Merge pull request #10246 from Snuffleupagus/api-classes

Convert the remaining code in `src/display/api.js` to use ES6 classes

examples/acroforms/acroforms.js

@@ -24,7 +24,8 @@ var DEFAULT_SCALE = 1.0;
 var container = document.getElementById('pageContainer');
 
 // Fetch the PDF document from the URL using promises.
-pdfjsLib.getDocument(DEFAULT_URL).then(function (doc) {
+var loadingTask = pdfjsLib.getDocument(DEFAULT_URL);
+loadingTask.promise.then(function(doc) {
   // Use a promise to fetch and render the next page.
   var promise = Promise.resolve();
 

examples/components/pageviewer.js

@@ -37,11 +37,12 @@ var SCALE = 1.0;
 var container = document.getElementById('pageContainer');
 
 // Loading document.
-pdfjsLib.getDocument({
+var loadingTask = pdfjsLib.getDocument({
   url: DEFAULT_URL,
   cMapUrl: CMAP_URL,
   cMapPacked: CMAP_PACKED,
-}).then(function(pdfDocument) {
+});
+loadingTask.promise.then(function(pdfDocument) {
   // Document loaded, retrieving the page.
   return pdfDocument.getPage(PAGE_TO_VIEW).then(function (pdfPage) {
     // Creating the page view with default parameters.

examples/components/simpleviewer.js

@@ -60,11 +60,12 @@ document.addEventListener('pagesinit', function () {
 });
 
 // Loading document.
-pdfjsLib.getDocument({
+var loadingTask = pdfjsLib.getDocument({
   url: DEFAULT_URL,
   cMapUrl: CMAP_URL,
   cMapPacked: CMAP_PACKED,
-}).then(function(pdfDocument) {
+});
+loadingTask.promise.then(function(pdfDocument) {
   // Document loaded, specifying document for the viewer and
   // the (optional) linkService.
   pdfViewer.setDocument(pdfDocument);

examples/components/singlepageviewer.js

@@ -60,11 +60,12 @@ document.addEventListener('pagesinit', function () {
 });
 
 // Loading document.
-pdfjsLib.getDocument({
+var loadingTask = pdfjsLib.getDocument({
   url: DEFAULT_URL,
   cMapUrl: CMAP_URL,
   cMapPacked: CMAP_PACKED,
-}).then(function(pdfDocument) {
+});
+loadingTask.promise.then(function(pdfDocument) {
   // Document loaded, specifying document for the viewer and
   // the (optional) linkService.
   pdfSinglePageViewer.setDocument(pdfDocument);

examples/learning/helloworld.html

@@ -28,11 +28,12 @@
   //
   // Asynchronous download PDF
   //
-  pdfjsLib.getDocument(url).then(function getPdfHelloWorld(pdf) {
+  var loadingTask = pdfjsLib.getDocument(url);
+  loadingTask.promise.then(function(pdf) {
     //
     // Fetch the first page
     //
-    pdf.getPage(1).then(function getPageHelloWorld(page) {
+    pdf.getPage(1).then(function(page) {
       var scale = 1.5;
       var viewport = page.getViewport(scale);
 

examples/learning/helloworld64.html

@@ -39,9 +39,10 @@
 
   // Opening PDF by passing its binary data as a string. It is still preferable
   // to use Uint8Array, but string or array-like structure will work too.
-  pdfjsLib.getDocument({data: pdfData}).then(function getPdfHelloWorld(pdf) {
+  var loadingTask = pdfjsLib.getDocument({data: pdfData});
+  loadingTask.promise.then(function(pdf) {
     // Fetch the first page.
-    pdf.getPage(1).then(function getPageHelloWorld(page) {
+    pdf.getPage(1).then(function(page) {
       var scale = 1.5;
       var viewport = page.getViewport(scale);
 

examples/learning/prevnext.html

@@ -117,7 +117,8 @@
   /**
    * Asynchronously downloads PDF.
    */
-  pdfjsLib.getDocument(url).then(function (pdfDoc_) {
+  var loadingTask = pdfjsLib.getDocument(url);
+  loadingTask.promise.then(function(pdfDoc_) {
     pdfDoc = pdfDoc_;
     document.getElementById('page_count').textContent = pdfDoc.numPages;
 

examples/node/getinfo.js

@@ -17,7 +17,8 @@ var pdfPath = process.argv[2] || '../../web/compressed.tracemonkey-pldi-09.pdf';
 
