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# -*- coding: utf-8 -*-
SHOW = True # Show test in GUI-based test launcher
import os.path as osp
import numpy as np
from qtpy import QtCore as QC
from qtpy import QtGui as QG
from qtpy import QtWidgets as QW
import qwt
from qwt.tests import utils
class BaseSymbolPlot(qwt.QwtPlot):
TITLE = "Base Symbol Example"
SYMBOL_CLASS = qwt.QwtSymbol
def __init__(self):
super().__init__()
self.setTitle(self.TITLE)
self.setAxisScale(self.yLeft, -20, 20)
self.setAxisScale(self.xBottom, -20, 20)
self.setup_plot()
def setup_plot(self):
samples = ([-15, 0, 15, -15], [0, 15, 0, 0])
self.add_curve(self.TITLE, samples, self.SYMBOL_CLASS())
self.resize(400, 400)
def add_curve(self, title, samples, symbol=None):
"""Add a curve to the plot"""
curve = qwt.QwtPlotCurve(title)
curve.setSamples(*samples)
if symbol is not None:
curve.setSymbol(symbol)
curve.attach(self)
self.replot()
class BuiltinSymbolPlot(BaseSymbolPlot):
TITLE = "Built-in Symbol Example"
def setup_plot(self):
colors = (QC.Qt.red, QC.Qt.green, QC.Qt.blue, QC.Qt.yellow, QC.Qt.magenta)
for index, symbol_name in enumerate(
(
"Ellipse",
"Rect",
"Diamond",
"Triangle",
"DTriangle",
"UTriangle",
"LTriangle",
"RTriangle",
"Cross",
"XCross",
"HLine",
"VLine",
"Star1",
"Star2",
"Hexagon",
)
):
symbol = qwt.symbol.QwtSymbol(getattr(qwt.QwtSymbol, symbol_name))
symbol.setSize(7, 7)
symbol.setPen(QG.QPen(colors[index % 3]))
symbol.setBrush(QG.QBrush(QG.QColor(colors[index % 3]).lighter(150)))
x = np.linspace(-10, 10, 100)
y = np.sin(x + index * np.pi / 10)
samples = (x, y)
qwt.plot_marker.QwtPlotMarker.make(
xvalue=index * 2 - 10,
yvalue=index * 2 - 10,
label=qwt.text.QwtText.make(
"Marker",
color=QC.Qt.black,
borderradius=2,
brush=QC.Qt.lightGray,
),
symbol=symbol,
plot=self,
)
self.add_curve(symbol_name, samples, symbol)
self.setAxisAutoScale(self.yLeft, True)
self.setAxisAutoScale(self.xBottom, True)
class CustomGraphicSymbol(qwt.QwtSymbol):
def __init__(self):
super(CustomGraphicSymbol, self).__init__(qwt.QwtSymbol.Graphic)
# Use a built-in Qt icon as QPixmap for demonstration
icon = QW.QApplication.style().standardIcon(QW.QStyle.SP_FileIcon)
pixmap = icon.pixmap(20, 20)
# Convert the QPixmap to a QwtGraphic
graphic = qwt.graphic.QwtGraphic()
graphic.setDefaultSize(pixmap.size())
painter = QG.QPainter(graphic)
painter.drawPixmap(0, 0, pixmap)
painter.end()
# Set the QwtGraphic as the graphic for the symbol
self.setGraphic(graphic)
class GraphicPlot(BaseSymbolPlot):
TITLE = "Custom QwtGraphic Symbol Example"
SYMBOL_CLASS = CustomGraphicSymbol
class CustomPixmapSymbol(qwt.QwtSymbol):
def __init__(self):
super(CustomPixmapSymbol, self).__init__(qwt.QwtSymbol.Pixmap)
# Use a built-in Qt icon as QPixmap for demonstration
icon = QW.QApplication.style().standardIcon(QW.QStyle.SP_DialogYesButton)
pixmap = icon.pixmap(20, 20)
# Set the QPixmap for the symbol
self.setPixmap(pixmap)
class PixmapPlot(BaseSymbolPlot):
TITLE = "Custom QPixmap Symbol Example"
SYMBOL_CLASS = CustomPixmapSymbol
class CustomPathSymbol(qwt.QwtSymbol):
def __init__(self):
super(CustomPathSymbol, self).__init__(qwt.QwtSymbol.Path)
path = QG.QPainterPath()
path.moveTo(0, -10) # Top vertex of the triangle
path.lineTo(-10, 10) # Bottom-left vertex
path.lineTo(10, 10) # Bottom-right vertex
path.closeSubpath() # Close the triangle
self.setPath(path)
self.setSize(20, 20)
class PathPlot(BaseSymbolPlot):
TITLE = "Custom Path Symbol Example"
SYMBOL_CLASS = CustomPathSymbol
class CustomSvgSymbol(qwt.QwtSymbol):
FNAME = osp.join(osp.dirname(__file__), "data", "symbol.svg")
def __init__(self):
super(CustomSvgSymbol, self).__init__(qwt.QwtSymbol.SvgDocument)
# Load the SVG document from the given file
self.setSvgDocument(self.FNAME)
class SvgDocumentPlot(BaseSymbolPlot):
TITLE = "Custom SVG Symbol Example"
SYMBOL_CLASS = CustomSvgSymbol
def test_base():
"""Base symbol test"""
utils.test_widget(BaseSymbolPlot, size=(600, 400))
def test_builtin():
"""Built-in symbol test"""
utils.test_widget(BuiltinSymbolPlot, size=(600, 400))
def test_graphic():
"""Graphic symbol test"""
utils.test_widget(GraphicPlot, size=(600, 400))
def test_pixmap():
"""Pixmap test"""
utils.test_widget(PixmapPlot, size=(600, 400))
def test_path():
"""Path symbol test"""
utils.test_widget(PathPlot, size=(600, 400))
def test_svg():
"""SVG test"""
utils.test_widget(SvgDocumentPlot, size=(600, 400))
if __name__ == "__main__":
# test_base()
test_builtin()
# test_graphic()
# test_pixmap()
# test_path()
# test_svg()
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