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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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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 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "headingitem.h" |
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43 #include "colors.h" |
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44 |
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45 HeadingItem::HeadingItem(const QString &text, QGraphicsScene *scene, QGraphicsItem *parent) |
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46 : DemoItem(scene, parent) |
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47 { |
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48 this->text = text; |
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49 this->noSubPixeling = true; |
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50 } |
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51 |
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52 QImage *HeadingItem::createImage(const QMatrix &matrix) const |
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53 { |
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54 float sx = qMin(matrix.m11(), matrix.m22()); |
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55 float sy = matrix.m22() < sx ? sx : matrix.m22(); |
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56 QFontMetrics fm(Colors::headingFont()); |
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57 |
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58 float w = fm.width(this->text) + 1; |
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59 float h = fm.height(); |
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60 float xShadow = 3.0f; |
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61 float yShadow = 3.0f; |
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62 |
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63 QImage *image = new QImage(int((w + xShadow) * sx), int((h + yShadow) * sy), QImage::Format_ARGB32_Premultiplied); |
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64 image->fill(QColor(0, 0, 0, 0).rgba()); |
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65 QPainter painter(image); |
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66 painter.setFont(Colors::headingFont()); |
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67 painter.scale(sx, sy); |
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68 |
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69 //draw shadow |
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70 QLinearGradient brush_shadow(xShadow, yShadow, w, yShadow); |
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71 brush_shadow.setSpread(QLinearGradient::PadSpread); |
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72 if (Colors::useEightBitPalette) |
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73 brush_shadow.setColorAt(0.0f, QColor(0, 0, 0)); |
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74 else |
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75 brush_shadow.setColorAt(0.0f, QColor(0, 0, 0, 100)); |
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76 QPen pen_shadow; |
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77 pen_shadow.setBrush(brush_shadow); |
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78 painter.setPen(pen_shadow); |
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79 painter.drawText(int(xShadow), int(yShadow), int(w), int(h), Qt::AlignLeft, this->text); |
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80 |
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81 // draw text |
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82 QLinearGradient brush_text(0, 0, w, w); |
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83 brush_text.setSpread(QLinearGradient::PadSpread); |
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84 brush_text.setColorAt(0.0f, QColor(255, 255, 255)); |
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85 brush_text.setColorAt(0.2f, QColor(255, 255, 255)); |
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86 brush_text.setColorAt(0.5f, QColor(190, 190, 190)); |
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87 QPen pen_text; |
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88 pen_text.setBrush(brush_text); |
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89 painter.setPen(pen_text); |
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90 painter.drawText(0, 0, int(w), int(h), Qt::AlignLeft, this->text); |
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91 return image; |
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92 } |
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93 |
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94 |
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95 void HeadingItem::animationStarted(int) |
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96 { |
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97 this->noSubPixeling = false; |
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98 } |
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99 |
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100 |
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101 void HeadingItem::animationStopped(int) |
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102 { |
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103 this->noSubPixeling = true; |
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104 } |