tools/shared/qtgradienteditor/qtgradientmanager.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the tools applications of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "qtgradientmanager.h"
       
    43 #include <QtGui/QPixmap>
       
    44 #include <QtCore/QMetaEnum>
       
    45 
       
    46 QT_BEGIN_NAMESPACE
       
    47 
       
    48 QtGradientManager::QtGradientManager(QObject *parent)
       
    49     : QObject(parent)
       
    50 {
       
    51 }
       
    52 
       
    53 QMap<QString, QGradient> QtGradientManager::gradients() const
       
    54 {
       
    55     return m_idToGradient;
       
    56 }
       
    57 
       
    58 QString QtGradientManager::uniqueId(const QString &id) const
       
    59 {
       
    60     if (!m_idToGradient.contains(id))
       
    61         return id;
       
    62 
       
    63     QString base = id;
       
    64     while (base.count() > 0 && base.at(base.count() - 1).isDigit())
       
    65         base = base.left(base.count() - 1);
       
    66     QString newId = base;
       
    67     int counter = 0;
       
    68     while (m_idToGradient.contains(newId)) {
       
    69         ++counter;
       
    70         newId = base + QString::number(counter);
       
    71     }
       
    72     return newId;
       
    73 }
       
    74 
       
    75 QString QtGradientManager::addGradient(const QString &id, const QGradient &gradient)
       
    76 {
       
    77     QString newId = uniqueId(id);
       
    78 
       
    79     m_idToGradient[newId] = gradient;
       
    80 
       
    81     emit gradientAdded(newId, gradient);
       
    82 
       
    83     return newId;
       
    84 }
       
    85 
       
    86 void QtGradientManager::removeGradient(const QString &id)
       
    87 {
       
    88     if (!m_idToGradient.contains(id))
       
    89         return;
       
    90 
       
    91     emit gradientRemoved(id);
       
    92 
       
    93     m_idToGradient.remove(id);
       
    94 }
       
    95 
       
    96 void QtGradientManager::renameGradient(const QString &id, const QString &newId)
       
    97 {
       
    98     if (!m_idToGradient.contains(id))
       
    99         return;
       
   100 
       
   101     if (newId == id)
       
   102         return;
       
   103 
       
   104     QString changedId = uniqueId(newId);
       
   105     QGradient gradient = m_idToGradient.value(id);
       
   106 
       
   107     emit gradientRenamed(id, changedId);
       
   108 
       
   109     m_idToGradient.remove(id);
       
   110     m_idToGradient[changedId] = gradient;
       
   111 }
       
   112 
       
   113 void QtGradientManager::changeGradient(const QString &id, const QGradient &newGradient)
       
   114 {
       
   115     if (!m_idToGradient.contains(id))
       
   116         return;
       
   117 
       
   118     if (m_idToGradient.value(id) == newGradient)
       
   119         return;
       
   120 
       
   121     emit gradientChanged(id, newGradient);
       
   122 
       
   123     m_idToGradient[id] = newGradient;
       
   124 }
       
   125 
       
   126 void QtGradientManager::clear()
       
   127 {
       
   128     QMap<QString, QGradient> grads = gradients();
       
   129     QMapIterator<QString, QGradient> itGrad(grads);
       
   130     while (itGrad.hasNext()) {
       
   131         removeGradient(itGrad.next().key());
       
   132     }
       
   133 }
       
   134 
       
   135 QT_END_NAMESPACE