private static IntPtr BeginDraw(Bitmap bmp, Graphics graphics, int x1, int y1, int x2, int y2, bool dash, out int oldRop, out IntPtr img, out IntPtr oldpen)
{
var gHdc = graphics.GetHdc();
var hdc = CreateCompatibleDC(gHdc);
graphics.ReleaseHdc(hdc);
img = bmp.GetHbitmap();
SelectObject(hdc, img);
oldpen = IntPtr.Zero;
if (dash)
{
var pen = CreatePen(PenStyle.PS_DOT, 1, 0);
oldpen = SelectObject(hdc, pen);
}
oldRop = SetROP2(hdc, (int)BinaryRasterOperations.R2_NOTXORPEN); // Switch to inverted mode. (XOR)
SetGraphicsMode(hdc, (int)GraphicsMode.GM_ADVANCED);
XFORM transform = graphics.Transform;
SetWorldTransform(hdc, ref transform);
return(hdc);
}
void Pack(BufferChunk chunk, XFORM aTrans)
{
//chunk += aTrans.eDx;
//chunk += aTrans.eDy;
//chunk += aTrans.eM11;
//chunk += aTrans.eM12;
//chunk += aTrans.eM21;
//chunk += aTrans.eM22;
}
public static void Pack(BufferChunk chunk, XFORM aTrans)
{
chunk += aTrans.eDx;
chunk += aTrans.eDy;
chunk += aTrans.eM11;
chunk += aTrans.eM12;
chunk += aTrans.eM21;
chunk += aTrans.eM22;
}
//public XFORM WorldTransform
//{
// get { return GetWorldTransform(); }
// set { SetWorldTransform(value); }
//}
//private XFORM GetWorldTransform()
//{
// XFORM aTransform = new XFORM();
// bool result = GDI32.GetWorldTransform(DeviceContext, out aTransform);
// return aTransform;
//}
public override void SetWorldTransform(XFORM aTransform)
{
BufferChunk chunk = new BufferChunk(1024);
chunk += GDI32.EMR_SETWORLDTRANSFORM;
Pack(chunk, aTransform);
PackCommand(chunk);
}
/// <summary>
///
/// </summary>
/// <param name="g"></param>
/// <param name="useTransfrom"></param>
public RadHdcWrapper(Graphics g, bool useTransfrom)
{
this.graphics = g;
Region rg = g.Clip;
this.clipRegion = rg.GetHrgn(g);
rg.Dispose();
this.useTransform = useTransfrom;
if (this.useTransform)
{
Matrix m = g.Transform;
transform = XFORM.FromMatrix(m);
}
}
public unsafe static extern RegionHandle ExtCreateRegion(
[In] ref XFORM lpXform,
uint nCount,
RGNDATA *lpRgnData);
public static extern bool SetWorldTransform(
DeviceContext hdc,
[In] ref XFORM lpXform);
public static extern IntPtr ExtCreateRegion(ref XFORM lpXform, int nCount, IntPtr lpRgnData);
public static extern bool SetWorldTransform(IntPtr DC, ref XFORM p2);
public static void DrawString(Graphics g, string text, Font font, Color color, Rectangle rect, Alignment alignment, VAlignment valignment, TextSplitting textSplitting, Ampersands ampersands)
{
if (g == null)
{
throw new ArgumentNullException("g");
}
if (text == null)
{
throw new ArgumentNullException("text");
}
if (font == null)
{
throw new ArgumentNullException("font");
}
if (ampersands == Ampersands.Display)
{
text = text.Replace("&", "&&");
}
float[] txValues = g.Transform.Elements;
IntPtr hClipRgn = g.Clip.GetHrgn(g);
IntPtr hDC = g.GetHdc();
Gdi.SelectClipRgn(hDC, hClipRgn);
int oldGraphicsMode = Gdi.SetGraphicsMode(hDC, 2);
XFORM oldXForm = new XFORM();
Gdi.GetWorldTransform(hDC, ref oldXForm);
XFORM newXForm = new XFORM();
newXForm.eM11 = txValues[0];
newXForm.eM12 = txValues[1];
newXForm.eM21 = txValues[2];
newXForm.eM22 = txValues[3];
newXForm.eDx = txValues[4];
newXForm.eDy = txValues[5];
Gdi.SetWorldTransform(hDC, ref newXForm);
try
{
IntPtr hFont = font.ToHfont();
IntPtr hOldFont = Gdi.SelectObject(hDC, hFont);
