Button
An accessible button. .fnc(...) runs on activation (click, Enter, Space). Unstyled except .preset(default).
A counter
Button is an accessible button: .fnc { … } runs when it is clicked, tapped, or pressed with Enter or Space. It is unstyled; style it like a Container, or start from .preset(default). Every Button gives a little when pressed.
Page(
.name(Counter)
.route('/')
var int count = 0
Scaffold(
.config(color: canvas)
.body(
Row(
.config(gap: 12, padding: all(24), yAlign: mid)
Button(
.config(color: accent, cornerRadius: 10, padding: sym(x: 18, y: 10))
.fnc { count++ }
.obj(Text(.config(color: onAccent, weight: semibold) .obj('Add one')))
)
Button(
.preset(default)
.config(disabled: count == 0, label: 'Reset')
.fnc { count = 0 }
)
Text(.config(size: 18, weight: semibold) .obj('$count'))
)
)
)
)label gives a Button plain text; for styled content put a Text in its .obj. Either way the text is its accessible name. In a Form, submit: true makes a Button submit it.
Config keys
| Key | Type | Default | Meaning |
|---|---|---|---|
w (width) | len | fill | hug | Width: a length, fill (share the remaining space) or hug (fit content, default). | |
h (height) | len | fill | hug | Height: a length, fill or hug (default). | |
size (s) | size | Width and height together: size: 200 or size: (200, 120). | |
minW (minWidth) | len | Minimum width. | |
maxW (maxWidth) | len | Maximum width. | |
minH (minHeight) | len | Minimum height. | |
maxH (maxHeight) | len | Maximum height. | |
aspect (aspectRatio) | num | Aspect ratio (width / height), e.g. 16/9. | |
color (bg, background, colorBG) | paint | Background paint: a colour or gradient. | |
padding (pad) | insets | Space inside the object. | |
cornerRadius (radius, borderRadius, corner) | radius | Corner radius: one length or only(topLeft: 8, …). | |
borderWidth | len | Border width. | |
borderColor | color | Border colour. | |
borderAlign | in | mid | out | in | Where the border sits relative to the edge: in, mid or out. |
borderStyle | solid | dashed | dotted | solid | Border line style. |
borderSides | all | top | bottom | left | right | x | y | all | Which sides draw the border (inside the box). |
shadow | shadow | Drop shadow(s): shadow(y: 4, blur: 12, color: black.alpha(20%)). | |
clip | bool | Clip children to the object's bounds (and corner radius). | |
z | int | Stacking order among siblings. | |
margin | insets | Space outside the object: all(8), sym(x: 8, y: 4), only(top: 8). | |
opacity | num | Opacity from 0 to 1. | |
hide (hidden) | bool | Removes the object from layout and the accessibility tree. | |
shrink | num | 1 | Shrink priority when space runs out. Lower shrinks first; 0 never shrinks. |
flex | num | 1 | Share of remaining space for fill sizes. |
cursor | auto | pointer | text | grab | grabbing | move | notAllowed | crosshair | none | Pointer cursor. | |
className (class) | txt | Extra CSS class names: styling hooks for your own stylesheet (hover rules, third-party CSS). | |
label | txt | Button text (and accessible name). | |
disabled | bool | Disabled. | |
submit | bool | Submits its Form. | |
objAlign (align, alignment, contentAlign) | align | topLeft | Where the object's content sits inside it. |
Group .border(align, color, width, style, sides): Border settings grouped: .border(align: in, color: #0d0d0d, width: 2).
Slots
.obj: one object, the default slot
Events
.fnc runs on press. .on(...) accepts tap, press, hover, hoverEnd, focus, blur, key, drag, swipe, mount, unmount, visible.