Todos los elementos de las páginas Web se definen dentro de una caja rectangular. Sin embargo, eso no significa que tengamos que hacer que todo parezca una caja. Puedes usar el CSS clip-path property to crop parts of an image or other element, to create interesting effects.
In the example above, the balloon image is square (source). Using clip-path and the basic form value of circle ()
the extra sky around the globe is cut out leaving a circular image on the page.
Como la imagen es un link, puede ver algo más sobre el clip-path property. Only the visible area of the image can be clicked, as events are not fired in hidden parts of the image.
El recorte se puede aplicar a cualquier elemento HTML, no solo a imágenes. Hay algunas formas diferentes de crear un clip-path, en este post los veremos.
Compatibilidad del browser
Apart from the values in the table as explained later in the post, the various values of clip-path proven to have excellent browser support. Para los browsers heredados, una alternativa puede ser permitir que el navegador ignore la clip-path property and display the image without cropping. If this is a problem, you can try it clip-path in a function query and offer an alternative layout for unsupported browsers.
@supports(clip-path: circle(45%) {
}Basic shapes
the clip-path The property can take several values. The value used in the initial example was circle (). This is one of the basic shape values, which are defined in the
CSS shape specification. This means that you can crop an area and also use the same value for shape-outside to make the text conform to that shape.
Note that CSS shapes can only be applied to floating elements. the clip-path The property does not require the element to be floating.
The full list of basic shapes is:
inset ()
the inset () value inserts the clipped area from the edge of the element and values can be passed for the top, right, bottom, and left edges. A border-radius It can also be added to curve the corners of the cropped area, using the round keyword.
In my example I have two boxes both with a class of .box. The first frame has no clipping, the second one is trimmed using inset () values.
circle ()
As you have seen, the circle () El valor crea un área circular recortada. El primer valor es una longitud o un porcentaje y es el radio del círculo. Un segundo valor opcional le permite establecer el centro del círculo. En el siguiente ejemplo, estoy usando valores de keywords para configurar mi círculo recortado en la parte superior derecha. También puede utilizar longitudes o porcentajes.
Watch out for flat edges!
Note that with all these values the shape will be clipped by the element's margin box. If you create a circle in an image and that shape will extend outside the natural size of the image, you will get a flat edge.
circle (50%) applied. Since the image is not square, we press the margin box at the top and bottom and the circle is cropped.ellipse ()
An ellipse is essentially a squashed circle, so it acts very similar to circle () but it accepts a radius for x and a radius for y, plus the value of the center of the ellipse.
polygon ()
the polygon () value can help you create quite complex shapes, defining as many points as you need, setting the coordinates of each point.
To help you create polygons and see what is possible, see Clippy, a clip-path generator, then copy and paste the code into your own project.
Shapes from cash values
Also defined in CSS Forms are forms of cash values. Estos se relacionan con el modelo de cuadro CSS: el cuadro de contents, el cuadro de relleno, el cuadro de borde y el cuadro de margen con valores de palabra clave de content-box, border-box, padding-boxand margin-box.
These values can be used alone or in conjunction with a basic shape to define the reference frame used by the shape. For example, the following would clip the shape to the edge of the content.
.box {
clip-path: content-box;
}In this example, the circle would use the content-box as a reference chart instead of margin-box (which is the default).
.box {
clip-path: circle(45%) content-box;
}Currently, browsers do not support the use of box values for clip-path property. Are compatible with shape-outside Nevertheless.
Using an SVG element
To have more control over the cropped area than is possible with basic shapes, use an SVG clipPath element. Then reference that ID, using url () as the value of clip-path.
Animating the cropped area
CSS transitions and animations can be applied to the clip-path to create some cool effects. In the example below, I am animating a circle by hovering over the transition between two circles with a different radius value.
There are many creative ways that animation can be used with clipping.
Animating with clip-path on CSS Tricks goes through some ideas.
Photo by Matthew henry in Burst.
