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Merge pull request #2980 from emanuelschuetze/pdf-worker-fix

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Fixed placeholder replacement in pdf worker.
This commit is contained in:
Norman Jäckel 2017-02-17 16:29:09 +01:00 committed by GitHub
commit 935a2a7245
1 changed files with 62 additions and 48 deletions
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110
openslides/core/static/js/core/pdf-worker.js
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@ -27,6 +27,66 @@ pdfMake.fonts = {
}
};
// Function to replace layout placeholder
//
// Workaround for using table layout functions.
// TODO: Needs improvement of pdfmake's web worker support.
// Currently only functions are allowed for 'layout'.
// But functions cannot be passed to workers (via JSON).
var replacePlaceholder = function (content) {
for (var i = 0; i < content.length; i++) {
if (typeof content[i] === 'object') {
// motion meta table border lines
if (content[i].layout === "{{motion-placeholder-to-insert-functions-here}}") {
content[i].layout = {
hLineWidth: function(i, node) {
return (i === 0 || i === node.table.body.length) ? 0 : 0.5;
},
vLineWidth: function() {
return 0;
},
hLineColor: function() {
return 'white';
}
};
return true;
}
// ballot paper crop marks
if (content[i].layout === "{{ballot-placeholder-to-insert-functions-here}}") {
content[i].layout = {
hLineWidth: function(i, node) {
if (i === 0){
return 0;
} else if (i === node.table.body.length) {
if (node.rowsperpage && node.rowsperpage > i) {
return 0.5;
} else {
return 0;
}
} else {
return 0.5;
}
},
vLineWidth: function(i, node) {
return (i === 0 || i === node.table.widths.length) ? 0 : 0.5;
},
hLineColor: function() {
return 'gray';
},
vLineColor: function() {
return 'gray';
}
};
return true;
}
replacePlaceholder(content[i]);
}
}
};
// Create PDF on message and return the base64 decoded document
self.addEventListener('message', function(e) {
var data = JSON.parse(e.data);
@ -49,54 +109,8 @@ self.addEventListener('message', function(e) {
};
}
// Workaround for using table layout functions.
// TODO: Needs improvement of pdfmake's web worker support.
// Currently only functions are allowed for 'layout'.
// But functions cannot be passed to workers (via JSON).
//
// ballot paper crop marks
for (var i = 0; i < data.content.length; i++) {
if (data.content[i].layout === "{{ballot-placeholder-to-insert-functions-here}}") {
data.content[i].layout = {
hLineWidth: function(i, node) {
if (i === 0){
return 0;
} else if (i === node.table.body.length) {
if (node.rowsperpage && node.rowsperpage > i) {
return 0.5;
} else {
return 0;
}
} else {
return 0.5;
}
},
vLineWidth: function(i, node) {
return (i === 0 || i === node.table.widths.length) ? 0 : 0.5;
},
hLineColor: function() {
return 'gray';
},
vLineColor: function() {
return 'gray';
}
};
}
// motion meta table border lines
if (data.content[i].layout === "{{motion-placeholder-to-insert-functions-here}}") {
data.content[i].layout = {
hLineWidth: function(i, node) {
return (i === 0 || i === node.table.body.length) ? 0 : 0.5;
},
vLineWidth: function() {
return 0;
},
hLineColor: function() {
return 'white';
}
};
}
}
replacePlaceholder(data.content);
var pdf = pdfMake.createPdf(data);
pdf.getBase64(function (base64) {
self.postMessage(base64);