#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
## the names of its contributors may be used to endorse or promote
## products derived from this software without specific prior written
## permission.
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
## $QT_END_LICENSE$
##
#############################################################################
from math import cos, pi, sin
from PyQt5.QtCore import QSize, Qt
from PyQt5.QtGui import (QBrush, QColor, QFont, QLinearGradient, QPainter,
QPainterPath, QPalette, QPen)
from PyQt5.QtWidgets import (QApplication, QComboBox, QGridLayout, QLabel,
QSizePolicy, QSpinBox, QWidget)
class RenderArea(QWidget):
def __init__(self, path, parent=None):
super(RenderArea, self).__init__(parent)
self.path = path
self.penWidth = 1
self.rotationAngle = 0
self.setBackgroundRole(QPalette.Base)
def minimumSizeHint(self):
return QSize(50, 50)
def sizeHint(self):
return QSize(100, 100)
def setFillRule(self, rule):
self.path.setFillRule(rule)
self.update()
def setFillGradient(self, color1, color2):
self.fillColor1 = color1
self.fillColor2 = color2
self.update()
def setPenWidth(self, width):
self.penWidth = width
self.update()
def setPenColor(self, color):
self.penColor = color
self.update()
def setRotationAngle(self, degrees):
self.rotationAngle = degrees
self.update()
def paintEvent(self, event):
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
painter.scale(self.width() / 100.0, self.height() / 100.0)
painter.translate(50.0, 50.0)
painter.rotate(-self.rotationAngle)
painter.translate(-50.0, -50.0)
painter.setPen(
QPen(self.penColor, self.penWidth, Qt.SolidLine, Qt.RoundCap,
Qt.RoundJoin))
gradient = QLinearGradient(0, 0, 0, 100)
gradient.setColorAt(0.0, self.fillColor1)
gradient.setColorAt(1.0, self.fillColor2)
painter.setBrush(QBrush(gradient))
painter.drawPath(self.path)
class Window(QWidget):
NumRenderAreas = 9
def __init__(self):
super(Window, self).__init__()
rectPath = QPainterPath()
rectPath.moveTo(20.0, 30.0)
rectPath.lineTo(80.0, 30.0)
rectPath.lineTo(80.0, 70.0)
rectPath.lineTo(20.0, 70.0)
rectPath.closeSubpath()
roundRectPath = QPainterPath()
roundRectPath.moveTo(80.0, 35.0)
roundRectPath.arcTo(70.0, 30.0, 10.0, 10.0, 0.0, 90.0)
roundRectPath.lineTo(25.0, 30.0)
roundRectPath.arcTo(20.0, 30.0, 10.0, 10.0, 90.0, 90.0)
roundRectPath.lineTo(20.0, 65.0)
roundRectPath.arcTo(20.0, 60.0, 10.0, 10.0, 180.0, 90.0)
roundRectPath.lineTo(75.0, 70.0)
roundRectPath.arcTo(70.0, 60.0, 10.0, 10.0, 270.0, 90.0)
roundRectPath.closeSubpath()
ellipsePath = QPainterPath()
ellipsePath.moveTo(80.0, 50.0)
ellipsePath.arcTo(20.0, 30.0, 60.0, 40.0, 0.0, 360.0)
piePath = QPainterPath()
piePath.moveTo(50.0, 50.0)
piePath.lineTo(65.0, 32.6795)
piePath.arcTo(20.0, 30.0, 60.0, 40.0, 60.0, 240.0)
piePath.closeSubpath()
polygonPath = QPainterPath()
polygonPath.moveTo(10.0, 80.0)
polygonPath.lineTo(20.0, 10.0)
polygonPath.lineTo(80.0, 30.0)
polygonPath.lineTo(90.0, 70.0)
polygonPath.closeSubpath()
groupPath = QPainterPath()
groupPath.moveTo(60.0, 40.0)
groupPath.arcTo(20.0, 20.0, 40.0, 40.0, 0.0, 360.0)
groupPath.moveTo(40.0, 40.0)
groupPath.lineTo(40.0, 80.0)
groupPath.lineTo(80.0, 80.0)
groupPath.lineTo(80.0, 40.0)
groupPath.closeSubpath()
textPath = QPainterPath()
timesFont = QFont('Times', 50)
timesFont.setStyleStrategy(QFont.ForceOutline)
textPath.addText(10, 70, timesFont, "Qt")
bezierPath = QPainterPath()
bezierPath.moveTo(20, 30)
bezierPath.cubicTo(80, 0, 50, 50, 80, 80)
starPath = QPainterPath()
starPath.moveTo(90, 50)
for i in range(1, 5):
starPath.lineTo(50 + 40 * cos(0.8 * i * pi),
50 + 40 * sin(0.8 * i * pi))
starPath.closeSubpath()
self.renderAreas = [RenderArea(rectPath), RenderArea(roundRectPath),
RenderArea(ellipsePath), RenderArea(piePath),
RenderArea(polygonPath), RenderArea(groupPath),
RenderArea(textPath), RenderArea(bezierPath),
