I am pleased to announce that I have a guide to accessibility available to download from VisionUp and I will be presenting a webcast on the subject on 26th September 2019. Registration is now open at the following link : Introducing Accessibility in Visio.
The Web Content Access Guidelines (WCAG) 2.0 provides the current recommendations for making web content accessible to users with vision impairment, but how do you test if your Visio shapes pass? There are several web sites out there that provide this capability, but all of them require the HEX values, rather than the RGB or HSL that Visio provides natively. Therefore, I have created a Visio callout shape that can be associated with a target shape to report on the values of each of its main color elements, and provides hyperlinks to automatically check the contrast ratio on WebAIM.
[Read more…] about Testing Visio shape text for WCAG 2.0 pass
The colour formats that can be selected from either the Shape Data window or the right mouse menu are:
One of the ways that Visio supports accessibility is to provide text that is read out by a screen reader, such as Windows Narrator or JAWS. This Alt Text can be set using Format Shape / Size & Properties tab using the Title and Description text boxes. The Title is the initial text that is read out when a shape is attentioned, and the Description will only read out if the user pauses. The Description text box only allows 255 characters to be entered and displayed, but this is not actually the limit![Read more…] about Narrated Text in Visio for Accessibility
Visio defaults to tabbing from shape to shape in the order that the shapes are added to the page. However, this can end up with an illogical order if you are trying to navigate a diagram with the keyboard, which is often an accessibility requirement. Fortunately, Visio provides a Diagram Navigation pane so that the tab order can be changed, but how does it do it? The following short video shows how the navigation order, displayed as numbers in each shape, is assigned a value as soon as the order is edited.
[Read more…] about Understanding Visio Navigation Order
I managed this by adding a User.visNavOrder to the master shape of all the significant masters, and a hidden Shape Data row, labelled “Navigation Order“. This has the following formula for its value:
The hardworking Microsoft Visio product development team have worked hard to almost match all of the functionality of the old server-side Visio services control, but they haven’t quite got everything. So I cheered when I hear that support for html overlays are in the roadmap to be supported! All I ask for now (almost) is layer control, and I will be very happy.
They also stated that they will be enabling all this functionality for non-SharePoint web sites in the future!
Go to http://aka.ms/voapireference got more details.