170 lines
5.0 KiB
C
170 lines
5.0 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: BusyPixmap.C /main/3 1996/04/21 19:32:02 drk $ */
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/*
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*+SNOTICE
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*
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* RESTRICTED CONFIDENTIAL INFORMATION:
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*
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* The information in this document is subject to special
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* restrictions in a confidential disclosure agreement bertween
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* HP, IBM, Sun, USL, SCO and Univel. Do not distribute this
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* document outside HP, IBM, Sun, USL, SCO, or Univel wihtout
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* Sun's specific written approval. This documment and all copies
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* and derivative works thereof must be returned or destroyed at
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* Sun's request.
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*
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* Copyright 1993 Sun Microsystems, Inc. All rights reserved.
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*
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*+ENOTICE
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*/
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///////////////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////////////
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// This example code is from the book:
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//
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// Object-Oriented Programming with C++ and OSF/Motif
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// by
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// Douglas Young
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// Prentice Hall, 1992
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// ISBN 0-13-630252-1
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//
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// Copyright 1991 by Prentice Hall
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// All Rights Reserved
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//
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// Permission to use, copy, modify, and distribute this software for
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// any purpose except publication and without fee is hereby granted, provided
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// that the above copyright notice appear in all copies of the software.
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///////////////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////
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// BusyPixmap.C
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///////////////////////////////////////////////////
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#include "BusyPixmap.h"
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#include <Xm/Xm.h>
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#define NUMPIXMAPS 8
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#define PIXMAPSIZE 50
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BusyPixmap::BusyPixmap ( Widget w ) :
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PixmapCycler ( NUMPIXMAPS, PIXMAPSIZE, PIXMAPSIZE ),
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_gc(NULL),
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_inverseGC(NULL)
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{
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_w = w;
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}
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void BusyPixmap::createPixmaps()
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{
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int angle, delta, i;
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XGCValues gcv;
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// Create a graphics context used to draw each pixmap,
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// based on the colors of the given widget
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XtVaGetValues ( _w,
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XmNforeground, &gcv.foreground,
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XmNbackground, &gcv.background,
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NULL );
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_gc = XtGetGC ( _w, GCForeground | GCBackground, &gcv );
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// Create a second GC used to fill the pixmap with
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// the background color of the widget
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XtVaGetValues ( _w,
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XmNforeground, &gcv.background,
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XmNbackground, &gcv.foreground,
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NULL );
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_inverseGC = XtGetGC ( _w, GCForeground | GCBackground, &gcv );
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// Define the starting increment, and a slice of the pie.
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// The size of the pie slice depends on the number of pixmaps
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// to be created.
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angle = 360;
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delta = 360 / NUMPIXMAPS;
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for ( i = 0; i < NUMPIXMAPS; i++)
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{
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// Create a pixmap for each slice of the pie. X measures
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// counterclockwise, so subtract the size of each slice
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// so the sequence moves clockwise.
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_pixmapList[i] = createBusyPixmap ( angle, delta );
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angle -= delta;
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}
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// Release the GCs after all pixmaps have been created
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XtReleaseGC ( _w, _gc );
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XtReleaseGC ( _w, _inverseGC );
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}
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Pixmap BusyPixmap::createBusyPixmap ( int start,
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int end )
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{
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Pixmap pm;
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const int margin = 1;
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// Create a pixmap. Use the root window used by the widget,
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// because the widget may not be realized, or may be a gadget
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pm = XCreatePixmap ( XtDisplay ( _w ),
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RootWindowOfScreen ( XtScreen ( _w ) ),
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_width, _height,
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DefaultDepthOfScreen ( XtScreen ( _w ) ) );
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// Pixmaps have to be cleared by filling them with a background color
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XFillRectangle ( XtDisplay ( _w ),
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pm,
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_inverseGC,
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0, 0, _width, _height );
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// Draw a complete circle just inside the bounds of the pxmap
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XDrawArc ( XtDisplay ( _w ),
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pm,
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_gc,
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margin, margin,
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_width - 2 * margin,
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_height - 2 * margin,
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0, 360 * 64 );
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// Draw the pie slice as a solid color
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XFillArc ( XtDisplay ( _w ),
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pm,
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_gc,
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margin, margin,
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_width - 2 * margin,
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_height - 2 * margin,
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start * 64, end * 64 );
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return pm;
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}
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