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Diffstat (limited to 'src/gui/kernel/qdirectionrecognizer.cpp')
| -rw-r--r-- | src/gui/kernel/qdirectionrecognizer.cpp | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/src/gui/kernel/qdirectionrecognizer.cpp b/src/gui/kernel/qdirectionrecognizer.cpp deleted file mode 100644 index a1bc5b1..0000000 --- a/src/gui/kernel/qdirectionrecognizer.cpp +++ /dev/null @@ -1,182 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Nokia Corporation (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 http://www.qtsoftware.com/contact. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qdirectionrecognizer_p.h" - -#include <math.h> - -#ifndef M_PI -#define M_PI 3.141592653589793238462643 -#endif - -QT_BEGIN_NAMESPACE - -enum { - DistanceDelta = 20 -}; - -QDirectionSimpleRecognizer::QDirectionSimpleRecognizer() -{ -} - -Direction QDirectionSimpleRecognizer::addPosition(const QPoint &pos) -{ - if (!directions.isEmpty()) { - const QPoint tmp = pos - directions.back().point; - if (tmp.manhattanLength() < 5) - return Direction(); - } - if (lastPoint.isNull()) { - lastPoint = pos; - return Direction(); - } - int dx = pos.x() - lastPoint.x(); - int dy = pos.y() - lastPoint.y(); - Qt::DirectionType direction = Qt::NoDirection; - if (dx < 0) { - if (-1*dx >= DistanceDelta/2) - direction = Qt::LeftDirection; - } else { - if (dx >= DistanceDelta/2) - direction = Qt::RightDirection; - } - if (dy < 0) { - if (-1*dy >= DistanceDelta/2) - direction = Qt::UpDirection; - } else { - if (dy >= DistanceDelta/2) - direction = Qt::DownDirection; - } - if (direction == Qt::NoDirection) - return Direction(); - - lastPoint = pos; - directions.push_back(Direction(direction, pos)); - return Direction(direction, pos); -} - - -DirectionList QDirectionSimpleRecognizer::getDirections() const -{ - return directions; -} - -void QDirectionSimpleRecognizer::reset() -{ - directions.clear(); - lastPoint = QPoint(); -} - - -/// QDirectionDiagonalRecognizer - -QDirectionDiagonalRecognizer::QDirectionDiagonalRecognizer() -{ -} - -Direction QDirectionDiagonalRecognizer::addPosition(const QPoint &pos) -{ - if (!directions.isEmpty()) { - const QPoint tmp = pos - directions.back().point; - if (tmp.manhattanLength() < 5) - return Direction(); - } - if (lastPoint.isNull()) { - lastPoint = pos; - return Direction(); - } - int dx = pos.x() - lastPoint.x(); - int dy = pos.y() - lastPoint.y(); - int distance = sqrt(static_cast<double>(dx*dx + dy*dy)); - if (distance < DistanceDelta/2) - return Direction(); - - Qt::DirectionType direction = Qt::NoDirection; - double angle = atan(1.0*qAbs(lastPoint.y() - pos.y())/qAbs(pos.x() - lastPoint.x())) * 180. / M_PI; - if (dx < 0 && dy <= 0) { - angle = 180 - angle; - } else if (dx <= 0 && dy > 0) { - angle += 180; - } else if (dx > 0 && dy > 0) { - angle = 360-angle; - } - if (angle < 0) - angle += 360; - if (angle <= 20) - direction = Qt::RightDirection; - else if (angle <= 65) - direction = Qt::RightUpDirection; - else if (angle <= 110) - direction = Qt::UpDirection; - else if (angle <= 155) - direction = Qt::LeftUpDirection; - else if (angle <= 200) - direction = Qt::LeftDirection; - else if (angle <= 245) - direction = Qt::LeftDownDirection; - else if (angle <= 290) - direction = Qt::DownDirection; - else if (angle <= 335) - direction = Qt::RightDownDirection; - else - direction = Qt::RightDirection; - - if (direction == Qt::NoDirection) - return Direction(); - - lastPoint = pos; - directions.push_back(Direction(direction, pos)); - return Direction(direction, pos); -} - - -DirectionList QDirectionDiagonalRecognizer::getDirections() const -{ - return directions; -} - -void QDirectionDiagonalRecognizer::reset() -{ - directions.clear(); - lastPoint = QPoint(); -} - -QT_END_NAMESPACE |