Supported Shapes
Add the final level 1 section, with the following integrated.- path() =
path( [<
>,]? < > ) -
-
<
> - The filling rule used to determine the interior of the path. See fill-rule property in SVG for details. Possible values are ''nonzero'' or ''evenodd''. Default value when omitted is ''nonzero''. -
The
represents an SVG Path data string. The path data string must be conform to the grammar and parsing rules of SVG 1.1. The initial position is defined by the first “move to” argument in the path string. For the initial direction follow SVG 1.1.
-
<
Issue-16448
Should we revisit the decision to not allow SVG path syntax in the shape-inside, shape-outside properties
Referencing SVG shapes
An SVG shape can be referenced using the url() syntax.
The shape can be any
of the SVG basic shapes
or a path element.
<style>
div {
height: 400px;
width: 400px;
}
.in-a-circle {
shape-outside: url(#circle_shape);
}
.in-a-path {
shape-outside: url(#path-shape);
}
</style>
<svg ...>
<circle id="circle_shape" cx="50%" cy="50%" r="50%" />
<path id="path-shape" d="M 100 100 L 300 100 L 200 300 z" />
</svg>
<div class="around-a-circle">...</div>
<div class="around-a-path">...</div>
Shapes from Image
Add the final
level 1
section.
Issue: One suggestion
is to define a shape based on an element's rendered content.
This could have security implications.
Issue: Another suggestion
is to add something to an image() function
that determines the relevant pixels to use
(both for defining a shape and for display).
Shapes from Box Values
Add the final
level 1
section.
Declaring Shapes
A shape can be declared with
the 'shape-outside' property,
with possible modifications
from the 'shape-margin' property.
The shape defined by
the 'shape-outside'
and 'shape-margin' properties
changes the geometry
of a float element's
float area
and an exclusion element's
exclusion area.
A shape can be declared with
the 'shape-inside' property,
with possible modifications
from the 'shape-padding' property.
The shape defined by
the 'shape-inside'
and 'shape-padding' properties
defines an exclusion area
that contributes
to the element's wrapping context.
The 'shape-inside' property applies
to all block-level elements.
The red box illustrates
an exclusion element's content box,
which is unmodified and subject
to normal CSS positioning
(here absolute positioning).
<style type="text/css">
.exclusion {
wrap-flow: both;
position: absolute;
top: 25%;
left: 25%;
width: 50%;
height: 50%;
shape-outside: circle(50% at 50% 50%);
border: 1px solid red;
}
</style>
<div style=”position: relative;”>
<div class=”exclusion”></div>
Lorem ipsum dolor sit amet...
</div>
The 'shape-outside' Property
Add the final
level 1
section with the change that
shape-outside applies
to block-level elements
and has an effect
if the element
is an exclusion.
The 'shape-inside' Property
The 'shape-inside' property adds
one or more exclusion areas
to the element's wrapping context.
This modifies the normal rectangular shape
of the content area
to a possibly non-rectangular wrapping area.
The exclusion areas
are defined by subtracting the shape
from the element's content area.
Any part of the shape outside
the element's content area
has no effect.
Name: shape-inside
Value: auto | outside-shape | [ <> || shape-box ] | <> | display
Initial: auto
Applies To: block-level elements
Inherited: no
Computed Value: computed lengths for <>, the absolute URI for <>, otherwise as specified
Media: visual
Animatable: as specified for <>, otherwise no
The values of this property have the following meanings:
- ''auto''
-
The shape is computed based on the content box of the element.
- ''outside-shape''
-
The shape is computed based on
the shape defined by the shape-outside
and shape-margin properties.
- <basic-shape>
-
The shape is computed based
on the values of one of
''inset()'', ''circle()'', ''ellipse()'' or ''polygon()''.
- <uri>
-
If the <uri> references an SVG shape element,
that element defines the shape.
Otherwise, if the <uri> references an image,
the shape is extracted and computed
based on the alpha channel
of the specified image.
If the <uri> does not reference
an SVG shape element or an image,
the effect is as if the value ''auto'' had been specified.
