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    41 

    42 #ifndef GRADIENTS_H

    43 #define GRADIENTS_H

    44 

    45 #include "arthurwidgets.h"

    46 

    47 #include <QtGui>

    48 

    49 class HoverPoints;

    50 

    51 

    52 class ShadeWidget : public QWidget

    53 {

    54     Q_OBJECT

    55 public:

    56     enum ShadeType {

    57         RedShade,

    58         GreenShade,

    59         BlueShade,

    60         ARGBShade

    61     };

    62 

    63     ShadeWidget(ShadeType type, QWidget *parent);

    64 

    65     void setGradientStops(const QGradientStops &stops);

    66 

    67     void paintEvent(QPaintEvent *e);

    68 

    69     QSize sizeHint() const { return QSize(150, 40); }

    70     QPolygonF points() const;

    71 

    72     HoverPoints *hoverPoints() const { return m_hoverPoints; }

    73 

    74     uint colorAt(int x);

    75 

    76 signals:

    77     void colorsChanged();

    78 

    79 private:

    80     void generateShade();

    81 

    82     ShadeType m_shade_type;

    83     QImage m_shade;

    84     HoverPoints *m_hoverPoints;

    85     QLinearGradient m_alpha_gradient;

    86 };

    87 

    88 class GradientEditor : public QWidget

    89 {

    90     Q_OBJECT

    91 public:

    92     GradientEditor(QWidget *parent);

    93 

    94     void setGradientStops(const QGradientStops &stops);

    95 

    96 public slots:

    97     void pointsUpdated();

    98 

    99 signals:

   100     void gradientStopsChanged(const QGradientStops &stops);

   101 

   102 private:

   103     ShadeWidget *m_red_shade;

   104     ShadeWidget *m_green_shade;

   105     ShadeWidget *m_blue_shade;

   106     ShadeWidget *m_alpha_shade;

   107 };

   108 

   109 

   110 class GradientRenderer : public ArthurFrame

   111 {

   112     Q_OBJECT

   113 public:

   114     GradientRenderer(QWidget *parent);

   115     void paint(QPainter *p);

   116 

   117     QSize sizeHint() const { return QSize(400, 400); }

   118 

   119     HoverPoints *hoverPoints() const { return m_hoverPoints; }

   120     void mousePressEvent(QMouseEvent *e);

   121 

   122 public slots:

   123     void setGradientStops(const QGradientStops &stops);

   124 

   125     void setPadSpread() { m_spread = QGradient::PadSpread; update(); }

   126     void setRepeatSpread() { m_spread = QGradient::RepeatSpread; update(); }

   127     void setReflectSpread() { m_spread = QGradient::ReflectSpread; update(); }

   128 

   129     void setLinearGradient() { m_gradientType = Qt::LinearGradientPattern; update(); }

   130     void setRadialGradient() { m_gradientType = Qt::RadialGradientPattern; update(); }

   131     void setConicalGradient() { m_gradientType = Qt::ConicalGradientPattern; update(); }

   132 

   133 

   134 private:

   135     QGradientStops m_stops;

   136     HoverPoints *m_hoverPoints;

   137 

   138     QGradient::Spread m_spread;

   139     Qt::BrushStyle m_gradientType;

   140 };

   141 

   142 

   143 class GradientWidget : public QWidget

   144 {

   145     Q_OBJECT

   146 public:

   147     GradientWidget(QWidget *parent);

   148 

   149 public slots:

   150     void setDefault1() { setDefault(1); }

   151     void setDefault2() { setDefault(2); }

   152     void setDefault3() { setDefault(3); }

   153     void setDefault4() { setDefault(4); }

   154 

   155 private:

   156     void setDefault(int i);

   157 

   158     GradientRenderer *m_renderer;

   159     GradientEditor *m_editor;

   160 

   161     QRadioButton *m_linearButton;

   162     QRadioButton *m_radialButton;

   163     QRadioButton *m_conicalButton;

   164     QRadioButton *m_padSpreadButton;

   165     QRadioButton *m_reflectSpreadButton;

   166     QRadioButton *m_repeatSpreadButton;

   167 

   168 };

   169 

   170 #endif // GRADIENTS_H