九宫格水印类
九宫格水印
public
class
WaterPicture
{
///
<summary>
///
加图片水印
///
</summary>
///
<param name="img">
来源System.Drawing.Image对象
</param>
///
<param name="filename">
完成后保存文件路径（物理路径）
</param>
///
<param name="watermarkFilename">
水印文件路径（物理路径）
</param>
///
<param name="watermarkStatus">
图片水印位置(9宫格位置1-9)
</param>
///
<param name="quality">
图片质量(1-100)
</param>
///
<param name="watermarkTransparency">
透明度（1-10）
</param>
public
static
void
AddImageSignPic(Image img,
string
filename,
string
watermarkFilename,
int
watermarkStatus,
int
quality,
int
watermarkTransparency)
{
Graphics g
=
Graphics.FromImage(img);
Image watermark
=
new
Bitmap(watermarkFilename);
if
(watermark.Height
>=
img.Height
||
watermark.Width
>=
img.Width)
{
return
;
}
ImageAttributes imageAttributes
=
new
ImageAttributes();
ColorMap colorMap
=
new
ColorMap();
colorMap.OldColor
=
Color.FromArgb(
255
,
0
,
255
,
0
);
colorMap.NewColor
=
Color.FromArgb(
0
,
0
,
0
,
0
);
ColorMap[] remapTable
=
{ colorMap };
imageAttributes.SetRemapTable(remapTable, ColorAdjustType.Bitmap);
float
transparency
=
0.5F
;
if
(watermarkTransparency
>=
1
&&
watermarkTransparency
<=
10
)
{
transparency
=
(watermarkTransparency
/
10.0F
);
}
float
[][] colorMatrixElements
=
{
new
float
[] {
1.0f
,
0.0f
,
0.0f
,
0.0f
,
0.0f
},
new
float
[] {
0.0f
,
1.0f
,
0.0f
,
0.0f
,
0.0f
},
new
float
[] {
0.0f
,
0.0f
,
1.0f
,
0.0f
,
0.0f
},
new
float
[] {
0.0f
,
0.0f
,
0.0f
, transparency,
0.0f
},
new
float
[] {
0.0f
,
0.0f
,
0.0f
,
0.0f
,
1.0f
}
};
ColorMatrix colorMatrix
=
new
ColorMatrix(colorMatrixElements);
imageAttributes.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
int
xpos
=
0
;
int
ypos
=
0
;
switch
(watermarkStatus)
{
case
1
:
xpos
=
(
int
)(img.Width
*
(
float
).
01
);
ypos
=
(
int
)(img.Height
*
(
float
).
01
);
break
;
case
2
:
xpos
=
(
int
)((img.Width
*
(
float
).
50
)
-
(watermark.Width
/
2
));
ypos
=
(
int
)(img.Height
*
(
float
).
01
);
break
;
case
3
:
xpos
=
(
int
)((img.Width
*
(
float
).
99
)
-
(watermark.Width));
ypos
=
(
int
)(img.Height
*
(
float
).
01
);
break
;
case
4
:
xpos
=
(
int
)(img.Width
*
(
float
).
01
);
ypos
=
(
int
)((img.Height
*
(
float
).
50
)
-
(watermark.Height
/
2
));
break
;
case
5
:
xpos
=
(
int
)((img.Width
*
(
float
).
50
)
-
(watermark.Width
/
2
));
ypos
=
(
int
)((img.Height
*
(
float
).
50
)
-
(watermark.Height
/
2
));
break
;
case
6
:
xpos
=
(
int
)((img.Width
*
(
float
).
99
)
-
(watermark.Width));
ypos
=
(
int
)((img.Height
*
(
float
).
50
)
-
(watermark.Height
/
2
));
break
;
case
7
:
xpos
=
(
int
)(img.Width
*
(
float
).
01
);
ypos
=
(
int
)((img.Height
*
(
float
).
99
)
-
watermark.Height);
break
;
case
8
:
xpos
=
(
int
)((img.Width
*
(
float
).
50
)
-
(watermark.Width
/
2
));
ypos
=
(
int
)((img.Height
*
(
float
).
99
)
-
watermark.Height);
break
;
case
9
:
xpos
=
(
int
)((img.Width
*
(
float
).
99
)
-
(watermark.Width));
ypos
=
(
int
)((img.Height
*
(
float
).
