/// <summary>
/// Copy constructor; instantiates a new ChartProperties object
/// whose values are copied from an existing ChartProperties object.
/// </summary>
/// <param name="copy">
/// The <c>ChartProperties</c> object whose values are to be copied.
/// </param>
public ChartProperties(ChartProperties copy)
{
fontSet.Add("titleFont", copy.fontSet["titleFont"]);
fontSet.Add("axisFont", copy.fontSet["axisFont"]);
fontSet.Add("labelFont", copy.fontSet["labelFont"]);
fontSet.Add("valueFont", copy.fontSet["valueFont"]);
fontSet.Add("legendFont", copy.fontSet["legendFont"]);
LineWeight = copy.LineWeight;
MarkerSize = copy.MarkerSize;
dock = copy.dock;
resolution.Add("width", copy.resolution["width"]);
resolution.Add("height", copy.resolution["height"]);
}
private void RightClickSaveImage(object sender, MouseEventArgs e)
{
if ((e.Button == System.Windows.Forms.MouseButtons.Right) &&
(sender != null))
{
if (SaveImageDialog.ShowDialog() == DialogResult.OK)
{
if (sender is PictureBox)
{
PictureBox pb = sender as PictureBox;
Bitmap output = new Bitmap(pb.Image);
output.Save(SaveImageDialog.FileName, System.Drawing.Imaging.ImageFormat.Png);
}
else if (sender is System.Windows.Forms.DataVisualization.Charting.Chart)
{
System.Windows.Forms.DataVisualization.Charting.Chart chart
= sender as System.Windows.Forms.DataVisualization.Charting.Chart;
ChartProperties chartprops = new ChartProperties();
chartprops.ExportChartAsPNG(chart, SaveImageDialog.FileName, 800, 800);
}
}
}
}
public void ExportChartAsPNG(
Chart input, string path,
int imageWidth, int imageHeight)
{
// The size of font elements.
// Assumes 150 dpi, 72 dpi font specification,
// and arbitrary font scaling ratio (s)
// [e.g. titles larger than lables].
//
// font_size = [72/150] * s * imageHeight
// s = (1/20) => 0.024
// s = (1/24) => 0.02
float titlePt = (float)Math.Floor(0.024 * (double)imageHeight);
float axisPt = (float)Math.Floor(0.02 * (double)imageHeight);
float valuePt = (float)Math.Floor(0.02 * (double)imageHeight);
float labelPt = (float)Math.Floor(0.02 * (double)imageHeight);
float legendPt = (float)Math.Floor(0.02 * (double)imageHeight);
if ((int)titlePt % 2 != 0)
{
titlePt += 1.0F;
}
if ((int)axisPt % 2 != 0)
{
axisPt += 1.0F;
}
if ((int)valuePt % 2 != 0)
{
valuePt += 1.0F;
}
if ((int)labelPt % 2 != 0)
{
labelPt += 1.0F;
}
if ((int)legendPt % 2 != 0)
{
legendPt += 1.0F;
}
// Line weights correspond to:
// lineWeight = 2 @ imageHeight = 480px
// lineWeight = 5 @ imageHeight = 1080px
int lineWeight
= (int)(((1.0 / 200.0) * (double)imageHeight) - 0.4);
if (lineWeight < 1)
{
lineWeight = 1;
}
int markerSize
= (int)Math.Round((((1.0 / 200.0) * (double)imageHeight) + 3.6));
if (markerSize < 5)
{
markerSize = 5;
}
// Create scaled fonts for the output image plot.
Font valueFont;
Font legendFont;
Font titleFont = new Font(input.Titles[0].Font.Name,
titlePt, FontStyle.Bold);
Font axisFont
= new Font(input.ChartAreas[0].Axes[0].TitleFont.Name,
axisPt, FontStyle.Regular);
Font labelFont
= new Font(input.ChartAreas[0].Axes[0].
LabelStyle.Font.Name, labelPt, FontStyle.Regular);
if (input.Series.Count > 0)
{
valueFont = new Font(input.Series[0].Font.Name,
valuePt, FontStyle.Regular);
}
else
{
valueFont = new Font(FontFamily.GenericSansSerif,
valuePt, FontStyle.Regular);
}
if (input.Legends.Count > 0)
{
legendFont = new Font(input.Legends[0].Font.Name,
legendPt, FontStyle.Regular);
}
else
{
legendFont = new Font(FontFamily.GenericSansSerif,
legendPt, FontStyle.Regular);
}
ChartProperties imageProps = new ChartProperties();
imageProps.Modify(titleFont,
axisFont,
labelFont,
valueFont,
legendFont,
lineWeight,
markerSize,
imageWidth,
imageHeight,
System.Windows.Forms.DockStyle.None);
Chart temp = imageProps.Clone(input);
imageProps.RestoreProperties(ref temp);
temp.SaveImage(path, ChartImageFormat.Png);
}
