Builtin Elements#
Common properties#
Geometry#
These properties are valid on all visible items:
width
andheight
(in length): The size of the element. When set, this overrides the default size.x
andy
(in length): The position of the element relative to its parent.z
(in float): Allows to specify a different order to stack the items with its siblings. (default value: 0)absolute-position
(in Point): The position of the element within the contained window.
Layout#
These properties are valid on all visible items and can be used to specify constraints when used in layouts:
col
,row
,colspan
,rowspan
(in int): SeeGridLayout
.horizontal-stretch
andvertical-stretch
(in-out float): Specify how much relative space these elements are stretching in a layout. When 0, this means that the elements won’t be stretched unless all elements are 0. Builtin widgets have a value of either 0 or 1.max-width
andmax-height
(in length): The maximum size of an elementmin-width
andmin-height
(in length): The minimum size of an elementpreferred-width
andpreferred-height
(in length): The preferred size of an element
Miscellaneous#
cache-rendering-hint
(in bool): When set totrue
, this provides a hint to the renderer to cache the contents of the element and all the children into an intermediate cached layer. For complex sub-trees that rarely change this may speed up the rendering, at the expense of increased memory consumption. Not all rendering backends support this, so this is merely a hint. (default value:false
)dialog-button-role
(in enumDialogButtonRole
): Specify that this is a button in aDialog
.opacity
(in float): A value between 0 and 1 (or a percentage) that is used to draw the element and its children with transparency. 0 is fully transparent (invisible), and 1 is fully opaque. The opacity is applied to the tree of child elements as if they were first drawn into an intermediate layer, and then the whole layer is rendered with this opacity. (default value: 1)visible
(in bool): When set tofalse
, the element and all his children won’t be drawn and not react to mouse input (default value:true
)
The following example demonstrates the opacity
property with children. An opacity is applied to the red rectangle. Since the green rectangle is a child of the red one, you can see the gradient underneath it, but you can’t see the red rectangle through the green one.
export component Example inherits Window {
width: 100px;
height: 100px;
background: @radial-gradient(circle, black, white, black, white);
Rectangle {
opacity: 0.5;
background: red;
border-color: #822;
border-width: 5px;
width: 50px; height: 50px;
x: 10px; y: 10px;
Rectangle {
background: green;
border-color: #050;
border-width: 5px;
width: 50px; height: 50px;
x: 25px; y: 25px;
}
}
}
Accessibility#
Use the following accessible-
properties to make your items interact well with software like screen readers, braille terminals and other software to make your application accessible.
accessible-role
(in enumAccessibleRole
): The role of the element. This property is mandatory to be able to use any other accessible properties. It should be set to a constant value. (default value:none
for most elements, buttext
for the Text element)accessible-checkable
(in bool): Whether the element is can be checked or not.accessible-checked
(in bool): Whether the element is checked or not. This maps to the “checked” state of checkboxes, radio buttons, and other widgets.accessible-description
(in string): The description for the current element.accessible-has-focus
(in bool): Set to true when the current element currently has the focus.accessible-label
(in string): The label for an interactive element. (default value: empty for most elements, or the value of thetext
property for Text elements)accessible-value-maximum
(in float): The maximum value of the item. This is used for example by spin boxes.accessible-value-minimum
(in float): The minimum value of the item.accessible-value-step
(in float) The smallest increment or decrement by which the current value can change. This corresponds to the step by which a handle on a slider can be dragged.accessible-value
(in string): The current value of the item.
Drop Shadows#
To achieve the graphical effect of a visually elevated shape that shows a shadow effect underneath the frame of
an element, it’s possible to set the following drop-shadow
properties:
drop-shadow-blur
(in length): The radius of the shadow that also describes the level of blur applied to the shadow. Negative values are ignored and zero means no blur. (default value: 0)drop-shadow-color
(in color): The base color of the shadow to use. Typically that color is the starting color of a gradient that fades into transparency.drop-shadow-offset-x
anddrop-shadow-offset-y
(in length): The horizontal and vertical distance of the shadow from the element’s frame. A negative value places the shadow left / above of the element.
The drop-shadow
effect is supported for Rectangle
elements.
Dialog
#
Dialog is like a window, but it has buttons that are automatically laid out.
A Dialog should have one main element as child, that isn’t a button.
The dialog can have any number of StandardButton
widgets or other buttons
with the dialog-button-role
property.
The buttons will be placed in an order that depends on the target platform at run-time.
