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enables pdf image scaling for CKEditor

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This commit is contained in:
sean 2017-05-02 13:25:02 +02:00
parent 2833341867
commit eb259dc5e2
1 changed files with 34 additions and 21 deletions
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55
openslides/core/static/js/core/pdf.js
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@ -99,7 +99,12 @@ angular.module('OpenSlidesApp.core.pdf', [])
var ctx = canvas.getContext("2d"); var ctx = canvas.getContext("2d");
ctx.drawImage(img, 0, 0); ctx.drawImage(img, 0, 0);
var dataURL = canvas.toDataURL("image/png"); var dataURL = canvas.toDataURL("image/png");
resolve(dataURL); var imageData = {
data: dataURL,
width: img.width,
height: img.height
};
resolve(imageData);
}; };
img.src = url; img.src = url;
}); });
@ -159,7 +164,7 @@ angular.module('OpenSlidesApp.core.pdf', [])
if (logoHeaderUrl) { if (logoHeaderUrl) {
columns.push({ columns.push({
image: imageMap[logoHeaderUrl], image: imageMap[logoHeaderUrl].data,
fit: [180, 40], fit: [180, 40],
width: '20%' width: '20%'
}); });
@ -198,7 +203,7 @@ angular.module('OpenSlidesApp.core.pdf', [])
if (logoFooterUrl) { if (logoFooterUrl) {
columns.push({ columns.push({
image: imageMap[logoFooterUrl], image: imageMap[logoFooterUrl].data,
fit: [400,50], fit: [400,50],
width: '80%' width: '80%'
}); });
@ -813,31 +818,39 @@ angular.module('OpenSlidesApp.core.pdf', [])
alreadyConverted.push(pObjectToPush); alreadyConverted.push(pObjectToPush);
break; break;
case "img": case "img":
// TODO: need a proper way to calculate the space var regex = /([\w-]*)\s*:\s*([^;]*)/g;
// left on the page. var match; //helper variable for the refegex
// This requires further information var imageSize={};
// A4 in 72dpi: 595px x 842px
var maxResolution = { var maxResolution = {
width: 435, width: 435,
height: 830 height: 830
}, };
width = parseInt(element.getAttribute("width")),
height = parseInt(element.getAttribute("height"));
if (width > maxResolution.width) { if (element.getAttribute("style")) {
var scaleByWidth = maxResolution.width/width; while ((match = regex.exec(element.getAttribute("style"))) !== null) {
width *= scaleByWidth; imageSize[match[1]] = parseInt(match[2].trim());
height *= scaleByWidth;
} }
if (height > maxResolution.height) { } else {
var scaleByHeight = maxResolution.height/height; imageSize = {
width *= scaleByHeight; height: images[element.getAttribute("src")].height,
height *= scaleByHeight; width: images[element.getAttribute("src")].width
};
}
if (imageSize.width > maxResolution.width) {
var scaleByWidth = maxResolution.width/imageSize.width;
imageSize.width *= scaleByWidth;
imageSize.height *= scaleByWidth;
}
if (imageSize.height > maxResolution.height) {
var scaleByHeight = maxResolution.height/imageSize.height;
imageSize.width *= scaleByHeight;
imageSize.height *= scaleByHeight;
} }
alreadyConverted.push({ alreadyConverted.push({
image: images[element.getAttribute("src")], image: images[element.getAttribute("src")].data,
width: width, width: imageSize.width,
height: height height: imageSize.height
}); });
break; break;
case "ul": case "ul":