improve(pdf): add basic files

src/main/frontend/extensions/pdf/impls.cljs

@@ -0,0 +1,158 @@
+(ns frontend.extensions.pdf.impls
+  (:require [rum.core :as rum]
+            [promesa.core :as p]
+            [frontend.extensions.pdf.utils :as pdf-utils]))
+
+(defonce ACTIVE_FILE "https://phx-nine.vercel.app/clojure-hopl-iv-final.pdf")
+
+(rum/defc viewer
+  [^js pdf-document]
+
+  (let [*el-ref (rum/create-ref)
+        [state, set-state!] (rum/use-state {:viewer nil :bus nil :link nil})
+        [sel-state, set-sel-state!] (rum/use-state {:range nil :collapsed nil :point nil})]
+
+    (rum/use-effect!
+     (fn [] (let [^js event-bus (js/pdfjsViewer.EventBus.)
+                  ^js link-service (js/pdfjsViewer.PDFLinkService. #js {:eventBus event-bus :externalLinkTarget 2})
+                  ^js el (rum/deref *el-ref)
+                  ^js viewer (js/pdfjsViewer.PDFViewer.
+                              #js {:container            el
+                                   :eventBus             event-bus
+                                   :linkService          link-service
+                                   :enhanceTextSelection true
+                                   :removePageBorders    true})]
+              (. link-service setDocument pdf-document)
+              (. link-service setViewer viewer)
+
+               ;; TODO: debug
+              (set! (. js/window -lsPdfViewer) viewer)
+
+              (p/then (. viewer setDocument pdf-document)
+                      #(set-state! {:viewer viewer :bus event-bus :link link-service})))
+
+        ;;TODO: destroy
+       #())
+     [])
+
+    ;; selection context menu
+    (rum/use-effect!
+     (fn []
+       (when-let [^js sel-range (and (not (:collapsed sel-state)) (:range sel-state))]
+         (when-let [page-info (pdf-utils/get-page-from-range sel-range)]
+           (when-let [sel-rects (pdf-utils/get-range-rects<-page-cnt sel-range (:page-el page-info))]
+             (let [^js point (:point sel-state)]
+
+                ;; TODO: debug
+               (js/console.debug "[Range] ====> [" page-info "]" (.toString sel-range) point)
+               (js/console.debug "[Rects] ====>" sel-rects))))))
+
+     [(:range sel-state)])
+
+    ;; interaction events
+    (rum/use-effect!
+     (fn []
+       (when-let [^js viewer (:viewer state)]
+         (let [^js el (rum/deref *el-ref)
+
+               fn-ready
+               (fn []
+                 (set! (. viewer -currentScaleValue) "auto"))
+
+               fn-selection-ok
+               (fn [^js/MouseEvent e]
+                 (let [^js/Selection selection (js/document.getSelection)
+                       ^js/Range sel-range (.getRangeAt selection 0)]
+
+                   (cond
+                     (.-isCollapsed selection)
+                     (set-sel-state! {:collapsed true})
+
+                     (and sel-range (.contains el (.-commonAncestorContainer sel-range)))
+                     (set-sel-state! {:collapsed false :range sel-range :point {:x (.-clientX e) :y (.-clientY e)}}))))
+
+               fn-selection
+               (fn []
+                 (let [*dirty (volatile! false)
+                       fn-dirty #(vreset! *dirty true)]
+
+                   (js/document.addEventListener "selectionchange" fn-dirty)
+                   (js/document.addEventListener "mouseup"
+                                                 (fn [^js e]
+                                                   (and @*dirty (fn-selection-ok e))
+                                                   (js/document.removeEventListener "selectionchange" fn-dirty))
+                                                 #js {:once true})))]
+
+           (doto (.-eventBus viewer)
+             (.on "pagesinit" fn-ready))
+
+           (doto el
+             (.addEventListener "mousedown" fn-selection))
+
+           #(do
+              (doto (.-eventBus viewer)
+                (.off "pagesinit" fn-ready))
+
+              (doto el
+                (.removeEventListener "mousedown" fn-selection))))))
+
+     [(:viewer state)])
+
+    [:div.extensions__pdf-viewer {:ref *el-ref}
+     [:div.pdfViewer "viewer pdf"]]))
+
+(rum/defc pdf-loader
+  [url]
+  (let [*doc-ref (rum/use-ref nil)
+        [state set-state!] (rum/use-state {:error nil :pdf-document nil :status nil})]
+
+    ;; load
+    (rum/use-effect!
