1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation ([email protected])
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6 | **
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7 | ** This file is part of the examples of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:BSD$
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10 | ** You may use this file under the terms of the BSD license as follows:
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11 | **
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12 | ** "Redistribution and use in source and binary forms, with or without
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13 | ** modification, are permitted provided that the following conditions are
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14 | ** met:
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15 | ** * Redistributions of source code must retain the above copyright
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16 | ** notice, this list of conditions and the following disclaimer.
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17 | ** * Redistributions in binary form must reproduce the above copyright
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18 | ** notice, this list of conditions and the following disclaimer in
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19 | ** the documentation and/or other materials provided with the
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20 | ** distribution.
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21 | ** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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22 | ** the names of its contributors may be used to endorse or promote
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23 | ** products derived from this software without specific prior written
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24 | ** permission.
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25 | **
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26 | ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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27 | ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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28 | ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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29 | ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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30 | ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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31 | ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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32 | ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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33 | ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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34 | ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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35 | ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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36 | ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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37 | ** $QT_END_LICENSE$
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38 | **
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39 | ****************************************************************************/
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40 |
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41 | #include <QtGui>
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42 |
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43 | #include "draglabel.h"
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44 |
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45 | //! [0]
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46 | DragLabel::DragLabel(const QString &text, QWidget *parent)
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47 | : QLabel(parent)
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48 | {
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49 | QFontMetrics metric(font());
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50 | QSize size = metric.size(Qt::TextSingleLine, text);
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51 |
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52 | QImage image(size.width() + 12, size.height() + 12,
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53 | QImage::Format_ARGB32_Premultiplied);
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54 | image.fill(qRgba(0, 0, 0, 0));
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55 |
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56 | QFont font;
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57 | font.setStyleStrategy(QFont::ForceOutline);
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58 | //! [0]
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59 |
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60 | //! [1]
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61 | QLinearGradient gradient(0, 0, 0, image.height()-1);
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62 | gradient.setColorAt(0.0, Qt::white);
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63 | gradient.setColorAt(0.2, QColor(200, 200, 255));
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64 | gradient.setColorAt(0.8, QColor(200, 200, 255));
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65 | gradient.setColorAt(1.0, QColor(127, 127, 200));
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66 |
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67 | QPainter painter;
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68 | painter.begin(&image);
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69 | painter.setRenderHint(QPainter::Antialiasing);
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70 | painter.setBrush(gradient);
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71 | painter.drawRoundedRect(QRectF(0.5, 0.5, image.width()-1, image.height()-1),
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72 | 25, 25, Qt::RelativeSize);
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73 |
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74 | painter.setFont(font);
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75 | painter.setBrush(Qt::black);
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76 | painter.drawText(QRect(QPoint(6, 6), size), Qt::AlignCenter, text);
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77 | painter.end();
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78 | //! [1]
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79 |
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80 | //! [2]
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81 | setPixmap(QPixmap::fromImage(image));
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82 | m_labelText = text;
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83 | }
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84 | //! [2]
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85 |
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86 | QString DragLabel::labelText() const
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87 | {
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88 | return m_labelText;
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89 | }
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