static ColorRampConverter()
{
// populate
colorRampList = new ColorRampList();
ColorRampValueList valueList = new ColorRampValueList();
valueList.Add(0, Color.Red);
valueList.Add(50, Color.Blue);
valueList.Add(100, Color.Green);
valueList.Text = "RedBlueGreen";
colorRampList.Add(valueList.Text, valueList);
valueList = new ColorRampValueList();
valueList.Add(0, Color.Red);
valueList.Add(100, Color.Orange);
valueList.Text = "RedOrange";
colorRampList.Add(valueList.Text, valueList);
// add extended elements
valueList = new ColorRampValueList();
valueList.Add(0, Color.Red);
valueList.Add(20, Color.Orange);
valueList.Add(40, Color.Brown);
valueList.Add(60, Color.Cyan);
valueList.Add(80, Color.Magenta);
valueList.Add(100, Color.Empty);
valueList.Text = "Random values";
valueList.Style = ColorRampStyle.Discrete;
colorRampList.Add(valueList.Text, valueList);
valueList = new ColorRampValueList();
valueList.Text = "Empty";
colorRampList.Add(valueList.Text, valueList);
valueList = new ColorRampValueList();
valueList.Text = "New color ramp ...";
colorRampList.Add(valueList.Text, valueList);
}
/// <summary>
/// Paints a representation of the value of an object using the specified PaintValueEventArgs.
/// </summary>
/// <param name="e">A PaintValueEventArgs that indicates what to paint and where to paint it.</param>
public override void PaintValue(PaintValueEventArgs e)
{
if (e.Value != null)
{
ColorRampValueList valueList = (ColorRampValueList)e.Value;
if (valueList.Count > 0)
{
for (int i = 1; i < valueList.Count; i++)
{
Rectangle rect = new Rectangle(
e.Bounds.X + (int)(valueList.Keys[i - 1] * e.Bounds.Width / 100), e.Bounds.Y,
(int)((valueList.Keys[i] - valueList.Keys[i - 1]) * e.Bounds.Width / 100),
e.Bounds.Height);
if (valueList.Style == ColorRampStyle.Discrete)
{
using (Brush brush = new SolidBrush(valueList.Values[i - 1]))
{
e.Graphics.FillRectangle(brush, rect);
}
}
else
{
using (Brush brush =
new LinearGradientBrush(rect, valueList.Values[i - 1], valueList.Values[i],
0.0))
{
e.Graphics.FillRectangle(brush, rect);
}
}
}
}
}
}
public void AddValue(ColorRampValueList value)
{
if (!colorRampList.ContainsKey(value.Text))
{
colorRampList.Add(value.Text, value);
}
}
/// <summary>
/// Constructs a new NewColorRampForm class.
/// </summary>
public ColorRampForm(ColorRampEditor editor, string key)
{
this.editor = editor;
InitializeComponent();
if (key != null && ColorRampConverter.ColorRampList.ContainsKey(key))
{
values = ColorRampConverter.ColorRampList[key];
this.Text = "Edit Colour Ramp";
textBoxName.Text = key;
textBoxName.Enabled = false;
if (values.ContainsKey(0))
{
colorPickerStart.Value = values[0];
}
if (values.ContainsKey(100))
{
colorPickerEnd.Value = values[100];
}
}
else
{
values = new ColorRampValueList();
values.Add(0, colorPickerStart.Value);
values.Add(100, colorPickerEnd.Value);
}
comboBoxStyle.DataSource = Enum.GetValues(typeof(ColorRampStyle));
comboBoxStyle.SelectedItem = ColorRampStyle.Gradient;
UpdateState();
UpdatePreview();
}
public void EditValue(string key)
{
ColorRampForm dialog = new ColorRampForm((ColorRampEditor)this.Editor, key);
if (dialog.ShowDialog(this) == DialogResult.OK)
{
Value = dialog.Value;
}
}
public void NewValue()
{
ColorRampForm dialog = new ColorRampForm((ColorRampEditor)this.Editor, null);
if (dialog.ShowDialog(this) == DialogResult.OK)
{
ColorRampConverter converter = (ColorRampConverter)this.Converter;
converter.AddValue(dialog.Value);
Value = dialog.Value;
}
}
public ColorStopForm(ColorRampValueList values, int index)
{
this.values = values;
this.index = index;
InitializeComponent();
if (index >= 0)
{
colorPickerStopColor.Value = values.Values[index];
textBoxOffset.Text = values.Keys[index].ToString();
}
}