Initial import of the CDE 2.1.30 sources from the Open Group.

cde/programs/dtmail/MotifApp/BusyPixmap.C

@@ -0,0 +1,145 @@
+/* $XConsortium: BusyPixmap.C /main/3 1996/04/21 19:32:02 drk $ */
+/*
+ *+SNOTICE
+ *
+ *	RESTRICTED CONFIDENTIAL INFORMATION:
+ *	
+ *	The information in this document is subject to special
+ *	restrictions in a confidential disclosure agreement bertween
+ *	HP, IBM, Sun, USL, SCO and Univel.  Do not distribute this
+ *	document outside HP, IBM, Sun, USL, SCO, or Univel wihtout
+ *	Sun's specific written approval.  This documment and all copies
+ *	and derivative works thereof must be returned or destroyed at
+ *	Sun's request.
+ *
+ *	Copyright 1993 Sun Microsystems, Inc.  All rights reserved.
+ *
+ *+ENOTICE
+ */
+
+///////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+//         This example code is from the book:
+//
+//           Object-Oriented Programming with C++ and OSF/Motif
+//         by
+//           Douglas Young
+//           Prentice Hall, 1992
+//           ISBN 0-13-630252-1	
+//
+//         Copyright 1991 by Prentice Hall
+//         All Rights Reserved
+//
+//  Permission to use, copy, modify, and distribute this software for 
+//  any purpose except publication and without fee is hereby granted, provided 
+//  that the above copyright notice appear in all copies of the software.
+///////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+
+
+///////////////////////////////////////////////////
+// BusyPixmap.C
+///////////////////////////////////////////////////
+#include "BusyPixmap.h"
+#include <Xm/Xm.h>
+
+#define NUMPIXMAPS  8
+#define PIXMAPSIZE  50
+
+BusyPixmap::BusyPixmap ( Widget w ) : 
+        PixmapCycler ( NUMPIXMAPS, PIXMAPSIZE, PIXMAPSIZE )
+{
+    _w = w;
+}
+
+void BusyPixmap::createPixmaps()
+{
+    int angle, delta, i;
+    XGCValues  gcv;
+    
+    // Create a graphics context used to draw each pixmap,
+    // based on the colors of the given widget
+    
+    XtVaGetValues ( _w, 
+		   XmNforeground, &gcv.foreground,
+		   XmNbackground, &gcv.background,
+		   NULL );
+    
+    _gc = XtGetGC ( _w,  GCForeground | GCBackground, &gcv );
+    
+    // Create a second GC used to fill the pixmap with
+    // the background color of the widget
+    
+    XtVaGetValues ( _w, 
+		   XmNforeground, &gcv.background,
+		   XmNbackground, &gcv.foreground,
+		   NULL );
+    
+    _inverseGC = XtGetGC ( _w,  GCForeground | GCBackground, &gcv );
+    
+    // Define the starting increment, and a slice of the pie.
+    // The size of the pie slice depends on the number of pixmaps
+    // to be created.
+    
+    angle = 360;
+    delta = 360 / NUMPIXMAPS;
+    
+    for ( i = 0; i < NUMPIXMAPS; i++)
+    {
+	// Create a pixmap for each slice of the pie. X measures
+	// counterclockwise, so subtract the size of each slice
+	// so the sequence moves clockwise.
+	
+	_pixmapList[i] = createBusyPixmap ( angle, delta ); 
+	angle -= delta;
+    }
+    
+    // Release the GCs after all pixmaps have been created
+    
+    XtReleaseGC ( _w, _gc );
+    XtReleaseGC ( _w, _inverseGC );
+}
+
+Pixmap BusyPixmap::createBusyPixmap ( int    start, 
+				     int    end )
+{
+    Pixmap    pm;
+    const int margin = 1;
+    
+    // Create a pixmap. Use the root window used by the widget,
+    // because the widget may not be realized, or may be a gadget
+    
+    pm = XCreatePixmap ( XtDisplay ( _w ), 
+			RootWindowOfScreen ( XtScreen ( _w ) ),
+			_width, _height,
+			DefaultDepthOfScreen ( XtScreen ( _w ) ) );
+    
+    // Pixmaps have to be cleared by filling them with a background color
+    
+    XFillRectangle ( XtDisplay ( _w ), 
+		    pm, 
+		    _inverseGC, 
+		    0, 0, _width, _height );
+    
+    // Draw a complete circle just inside the bounds of the pxmap
+    
+    XDrawArc ( XtDisplay ( _w ), 
+	      pm,
+	      _gc, 
+	      margin, margin, 
+	      _width - 2 * margin, 
+	      _height - 2 * margin, 
+	      0, 360 * 64 );
+    
+    // Draw the pie slice as a solid color
+    
+    XFillArc ( XtDisplay ( _w ), 
+	      pm,
+	      _gc, 
+	      margin, margin, 
+	      _width - 2 * margin, 
+	      _height - 2 * margin, 
+	      start * 64, end * 64 );
+    
+    return pm;
+}