+     (fn []
+       (let [get-doc$ (fn [^js opts] (.-promise (js/pdfjsLib.getDocument opts)))
+             own-doc (rum/deref *doc-ref)
+             opts {:url           url
+                   :ownerDocument js/document
+                    ;;:cMapUrl       "./js/pdfjs/cmaps/"
+                   :cMapUrl       "https://cdn.jsdelivr.net/npm/pdfjs-dist@2.8.335/cmaps/"
+                   :cMapPacked    true}]
+
+         (p/finally
+           (p/catch (p/then
+                     (do
+                       (set-state! {:status :loading})
+                       (get-doc$ (clj->js opts)))
+                     #(do (js/console.log "+++" %)
+                          (set-state! {:pdf-document %})))
+                    #(set-state! {:error %}))
+           #(set-state! {:status :completed}))
+
+         #()))
+     [url])
+
+    [:div.extensions__pdf-loader {:ref *doc-ref}
+     (if (= (:status state) :loading)
+       [:h1 "Downloading PDF #" url]
+       (viewer (:pdf-document state)))
+     [:h3 (str (:error state))]]))
+
+(rum/defc container
+  []
+  (let [[prepared set-prepared!] (rum/use-state false)]
+
+    ;; load assets
+    (rum/use-effect!
+     (fn []
+       (p/then
+        (pdf-utils/load-base-assets$)
+        (fn [] (set-prepared! true))))
+     [])
+
+    [:div.extensions__pdf-container.flex
+     (if prepared
+       (pdf-loader ACTIVE_FILE))]))
+
+(rum/defc playground
+  []
+  [:div.extensions__pdf-playground
+   (container)])

src/main/frontend/extensions/pdf/pdf.css

@@ -0,0 +1,81 @@
+.extensions__pdf {
+  &-loader {
+    position: relative;
+    min-height: 90vh;
+  }
+
+  &-viewer {
+    position: absolute;
+    overflow: auto;
+    width: 100%;
+    height: 100%;
+
+    > .viewer-container {
+    }
+  }
+}
+
+body[data-page=home] {
+  #main-content-container {
+    margin: 0 !important;
+    padding: 0 !important;
+  }
+
+  .cp__sidebar-main-content {
+    > .pb-24 {
+      max-width: unset;
+    }
+  }
+
+  .extensions__pdf-loader {
+    width: 900px;
+  }
+
+  .extensions__pdf-container {
+  }
+}
+
+/* overrides for pdf_viewer.css from PDF.JS web viewer */
+
+.textLayer {
+  z-index: 2;
+  opacity: 1;
+  mix-blend-mode: multiply;
+}
+
+.annotationLayer {
+  position: absolute;
+  top: 0;
+
+  z-index: 3;
+}
+
+.textLayer > div:not(.PdfHighlighter__highlight-layer):not(.Highlight):not(.Highlight-emoji) {
+  opacity: 1;
+  mix-blend-mode: multiply;
+}
+
+.textLayer ::selection {
+  background: rgba(252, 232, 151, 1);
+  mix-blend-mode: multiply;
+}
+
+@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
+  .textLayer {
+    opacity: 0.5;
+  }
+}
+
+/* Internet Explorer support method */
+@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
+  .textLayer {
+    opacity: 0.5
+  }
+}
+
+/* Microsoft Edge Browser 12+ (All) - @supports method */
+@supports (-ms-ime-align:auto) {
+  .textLayer {
+    opacity: 0.5
+  }
+}

src/main/frontend/extensions/pdf/utils.cljs

@@ -0,0 +1,37 @@
+(ns frontend.extensions.pdf.utils
