/*
* Copyright (c) 1996, 2005, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "awt_Brush.h"
GDIHashtable AwtBrush::cache("Brush cache", DeleteAwtBrush);
AwtBrush::AwtBrush(COLORREF color) {
if (!EnsureGDIObjectAvailability()) {
// If we've run out of GDI objects, don't try to create
// a new one
return;
}
SetColor(color);
HBRUSH brush = ::CreateSolidBrush(color);
/*
* Fix for BugTraq ID 4191297.
* If GDI resource creation failed flush all GDIHashtables
* to destroy unreferenced GDI resources.
*/
if (brush == NULL) {
cache.flushAll();
brush = ::CreateSolidBrush(color);
}
DASSERT(brush != NULL);
SetHandle(brush);
if (brush == NULL) {
// We've already incremented the counter: decrement if
// creation failed
Decrement();
}
}
AwtBrush* AwtBrush::Get(COLORREF color) {
CriticalSection::Lock l(cache.getManagerLock());
AwtBrush* obj = static_cast<AwtBrush*>(cache.get(
reinterpret_cast<void*>(static_cast<INT_PTR>(color))));
if (obj == NULL) {
obj = new AwtBrush(color);
VERIFY(cache.put(reinterpret_cast<void*>(
static_cast<INT_PTR>(color)), obj) == NULL);
}
obj->IncrRefCount();
return obj;
}
void AwtBrush::ReleaseInCache() {
CriticalSection::Lock l(cache.getManagerLock());
if (DecrRefCount() == 0) {
cache.release(reinterpret_cast<void*>(
static_cast<INT_PTR>(GetColor())));
}
}
void AwtBrush::DeleteAwtBrush(void* pBrush) {
delete (AwtBrush*)pBrush;
}