我修改了saulspatz的建议,以以下方式更正了坐标。不幸的是,它为弧线和矩形绘制了线条。我添加了width=0,但出于某种原因仍然看到一些线条。一个选项可能是使用填充颜色的线覆盖这些线条。似乎有点繁琐。
class Rounded():
def __init__(self, canvas, x1, y1, x2, y2, r, color='red'):
self.canvas = canvas
self.canvas.create_arc(x1, y1, x1+r, y1+r, start=90, extent=90, style=TK.PIESLICE, fill = color, width=0)
self.canvas.create_arc(x2-r, y1, x2, y1+r, start=0, extent=90, style=TK.PIESLICE, fill = color, width=0)
self.canvas.create_arc(x1, y2-r, x1+r, y2, start=180, extent=90, style=TK.PIESLICE, fill = color, width=0)
self.canvas.create_arc(x2-r, y2-r, x2, y2, start=270, extent=90, style=TK.PIESLICE, fill = color, width=0)
self.canvas.create_rectangle(x1+r/2, y1, x2-r/2, y2, fill=color, width=0)
self.canvas.create_rectangle(x1, y1+r/2, x2, y2-r/2, fill=color, width=0)
接着我想到了画水平线。这里的优点是,你可以为对象实现一个渐变效果。代码如下:
def using_lines(self):
xx = [3,5,6,7,8,8,9,9,9,10]
zz = [10,9,9,9,8,8,7,6,5,3]
x = 10
y = 150
width = 100
height = 30
radius = 10
r_width = width - 2*radius
left = x + radius
right = x + width - radius
for r in range(radius):
self.canvas.create_line(left, y+r, right, y+r, fill='green')
left = x + radius - xx[r]
right = x + width - radius + xx[r]
for r in range(height - 2 * r):
self.canvas.create_line(x, y+radius+r, x + width, y+radius+r, fill='green')
left = x
right = x + width
top = y + height - radius
for r in range(radius):
self.canvas.create_line(left, top+r, right, top+r, fill='green')
left = x + (radius - zz[r])
right = x + width - radius + zz[r]
我猜测数字以绘制不同长度的线条来匹配弧线,但我确信可以设计出一种计算方法。
这些线条都可以被赋予相同的标签,因此更改整个颜色很容易。为了添加边框,我还添加了Charlito的代码,尽管它并没有完全匹配我绘制的线条。
请原谅我的粗糙代码,我只是想在进一步之前快速查看概念证明。
如果速度不重要,则可以计算线条长度。对于标准按钮和标签,它们可以预定义为匹配固定半径。我对使用这些想法制作按钮和标签感兴趣。