Previously, messages and notes that had multiple lines (via `<br>`-tags) were only displayed correctly
when using the default `center` value for the `messageAlign` and `noteAlign` configuration options.
Using `left` or `right` for the alignment options caused the text to collapse and become illegible,
as outlined in issue #3011.
This comes as a side-effect from how the internal `valign` text-rendering option was configured for
messages and notes:
```js
// Example from `sequenceRenderer.js: drawMessage()`
textObj.anchor = conf.messageAlign;
textObj.valign = conf.messageAlign;
```
Both the `anchor` option (which controls left-right alignment) and the `valign` option (which controls
vertical top-down placement) were set to the same value, the user-provided `messageAlign` config option.
While `left` and `right` are valid values for the `anchor` option, they were effectively no-ops for the
`valign` option, which only supports `top`, `start`, `middle`, `center`, `bottom`, and `end`.
To fix the issue, the `valign` property is now always set to `center` for notes and messages.
Similarly, the `dominantBaseline` option of texts is now always set to `middle`, rather than setting it to
either `text-{before,after}-edge`, which caused left-aligned multi-line text to always be "top-left" aligned
inside a note (or "bottom-right" when attempting to right-align).
Now, texts in messages and notes are always vertically centered and alignment options correctly apply for
both single and multi-line content.
updateElementStyle and UpdateElementStyle are written in the diagram last part. updateElementStyle is inconsistent with the original definition and updates the style of the relationship, including the offset of the text label relative to the original position.
- [ ] Custom tags/stereotypes support and skinparam updates
- - [ ] AddElementTag(tagStereo, ?bgColor, ?fontColor, ?borderColor, ?shadowing, ?shape, ?sprite, ?techn, ?legendText, ?legendSprite): Introduces a new element tag. The styles of the tagged elements are updated and the tag is displayed in the calculated legend.
- - [ ] AddRelTag(tagStereo, ?textColor, ?lineColor, ?lineStyle, ?sprite, ?techn, ?legendText, ?legendSprite): Introduces a new Relationship tag. The styles of the tagged relationships are updated and the tag is displayed in the calculated legend.
- - [X] UpdateElementStyle(elementName, ?bgColor, ?fontColor, ?borderColor, ?shadowing, ?shape, ?sprite, ?techn, ?legendText, ?legendSprite): This call updates the default style of the elements (component, ...) and creates no additional legend entry.
- - [X] UpdateRelStyle(from, to, textColor, lineColor, ?offsetX, ?offsetY): This call updates the default relationship colors and creates no additional legend entry. Two new parameters, offsetX and offsetY, are added to set the offset of the original position of the text.
- - [ ] RoundedBoxShape(): This call returns the name of the rounded box shape and can be used as ?shape argument.
- - [ ] EightSidedShape(): This call returns the name of the eight sided shape and can be used as ?shape argument.
- - [ ] DashedLine(): This call returns the name of the dashed line and can be used as ?lineStyle argument.
- - [ ] DottedLine(): This call returns the name of the dotted line and can be used as ?lineStyle argument.
- - [ ] BoldLine(): This call returns the name of the bold line and can be used as ?lineStyle argument.
- - [X] UpdateLayoutConfig(?c4ShapeInRow, ?c4BoundaryInRow): New. This call updates the default c4ShapeInRow(4) and c4BoundaryInRow(2).
