sfx: LOK: don't shrink sidebar height below minimum

This avoids scrolling within the sidebar and makes
it possible to scroll the rendred sidebar image
in the client, which is more responsive and lighter.

Change-Id: I0713c699ba82bfc5fe503c9351402c67aef4494e
Reviewed-on: https://gerrit.libreoffice.org/73519
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

3 files changed, 42 insertions, 16 deletions

diff --git a/sfx2/source/sidebar/Deck.cxx b/sfx2/source/sidebar/Deck.cxx
index f26a643a083a..1e56a1516105 100644
--- a/sfx2/source/sidebar/Deck.cxx
+++ b/sfx2/source/sidebar/Deck.cxx
@@ -49,6 +49,7 @@ Deck::Deck(const DeckDescriptor& rDeckDescriptor, vcl::Window* pParentWindow,
     : Window(pParentWindow, 0)
     , msId(rDeckDescriptor.msId)
     , mnMinimalWidth(0)
+    , mnMinimalHeight(0)
     , maPanels()
     , mpTitleBar(VclPtr<DeckTitleBar>::Create(rDeckDescriptor.msTitle, this, rCloserAction))
     , mpScrollClipWindow(VclPtr<vcl::Window>::Create(this))
@@ -249,8 +250,9 @@ void Deck::ResetPanels(const SharedPanelContainer& rPanelContainer)
 void Deck::RequestLayout()
 {
     mnMinimalWidth = 0;
+    mnMinimalHeight = 0;
 
-    DeckLayouter::LayoutDeck(GetContentArea(), mnMinimalWidth, maPanels,
+    DeckLayouter::LayoutDeck(GetContentArea(), mnMinimalWidth, mnMinimalHeight, maPanels,
                              *GetTitleBar(), *mpScrollClipWindow, *mpScrollContainer,
                              *mpFiller, *mpVerticalScrollBar);
 
diff --git a/sfx2/source/sidebar/DeckLayouter.cxx b/sfx2/source/sidebar/DeckLayouter.cxx
index 591602ccf93a..a49f026df63a 100644
--- a/sfx2/source/sidebar/DeckLayouter.cxx
+++ b/sfx2/source/sidebar/DeckLayouter.cxx
@@ -57,13 +57,19 @@ namespace {
         sal_Int32 mnWeight;
         bool mbShowTitleBar;
 
-        LayoutItem()
-            : mpPanel(),maLayoutSize(0,0,0),mnDistributedHeight(0),mnWeight(0),mbShowTitleBar(true)
-        {}
+        LayoutItem(const VclPtr<Panel>& rPanel)
+            : mpPanel(rPanel)
+            , maLayoutSize(0, 0, 0)
+            , mnDistributedHeight(0)
+            , mnWeight(0)
+            , mbShowTitleBar(true)
+        {
+        }
     };
     tools::Rectangle LayoutPanels (
         const tools::Rectangle& rContentArea,
         sal_Int32& rMinimalWidth,
+        sal_Int32& rMinimalHeight,
         ::std::vector<LayoutItem>& rLayoutItems,
         vcl::Window& rScrollClipWindow,
         vcl::Window& rScrollContainer,
@@ -103,6 +109,7 @@ namespace {
 void DeckLayouter::LayoutDeck (
     const tools::Rectangle& rContentArea,
     sal_Int32& rMinimalWidth,
+    sal_Int32& rMinimalHeight,
     SharedPanelContainer& rPanels,
     vcl::Window& rDeckTitleBar,
     vcl::Window& rScrollClipWindow,
@@ -118,14 +125,14 @@ void DeckLayouter::LayoutDeck (
     {
         // Prepare the layout item container.
         ::std::vector<LayoutItem> aLayoutItems;
-        aLayoutItems.resize(rPanels.size());
-        for (sal_Int32 nIndex(0),nCount(rPanels.size()); nIndex<nCount; ++nIndex)
-        {
-            aLayoutItems[nIndex].mpPanel = rPanels[nIndex];
-        }
+        aLayoutItems.reserve(rPanels.size());
+        for (const auto& rPanel : rPanels)
+            aLayoutItems.emplace_back(rPanel);
+
         aBox = LayoutPanels(
             aBox,
             rMinimalWidth,
+            rMinimalHeight,
             aLayoutItems,
             rScrollClipWindow,
             rScrollContainer,
@@ -140,6 +147,7 @@ namespace {
 tools::Rectangle LayoutPanels (
     const tools::Rectangle& rContentArea,
     sal_Int32& rMinimalWidth,
+    sal_Int32& rMinimalHeight,
     ::std::vector<LayoutItem>& rLayoutItems,
     vcl::Window& rScrollClipWindow,
     vcl::Window& rScrollContainer,
@@ -169,6 +177,8 @@ tools::Rectangle LayoutPanels (
         nTotalPreferredHeight += rItem.maLayoutSize.Preferred;
     }
 
