// 2016/10/5 改造为利用下级 Bitmap 函数
// parameters:
// nWidth 控制折行的位置
public static MemoryStream BuildArtText(
string strText,
string strFontFace,
float fFontSize,
FontStyle fontstyle,
Color colorText,
Color colorBack,
Color colorShadow,
ArtEffect effect,
ImageFormat imageformat,
int nWidth = 500)
{
// 正式的图像
using (Bitmap bitmapDest = BuildArtText(strText,
strFontFace,
fFontSize,
fontstyle,
colorText,
colorBack,
colorShadow,
effect,
nWidth))
{
MemoryStream stream = new MemoryStream();
if (imageformat == ImageFormat.Png &&
colorBack == Color.Transparent)
{
bitmapDest.MakeTransparent(colorBack);
}
if (imageformat == ImageFormat.Gif)
{
bitmapDest.MakeTransparent(
colorBack);
OctreeQuantizer quantizer = new OctreeQuantizer(255, 8);
quantizer.TransparentColor = colorBack;
using (Bitmap quantized = quantizer.Quantize(bitmapDest))
{
quantized.Save(stream, imageformat);
}
}
else
{
bitmapDest.Save(stream, imageformat); // System.Drawing.Imaging.ImageFormat.Jpeg
}
return(stream);
}
}
// parameters:
// nWidth 控制折行的位置
public static MemoryStream BuildArtText(
string strText,
string strFontFace,
float fFontSize,
FontStyle fontstyle,
Color colorText,
Color colorBack,
Color colorShadow,
ArtEffect effect,
ImageFormat imageformat,
int nWidth = 500)
{
SizeF size;
using (Font font = new Font(strFontFace, fFontSize, fontstyle))
{
using (Bitmap bitmapTemp = new Bitmap(1, 1))
{
using (Graphics graphicsTemp = Graphics.FromImage(bitmapTemp))
{
size = graphicsTemp.MeasureString(
strText,
font,
nWidth);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
size.Height += 2;
size.Width += 2;
}
}
}
// 正式的图像
using (Bitmap bitmapDest = new Bitmap((int)size.Width + 1, (int)size.Height + 1, PixelFormat.Format64bppPArgb))
{
using (Graphics objGraphics = Graphics.FromImage(bitmapDest))
{
// colorBack = Color.FromArgb(0, colorBack);
objGraphics.Clear(colorBack);// Color.Transparent
//
objGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
// System.Drawing.Text.TextRenderingHint oldrenderhint = objGraphics.TextRenderingHint;
//设置高质量,低速度呈现平滑程度
objGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
// objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Near;
stringFormat.LineAlignment = StringAlignment.Center; // 2016/5/24
// Color.FromArgb(128, 100, 100, 100)
using (Brush objBrush = new SolidBrush(colorText)) // 透明颜色 ' Color.Black
{
RectangleF rect = new RectangleF(0, 0, size.Width, size.Height);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
using (Brush objBrushShadow = new SolidBrush(colorShadow))
{
RectangleF rectShadow = new RectangleF(rect.X,
rect.Y, rect.Width, rect.Height);
rectShadow.Offset(2, 2);
objGraphics.DrawString(strText,
font,
objBrushShadow,
rectShadow,
stringFormat);
}
}
objGraphics.DrawString(strText,
font,
objBrush,
rect,
stringFormat);
}
}
MemoryStream stream = new MemoryStream();
/*
* stream = SaveGIFWithNewColorTable(
* bitmapDest,
* 256,
* true);
*/
if (imageformat == ImageFormat.Png &&
colorBack == Color.Transparent)
{
bitmapDest.MakeTransparent(colorBack);
}
if (imageformat == ImageFormat.Gif)
{
bitmapDest.MakeTransparent(
colorBack);
OctreeQuantizer quantizer = new OctreeQuantizer(255, 8);
quantizer.TransparentColor = colorBack;
using (Bitmap quantized = quantizer.Quantize(bitmapDest))
{
quantized.Save(stream, imageformat);
}
}
else
{
bitmapDest.Save(stream, imageformat); // System.Drawing.Imaging.ImageFormat.Jpeg
}
return(stream);
}
}
}
// parameters:
// nWidth 控制折行的位置
public static Bitmap BuildArtText(
string strText,
string strFontFace,
float fFontSize,
FontStyle fontstyle,
Color colorText,
Color colorBack,
Color colorShadow,
ArtEffect effect,
// ImageFormat imageformat,
int nWidth = 500)
{
Bitmap bitmapDest = null;
SizeF size;
SizeF sizeSingleLine;
using (Font font = new Font(strFontFace, fFontSize, fontstyle))