+  (:require [promesa.core :as p]
+            [frontend.loader :refer [load]]))
+
+(defn js-load$
+  [url]
+  (p/create
+   (fn [resolve]
+     (load url resolve))))
+
+(defn load-base-assets$
+  []
+  (p/let [_ (js-load$ "./static/js/pdfjs/pdf.js")
+          _ (js-load$ "./static/js/pdfjs/pdf_viewer.js")]))
+
+(defn get-page-from-el
+  [^js/HTMLElement el]
+  (when-let [^js page-el (and el (.closest el ".page"))]
+    {:page-number  (.. page-el -dataset -pageNumber)
+     :page-el page-el}))
+
+(defn get-page-from-range
+  [^js/Range r]
+  (when-let [parent-el (and r (.. r -startContainer -parentElement))]
+    (get-page-from-el parent-el)))
+
+(defn get-range-rects<-page-cnt
+  [^js/Range r ^js page-cnt]
+  (let [rge-rects (js->clj (.getClientRects r))
+        ^js cnt-offset (.getBoundingClientRect page-cnt)]
+
+    (if (seq rge-rects)
+      (for [rect rge-rects]
+        {:top    (- (+ (.-top rect) (.-scrollTop page-cnt)) (.-top cnt-offset))
+         :left   (- (+ (.-left rect) (.-scrollLeft page-cnt)) (.-left cnt-offset))
+         :width  (.-width rect)
+         :height (.-height rect)}))))

src/main/frontend/extensions/pdf/viewer.css

@@ -0,0 +1,580 @@
+/* Copyright 2014 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+.textLayer {
+  position: absolute;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  overflow: hidden;
+  opacity: 0.2;
+  line-height: 1;
+}
+
+.textLayer > span {
+  color: transparent;
+  position: absolute;
+  white-space: pre;
+  cursor: text;
+  transform-origin: 0% 0%;
+}
+
+.textLayer .highlight {
+  margin: -1px;
+  padding: 1px;
+  background-color: rgba(180, 0, 170, 1);
+  border-radius: 4px;
+}
+
+.textLayer .highlight.begin {
+  border-radius: 4px 0 0 4px;
+}
+
+.textLayer .highlight.end {
+  border-radius: 0 4px 4px 0;
+}
+
+.textLayer .highlight.middle {
+  border-radius: 0;
+}
+
+.textLayer .highlight.selected {
+  background-color: rgba(0, 100, 0, 1);
+}
+
+.textLayer ::-moz-selection {
+  background: rgba(0, 0, 255, 1);
+}
+
+.textLayer ::selection {
+  background: rgba(0, 0, 255, 1);
+}
+
+.textLayer .endOfContent {
+  display: block;
+  position: absolute;
+  left: 0;
+  top: 100%;
+  right: 0;
+  bottom: 0;
+  z-index: -1;
+  cursor: default;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  user-select: none;
+}
+
+.textLayer .endOfContent.active {
+  top: 0;
+}
+
+
+.annotationLayer section {
+  position: absolute;
+  text-align: initial;
+}
+
+.annotationLayer .linkAnnotation > a,
+.annotationLayer .buttonWidgetAnnotation.pushButton > a {
+  position: absolute;
+  font-size: 1em;
+  top: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+}
+
+.annotationLayer .linkAnnotation > a:hover,
+.annotationLayer .buttonWidgetAnnotation.pushButton > a:hover {
+  opacity: 0.2;
+  background: rgba(255, 255, 0, 1);
+  box-shadow: 0 2px 10px rgba(255, 255, 0, 1);
+}
+
+.annotationLayer .textAnnotation img {
+  position: absolute;
+  cursor: pointer;
+}
+
+.annotationLayer .textWidgetAnnotation input,