99
)
-
watermark.Height);
break
;
}
g.DrawImage(watermark,
new
Rectangle(xpos, ypos, watermark.Width, watermark.Height),
0
,
0
, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
ImageCodecInfo[] codecs
=
ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici
=
null
;
foreach
(ImageCodecInfo codec
in
codecs)
{
if
(codec.MimeType.IndexOf(
"
jpeg
"
)
>
-
1
)
{
ici
=
codec;
}
}
EncoderParameters encoderParams
=
new
EncoderParameters();
long
[] qualityParam
=
new
long
[
1
];
if
(quality
<
0
||
quality
>
100
)
{
quality
=
80
;
}
qualityParam[
0
]
=
quality;
EncoderParameter encoderParam
=
new
EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[
0
]
=
encoderParam;
if
(ici
!=
null
)
{
img.Save(filename, ici, encoderParams);
}
else
{
img.Save(filename);
}
g.Dispose();
img.Dispose();
watermark.Dispose();
imageAttributes.Dispose();
}
///
<summary>
///
增加图片文字水印
///
</summary>
///
<param name="filename">
文件名
</param>
///
<param name="watermarkText">
水印文字
</param>
///
<param name="watermarkStatus">
图片水印位置
</param>
public
static
void
AddImageSignText(Image img,
string
filename,
string
watermarkText,
int
watermarkStatus,
int
quality,
string
fontname,
int
fontsize)
{
Graphics g
=
Graphics.FromImage(img);
Font drawFont
=
new
Font(fontname, fontsize, FontStyle.Regular, GraphicsUnit.Pixel);
SizeF crSize;
crSize
=
g.MeasureString(watermarkText, drawFont);
float
xpos
=
0
;
float
ypos
=
0
;
switch
(watermarkStatus)
{
case
1
:
xpos
=
(
float
)img.Width
*
(
float
).
01
;
ypos
=
(
float
)img.Height
*
(
float
).
01
;
break
;
case
2
:
xpos
=
((
float
)img.Width
*
(
float
).
50
)
-
(crSize.Width
/
2
);
ypos
=
(
float
)img.Height
*
(
float
).
01
;
break
;
case
3
:
xpos
=
((
float
)img.Width
*
(
float
).
99
)
-
crSize.Width;
ypos
=
(
float
)img.Height
*
(
float
).
01
;
break
;
case
4
:
xpos
=
(
float
)img.Width
*
(
float
).
01
;
ypos
=
((
float
)img.Height
*
(
float
).
50
)
-
(crSize.Height
/
2
);
break
;
case
5
:
xpos
=
((
float
)img.Width
*
(
float
).
50
)
-
(crSize.Width
/
2
);
ypos
=
((
float
)img.Height
*
(
float
).
50
)
-
(crSize.Height
/
2
);
break
;
case
6
:
xpos
=
((
float
)img.Width
*
(
float
).
99
)
-
crSize.Width;
ypos
=
((
float
)img.Height
*
(
float
).
50
)
-
(crSize.Height
/
2
);
break
;
case
7
:
xpos
=
(
float
)img.Width
*
(
float
).
01
;
ypos
=
((
float
)img.Height
*
(
float
).
99
)
-
crSize.Height;
break
;
case
8
:
xpos
=
((
float
)img.Width
*
(
float
).
50
)
-
(crSize.Width
/
2
);
ypos
=
((
float
)img.Height
*
(
float
).
99
)
-
crSize.Height;
break
;
case
9
:
xpos
=
((
float
)img.Width
*
(
float
).
99
)
-
crSize.Width;
ypos
=
((
float
)img.Height
*
(
float
).
