[英]How to change the background color of a kivy Graph?
是否存在與下面的屬性類似的屬性,用於更改Kivy中Graph的背景顏色?
test.kv
Graph:
id: my_graph_id
border_color = (0,0,0,0) # this is valid
background_color = (0,0,0,0) # ?? this does not exist
在Python代碼中使用graph.background_color
。 Kivy Garden Graph確實存在background_color屬性,如下所示。
from math import sin
from kivy.garden.graph import Graph, MeshLinePlot
from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
class RootWidget(BoxLayout):
def __init__(self, **kwargs):
super(RootWidget, self).__init__(**kwargs)
graph = Graph(xlabel='X', ylabel='Y', x_ticks_minor=5, x_ticks_major=25, y_ticks_major=1,
y_grid_label=True, x_grid_label=True, padding=5,
x_grid=True, y_grid=True, xmin=-0, xmax=100, ymin=-1, ymax=1)
graph.background_color = 0, 0, 1, 1 # blue color
plot = MeshLinePlot(color=[1, 0, 0, 1])
plot.points = [(x, sin(x / 10.)) for x in range(0, 101)]
graph.add_plot(plot)
self.add_widget(graph)
class GraphDemo(App):
title = "Kivy Garden Graph - background_color"
def build(self):
return RootWidget()
if __name__ == "__main__":
GraphDemo().run()
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