- ''display''
-
The shape is computed based on the shape of the display
as described in css-round-display.
The 'shape-inside' property applies to floats.
The 'shape-inside' property may not apply on some elements
such as elements with a computed 'display' value of ''display/table''.
Effect of shape-inside on inline content.
Overflow content avoids
the exclusion area(s) added
by 'shape-inside' and 'shape-padding'
(as well as any other exclusion areas
in the element's wrapping context).
In other words,
overflow continues outside
the rectangular bounds of the element.
Overflow interacting with exclusion areas defined
by 'shape-inside' and 'shape-padding'.
Issue: improve the illustration above,
using text to show overflow instead of greeked boxes.
When a shape-inside has a definite size
(no percentages used in the shape's definition)
an auto-sized element should use the shape
as a constraint in determining its maximum size.
The shape-image-threshold Property
Add the final
level 1
section with the change that
it applies to both shape-inside
and shape-outside.
The shape-image-source-type Property
Should we add an alpha/luminance switch
to determine which values we use
from the shape-image source?
This could just be a keyword
on the shape-image-threshold property.
Whatever we go with should be compatible
with the alpha/luminance switch from mask sources.
The 'shape-margin' property
Add the final
level 1
section with the change that it applies to exclusions.
The 'shape-padding' Property
The 'shape-padding' property adds padding to a shape-inside.
This defines a new shape where every point
is the specified distance from the shape-inside.
This property takes on positive values only.
Name: shape-padding
Value: <>
Initial: none
Applies To: block-level elements
Inherited: no
Computed Value: the absolute length
Media: visual
Animatable: as length, percentage, or calc
A 'shape-padding' creating an offset
from a circlular shape-inside.
The light blue rectangles represent
inline content affected
by the shape created
by the padding.
Note: The 'shape-padding' property
only affects layout of content
inside the element it applies to
while the 'shape-margin' property
only affects layout of content
outside the element.
<style>
div {
height: 400px;
width: 400px;
}
.in-a-circle {
shape-outside: url(#circle_shape);
}
.in-a-path {
shape-outside: url(#path-shape);
}
</style>
<svg ...>
<circle id="circle_shape" cx="50%" cy="50%" r="50%" />
<path id="path-shape" d="M 100 100 L 300 100 L 200 300 z" />
</svg>
<div class="around-a-circle">...</div>
<div class="around-a-path">...</div>
Shapes from Box Values
Add the final level 1 section.
Declaring Shapes
A shape can be declared with
the 'shape-outside' property,
with possible modifications
from the 'shape-margin' property.
The shape defined by
the 'shape-outside'
and 'shape-margin' properties
changes the geometry
of a float element's
float area
and an exclusion element's
exclusion area.
A shape can be declared with
the 'shape-inside' property,
with possible modifications
from the 'shape-padding' property.
The shape defined by
the 'shape-inside'
and 'shape-padding' properties
defines an exclusion area
that contributes
to the element's wrapping context.
The 'shape-inside' property applies
to all block-level elements.
The red box illustrates
an exclusion element's content box,
which is unmodified and subject
to normal CSS positioning
(here absolute positioning).
<style type="text/css">
.exclusion {
wrap-flow: both;
position: absolute;
top: 25%;
left: 25%;
width: 50%;
height: 50%;
shape-outside: circle(50% at 50% 50%);
border: 1px solid red;
}
</style>
<div style=”position: relative;”>
<div class=”exclusion”></div>
Lorem ipsum dolor sit amet...
</div>
The 'shape-outside' Property
Add the final
level 1
section with the change that
shape-outside applies
to block-level elements
and has an effect
if the element
is an exclusion.
The 'shape-inside' Property
The 'shape-inside' property adds
one or more exclusion areas
to the element's wrapping context.
This modifies the normal rectangular shape
of the content area
to a possibly non-rectangular wrapping area.
The exclusion areas
are defined by subtracting the shape
from the element's content area.
Any part of the shape outside
the element's content area
has no effect.
