public static Image Zoom(Image source, int width, int height, bool isDeformation)
{
Image result;
if (isDeformation)
{
result = ImageTo.Zoom(source, width, height);
}
else
{
double num = (double)width / (double)source.Width;
double num2 = (double)height / (double)source.Height;
double num3 = (num > num2) ? num : num2;
int num4 = Convert.ToInt32((double)source.Width * num3);
int num5 = Convert.ToInt32((double)source.Height * num3);
num4 = ((num4 >= source.Width) ? source.Width : num4);
num5 = ((num5 >= source.Height) ? source.Height : num5);
Bitmap bitmap = new Bitmap(width, height);
Graphics graphics = Graphics.FromImage(bitmap);
graphics.Clear(Color.White);
graphics.DrawImage(source, (width - num4) / 2, (height - num5) / 2, num4, num5);
graphics.Dispose();
result = bitmap;
}
return(result);
}
public static Image Thumbnail(Image source, int percent)
{
int width = source.Width * percent / 100;
int height = source.Height * percent / 100;
return(ImageTo.Thumbnail(source, width, height));
}
public static Image Overlay(Image source, Image img, string overType, int opacity)
{
string text = overType.ToLower();
int x;
int y;
switch (text)
{
case "left":
x = 0;
y = (source.Height - img.Height) / 2;
goto IL_1B6;
case "right":
x = source.Width - img.Width;
y = (source.Height - img.Height) / 2;
goto IL_1B6;
case "top":
x = (source.Width - img.Width) / 2;
y = 0;
goto IL_1B6;
case "down":
x = (source.Width - img.Width) / 2;
y = source.Height - img.Height;
goto IL_1B6;
case "lefttop":
x = 0;
y = 0;
goto IL_1B6;
case "leftdown":
x = 0;
y = source.Height - img.Height;
goto IL_1B6;
case "righttop":
x = source.Width - img.Width;
y = 0;
goto IL_1B6;
case "rightdown":
x = source.Width - img.Width;
y = source.Height - img.Height;
goto IL_1B6;
}
x = (source.Width - img.Width) / 2;
y = (source.Height - img.Height) / 2;
IL_1B6:
return(ImageTo.Overlay(source, img, x, y, opacity));
}
public static Image Thumbnail(Image source, int width, int height)
{
int num = source.Width;
int num2 = source.Height;
double num3 = (double)width / (double)source.Width;
double num4 = (double)height / (double)source.Height;
double num5 = (num3 > num4) ? num3 : num4;
num = Convert.ToInt32((double)source.Width * num5);
num2 = Convert.ToInt32((double)source.Height * num5);
num = ((num >= source.Width) ? source.Width : num);
num2 = ((num2 >= source.Height) ? source.Height : num2);
Bitmap bitmap = new Bitmap(num, num2);
Graphics graphics = Graphics.FromImage(bitmap);
graphics.InterpolationMode = InterpolationMode.High;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.DrawImage(source, 0, 0, num, num2);
graphics.Dispose();
return(ImageTo.Cute(bitmap, (bitmap.Width - width) / 2, (bitmap.Height - height) / 2, width, height));
}
public static Image Overlay(Image source, string text, string overType, int opacity, int size, string font, string color)
{
Image img = ImageTo.FromString(text, size, font, color);
return(ImageTo.Overlay(source, img, overType, opacity));
}
public static Image Overlay(Image source, string text, string overType, int opacity)
{
Image img = ImageTo.FromString(text, 12, "宋体", "#ff0000");
return(ImageTo.Overlay(source, img, overType, opacity));
}
public static Image Overlay(Image source, Image img, int x, int y, int opacity)
{
img = ImageTo.Transparent(img, opacity);
return(ImageTo.Overlay(source, img, x, y));
}