 // Will be using promises to load document, pages and misc data instead of
 // callback.
-pdfjsLib.getDocument(pdfPath).then(function (doc) {
+var loadingTask = pdfjsLib.getDocument(pdfPath);
+loadingTask.promise.then(function(doc) {
   var numPages = doc.numPages;
   console.log('# Document Loaded');
   console.log('Number of Pages: ' + numPages);

examples/node/pdf2png/pdf2png.js

@@ -57,7 +57,8 @@ var pdfURL = '../../../web/compressed.tracemonkey-pldi-09.pdf';
 var rawData = new Uint8Array(fs.readFileSync(pdfURL));
 
 // Load the PDF file.
-pdfjsLib.getDocument(rawData).then(function (pdfDocument) {
+var loadingTask = pdfjsLib.getDocument(rawData);
+loadingTask.promise.then(function(pdfDocument) {
   console.log('# PDF document loaded.');
 
   // Get the first page.
@@ -72,7 +73,8 @@ pdfjsLib.getDocument(rawData).then(function (pdfDocument) {
       canvasFactory: canvasFactory
     };
 
-    page.render(renderContext).then(function () {
+    var renderTask = page.render(renderContext);
+    renderTask.promise.then(function() {
       // Convert the canvas to an image buffer.
       var image = canvasAndContext.canvas.toBuffer();
       fs.writeFile('output.png', image, function (error) {

examples/node/pdf2svg.js

@@ -84,11 +84,12 @@ function writeSvgToFile(svgElement, filePath) {
 
 // Will be using promises to load document, pages and misc data instead of
 // callback.
-pdfjsLib.getDocument({
+var loadingTask = pdfjsLib.getDocument({
   data: data,
   // Try to export JPEG images directly if they don't need any further processing.
   nativeImageDecoderSupport: pdfjsLib.NativeImageDecoding.DISPLAY
-}).then(function (doc) {
+});
+loadingTask.promise.then(function(doc) {
   var numPages = doc.numPages;
   console.log('# Document Loaded');
   console.log('Number of Pages: ' + numPages);

examples/svgviewer/viewer.js

@@ -51,11 +51,12 @@ document.addEventListener('pagesinit', function () {
 });
 
 // Loading document.
-pdfjsLib.getDocument({
+var loadingTask = pdfjsLib.getDocument({
   url: DEFAULT_URL,
   cMapUrl: CMAP_URL,
   cMapPacked: CMAP_PACKED,
-}).then(function(pdfDocument) {
+});
+loadingTask.promise.then(function(pdfDocument) {
   // Document loaded, specifying document for the viewer and
   // the (optional) linkService.
   pdfViewer.setDocument(pdfDocument);

examples/text-only/pdf2svg.js

@@ -49,7 +49,8 @@ function buildSVG(viewport, textContent) {
 
 function pageLoaded() {
   // Loading document and page text content
-  pdfjsLib.getDocument({url: PDF_PATH}).then(function (pdfDocument) {
+  var loadingTask = pdfjsLib.getDocument({url: PDF_PATH});
+  loadingTask.promise.then(function(pdfDocument) {
     pdfDocument.getPage(PAGE_NUMBER).then(function (page) {
       var viewport = page.getViewport(PAGE_SCALE);
       page.getTextContent().then(function (textContent) {

src/display/canvas.js

@@ -726,7 +726,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
 
   CanvasGraphics.prototype = {
 
-    beginDrawing({ transform, viewport, transparency,
+    beginDrawing({ transform, viewport, transparency = false,
                    background = null, }) {
       // For pdfs that use blend modes we have to clear the canvas else certain
       // blend modes can look wrong since we'd be blending with a white

test/driver.js

@@ -358,7 +358,7 @@ var Driver = (function DriverClosure() { // eslint-disable-line no-unused-vars
 
