Forex_Strategy_Builder.Chart.PnlPrice_MouseMove C# (CSharp) Method

        void PnlPrice_MouseMove(object sender, MouseEventArgs e)
        {
            mouseXOld = mouseX;
            mouseYOld = mouseY;
            mouseX = e.X;
            mouseY = e.Y;

            if (e.Button == MouseButtons.Left)
            {
                if (mouseX > XRight)
                {
                    if (mouseY > mouseYOld)
                        VerticalScaleDecrease();
                    else
                        VerticalScaleIncrease();

                    return;
                }
                else
                {
                    int newScrollValue = scroll.Value;

                    if (mouseX > mouseXOld)
                        newScrollValue -= (int)Math.Round(scroll.SmallChange * 0.1 * (100 - barPixels));
                    else if (mouseX < mouseXOld)
                        newScrollValue += (int)Math.Round(scroll.SmallChange * 0.1 * (100 - barPixels));

                    if (newScrollValue < scroll.Minimum)
                        newScrollValue = scroll.Minimum;
                    else if (newScrollValue > scroll.Maximum + 1 - scroll.LargeChange)
                        newScrollValue = scroll.Maximum + 1 - scroll.LargeChange;

                    scroll.Value = newScrollValue;

                }
            }

            if (isCrossShown)
            {
                GraphicsPath path = new GraphicsPath(FillMode.Winding);

                // Adding the old positions
                if (mouseXOld >= XLeft && mouseXOld <= XRight)
                {
                    if (mouseYOld >= YTop && mouseYOld <= YBottom)
                    {
                        // Horizontal Line
                        path.AddRectangle(new Rectangle(0, mouseYOld, pnlPrice.ClientSize.Width, 1));
                        // PriceBox
                        path.AddRectangle(new Rectangle(XRight - 1, mouseYOld - font.Height / 2 - 1, szPrice.Width + 2, font.Height + 2));
                    }
                    // Vertical Line
                    path.AddRectangle(new Rectangle(mouseXOld, 0, 1, pnlPrice.ClientSize.Height));
                    // DateBox
                    path.AddRectangle(new Rectangle(mouseXOld - szDateL.Width / 2 - 1, YBottomText - 1, szDateL.Width + 2, font.Height + 3));
                }

                // Adding the new positions
                if (mouseX >= XLeft && mouseX <= XRight)
                {
                    if (mouseYOld >= YTop && mouseYOld <= YBottom)
                    {
                        // Horizontal Line
                        path.AddRectangle(new Rectangle(0, mouseY, pnlPrice.ClientSize.Width, 1));
                        // PriceBox
                        path.AddRectangle(new Rectangle(XRight - 1, mouseY - font.Height / 2 - 1, szPrice.Width + 2, font.Height + 2));
                    }
                    // Vertical Line
                    path.AddRectangle(new Rectangle(mouseX, 0, 1, pnlPrice.ClientSize.Height));
                    // DateBox
                    path.AddRectangle(new Rectangle(mouseX - szDateL.Width / 2 - 1, YBottomText - 1, szDateL.Width + 2, font.Height + 3));
                }
                pnlPrice.Invalidate(new Region(path));

                for (int i = 0; i < indPanels && isIndicatorsShown; i++)
                {
                    GraphicsPath path1 = new GraphicsPath(FillMode.Winding);
                    if (mouseXOld > XLeft - 1 && mouseXOld < XRight + 1)
                        path1.AddRectangle(new Rectangle(mouseXOld, 0, 1, pnlInd[i].ClientSize.Height));
                    if (mouseX > XLeft - 1 && mouseX < XRight + 1)
                        path1.AddRectangle(new Rectangle(mouseX, 0, 1, pnlInd[i].ClientSize.Height));
                    pnlInd[i].Invalidate(new Region(path1));
                }

                if (isBalanceEquityShown)
                {
                    GraphicsPath path1 = new GraphicsPath(FillMode.Winding);
                    if (mouseXOld > XLeft - 1 && mouseXOld < XRight + 1)
                        path1.AddRectangle(new Rectangle(mouseXOld, 0, 1, pnlBalanceChart.ClientSize.Height));
                    if (mouseX > XLeft - 1 && mouseX < XRight + 1)
                        path1.AddRectangle(new Rectangle(mouseX, 0, 1, pnlBalanceChart.ClientSize.Height));
                    pnlBalanceChart.Invalidate(new Region(path1));
                }

                if (isFloatingPLShown)
                {
                    GraphicsPath path1 = new GraphicsPath(FillMode.Winding);
                    if (mouseXOld > XLeft - 1 && mouseXOld < XRight + 1)
                        path1.AddRectangle(new Rectangle(mouseXOld, 0, 1, pnlFloatingPLChart.ClientSize.Height));
                    if (mouseX > XLeft - 1 && mouseX < XRight + 1)
                        path1.AddRectangle(new Rectangle(mouseX, 0, 1, pnlFloatingPLChart.ClientSize.Height));
                    pnlFloatingPLChart.Invalidate(new Region(path1));
                }
            }

            // Determines the shown bar.
            if (mouseXOld >= XLeft && mouseXOld <= XRight)
            {
                if (mouseX >= XLeft && mouseX <= XRight)
                {   // Moving inside the chart
                    isMouseInPriceChart = true;
                    isDrawDinInfo = true;
                    GenerateDynamicInfo((e.X - XLeft) / barPixels);
                }
                else
                {   // Escaping from the bar area of chart
                    isMouseInPriceChart = false;
                    pnlPrice.Cursor = Cursors.Default;
                }
            }
            else if (mouseX >= XLeft && mouseX <= XRight)
            {   // Entering into the chart
                if (isCrossShown)
                    pnlPrice.Cursor = Cursors.Cross;
                isMouseInPriceChart = true;
                isDrawDinInfo = true;
                pnlInfo.Invalidate();
                GenerateDynamicInfo((e.X - XLeft) / barPixels);
            }

            return;
        }