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Handle more cases of invalid line dash patterns in annotation borders

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This commit is contained in:
Jonas Jenwald 2014-05-09 23:12:23 +02:00
parent e359f0694f
commit 67a3b59864
1 changed files with 23 additions and 17 deletions
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40
src/shared/annotation.js
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@ -105,24 +105,30 @@ var Annotation = (function AnnotationClosure() {
// TODO: implement proper support for annotations with line dash patterns.
var dashArray = borderArray[3];
if (data.borderWidth > 0 && dashArray && isArray(dashArray)) {
var dashArrayLength = dashArray.length;
if (dashArrayLength > 0) {
// According to the PDF specification: the elements in a dashArray
// shall be numbers that are nonnegative and not all equal to zero.
var isInvalid = false;
var numPositive = 0;
for (var i = 0; i < dashArrayLength; i++) {
var validNumber = (+dashArray[i] >= 0);
if (!validNumber) {
isInvalid = true;
break;
} else if (dashArray[i] > 0) {
numPositive++;
if (data.borderWidth > 0 && dashArray) {
if (!isArray(dashArray)) {
// Ignore the border if dashArray is not actually an array,
// this is consistent with the behaviour in Adobe Reader.
data.borderWidth = 0;
} else {
var dashArrayLength = dashArray.length;
if (dashArrayLength > 0) {
// According to the PDF specification: the elements in a dashArray
// shall be numbers that are nonnegative and not all equal to zero.
var isInvalid = false;
var numPositive = 0;
for (var i = 0; i < dashArrayLength; i++) {
var validNumber = (+dashArray[i] >= 0);
if (!validNumber) {
isInvalid = true;
break;
} else if (dashArray[i] > 0) {
numPositive++;
}
}
if (isInvalid || numPositive === 0) {
data.borderWidth = 0;
}
}
if (isInvalid || numPositive === 0) {
data.borderWidth = 0;
}
}
}