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#!/usr/bin/env python
import os, sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class CustomWidget(QWidget):
def __init__(self, parent, fake = False):
QWidget.__init__(self, parent)
gradient = QLinearGradient(QPointF(0, 0), QPointF(100.0, 100.0))
baseColor = QColor(0xa6, 0xce, 0x39, 0x7f)
gradient.setColorAt(0.0, baseColor.light(150))
gradient.setColorAt(0.75, baseColor.light(75))
self.brush = QBrush(gradient)
self.fake = fake
self.fakeBrush = QBrush(Qt.red, Qt.DiagCrossPattern)
qtPath = QPainterPath()
qtPath.setFillRule(Qt.OddEvenFill)
qtPath.moveTo(-45.0, -20.0)
qtPath.lineTo(0.0, -45.0)
qtPath.lineTo(45.0, -20.0)
qtPath.lineTo(45.0, 45.0)
qtPath.lineTo(-45.0, 45.0)
qtPath.lineTo(-45.0, -20.0)
qtPath.closeSubpath()
qtPath.moveTo(15.0, 5.0)
qtPath.lineTo(35.0, 5.0)
qtPath.lineTo(35.0, 40.0)
qtPath.lineTo(15.0, 40.0)
qtPath.lineTo(15.0, 5.0)
qtPath.moveTo(-35.0, -15.0)
qtPath.closeSubpath()
qtPath.lineTo(-10.0, -15.0)
qtPath.lineTo(-10.0, 10.0)
qtPath.lineTo(-35.0, 10.0)
qtPath.lineTo(-35.0, -15.0)
qtPath.closeSubpath()
self.path = qtPath
def paintEvent(self, event):
painter = QPainter()
painter.begin(self)
painter.setRenderHint(QPainter.Antialiasing)
if self.fake:
painter.fillRect(event.rect(), QBrush(Qt.white))
painter.fillRect(event.rect(), self.fakeBrush)
painter.setBrush(self.brush)
painter.translate(60, 60)
painter.drawPath(self.path)
painter.end()
def sizeHint(self):
return QSize(120, 120)
def minimumSizeHint(self):
return QSize(120, 120)
if __name__ == "__main__":
try:
qt = sys.argv[1]
except IndexError:
qt = "4.1"
if qt != "4.0" and qt != "4.1":
sys.stderr.write("Usage: %s [4.0|4.1]\n" % sys.argv[0])
sys.exit(1)
app = QApplication(sys.argv)
exec_dir = os.path.split(os.path.abspath(sys.argv[0]))[0]
label = QLabel()
label.setPixmap(QPixmap(os.path.join(exec_dir, "background.png")))
layout = QGridLayout()
label.setLayout(layout)
if qt == "4.0":
layout.addWidget(CustomWidget(label), 0, 0, Qt.AlignCenter)
caption = QLabel("Opaque (Default)", label)
caption.setMargin(2)
layout.addWidget(caption, 1, 0, Qt.AlignCenter | Qt.AlignTop)
elif qt == "4.1":
layout.addWidget(CustomWidget(label), 0, 0, Qt.AlignCenter)
caption = QLabel("Contents Propagated (Default)", label)
caption.setAutoFillBackground(True)
caption.setMargin(2)
layout.addWidget(caption, 1, 0, Qt.AlignCenter | Qt.AlignTop)
if qt == "4.0":
contentsWidget = CustomWidget(label)
contentsWidget.setAttribute(Qt.WA_ContentsPropagated, True)
layout.addWidget(contentsWidget, 0, 1, Qt.AlignCenter)
caption = QLabel("With WA_ContentsPropagated set", label)
caption.setMargin(2)
layout.addWidget(caption, 1, 1, Qt.AlignCenter | Qt.AlignTop)
elif qt == "4.1":
autoFillWidget = CustomWidget(label)
autoFillWidget.setAutoFillBackground(True)
layout.addWidget(autoFillWidget, 0, 1, Qt.AlignCenter)
caption = QLabel("With autoFillBackground set", label)
caption.setAutoFillBackground(True)
caption.setMargin(2)
layout.addWidget(caption, 1, 1, Qt.AlignCenter | Qt.AlignTop)
if qt == "4.0":
noBackgroundWidget = CustomWidget(label, fake = True)
noBackgroundWidget.setAttribute(Qt.WA_NoBackground, True)
layout.addWidget(noBackgroundWidget, 0, 2, Qt.AlignCenter)
caption = QLabel("With WA_NoBackground set", label)
caption.setWordWrap(True)
caption.setMargin(2)
layout.addWidget(caption, 1, 2, Qt.AlignCenter | Qt.AlignTop)
elif qt == "4.1":
opaqueWidget = CustomWidget(label, fake = True)
opaqueWidget.setAttribute(Qt.WA_OpaquePaintEvent, True)
layout.addWidget(opaqueWidget, 0, 2, Qt.AlignCenter)
caption = QLabel("With WA_OpaquePaintEvent set", label)
caption.setAutoFillBackground(True)
caption.setMargin(2)
layout.addWidget(caption, 1, 2, Qt.AlignCenter | Qt.AlignTop)
if qt == "4.0":
label.setWindowTitle("Qt 4.0: Painting Custom Widgets")
elif qt == "4.1":
label.setWindowTitle("Qt 4.1: Painting Custom Widgets")
label.resize(404, 160)
label.show()
sys.exit(app.exec_())
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