Add possibility to disable long click

Author: yuriyskulskiy

android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/DragPinchManager.java

@@ -63,6 +63,10 @@ void disable() {
         enabled = false;
     }
 
+    void disableLongpress(){
+        gestureDetector.setIsLongpressEnabled(false);
+    }
+
     @Override
     public boolean onSingleTapConfirmed(MotionEvent e) {
         boolean onTapHandled = pdfView.callbacks.callOnTap(e);

android-pdf-viewer/src/main/java/com/github/barteksc/pdfviewer/PDFView.java

@@ -1470,6 +1470,11 @@ public Configurator nightMode(boolean nightMode) {
             return this;
         }
 
+        public Configurator disableLongpress() {
+            PDFView.this.dragPinchManager.disableLongpress();
+            return this;
+        }
+
         public void load() {
             if (!hasSize) {
                 waitingDocumentConfigurator = this;