public Bitmap CreateImage(ImageSizeHelper imageSize, string basePath)
{
// Create Bitmap
Bitmap bmp = new Bitmap(imageSize.Width, imageSize.Height);
Graphics gh = Graphics.FromImage(bmp);
// Background
DrawImage(gh, imageSize, _imageSetting.Background, basePath);
// Zoom and Draw Image with Effect
try
{
Image img = ValidateFileAndGetImage(basePath);
DrawImage(gh, imageSize, (PositionModes)Enum.Parse(typeof(PositionModes), _imageSetting.PositionMode), img);
}
catch
{
}
// Draw Copyright Text
if (imageSize.Width * imageSize.Height < 100 * 100)
{
return(bmp);
}
try
{
SizeF textSize = gh.MeasureString(_imageSetting.Copyright, new Font("tahoma", 8.50f));
int textLeft = (int)(((double)imageSize.Width - (double)textSize.Width) / 2);
int textTop = (int)((double)imageSize.Height - (double)textSize.Height) - 2;
//gh.DrawString(_imageSetting.Copyright, new Font("tahoma", 8.00f), new SolidBrush(Color.FromArgb(200, 255, 255, 255)), (float)textLeft+1.0f, (float)textTop+1.0f);
gh.FillRectangle(new SolidBrush(Color.FromArgb(100, 255, 255, 255)), (float)textLeft, (float)textTop, textSize.Width, textSize.Height);
gh.DrawString(_imageSetting.Copyright, new Font("tahoma", 8.00f), new SolidBrush(Color.FromArgb(255, 0, 0, 0)), (float)textLeft, (float)textTop);
// Draw Watermark
textSize = gh.MeasureString(_imageSetting.Watermark, new Font("Arial", 16.00f, FontStyle.Bold));
textLeft = (int)(((double)imageSize.Width - (double)textSize.Width) / 2);
textTop = (int)(((double)imageSize.Height - (double)textSize.Height) / 2);
// gh.DrawString(_imageSetting.Watermark, new Font("Arial", 16.00f, FontStyle.Bold), new SolidBrush(Color.FromArgb(50, 0, 0, 0)), (float)textLeft+1.0f, (float)textTop+1.0f);
gh.DrawString(_imageSetting.Watermark, new Font("Arial", 16.00f, FontStyle.Bold), new SolidBrush(Color.FromArgb(150, 255, 255, 255)), (float)textLeft, (float)textTop);
}
catch
{
}
return(bmp);
}
public void DrawImage(Graphics graphics, ImageSizeHelper imageSize, PositionModes positionMode, Image imageObject)
{
#region Draw Base Image
try
{
Rectangle rect = new Rectangle();
double W = (double)imageSize.Width // Result Width
, H = (double)imageSize.Height // Result Heigth
, w = (double)imageObject.Width // Source Width
, h = (double)imageObject.Height; // Source Height
double RWH = W / H; // Result Ratio Width In Height
double rwh = w / h; // Source Ratio Width In Height
int Wi = (int)((H * w) / h); // image width after fit
int Hi = (int)((W * h) / w); // image heigth after fit
int Li = (int)((W - Wi) / 2); // image Left after fit
int Ti = (int)((H - Hi) / 2);
switch (positionMode)
{
case PositionModes.Stretch:
{
rect = new Rectangle(0, 0, imageSize.Width, imageSize.Height);
break;
}
case PositionModes.Title:
{
rect = new Rectangle(0, 0, imageSize.Width, imageSize.Height);
graphics.FillRectangle(new TextureBrush(imageObject, System.Drawing.Drawing2D.WrapMode.Tile), rect);
return;
}
case PositionModes.Fit:
{
if (RWH > rwh) // V Mode
{
rect = new Rectangle(Li, 0, Wi, imageSize.Height);
}
else // H Mode
{
rect = new Rectangle(0, Ti, imageSize.Width, Hi);
}
break;
}
case PositionModes.Fill:
{
if (RWH < rwh) // V Mode
{
rect = new Rectangle(Li, 0, Wi, imageSize.Height);
}
else // H Mode
{