The kind
property of the StandardButton
s and the dialog-button-role
properties need to be set to a constant value, it can’t be an arbitrary variable expression.
There can’t be several StandardButton
s of the same kind.
A callback <kind>_clicked
is automatically added for each StandardButton
which doesn’t have an explicit
callback handler, so it can be handled from the native code: For example if there is a button of kind cancel
,
a cancel_clicked
callback will be added.
Properties#
icon
(in image): The window icon shown in the title bar or the task bar on window managers supporting it.title
(in string): The window title that is shown in the title bar.
Example#
import { StandardButton, Button } from "std-widgets.slint";
export component Example inherits Dialog {
Text {
text: "This is a dialog box";
}
StandardButton { kind: ok; }
StandardButton { kind: cancel; }
Button {
text: "More Info";
dialog-button-role: action;
}
}
Flickable
#
The Flickable
is a low-level element that is the base for scrollable
widgets, such as the ScrollView
. When the viewport-width
or the
viewport-height
is greater than the parent’s width
or height
respectively, the element becomes scrollable. Note that the Flickable
doesn’t create a scrollbar. When unset, the viewport-width
and viewport-height
are
calculated automatically based on the Flickable
’s children. This isn’t the
case when using a for
loop to populate the elements. This is a bug tracked in
issue #407.
The maximum and preferred size of the Flickable
are based on the viewport.
When not part of a layout, its width or height defaults to 100% of the parent element when not specified.
Properties#
interactive
(in bool): When true, the viewport can be scrolled by clicking on it and dragging it with the cursor. (default value: true)viewport-height
,viewport-width
(in length): The total size of the scrollable element.viewport-x
,viewport-y
(in length): The position of the scrollable element relative to theFlickable
. This is usually a negative value.
Example#
export component Example inherits Window {
width: 270px;
height: 100px;
Flickable {
viewport-height: 300px;
Text {
x:0;
y: 150px;
text: "This is some text that you have to scroll to see";
}
}
}
FocusScope
#
The FocusScope
exposes callbacks to intercept key events. Note that FocusScope
will only invoke them when it has-focus
.
The KeyEvent
has a text property, which is a character of the key entered.
When a non-printable key is pressed, the character will be either a control character,
or it will be mapped to a private unicode character. The mapping of these non-printable, special characters is available in the Key
namespace
Properties#
has-focus
(out bool): Istrue
when the element has keyboard focus.enabled
(in bool): When true, theFocusScope
will make itself the focused element when clicked. Set this to false if you don’t want the click-to-focus behavior. Similarly, a disabledFocusScope
does not accept the focus via tab focus traversal. A parentFocusScope
will still receive key events from childFocusScope
s that were rejected, even ifenabled
is set to false. (default value: true)
Functions#
focus()
Call this function to transfer keyboard focus to thisFocusScope
, to receive futureKeyEvent
s.
Callbacks#
key-pressed(
KeyEvent
) ->
EventResult
: Invoked when a key is pressed, the argument is aKeyEvent
struct.key-released(
KeyEvent
) ->
EventResult
: Invoked when a key is released, the argument is aKeyEvent
struct.
Example#
export component Example inherits Window {
width: 100px;
height: 100px;
forward-focus: my-key-handler;
my-key-handler := FocusScope {
key-pressed(event) => {
debug(event.text);
if (event.modifiers.control) {
debug("control was pressed during this event");
}
if (event.text == Key.Escape) {
debug("Esc key was pressed")
}
accept
}
}
}
GridLayout
#
GridLayout
places its children in a grid. GridLayout
adds properties to each child: col
, row
, colspan
, rowspan
.
You can control the position of children with col
and row
.
If col
or row
aren’t specified, they are automatically computed such that the item is next to the previous item, in the same row.
Alternatively, the item can be put in a Row
element.
Properties#
spacing
(in length): The distance between the elements in the layout.padding
(in length): The padding within the layout.padding-left
,padding-right
,padding-top
andpadding-bottom
(in length): Set these properties to override the padding on specific sides.
Examples#
This example uses the Row
element:
export component Foo inherits Window {
width: 200px;
height: 200px;
GridLayout {
spacing: 5px;
Row {
Rectangle { background: red; }
Rectangle { background: blue; }
}
Row {
Rectangle { background: yellow; }
Rectangle { background: green; }
}
}
}
This example uses the col
and row
properties
export component Foo inherits Window {
width: 200px;
height: 150px;
GridLayout {
Rectangle { background: red; }
Rectangle { background: blue; }
Rectangle { background: yellow; row: 1; }
Rectangle { background: green; }
Rectangle { background: black; col: 2; row: 0; }
}
}
Image
#
An Image
can be used to represent an image loaded from a file.
