work on pdf presenter support

bower.json

@@ -31,6 +31,10 @@
     "ckeditor": "~4.5.4",
     "angular-ckeditor": "~1.0.0",
     "roboto-condensed": "~0.3.0",
-    "open-sans-fontface": "https://github.com/OpenSlides/open-sans.git#1.4.2.post1"
+    "open-sans-fontface": "https://github.com/OpenSlides/open-sans.git#1.4.2.post1",
+    "angular-pdf": "~1.3.0"
+  },
+  "resolutions": {
+    "angular": ">= 1.4.9"
   }
 }

openslides/mediafiles/serializers.py

@@ -2,6 +2,7 @@ import mimetypes
 
 from django.conf import settings
 from django.db import models as dbmodels
+from PyPDF2 import PdfFileReader
 
 from ..utils.rest_api import FileField, ModelSerializer, SerializerMethodField
 from .models import Mediafile
@@ -17,10 +18,14 @@ class AngularCompatibleFileField(FileField):
     def to_representation(self, value):
         if value is None:
             return None
-        return {
+        filetype = mimetypes.guess_type(value.path)[0]
+        result = {
             'name': value.name,
-            'type': mimetypes.guess_type(value.path)[0]
+            'type': filetype
         }
+        if filetype == 'application/pdf':
+            result['pages'] = PdfFileReader(open(value.path, 'rb')).getNumPages()
+        return result
 
 
 class MediafileSerializer(ModelSerializer):

openslides/mediafiles/static/js/mediafiles/projector.js

@@ -4,4 +4,62 @@
 
 angular.module('OpenSlidesApp.mediafiles.projector', ['OpenSlidesApp.mediafiles']);
 
-}());
+.config([
+    'slidesProvider',
+    function(slidesProvider) {
+	slidesProvider.registerSlide('mediafiles/mediafile', {
+            template: 'static/templates/mediafiles/slide_mediafile.html'
+	});
+    }
+])
+
+.controller('SlideMediafileCtrl', [
+    '$scope',
+    'Mediafile',
+    function($scope, Mediafile) {
+
+        var id = $scope.element.mediafile;
+        $scope.page = $scope.element.page;
+    
+        function updateScale() {
+            if($scope.element.pageFit) {
+                $scope.scale = 'page-fit';
+            } else {
+                $scope.scale = $scope.element.scale;
+            }
+        }
+    
+        $scope.$watch(function() {
+            return $scope.element.scale;
+        }, updateScale);
+    
+        updateScale();
+    
+        var mediafile = Mediafile.find(id);
+        mediafile.then(function(mediafile) {
+            $scope.pdfName = mediafile.title;
+            $scope.pdfUrl = mediafile.mediafileUrl;
+        })
+    
+        $scope.scroll = 0;
+    
+        $scope.getNavStyle = function(scroll) {
+            if(scroll > 100) return 'pdf-controls fixed';
+            else return 'pdf-controls';
+        };
+    
+        $scope.onError = function(error) {
+            console.log(error);
+        };
+    
+        $scope.onLoad = function() {
+            $scope.loading = '';
+        };
+    
+        $scope.onProgress = function(progress) {
+            console.log(progress);
+        };
+    }
+]);
+
+})();

