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|
// Class that represents the collection of AcadColor
public class AcadColors : ObservableCollection<AcadColor>
{
public AcadColors()
: base()
{
// List of colors to show in the combo box
// along with their R,G,B values
Add(new AcadColor("ByLayer", 255, 255, 255));
Add(new AcadColor("ByBlock", 255, 255, 255));
Add(new AcadColor("Red", 255, 0, 0));
Add(new AcadColor("Yellow", 255, 255, 0));
Add(new AcadColor("Green", 0, 255, 0));
Add(new AcadColor("Cyan", 0, 255, 255));
Add(new AcadColor("Blue", 0, 0, 255));
Add(new AcadColor("Magenta", 255, 0, 255));
Add(new AcadColor("White", 255, 255, 255));
Add(new AcadColor("Select Colors...", 255, 255, 255));
}
// To check if a color with a given name
// exists in this collection
public bool Contains(String name)
{
for(int i = 0; i < Count; i++)
{
if(this[i].Name.Equals(name))
return true;
}
return false;
}
}
// Class that represents a single color
public class AcadColor
{
// Color Name
public String Name
{
get;
set;
}
// Brush to bind the label that displays the color
public System.Windows.Media.SolidColorBrush ColorBrush
{
get
{
SolidColorBrush brush
= new SolidColorBrush(
Color.FromRgb(Red, Green, Blue));
return brush;
}
}
// Red byte
public byte Red
{
get;
set;
}
// Green byte
public byte Green
{
get;
set;
}
// Blue byte
public byte Blue
{
get;
set;
}
// The Color combo displays a "Select color..." option
// In that case, we do not want to show the color label
public String IsVisible
{
get
{
if(Name.Contains("Select"))
return "Collapsed";
return "Visible";
}
}
public AcadColor(String name, byte R, byte G, byte B)
{
Name = name;
Red = R;
Green = G;
Blue = B;
}
public AcadColor()
{
Name = String.Empty;
Red = 255;
Green = 255;
Blue = 255;
}
}
// View Model for the Color Combo box to bind to
public class ColorViewModel : INotifyPropertyChanged
{
// collection of colors that we will display
AcadColors _myAcadColors = new AcadColors();
// Flag to know if we are displaying the color selection dialog
bool _showingColorDlg = false;
public ColorViewModel()
{
}
// Bound to the combo box source
public AcadColors MyAcadColors
{
get
{
return _myAcadColors;
}
}
// Default value to show
private string _colorString = "Red";
// Bound to the current selection in the combo
public string ColorString
{
get
{
return _colorString;
}
set
{
if (_colorString != value)
{
String colorName = value;
//The Color combo displays a "Select color..."
// option. If that is the option chosen,
// show the color pick dialog
if (! _showingColorDlg && value.Contains("Select"))
{// Show the color pick dialog
_showingColorDlg = true;
colorName = ShowColorDlg();
}
_showingColorDlg = false;
_colorString = colorName;
NotifyPropertyChanged("ColorString");
}
}
}
#region INotifyPropertyChanged Members
private void NotifyPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this,
new PropertyChangedEventArgs(propertyName));
}
}
public event PropertyChangedEventHandler PropertyChanged;
#endregion
// Displays the AutoCAD color pick dialog
// Method returns the name to be displayed in the combo box
public String ShowColorDlg()
{
Document doc
= Application.DocumentManager.MdiActiveDocument;
Editor ed = doc.Editor;
Autodesk.AutoCAD.Windows.ColorDialog dlg
= new Autodesk.AutoCAD.Windows.ColorDialog();
if (dlg.ShowDialog() != System.Windows.Forms.DialogResult.OK)
{
return String.Empty;
}
Autodesk.AutoCAD.Colors.Color clr = dlg.Color;
if (! clr.IsByAci)
{
if (clr.IsByLayer)
{
return "ByLayer";
}
else if (clr.IsByBlock)
{
return "ByBlock";
}
else
{
String colorName
= String.Format("{0},{1},{2}",
clr.Red, clr.Green, clr.Blue);
if(_myAcadColors.Contains(colorName) == false)
_myAcadColors.Insert(
_myAcadColors.Count - 1,
new AcadColor(
colorName,
clr.Red,
clr.Green,
clr.Blue
));
return colorName;
}
}
else
{
// Get the AutoCAD color index
short colIndex = clr.ColorIndex;
System.Byte byt = System.Convert.ToByte(colIndex);
int rgb
= Autodesk.AutoCAD.Colors.EntityColor.LookUpRgb(byt);
long b = (rgb & 0xffL);
long g = (rgb & 0xff00L) >> 8;
long r = rgb >> 16;
String colorName = String.Format("Color {0}", colIndex);
if (_myAcadColors.Contains(colorName) == false)
_myAcadColors.Insert(
_myAcadColors.Count - 1,
new AcadColor(
colorName,
(byte)r, (byte)g, (byte)b));
return colorName;
}
}
} |