Properties#
colorize
(in brush): When set, the image is used as an alpha mask and is drawn in the given color (or with the gradient).image-fit
(in enumImageFit
): Specifies how the source image shall be fit into the image element. (default value:contain
when theImage
element is part of a layout,fill
otherwise)image-rendering
(in enumImageRendering
): Specifies how the source image will be scaled. (default value:smooth
)rotation-angle
(in angle),rotation-origin-x
(in length),rotation-origin-y
(in length): Rotates the image by the given angle around the specified origin point. The default origin point is the center of the element. When these properties are set, theImage
can’t have children.source
(in image): The image to load. Use the@image-url("...")
macro to specify the location of the image.source-clip-x
,source-clip-y
,source-clip-width
,source-clip-height
(in int): Properties in source image coordinates that define the region of the source image that is rendered. By default the entire source image is visible:Property
Default Binding
source-clip-x
0
source-clip-y
0
source-clip-width
source.width - source-clip-x
source-clip-height
source.height - source-clip-y
width
,height
(in length): The width and height of the image as it appears on the screen.The default values are the sizes provided by thesource
image. If theImage
is not in a layout and only one of the two sizes are specified, then the other defaults to the specified value scaled according to the aspect ratio of thesource
image.
Example#
export component Example inherits Window {
width: 100px;
height: 100px;
VerticalLayout {
Image {
source: @image-url("https://slint.dev/logo/slint-logo-full-light.svg");
// image-fit default is `contain` when in layout, preserving aspect ratio
}
Image {
source: @image-url("https://slint.dev/logo/slint-logo-full-light.svg");
colorize: red;
}
}
}
Scaled while preserving the aspect ratio:
export component Example inherits Window {
width: 100px;
height: 150px;
VerticalLayout {
Image {
source: @image-url("https://slint.dev/logo/slint-logo-full-light.svg");
width: 100px;
// implicit default, preserving aspect ratio:
// height: self.width * natural_height / natural_width;
}
}
}
Path
#
The Path
element allows rendering a generic shape, composed of different geometric commands. A path
shape can be filled and outlined.
When not part of a layout, its width or height defaults to 100% of the parent element when not specified.
A path can be defined in two different ways:
Using SVG path commands as a string
Using path command elements in
.slint
markup.
The coordinates used in the geometric commands are within the imaginary coordinate system of the path.
When rendering on the screen, the shape is drawn relative to the x
and y
properties. If the width
and height
properties are non-zero, then the entire shape is fit into these bounds - by scaling
accordingly.
Common Path Properties#
fill
(in brush): The color for filling the shape of the path.fill-rule
(in enumFillRule
): The fill rule to use for the path. (default value:nonzero
)stroke
(in brush): The color for drawing the outline of the path.stroke-width
(in length): The width of the outline.width
(in length): If non-zero, the path will be scaled to fit into the specified width.height
(in length): If non-zero, the path will be scaled to fit into the specified height.viewbox-x
/viewbox-y
/viewbox-width
/viewbox-height
(in float) These four properties allow defining the position and size of the viewport of the path in path coordinates.If the
viewbox-width
orviewbox-height
is less or equal than zero, the viewbox properties are ignored and instead the bounding rectangle of all path elements is used to define the view port.clip
(in bool): By default, when a path has a view box defined and the elements render outside of it, they are still rendered. When this property is set totrue
, then rendering will be clipped at the boundaries of the view box. This property must be a literaltrue
orfalse
(default value:false
)
Path Using SVG commands#
SVG is a popular file format for defining scalable graphics, which are often composed of paths. In SVG
paths are composed using commands,
which in turn are written in a string. In .slint
the path commands are provided to the commands
property. The following example renders a shape consists of an arc and a rectangle, composed of line-to
,
move-to
and arc
commands:
export component Example inherits Path {
width: 100px;
height: 100px;
commands: "M 0 0 L 0 100 A 1 1 0 0 0 100 100 L 100 0 Z";
stroke: red;
stroke-width: 1px;
}
The commands are provided in a property:
commands
(in string): A string providing the commands according to the SVG path specification.
