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| 1 | import sys | |
| 2 | from PyQt4 import QtGui, QtCore, Qt | |
| 3 | import math | |
| 4 | ||
| 5 | class Example(QtGui.QWidget): | |
| 6 | ||
| 7 | def __init__(self): | |
| 8 | super(Example, self).__init__() | |
| 9 | ||
| 10 | - | self.initUI() |
| 10 | + | self.setGeometry(0, 0,700,700) |
| 11 | self.move(300, 200) | |
| 12 | - | def initUI(self): |
| 12 | + | |
| 13 | ||
| 14 | - | hbox = QtGui.QHBoxLayout(self) |
| 14 | + | layout = QtGui.QVBoxLayout(self) |
| 15 | - | #dial = QtGui.QPixmap("speedo4.png")
|
| 15 | + | lbl = QtGui.QLabel("A Label")
|
| 16 | layout.addWidget(lbl) | |
| 17 | - | lbl = QtGui.QLabel(self) |
| 17 | + | |
| 18 | self.gauge = GaugeWidget(1.0) | |
| 19 | self.gauge.setSizePolicy(QtGui.QSizePolicy( | |
| 20 | - | hbox.addWidget(lbl) |
| 20 | + | QtGui.QSizePolicy.Expanding, |
| 21 | - | self.setLayout(hbox) |
| 21 | + | QtGui.QSizePolicy.Expanding)) |
| 22 | - | self.setGeometry(0, 0,600,600) |
| 22 | + | layout.addWidget(self.gauge) |
| 23 | ||
| 24 | ||
| 25 | class GaugeWidget(QtGui.QWidget): | |
| 26 | - | self.show() |
| 26 | + | |
| 27 | def __init__(self, initialValue=0, *args, **kwargs): | |
| 28 | super(GaugeWidget, self).__init__(*args, **kwargs) | |
| 29 | - | painter = QtGui.QPainter() |
| 29 | + | self._bg = QtGui.QPixmap("speedo4.png")
|
| 30 | - | painter.begin(self) |
| 30 | + | self.setValue(initialValue) |
| 31 | - | dial = QtGui.QPixmap("speedo4.png")
|
| 31 | + | |
| 32 | def setValue(self, val): | |
| 33 | - | #painter.drawPixmap(50, 50, 600, 600, dial) |
| 33 | + | val = float(min(max(val, 0), 1)) |
| 34 | self._value = -270 * val | |
| 35 | self.update() | |
| 36 | ||
| 37 | - | #rect = QtCore.QRect(50,50,600,600) |
| 37 | + | |
| 38 | painter = QtGui.QPainter(self) | |
| 39 | painter.setRenderHint(painter.Antialiasing) | |
| 40 | rect = e.rect() | |
| 41 | ||
| 42 | gauge_rect = QtCore.QRect(rect) | |
| 43 | size = gauge_rect.size() | |
| 44 | pos = gauge_rect.center() | |
| 45 | gauge_rect.moveCenter( QtCore.QPoint(pos.x()-size.width(), pos.y()-size.height()) ) | |
| 46 | gauge_rect.setSize(size*.9) | |
| 47 | gauge_rect.moveCenter(pos) | |
| 48 | ||
| 49 | refill_rect = QtCore.QRect(gauge_rect) | |
| 50 | size = refill_rect.size() | |
| 51 | pos = refill_rect.center() | |
| 52 | refill_rect.moveCenter( QtCore.QPoint(pos.x()-size.width(), pos.y()-size.height()) ) | |
| 53 | # smaller than .9 == thicker gauge | |
| 54 | refill_rect.setSize(size*.9) | |
| 55 | refill_rect.moveCenter(pos) | |
| 56 | - | painter.drawPixmap(rect, dial) |
| 56 | + | |
| 57 | painter.setPen(QtCore.Qt.NoPen) | |
| 58 | ||
| 59 | painter.drawPixmap(rect, self._bg ) | |
| 60 | ||
| 61 | painter.save() | |
| 62 | grad = QtGui.QConicalGradient(QtCore.QPointF(gauge_rect.center()), 270.0) | |
| 63 | grad.setColorAt(.75, QtCore.Qt.green) | |
| 64 | grad.setColorAt(.5, QtCore.Qt.yellow) | |
| 65 | - | painter.drawPie(gauge_rect, 225.0*16, -270*1*16) |
| 65 | + | |
| 66 | painter.setBrush(grad) | |
| 67 | #painter.drawPie(gauge_rect, 225.0*16, self._value*16) | |
| 68 | - | painter.setBrush(QtGui.QBrush(dial.scaled(rect.size()))) |
| 68 | + | painter.drawPie(gauge_rect, 225.0*16, self._value*16) |
| 69 | painter.restore() | |
| 70 | ||
| 71 | - | super(Example,self).paintEvent(e) |
| 71 | + | painter.setBrush(QtGui.QBrush(self._bg.scaled(rect.size()))) |
| 72 | painter.drawEllipse(refill_rect) | |
| 73 | - | |
| 73 | + | |
| 74 | painter.end() | |
| 75 | - | |
| 75 | + | super(GaugeWidget,self).paintEvent(e) |
| 76 | ||
| 77 | ||
| 78 | def main(): | |
| 79 | app = QtGui.QApplication(sys.argv) | |
| 80 | ex = Example() | |
| 81 | ex.show() | |
| 82 | ex.raise_() | |
| 83 | sys.exit(app.exec_()) | |
| 84 | ||
| 85 | ||
| 86 | if __name__ == '__main__': | |
| 87 | main() |
