IconButton

Examples

Live example

Handling clicks

import flet as ft


def main(page: ft.Page):
    page.title = "IconButton Example"

    def button_clicked(e: ft.Event[ft.IconButton]):
        button.data += 1
        message.value = f"Button clicked {button.data} time(s)"
        page.update()

    page.add(
        button := ft.IconButton(
            icon=ft.Icons.PLAY_CIRCLE_FILL_OUTLINED,
            data=0,
            on_click=button_clicked,
        ),
        message := ft.Text(),
    )


ft.run(main)

Selected icon

import flet as ft


def main(page: ft.Page):
    page.title = "IconButton Example"
    page.padding = 10
    page.horizontal_alignment = ft.CrossAxisAlignment.CENTER
    page.vertical_alignment = ft.MainAxisAlignment.CENTER

    def handle_click(e: ft.Event[ft.IconButton]):
        e.control.selected = not e.control.selected
        e.control.update()

    page.add(
        ft.IconButton(
            icon=ft.Icons.BATTERY_1_BAR,
            selected_icon=ft.Icons.BATTERY_FULL,
            scale=5,
            on_click=handle_click,
            selected=False,
            style=ft.ButtonStyle(
                color={
                    ft.ControlState.SELECTED: ft.Colors.GREEN,
                    ft.ControlState.DEFAULT: ft.Colors.RED,
                }
            ),
        )
    )


ft.run(main)

IconButton

Bases: ConstrainedControl, AdaptiveControl

An icon button is a round button with an icon in the middle that reacts to touches by filling with color (ink).

Icon buttons are commonly used in the toolbars, but they can be used in many other places as well.

adaptive

adaptive: bool | None = None

Enables platform-specific rendering or inheritance of adaptiveness from parent controls.

alignment

alignment: Alignment | None = None

Defines how the icon is positioned within the IconButton. Alignment is an instance of Alignment class.

Defaults to alignment.center.

animate_offset

animate_offset: AnimationValue | None = None

Enables implicit animation of the offset property.

More information here.

animate_opacity

animate_opacity: AnimationValue | None = None

Enables implicit animation of the opacity property.

More information here.

animate_position

animate_position: AnimationValue | None = None

Enables implicit animation of the positioning properties (left, right, top and bottom).

More information here.

animate_rotation

animate_rotation: AnimationValue | None = None

Enables implicit animation of the rotate property.

More information here.

animate_scale

animate_scale: AnimationValue | None = None

Enables implicit animation of the scale property.

More information here.

animate_size

animate_size: AnimationValue | None = None

TBD

aspect_ratio

aspect_ratio: Number | None = None

TBD

autofocus

autofocus: bool = False

True if the control will be selected as the initial focus. If there is more than one control on a page with autofocus set, then the first one added to the page will get focus.

badge

badge: BadgeValue | None = None

A badge to show on top of this control.

bgcolor

bgcolor: ColorValue | None = None

TBD

bottom

bottom: Number | None = None

The distance that the child's bottom edge is inset from the bottom of the stack.

Note

Effective only if this control is a descendant of one of the following: Stack control, Page.overlay list.

col

col: ResponsiveNumber = 12

If a parent of this control is a ResponsiveRow, this property is used to determine how many virtual columns of a screen this control will span.

Can be a number or a dictionary configured to have a different value for specific breakpoints, for example col={"sm": 6}.

This control spans the 12 virtual columns by default.

Dimensions

Breakpoint	Dimension
xs	<576px
sm	≥576px
md	≥768px
lg	≥992px
xl	≥1200px
xxl	≥1400px

data

data: Any = skip_field()

Arbitrary data of any type.

disabled

disabled: bool = False

Every control has disabled property which is False by default - control and all its children are enabled.

Note

The value of this property will be propagated down to all children controls recursively.

Example

For example, if you have a form with multiple entry controls you can disable them all together by disabling container:

ft.Column(
    disabled = True,
    controls=[
        ft.TextField(),
        ft.TextField()
    ]
)

disabled_color

disabled_color: ColorValue | None = None

The color to use for the icon inside the button when disabled.

enable_feedback

enable_feedback: bool | None = None

Whether detected gestures should provide acoustic and/or haptic feedback. On Android, for example, setting this to True produce a click sound and a long-press will produce a short vibration.

expand

expand: bool | int | None = None

Specifies whether/how this control should expand to fill available space in its parent layout.

More information here.

Note

Has effect only if the direct parent of this control is one of the following controls, or their subclasses: Column, Row, View, Page.

expand_loose

expand_loose: bool = False

Allows the control to expand along the main axis if space is available, but does not require it to fill all available space.

More information here.

Note

If expand_loose is True, it will have effect only if:

• expand is not None and
• the direct parent of this control is one of the following controls, or their subclasses: Column, Row, View, Page.

focus_color

focus_color: ColorValue | None = None

The button's color when in focus.

height

height: Number | None = None

Imposed Control height in virtual pixels.

highlight_color

highlight_color: ColorValue | None = None

The button's color when the button is pressed. The highlight fades in quickly as the button is held down.

hover_color

hover_color: ColorValue | None = None

The button's color when hovered.

icon

icon: IconValueOrControl | None = None

Icon shown in the button.

icon_color

icon_color: ColorValue | None = None

Icon color.

icon_size

icon_size: Number | None = None

Icon size in virtual pixels.

Defaults to 24.

key

key: (
    str | int | float | bool | ValueKey | ScrollKey | None
) = None

left

left: Number | None = None

The distance that the child's left edge is inset from the left of the stack.

Note

Effective only if this control is a descendant of one of the following: Stack control, Page.overlay list.

mouse_cursor

mouse_cursor: MouseCursor | None = None

The cursor to be displayed when a mouse pointer enters or is hovering over this control.

offset

offset: OffsetValue | None = None

Applies a translation transformation before painting the control.