RenderArea(starPath)]
assert len(self.renderAreas) == 9
self.fillRuleComboBox = QComboBox()
self.fillRuleComboBox.addItem("Odd Even", Qt.OddEvenFill)
self.fillRuleComboBox.addItem("Winding", Qt.WindingFill)
fillRuleLabel = QLabel("Fill &Rule:")
fillRuleLabel.setBuddy(self.fillRuleComboBox)
self.fillColor1ComboBox = QComboBox()
self.populateWithColors(self.fillColor1ComboBox)
self.fillColor1ComboBox.setCurrentIndex(
self.fillColor1ComboBox.findText("mediumslateblue"))
self.fillColor2ComboBox = QComboBox()
self.populateWithColors(self.fillColor2ComboBox)
self.fillColor2ComboBox.setCurrentIndex(
self.fillColor2ComboBox.findText("cornsilk"))
fillGradientLabel = QLabel("&Fill Gradient:")
fillGradientLabel.setBuddy(self.fillColor1ComboBox)
fillToLabel = QLabel("to")
fillToLabel.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed)
self.penWidthSpinBox = QSpinBox()
self.penWidthSpinBox.setRange(0, 20)
penWidthLabel = QLabel("&Pen Width:")
penWidthLabel.setBuddy(self.penWidthSpinBox)
self.penColorComboBox = QComboBox()
self.populateWithColors(self.penColorComboBox)
self.penColorComboBox.setCurrentIndex(
self.penColorComboBox.findText('darkslateblue'))
penColorLabel = QLabel("Pen &Color:")
penColorLabel.setBuddy(self.penColorComboBox)
self.rotationAngleSpinBox = QSpinBox()
self.rotationAngleSpinBox.setRange(0, 359)
self.rotationAngleSpinBox.setWrapping(True)
self.rotationAngleSpinBox.setSuffix(u'\N{DEGREE SIGN}')
rotationAngleLabel = QLabel("&Rotation Angle:")
rotationAngleLabel.setBuddy(self.rotationAngleSpinBox)
self.fillRuleComboBox.activated.connect(self.fillRuleChanged)
self.fillColor1ComboBox.activated.connect(self.fillGradientChanged)
self.fillColor2ComboBox.activated.connect(self.fillGradientChanged)
self.penColorComboBox.activated.connect(self.penColorChanged)
for i in range(Window.NumRenderAreas):
self.penWidthSpinBox.valueChanged.connect(self.renderAreas[i].setPenWidth)
self.rotationAngleSpinBox.valueChanged.connect(self.renderAreas[i].setRotationAngle)
topLayout = QGridLayout()
for i in range(Window.NumRenderAreas):
topLayout.addWidget(self.renderAreas[i], i / 3, i % 3)
mainLayout = QGridLayout()
mainLayout.addLayout(topLayout, 0, 0, 1, 4)
mainLayout.addWidget(fillRuleLabel, 1, 0)
mainLayout.addWidget(self.fillRuleComboBox, 1, 1, 1, 3)
mainLayout.addWidget(fillGradientLabel, 2, 0)
mainLayout.addWidget(self.fillColor1ComboBox, 2, 1)
mainLayout.addWidget(fillToLabel, 2, 2)
mainLayout.addWidget(self.fillColor2ComboBox, 2, 3)
mainLayout.addWidget(penWidthLabel, 3, 0)
mainLayout.addWidget(self.penWidthSpinBox, 3, 1, 1, 3)
mainLayout.addWidget(penColorLabel, 4, 0)
mainLayout.addWidget(self.penColorComboBox, 4, 1, 1, 3)
mainLayout.addWidget(rotationAngleLabel, 5, 0)
mainLayout.addWidget(self.rotationAngleSpinBox, 5, 1, 1, 3)
self.setLayout(mainLayout)
self.fillRuleChanged()
self.fillGradientChanged()
self.penColorChanged()
self.penWidthSpinBox.setValue(2)
self.setWindowTitle("Painter Paths")
def fillRuleChanged(self):
rule = Qt.FillRule(self.currentItemData(self.fillRuleComboBox))
for i in range(Window.NumRenderAreas):
self.renderAreas[i].setFillRule(rule)
def fillGradientChanged(self):
color1 = QColor(self.currentItemData(self.fillColor1ComboBox))
color2 = QColor(self.currentItemData(self.fillColor2ComboBox))
for i in range(Window.NumRenderAreas):
self.renderAreas[i].setFillGradient(color1, color2)
def penColorChanged(self):
color = QColor(self.currentItemData(self.penColorComboBox))
for i in range(Window.NumRenderAreas):
self.renderAreas[i].setPenColor(color)
def populateWithColors(self, comboBox):
colorNames = QColor.colorNames()
for name in colorNames:
comboBox.addItem(name, name)
def currentItemData(self, comboBox):
return comboBox.itemData(comboBox.currentIndex())
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
