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@ -2005,6 +2005,18 @@ var PDFViewer = (function pdfViewer() {
@@ -2005,6 +2005,18 @@ var PDFViewer = (function pdfViewer() {
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}; |
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} |
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function isSameScale(oldScale, newScale) { |
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if (newScale === oldScale) { |
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return true; |
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} |
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if (Math.abs(newScale - oldScale) < 1e-15) { |
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// Prevent unnecessary re-rendering of all pages when the scale
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// changes only because of limited numerical precision.
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return true; |
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} |
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return false; |
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} |
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/** |
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* @constructs PDFViewer |
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* @param {PDFViewerOptions} options |
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@ -2298,7 +2310,8 @@ var PDFViewer = (function pdfViewer() {
@@ -2298,7 +2310,8 @@ var PDFViewer = (function pdfViewer() {
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_setScaleUpdatePages: function pdfViewer_setScaleUpdatePages( |
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newScale, newValue, noScroll, preset) { |
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this._currentScaleValue = newValue; |
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if (newScale === this._currentScale) { |
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if (isSameScale(this._currentScale, newScale)) { |
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if (preset) { |
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this._setScaleDispatchEvent(newScale, newValue, true); |
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} |
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