Name: shape-inside
Value: auto | outside-shape | [ <> || shape-box ] | <> | display
Initial: auto
Applies To: block-level elements
Inherited: no
Computed Value: computed lengths for <>, the absolute URI for <>, otherwise as specified
Media: visual
Animatable: as specified for <>, otherwise no
The values of this property have the following meanings:
- ''auto''
-
The shape is computed based on the content box of the element.
- ''outside-shape''
-
The shape is computed based on
the shape defined by the shape-outside
and shape-margin properties.
- <basic-shape>
-
The shape is computed based
on the values of one of
''inset()'', ''circle()'', ''ellipse()'' or ''polygon()''.
- <uri>
-
If the <uri> references an SVG shape element,
that element defines the shape.
Otherwise, if the <uri> references an image,
the shape is extracted and computed
based on the alpha channel
of the specified image.
If the <uri> does not reference
an SVG shape element or an image,
the effect is as if the value ''auto'' had been specified.
- ''display''
-
The shape is computed based on the shape of the display
as described in css-round-display.
The 'shape-inside' property applies to floats.
The 'shape-inside' property may not apply on some elements
such as elements with a computed 'display' value of ''display/table''.
Effect of shape-inside on inline content.
Overflow content avoids
the exclusion area(s) added
by 'shape-inside' and 'shape-padding'
(as well as any other exclusion areas
in the element's wrapping context).
In other words,
overflow continues outside
the rectangular bounds of the element.
Overflow interacting with exclusion areas defined
by 'shape-inside' and 'shape-padding'.
Issue: improve the illustration above,
using text to show overflow instead of greeked boxes.
When a shape-inside has a definite size
(no percentages used in the shape's definition)
an auto-sized element should use the shape
as a constraint in determining its maximum size.
The shape-image-threshold Property
Add the final
level 1
section with the change that
it applies to both shape-inside
and shape-outside.
The shape-image-source-type Property
Should we add an alpha/luminance switch
to determine which values we use
from the shape-image source?
This could just be a keyword
on the shape-image-threshold property.
Whatever we go with should be compatible
with the alpha/luminance switch from mask sources.
The 'shape-margin' property
Add the final
level 1
section with the change that it applies to exclusions.
The 'shape-padding' Property
The 'shape-padding' property adds padding to a shape-inside.
This defines a new shape where every point
is the specified distance from the shape-inside.
This property takes on positive values only.
Name: shape-padding
Value: <>
Initial: none
Applies To: block-level elements
Inherited: no
Computed Value: the absolute length
Media: visual
Animatable: as length, percentage, or calc
A 'shape-padding' creating an offset
from a circlular shape-inside.
The light blue rectangles represent
inline content affected
by the shape created
by the padding.
Note: The 'shape-padding' property
only affects layout of content
inside the element it applies to
while the 'shape-margin' property
only affects layout of content
outside the element.
<style type="text/css">
.exclusion {
wrap-flow: both;
position: absolute;
top: 25%;
left: 25%;
width: 50%;
height: 50%;
shape-outside: circle(50% at 50% 50%);
border: 1px solid red;
}
</style>
<div style=”position: relative;”>
<div class=”exclusion”></div>
Lorem ipsum dolor sit amet...
</div>
The 'shape-inside' Property
The 'shape-inside' property adds
one or more exclusion areas
to the element's wrapping context.
This modifies the normal rectangular shape
of the content area
to a possibly non-rectangular wrapping area.
The exclusion areas
are defined by subtracting the shape
from the element's content area.
Any part of the shape outside
the element's content area
has no effect.
Name: shape-inside
Value: auto | outside-shape | [ <> || shape-box ] | <> | display
Initial: auto
Applies To: block-level elements
Inherited: no
Computed Value: computed lengths for <>, the absolute URI for <>, otherwise as specified
Media: visual
Animatable: as specified for <>, otherwise no
The values of this property have the following meanings:
- ''auto''
-
The shape is computed based on the content box of the element.
- ''outside-shape''
-
The shape is computed based on
the shape defined by the shape-outside
and shape-margin properties.
- <basic-shape>
-
The shape is computed based
on the values of one of
''inset()'', ''circle()'', ''ellipse()'' or ''polygon()''.
