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the "hieght" and the 72dpi<->96dpi fixes
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29d0d8a8a9
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5ece4da552
8 changed files with 48 additions and 27 deletions
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@ -29,11 +29,15 @@ var PDFViewer = {
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scale: 1.0,
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pageWidth: function(page) {
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return page.mediaBox[2] * PDFViewer.scale;
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var pdfToCssUnitsCoef = 96.0 / 72.0;
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var width = (page.mediaBox[2] - page.mediaBox[0]);
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return width * PDFViewer.scale * pdfToCssUnitsCoef;
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},
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pageHeight: function(page) {
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return page.mediaBox[3] * PDFViewer.scale;
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var pdfToCssUnitsCoef = 96.0 / 72.0;
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var height = (page.mediaBox[3] - page.mediaBox[1]);
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return height * PDFViewer.scale * pdfToCssUnitsCoef;
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},
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lastPagesDrawn: [],
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@ -106,10 +110,11 @@ var PDFViewer = {
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canvas.id = 'thumbnail' + num;
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canvas.mozOpaque = true;
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// Canvas dimensions must be specified in CSS pixels. CSS pixels
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// are always 96 dpi. These dimensions are 8.5in x 11in at 96dpi.
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canvas.width = 104;
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canvas.height = 134;
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var pageWidth = PDFViewer.pageWidth(page);
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var pageHeight = PDFViewer.pageHeight(page);
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var thumbScale = Math.min(104 / pageWidth, 134 / pageHeight);
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canvas.width = pageWidth * thumbScale;
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canvas.height = pageHeight * thumbScale;
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div.appendChild(canvas);
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var ctx = canvas.getContext('2d');
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@ -175,8 +180,6 @@ var PDFViewer = {
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canvas.id = 'page' + num;
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canvas.mozOpaque = true;
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// Canvas dimensions must be specified in CSS pixels. CSS pixels
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// are always 96 dpi. These dimensions are 8.5in x 11in at 96dpi.
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canvas.width = PDFViewer.pageWidth(page);
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canvas.height = PDFViewer.pageHeight(page);
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div.appendChild(canvas);
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