Element properties

Appearance, text, layout, source, and effect properties for page elements, bulk editing, and the page's own settings.

The Properties panel shows the settings for whatever is selected on a page. Which sections appear depends on the element — a shape has appearance and layout, a text element adds font settings, an equipment symbol adds state and labels, a camera adds a source.

Layout

Not every element has every field. A line or a text element has rotation but no width and height, because its size comes from its own points.

Appearance

Visible

Visible hides an element without deleting it. On its own that’s a design convenience — but the switch also takes an expression, and that’s where it earns its place: an element that only appears when a condition holds. Show a “filter blocked” warning only while the pressure drop is high; show a summer schematic only in summer.

When an expression is driving visibility, the switch is disabled and tells you the value is controlled by an expression. Clear the expression to take manual control back.

An element inside a hidden group can’t be shown on its own — the group’s visibility wins. Show the group first.

Fill and stroke

• Fill — a solid color or a gradient.
• Stroke — the outline’s color (also solid or gradient), weight, and style (solid or dashed, with adjustable dash and gap lengths).

The color picker has two tabs, Solid and Gradient. A gradient has:

• a Type — Linear, Radial, or Conic;
• a set of Stops — click the bar to add one, drag to move it, and pick each stop’s color;
• a Blend — Smooth fades between stops; Hard switches at each stop with no fade, which is how you get crisp bands rather than a wash.

Gradients are what make a tank read as a cylinder or a duct as round, and hard blends are useful for level indicators and banded scales.

Equipment symbols are drawn in a single color and only accept a solid one, so the gradient tab isn’t offered for them.

The rest

• Opacity — from fully transparent to solid.
• Corner radius — rounds a rectangle’s corners.
• Effects — an animated accent to draw attention: Glow, Breathe, or Pulsate, each with its own Color, Spread and Duration. Use these sparingly; on a page where three things pulse, nothing stands out.

Text

Text and label elements add font settings: font (Arial, Courier New, Times New Roman, Verdana), size, style (bold, italic, underline), and alignment (left, center, right).

A page imported from elsewhere may use a font THMI doesn’t have. Those are marked (unsupported) in the font list, so you can see what to replace.

Source

A camera element has a Source section naming the Camera it shows and its own Update interval. See Cameras on a page.

State, labels, alarms, and automation

Equipment symbols add:

• a State section — Enabled, Manual, Energized, Modulating, depending on the symbol, each bindable to a tag or expression, plus an Enabled color on an LED;
• a Labels section for value labels placed around the symbol;
• an Alarms section for alarm indicators;
• an Automation section for binding the symbol to an automation rule.

Any element can also have an Events section, whose Click action runs when an operator clicks it, and trendable tags — see Interactivity.

Templates

A template on a page is one object. You move, resize, rotate, and align it as a whole, and its contents can’t be edited from the panel. The Properties panel shows:

• Layout — position, size, and rotation. Width and height keep the template’s proportions: changing one changes the other.
• Appearance — Visible, which also takes an expression, and Opacity.

There is no fill, stroke, or effect. The shapes inside a template keep their own.

Editing several elements at once

Select more than one element and the panel switches to bulk editing. It tells you how many items selected you have, and offers only the sections the whole selection has in common. Two rectangles share layout and all of appearance; a rectangle and a camera share layout and only the appearance settings both support, so fill and stroke drop out.

Where the selected elements already agree on a value, you see that value. Where they differ, you see Mixed. Setting a field applies it to every selected element; leaving a Mixed field alone leaves each element as it was.

This is the fast way to make thirty pipe segments the same weight, or to line up a row of labels, without touching each one.

Page settings

With nothing selected, the Properties panel shows the page’s own settings:

• Name and description.
• Canvas — a Size of 16:9, 9:16, 2:1 or 1:2, or Custom with your own width and height, or Infinite for a canvas with no fixed bounds. Fit to content resizes the canvas to wrap exactly around what’s on the page; right-clicking the canvas also offers Fit canvas to selection.
• Grid size and Snap to grid.
• Page-level tags, attached trends, and attached documents — the ones that become quick links for whoever views the page.

One page in a project can be set as the default page that opens first.