public Size MeasureText(System.Drawing.Graphics g, string text)
{
Drawing.Size size = TextRenderer.MeasureText(g, text,
font, new System.Drawing.Size(256, 256), flags);
return(new Size(size.Width, size.Height));
}
public GDICanvasState(GDICanvasState prototype) : base(prototype)
{
_graphics = prototype._graphics;
_strokeWidth = prototype._strokeWidth;
_scale = prototype._scale;
StrokeColor = prototype.StrokeColor;
StrokeDashPattern = prototype.StrokeDashPattern;
StrokeLineJoin = prototype.StrokeLineJoin;
StrokeLineCap = prototype.StrokeLineCap;
StrokeMiterLimit = prototype.StrokeMiterLimit;
FillColor = prototype.FillColor;
TextColor = prototype.TextColor;
_fontName = prototype._fontName;
_fontStyle = prototype._fontStyle;
_fontSize = prototype._fontSize;
/*strokeBrush = prototype.strokeBrush;
* fillBrush = prototype.fillBrush;
* fontBrush = prototype.fontBrush;
* shadowColor = prototype.shadowColor;
*
* sourceStrokeColor = prototype.sourceStrokeColor;
* sourceFillpaint = prototype.sourceFillpaint;
* sourceFillColor = prototype.sourceFillColor;
* sourceFontColor = prototype.sourceFontColor;
* sourceShadowColor = prototype.sourceShadowColor;
*
* strokeBrushValid = prototype.strokeBrushValid;
* fillBrushValid = prototype.fillBrushValid;
* fontBrushValid = prototype.fontBrushValid;
* shadowColorValid = prototype.shadowColorValid;
*
* strokeStyle = prototype.strokeStyle;
* strokeStyleProperties = prototype.strokeStyleProperties;
* needsStrokeStyle = prototype.needsStrokeStyle;
*
* IsShadowed = prototype.IsShadowed;
* ShadowOffset = prototype.ShadowOffset;
* ShadowBlur = prototype.ShadowBlur;
*
* ActualScale = prototype.ActualScale;
* Matrix = prototype.Matrix;
*
* FontName = prototype.FontName;
* FontSize = prototype.FontSize;
* FontWeight = prototype.FontWeight;
* FontStyle = prototype.FontStyle;
*
* alpha = prototype.alpha;
*
* IsBlurred = prototype.IsBlurred;
* BlurRadius = prototype.BlurRadius;*/
}
protected Drawing.Bitmap CombineBitmap(Drawing.Bitmap bmp1, Drawing.Bitmap bmp2)
{
int
w = bmp1.Width + bmp2.Width,
h = Math.Max(bmp1.Height, bmp2.Height);
var result = new Drawing.Bitmap(w, h);
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(result))
{
int
l = 0,
t = (h - bmp1.Height) / 2;
g.DrawImage(bmp1, l, t, bmp1.Width, bmp1.Height);
l = bmp1.Width;
t = (h - bmp2.Height) / 2;
g.DrawImage(bmp2, l, t + 4, bmp2.Width, bmp2.Height);
}
return(result);
}
public static Bitmap Rotate(Bitmap b, int angle)
{
angle = angle % 360;
//弧度转换
double radian = angle * Math.PI / 180.0;
double cos = Math.Cos(radian);
double sin = Math.Sin(radian);
//原图的宽和高
int w = b.Width;
int h = b.Height;
int W = (int)(Math.Max(Math.Abs(w * cos - h * sin), Math.Abs(w * cos + h * sin)));
int H = (int)(Math.Max(Math.Abs(w * sin - h * cos), Math.Abs(w * sin + h * cos)));
//目标位图
Bitmap dsImage = new Bitmap(W, H);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(dsImage);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Bilinear;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
//计算偏移量
Point Offset = new Point((W - w) / 2, (H - h) / 2);
//构造图像显示区域：让图像的中心与窗口的中心点一致
Rectangle rect = new Rectangle(Offset.X, Offset.Y, w, h);
Point center = new Point(rect.X + rect.Width / 2, rect.Y + rect.Height / 2);
g.TranslateTransform(center.X, center.Y);
g.RotateTransform(360 - angle);
//恢复图像在水平和垂直方向的平移
g.TranslateTransform(-center.X, -center.Y);
g.DrawImage(b, rect);
//重至绘图的所有变换
g.ResetTransform();
g.Save();
g.Dispose();
//dsImage.Save("yuancd.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
return(dsImage);
}
public void DrawText(System.Drawing.Graphics g, string text, Point location, Drawing.Color clr)
{
TextRenderer.DrawText(g, text, font,
new System.Drawing.Rectangle(location.X, location.Y, 256, 256),
clr, flags);
}
public GDICanvasState(System.Drawing.Graphics graphics)
{
_graphics = graphics;
SetToDefaults();
}
