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 demonstration applications 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 |
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42 | #include <qdeclarativeextensionplugin.h>
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43 |
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44 | #include <qdeclarativeengine.h>
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45 | #include <qdeclarative.h>
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46 | #include <qdeclarativeitem.h>
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47 | #include <qdeclarativeimageprovider.h>
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48 | #include <qdeclarativeview.h>
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49 | #include <QImage>
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50 | #include <QPainter>
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51 |
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52 | //![0]
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53 | class ColorImageProvider : public QDeclarativeImageProvider
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54 | {
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55 | public:
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56 | ColorImageProvider()
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57 | : QDeclarativeImageProvider(QDeclarativeImageProvider::Pixmap)
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58 | {
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59 | }
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60 |
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61 | QPixmap requestPixmap(const QString &id, QSize *size, const QSize &requestedSize)
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62 | {
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63 | int width = 100;
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64 | int height = 50;
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65 |
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66 | if (size)
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67 | *size = QSize(width, height);
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68 | QPixmap pixmap(requestedSize.width() > 0 ? requestedSize.width() : width,
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69 | requestedSize.height() > 0 ? requestedSize.height() : height);
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70 | pixmap.fill(QColor(id).rgba());
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71 | //![0]
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72 |
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73 | // write the color name
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74 | QPainter painter(&pixmap);
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75 | QFont f = painter.font();
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76 | f.setPixelSize(20);
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77 | painter.setFont(f);
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78 | painter.setPen(Qt::black);
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79 | if (requestedSize.isValid())
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80 | painter.scale(requestedSize.width() / width, requestedSize.height() / height);
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81 | painter.drawText(QRectF(0, 0, width, height), Qt::AlignCenter, id);
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82 |
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83 | //![1]
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84 | return pixmap;
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85 | }
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86 | };
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87 | //![1]
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88 |
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89 |
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90 | class ImageProviderExtensionPlugin : public QDeclarativeExtensionPlugin
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91 | {
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92 | Q_OBJECT
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93 | public:
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94 | void registerTypes(const char *uri)
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95 | {
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96 | Q_UNUSED(uri);
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97 | }
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98 |
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99 | void initializeEngine(QDeclarativeEngine *engine, const char *uri)
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100 | {
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101 | Q_UNUSED(uri);
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102 | engine->addImageProvider("colors", new ColorImageProvider);
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103 | }
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104 |
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105 | };
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106 |
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107 | #include "imageprovider.moc"
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108 |
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109 | Q_EXPORT_PLUGIN(ImageProviderExtensionPlugin);
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110 |
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