| /**************************************************************************** |
| ** |
| ** 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 "qatomic.h" |
| #include "qbitmap.h" |
| #include "qbuffer.h" |
| #include "qimage.h" |
| #include "qpolygon.h" |
| #include "qregion.h" |
| #include "qt_windows.h" |
| #include "qpainterpath.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| QRegion::QRegionData QRegion::shared_empty = { Q_BASIC_ATOMIC_INITIALIZER(1), 0, 0 }; |
| |
| HRGN qt_tryCreateRegion(QRegion::RegionType type, int left, int top, int right, int bottom) |
| { |
| const int tries = 10; |
| for (int i = 0; i < tries; ++i) { |
| HRGN region = 0; |
| switch (type) { |
| case QRegion::Rectangle: |
| region = CreateRectRgn(left, top, right, bottom); |
| break; |
| case QRegion::Ellipse: |
| #ifndef Q_OS_WINCE |
| region = CreateEllipticRgn(left, top, right, bottom); |
| #endif |
| break; |
| } |
| if (region) { |
| if (GetRegionData(region, 0, 0)) |
| return region; |
| else |
| DeleteObject(region); |
| } |
| } |
| return 0; |
| } |
| |
| QRegion qt_region_from_HRGN(HRGN rgn) |
| { |
| int numBytes = GetRegionData(rgn, 0, 0); |
| if (numBytes == 0) |
| return QRegion(); |
| |
| char *buf = new char[numBytes]; |
| if (buf == 0) |
| return QRegion(); |
| |
| RGNDATA *rd = reinterpret_cast<RGNDATA*>(buf); |
| if (GetRegionData(rgn, numBytes, rd) == 0) { |
| delete [] buf; |
| return QRegion(); |
| } |
| |
| QRegion region; |
| RECT *r = reinterpret_cast<RECT*>(rd->Buffer); |
| for (uint i = 0; i < rd->rdh.nCount; ++i) { |
| QRect rect; |
| rect.setCoords(r->left, r->top, r->right - 1, r->bottom - 1); |
| ++r; |
| region |= rect; |
| } |
| |
| delete [] buf; |
| |
| return region; |
| } |
| |
| void qt_win_dispose_rgn(HRGN r) |
| { |
| if (r) |
| DeleteObject(r); |
| } |
| |
| static void qt_add_rect(HRGN &winRegion, QRect r) |
| { |
| HRGN rgn = CreateRectRgn(r.left(), r.top(), r.x() + r.width(), r.y() + r.height()); |
| if (rgn) { |
| HRGN dest = CreateRectRgn(0,0,0,0); |
| int result = CombineRgn(dest, winRegion, rgn, RGN_OR); |
| if (result) { |
| DeleteObject(winRegion); |
| winRegion = dest; |
| } |
| DeleteObject(rgn); |
| } |
| } |
| |
| void QRegion::ensureHandle() const |
| { |
| if (d->rgn) |
| DeleteObject(d->rgn); |
| d->rgn = CreateRectRgn(0,0,0,0); |
| if (d->qt_rgn) { |
| if (d->qt_rgn->numRects == 1) { |
| QRect r = d->qt_rgn->extents; |
| qt_add_rect(d->rgn, r); |
| return; |
| } |
| for (int i = 0;i < d->qt_rgn->numRects;i++) { |
| QRect r = d->qt_rgn->rects.at(i); |
| qt_add_rect(d->rgn, r); |
| } |
| } |
| } |
| |
| |
| QT_END_NAMESPACE |