try
{
RECT r = new RECT(rect);
User.DrawTextFlags uFormat;
switch (textSplitting)
{
case TextSplitting.SingleLineEllipsis:
uFormat
= User.DrawTextFlags.DT_WORD_ELLIPSIS
| User.DrawTextFlags.DT_END_ELLIPSIS;
break;
case TextSplitting.MultiLine:
uFormat
= User.DrawTextFlags.DT_WORDBREAK;
break;
default:
throw new InvalidOperationException();
}
switch (alignment)
{
case Alignment.Left:
break;
case Alignment.Center:
uFormat
= User.DrawTextFlags.DT_CENTER;
break;
case Alignment.Right:
uFormat
= User.DrawTextFlags.DT_RIGHT;
break;
default:
throw new InvalidOperationException();
}
switch (valignment)
{
case VAlignment.Top:
break;
case VAlignment.Bottom:
uFormat |= User.DrawTextFlags.DT_BOTTOM | User.DrawTextFlags.DT_SINGLELINE;
break;
case VAlignment.Center:
uFormat |= User.DrawTextFlags.DT_VCENTER | User.DrawTextFlags.DT_SINGLELINE;
break;
}
uint bgr = (uint)((color.B << 16) | (color.G << 8) | (color.R));
uint oldColor = Gdi.SetTextColor(hDC, bgr);
try
{
BackgroundMode oldBackgroundMode = Gdi.SetBkMode(hDC, BackgroundMode.TRANSPARENT);
try
{
User.DrawText(hDC, text, text.Length, ref r, uFormat);
}
finally
{
Gdi.SetBkMode(hDC, oldBackgroundMode);
}
}
finally
{
Gdi.SetTextColor(hDC, oldColor);
}
}
finally
{
Gdi.SelectObject(hDC, hOldFont);
Gdi.DeleteObject(hFont);
}
}
finally
{
if (oldGraphicsMode == 1)
{
oldXForm.eM11 = 1;
oldXForm.eM12 = 0;
oldXForm.eM21 = 0;
oldXForm.eM22 = 1;
oldXForm.eDx = 0;
oldXForm.eDx = 0;
}
Gdi.SetWorldTransform(hDC, ref oldXForm);
Gdi.SetGraphicsMode(hDC, oldGraphicsMode);
g.ReleaseHdc(hDC);
if (hClipRgn != IntPtr.Zero)
{
g.Clip.ReleaseHrgn(hClipRgn);
}
}
}
public static extern bool SetWorldTransform(HDC hdc, ref XFORM xf);
public static extern int SetWorldTransform(IntPtr tmp_hDC, ref XFORM lpXform);
public static extern int ModifyWorldTransform(IntPtr tmp_hDC, ref XFORM lpXform, uint iMode);
public static extern bool GetWorldTransform(Win32DCSafeHandle hdc, [In][Out] ref XFORM lpXform);
public static extern bool GetWorldTransform(IntPtr hdc, [In][Out] ref XFORM lpXform);
public static extern bool GetWorldTransform(IntPtr hdc, [Out] out XFORM lpXform);
public static extern bool GetWorldTransform(HDC hdc, out XFORM xf);
public static extern bool ModifyWorldTransform(HDC hdc, ref XFORM xf, uint nMode);
private static extern int SetWorldTransform(IntPtr hdc, ref XFORM xForm);
public static extern int SetWorldTransform(HandleRef hdc, XFORM xform);
[DllImport("gdi32.dll")] public static extern bool SetWorldTransform(HDC hdc, ref XFORM lpXform);
private static extern int ModifyWorldTransform(IntPtr hdc, ref XFORM xForm, int mode);
public static extern int SetWorldTransform(HandleRef hdc, XFORM xform);
public static extern bool CombineTransform(
out XFORM lpxformResult,
[In] ref XFORM lpxform1,
[In] ref XFORM lpxform2);
public static extern bool GetWorldTransform(
DeviceContext hdc,
out XFORM lpXform);
static extern bool SetWorldTransform(IntPtr hdc, [In] ref XFORM lpXform);
public static extern bool ModifyWorldTransform(
DeviceContext hdc,
[In] ref XFORM lpXform,
WorldTransformMode iMode);
public static extern bool ModifyWorldTransform(IntPtr hdc, [In] ref XFORM lpXform, uint iMode);
internal static extern bool SetWorldTransform(Win32DCSafeHandle hdc, [In] ref XFORM lpXform);
