| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** GNU Lesser General Public License Usage |
| ** This file may be used under the terms of the GNU Lesser General Public |
| ** License version 2.1 as published by the Free Software Foundation and |
| ** appearing in the file LICENSE.LGPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU Lesser |
| ** General Public License version 2.1 requirements will be met: |
| ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
| ** |
| ** In addition, as a special exception, Nokia gives you certain additional |
| ** rights. These rights are described in the Nokia Qt LGPL Exception |
| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU General |
| ** Public License version 3.0 as published by the Free Software Foundation |
| ** and appearing in the file LICENSE.GPL included in the packaging of this |
| ** file. Please review the following information to ensure the GNU General |
| ** Public License version 3.0 requirements will be met: |
| ** http://www.gnu.org/copyleft/gpl.html. |
| ** |
| ** Other Usage |
| ** Alternatively, this file may be used in accordance with the terms and |
| ** conditions contained in a signed written agreement between you and Nokia. |
| ** |
| ** |
| ** |
| ** |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <private/qt_x11_p.h> |
| |
| #include <limits.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| QRegion::QRegionData QRegion::shared_empty = {Q_BASIC_ATOMIC_INITIALIZER(1), 0, 0, 0}; |
| |
| void QRegion::updateX11Region() const |
| { |
| d->rgn = XCreateRegion(); |
| if (!d->qt_rgn) |
| return; |
| |
| int n = d->qt_rgn->numRects; |
| const QRect *rect = (n == 1 ? &d->qt_rgn->extents : d->qt_rgn->rects.constData()); |
| while (n--) { |
| XRectangle r; |
| r.x = qMax(SHRT_MIN, rect->x()); |
| r.y = qMax(SHRT_MIN, rect->y()); |
| r.width = qMin((int)USHRT_MAX, rect->width()); |
| r.height = qMin((int)USHRT_MAX, rect->height()); |
| XUnionRectWithRegion(&r, d->rgn, d->rgn); |
| ++rect; |
| } |
| } |
| |
| void *QRegion::clipRectangles(int &num) const |
| { |
| if (!d->xrectangles && !(d == &shared_empty || d->qt_rgn->numRects == 0)) { |
| XRectangle *r = static_cast<XRectangle*>(malloc(d->qt_rgn->numRects * sizeof(XRectangle))); |
| d->xrectangles = r; |
| int n = d->qt_rgn->numRects; |
| const QRect *rect = (n == 1 ? &d->qt_rgn->extents : d->qt_rgn->rects.constData()); |
| while (n--) { |
| r->x = qMax(SHRT_MIN, rect->x()); |
| r->y = qMax(SHRT_MIN, rect->y()); |
| r->width = qMin((int)USHRT_MAX, rect->width()); |
| r->height = qMin((int)USHRT_MAX, rect->height()); |
| ++r; |
| ++rect; |
| } |
| } |
| if (d == &shared_empty || d->qt_rgn->numRects == 0) |
| num = 0; |
| else |
| num = d->qt_rgn->numRects; |
| return d->xrectangles; |
| } |
| |
| QT_END_NAMESPACE |