The translation is expressed as an Offset scaled to the control's size. So, Offset(x=0.25, y=0), for example, will result in a horizontal translation of one quarter the width of this control.

Example

The following example displays container at 0, 0 top left corner of a stack as transform applies -1 * 100, -1 * 100 (offset * control's size) horizontal and vertical translations to the control:

import flet as ft

def main(page: ft.Page):
    page.add(
        ft.Stack(
            width=1000,
            height=1000,
            controls=[
                ft.Container(
                    bgcolor="red",
                    width=100,
                    height=100,
                    left=100,
                    top=100,
                    offset=ft.Offset(-1, -1),
                )
            ],
        )
    )

ft.run(main)

on_animation_end

on_animation_end: (
    ControlEventHandler[ConstrainedControl] | None
) = None

Called when animation completes.

Can be used to chain multiple animations.

The data property of the event handler argument contains the name of the animation.

More information here.

on_blur

on_blur: ControlEventHandler[IconButton] | None = None

Called when the control has lost focus.

on_click

on_click: ControlEventHandler[IconButton] | None = None

Called when a user clicks the button.

on_focus

on_focus: ControlEventHandler[IconButton] | None = None

Called when the control has received focus.

opacity

opacity: Number = 1.0

Defines the transparency of the control.

Value ranges from 0.0 (completely transparent) to 1.0 (completely opaque without any transparency).

padding

padding: PaddingValue | None = None

Defines the padding around this button. The entire padded icon will react to input gestures.

Defaults to Padding.all(8).

page

page: Page | PageView | None

The page (of type Page or PageView) to which this control belongs to.

parent

parent: BaseControl | None

The direct ancestor(parent) of this control.

It defaults to None and will only have a value when this control is mounted (added to the page tree).

The Page control (which is the root of the tree) is an exception - it always has parent=None.

right

right: Number | None = None

The distance that the child's right edge is inset from the right of the stack.

Note

Effective only if this control is a descendant of one of the following: Stack control, Page.overlay list.

rotate

rotate: RotateValue | None = None

Transforms this control using a rotation around its center.

The value of rotate property could be one of the following types:

• number - a rotation in clockwise radians. Full circle 360° is math.pi * 2 radians, 90° is pi / 2, 45° is pi / 4, etc.
• Rotate - allows to specify rotation angle as well as alignment - the location of rotation center.

Example

For example:

ft.Image(
    src="https://picsum.photos/100/100",
    width=100,
    height=100,
    border_radius=5,
    rotate=Rotate(angle=0.25 * pi, alignment=ft.Alignment.CENTER_LEFT)
)

rtl

rtl: bool = False

Whether the text direction of the control should be right-to-left (RTL).

scale

scale: ScaleValue | None = None

Scales this control along the 2D plane. Default scale factor is 1.0, meaning no-scale.

Setting this property to 0.5, for example, makes this control twice smaller, while 2.0 makes it twice larger.

Different scale multipliers can be specified for x and y axis, by setting Control.scale property to an instance of Scale class. Either scale or scale_x and scale_y could be specified, but not all of them.

Example

ft.Image(
    src="https://picsum.photos/100/100",
    width=100,
    height=100,
    border_radius=5,
    scale=ft.Scale(scale_x=2, scale_y=0.5)
)

selected

selected: bool | None = None

The optional selection state of the icon button.

If this property is not set, the button will behave as a normal push button, otherwise, the button will toggle between showing icon and selected_icon based on the value of selected.

If True, it will show selected_icon, if False it will show icon.

selected_icon

selected_icon: IconValueOrControl | None = None

Icon shown in the button in selected state.

selected_icon_color

selected_icon_color: ColorValue | None = None

Icon color for the selected state.

An example of icon toggle button:

import flet as ft

def main(page: ft.Page):

    def toggle_icon_button(e):
        e.control.selected = not e.control.selected

    page.add(
        ft.IconButton(
            icon=ft.Icons.BATTERY_1_BAR,
            selected_icon=ft.Icons.BATTERY_FULL,
            on_click=toggle_icon_button,
            selected=False,
            style=ft.ButtonStyle(
                color={"selected": ft.Colors.GREEN, "": ft.Colors.RED},
            ),
        )
    )

ft.run(main)

size_constraints

size_constraints: BoxConstraints | None = None

TBD

splash_color

splash_color: ColorValue | None = None

The primary color of the button when the button is in the down (pressed) state.

splash_radius

splash_radius: Number | None = None

The splash radius. Honoured only when in Material 2.

style

style: ButtonStyle | None = None

TBD

tooltip

tooltip: TooltipValue | None = None

The tooltip ot show when this control is hovered over.

top

top: Number | None = None

The distance that the child's top edge is inset from the top of the stack.

Note

Effective only if this control is a descendant of one of the following: Stack control, Page.overlay list.

url

url: str | None = None

The URL to open when the button is clicked. If registered, on_click event is fired after that.

url_target

url_target: UrlTarget | None = None

Where to open URL in the web mode.

visible

visible: bool = True

Every control has visible property which is True by default - control is rendered on the page. Setting visible to False completely prevents control (and all its children if any) from rendering on a page canvas. Hidden controls cannot be focused or selected with a keyboard or mouse and they do not emit any events.

visual_density

visual_density: VisualDensity | None = None

Defines how compact the control's layout will be.

width

width: Number | None = None

Imposed Control width in virtual pixels.

before_event

before_event(e: ControlEvent)

before_update

before_update()

clean

clean() -> None

did_mount

did_mount()

focus

focus()

Moves focus to a button.

focus_async

focus_async()

Moves focus to a button.

init

init()

is_isolated

is_isolated()

update

update() -> None

will_unmount

will_unmount()