+.annotationLayer .textWidgetAnnotation textarea,
+.annotationLayer .choiceWidgetAnnotation select,
+.annotationLayer .buttonWidgetAnnotation.checkBox input,
+.annotationLayer .buttonWidgetAnnotation.radioButton input {
+  background-color: rgba(0, 54, 255, 0.13);
+  border: 1px solid transparent;
+  box-sizing: border-box;
+  font-size: 9px;
+  height: 100%;
+  margin: 0;
+  padding: 0 3px;
+  vertical-align: top;
+  width: 100%;
+}
+
+.annotationLayer .choiceWidgetAnnotation select option {
+  padding: 0;
+}
+
+.annotationLayer .buttonWidgetAnnotation.radioButton input {
+  border-radius: 50%;
+}
+
+.annotationLayer .textWidgetAnnotation textarea {
+  font: message-box;
+  font-size: 9px;
+  resize: none;
+}
+
+.annotationLayer .textWidgetAnnotation input[disabled],
+.annotationLayer .textWidgetAnnotation textarea[disabled],
+.annotationLayer .choiceWidgetAnnotation select[disabled],
+.annotationLayer .buttonWidgetAnnotation.checkBox input[disabled],
+.annotationLayer .buttonWidgetAnnotation.radioButton input[disabled] {
+  background: none;
+  border: 1px solid transparent;
+  cursor: not-allowed;
+}
+
+.annotationLayer .textWidgetAnnotation input:hover,
+.annotationLayer .textWidgetAnnotation textarea:hover,
+.annotationLayer .choiceWidgetAnnotation select:hover,
+.annotationLayer .buttonWidgetAnnotation.checkBox input:hover,
+.annotationLayer .buttonWidgetAnnotation.radioButton input:hover {
+  border: 1px solid rgba(0, 0, 0, 1);
+}
+
+.annotationLayer .textWidgetAnnotation input:focus,
+.annotationLayer .textWidgetAnnotation textarea:focus,
+.annotationLayer .choiceWidgetAnnotation select:focus {
+  background: none;
+  border: 1px solid transparent;
+}
+
+.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,
+.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after,
+.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before {
+  background-color: rgba(0, 0, 0, 1);
+  content: "";
+  display: block;
+  position: absolute;
+}
+
+.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before,
+.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after {
+  height: 80%;
+  left: 45%;
+  width: 1px;
+}
+
+.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:before {
+  transform: rotate(45deg);
+}
+
+.annotationLayer .buttonWidgetAnnotation.checkBox input:checked:after {
+  transform: rotate(-45deg);
+}
+
+.annotationLayer .buttonWidgetAnnotation.radioButton input:checked:before {
+  border-radius: 50%;
+  height: 50%;
+  left: 30%;
+  top: 20%;
+  width: 50%;
+}
+
+.annotationLayer .textWidgetAnnotation input.comb {
+  font-family: monospace;
+  padding-left: 2px;
+  padding-right: 0;
+}
+
+.annotationLayer .textWidgetAnnotation input.comb:focus {
+  /*
+   * Letter spacing is placed on the right side of each character. Hence, the
+   * letter spacing of the last character may be placed outside the visible
+   * area, causing horizontal scrolling. We avoid this by extending the width
+   * when the element has focus and revert this when it loses focus.
