using System;
using System.Collections;
using System.Windows;
using System.Windows.Input;
using ChartDirector;

namespace CSharpWPFCharts
{
    public partial class TrackBoxWindow : Window
    {
        public TrackBoxWindow()
        {
            InitializeComponent();
        }

        private int diameter;
        private double[] zData;

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            // The diameter of the wafer
            diameter = 20;
            double radius = diameter / 2.0;

            // The random data array are for a square grid of 20 x 20 cells
            RanSeries r = new RanSeries(2);
            zData = r.get2DSeries(diameter, diameter, 0, 100);

            // We remove cells that are outside the wafer circle by setting them to NoValue
            for (int i = 0; i < zData.Length; ++i)
            {
                double x = i % diameter + 0.5;
                double y = (i - x) / diameter + 0.5;
                if ((x - radius) * (x - radius) + (y - radius) * (y - radius) > radius * radius)
                {
                    zData[i] = Chart.NoValue;
                }
            }

            // Create an XYChart object of size 520 x 480 pixels.
            XYChart c = new XYChart(520, 480);

            // Add a title the chart with 15pt Arial Bold font
            c.addTitle("Wafer Map Demonstration", "Arial Bold", 15);

            // Set the plotarea at (50, 40) and of size 400 x 400 pixels. Set the backgound and
            // border to transparent. Set both horizontal and vertical grid lines to light grey.
            // (0xdddddd)
            PlotArea p = c.setPlotArea(50, 40, 400, 400, -1, -1, Chart.Transparent, 0xdddddd,
                0xdddddd);

            // Create a discrete heat map with 20 x 20 cells
            DiscreteHeatMapLayer layer = c.addDiscreteHeatMapLayer(zData, diameter);

            // Set the x-axis scale. Use 8pt Arial Bold font. Set axis color to transparent, so only
            // the labels visible. Set 0.5 offset to position the labels in between the grid lines.
            c.xAxis().setLinearScale(0, diameter, 1);
            c.xAxis().setLabelStyle("Arial Bold", 8);
            c.xAxis().setColors(Chart.Transparent, Chart.TextColor);
            c.xAxis().setLabelOffset(0.5);

            // Set the y-axis scale. Use 8pt Arial Bold font. Set axis color to transparent, so only
            // the labels visible. Set 0.5 offset to position the labels in between the grid lines.
            c.yAxis().setLinearScale(0, diameter, 1);
            c.yAxis().setLabelStyle("Arial Bold", 8);
            c.yAxis().setColors(Chart.Transparent, Chart.TextColor);
            c.yAxis().setLabelOffset(0.5);

            // Position the color axis 20 pixels to the right of the plot area and of the same
            // height as the plot area. Put the labels on the right side of the color axis. Use 8pt
            // Arial Bold font for the labels.
            ColorAxis cAxis = layer.setColorAxis(p.getRightX() + 20, p.getTopY(), Chart.TopLeft,
                p.getHeight(), Chart.Right);
            cAxis.setLabelStyle("Arial Bold", 8);

            // Output the chart
            WPFChartViewer1.Chart = c;

            //include tool tip for the chart
            WPFChartViewer1.ImageMap = c.getHTMLImageMap("clickable", "",
                    "title='<*cdml*>({xLabel}, {yLabel}) = {z|2}'");
        }

        //
        // Draw track cursor when mouse is moving over plotarea
        //
        private void WPFChartViewer1_MouseMovePlotArea(object sender, MouseEventArgs e)
        {
            WPFChartViewer viewer = (WPFChartViewer)sender;
            trackCell((XYChart)viewer.Chart, viewer.PlotAreaMouseX, viewer.PlotAreaMouseY);
            viewer.updateDisplay();

            // Hide the track cursor when the mouse leaves the plot area
            viewer.removeDynamicLayer("MouseLeavePlotArea");            
        }

        //
        // Draw the track box with legend
        //
        private void trackCell(XYChart c, int mouseX, int mouseY)
        {
            // Clear the current dynamic layer and get the DrawArea object to draw on it.
            DrawArea d = c.initDynamicLayer();

            // The plot area object
            PlotArea plotArea = c.getPlotArea();

            // Get the cell at the mouse
            int xIndex = (int)Math.Floor(c.getXValue(mouseX));
            int yIndex = (int)Math.Floor(c.getYValue(mouseY));
            if ((xIndex < 0) || (yIndex < 0) || (xIndex >= diameter) || (yIndex >= diameter) ||
                (zData[yIndex * diameter + xIndex] == Chart.NoValue))
                return;   // mouse not hover any cell

            // Draw the track boxes - recatngle with a thick border
            int boxLeft = c.getXCoor(xIndex);
            int boxRight = c.getXCoor(xIndex + 1);
            int boxTop = c.getYCoor(yIndex);
            int boxBottom= c.getYCoor(yIndex + 1);
            d.rect(boxLeft, boxTop, boxRight, boxBottom, 0x000000, Chart.Transparent, Chart.flatBorder(3));
        }
    }
}