From 32f066ebc70684fe410b89fcb87cf550bd3537e3 Mon Sep 17 00:00:00 2001
From: yipstanley <stanley_yip@brown.edu>
Date: Tue, 27 Aug 2019 14:16:26 -0400
Subject: pdf + new npm version fixes

---
 src/client/views/pdf/PDFViewer.tsx | 6 ++++++
 src/client/views/pdf/Page.tsx      | 7 ++++---
 2 files changed, 10 insertions(+), 3 deletions(-)

(limited to 'src/client/views/pdf')

diff --git a/src/client/views/pdf/PDFViewer.tsx b/src/client/views/pdf/PDFViewer.tsx
index 258e218f0..e3bfea237 100644
--- a/src/client/views/pdf/PDFViewer.tsx
+++ b/src/client/views/pdf/PDFViewer.tsx
@@ -152,12 +152,18 @@ export class PDFViewer extends React.Component<IViewerProps> {
         if (this._pageSizes.length === 0) {
             this._isPage = Array<string>(this.props.pdf.numPages);
             this._pageSizes = Array<{ width: number, height: number }>(this.props.pdf.numPages);
+            this._visibleElements = Array<JSX.Element>(this.props.pdf.numPages);
             await Promise.all(this._pageSizes.map<Pdfjs.PDFPromise<any>>((val, i) =>
                 this.props.pdf.getPage(i + 1).then(action((page: Pdfjs.PDFPageProxy) => {
                     this._pageSizes.splice(i, 1, {
                         width: (page.view[page.rotate === 0 || page.rotate === 180 ? 2 : 3] - page.view[page.rotate === 0 || page.rotate === 180 ? 0 : 1]) * scale,
                         height: (page.view[page.rotate === 0 || page.rotate === 180 ? 3 : 2] - page.view[page.rotate === 0 || page.rotate === 180 ? 1 : 0]) * scale
                     });
+                    this._visibleElements.splice(i, 1,
+                        <div key={`${this.props.url}-placeholder-${i + 1}`} className="pdfviewer-placeholder"
+                            style={{ width: this._pageSizes[i].width, height: this._pageSizes[i].height }}>
+                            "PAGE IS LOADING... "
+                </div>)
                     this.getPlaceholderPage(i);
                 }))));
             this.props.loaded(Math.max(...this._pageSizes.map(i => i.width)), this._pageSizes[0].height, this.props.pdf.numPages);
diff --git a/src/client/views/pdf/Page.tsx b/src/client/views/pdf/Page.tsx
index 0de1777e6..8df2dce29 100644
--- a/src/client/views/pdf/Page.tsx
+++ b/src/client/views/pdf/Page.tsx
@@ -64,13 +64,14 @@ export default class Page extends React.Component<IPageProps> {
         // lower scale = easier to read at small sizes, higher scale = easier to read at large sizes
         if (this._state !== "rendering" && !this._page && this._canvas.current && this._textLayer.current) {
             this._state = "rendering";
-            let viewport = page.getViewport(scale);
+            let viewport = page.getViewport({ scale: scale });
             this._canvas.current.width = this._width = viewport.width;
             this._canvas.current.height = this._height = viewport.height;
             this.props.pageLoaded(viewport);
             let ctx = this._canvas.current.getContext("2d");
             if (ctx) {
-                page.render({ canvasContext: ctx, viewport: viewport }); // renders the page onto the canvas context
+                //@ts-ignore
+                page.render({ canvasContext: ctx, viewport: viewport, enableWebGL: true }); // renders the page onto the canvas context
                 page.getTextContent().then(res =>                   // renders text onto the text container
                     //@ts-ignore
                     Pdfjs.renderTextLayer({
@@ -258,7 +259,7 @@ export default class Page extends React.Component<IPageProps> {
                 }
             }
         }
-        let text = selRange.extractContents().textContent;
+        let text = selRange.cloneContents().textContent;
         text && this.props.setSelectionText(text);
 
         // clear selection
-- 
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