- <uri>
-
If the <uri> references an SVG shape element,
that element defines the shape.
Otherwise, if the <uri> references an image,
the shape is extracted and computed
based on the alpha channel
of the specified image.
If the <uri> does not reference
an SVG shape element or an image,
the effect is as if the value ''auto'' had been specified.
- ''display''
-
The shape is computed based on the shape of the display
as described in css-round-display.
The 'shape-inside' property applies to floats.
The 'shape-inside' property may not apply on some elements
such as elements with a computed 'display' value of ''display/table''.
Effect of shape-inside on inline content.
Overflow content avoids
the exclusion area(s) added
by 'shape-inside' and 'shape-padding'
(as well as any other exclusion areas
in the element's wrapping context).
In other words,
overflow continues outside
the rectangular bounds of the element.
Overflow interacting with exclusion areas defined
by 'shape-inside' and 'shape-padding'.
Issue: improve the illustration above,
using text to show overflow instead of greeked boxes.
When a shape-inside has a definite size
(no percentages used in the shape's definition)
an auto-sized element should use the shape
as a constraint in determining its maximum size.
The shape-image-threshold Property
Add the final
level 1
section with the change that
it applies to both shape-inside
and shape-outside.
The shape-image-source-type Property
Should we add an alpha/luminance switch
to determine which values we use
from the shape-image source?
This could just be a keyword
on the shape-image-threshold property.
Whatever we go with should be compatible
with the alpha/luminance switch from mask sources.
The 'shape-margin' property
Add the final
level 1
section with the change that it applies to exclusions.
The 'shape-padding' Property
The 'shape-padding' property adds padding to a shape-inside.
This defines a new shape where every point
is the specified distance from the shape-inside.
This property takes on positive values only.
Name: shape-padding
Value: <>
Initial: none
Applies To: block-level elements
Inherited: no
Computed Value: the absolute length
Media: visual
Animatable: as length, percentage, or calc
A 'shape-padding' creating an offset
from a circlular shape-inside.
The light blue rectangles represent
inline content affected
by the shape created
by the padding.
Note: The 'shape-padding' property
only affects layout of content
inside the element it applies to
while the 'shape-margin' property
only affects layout of content
outside the element.
Effect of shape-inside on inline content.
Overflow interacting with exclusion areas defined by 'shape-inside' and 'shape-padding'.
The shape-image-source-type Property
Should we add an alpha/luminance switch
to determine which values we use
from the shape-image source?
This could just be a keyword
on the shape-image-threshold property.
Whatever we go with should be compatible
with the alpha/luminance switch from mask sources.
The 'shape-margin' property
Add the final
level 1
section with the change that it applies to exclusions.
The 'shape-padding' Property
The 'shape-padding' property adds padding to a shape-inside.
This defines a new shape where every point
is the specified distance from the shape-inside.
This property takes on positive values only.
Name: shape-padding
Value: <>
Initial: none
Applies To: block-level elements
Inherited: no
Computed Value: the absolute length
Media: visual
Animatable: as length, percentage, or calc
A 'shape-padding' creating an offset
from a circlular shape-inside.
The light blue rectangles represent
inline content affected
by the shape created
by the padding.
Note: The 'shape-padding' property
only affects layout of content
inside the element it applies to
while the 'shape-margin' property
only affects layout of content
outside the element.
The 'shape-padding' Property
The 'shape-padding' property adds padding to a shape-inside.
This defines a new shape where every point
is the specified distance from the shape-inside.
This property takes on positive values only.
Name: shape-padding
Value: <>
Initial: none
Applies To: block-level elements
Inherited: no
Computed Value: the absolute length
Media: visual
Animatable: as length, percentage, or calc
A 'shape-padding' creating an offset
from a circlular shape-inside.
The light blue rectangles represent
inline content affected
by the shape created
by the padding.
Note: The 'shape-padding' property
only affects layout of content
inside the element it applies to
while the 'shape-margin' property
only affects layout of content
outside the element.
A 'shape-padding' creating an offset from a circlular shape-inside. The light blue rectangles represent inline content affected by the shape created by the padding.