305 lines
9.9 KiB
C#
305 lines
9.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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namespace TextDesignerCSLibrary
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{
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public class TextGradOutlineStrategy : ITextStrategy
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{
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public TextGradOutlineStrategy()
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{
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m_nThickness=2;
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m_brushText = null;
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m_bClrText = true;
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disposed = false;
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}
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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protected virtual void Dispose(bool disposing)
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{
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if (!this.disposed)
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{
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if (disposing)
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{
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}
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disposed = true;
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}
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}
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~TextGradOutlineStrategy()
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{
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Dispose(false);
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}
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public ITextStrategy Clone()
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{
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TextGradOutlineStrategy p = new TextGradOutlineStrategy();
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if (m_bClrText)
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p.Init(m_clrText, m_clrOutline1, m_clrOutline2, m_nThickness);
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else
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p.Init(m_brushText, m_clrOutline1, m_clrOutline2, m_nThickness);
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return (ITextStrategy)(p);
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}
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public void Init(
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System.Drawing.Color clrText,
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System.Drawing.Color clrOutline1,
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System.Drawing.Color clrOutline2,
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int nThickness )
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{
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m_clrText = clrText;
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m_bClrText = true;
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m_clrOutline1 = clrOutline1;
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m_clrOutline2 = clrOutline2;
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m_nThickness = nThickness;
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}
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public void Init(
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System.Drawing.Brush brushText,
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System.Drawing.Color clrOutline1,
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System.Drawing.Color clrOutline2,
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int nThickness)
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{
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m_brushText = brushText;
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m_bClrText = false;
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m_clrOutline1 = clrOutline1;
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m_clrOutline2 = clrOutline2;
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m_nThickness = nThickness;
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}
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public bool DrawString(
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System.Drawing.Graphics graphics,
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System.Drawing.FontFamily fontFamily,
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System.Drawing.FontStyle fontStyle,
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int fontSize,
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string strText,
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System.Drawing.Point ptDraw,
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System.Drawing.StringFormat strFormat)
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{
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using (GraphicsPath path = new GraphicsPath())
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{
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path.AddString(strText, fontFamily, (int)fontStyle, fontSize, ptDraw, strFormat);
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List<Color> list = new List<Color>();
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CalculateGradient(
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m_clrOutline1,
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m_clrOutline2,
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m_nThickness,
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list);
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for (int i = m_nThickness; i >= 1; --i)
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{
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using (Pen pen1 = new Pen(list[i - 1], i))
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{
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pen1.LineJoin = LineJoin.Round;
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graphics.DrawPath(pen1, path);
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}
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}
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if (m_bClrText)
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{
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using (SolidBrush brush = new SolidBrush(m_clrText))
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{
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graphics.FillPath(brush, path);
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}
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}
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else
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graphics.FillPath(m_brushText, path);
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}
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return true;
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}
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public bool DrawString(
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System.Drawing.Graphics graphics,
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System.Drawing.FontFamily fontFamily,
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System.Drawing.FontStyle fontStyle,
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int fontSize,
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string strText,
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System.Drawing.Rectangle rtDraw,
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System.Drawing.StringFormat strFormat)
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{
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using (GraphicsPath path = new GraphicsPath())
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{
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path.AddString(strText, fontFamily, (int)fontStyle, fontSize, rtDraw, strFormat);
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List<Color> list = new List<Color>();
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CalculateGradient(
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m_clrOutline1,
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m_clrOutline2,
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m_nThickness,
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list);
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for (int i = m_nThickness; i >= 1; --i)
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{
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using (Pen pen1 = new Pen(list[i - 1], i))
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{
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pen1.LineJoin = LineJoin.Round;
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graphics.DrawPath(pen1, path);
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}
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}
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if (m_bClrText)
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{
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using (SolidBrush brush = new SolidBrush(m_clrText))
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{
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graphics.FillPath(brush, path);
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}
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}
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else
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graphics.FillPath(m_brushText, path);
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}
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return true;
