/// <summary>
/// 加水印文字
/// </summary>
/// <param name="picture">imge 对象</param>
/// <param name="_width">原始图片的宽度</param>
/// <param name="_height">原始图片的高度.</param>
private void addWatermarkText(Graphics picture, int _width, int _height, HTProject_Bizlogic.CommonEnum.WaterMarkPosition Pos)
{
int[] sizes = new int[] { 16, 14, 12, 10, 8, 6, 4 };
Font crFont = null;
SizeF crSize = new SizeF();
for (int i = 0; i < 7; i++)
{
crFont = new Font("arial", sizes[i], FontStyle.Bold);
crSize = picture.MeasureString(this.WatermarkText, crFont);
if ((ushort)crSize.Width < (ushort)_width)
{
break;
}
}
float xpos = 0;
float ypos = 0;
switch (Pos)
{
case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.TOP_LEFT:
xpos = ((float)_width * (float).01) + (crSize.Width / 2);
ypos = (float)_height * (float).01;
break;
case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.TOP_RIGHT:
xpos = ((float)_width * (float).99) - (crSize.Width / 2);
ypos = (float)_height * (float).01;
break;
case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.BOTTOM_RIGHT:
xpos = ((float)_width * (float).99) - (crSize.Width / 2);
ypos = ((float)_height * (float).99) - crSize.Height;
break;
case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.BOTTOM_LEFT:
xpos = ((float)_width * (float).01) + (crSize.Width / 2);
ypos = ((float)_height * (float).99) - crSize.Height;
break;
}
StringFormat StrFormat = new StringFormat();
StrFormat.Alignment = StringAlignment.Center;
SolidBrush semiTransBrush2 = new SolidBrush(Color.FromArgb(153, 0, 0, 0));
picture.DrawString(this.WatermarkText, crFont, semiTransBrush2, xpos + 1, ypos + 1, StrFormat);
SolidBrush semiTransBrush = new SolidBrush(Color.FromArgb(153, 255, 255, 255));
picture.DrawString(this.WatermarkText, crFont, semiTransBrush, xpos, ypos, StrFormat);
semiTransBrush2.Dispose();
semiTransBrush.Dispose();
}
/// <summary>
/// 加水印图片
/// </summary>
/// <param name="picture">imge 对象</param>
/// <param name="_width">原始图片的宽度</param>
/// <param name="_height">原始图片的高度.</param>
private void addWatermarkImage(Graphics picture, int _width, int _height, HTProject_Bizlogic.CommonEnum.WaterMarkPosition Pos)
{
if (!System.IO.File.Exists(this.Page.MapPath(this.WatermarkImageUrl)))
{
return;
}
System.Drawing.Image watermark = new Bitmap(this.Page.MapPath(this.WatermarkImageUrl));
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[][] 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, 0.3f, 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;
int WatermarkWidth = 0;
int WatermarkHeight = 0;
double bl = 1d;
WatermarkWidth = watermark.Width; //Convert.ToInt32(_width);
WatermarkHeight = watermark.Height; // Convert.ToInt32(_height);
//picture.DrawImage(watermark, new Rectangle(xpos, ypos, WatermarkWidth, WatermarkHeight), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
//循环加上水印
for (int y = 0; y < _height; y = y + WatermarkHeight * 2)
{
for (int x = 0; x < _width; x = x + WatermarkWidth * 2)
{
xpos = x;
ypos = y;
picture.DrawImage(watermark, new Rectangle(xpos, ypos, WatermarkWidth, WatermarkHeight), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
}
}
watermark.Dispose();
imageAttributes.Dispose();
}
/// <summary>
/// 加水印图片
/// </summary>
/// <param name="picture">imge 对象</param>
/// <param name="_width">原始图片的宽度</param>
/// <param name="_height">原始图片的高度.</param>
private void addWatermarkImage(Graphics picture, int _width, int _height, HTProject_Bizlogic.CommonEnum.WaterMarkPosition Pos)
{
if (!System.IO.File.Exists(this.Page.MapPath(this.WatermarkImageUrl)))
{
return;
}
System.Drawing.Image watermark = new Bitmap(this.Page.MapPath(this.WatermarkImageUrl));
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[][] 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, 0.3f, 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;
int WatermarkWidth = 0;
int WatermarkHeight = 0;
double bl = 1d;
//计算水印图片的比率
//取背景的1/4宽度来比较
//if ((_width > watermark.Width * 4) && (_height > watermark.Height * 4))
//{
// bl = 1;
//}
//else if ((_width > watermark.Width * 4) && (_height < watermark.Height * 4))
//{
// bl = Convert.ToDouble(_height / 4) / Convert.ToDouble(watermark.Height);
//}
//else
// if ((_width < watermark.Width * 4) && (_height > watermark.Height * 4))
// {
// bl = Convert.ToDouble(_width / 4) / Convert.ToDouble(watermark.Width);
// }
// else
// {
// if ((_width * watermark.Height) > (_height * watermark.Width))
// {
// bl = Convert.ToDouble(_height / 4) / Convert.ToDouble(watermark.Height);
// }
// else
// {
// bl = Convert.ToDouble(_width / 4) / Convert.ToDouble(watermark.Width);
// }
// }
WatermarkWidth = watermark.Width; //Convert.ToInt32(_width);
WatermarkHeight = watermark.Height; // Convert.ToInt32(_height);
//switch (Pos)
//{
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.TOP_LEFT:
// xpos = 0;
// ypos = 0;
// break;
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.TOP_RIGHT:
// xpos = _width - WatermarkWidth - 10;
// ypos = 10;
// break;
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.BOTTOM_RIGHT:
// xpos = _width - WatermarkWidth - 10;
// ypos = _height - WatermarkHeight - 10;
// break;
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.BOTTOM_LEFT:
// xpos = 0;
// ypos = _height - WatermarkHeight - 10;
// break;
//}
//picture.DrawImage(watermark, new Rectangle(xpos, ypos, WatermarkWidth, WatermarkHeight), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
//循环加上水印
for (int y = 0; y < _height; y = y + WatermarkHeight)
{
for (int x = 0; x < _width; x = x + WatermarkWidth)
{
//switch (Pos)
//{
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.TOP_LEFT:
// xpos = 0;
// ypos = 0;
// break;
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.TOP_RIGHT:
// xpos = _width - WatermarkWidth - 10;
// ypos = 10;
// break;
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.BOTTOM_RIGHT:
// xpos = _width - WatermarkWidth - 10;
// ypos = _height - WatermarkHeight - 10;
// break;
// case HTProject_Bizlogic.CommonEnum.WaterMarkPosition.BOTTOM_LEFT:
// xpos = 0;
// ypos = _height - WatermarkHeight - 10;
// break;
//}
xpos = x;
ypos = y;
picture.DrawImage(watermark, new Rectangle(xpos, ypos, WatermarkWidth, WatermarkHeight), 0, 0, watermark.Width, watermark.Height, GraphicsUnit.Pixel, imageAttributes);
}
}
watermark.Dispose();
imageAttributes.Dispose();
}
