public static ColorPattern FetchColor()
{
// Create an HTTP web request using the URL:
string url = "http://www.colourlovers.com/api/colors/random";
ColorPattern ReturnColorPattern = new ColorPattern();
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));
request.ContentType = "application/json";
request.Method = "GET";
try {
// Send the request to the server and get the response:
using (WebResponse response = request.GetResponse()) {
// Get a stream representation of the HTTP web response:
using (Stream stream = response.GetResponseStream()) {
// Read the content.
StreamReader reader = new StreamReader(stream);
string responseFromServer = reader.ReadToEnd();
//Load XML
XmlDocument doc = new XmlDocument();
doc.LoadXml(responseFromServer);
XmlNodeList colorsList = doc.SelectNodes("colors");
//Get Color Elements
foreach (XmlNode colors in colorsList)
{
XmlNodeList ColorNodeList = colors.SelectNodes("color");
foreach (XmlNode color in ColorNodeList)
{
XmlNodeList RGBNodeList = color.SelectNodes("rgb");
foreach (XmlNode RGB in RGBNodeList)
{
ReturnColorPattern.R = Convert.ToInt16(RGB ["red"].InnerText);
ReturnColorPattern.G = Convert.ToInt16(RGB ["green"].InnerText);
ReturnColorPattern.B = Convert.ToInt16(RGB ["blue"].InnerText);
}
}
}
}
}
if (ReturnColorPattern.R == 0 && ReturnColorPattern.G == 0 && ReturnColorPattern.G == 0)
{
//No internet connection or invalid xml
//Fill Random colors
Random randonGen = new Random();
ReturnColorPattern.R = randonGen.Next(256);
ReturnColorPattern.G = randonGen.Next(256);
ReturnColorPattern.B = randonGen.Next(256);
}
} catch {
//Something went worng
//Fill Random colors
Random randonGen = new Random();
ReturnColorPattern.R = randonGen.Next(256);
ReturnColorPattern.G = randonGen.Next(256);
ReturnColorPattern.B = randonGen.Next(256);
}
return(ReturnColorPattern);
}
private void TouchMeImageViewOnTouch(object sender, View.TouchEventArgs touchEventArgs)
{
ShapeImage imageView = sender as ShapeImage;
switch (touchEventArgs.Event.Action)
{
case MotionEventActions.Down:
// Store Current location to global variables
ShapeMoveX = touchEventArgs.Event.GetX();
ShapeMoveY = touchEventArgs.Event.GetY();
imageView.BuildDrawingCache(true);
Bitmap bitMap = imageView.GetDrawingCache(true);
ColorPattern FillColors = ColorHandler.FetchColor();
//Get Canvas
Canvas canvas = new Canvas(bitMap);
Paint paint = new Paint();
paint.SetARGB(255, FillColors.R, FillColors.G, FillColors.B);
//Check Image Type and Change colors
if (imageView.Shape.GetType() == typeof(Circle))
{
Circle cr = (Circle)imageView.Shape;
canvas.DrawCircle(cr.X, cr.Y, cr.Radius, paint);
}
else
{
Rectangle Rect = (Rectangle)imageView.Shape;
canvas.DrawPaint(paint);
canvas.DrawRect(0, 0, Rect.Height, Rect.Width, paint);
}
imageView.SetImageBitmap(bitMap);
break;
case MotionEventActions.Move:
//Move Imageview to new location
ObjectAnimator animX = ObjectAnimator.OfFloat(imageView, "x", touchEventArgs.Event.RawX + 50);
ObjectAnimator animY = ObjectAnimator.OfFloat(imageView, "y", touchEventArgs.Event.RawY + 50);
AnimatorSet animSetXY = new AnimatorSet();
animSetXY.PlayTogether(animX, animY);
animSetXY.Start();
break;
}
}
//To Handle OnTouch Event of Main Layout
public bool OnTouch(View v, MotionEvent e)
{
//Get Main Layout Object
RelativeLayout mainLayout = FindViewById <RelativeLayout> (Resource.Id.maincontainer);
switch (e.Action)
{
case MotionEventActions.Down:
//Cretae new Extended Image View
ShapeImage imageView = new ShapeImage(this);
//Create Bitmap and canvas to Fill Image
Bitmap bitMap = Bitmap.CreateBitmap(150, 150, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(bitMap);
Paint paint = new Paint();
// Fetch the colors
// This will handle colors from Web API if internet connection available
ColorPattern FillColors = ColorHandler.FetchColor();
//Piant from Generated colors
paint.SetARGB(255, FillColors.R, FillColors.G, FillColors.B);
//To Generate Random Numbers
Random randonNum = new Random();
//To Handle Circle or Square in Random
if (randonNum.Next(0, 2) == 0)
{
//Drow Cicrle
Circle circleView = new Circle();
float size = randonNum.Next(10, 75);;
//Fix Circle Size
circleView.X = size;
circleView.Y = size;
circleView.Radius = size;
canvas.DrawCircle(circleView.X, circleView.Y, circleView.Radius, paint);
//Tag Imageview as Circle
imageView.Shape = circleView;
}
else
{
//Drow Square
Rectangle rect = new Rectangle();
float size = randonNum.Next(10, 100);
rect.Height = size;
rect.Width = size;
canvas.DrawRect(0, 0, rect.Height, rect.Width, paint);
//Tag Image as Rectangle
imageView.Shape = rect;
}
//Fill Image
imageView.SetImageBitmap(bitMap);
//Adjust Image position
imageView.SetX(e.GetX() - 50);
imageView.SetY(e.GetY() - 50);
//To Handle Touch event on Dynamically created Image view
imageView.Touch += TouchMeImageViewOnTouch;
//Finally, Add Image view to Current Layout
mainLayout.AddView(imageView);
break;
case MotionEventActions.Move:
break;
}
return(true);
}
