1 /*
2 * Copyright (c) 1996, 2005, 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 #include "awt_Brush.h"
27
28 GDIHashtable AwtBrush::cache("Brush cache", DeleteAwtBrush);
29
AwtBrush(COLORREF color)30 AwtBrush::AwtBrush(COLORREF color) {
31 if (!EnsureGDIObjectAvailability()) {
32 // If we've run out of GDI objects, don't try to create
33 // a new one
34 return;
35 }
36 SetColor(color);
37 HBRUSH brush = ::CreateSolidBrush(color);
38 /*
39 * Fix for BugTraq ID 4191297.
40 * If GDI resource creation failed flush all GDIHashtables
41 * to destroy unreferenced GDI resources.
42 */
43 if (brush == NULL) {
44 cache.flushAll();
45 brush = ::CreateSolidBrush(color);
46 }
47 DASSERT(brush != NULL);
48 SetHandle(brush);
49 if (brush == NULL) {
50 // We've already incremented the counter: decrement if
51 // creation failed
52 Decrement();
53 }
54 }
55
Get(COLORREF color)56 AwtBrush* AwtBrush::Get(COLORREF color) {
57
58 CriticalSection::Lock l(cache.getManagerLock());
59
60 AwtBrush* obj = static_cast<AwtBrush*>(cache.get(
61 reinterpret_cast<void*>(static_cast<INT_PTR>(color))));
62 if (obj == NULL) {
63 obj = new AwtBrush(color);
64 VERIFY(cache.put(reinterpret_cast<void*>(
65 static_cast<INT_PTR>(color)), obj) == NULL);
66 }
67 obj->IncrRefCount();
68 return obj;
69 }
70
ReleaseInCache()71 void AwtBrush::ReleaseInCache() {
72
73 CriticalSection::Lock l(cache.getManagerLock());
74
75 if (DecrRefCount() == 0) {
76 cache.release(reinterpret_cast<void*>(
77 static_cast<INT_PTR>(GetColor())));
78 }
79 }
80
DeleteAwtBrush(void * pBrush)81 void AwtBrush::DeleteAwtBrush(void* pBrush) {
82 delete (AwtBrush*)pBrush;
83 }
84