/***************************************************************************
* CopyRight (C) 2009 by Cristinel Mazarine *
* Author: Cristinel Mazarine *
* Contact: cristinel@osec.ro *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the Crom Free License as published by *
* the SC Crom-Osec SRL; version 1 of the License *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Crom Free License for more details. *
* *
* You should have received a copy of the Crom Free License along with *
* this program; if not, write to the contact@osec.ro *
***************************************************************************/
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Runtime.InteropServices;
namespace Crom.Controls
{
/// <summary>
/// Graphics utility
/// </summary>
public sealed class GraphicsUtility
{
#region Instance
/// <summary>
/// Default constructor
/// </summary>
private GraphicsUtility()
{
}
#endregion Instance
#region Public section
/// <summary>
/// Create round rect paht
/// </summary>
/// <param name="x">x</param>
/// <param name="y">y</param>
/// <param name="width">width</param>
/// <param name="height">height</param>
/// <returns>round rect path</returns>
public static GraphicsPath CreateRoundRectPath(int x, int y, int width, int height, int round)
{
return CreateRoundRectPath(x, y, width, height, round, round, round, round);
}
/// <summary>
/// Create round rect
/// </summary>
/// <param name="x">x</param>
/// <param name="y">y</param>
/// <param name="width">width</param>
/// <param name="height">height</param>
/// <param name="roundLeftTop">round left top</param>
/// <param name="roundRightTop">round right top</param>
/// <param name="roundLeftBottom">round left bottom</param>
/// <param name="roundRightBottom">round right bottom</param>
/// <returns>round rect path</returns>
public static GraphicsPath CreateRoundRectPath(int x, int y, int width, int height,
int roundLeftTop, int roundRightTop, int roundLeftBottom, int roundRightBottom)
{
GraphicsPath roundRectPath = new GraphicsPath();
Point[] lines = new Point[]
{
new Point(x, y + roundLeftTop),
new Point(x + roundLeftTop, y),
new Point(x + width - roundRightTop, y),
new Point(x + width, y + roundRightTop),
new Point(x + width, y + height - roundRightBottom),
new Point(x + width - roundRightBottom, y + height),
new Point(x + roundLeftBottom, y + height),
new Point(x, y + height - roundLeftBottom)
};
roundRectPath.AddLines(lines);
roundRectPath.CloseFigure();
return roundRectPath;
}
/// <summary>
/// Draws a round rect
/// </summary>
/// <param name="bounds">bound of the round rect</param>
/// <param name="roundX">round on x</param>
/// <param name="roundY">round on y</param>
/// <param name="pen">pen object</param>
/// <param name="graphics">graphics object</param>
public static void DrawRoundRect(Rectangle bounds, int roundX, int roundY, Pen pen, Graphics graphics)
{
IntPtr hdc = graphics.GetHdc();
try
{
int argb = ColorToRGB(pen.Color);
IntPtr hPen = CreatePen(GetPenStyle(pen.DashStyle), (int)pen.Width, argb);
LogBrush brushData = new LogBrush();
brushData.lbColor = ColorToRGB(Color.Transparent);
brushData.lbStyle = W32BrushStyle.Null;
IntPtr hBrush = CreateBrushIndirect(ref brushData);
IntPtr oldPen = SelectObject(hdc, hPen);
IntPtr oldBrush = SelectObject(hdc, hBrush);
RoundRect(hdc, bounds.X, bounds.Y, bounds.Right, bounds.Bottom, roundX, roundY);
