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Fix exceptions for empty lines

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This commit is contained in:
Zihua Li
2023-05-29 21:00:37 +08:00
parent 38d9ebc5da
commit ce9bdcc53f
2 changed files with 13 additions and 0 deletions
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10
cypress/integration/rendering/sequencediagram.spec.js
View File

@@ -88,6 +88,16 @@ context('Sequence diagram', () => {
{} {}
); );
}); });
it('should handle empty lines', () => {
imgSnapshotTest(
`
sequenceDiagram
Alice->>John: Hello John<br/>
John-->>Alice: Great!
`,
{}
);
});
it('should handle line breaks and wrap annotations', () => { it('should handle line breaks and wrap annotations', () => {
imgSnapshotTest( imgSnapshotTest(
` `

3
packages/mermaid/src/utils.ts
View File

@@ -764,6 +764,9 @@ export const calculateTextDimensions: (
let cheight = 0; let cheight = 0;
const dim = { width: 0, height: 0, lineHeight: 0 }; const dim = { width: 0, height: 0, lineHeight: 0 };
for (const line of lines) { for (const line of lines) {
if (!line) {
continue;
}
const textObj = getTextObj(); const textObj = getTextObj();
textObj.text = line; textObj.text = line;
const textElem = drawSimpleText(g, textObj) const textElem = drawSimpleText(g, textObj)