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