+   */
+  width: 115%;
+}
+
+.annotationLayer .buttonWidgetAnnotation.checkBox input,
+.annotationLayer .buttonWidgetAnnotation.radioButton input {
+  -webkit-appearance: none;
+  -moz-appearance: none;
+  appearance: none;
+  padding: 0;
+}
+
+.annotationLayer .popupWrapper {
+  position: absolute;
+  width: 20em;
+}
+
+.annotationLayer .popup {
+  position: absolute;
+  z-index: 200;
+  max-width: 20em;
+  background-color: rgba(255, 255, 153, 1);
+  box-shadow: 0 2px 5px rgba(136, 136, 136, 1);
+  border-radius: 2px;
+  padding: 6px;
+  margin-left: 5px;
+  cursor: pointer;
+  font: message-box;
+  font-size: 9px;
+  white-space: normal;
+  word-wrap: break-word;
+}
+
+.annotationLayer .popup > * {
+  font-size: 9px;
+}
+
+.annotationLayer .popup h1 {
+  display: inline-block;
+}
+
+.annotationLayer .popup span {
+  display: inline-block;
+  margin-left: 5px;
+}
+
+.annotationLayer .popup p {
+  border-top: 1px solid rgba(51, 51, 51, 1);
+  margin-top: 2px;
+  padding-top: 2px;
+}
+
+.annotationLayer .highlightAnnotation,
+.annotationLayer .underlineAnnotation,
+.annotationLayer .squigglyAnnotation,
+.annotationLayer .strikeoutAnnotation,
+.annotationLayer .freeTextAnnotation,
+.annotationLayer .lineAnnotation svg line,
+.annotationLayer .squareAnnotation svg rect,
+.annotationLayer .circleAnnotation svg ellipse,
+.annotationLayer .polylineAnnotation svg polyline,
+.annotationLayer .polygonAnnotation svg polygon,
+.annotationLayer .caretAnnotation,
+.annotationLayer .inkAnnotation svg polyline,
+.annotationLayer .stampAnnotation,
+.annotationLayer .fileAttachmentAnnotation {
+  cursor: pointer;
+}
+
+* /* Copyright 2021 Mozilla Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+.xfaLayer {
+  position: absolute;
+  top: 0;
+  left: 0;
+  z-index: 200;
+  transform-origin: 0 0;
+}
+
+.xfaLayer * {
+  color: inherit;
+  font: inherit;
+  -webkit-font-kerning: inherit;
+  font-kerning: inherit;
+  letter-spacing: inherit;
+  text-align: inherit;
+  text-decoration: inherit;
+  vertical-align: inherit;
+  box-sizing: border-box;
+}
+
+.xfaFont {
+  color: black;
+  font-weight: normal;
+  -webkit-font-kerning: none;
+  font-kerning: none;
+  font-size: 10px;
+  font-style: normal;
+  letter-spacing: 0;
+  text-decoration: none;
+  vertical-align: 0;
+}
+
+.xfaDraw {
+  z-index: 200;
+}
+
+.xfaExclgroup {
+  z-index: 300;
+}
+
+.xfaField {
+  z-index: 300;
+}
+
+.xfaSubform {
+  z-index: 100;
+}
+
+.xfaLabel {
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+  width: 100%;
+  height: 100%;
+}
+
+.xfaCaption {
+  flex: 1 1 auto;
+}
+
+.xfaTextfield,
+.xfaSelect {
+  width: 100%;
+  height: 100%;
+  flex: 1 1 auto;
+  border: none;
+}
+
+.xfaLabel > input[type="checkbox"] {
+  /* Use this trick to make the checkbox invisible but
+       but still focusable. */
+  position: absolute;
+  left: -99999px;
+}
+
+.xfaLabel > input[type="checkbox"]:focus + .xfaCheckboxMark {
+  box-shadow: 0 0 5px rgba(0, 0, 0, 0.7);
+}
+
+.xfaCheckboxMark {
+  cursor: pointer;
+  flex: 0 0 auto;
+  border-style: solid;
+  border-width: 2px;
+  border-color: #8f8f9d;
+  font-size: 10px;
+  line-height: 10px;
+  width: 10px;
+  height: 10px;
+  text-align: center;
+  vertical-align: middle;
+  display: flex;
+  flex-direction: row;
+  align-items: center;
+}
+
+.xfaCheckbox:checked + .xfaCheckboxMark::after {
