Python -向PyQt小部件添加Tkinter Graph
Python -向PyQt小部件添加Tkinter Graph
提问于 2011-12-14 06:30:19
我们目前有一个使用PyQt创建的全功能Gui。我的伙伴写了一个函数，用Tkinter绘制了一个dataSet。我的问题是，我们如何将两者结合起来，让它们协同工作？
下面是绘图函数：
def createGraph(self):
import tkinter as tk
# Send in data as param, OR
#data = [17, 20, 15, 10, 7, 5, 4, 3, 2, 1, 1, 0]
# Recieve data within function
s.send("loadgraph")
inputString = repr(s.recv(MSGSIZE))
#inputString = "-20 15 10 7 5 -4 3 2 1 1 0"
print(inputString)
data = [int(x) for x in inputString.split()]
root = tk.Tk()
root.title("FSPwners")
screen_width = 400
screen_height = 700
screen = tk.Canvas(root, width=screen_width, height=screen_height, bg= 'white')
screen.pack()
# highest y = max_data_value * y_stretch
y_stretch = 15
# gap between lower canvas edge and x axis
y_gap = 350
# stretch enough to get all data items in
x_stretch = 10
x_width = 20
# gap between left canvas edge and y axis
x_gap = 20
for x, y in enumerate(data):
# calculate reactangle coordinates (integers) for each bar
x0 = x * x_stretch + x * x_width + x_gap
y0 = screen_height - (y * y_stretch + y_gap)
x1 = x * x_stretch + x * x_width + x_width + x_gap
y1 = screen_height - y_gap
# draw the bar
print(x0, y0, x1, y1)
if y < 0:
screen.create_rectangle(x0, y0, x1, y1, fill="red")
else:
screen.create_rectangle(x0, y0, x1, y1, fill="green")
# put the y value above each bar
screen.create_text(x0+2, y0, anchor=tk.SW, text=str(y))
root.mainloop()当该方法自己运行时，它会创建一个带有图形的弹出框。现在，我们想让它在当前gui中按下按钮时创建一个弹出图。我们怎么才能让它工作呢？如果我们只是在图形用户界面中单击一个按钮时调用createGraph()，我们会得到这样的错误:无法识别的选择器发送到实例x009x...
有什么问题吗？谢谢!
回答 2
Stack Overflow用户
回答已采纳
发布于 2011-12-14 06:53:48
Qt和Tkinter不能很好地配合，正如你所看到的-我曾经使用Python图形工具包，并编写了一个4次运算计算器，可以在Qt，GTK或Tkinter中运行-甚至可以一次显示所有内容。
为了同时运行Tkinter和Qt版本，我必须派生进程--并在单独的运行实例中启动每个工具包；
您的案例并不完全相同，因为Qt GUI已经在运行了，但是也许有了这样的启动，您就可以找到一种变通方法。
3个计算器的代码清单可以在这里找到：
http://www.python.org.br/wiki/CalculadoraTkGtkQt
Stack Overflow用户
发布于 2011-12-14 10:56:19
这是一个PyQt端口：
from PyQt4 import QtCore, QtGui
class Graph(QtGui.QWidget):
def __init__(self, data, parent=None):
QtGui.QWidget.__init__(self, parent)
self._data = data
self.resize(400, 700)
self.setWindowTitle('FSPwners')
self.setAutoFillBackground(True)
self.setBackgroundRole(QtGui.QPalette.Base)
def paintEvent(self, event):
painter = QtGui.QPainter()
painter.begin(self)
screen_width = self.width()
screen_height = self.height()
# highest y = max_data_value * y_stretch
y_stretch = 15
# gap between lower canvas edge and x axis
y_gap = 350
# stretch enough to get all data items in
x_stretch = 10
x_width = 20
# gap between left canvas edge and y axis
x_gap = 20
for x, y in enumerate(self._data):
# calculate reactangle coordinates (integers) for each bar
x0 = x * x_stretch + x * x_width + x_gap
y0 = screen_height - (y * y_stretch + y_gap)
x1 = x0 + x_width
y1 = screen_height - y_gap
if y < 0:
painter.setBrush(QtCore.Qt.red)
else:
painter.setBrush(QtCore.Qt.green)
painter.drawRect(QtCore.QRectF(
QtCore.QPointF(x0, y0), QtCore.QPointF(x1, y1)))
print (x0, y0, x1, y1)
# put the y value above each bar
painter.drawText(x0 + 2, y0 - 2, str(y))
painter.end()
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
# data to be graphed
data = [-20, 15, 10, 7, 5, -4, 3, 2, 1, 1, 0]
window = Graph(data)
window.show()
sys.exit(app.exec_())页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/8497142
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