{
using (Bitmap bitmapTemp = new Bitmap(1, 1))
{
using (Graphics graphicsTemp = Graphics.FromImage(bitmapTemp))
{
sizeSingleLine = graphicsTemp.MeasureString(
"1234",
font,
nWidth);
size = graphicsTemp.MeasureString(
strText,
font,
nWidth);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
size.Height += 2;
size.Width += 2;
}
}
}
// 正式的图像
bitmapDest = new Bitmap((int)size.Width + 1, (int)size.Height + 1, PixelFormat.Format64bppPArgb);
using (Graphics objGraphics = Graphics.FromImage(bitmapDest))
{
// colorBack = Color.FromArgb(0, colorBack);
objGraphics.Clear(colorBack);// Color.Transparent
//
objGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
// System.Drawing.Text.TextRenderingHint oldrenderhint = objGraphics.TextRenderingHint;
//设置高质量,低速度呈现平滑程度
objGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
// 注: 当文字行较多时，AntiAlias 会引起上部的字发虚缺扫描行的问题
if ((int)(size.Height / sizeSingleLine.Height) <= 10)
{
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
}
else
{
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixelGridFit;
}
// objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixelGridFit;
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Near;
stringFormat.LineAlignment = StringAlignment.Center; // 2016/5/24
// Color.FromArgb(128, 100, 100, 100)
using (Brush objBrush = new SolidBrush(colorText)) // 透明颜色 ' Color.Black
{
RectangleF rect = new RectangleF(0, 0, size.Width, size.Height);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
using (Brush objBrushShadow = new SolidBrush(colorShadow))
{
RectangleF rectShadow = new RectangleF(rect.X,
rect.Y, rect.Width, rect.Height);
rectShadow.Offset(2, 2);
objGraphics.DrawString(strText,
font,
objBrushShadow,
rectShadow,
stringFormat);
}
}
objGraphics.DrawString(strText,
font,
objBrush,
rect,
stringFormat);
}
}
}
return(bitmapDest);
}
// parameters:
// nWidth 控制折行的位置
public static MemoryStream BuildArtText(
string strText,
string strFontFace,
float fFontSize,
FontStyle fontstyle,
Color colorText,
Color colorBack,
Color colorShadow,
ArtEffect effect,
ImageFormat imageformat,
int nWidth = 500)
{
Bitmap bitmapTemp = new Bitmap(1, 1);
SizeF size;
Font font = new Font(strFontFace, fFontSize, fontstyle);
try
{
Graphics graphicsTemp = Graphics.FromImage(bitmapTemp);
size = graphicsTemp.MeasureString(
strText,
font,
nWidth);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
size.Height += 2;
size.Width += 2;
}
}
finally
{
bitmapTemp.Dispose();
bitmapTemp = null;
}
// 正式的图像
Bitmap bitmapDest = new Bitmap((int)size.Width + 1, (int)size.Height + 1, PixelFormat.Format64bppPArgb);
try
{
Graphics objGraphics = Graphics.FromImage(bitmapDest);
// colorBack = Color.FromArgb(0, colorBack);
objGraphics.Clear(colorBack);// Color.Transparent
//
objGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
// System.Drawing.Text.TextRenderingHint oldrenderhint = objGraphics.TextRenderingHint;
//设置高质量,低速度呈现平滑程度
objGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
// objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
StringFormat stringFormat = new StringFormat();
/*
// 随机产生一个倾斜角度
Random random = new Random(unchecked((int)DateTime.Now.Ticks));
int angle = random.Next(-10, 10);
objGraphics.RotateTransform(angle);
*/
stringFormat.Alignment = StringAlignment.Near;
/*
if (angle > 0)
stringFormat.LineAlignment = StringAlignment.Near;
else
stringFormat.LineAlignment = StringAlignment.Far;
*/
// Color.FromArgb(128, 100, 100, 100)
SolidBrush objBrush = new SolidBrush(colorText); // 透明颜色 ' Color.Black
RectangleF rect = new RectangleF(0, 0, size.Width, size.Height);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
SolidBrush objBrushShadow = new SolidBrush(colorShadow);
RectangleF rectShadow = new RectangleF(rect.X,
