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 #ifdef __GNUG__
  13 #pragma implementation "statbmp.h"
  14 #endif
  15
  16 #include "wx/defs.h"
  17
  18 #include "wx/statbmp.h"
  19
  20 #ifdef __VMS__
  21 #pragma message disable nosimpint
  22 #endif
  23 #include <Xm/Xm.h>
  24 #include <Xm/Label.h>
  25 #include <Xm/LabelG.h>
  26 #include <Xm/RowColumn.h>
  27 #ifdef __VMS__
  28 #pragma message enable nosimpint
  29 #endif
  30
  31 #include "wx/motif/private.h"
  32
  33 IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
  34
  35 /*
  36  * wxStaticBitmap
  37  */
  38
  39 bool wxStaticBitmap::Create(wxWindow *parent, wxWindowID id,
  40            const wxBitmap& bitmap,
  41            const wxPoint& pos,
  42            const wxSize& size,
  43            long style,
  44            const wxString& name)
  45 {
  46     m_messageBitmap = bitmap;
  47     m_messageBitmapOriginal = bitmap;
  48     SetName(name);
  49     m_backgroundColour = parent->GetBackgroundColour();
  50     m_foregroundColour = parent->GetForegroundColour();
  51     if (parent) parent->AddChild(this);
  52
  53     if ( id == -1 )
  54         m_windowId = (int)NewControlId();
  55     else
  56         m_windowId = id;
  57
  58     m_windowStyle = style;
  59
  60     Widget parentWidget = (Widget) parent->GetClientWidget();
  61
  62     m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("staticBitmap",
  63 #if USE_GADGETS
  64                     xmLabelGadgetClass, parentWidget,
  65 #else
  66                     xmLabelWidgetClass, parentWidget,
  67 #endif
  68                     XmNalignment, XmALIGNMENT_BEGINNING,
  69                     NULL);
  70
  71     ChangeBackgroundColour ();
  72
  73     DoSetBitmap();
  74
  75     m_font = parent->GetFont();
  76     ChangeFont(FALSE);
  77
  78     SetCanAddEventHandler(TRUE);
  79
  80     wxSize actualSize(size);
  81     // work around the cases where the bitmap is a wxNull(Icon/Bitmap)
  82     if (actualSize.x == -1)
  83         actualSize.x = bitmap.GetWidth() ? bitmap.GetWidth() : 1;
  84     if (actualSize.y == -1)
  85         actualSize.y = bitmap.GetHeight() ? bitmap.GetHeight() : 1;
  86     AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, actualSize.x, actualSize.y);
  87
  88     return TRUE;
  89 }
  90
  91 wxStaticBitmap::~wxStaticBitmap()
  92 {
  93     SetBitmap(wxNullBitmap);
  94 }
  95
  96 void wxStaticBitmap::DoSetBitmap()
  97 {
  98     Widget widget = (Widget) m_mainWidget;
  99     int x, y, w1, h1, w2, h2;
 100
 101     GetPosition(&x, &y);
 102
 103     if (m_messageBitmapOriginal.Ok())
 104     {
 105         w2 = m_messageBitmapOriginal.GetWidth();
 106         h2 = m_messageBitmapOriginal.GetHeight();
 107
 108         Pixmap pixmap;
 109
 110         // Must re-make the bitmap to have its transparent areas drawn
 111         // in the current widget background colour.
 112         if (m_messageBitmapOriginal.GetMask())
 113         {
 114             int backgroundPixel;
 115             XtVaGetValues( widget, XmNbackground, &backgroundPixel,
 116                 NULL);
 117
 118             wxColour col;
 119             col.SetPixel(backgroundPixel);
 120
 121             wxBitmap newBitmap = wxCreateMaskedBitmap(m_messageBitmapOriginal, col);
 122             m_messageBitmap = newBitmap;
 123
 124             pixmap = (Pixmap) m_messageBitmap.GetDrawable();
 125         }
 126         else
 127         {
 128             m_bitmapCache.SetBitmap( m_messageBitmap );
 129             pixmap = (Pixmap)m_bitmapCache.GetLabelPixmap(widget);
 130         }
 131
 132         XtVaSetValues (widget,
 133             XmNlabelPixmap, pixmap,
 134             XmNlabelType, XmPIXMAP,
 135             NULL);
 136         GetSize(&w1, &h1);
 137
 138         if (! (w1 == w2) && (h1 == h2))
 139             SetSize(x, y, w2, h2);
 140     }
 141     else
 142     {
 143         // Null bitmap: must not use current pixmap
 144         // since it is no longer valid.
 145         XtVaSetValues (widget,
 146             XmNlabelType, XmSTRING,
 147             XmNlabelPixmap, XmUNSPECIFIED_PIXMAP,
 148             NULL);
 149     }
 150 }
 151
 152 void wxStaticBitmap::SetBitmap(const wxBitmap& bitmap)
 153 {
 154     m_messageBitmap = bitmap;
 155     m_messageBitmapOriginal = bitmap;
 156
 157     DoSetBitmap();
 158 }
 159
 160 void wxStaticBitmap::ChangeFont(bool keepOriginalSize)
 161 {
 162     wxWindow::ChangeFont(keepOriginalSize);
 163 }
 164
 165 void wxStaticBitmap::ChangeBackgroundColour()
 166 {
 167     wxWindow::ChangeBackgroundColour();
 168
 169     // must recalculate the background colour
 170     m_bitmapCache.SetColoursChanged();
 171     DoSetBitmap();
 172 }
 173
 174 void wxStaticBitmap::ChangeForegroundColour()
 175 {
 176     m_bitmapCache.SetColoursChanged();
 177     wxWindow::ChangeForegroundColour();
 178 }
 179