Sakurai/pdf.js
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Merge pull request #2381 from brendandahl/print-scale

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Use high dpi display hack for printing too.
This commit is contained in:
Yury Delendik 2012-11-16 10:53:52 -08:00
commit 5a1e32a61d
1 changed files with 18 additions and 5 deletions
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web/viewer.js
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@ -2089,12 +2089,18 @@ var PageView = function pageView(container, pdfPage, id, scale,
this.beforePrint = function pageViewBeforePrint() {
var pdfPage = this.pdfPage;
var viewport = pdfPage.getViewport(1);
// Use the same hack we use for high dpi displays for printing to get better
// output until bug 811002 is fixed in FF.
var PRINT_OUTPUT_SCALE = 2;
var canvas = this.canvas = document.createElement('canvas');
canvas.width = viewport.width;
canvas.height = viewport.height;
canvas.style.width = viewport.width + 'pt';
canvas.style.height = viewport.height + 'pt';
canvas.width = Math.floor(viewport.width) * PRINT_OUTPUT_SCALE;
canvas.height = Math.floor(viewport.height) * PRINT_OUTPUT_SCALE;
canvas.style.width = (PRINT_OUTPUT_SCALE * viewport.width) + 'pt';
canvas.style.height = (PRINT_OUTPUT_SCALE * viewport.height) + 'pt';
var cssScale = 'scale(' + (1 / PRINT_OUTPUT_SCALE) + ', ' +
(1 / PRINT_OUTPUT_SCALE) + ')';
CustomStyle.setProp('transform' , canvas, cssScale);
CustomStyle.setProp('transformOrigin' , canvas, '0% 0%');
var printContainer = document.getElementById('printContainer');
printContainer.appendChild(canvas);
@ -2102,6 +2108,13 @@ var PageView = function pageView(container, pdfPage, id, scale,
var self = this;
canvas.mozPrintCallback = function(obj) {
var ctx = obj.context;
ctx.save();
ctx.fillStyle = 'rgb(255, 255, 255)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
ctx.restore();
ctx.scale(PRINT_OUTPUT_SCALE, PRINT_OUTPUT_SCALE);
var renderContext = {
canvasContext: ctx,
viewport: viewport