sd lok: Set the view size to full page size and hide ruler, scrollbars

... such that during insertion of objects when sd calculates the center
of the view to place the object, it is the center of the whole slide,
not the center of the default rectangle of 800x600.

It's also important to hide rulers, scrollbars so that correct center is
calculated; we don't need them anyways in LOK.

Change-Id: I1180541c1b8c8a35f39112ca0a670c9d96d1320b
Reviewed-on: https://gerrit.libreoffice.org/51357Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jan Holesovsky <kendy@collabora.com>

sd/source/ui/inc/ViewShell.hxx

@@ -192,6 +192,8 @@ public:
 
     bool HasRuler() { return mbHasRulers;}
     void SetRuler(bool bRuler);
+    // Hides horizontal, vertical scrollbar as well as scrollbox
+    void SetScrollBarsVisible(bool bVisible);
 
     /** Set internal values of all scroll bars that determine thumb size and
         position.  The external values like size and position of the scroll

sd/source/ui/unoidl/unomodel.cxx

@@ -2476,11 +2476,21 @@ void SdXImpressDocument::initializeForTiledRendering(const css::uno::Sequence<cs
         SdOptions* pOptions = SD_MOD()->GetSdOptions(mpDoc->GetDocumentType());
         pOptions->SetShowComments(comphelper::LibreOfficeKit::isTiledAnnotations());
 
-        // Disable map mode, so that it's possible to send mouse event coordinates
-        // in logic units.
+        pViewShell->SetRuler(false);
+        pViewShell->SetScrollBarsVisible(false);
+
         if (sd::Window* pWindow = pViewShell->GetActiveWindow())
         {
+            // get the full page size in pixels
+            pWindow->EnableMapMode();
+            Size aSize(pWindow->LogicToPixel(pDrawView->GetSdrPageView()->GetPage()->GetSize()));
+            // Disable map mode, so that it's possible to send mouse event
+            // coordinates in logic units
             pWindow->EnableMapMode(false);
+
+            // arrange UI elements again with new view size
+            pViewShell->GetParentWindow()->SetSizePixel(aSize);
+            pViewShell->Resize();
         }
 
         // Forces all images to be swapped in synchronously, this

sd/source/ui/view/viewshe2.cxx

@@ -929,6 +929,18 @@ void ViewShell::SetRuler(bool bRuler)
         GetViewShell()->InvalidateBorder();
 }
 
+void ViewShell::SetScrollBarsVisible(bool bVisible)
+{
+    if (mpVerticalScrollBar.get() != nullptr)
+        mpVerticalScrollBar->Show( bVisible );
+
+    if (mpHorizontalScrollBar.get() != nullptr)
+        mpHorizontalScrollBar->Show( bVisible );
+
+    if (mpScrollBarBox.get() != nullptr)
+        mpScrollBarBox->Show(bVisible);
+}
+
 sal_Int8 ViewShell::AcceptDrop (
     const AcceptDropEvent& rEvt,
     DropTargetHelper& rTargetHelper,