/// <summary>
/// Executes this filter on the input image and returns the result
/// </summary>
/// <param name="inputImage">input image</param>
/// <returns>transformed image</returns>
/// <example> This sample shows how to use the Polaroids ExcuteFilter
/// <code>
/// Image transformed;
/// PolaroidFrameFilter polaroid = new PolaroidFrameFilter();
/// polaroid.WithDropShadow = true;
/// polaroid.Caption = "Pitzi";
/// transformed = polaroid.ExecuteFilter(myImg);
///</code>
///</example>
public override Image ExecuteFilter(Image rawImage)
{
ResizeFilter myFilter = new ResizeFilter();
myFilter.Width = _width;
myFilter.Height = _height;
Image bpSrc = myFilter.ExecuteFilter(rawImage);
Bitmap bm = new Bitmap(bpSrc.Width + _borderWidth, bpSrc.Height + _borderHeight);
Graphics g = Graphics.FromImage(bm);
g.DrawImage(bpSrc, _borderWidth/2, 10);
g.DrawRectangle(new Pen(Color.Black), 0, 0, bpSrc.Width + _borderWidth - 1, bpSrc.Height + _borderHeight - 1);
int[] sizes = new int[] { 128, 64, 32, 16, 14, 12, 10, 8, 6, 4 };
Font crFont = null;
SizeF crSize = new SizeF();
string text = _caption;
int xCenterOfImg = (_width+_borderWidth)/2;
int yPosFromBottom = 10 + _height;
//Loop through the defined sizes checking the length of the Copyright string
//If its length in pixles is less then the image width choose this Font size.
for (int i = 0; i < sizes.Length; i++)
{
//set a Font object to Arial (i)pt, Bold
crFont = new Font("Lucida Handwriting", sizes[i], FontStyle.Bold);
//Measure the Copyright string in this Font
crSize = g.MeasureString(text, crFont);
if ((ushort)crSize.Width < (ushort)_width)
break;
}
//Define the text layout by setting the text alignment to centered
StringFormat StrFormat = new StringFormat();
StrFormat.Alignment = StringAlignment.Center;
//define a Brush which is semi trasparent black (Alpha set to 153)
SolidBrush semiTransBrush = new SolidBrush(_captionColor);
//Draw the Copyright string
g.DrawString(text, //string of text
crFont, //font
semiTransBrush, //Brush
new PointF(xCenterOfImg + 1, yPosFromBottom + 1), //Position
StrFormat);
//If drop shadow is turned on..
if (WithDropShadow)
{
DropShadowFilter drFilter = new DropShadowFilter();
bm = (Bitmap)drFilter.ExecuteFilter((Image)bm);
}
return bm;//
}