LayoutFarm.Text.EditableTextFlowLayer.PerformHorizontalFlowArrange C# (CSharp) Method

        void PerformHorizontalFlowArrange(
            int ownerClientLeft, int ownerClientWidth,
            int ownerClientTop)
        {
            if (lineCollection == null)
            {
                return;
            }
            if ((layerFlags & FLOWLAYER_HAS_MULTILINE) != 0)
            {
                PerformHorizontalFlowArrangeForMultilineText(ownerClientLeft,
                ownerClientWidth, ownerClientTop);
                return;
            }
            int ownerClientRight = ownerClientLeft + ownerClientWidth;
            int default_line_height = EditableTextLine.DEFAULT_LINE_HEIGHT;
            int curX = 0;
            int curY = 0;
            bool lastestIsBlock = false;
            int maxHeightInRow = 2;
            int maxWidth = 0;
            int curY_fromTop = ownerClientTop;
#if DEBUG
            long startTick = DateTime.Now.Ticks;
#endif


            FlowReLocator flowRelocator = FlowReLocator.GetNewFlowRelocator();
            flowRelocator.Load(this);
            EditableRun lastNotNullElement = null;
            int childCount = 0;
            while (flowRelocator.ReadNextRun())
            {
                EditableRun currentRun = flowRelocator.CurrentRun;
                if (currentRun != null)
                {
                    lastNotNullElement = currentRun;
                    childCount++;
#if DEBUG
                    vinv_dbug_BeginSetElementBound(currentRun);
#endif

                    int v_desired_width = currentRun.Width;
                    int v_desired_height = currentRun.Height;
                    if (lastestIsBlock || currentRun.IsBlockElement ||
                       (curX + v_desired_width > ownerClientRight))
                    {
                        if (!flowRelocator.IsFirstRunOfLine)
                        {
                            flowRelocator.CloseCurrentLine(curX, maxHeightInRow);
                            if (maxWidth < curX)
                            {
                                maxWidth = curX;
                            }
                            curY = curY_fromTop + maxHeightInRow;
                            curY_fromTop = curY;
                            maxHeightInRow = default_line_height;
                            flowRelocator.SetCurrentLineTop(curY);
                        }

                        curX = ownerClientLeft;
                        flowRelocator.Accept();
                        lastestIsBlock = currentRun.IsBlockElement;
                        if (v_desired_height > maxHeightInRow)
                        {
                            maxHeightInRow = v_desired_height;
                        }
                        EditableRun.DirectSetLocation(currentRun, curX, 0);
                        if (lastestIsBlock)
                        {
                            v_desired_width = flowRelocator.OwnerElementWidth;
                        }

                        EditableRun.DirectSetSize(currentRun,
                            v_desired_width, v_desired_height);
                        curX += v_desired_width;
                    }
                    else
                    {
                        flowRelocator.Accept();
                        lastestIsBlock = currentRun.IsBlockElement;
                        if (v_desired_height > maxHeightInRow)
                        {
                            maxHeightInRow = v_desired_height;
                        }
                        EditableRun.DirectSetLocation(currentRun, curX, 0);
                        EditableRun.DirectSetSize(
                            currentRun,
                            v_desired_width,
                            v_desired_height);
                        curX += v_desired_width;
                    }
#if DEBUG
                    vinv_dbug_EndSetElementBound(currentRun);
#endif
                }
                else
                {
                    switch (flowRelocator.FeederState)
                    {
                        case 1:
                            {
                                if (maxWidth < curX)
                                {
                                    maxWidth = curX;
                                }
                                flowRelocator.CloseCurrentLineWithLineBreak(curX, maxHeightInRow);
                                curX = ownerClientLeft;
                                curY = curY_fromTop + maxHeightInRow;
                                curY_fromTop = curY;
                                maxHeightInRow = default_line_height;
                                flowRelocator.SetCurrentLineTop(curY);
                            }
                            break;
                        case 4:
                            {
                                if (maxWidth < curX)
                                {
                                    maxWidth = curX;
                                }
                                flowRelocator.SetCurrentLineSize(curX, maxHeightInRow);
                                curX = ownerClientLeft;
                            }
                            break;
                    }
                }
            }


            if (curX > maxWidth)
            {
                maxWidth = curX;
            }


            int finalHeight = curY_fromTop + maxHeightInRow;
            ValidateArrangement();
            FlowReLocator.FreeFlowRelocator(flowRelocator);
        }