99
)
-
crSize.Height;
break
;
}
g.DrawString(watermarkText, drawFont,
new
SolidBrush(Color.White), xpos
+
1
, ypos
+
1
);
g.DrawString(watermarkText, drawFont,
new
SolidBrush(Color.Black), xpos, ypos);
ImageCodecInfo[] codecs
=
ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici
=
null
;
foreach
(ImageCodecInfo codec
in
codecs)
{
if
(codec.MimeType.IndexOf(
"
jpeg
"
)
>
-
1
)
{
ici
=
codec;
}
}
EncoderParameters encoderParams
=
new
EncoderParameters();
long
[] qualityParam
=
new
long
[
1
];
if
(quality
<
0
||
quality
>
100
)
{
quality
=
80
;
}
qualityParam[
0
]
=
quality;
EncoderParameter encoderParam
=
new
EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[
0
]
=
encoderParam;
if
(ici
!=
null
)
{
img.Save(filename, ici, encoderParams);
}
else
{
img.Save(filename);
}
g.Dispose();
img.Dispose();
}
///
<summary>
///
(重载) 增加图片文字水印
///
</summary>
///
<param name="filename">
文件名
</param>
///
<param name="watermarkText">
水印文字
</param>
///
<param name="watermarkStatus">
图片水印位置
</param>
///
<param name="fontcolor">
图片水印颜色
</param>
public
static
void
AddImageSignText(Image img,
string
filename,
string
watermarkText,
int
watermarkStatus,
int
quality,
string
fontname,
int
fontsize,
string
fontcolor)
{
Graphics g
=
Graphics.FromImage(img);
Font drawFont
=
new
Font(fontname, fontsize, FontStyle.Regular, GraphicsUnit.Pixel);
SizeF crSize;
crSize
=
g.MeasureString(watermarkText, drawFont);
float
xpos
=
0
;
float
ypos
=
0
;
switch
(watermarkStatus)
{
case
1
:
xpos
=
(
float
)img.Width
*
(
float
).
01
;
ypos
=
(
float
)img.Height
*
(
float
).
01
;
break
;
case
2
:
xpos
=
((
float
)img.Width
*
(
float
).
50
)
-
(crSize.Width
/
2
);
ypos
=
(
float
)img.Height
*
(
float
).
01
;
break
;
case
3
:
xpos
=
((
float
)img.Width
*
(
float
).
99
)
-
crSize.Width;
ypos
=
(
float
)img.Height
*
(
float
).
01
;
break
;
case
4
:
xpos
=
(
float
)img.Width
*
(
float
).
01
;
ypos
=
((
float
)img.Height
*
(
float
).
50
)
-
(crSize.Height
/
2
);
break
;
case
5
:
xpos
=
((
float
)img.Width
*
(
float
).
50
)
-
(crSize.Width
/
2
);
ypos
=
((
float
)img.Height
*
(
float
).
50
)
-
(crSize.Height
/
2
);
break
;
case
6
:
xpos
=
((
float
)img.Width
*
(
float
).
99
)
-
crSize.Width;
ypos
=
((
float
)img.Height
*
(
float
).
50
)
-
(crSize.Height
/
2
);
break
;
case
7
:
xpos
=
(
float
)img.Width
*
(
float
).
01
;
ypos
=
((
float
)img.Height
*
(
float
).
99
)
-
crSize.Height;
break
;
case
8
:
xpos
=
((
float
)img.Width
*
(
float
).
50
)
-
(crSize.Width
/
2
);
ypos
=
((
float
)img.Height
*
(
float
).
99
)
-
crSize.Height;
break
;
case
9
:
xpos
=
((
float
)img.Width
*
(
float
).
99
)
-
crSize.Width;
ypos
=
((
float
)img.Height
*
(
float
).
99
)
-
crSize.Height;
break
;
}
g.DrawString(watermarkText, drawFont,
new
SolidBrush(Color.White), xpos
+
1
, ypos
+
1
);
g.DrawString(watermarkText, drawFont,
new
SolidBrush(ColorTranslator.FromHtml(fontcolor)), xpos, ypos);
//
g.DrawString(watermarkText, drawFont, new SolidBrush(Color.FromName(fontcolor)), xpos, ypos);
ImageCodecInfo[] codecs
=
ImageCodecInfo.GetImageEncoders();
ImageCodecInfo ici
=
null
;
foreach
(ImageCodecInfo codec
in
codecs)
{
if
(codec.MimeType.IndexOf(
"
jpeg
"
)
>
-
1
)
{
ici
=
codec;
}
}
EncoderParameters encoderParams
=
new
EncoderParameters();
long
[] qualityParam
=
new
long
[
1
];
if
(quality
<
0
||
quality
>
100
)
{
quality
=
80
;
}
qualityParam[
0
]
=
quality;
EncoderParameter encoderParam
=
new
EncoderParameter(System.Drawing.Imaging.Encoder.Quality, qualityParam);
encoderParams.Param[
0
]
=
encoderParam;
if
(ici
!=
null
)
{
img.Save(filename, ici, encoderParams);
}
else
{
img.Save(filename);
}
g.Dispose();
img.Dispose();
}
}