rect.Y, rect.Width, rect.Height);
rectShadow.Offset(2, 2);
objGraphics.DrawString(strText,
font,
objBrushShadow,
rectShadow,
stringFormat);
}
objGraphics.DrawString(strText,
font,
objBrush,
rect,
stringFormat);
MemoryStream stream = new MemoryStream();
/*
stream = SaveGIFWithNewColorTable(
bitmapDest,
256,
true);
*/
if (imageformat == ImageFormat.Png
&& colorBack == Color.Transparent)
{
bitmapDest.MakeTransparent(colorBack);
}
if (imageformat == ImageFormat.Gif)
{
bitmapDest.MakeTransparent(
colorBack);
OctreeQuantizer quantizer = new OctreeQuantizer(255, 8);
quantizer.TransparentColor = colorBack;
using (Bitmap quantized = quantizer.Quantize(bitmapDest))
{
quantized.Save(stream, imageformat);
}
}
else
{
bitmapDest.Save(stream, imageformat); // System.Drawing.Imaging.ImageFormat.Jpeg
}
return stream;
}
finally
{
bitmapDest.Dispose();
}
}
// parameters:
// nWidth 控制折行的位置
public static Bitmap BuildArtText(
string strText,
string strFontFace,
float fFontSize,
FontStyle fontstyle,
Color colorText,
Color colorBack,
Color colorShadow,
ArtEffect effect,
// ImageFormat imageformat,
int nWidth = 500)
{
Bitmap bitmapDest = null;
SizeF size;
using (Font font = new Font(strFontFace, fFontSize, fontstyle))
{
using (Bitmap bitmapTemp = new Bitmap(1, 1))
{
using (Graphics graphicsTemp = Graphics.FromImage(bitmapTemp))
{
size = graphicsTemp.MeasureString(
strText,
font,
nWidth);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
size.Height += 2;
size.Width += 2;
}
}
}
// 正式的图像
bitmapDest = new Bitmap((int)size.Width + 1, (int)size.Height + 1, PixelFormat.Format64bppPArgb);
using (Graphics objGraphics = Graphics.FromImage(bitmapDest))
{
// colorBack = Color.FromArgb(0, colorBack);
objGraphics.Clear(colorBack);// Color.Transparent
//
objGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
// System.Drawing.Text.TextRenderingHint oldrenderhint = objGraphics.TextRenderingHint;
//设置高质量,低速度呈现平滑程度
objGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
// objGraphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;
StringFormat stringFormat = new StringFormat();
stringFormat.Alignment = StringAlignment.Near;
stringFormat.LineAlignment = StringAlignment.Center; // 2016/5/24
// Color.FromArgb(128, 100, 100, 100)
using (Brush objBrush = new SolidBrush(colorText)) // 透明颜色 ' Color.Black
{
RectangleF rect = new RectangleF(0, 0, size.Width, size.Height);
if ((effect & ArtEffect.Shadow) == ArtEffect.Shadow)
{
using (Brush objBrushShadow = new SolidBrush(colorShadow))
{
RectangleF rectShadow = new RectangleF(rect.X,
rect.Y, rect.Width, rect.Height);
rectShadow.Offset(2, 2);
objGraphics.DrawString(strText,
font,
objBrushShadow,
rectShadow,
stringFormat);
}
}
objGraphics.DrawString(strText,
font,
objBrush,
rect,
stringFormat);
}
}
}
return bitmapDest;
}
// 2016/10/5 改造为利用下级 Bitmap 函数
// parameters:
// nWidth 控制折行的位置
public static MemoryStream BuildArtText(
string strText,
string strFontFace,
float fFontSize,
FontStyle fontstyle,
Color colorText,
Color colorBack,
Color colorShadow,
ArtEffect effect,
ImageFormat imageformat,
int nWidth = 500)
{
// 正式的图像
using (Bitmap bitmapDest = BuildArtText(strText,
strFontFace,
fFontSize,
fontstyle,
colorText,
colorBack,
colorShadow,
effect,
nWidth))
{
MemoryStream stream = new MemoryStream();
if (imageformat == ImageFormat.Png
&& colorBack == Color.Transparent)
{
bitmapDest.MakeTransparent(colorBack);
}
if (imageformat == ImageFormat.Gif)
{
bitmapDest.MakeTransparent(
colorBack);
OctreeQuantizer quantizer = new OctreeQuantizer(255, 8);
quantizer.TransparentColor = colorBack;
using (Bitmap quantized = quantizer.Quantize(bitmapDest))
{
quantized.Save(stream, imageformat);
}
}
else
{
bitmapDest.Save(stream, imageformat); // System.Drawing.Imaging.ImageFormat.Jpeg
}
return stream;
}
}
