Catrobat.IDE.WindowsPhone.Controls.FormulaControls.FormulaViewer.MultilinePanelContent_OnSizeChanged C# (CSharp) Method

        private void MultilinePanelContent_OnSizeChanged(object sender, SizeChangedEventArgs e)
        {
            const double decreaseMultiplyer = 0.95;
            const double increaseMultiplyer = 1.05;

            var decreaseOffset = ActualFontSize * 1.0;
            var increaseOffset = ActualFontSize*2.2;

            if (_lastContainerAdded)
            {
                if (MultilinePanelContent.ActualHeight > ScrollViewerContent.ActualHeight - decreaseOffset)
                {
                    if (ActualFontSize > MinFontSize)
                    {
                        ActualFontSize *= decreaseMultiplyer;
                        UpdateFontSize();
                    }
                    else
                    {
                        ScrollViewerContent.ScrollToVerticalOffset(100000);
                    }
                }
            }
            else
            {
                if (MultilinePanelContent.ActualHeight < ScrollViewerContent.ActualHeight - increaseOffset)
                {
                    if (ActualFontSize < MaxFontSize)
                    {
                        ActualFontSize *= increaseMultiplyer;
                        UpdateFontSize();
                    }

                }
            }
        }