PaintRadialGradient 继承自： PaintGradient

More information on Radial gradient https://api.flutter.dev/flutter/dart-ui/Gradient/Gradient.radial.html

属性

名称	类型	默认值	说明
center	Optional[OffsetValue]	required	The center of the gradient.
radius	Number	required	The radius of the gradient.
colors	list[ColorValue]	required	The colors the gradient should obtain at each of the stops. This list must contain at least two colors. If stops is provided, this list must have the same length as stops.
color_stops	Optional[list[Number]]	None	A list of values from 0.0 to 1.0 that denote fractions along the gradient. If provided, this list must have the same length as colors. If the first value is not 0.0, then a stop with position 0.0 and a color equal to the first color in colors is implied. If the last value is not 1.0, then a stop with position 1.0 and a color equal to the last color in colors is implied.
tile_mode	GradientTileMode	GradientTileMode.CLAMP	How this gradient should tile the plane beyond in the region before begin and after end.
focal	Optional[OffsetValue]	None	The focal point of the gradient. If specified, the gradient will appear to be focused along the vector from center to focal.
focal_radius	Number	0.0	The radius of the focal point of gradient, as a fraction of the shortest side of the paint box. For example, if a radial gradient is painted on a box that is 100.0 pixels wide and 200.0 pixels tall, then a radius of 1.0 will place the 1.0 stop at 100.0 pixels from the focal point.

方法

名称	类型	默认值	说明
copy	'PaintRadialGradient'	—	返回此对象的副本，可覆盖指定属性。

示例

Canvas paint

import flet as ft
import flet.canvas as cv


def main(page: ft.Page):
    page.add(
        ft.SafeArea(
            content=ft.Column(
                controls=[
                    cv.Canvas(
                        width=float("inf"),
                        expand=True,
                        shapes=[
                            cv.Circle(
                                x=60,
                                y=170,
                                radius=50,
                                paint=ft.Paint(
                                    style=ft.PaintingStyle.FILL,
                                    gradient=ft.PaintRadialGradient(
                                        radius=50,
                                        center=(60, 170),
                                        colors=[ft.Colors.YELLOW, ft.Colors.BLUE],
                                    ),
                                ),
                            ),
                        ],
                    )
                ],
            ),
        )
    )


if __name__ == "__main__":
    ft.run(main)