[2] | 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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[561] | 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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[2] | 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 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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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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[561] | 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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[2] | 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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[561] | 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at [email protected].
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[2] | 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #ifndef GRADIENTS_H
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| 43 | #define GRADIENTS_H
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| 44 |
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| 45 | #include "arthurwidgets.h"
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| 46 |
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| 47 | #include <QtGui>
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| 48 |
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| 49 | class HoverPoints;
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| 50 |
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| 51 |
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| 52 | class ShadeWidget : public QWidget
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| 53 | {
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| 54 | Q_OBJECT
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| 55 | public:
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| 56 | enum ShadeType {
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| 57 | RedShade,
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| 58 | GreenShade,
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| 59 | BlueShade,
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| 60 | ARGBShade
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| 61 | };
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| 62 |
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| 63 | ShadeWidget(ShadeType type, QWidget *parent);
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| 64 |
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| 65 | void setGradientStops(const QGradientStops &stops);
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| 66 |
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| 67 | void paintEvent(QPaintEvent *e);
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| 68 |
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| 69 | QSize sizeHint() const { return QSize(150, 40); }
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| 70 | QPolygonF points() const;
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| 71 |
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| 72 | HoverPoints *hoverPoints() const { return m_hoverPoints; }
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| 73 |
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| 74 | uint colorAt(int x);
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| 75 |
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| 76 | signals:
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| 77 | void colorsChanged();
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| 78 |
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| 79 | private:
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| 80 | void generateShade();
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| 81 |
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| 82 | ShadeType m_shade_type;
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| 83 | QImage m_shade;
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| 84 | HoverPoints *m_hoverPoints;
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| 85 | QLinearGradient m_alpha_gradient;
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| 86 | };
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| 87 |
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| 88 | class GradientEditor : public QWidget
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| 89 | {
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| 90 | Q_OBJECT
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| 91 | public:
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| 92 | GradientEditor(QWidget *parent);
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| 93 |
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| 94 | void setGradientStops(const QGradientStops &stops);
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| 95 |
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| 96 | public slots:
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| 97 | void pointsUpdated();
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| 98 |
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| 99 | signals:
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| 100 | void gradientStopsChanged(const QGradientStops &stops);
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| 101 |
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| 102 | private:
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| 103 | ShadeWidget *m_red_shade;
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| 104 | ShadeWidget *m_green_shade;
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| 105 | ShadeWidget *m_blue_shade;
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| 106 | ShadeWidget *m_alpha_shade;
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| 107 | };
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| 108 |
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| 109 |
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| 110 | class GradientRenderer : public ArthurFrame
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| 111 | {
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| 112 | Q_OBJECT
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| 113 | public:
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| 114 | GradientRenderer(QWidget *parent);
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| 115 | void paint(QPainter *p);
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| 116 |
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| 117 | QSize sizeHint() const { return QSize(400, 400); }
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| 118 |
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| 119 | HoverPoints *hoverPoints() const { return m_hoverPoints; }
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| 120 | void mousePressEvent(QMouseEvent *e);
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| 121 |
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| 122 | public slots:
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| 123 | void setGradientStops(const QGradientStops &stops);
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| 124 |
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| 125 | void setPadSpread() { m_spread = QGradient::PadSpread; update(); }
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| 126 | void setRepeatSpread() { m_spread = QGradient::RepeatSpread; update(); }
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| 127 | void setReflectSpread() { m_spread = QGradient::ReflectSpread; update(); }
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| 128 |
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| 129 | void setLinearGradient() { m_gradientType = Qt::LinearGradientPattern; update(); }
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| 130 | void setRadialGradient() { m_gradientType = Qt::RadialGradientPattern; update(); }
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| 131 | void setConicalGradient() { m_gradientType = Qt::ConicalGradientPattern; update(); }
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| 132 |
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| 133 |
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| 134 | private:
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| 135 | QGradientStops m_stops;
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| 136 | HoverPoints *m_hoverPoints;
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| 137 |
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| 138 | QGradient::Spread m_spread;
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| 139 | Qt::BrushStyle m_gradientType;
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| 140 | };
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| 141 |
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| 142 |
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| 143 | class GradientWidget : public QWidget
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| 144 | {
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| 145 | Q_OBJECT
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| 146 | public:
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| 147 | GradientWidget(QWidget *parent);
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| 148 |
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| 149 | public slots:
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| 150 | void setDefault1() { setDefault(1); }
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| 151 | void setDefault2() { setDefault(2); }
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| 152 | void setDefault3() { setDefault(3); }
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| 153 | void setDefault4() { setDefault(4); }
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| 154 |
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| 155 | private:
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| 156 | void setDefault(int i);
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| 157 |
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| 158 | GradientRenderer *m_renderer;
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| 159 | GradientEditor *m_editor;
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| 160 |
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| 161 | QRadioButton *m_linearButton;
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| 162 | QRadioButton *m_radialButton;
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| 163 | QRadioButton *m_conicalButton;
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| 164 | QRadioButton *m_padSpreadButton;
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| 165 | QRadioButton *m_reflectSpreadButton;
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| 166 | QRadioButton *m_repeatSpreadButton;
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| 167 |
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| 168 | };
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| 169 |
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| 170 | #endif // GRADIENTS_H
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