134         XtVaSetValues (widget,
 135             XmNlabelType, XmSTRING,
 136             XmNlabelPixmap, XmUNSPECIFIED_PIXMAP,
 137             NULL);
 138     }
 139 }
 140
 141 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 142 {
 143     m_messageBitmap = bitmap;
 144     m_messageBitmapOriginal = bitmap;
 145
 146     DoSetBitmap();
 147 }
 148
 149 void wxStaticBitmap::ChangeBackgroundColour()
 150 {
 151     wxWindow::ChangeBackgroundColour();
 152
 153     // must recalculate the background colour
 154     m_bitmapCache.SetColoursChanged();
 155     DoSetBitmap();
 156 }
 157
 158 void wxStaticBitmap::ChangeForegroundColour()
 159 {
 160     m_bitmapCache.SetColoursChanged();
 161     wxWindow::ChangeForegroundColour();
 162 }
 163