         let absoluteUrl = new URL(task.file, window.location).href;
         try {
-          pdfjsLib.getDocument({
+          const loadingTask = pdfjsLib.getDocument({
             url: absoluteUrl,
             password: task.password,
             nativeImageDecoderSupport: task.nativeImageDecoderSupport,
@@ -367,7 +367,8 @@ var Driver = (function DriverClosure() { // eslint-disable-line no-unused-vars
             disableRange: task.disableRange,
             disableAutoFetch: !task.enableAutoFetch,
             pdfBug: true,
-          }).then((doc) => {
+          });
+          loadingTask.promise.then((doc) => {
             task.pdfDoc = doc;
             this._nextPage(task, failure);
           }, (err) => {

test/unit/api_spec.js

@@ -1332,26 +1332,23 @@ describe('api', function() {
 
     // Render the first page of the given PDF file.
     // Fulfills the promise with the base64-encoded version of the PDF.
-    function renderPDF(filename) {
-      var loadingTask = getDocument(filename);
+    async function renderPDF(filename) {
+      const loadingTask = getDocument(filename);
       loadingTasks.push(loadingTask);
-      return loadingTask.promise
-        .then(function(pdf) {
+      const pdf = await loadingTask.promise;
       pdfDocuments.push(pdf);
-          return pdf.getPage(1);
-        }).then(function(page) {
-          var viewport = page.getViewport(1.2);
-          var canvasAndCtx = CanvasFactory.create(viewport.width,
+      const page = await pdf.getPage(1);
+      const viewport = page.getViewport(1.2);
+      const canvasAndCtx = CanvasFactory.create(viewport.width,
                                                 viewport.height);
-          return page.render({
+      const renderTask = page.render({
         canvasContext: canvasAndCtx.context,
         viewport,
-          }).then(function() {
-            var data = canvasAndCtx.canvas.toDataURL();
+      });
+      await renderTask.promise;
+      const data = canvasAndCtx.canvas.toDataURL();
       CanvasFactory.destroy(canvasAndCtx);
       return data;
-          });
-        });
     }
 
     afterEach(function(done) {

test/unit/custom_spec.js

@@ -48,9 +48,7 @@ describe('custom canvas rendering', function() {
     }).then(function(data) {
       page = data;
       done();
-    }).catch(function (reason) {
-      done.fail(reason);
-    });
+    }).catch(done.fail);
   });
 
   afterAll(function(done) {
@@ -66,20 +64,16 @@ describe('custom canvas rendering', function() {
     var viewport = page.getViewport(1);
     var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
 
-    page.render({
+    const renderTask = page.render({
       canvasContext: canvasAndCtx.context,
       viewport,
-    }).then(function() {
-      var { r, g, b, a, } = getTopLeftPixel(canvasAndCtx.context);
-      CanvasFactory.destroy(canvasAndCtx);
-      expect(r).toEqual(255);
-      expect(g).toEqual(255);
-      expect(b).toEqual(255);
-      expect(a).toEqual(255);
-      done();
-    }).catch(function (reason) {
-      done(reason);
     });
+    renderTask.promise.then(function() {
+      expect(getTopLeftPixel(canvasAndCtx.context)).toEqual(
+        { r: 255, g: 255, b: 255, a: 255, });
+      CanvasFactory.destroy(canvasAndCtx);
+      done();
+    }).catch(done.fail);
   });
 
   it('renders to canvas with a custom background', function(done) {
@@ -89,20 +83,16 @@ describe('custom canvas rendering', function() {
     var viewport = page.getViewport(1);
     var canvasAndCtx = CanvasFactory.create(viewport.width, viewport.height);
 
-    page.render({
+    const renderTask = page.render({
       canvasContext: canvasAndCtx.context,
       viewport,
       background: 'rgba(255,0,0,1.0)',
-    }).then(function() {
-      var { r, g, b, a, } = getTopLeftPixel(canvasAndCtx.context);
-      CanvasFactory.destroy(canvasAndCtx);
-      expect(r).toEqual(255);
-      expect(g).toEqual(0);
-      expect(b).toEqual(0);
-      expect(a).toEqual(255);
-      done();
-    }).catch(function (reason) {
-      done(reason);
     });
+    renderTask.promise.then(function() {
+      expect(getTopLeftPixel(canvasAndCtx.context)).toEqual(
+        { r: 255, g: 0, b: 0, a: 255, });
+      CanvasFactory.destroy(canvasAndCtx);
+      done();
+    }).catch(done.fail);
   });
 });