RadialGradient 继承自： Gradient

Creates a radial gradient centered at center that ends at radius distance from the center.

More information here.

属性

名称	类型	默认值	说明
center	Alignment	Alignment.CENTER()	The center of the gradient, as an offset into the (-1.0, -1.0) x (1.0, 1.0) square describing the gradient which will be mapped onto the paint box. For example, an alignment of (0.0, 0.0) will place the radial gradient in the center of the box.
radius	Number	0.5	The radius of the 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 center.
focal	Optional[Alignment]	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.
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 it.
tile_mode	GradientTileMode	GradientTileMode.CLAMP	How this gradient should tile the plane beyond in the region before begin and after end.
rotation	Optional[Number]	None	The rotation of the gradient in radians, around the center-point of its bounding box.
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.

示例

Container with radial gradient

import flet as ft


def main(page: ft.Page):
    page.add(
        ft.SafeArea(
            content=ft.Column(
                controls=[
                    ft.Container(
                        alignment=ft.Alignment.CENTER,
                        width=150,
                        height=150,
                        border_radius=ft.BorderRadius.all(5),
                        gradient=ft.RadialGradient(
                            center=ft.Alignment(0.7, -0.6),
                            radius=0.2,
                            colors=["0xFFFFFF00", "0xFF0099FF"],
                            stops=[0.4, 1.0],
                        ),
                    )
                ],
            ),
        )
    )


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