Resolves: tdf#91533 (rhbz#1364335) Tooltips are truncated

Change-Id: Id9ec91ed9652f491e4e2a0556eeed27bf6517002
diff --git a/vcl/inc/helpwin.hxx b/vcl/inc/helpwin.hxx
index e7cc81a8..38645753 100644
--- a/vcl/inc/helpwin.hxx
+++ b/vcl/inc/helpwin.hxx
@@ -47,6 +47,7 @@ private:
    virtual void Paint(vcl::RenderContext& rRenderContext, const Rectangle&) override;
    virtual void RequestHelp( const HelpEvent& rHEvt ) override;
    virtual void ApplySettings(vcl::RenderContext& rRenderContext) override;
    virtual void StateChanged(StateChangedType nType) override;

    virtual OUString GetText() const override;
    void ImplShow();
diff --git a/vcl/source/app/help.cxx b/vcl/source/app/help.cxx
index 28bc632..7a8bbc8 100644
--- a/vcl/source/app/help.cxx
+++ b/vcl/source/app/help.cxx
@@ -277,6 +277,17 @@ HelpTextWindow::HelpTextWindow( vcl::Window* pParent, const OUString& rText, sal
    maHideTimer.SetTimeout( rHelpSettings.GetTipTimeout() );
}

void HelpTextWindow::StateChanged(StateChangedType nType)
{
    FloatingWindow::StateChanged(nType);
    if (nType == StateChangedType::InitShow)
    {
        ApplySettings(*this);
        SetHelpText(maHelpText);
        Invalidate();
    }
}

void HelpTextWindow::ApplySettings(vcl::RenderContext& rRenderContext)
{
    const StyleSettings& rStyleSettings = rRenderContext.GetSettings().GetStyleSettings();