DeleteObject(SelectObject(hdc, oldPen));
DeleteObject(SelectObject(hdc, oldBrush));
}
finally
{
graphics.ReleaseHdc(hdc);
}
}
/// <summary>
/// Fills a round rect
/// </summary>
/// <param name="bounds">bound of the round rect</param>
/// <param name="roundX">round on x</param>
/// <param name="roundY">round on y</param>
/// <param name="backColor">backColor</param>
/// <param name="graphics">graphics object</param>
public static void FillRoundRect(Rectangle bounds, int roundX, int roundY, Color backColor, Graphics graphics)
{
IntPtr hdc = graphics.GetHdc();
try
{
int argb = ColorToRGB(backColor);
IntPtr hPen = CreatePen(W32PenStyle.Null, 1, 0);
LogBrush brushData = new LogBrush();
brushData.lbColor = argb;
brushData.lbStyle = W32BrushStyle.Solid;
IntPtr hBrush = CreateBrushIndirect(ref brushData);
IntPtr oldPen = SelectObject(hdc, hPen);
IntPtr oldBrush = SelectObject(hdc, hBrush);
RoundRect(hdc, bounds.X, bounds.Y, bounds.Right, bounds.Bottom, roundX, roundY);
DeleteObject(SelectObject(hdc, oldPen));
DeleteObject(SelectObject(hdc, oldBrush));
}
finally
{
graphics.ReleaseHdc(hdc);
}
}
#endregion Public section
#region Private section
private static int ColorToRGB(Color color)
{
return (color.B << 16) + (color.G << 8) + color.R;
}
[DllImport("Gdi32")]
private static extern bool RoundRect(
IntPtr hdc, // handle to DC
int nLeftRect, // x-coord of upper-left corner of rectangle
int nTopRect, // y-coord of upper-left corner of rectangle
int nRightRect, // x-coord of lower-right corner of rectangle
int nBottomRect, // y-coord of lower-right corner of rectangle
int nWidth, // width of ellipse
int nHeight // height of ellipse
);
[DllImport("Gdi32")]
private static extern IntPtr SelectObject(
IntPtr hdc, // handle to DC
IntPtr hgdiobj // handle to object
);
[DllImport("Gdi32")]
private static extern bool DeleteObject(
IntPtr hgdiobj // handle to object
);
private enum W32PenStyle : int
{
Solid = 0,
Dash = 1,
Dot = 2,
DashDot = 3,
DashDotDot = 4,
Null = 5,
InsideFrame = 6,
UserStyle = 7,
Alternate = 8,
StyleMask = 0x0000000F,
EndCapSquare = 0x00000100,
EndCapFlat = 0x00000200,
EndCapMask = 0x00000F00,
JoinBevel = 0x00001000,
JoinMiter = 0x00002000,
JoinMask = 0x0000F000,
Geometric = 0x00010000,
TypeMask = 0x000F0000,
};
[DllImport("Gdi32")]
private static extern IntPtr CreatePen(
W32PenStyle fnPenStyle, // pen style
int nWidth, // pen width
int crColor // pen color
);
private static W32PenStyle GetPenStyle(DashStyle dashStyle)
{
switch (dashStyle)
{
case DashStyle.Custom:
return W32PenStyle.UserStyle;
case DashStyle.Dash:
return W32PenStyle.Dash;
case DashStyle.DashDot:
return W32PenStyle.DashDot;
case DashStyle.DashDotDot:
return W32PenStyle.DashDotDot;
case DashStyle.Dot:
return W32PenStyle.Dot;
case DashStyle.Solid:
return W32PenStyle.Solid;
}
return W32PenStyle.Solid;
}
private enum W32BrushStyle : int
{
Solid = 0,
Null = 1,
Hatched = 2,
Pattern = 3,
Indexed = 4,
DIBPattern = 5,
DIBPatternPt = 6,
Pattern8X8 = 7,
DIBPattern8X8 = 8,
MonOPattern = 9,
};
[StructLayout(LayoutKind.Sequential)]
struct LogBrush
{
public W32BrushStyle lbStyle;
public int lbColor;
public int lbHatch;
};
[DllImport("Gdi32")]
private static extern IntPtr CreateBrushIndirect(
ref LogBrush lplb // brush information
);
#endregion Private section
}
}
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