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Merge pull request #5214 from CodingFabian/optimize-annotation-layer

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Improves rendering performance of annotation layers.
This commit is contained in:
Tim van der Meij 2014-12-21 16:50:36 +01:00
commit 6e994b15e2
2 changed files with 47 additions and 31 deletions
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26
src/core/annotation.js
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@ -79,12 +79,26 @@ var Annotation = (function AnnotationClosure() {
data.annotationFlags = dict.get('F');
var color = dict.get('C');
if (isArray(color) && color.length === 3) {
// TODO(mack): currently only supporting rgb; need support different
// colorspaces
data.color = color;
} else {
if (!color) {
// The PDF spec does not mention how a missing color array is interpreted.
// Adobe Reader seems to default to black in this case.
data.color = [0, 0, 0];
} else if (isArray(color)) {
switch (color.length) {
case 0:
// Empty array denotes transparent border.
data.color = null;
break;
case 1:
// TODO: implement DeviceGray
break;
case 3:
data.color = color;
break;
case 4:
// TODO: implement DeviceCMYK
break;
}
}
// Some types of annotations have border style dict which has more
@ -101,7 +115,7 @@ var Annotation = (function AnnotationClosure() {
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.
// this is consistent with the behaviour in Adobe Reader.
data.borderWidth = 0;
} else {
var dashArrayLength = dashArray.length;