diff options
-rw-r--r-- | include/vcl/layout.hxx | 1 | ||||
-rw-r--r-- | vcl/source/window/layout.cxx | 22 |
2 files changed, 22 insertions, 1 deletions
diff --git a/include/vcl/layout.hxx b/include/vcl/layout.hxx index cb031a0efe3b..02485487fc84 100644 --- a/include/vcl/layout.hxx +++ b/include/vcl/layout.hxx @@ -491,6 +491,7 @@ public: //set to true to disable the built-in scrolling callbacks to allow the user //to override it void setUserManagedScrolling(bool bUserManagedScrolling) { m_bUserManagedScrolling = bUserManagedScrolling;} + void doSetAllocation(const Size &rAllocation, bool bRetryOnFailure); private: virtual Size calculateRequisition() const override; virtual void setAllocation(const Size &rAllocation) override; diff --git a/vcl/source/window/layout.cxx b/vcl/source/window/layout.cxx index 33f70be753c9..932310e19258 100644 --- a/vcl/source/window/layout.cxx +++ b/vcl/source/window/layout.cxx @@ -1898,7 +1898,7 @@ void VclScrolledWindow::InitScrollBars(const Size &rRequest) m_pHScroll->Scroll(); } -void VclScrolledWindow::setAllocation(const Size &rAllocation) +void VclScrolledWindow::doSetAllocation(const Size &rAllocation, bool bRetryOnFailure) { Size aChildReq; @@ -1971,13 +1971,33 @@ void VclScrolledWindow::setAllocation(const Size &rAllocation) if (pChild && pChild->IsVisible()) { assert(dynamic_cast<VclViewport*>(pChild) && "scrolledwindow child should be a Viewport"); + + WinBits nOldBits = (GetStyle() & (WB_AUTOVSCROLL | WB_VSCROLL | WB_AUTOHSCROLL | WB_HSCROLL)); + setLayoutAllocation(*pChild, Point(1, 1), aInnerSize); + + // tdf#128758 if the layout allocation triggered some callback that + // immediately invalidates the layout by adding scrollbars then + // normally this would simply retrigger layout and another toplevel + // attempt is made later. But the initial layout attempt blocks + // relayouts, so just make another single effort here. + WinBits nNewBits = (GetStyle() & (WB_AUTOVSCROLL | WB_VSCROLL | WB_AUTOHSCROLL | WB_HSCROLL)); + if (nOldBits != nNewBits && bRetryOnFailure) + { + doSetAllocation(rAllocation, false); + return; + } } if (!m_bUserManagedScrolling) InitScrollBars(aChildReq); } +void VclScrolledWindow::setAllocation(const Size &rAllocation) +{ + doSetAllocation(rAllocation, true); +} + Size VclScrolledWindow::getVisibleChildSize() const { Size aRet(GetSizePixel()); |