Path Using SVG Path Elements#
The shape of the path can also be described using elements that resemble the SVG path commands but use the
.slint
markup syntax. The earlier example using SVG commands can also be written like that:
export component Example inherits Path {
width: 100px;
height: 100px;
stroke: blue;
stroke-width: 1px;
MoveTo {
x: 0;
y: 0;
}
LineTo {
x: 0;
y: 100;
}
ArcTo {
radius-x: 1;
radius-y: 1;
x: 100;
y: 100;
}
LineTo {
x: 100;
y: 0;
}
Close {
}
}
Note how the coordinates of the path elements don’t use units - they operate within the imaginary coordinate system of the scalable path.
MoveTo
Sub-element for Path
#
The MoveTo
sub-element closes the current sub-path, if present, and moves the current point
to the location specified by the x
and y
properties. Subsequent elements such as LineTo
will use this new position as their starting point, therefore this starts a new sub-path.
Properties#
x
(in float): The x position of the new current point.y
(in float): The y position of the new current point.
LineTo
Sub-element for Path
#
The LineTo
sub-element describes a line from the path’s current position to the
location specified by the x
and y
properties.
Properties#
x
(in float): The target x position of the line.y
(in float): The target y position of the line.
ArcTo
Sub-element for Path
#
The ArcTo
sub-element describes the portion of an ellipse. The arc is drawn from the path’s
current position to the location specified by the x
and y
properties. The remaining properties
are modelled after the SVG specification and allow tuning visual features such as the direction
or angle.
Properties#
large-arc
(in bool): Out of the two arcs of a closed ellipse, this flag selects that the larger arc is to be rendered. If the property isfalse
, the shorter arc is rendered instead.radius-x
(in float): The x-radius of the ellipse.radius-y
(in float): The y-radius of the ellipse.sweep
(in bool): If the property istrue
, the arc will be drawn as a clockwise turning arc; anti-clockwise otherwise.x-rotation
(in float): The x-axis of the ellipse will be rotated by the value of this properties, specified in as angle in degrees from 0 to 360.x
(in float): The target x position of the line.y
(in float): The target y position of the line.
CubicTo
Sub-element for Path
#
The CubicTo
sub-element describes a smooth Bézier from the path’s current position to the
location specified by the x
and y
properties, using two control points specified by their
respective properties.
Properties#
control-1-x
(in float): The x coordinate of the curve’s first control point.control-1-y
(in float): The y coordinate of the curve’s first control point.control-2-x
(in float): The x coordinate of the curve’s second control point.control-2-y
(in float): The y coordinate of the curve’s second control point.x
(in float): The target x position of the curve.y
(in float): The target y position of the curve.
QuadraticTo
Sub-element for Path
#
The QuadraticTo
sub-element describes a smooth Bézier from the path’s current position to the
location specified by the x
and y
properties, using the control points specified by the
control-x
and control-y
properties.
Properties#
control-x
(in float): The x coordinate of the curve’s control point.control-y
(in float): The y coordinate of the curve’s control point.x
(in float): The target x position of the curve.y
(in float): The target y position of the curve.
Close
Sub-element for Path
#
The Close
element closes the current sub-path and draws a straight line from the current
position to the beginning of the path.
PopupWindow
#
Use this element to show a popup window like a tooltip or a popup menu.
Note: It isn’t allowed to access properties of elements within the popup from outside of the PopupWindow
.
Properties#
close-on-click
(in bool): By default, a PopupWindow closes when the user clicks. Set this to false to prevent that behavior and close it manually using theclose()
function. (default value: true)
Functions#
show()
Show the popup on the screen.close()
Closes the popup. Use this if you set theclose-on-click
property to false.
Example#
export component Example inherits Window {
width: 100px;
height: 100px;
popup := PopupWindow {
Rectangle { height:100%; width: 100%; background: yellow; }
x: 20px; y: 20px; height: 50px; width: 50px;
}
TouchArea {
height:100%; width: 100%;
clicked => { popup.show(); }
}
}
Rectangle
#
By default, a Rectangle
is just an empty item that shows nothing. By setting a color or configuring a border,
it’s then possible to draw a rectangle on the screen.
When not part of a layout, its width and height default to 100% of the parent element.
