Knob Control
Overview
Knob Control
Discussion
The Knob Inspector Control provides a means of adjusting a value over a range by rotating the Knob with mouse click, drag, or scroll. The value can also be set by editing the text field above the knob.
The mapping property can be used to map knob value to module variable directly (linear), or by converting with db20 or undb20 functions. The range of the Knob can be set using the max and min property fields.
The modVar property must be set to point to a module variable. See the ParamSet module for more detail on modVar formatting.
Module Pack
Assets
ClassID
classID =
Type Definition
Variables
Properties
| Name | Type | Default Value | Range | Description |
|---|---|---|---|---|
| modVar | string | none | Unrestricted | The module variable to control, in |
| fixedticks | int | 0 | 0 or 2:32 | If non zero, range 2-32. Default 0 causes automatic tick positions. If a number is specified exactly that many tick positions are shown |
| mapping | string | lin | lin/log/db20/undb20 | Controls the mapping between knob position and module variable |
| max | float | 24 | Unrestricted | Maximum knob value |
| min | float | -24 | Unrestricted | Minimum knob value |
| muteonmin | int | false | 0:1:1 | When true, the controlled value will be zero when the knob is at minimim |
| stepsize | float | 0 | 0: | When non-zero, specifies the granularity of adjustment |
| ticks | int | 13 | 0:32 | Max number of automatic ticks to use, ignored if fixedticks is non-zero |
| useticks | string | ticks_numbers | ticks_numbers/no ticks/ticks only | Controls display style of tick marks |
| value | float | 0 | min:max | The current value of the knob position |
| caption | string | knob | Unrestricted | A short text string to display above the knob |
| format | string | %g | Unrestricted | printf() style format string used to display numbers – see man printf(1) |
| units | string | none | Unrestricted | When not empty, displays units string below the caption |
| color.text | int | 000000 | 0:1:ffffff | Color of the text |
| edit.below | int | 0 | 0:1:1 | If true, the value edit box is shown beneath the knob instead of above |
| edit.hide | int | 0 | 0:1:1 | If true, the edit box is not shown |
| font.name | string | 'MS Shell Dlg 2' | Unrestricted | Any available Windows font may be used. All text in the inspector uses the same font |
| font.size | int | 8 | 6:1:72 | Size in points to use for the font. If the font is too large for the space available, the text will be clipped |
| font.style | string | normal | normal/bold/italic | Available styles are normal italic and bold |
| scaletext | int | false | 0:1:1 | When true, text font size scales with inspector size |
| border | int | 1 | 0:1:1 | When false, the surrounding border is turned off |
| caption.height | int | 3 | 0:1:3 | The number of vertical lines to reserve for the caption and units strings. When zero, caption is not displayed |
| color.bgnd | int | f0f0f0 | 0:1:ffffff | Color of the inspector background |
| color.border | int | b4b4b4 | 0:1:ffffff | Color of the inspector border, if shown |
| color.knobptr | int | ff410b | 0:1:ffffff | Color of the knob pointer |
| color.knobticks | int | 78909c | 0:1:ffffff | Color of the tick marks |
| knobimage | enum | img1 | img1:img5 | Chooses the style of knob image to use |
| scale | float | 1.0 | 0.5:3.0 | Specifies the magnification of all parts of the inspector. Width and height are computed from scale and other properties and can’t be manually specified |
| x | int | none | Unrestricted | Horizontal position of top left in DPI independent units |
| y | int | none | Unrestricted | Vertical position of top left in DPI independent units |
Pins
Matlab Usage
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