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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
commite5fcad302d86d316390c6b0f62759a067313e8a9 (patch)
treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /src/gui/painting/qregion_x11.cpp
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Long live Qt 4.5!
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1 files changed, 92 insertions, 0 deletions
diff --git a/src/gui/painting/qregion_x11.cpp b/src/gui/painting/qregion_x11.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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