Properties#
background
(in brush): The background brush of thisRectangle
, typically a color. (default value:transparent
)border-color
(in brush): The color of the border. (default value:transparent
)border-radius
(in length): The size of the radius. (default value: 0)border-width
(in length): The width of the border. (default value: 0)clip
(in bool): By default, when an element is bigger or outside another element, it’s still shown. When this property is set totrue
, the children of thisRectangle
are clipped to the border of the rectangle. (default value:false
)
Example#
export component Example inherits Window {
width: 270px;
height: 100px;
Rectangle {
x: 10px;
y: 10px;
width: 50px;
height: 50px;
background: blue;
}
// Rectangle with a border
Rectangle {
x: 70px;
y: 10px;
width: 50px;
height: 50px;
background: green;
border-width: 2px;
border-color: red;
}
// Transparent Rectangle with a border and a radius
Rectangle {
x: 140px;
y: 10px;
width: 50px;
height: 50px;
border-width: 4px;
border-color: black;
border-radius: 10px;
}
// A radius of width/2 makes it a circle
Rectangle {
x: 210px;
y: 10px;
width: 50px;
height: 50px;
background: yellow;
border-width: 2px;
border-color: blue;
border-radius: self.width/2;
}
}
TextInput
#
The TextInput
is a lower-level item that shows text and allows entering text.
When not part of a layout, its width or height defaults to 100% of the parent element when not specified.
Properties#
color
(in brush): The color of the text (default value: depends on the style)font-family
(in string): The name of the font family selected for rendering the text.font-size
(in length): The font size of the text.font-weight
(in int): The weight of the font. The values range from 100 (lightest) to 900 (thickest). 400 is the normal weight.font-italic
(in bool): Whether or not the font face should be drawn italicized or not. (default value: false)has-focus
(out bool):TextInput
sets this totrue
when it’s focused. Only then it receivesKeyEvent
s.horizontal-alignment
(in enumTextHorizontalAlignment
): The horizontal alignment of the text.input-type
(in enumInputType
): Use this to configureTextInput
for editing special input, such as password fields. (default value:text
)letter-spacing
(in length): The letter spacing allows changing the spacing between the glyphs. A positive value increases the spacing and a negative value decreases the distance. (default value: 0)read-only
(in bool): When set totrue
, text editing via keyboard and mouse is disabled but selecting text is still enabled as well as editing text programatically. (default value:false
)selection-background-color
(in color): The background color of the selection.selection-foreground-color
(in color): The foreground color of the selection.single-line
(in bool): When set totrue
, the text is always rendered as a single line, regardless of new line separators in the text. (default value:true
)text-cursor-width
(in length): The width of the text cursor. (default value: provided at run-time by the selected widget style)text
(in-out string): The text rendered and editable by the user.vertical-alignment
(in enumTextVerticalAlignment
): The vertical alignment of the text.wrap
(in enumTextWrap
): The way the text input wraps. Only makes sense whensingle-line
is false. (default value: no-wrap)
Functions#
focus()
Call this function to focus the text input and make it receive future keyboard events.select-all()
Selects all text.clear-selection()
Clears the selection.copy()
Copies the selected text to the clipboard.cut()
Copies the selected text to the clipboard and removes it from the editable area.paste()
Pastes the text content of the clipboard at the cursor position.
Callbacks#
accepted()
: Invoked when enter key is pressed.cursor-position-changed(
Point
)
: The cursor was moved to the new (x, y) position.edited()
: Invoked when the text has changed because the user modified it.
Example#
export component Example inherits Window {
width: 270px;
height: 100px;
TextInput {
text: "Replace me with a name";
}
}
Text
#
The Text
element is responsible for rendering text. Besides the text
property, that specifies which text to render,
it also allows configuring different visual aspects through the font-family
, font-size
, font-weight
and color
properties.
The Text
element can break long text into multiple lines of text. A line feed character (\n
) in the string of the text
property will trigger a manual line break. For automatic line breaking you need to set the wrap
property to a value other than
no-wrap
, and it’s important to specify a width
and height
for the Text
element, in order to know where to break. It’s
recommended to place the Text
element in a layout and let it set the width
and height
based on the available screen space
and the text itself.
Properties#
color
(in brush): The color of the text. (default value: depends on the style)font-family
(in string): The name of the font family selected for rendering the text.font-size
(in length): The font size of the text.font-weight
(in int): The weight of the font. The values range from 100 (lightest) to 900 (thickest). 400 is the normal weight.font-italic
(in bool): Whether or not the font face should be drawn italicized or not. (default value: false)horizontal-alignment
(in enumTextHorizontalAlignment
): The horizontal alignment of the text.letter-spacing
(in length): The letter spacing allows changing the spacing between the glyphs. A positive value increases the spacing and a negative value decreases the distance. (default value: 0)overflow
(in enumTextOverflow
): What happens when the text overflows (default value: clip).text
(in string): The text rendered.vertical-alignment
(in enumTextVerticalAlignment
): The vertical alignment of the text.wrap
(in enumTextWrap
): The way the text wraps (default value:no-wrap
).
