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Refactor code for annotations

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This commit is contained in:
Mack Duan 2013-03-21 01:04:44 -07:00
parent e5b5c94925
commit f8f4b3f45d
39 changed files with 667 additions and 499 deletions
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94
src/evaluator.js
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@ -504,10 +504,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
var promise = new Promise();
var fontRes = resources.get('Font');
if (!fontRes) {
warn('fontRes not available');
}
assert(fontRes, 'fontRes not available');
font = xref.fetchIfRef(font) || fontRes.get(fontName);
font = xref.fetchIfRef(font) || (fontRes && fontRes.get(fontName));
if (!isDict(font)) {
++this.idCounters.font;
promise.resolve({
@ -828,93 +829,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
return promise;
},
getAnnotationsOperatorList:
function PartialEvaluator_getAnnotationsOperatorList(annotations,
dependency) {
var promise = new Promise();
// 12.5.5: Algorithm: Appearance streams
function getTransformMatrix(rect, bbox, matrix) {
var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix);
var minX = bounds[0];
var minY = bounds[1];
var maxX = bounds[2];
var maxY = bounds[3];
var width = rect[2] - rect[0];
var height = rect[3] - rect[1];
var xRatio = width / (maxX - minX);
var yRatio = height / (maxY - minY);
return [
xRatio,
0,
0,
yRatio,
rect[0] - minX * xRatio,
rect[1] - minY * yRatio
];
}
var opListPromises = [];
var includedAnnotations = [];
// deal with annotations
for (var i = 0, length = annotations.length; i < length; ++i) {
var annotation = annotations[i];
// check whether we can visualize annotation
if (!annotation ||
!annotation.annotationFlags ||
(annotation.annotationFlags & 0x0022) || // Hidden or NoView
!annotation.rect || // rectangle is nessessary
!annotation.appearance) { // appearance is nessessary
continue;
}
includedAnnotations.push(annotation);
if (annotation.appearance) {
var opListPromise = this.getOperatorList(annotation.appearance,
annotation.resources);
opListPromises.push(opListPromise);
} else {
var opListPromise = new Promise();
opListPromise.resolve(createOperatorList());
opListPromises.push(opListPromise);
}
}
Promise.all(opListPromises).then(function(datas) {
var fnArray = [];
var argsArray = [];
var dependencies = {};
for (var i = 0, n = datas.length; i < n; ++i) {
var annotation = includedAnnotations[i];
var data = datas[i];
// apply rectangle
var rect = annotation.rect;
var bbox = annotation.bbox;
var matrix = annotation.matrix;
var transform = getTransformMatrix(rect, bbox, matrix);
var border = annotation.border;
fnArray.push('beginAnnotation');
argsArray.push([rect, transform, matrix, border]);
Util.concatenateToArray(fnArray, data.queue.fnArray);
Util.concatenateToArray(argsArray, data.queue.argsArray);
Util.extendObj(dependencies, data.dependencies);
fnArray.push('endAnnotation');
argsArray.push([]);
}
promise.resolve(createOperatorList(fnArray, argsArray, dependencies));
});
return promise;
},
getTextContent: function PartialEvaluator_getTextContent(
stream, resources) {