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 // Copyright:   (c) Julian Smart
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/statbmp.h"
  15
  16 #ifdef __VMS__
  17 #pragma message disable nosimpint
  18 #endif
  19 #include <Xm/Xm.h>
  20 #include <Xm/Label.h>
  21 #include <Xm/LabelG.h>
  22 #ifdef __VMS__
  23 #pragma message enable nosimpint
  24 #endif
  25
  26 #include "wx/motif/private.h"
  27
  28 /*
  29  * wxStaticBitmap
  30  */
  31
  32 bool wxStaticBitmap::Create(wxWindow *parent, wxWindowID id,
  33            const wxBitmap& bitmap,
  34            const wxPoint& pos,
  35            const wxSize& size,
  36            long style,
  37            const wxString& name)
  38 {
  39     if( !CreateControl( parent, id, pos, size, style, wxDefaultValidator,
  40                         name ) )
  41         return false;
  42     PreCreation();
  43
  44     m_messageBitmap = bitmap;
  45     m_messageBitmapOriginal = bitmap;
  46
  47     Widget parentWidget = (Widget) parent->GetClientWidget();
  48
  49     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("staticBitmap",
  50 #if wxUSE_GADGETS
  51                     xmLabelGadgetClass, parentWidget,
  52 #else
  53                     xmLabelWidgetClass, parentWidget,
  54 #endif
  55                     XmNalignment, XmALIGNMENT_BEGINNING,
  56                     NULL);
  57
  58     wxSize actualSize(size);
  59     // work around the cases where the bitmap is a wxNull(Icon/Bitmap)
  60     if (actualSize.x == -1)
  61         actualSize.x = bitmap.IsOk() ? bitmap.GetWidth() : 1;
  62     if (actualSize.y == -1)
  63         actualSize.y = bitmap.IsOk() ? bitmap.GetHeight() : 1;
  64
  65     PostCreation();
  66     DoSetBitmap();
  67     AttachWidget (parent, m_mainWidget, (WXWidget) NULL,
  68                   pos.x, pos.y, actualSize.x, actualSize.y);
  69
  70     return true;
  71 }
  72
  73 wxStaticBitmap::~wxStaticBitmap()
  74 {
  75     SetBitmap(wxNullBitmap);
  76 }
  77
  78 void wxStaticBitmap::DoSetBitmap()
  79 {
  80     Widget widget = (Widget) m_mainWidget;
  81     int w2, h2;
  82
  83     if (m_messageBitmapOriginal.IsOk())
  84     {
  85         w2 = m_messageBitmapOriginal.GetWidth();
  86         h2 = m_messageBitmapOriginal.GetHeight();
  87
  88         Pixmap pixmap;
  89
  90         // Must re-make the bitmap to have its transparent areas drawn
  91         // in the current widget background colour.
  92         if (m_messageBitmapOriginal.GetMask())
  93         {
  94             WXPixel backgroundPixel;
  95             XtVaGetValues( widget, XmNbackground, &backgroundPixel,
  96                 NULL);
  97
  98             wxColour col;
  99             col.SetPixel(backgroundPixel);
 100
 101             wxBitmap newBitmap = wxCreateMaskedBitmap(m_messageBitmapOriginal, col);
 102             m_messageBitmap = newBitmap;
 103
 104             pixmap = (Pixmap) m_messageBitmap.GetDrawable();
 105         }
 106         else
 107         {
 108             m_bitmapCache.SetBitmap( m_messageBitmap );
 109             pixmap = (Pixmap)m_bitmapCache.GetLabelPixmap(widget);
 110         }
 111
 112         XtVaSetValues (widget,
 113             XmNlabelPixmap, pixmap,
 114             XmNlabelType, XmPIXMAP,
 115             NULL);
 116
 117         SetSize(w2, h2);
 118     }
 119     else
 120     {
 121         // Null bitmap: must not use current pixmap
 122         // since it is no longer valid.
 123         XtVaSetValues (widget,
 124             XmNlabelType, XmSTRING,
 125             XmNlabelPixmap, XmUNSPECIFIED_PIXMAP,
 126             NULL);
 127     }
 128 }
 129
 130 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 131 {
 132     m_messageBitmap = bitmap;
 133     m_messageBitmapOriginal = bitmap;
 134
 135     DoSetBitmap();
 136 }
 137
 138 void wxStaticBitmap::ChangeBackgroundColour()
 139 {
 140     wxWindow::ChangeBackgroundColour();
 141
 142     // must recalculate the background colour
 143     m_bitmapCache.SetColoursChanged();
 144     DoSetBitmap();
 145 }
 146
 147 void wxStaticBitmap::ChangeForegroundColour()
 148 {
 149     m_bitmapCache.SetColoursChanged();
 150     wxWindow::ChangeForegroundColour();
 151 }