rect = new Rectangle(0, Ti, imageSize.Width, Hi);
}
break;
}
case PositionModes.Center:
{
rect = new Rectangle((int)(((double)imageSize.Width - (double)imageObject.Width) / 2)
, (int)(((double)imageSize.Height - (double)imageObject.Height) / 2), imageObject.Width, imageObject.Height);
break;
}
}
graphics.SmoothingMode = SmoothingMode.Default;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.DrawImage(imageObject, rect);
}
catch
{
}
#endregion
}
/// <summary>
///
/// </summary>
/// <param name="graphics"></param>
/// <param name="imageSize"></param>
/// <param name="imageStructJsonFormatString">{PositionMode=[Fill|Fit|Stretch|Center|Title],BackColor=#ffff00,ImagePath=FullImagePath}</param>
public void DrawImage(Graphics graphics, ImageSizeHelper imageSize, string imageStructJsonFormatString, string basePath)
{
JsonDictionaryConverter convertor = new JsonDictionaryConverter(imageStructJsonFormatString);
PositionModes positionMode = PositionModes.Title;
if (convertor.GetDictionaryItem("PositionMode") != null)
{
positionMode = (PositionModes)Enum.Parse(typeof(PositionModes), convertor.GetDictionaryItem("PositionMode"));
}
if (convertor.GetDictionaryItem("BackColor") != null)
{
graphics.FillRectangle(new SolidBrush(System.Drawing.ColorTranslator.FromHtml(convertor.GetDictionaryItem("BackColor"))), new Rectangle(0, 0, imageSize.Width, imageSize.Height));
}
try
{
Image img = Image.FromFile(convertor.GetDictionaryItem("ImagePath"));
DrawImage(graphics, imageSize, positionMode, img);
}
catch
{
try
{
var page = System.Web.HttpContext.Current.Handler as System.Web.UI.Page;
Image img = Image.FromFile(page.MapPath("~") + convertor.GetDictionaryItem("ImagePath").Replace("/", "\\"));
DrawImage(graphics, imageSize, positionMode, img);
}
catch
{
try
{
System.Text.Encoding enc = new System.Text.UTF8Encoding();
string type = "Unknown Type";
try { type = System.Web.HttpContext.Current.Request.Files[0].ContentType.Replace("application/", "").Replace("-", " ").Replace("/", " "); }
catch { }// convertor.GetDictionaryItem("FileType").Replace("application/", "").Replace("-", " ").Replace("/", " ");
var bb = (enc).GetBytes(type).ToList();
var by = from x in bb.Cast <byte>()
let i = int.Parse(x.ToString())
select i;
byte r = (byte)by.ToList <int>()[0];
byte g = (byte)by.ToList <int>()[1];
byte b = (byte)by.ToList <int>()[2];
Color co = Color.FromArgb(255, r, g, b);
Color cf = Color.FromArgb(255, (byte)((int)r + 128), (byte)((int)g + 128), (byte)((int)b + 128));
if (type.Length > 20)
{
type = type.Substring(0, 20);
}
float fs = (float)type.Length * (-1.3f) + 23.92f;
if (fs < 10f)
{
fs = 10f;
}
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.GammaCorrected;
graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
graphics.FillRectangle(new SolidBrush(co), new RectangleF(0f, 0f, (float)imageSize.Width, (float)imageSize.Height));
graphics.DrawString(
type,
new Font("tahoma", fs, FontStyle.Bold, GraphicsUnit.Point),
new SolidBrush(cf),
new RectangleF(0f, 0f, (float)imageSize.Width, (float)imageSize.Height),
new StringFormat()
{
LineAlignment = StringAlignment.Center, FormatFlags = StringFormatFlags.DisplayFormatControl, Alignment = StringAlignment.Center
}
);
}
catch
{
}
}
}
}