Example#
This example shows the text “Hello World” in red, using the default font:
export component Example inherits Window {
width: 270px;
height: 100px;
Text {
x:0;y:0;
text: "Hello World";
color: red;
}
}
This example breaks a longer paragraph of text into multiple lines, by setting a wrap
policy and assigning a limited width
and enough height
for the text to flow down:
export component Example inherits Window {
width: 270px;
height: 300px;
Text {
x:0;
text: "This paragraph breaks into multiple lines of text";
wrap: word-wrap;
width: 150px;
height: 100%;
}
}
TouchArea
#
Use TouchArea
to control what happens when the region it covers is touched or interacted with
using the mouse.
When not part of a layout, its width or height default to 100% of the parent element.
Properties#
has-hover
(out bool):TouchArea
sets this totrue
when the mouse is over it.mouse-cursor
(in enumMouseCursor
): The mouse cursor type when the mouse is hovering theTouchArea
.mouse-x
,mouse-y
(out length): Set by theTouchArea
to the position of the mouse within it.pressed-x
,pressed-y
(out length): Set by theTouchArea
to the position of the mouse at the moment it was last pressed.pressed
(out bool): Set totrue
by theTouchArea
when the mouse is pressed over it.
Callbacks#
clicked()
: Invoked when clicked: The mouse is pressed, then released on this element.moved()
: The mouse has been moved. This will only be called if the mouse is also pressed.pointer-event(
PointerEvent
)
: Invoked when a button was pressed or released.
Example#
export component Example inherits Window {
width: 200px;
height: 100px;
area := TouchArea {
width: parent.width;
height: parent.height;
clicked => {
rect2.background = #ff0;
}
}
Rectangle {
x:0;
width: parent.width / 2;
height: parent.height;
background: area.pressed ? blue: red;
}
rect2 := Rectangle {
x: parent.width / 2;
width: parent.width / 2;
height: parent.height;
}
}
VerticalLayout
and HorizontalLayout
#
These layouts place their children next to each other vertically or horizontally.
The size of elements can either be fixed with the width
or height
property, or if they aren’t set
they will be computed by the layout respecting the minimum and maximum sizes and the stretch factor.
Properties#
spacing
(in length): The distance between the elements in the layout.padding
(in length): the padding within the layout.padding-left
,padding-right
,padding-top
andpadding-bottom
(in length): Set these properties to override the padding on specific sides.alignment
(in enumLayoutAlignment
): Set the alignment. Matches the CSS flex box.
Example#
export component Foo inherits Window {
width: 200px;
height: 100px;
HorizontalLayout {
spacing: 5px;
Rectangle { background: red; width: 10px; }
Rectangle { background: blue; min-width: 10px; }
Rectangle { background: yellow; horizontal-stretch: 1; }
Rectangle { background: green; horizontal-stretch: 2; }
}
}
Window
#
Window
is the root of the tree of elements that are visible on the screen.
The Window
geometry will be restricted by its layout constraints: Setting the width
will result in a fixed width,
and the window manager will respect the min-width
and max-width
so the window can’t be resized bigger
or smaller. The initial width can be controlled with the preferred-width
property. The same applies to the Window
s height.
Properties#
always-on-top
(in bool): Whether the window should be placed above all other windows on window managers supporting it.background
(in brush): The background brush of theWindow
. (default value: depends on the style)default-font-family
(in string): The font family to use as default in text elements inside this window, that don’t have theirfont-family
property set.default-font-size
(in-out length): The font size to use as default in text elements inside this window, that don’t have theirfont-size
property set. The value of this property also forms the basis for relative font sizes.default-font-weight
(in int): The font weight to use as default in text elements inside this window, that don’t have theirfont-weight
property set. The values range from 100 (lightest) to 900 (thickest). 400 is the normal weight.icon
(in image): The window icon shown in the title bar or the task bar on window managers supporting it.no-frame
(in bool): Whether the window should be borderless/frameless or not.title
(in string): The window title that is shown in the title bar.