1 /* 2 * Copyright (c) 1996, 1999, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #ifndef AWT_PEN_H 27 #define AWT_PEN_H 28 29 #include "awt_GDIObject.h" 30 #include "GDIHashtable.h" 31 32 /* 33 * An AwtPen is a cached Windows pen. 34 */ 35 class AwtPen : public AwtGDIObject { 36 public: 37 /* 38 * Get a GDI object from its respective cache. If it doesn't exist 39 * it gets created, otherwise its reference count gets bumped. 40 */ 41 static AwtPen* Get(COLORREF color); 42 43 // Delete an AwtPen, called by Hashtable.clear(). 44 static void DeleteAwtPen(void* pPen); 45 46 protected: 47 /* 48 * Decrement the reference count of a cached GDI object. When it hits 49 * zero, notify the cache that the object can be safely removed. 50 * The cache will eventually delete the GDI object and this wrapper. 51 */ 52 virtual void ReleaseInCache(); 53 54 private: 55 AwtPen(COLORREF color); ~AwtPen()56 ~AwtPen() {} 57 58 static GDIHashtable cache; 59 }; 60 61 #endif // AWT_PEN_H 62