+    // rMinimalHeight = nTotalMinimumHeight;
+    rMinimalHeight = aBox.GetHeight();
 
     if (nTotalMinimumHeight > nAvailableHeight
         && ! bShowVerticalScrollBar)
@@ -179,6 +189,7 @@ tools::Rectangle LayoutPanels (
         return LayoutPanels(
             rContentArea,
             rMinimalWidth,
+            rMinimalHeight,
             rLayoutItems,
             rScrollClipWindow,
             rScrollContainer,
diff --git a/sfx2/source/sidebar/SidebarController.cxx b/sfx2/source/sidebar/SidebarController.cxx
index 7261b12eeb82..83ff4c5354c6 100644
--- a/sfx2/source/sidebar/SidebarController.cxx
+++ b/sfx2/source/sidebar/SidebarController.cxx
@@ -380,7 +380,13 @@ void SidebarController::NotifyResize()
         {
             // No TabBar in LOK.
             if (comphelper::LibreOfficeKit::isActive())
-                mpCurrentDeck->setPosSizePixel(nDeckX, 0, nWidth, nHeight);
+            {
+                const sal_Int32 nMinimalHeight = mpCurrentDeck->GetMinimalHeight();
+                if (nMinimalHeight > 0)
+                    mpCurrentDeck->setPosSizePixel(nDeckX, 0, nWidth, nMinimalHeight);
+                else
+                    mpCurrentDeck->setPosSizePixel(nDeckX, 0, nWidth, nHeight);
+            }
             else
                 mpCurrentDeck->setPosSizePixel(nDeckX, 0, nWidth - nTabBarDefaultWidth, nHeight);
             mpCurrentDeck->Show();
@@ -441,7 +447,7 @@ void SidebarController::UpdateConfigurations()
         return;
 
     if ((maCurrentContext.msApplication != "none") &&
-         !maCurrentContext.msApplication.isEmpty())
+            !maCurrentContext.msApplication.isEmpty())
     {
         mpResourceManager->SaveDecksSettings(maCurrentContext);
         mpResourceManager->SetLastActiveDeck(maCurrentContext, msCurrentDeckId);
@@ -449,11 +455,11 @@ void SidebarController::UpdateConfigurations()
 
     // get last active deck for this application on first update
     if (!maRequestedContext.msApplication.isEmpty() &&
-         (maCurrentContext.msApplication != maRequestedContext.msApplication))
+            (maCurrentContext.msApplication != maRequestedContext.msApplication))
     {
-       OUString sLastActiveDeck = mpResourceManager->GetLastActiveDeck( maRequestedContext );
-       if (!sLastActiveDeck.isEmpty())
-           msCurrentDeckId = sLastActiveDeck;
+        OUString sLastActiveDeck = mpResourceManager->GetLastActiveDeck( maRequestedContext );
+        if (!sLastActiveDeck.isEmpty())
+            msCurrentDeckId = sLastActiveDeck;
     }
 
     maCurrentContext = maRequestedContext;
@@ -1213,7 +1219,14 @@ void SidebarController::UpdateDeckOpenState()
             mnSavedSidebarWidth = aNewSize.Width(); // Save the current width to restore.
 
             aNewPos.setX(aNewPos.X() + mnSavedSidebarWidth - nTabBarDefaultWidth);
-            aNewSize.setWidth(nTabBarDefaultWidth);
+            if (comphelper::LibreOfficeKit::isActive())
+            {
+                // Hide by collapsing, otherwise with 0x0 the client might expect
+                // to get valid dimensions on rendering and not collapse the sidebar.
+                aNewSize.setWidth(1);
+            }
+            else
+                aNewSize.setWidth(nTabBarDefaultWidth);
 
             mpParentWindow->GetFloatingWindow()->SetPosSizePixel(aNewPos, aNewSize);
             // Sidebar too narrow to render the menu; disable it.