Xmidymid meet parsing preserveaspectratio attribute definition

svg - Unexpected value meet parsing preserveAspectRatio attribute - Stack Overflow

xmidymid meet parsing preserveaspectratio attribute definition

It is roughly equivalent to the. * {@code preserveAspectRatio} attribute of an {@ code } element. Equivalent to preserveAspectRatio="xMidYMid meet" in an SVG. */ . That means that some of the Parse the given SVG preserveAspectRation attribute value and return an equivalent. The 'width' attribute on the outermost svg element establishes the viewport's width, a px unit as defined in CSS ([CSS21], section ) in the viewport. .. preserveAspectRatio="xMidYMid meet" viewBox="0 0 30 40" width="50" type and matrix attributes are set to values determined by parsing value as a . So a valid value for is required before the optional value meet RaphaelJS is setting preserveAspectRatio="meet" hence the Firefox.

We use the following notation for the element transform stack on a given element: TS id The id parameter is the value of the 'id' or 'xml: Similarly, we use the following notation for the transform defined by the 'transform' attribute on the given element with identifier id: Txf id With the above definition, the transformation TS of an element is equal to the product of all the transformations Txf from that element to its nearest ancestor 'svg'.

xmidymid meet parsing preserveaspectratio attribute definition

This is the product of all coordinate system transformations that apply to an element, effectively mapping the element into a coordinate system that is then transformed into device units by the SVG user agent.

Consider the following example, with a rectangle having a set of ancestor 'g' elements with IDs "g-0" to "g-n". Note that the inverse of the parent element's CTM may not always exist. In such cases, the user agent can instead calculate the CTM of the element with the constrained transformation by looking up the CTM of the rootmost 'svg' element directly.

xmidymid meet parsing preserveaspectratio attribute definition

The x and y parameters are optional. If no x and y parameters are specified, no additional translation is applied. Using the definitions provided above, and using "svg[0]" to denote the rootmost 'svg' element: Inverse of the parent's CTM: VB svg[0] CTM svg[0].

xmidymid meet parsing preserveaspectratio attribute definition

T x, y Thus, the element's CTM is: The SVG user agent viewport is a square with sides of units. T x, y CTM root. Again, the SVG user agent viewport is a square with sides of units.

T x,y CTM root.

Scalable Vector Graphics (SVG) Tiny 1.2 Specification

Note that the rectangle will not rotate with the line e. The 'viewBox' attribute provides this capability.

xmidymid meet parsing preserveaspectratio attribute definition

All elements that establish a new viewport see elements that establish viewports can have the 'viewBox' attribute specified on them. The value of this attribute takes one of two forms: If specified, an additional transformation is applied to all descendants of the given element to achieve the specified effect. There is a lot of customization to be had within this space and the more details we provide the more likely our graphics will have consistent output across browsers.

Scalable Vector Graphics (SVG) Tiny Specification

Also, the details within our SVG, like gradients or patterns, can rely heavily on the initial coordinate system that we define. When the values of each are the same, the entire image is visible and scales accordingly when the viewport dimensions are altered. It's a beautiful thing. If the SVG viewBox and viewport do not have the same width to height ratio, preserveAspectRatio indicates whether or not to force uniform scaling.

In the following examples we will look at a some cherries and the effect various preserveAspectRatio values will have on their visual output.

A Look At preserveAspectRatio in SVG

Here are the cherries set to scale uniformly with matching viewport and viewBox values. The first parameter takes two parts and directs the viewBox's alignment within the viewport, and the second is optional and indicates how the aspect ratio is to be preserved.

While meet ensures complete visibility of the graphic as much as possibleslice attempts to fill the viewport with the viewBox and will then slice off any part of the image that does not fit inside the viewport after this scaling. You can find a complete list of value combinations and their descriptions here at the W3C.