+  content: attr(mark);
+}
+
+.xfaButton {
+  cursor: pointer;
+  width: 100%;
+  height: 100%;
+  border: none;
+  text-align: center;
+}
+
+.xfaButton:hover {
+  background: Highlight;
+}
+
+.xfaLrTb,
+.xfaRlTb,
+.xfaTb,
+.xfaPosition {
+  display: block;
+}
+
+.xfaPosition {
+  position: relative;
+}
+
+.xfaValignMiddle {
+  display: flex;
+  align-items: center;
+}
+
+.xfaLrTb > div {
+  display: inline;
+  float: left;
+}
+
+.xfaRlTb > div {
+  display: inline;
+  float: right;
+}
+
+.xfaTable {
+  display: flex;
+  flex-direction: column;
+}
+
+.xfaTable .xfaRow {
+  display: flex;
+  flex-direction: row;
+  flex: 1 1 auto;
+}
+
+.xfaTable .xfaRow > div {
+  flex: 1 1 auto;
+}
+
+.xfaTable .xfaRlRow {
+  display: flex;
+  flex-direction: row-reverse;
+  flex: 1;
+}
+
+.xfaTable .xfaRlRow > div {
+  flex: 1;
+}
+
+.pdfViewer .canvasWrapper {
+  overflow: hidden;
+}
+
+.pdfViewer .page {
+  direction: ltr;
+  width: 816px;
+  height: 1056px;
+  margin: 1px auto -8px;
+  position: relative;
+  overflow: visible;
+  border: 9px solid transparent;
+  background-clip: content-box;
+  -o-border-image: url(images/shadow.png) 9 9 repeat;
+  border-image: url(images/shadow.png) 9 9 repeat;
+  background-color: rgba(255, 255, 255, 1);
+}
+
+.pdfViewer.removePageBorders .page {
+  margin: 0 auto 10px;
+  border: none;
+}
+
+.pdfViewer.singlePageView {
+  display: inline-block;
+}
+
+.pdfViewer.singlePageView .page {
+  margin: 0;
+  border: none;
+}
+
+.pdfViewer.scrollHorizontal,
+.pdfViewer.scrollWrapped,
+.spread {
+  margin-left: 3.5px;
+  margin-right: 3.5px;
+  text-align: center;
+}
+
+.pdfViewer.scrollHorizontal,
+.spread {
+  white-space: nowrap;
+}
+
+.pdfViewer.removePageBorders,
+.pdfViewer.scrollHorizontal .spread,
+.pdfViewer.scrollWrapped .spread {
+  margin-left: 0;
+  margin-right: 0;
+}
+
+.spread .page,
+.pdfViewer.scrollHorizontal .page,
+.pdfViewer.scrollWrapped .page,
+.pdfViewer.scrollHorizontal .spread,
+.pdfViewer.scrollWrapped .spread {
+  display: inline-block;
+  vertical-align: middle;
+}
+
+.spread .page,
+.pdfViewer.scrollHorizontal .page,
+.pdfViewer.scrollWrapped .page {
+  margin-left: -3.5px;
+  margin-right: -3.5px;
+}
+
+.pdfViewer.removePageBorders .spread .page,
+.pdfViewer.removePageBorders.scrollHorizontal .page,
+.pdfViewer.removePageBorders.scrollWrapped .page {
+  margin-left: 5px;
+  margin-right: 5px;
+}
+
+.pdfViewer .page canvas {
+  margin: 0;
+  display: block;
+}
+
+.pdfViewer .page canvas[hidden] {
+  display: none;
+}
+
+.pdfViewer .page .loadingIcon {
+  position: absolute;
+  display: block;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  background: url("images/loading-icon.gif") center no-repeat;
+}
+
+.pdfPresentationMode .pdfViewer {
+  margin-left: 0;
+  margin-right: 0;
+}
+
+.pdfPresentationMode .pdfViewer .page,
+.pdfPresentationMode .pdfViewer .spread {
+  display: block;
+}
+
+.pdfPresentationMode .pdfViewer .page,
+.pdfPresentationMode .pdfViewer.removePageBorders .page {
+  margin-left: auto;
+  margin-right: auto;
+}
+
+.pdfPresentationMode:-webkit-full-screen .pdfViewer .page {
+  margin-bottom: 100%;
+  border: 0;
+}
+
+.pdfPresentationMode:-moz-full-screen .pdfViewer .page {
+  margin-bottom: 100%;
+  border: 0;
+}
+
+.pdfPresentationMode:fullscreen .pdfViewer .page {
+  margin-bottom: 100%;
+  border: 0;
+}