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}
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public bool MeasureString(
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System.Drawing.Graphics graphics,
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System.Drawing.FontFamily fontFamily,
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System.Drawing.FontStyle fontStyle,
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int fontSize,
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string strText,
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System.Drawing.Point ptDraw,
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System.Drawing.StringFormat strFormat,
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ref float fStartX,
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ref float fStartY,
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ref float fDestWidth,
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ref float fDestHeight)
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{
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using (GraphicsPath path = new GraphicsPath())
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{
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path.AddString(strText, fontFamily, (int)fontStyle, fontSize, ptDraw, strFormat);
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fDestWidth = ptDraw.X;
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fDestHeight = ptDraw.Y;
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bool b = GDIPath.MeasureGraphicsPath(graphics, path, ref fStartX, ref fStartY, ref fDestWidth, ref fDestHeight);
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if (false == b)
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return false;
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float pixelThick = 0.0f;
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float pixelThick2 = 0.0f;
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float fStartX2 = 0.0f;
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float fStartY2 = 0.0f;
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b = GDIPath.ConvertToPixels(graphics, m_nThickness, 0.0f, ref fStartX2, ref fStartY2, ref pixelThick, ref pixelThick2);
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if (false == b)
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return false;
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fDestWidth += pixelThick;
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fDestHeight += pixelThick;
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}
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return true;
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}
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public bool MeasureString(
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System.Drawing.Graphics graphics,
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System.Drawing.FontFamily fontFamily,
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System.Drawing.FontStyle fontStyle,
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int fontSize,
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string strText,
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System.Drawing.Rectangle rtDraw,
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System.Drawing.StringFormat strFormat,
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ref float fStartX,
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ref float fStartY,
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ref float fDestWidth,
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ref float fDestHeight)
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{
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using (GraphicsPath path = new GraphicsPath())
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{
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path.AddString(strText, fontFamily, (int)fontStyle, fontSize, rtDraw, strFormat);
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fDestWidth = rtDraw.Width;
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fDestHeight = rtDraw.Height;
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bool b = GDIPath.MeasureGraphicsPath(graphics, path, ref fStartX, ref fStartY, ref fDestWidth, ref fDestHeight);
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if (false == b)
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return false;
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float pixelThick = 0.0f;
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float pixelThick2 = 0.0f;
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float fStartX2 = 0.0f;
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float fStartY2 = 0.0f;
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b = GDIPath.ConvertToPixels(graphics, m_nThickness, 0.0f, ref fStartX2, ref fStartY2, ref pixelThick, ref pixelThick2);
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if (false == b)
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return false;
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fDestWidth += pixelThick;
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fDestHeight += pixelThick;
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}
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return true;
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}
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void CalculateGradient(
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Color clr1,
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Color clr2,
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int nThickness,
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List<Color> list)
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{
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list.Clear();
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int nWidth = nThickness;
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int nHeight = 1;
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Rectangle rect = new Rectangle(0, 0, nWidth, nHeight);
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LinearGradientBrush brush = new LinearGradientBrush(rect,
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clr1, clr2, LinearGradientMode.Horizontal);
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using (Bitmap pImage = new Bitmap(nWidth, nHeight, PixelFormat.Format32bppArgb))
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{
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using (Graphics graphics = System.Drawing.Graphics.FromImage(pImage))
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{
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graphics.FillRectangle(brush, 0, 0, pImage.Width, pImage.Height);
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BitmapData bitmapData = new BitmapData();
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pImage.LockBits(
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rect,
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ImageLockMode.ReadOnly,
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PixelFormat.Format32bppArgb,
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bitmapData);
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unsafe
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{
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uint* pixels = (uint*)bitmapData.Scan0;
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if (pixels == null)
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{
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pImage.UnlockBits(bitmapData);
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return;
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}
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uint col = 0;
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int stride = bitmapData.Stride >> 2;
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for (uint row = 0; row < bitmapData.Height; ++row)
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{
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for (col = 0; col < bitmapData.Width; ++col)
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{
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uint index = (uint)(row * stride + col);
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uint color = pixels[index];
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Color gdiColor = Color.FromArgb((int)((color & 0xff0000) >> 16), (int)((color & 0xff00) >> 8), (int)(color & 0xff));
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list.Add(gdiColor);
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}
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}
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}
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pImage.UnlockBits(bitmapData);
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}
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}
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}
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protected System.Drawing.Color m_clrText;
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protected System.Drawing.Color m_clrOutline1;
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protected System.Drawing.Color m_clrOutline2;
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protected int m_nThickness;
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protected System.Drawing.Brush m_brushText;
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protected bool m_bClrText;
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protected bool disposed;
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}
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}
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