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[Testing] Convert blob to proper format. Inject FileReader.

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Issue #967
This commit is contained in:
David Hudson 2016-09-12 16:58:21 +09:00
parent 0f1d685ae6
commit 3093ab8067
1 changed files with 18 additions and 12 deletions
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30
platform/features/plot/src/services/ExportImageService.js
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@ -45,7 +45,7 @@ define(
* @param {constant} EXPORT_IMAGE_TIMEOUT time in milliseconds before a timeout error is returned
* @constructor
*/
function ExportImageService($q, $timeout, $log, EXPORT_IMAGE_TIMEOUT, injHtml2Canvas, injJsPDF, injSaveAs) {
function ExportImageService($q, $timeout, $log, EXPORT_IMAGE_TIMEOUT, injHtml2Canvas, injJsPDF, injSaveAs, injFileReader) {
self.$q = $q;
self.$timeout = $timeout;
self.$log = $log;
@ -53,6 +53,7 @@ define(
self.html2canvas = injHtml2Canvas || html2canvas;
self.jsPDF = injJsPDF || jsPDF;
self.saveAs = injSaveAs || saveAs;
self.reader = injFileReader || new FileReader();
}
/**
@ -64,8 +65,14 @@ define(
*/
function renderElement(element, type) {
var defer = self.$q.defer(),
validTypes = ["png", "jpg", "jpeg"],
renderTimeout;
if (validTypes.indexOf(type) === -1) {
self.$log.error("Invalid type requested. Try: (" + validTypes.join(",") + ")");
return;
}
renderTimeout = self.$timeout(function () {
defer.reject("html2canvas timed out");
self.$log.warn("html2canvas timed out");
@ -75,18 +82,14 @@ define(
self.html2canvas(element, {
onrendered: function (canvas) {
switch (type.toLowerCase()) {
case "blob":
canvas.toBlob(defer.resolve);
break;
case "png":
defer.resolve(canvas.toDataURL("image/png", 1.0));
canvas.toBlob(defer.resolve, "image/png");
break;
default:
case "jpg":
case "jpeg":
defer.resolve(canvas.toDataURL("image/jpeg", 1.0));
canvas.toBlob(defer.resolve, "image/jpeg");
break;
}
}
@ -133,9 +136,12 @@ define(
*/
ExportImageService.prototype.exportPDF = function (element, filename) {
return renderElement(element, "jpeg").then(function (img) {
var pdf = new self.jsPDF("l", "px", [element.offsetHeight, element.offsetWidth]);
pdf.addImage(img, "JPEG", 0, 0, element.offsetWidth, element.offsetHeight);
pdf.save(filename);
self.reader.readAsDataURL(img);
self.reader.onloadend = function() {
var pdf = new self.jsPDF("l", "px", [element.offsetHeight, element.offsetWidth]);
pdf.addImage(reader.result, "JPEG", 0, 0, element.offsetWidth, element.offsetHeight);
pdf.save(filename);
};
});
};
@ -146,7 +152,7 @@ define(
* @returns {promise}
*/
ExportImageService.prototype.exportJPG = function (element, filename) {
return renderElement(element, "blob").then(function (img) {
return renderElement(element, "jpeg").then(function (img) {
self.saveAs(img, filename);
});
};
@ -158,7 +164,7 @@ define(
* @returns {promise}
*/
ExportImageService.prototype.exportPNG = function (element, filename) {
return renderElement(element, "blob").then(function (img) {
return renderElement(element, "png").then(function (img) {
self.saveAs(img, filename);
});
};