小凡网,帝王惑弃妃刚及笄,c25混凝土配合比表
我要评论 /// <summary>
/// 图片水印
/// </summary>
/// <param name="imgpath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarkfilename">水印文件相对路径</param>
/// <param name="watermarkstatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="watermarktransparency">水印的透明度 1--10 10为不透明</param>
public static void addimagesignpic(string imgpath, string filename, string watermarkfilename, int watermarkstatus, int quality, int watermarktransparency)
{
if (!file.exists(utils.getmappath(imgpath)))
return;
byte[] _imagebytes = file.readallbytes(utils.getmappath(imgpath));
image img = image.fromstream(new system.io.memorystream(_imagebytes));
filename = utils.getmappath(filename);
if (watermarkfilename.startswith("/") == false)
watermarkfilename = "/" + watermarkfilename;
watermarkfilename = utils.getmappath(watermarkfilename);
if (!file.exists(watermarkfilename))
return;
graphics g = graphics.fromimage(img);
//设置高质量插值法
//g.interpolationmode = system.drawing.drawing2d.interpolationmode.high;
//设置高质量,低速度呈现平滑程度
//g.smoothingmode = system.drawing.drawing2d.smoothingmode.highquality;
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>
/// 文字水印
/// </summary>
/// <param name="imgpath">服务器图片相对路径</param>
/// <param name="filename">保存文件名</param>
/// <param name="watermarktext">水印文字</param>
/// <param name="watermarkstatus">图片水印位置 0=不使用 1=左上 2=中上 3=右上 4=左中 9=右下</param>
/// <param name="quality">附加水印图片质量,0-100</param>
/// <param name="fontname">字体</param>
/// <param name="fontsize">字体大小</param>
public static void addimagesigntext(string imgpath, string filename, string watermarktext, int watermarkstatus, int quality, string fontname, int fontsize)
{
byte[] _imagebytes = file.readallbytes(utils.getmappath(imgpath));
image img = image.fromstream(new system.io.memorystream(_imagebytes));
filename = utils.getmappath(filename);
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();
}
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