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36 | |
37 | #include "qquickfusiondial_p.h" |
38 | |
39 | #include <QtGui/qpainter.h> |
40 | #include <QtGui/private/qmath_p.h> |
41 | |
42 | QT_BEGIN_NAMESPACE |
43 | |
44 | QQuickFusionDial::QQuickFusionDial(QQuickItem *parent) |
45 | : QQuickPaintedItem(parent) |
46 | { |
47 | } |
48 | |
49 | bool QQuickFusionDial::highlight() const |
50 | { |
51 | return m_highlight; |
52 | } |
53 | |
54 | void QQuickFusionDial::setHighlight(bool highlight) |
55 | { |
56 | if (m_highlight == highlight) |
57 | return; |
58 | |
59 | m_highlight = highlight; |
60 | update(); |
61 | } |
62 | |
63 | QPalette QQuickFusionDial::palette() const |
64 | { |
65 | return m_palette; |
66 | } |
67 | |
68 | void QQuickFusionDial::setPalette(const QPalette &palette) |
69 | { |
70 | if (palette == m_palette) |
71 | return; |
72 | |
73 | m_palette = palette; |
74 | update(); |
75 | } |
76 | |
77 | // based on QStyleHelper::drawDial() |
78 | void QQuickFusionDial::paint(QPainter *painter) |
79 | { |
80 | const int width = QQuickItem::width(); |
81 | const int height = QQuickItem::height(); |
82 | if (width <= 0 || height <= 0 || !isVisible()) |
83 | return; |
84 | |
85 | QColor buttonColor = m_palette.button().color(); |
86 | const bool enabled = isEnabled(); |
87 | qreal r = qMin(a: width, b: height) / 2.0; |
88 | r -= r/50; |
89 | const qreal penSize = r/20.0; |
90 | |
91 | painter->setRenderHint(hint: QPainter::Antialiasing); |
92 | |
93 | const qreal d_ = r / 6; |
94 | const qreal dx = d_ + (width - 2 * r) / 2 + 1; |
95 | const qreal dy = d_ + (height - 2 * r) / 2 + 1; |
96 | |
97 | QRectF br = QRectF(dx + 0.5, dy + 0.5, |
98 | int(r * 2 - 2 * d_ - 2), |
99 | int(r * 2 - 2 * d_ - 2)); |
100 | buttonColor.setHsv(h: buttonColor .hue(), |
101 | s: qMin(a: 140, b: buttonColor .saturation()), |
102 | v: qMax(a: 180, b: buttonColor.value())); |
103 | |
104 | if (enabled) { |
105 | // Drop shadow |
106 | qreal shadowSize = qMax(a: 1.0, b: penSize/2.0); |
107 | QRectF shadowRect= br.adjusted(xp1: -2*shadowSize, yp1: -2*shadowSize, |
108 | xp2: 2*shadowSize, yp2: 2*shadowSize); |
109 | QRadialGradient shadowGradient(shadowRect.center().x(), |
110 | shadowRect.center().y(), shadowRect.width()/2.0, |
111 | shadowRect.center().x(), shadowRect.center().y()); |
112 | shadowGradient.setColorAt(pos: qreal(0.91), color: QColor(0, 0, 0, 40)); |
113 | shadowGradient.setColorAt(pos: qreal(1.0), color: Qt::transparent); |
114 | painter->setBrush(shadowGradient); |
115 | painter->setPen(Qt::NoPen); |
116 | painter->translate(dx: shadowSize, dy: shadowSize); |
117 | painter->drawEllipse(r: shadowRect); |
118 | painter->translate(dx: -shadowSize, dy: -shadowSize); |
119 | |
120 | // Main gradient |
121 | QRadialGradient gradient(br.center().x() - br.width()/3, dy, |
122 | br.width()*1.3, br.center().x(), |
123 | br.center().y() - br.height()/2); |
124 | gradient.setColorAt(pos: 0, color: buttonColor.lighter(f: 110)); |
125 | gradient.setColorAt(pos: qreal(0.5), color: buttonColor); |
126 | gradient.setColorAt(pos: qreal(0.501), color: buttonColor.darker(f: 102)); |
127 | gradient.setColorAt(pos: 1, color: buttonColor.darker(f: 115)); |
128 | painter->setBrush(gradient); |
129 | } else { |
130 | painter->setBrush(Qt::NoBrush); |
131 | } |
132 | |
133 | painter->setPen(QPen(buttonColor.darker(f: 280))); |
134 | painter->drawEllipse(r: br); |
135 | painter->setBrush(Qt::NoBrush); |
136 | painter->setPen(buttonColor.lighter(f: 110)); |
137 | painter->drawEllipse(r: br.adjusted(xp1: 1, yp1: 1, xp2: -1, yp2: -1)); |
138 | |
139 | if (m_highlight) { |
140 | QColor highlight = m_palette.highlight().color(); |
141 | highlight.setHsv(h: highlight.hue(), |
142 | s: qMin(a: 160, b: highlight.saturation()), |
143 | v: qMax(a: 230, b: highlight.value())); |
144 | highlight.setAlpha(127); |
145 | painter->setPen(QPen(highlight, 2.0)); |
146 | painter->setBrush(Qt::NoBrush); |
147 | painter->drawEllipse(r: br.adjusted(xp1: -1, yp1: -1, xp2: 1, yp2: 1)); |
148 | } |
149 | } |
150 | |
151 | QT_END_NAMESPACE |
152 | |