openslides/mediafiles/static/js/mediafiles/site.js

@@ -59,6 +59,20 @@ angular.module('OpenSlidesApp.mediafiles.site', ['ngFileUpload', 'OpenSlidesApp.
         $scope.sortColumn = 'title';
         $scope.filterPresent = '';
         $scope.reverse = false;
+
+        function updatePresentedMediafiles() {
+            var projectorElements = _.map(Projector.get(1).elements, function(element) { return element });
+            $scope.presentedMediafiles = _.filter(projectorElements, function (element) {
+                return element.name === 'mediafiles/mediafile';
+            });
+        }
+
+        $scope.$watch(function() {
+           return Projector.get(1).elements;
+        }, updatePresentedMediafiles);
+
+        updatePresentedMediafiles();
+
         // function to sort by clicked column
         $scope.toggleSort = function ( column ) {
             if ( $scope.sortColumn === column ) {
@@ -111,6 +125,110 @@ angular.module('OpenSlidesApp.mediafiles.site', ['ngFileUpload', 'OpenSlidesApp.
         $scope.delete = function (mediafile) {
             Mediafile.destroy(mediafile.id);
         };
+
+        // show document on projector
+        $scope.showPdf = function (mediafile) {
+            var postUrl,
+                data;
+            if($scope.presentedMediafiles.length > 0) {
+                // update first mediafile, at the moment there should not be more
+                var uuid = $scope.presentedMediafiles[0].uuid;
+                postUrl = '/rest/core/projector/1/update_elements/';
+                data = {};
+                data[uuid] = {
+                    mediafile: mediafile.id,
+                    numPages: mediafile.mediafile.pages,
+                    page: 1,
+                    pageFit: true,
+                    scale: 1,
+                    visible: true
+                };
+            } else {
+                postUrl = '/rest/core/projector/1/activate_elements/';
+                data = [{
+                    name: 'mediafiles/mediafile',
+                    visible: true,
+                    numPages: mediafile.mediafile.pages,
+                    pageFit: true,
+                    scale: 1,
+                    mediafile: mediafile.id,
+                    page: 1
+                }];
+            }
+            $http.post(postUrl, data);
+        };
+
+        function sendMediafileCommand(data) {
+            var mediafileElement = getCurrentlyPresentedMediafile();
+            var updateData = _.extend({}, mediafileElement);
+            _.extend(updateData, data);
+            var postData = {};
+            postData[mediafileElement.uuid] = updateData;
+            $http.post('/rest/core/projector/1/update_elements/', postData);
+        }
+
+        function getCurrentlyPresentedMediafile() {
+            return $scope.presentedMediafiles[0];
+        }
+
+        $scope.mediafileGoPrevious = function () {
+            var mediafileElement = getCurrentlyPresentedMediafile();
+            if (mediafileElement.page <= 1) {
+                return;
+            }
+            sendMediafileCommand({
+                page: parseInt(mediafileElement.page) - 1
+            });
+        };
+        $scope.mediafileGoNext = function () {
+            var mediafileElement = getCurrentlyPresentedMediafile();
+            if (mediafileElement.page >= mediafileElement.numPages) {
+                return;
+            }
+            sendMediafileCommand({
+                page: parseInt(mediafileElement.page) + 1
+            });
+        };
+        $scope.mediafileZoomIn = function () {
+            var mediafileElement = getCurrentlyPresentedMediafile();
+            sendMediafileCommand({
+                pageFit: false,
+                scale: parseFloat(mediafileElement.scale) + 0.2
+            });
+        };
+        $scope.mediafileFit = function () {
+            sendMediafileCommand({
+                pageFit: true
+            });
+        };
+        $scope.mediafileZoomOut = function () {
+            var mediafileElement = getCurrentlyPresentedMediafile();
+            sendMediafileCommand({
+                pageFit: false,
+                scale: parseFloat(mediafileElement.scale) - 0.2
+            });
+        };
+        $scope.mediafileChangePage = function(pageNum) {
+            sendMediafileCommand({
+                pageToDisplay: pageNum
+            });
+        };
+        $scope.mediafileRotate = function () {
+            var rotation;
+            var currentRotation = $scope.mediafile.rotation;
+            if (currentRotation === 0) {
+                rotation = 90;
+            } else if (currentRotation === 90) {
+                rotation = 180;
+            } else if (currentRotation === 180) {
+                rotation = 270;
+            } else {
+                rotation = 0;
+            }
+            sendMediafileCommand({
+                rotation: rotation
+            });
+        };
     }
 ])
 

openslides/mediafiles/static/templates/mediafiles/mediafile-list.html

@@ -10,6 +10,27 @@
   </div>
 </div>
 
+<!-- mediafile pdf controls -->
+<div os-perms-lite="core.can_manage_projector" ng-if="presentedMediafiles.length">
+
+  <div ng-repeat="presentedMediafile in presentedMediafiles">
+    <h3 translate>PDF controls</h3>
+    <nav ng-class="getNavStyle(scroll)">
+      <button ng-click="mediafileGoPrevious()"><</span></button>
+      <button ng-click="mediafileGoNext()">></span></button>
+
+      <button ng-click="mediafileZoomIn()">+</span></button>
+      <button ng-click="mediafileFit()">100%</span></button>
+      <button ng-click="mediafileZoomOut()">-</span></button>
+
+      <span>Page: </span>
+      <input type="text" min=1 ng-model="presentedMediafile.page">
+      <span> / {{presentedMediafile.numPages}}</span>
+
+    </nav>
+  </div>
+</div>
+
 <div class="details">
   <div class="row form-group">
     <div class="col-sm-6">

openslides/mediafiles/static/templates/mediafiles/slide_mediafile.html

@@ -0,0 +1,8 @@
+<div ng-controller="SlideMediafileCtrl" class="content">
+    <ng-pdf template-url="/static/templates/mediafiles/slide_mediafile_partial.html"
+        scale="page-fit"
+        ng-attr-scale="{{ scale }}"
+        ng-attr-page="{{ page }}"
+        debug="true">
+    </ng-pdf>
+</div>

openslides/mediafiles/static/templates/mediafiles/slide_mediafile_partial.html

@@ -0,0 +1 @@
+<canvas id="pdf-canvas" class="rotate0"></canvas>

requirements_production.txt

@@ -9,4 +9,5 @@ reportlab>=3.0,<3.3
 roman>=2.0,<2.1
 setuptools>=2.2,<20.0
 sockjs-tornado>=1.0,<1.1
-Whoosh>=2.7,<2.8
+Whoosh>=2.7.0,<2.8
+PyPDF2==1.25.1