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Annotations: implement support for line annotations

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This patch implements support for line annotations. Other viewers only
show the popup annotation when hovering over the line, which may have
any orientation. To make this possible, we render an invisible line (SVG
element) over the line on the canvas that acts as the trigger for the
popup annotation. This invisible line has the same starting coordinates,
ending coordinates and width of the line on the canvas.
This commit is contained in:
Tim van der Meij 2017-04-02 20:50:17 +02:00
parent 30d63b0c50
commit e15a2ec523
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7 changed files with 125 additions and 0 deletions
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1
test/pdfs/.gitignore vendored
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@ -268,6 +268,7 @@
!annotation-strikeout.pdf
!annotation-squiggly.pdf
!annotation-highlight.pdf
!annotation-line.pdf
!annotation-fileattachment.pdf
!annotation-text-widget.pdf
!annotation-choice-widget.pdf

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test/pdfs/annotation-line.pdf Executable file
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7
test/test_manifest.json
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@ -3357,6 +3357,13 @@
"type": "eq",
"annotations": true
},
{ "id": "annotation-line",
"file": "pdfs/annotation-line.pdf",
"md5": "fde60608be2748f10fb6522cba425ca1",
"rounds": 1,
"type": "eq",
"annotations": true
},
{ "id": "annotation-fileattachment",
"file": "pdfs/annotation-fileattachment.pdf",
"md5": "d20ecee4b53c81b2dd44c8715a1b4a83",

21
test/unit/annotation_spec.js
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@ -1287,6 +1287,27 @@ describe('annotation', function() {
});
});
describe('LineAnnotation', function() {
it('should set the line coordinates', function() {
var lineDict = new Dict();
lineDict.set('Type', Name.get('Annot'));
lineDict.set('Subtype', Name.get('Line'));
lineDict.set('L', [1, 2, 3, 4]);
var lineRef = new Ref(122, 0);
var xref = new XRefMock([
{ ref: lineRef, data: lineDict, }
]);
var annotation = annotationFactory.create(xref, lineRef, pdfManagerMock,
idFactoryMock);
var data = annotation.data;
expect(data.annotationType).toEqual(AnnotationType.LINE);
expect(data.lineCoordinates).toEqual([1, 2, 3, 4]);
});
});
describe('FileAttachmentAnnotation', function() {
it('should correctly parse a file attachment', function() {
var fileStream = new StringStream(