public static bool SetViewportOrgEx(HandleRef hDC, int x, int y, [In, Out] IntNativeMethods.POINT point)
{
bool retVal = IntSetViewportOrgEx(hDC, x, y, point);
DbgUtil.AssertWin32(retVal, "SetViewportOrgEx([hdc=0x{0:X8}], x=[{1}], y=[{2}], [out point]) failed.", hDC.Handle, x, y);
return(retVal);
}
/// <devdoc>
/// Sets the DC Viewport origin to the specified value and returns its previous value; origin values are in device units.
/// </devdoc>
public Point SetViewportOrigin(Point newOrigin)
{
IntNativeMethods.POINT oldOrigin = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.SetViewportOrgEx(new HandleRef(this, this.Hdc), newOrigin.X, newOrigin.Y, oldOrigin);
return(oldOrigin.ToPoint());
}
public static bool GetViewportOrgEx(HandleRef hdc, [In, Out] IntNativeMethods.POINT lpPoint)
{
bool retVal = IntGetViewportOrgEx(hdc, lpPoint);
DbgUtil.AssertWin32(retVal, "GetViewportOrgEx([hdc=0x{0:X8}], [out point]) failed.", hdc.Handle);
return(retVal);
}
public static bool MoveToEx(HandleRef hdc, int x, int y, IntNativeMethods.POINT pt)
{
bool retVal = IntMoveToEx(hdc, x, y, pt);
DbgUtil.AssertWin32(retVal, "MoveToEx(hdc=[0x{0:X8}], x=[{1}], y=[{2}], pt=[{3}] failed.", hdc.Handle, x, y, pt);
return(retVal);
}
public void DrawLine(WindowsPen pen, int x1, int y1, int x2, int y2)
{
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
DeviceContextBinaryRasterOperationFlags rasterOp = this.dc.BinaryRasterOperation;
DeviceContextBackgroundMode bckMode = this.dc.BackgroundMode;
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
rasterOp = this.dc.SetRasterOperation(DeviceContextBinaryRasterOperationFlags.CopyPen);
}
if (bckMode != DeviceContextBackgroundMode.Transparent)
{
bckMode = this.dc.SetBackgroundMode(DeviceContextBackgroundMode.Transparent);
}
if (pen != null)
{
this.dc.SelectObject(pen.HPen, GdiObjectType.Pen);
}
IntNativeMethods.POINT oldPoint = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.MoveToEx(hdc, x1, y1, oldPoint);
IntUnsafeNativeMethods.LineTo(hdc, x2, y2);
if (bckMode != DeviceContextBackgroundMode.Transparent)
{
this.dc.SetBackgroundMode(bckMode);
}
if (rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen)
{
this.dc.SetRasterOperation(rasterOp);
}
IntUnsafeNativeMethods.MoveToEx(hdc, oldPoint.x, oldPoint.y, null);
}
/// <devdoc>
/// Modifies the viewport origin for a device context using the specified horizontal and vertical offsets in logical units.
/// </devdoc>
public void TranslateTransform(int dx, int dy)
{
IntNativeMethods.POINT orgn = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.OffsetViewportOrgEx(new HandleRef(this, this.Hdc), dx, dy, orgn);
}
public static extern bool IntSetViewportOrgEx(HandleRef hDC, int x, int y, [In, Out] IntNativeMethods.POINT point);
public static extern bool IntGetViewportOrgEx(HandleRef hdc, [In, Out] IntNativeMethods.POINT lpPoint);
public static extern bool IntMoveToEx(HandleRef hdc, int x, int y, IntNativeMethods.POINT pt);
public static bool OffsetViewportOrgEx(HandleRef hDC, int nXOffset, int nYOffset, [In, Out] IntNativeMethods.POINT point)
{
bool retVal = IntOffsetViewportOrgEx(hDC, nXOffset, nYOffset, point);
DbgUtil.AssertWin32(retVal, "OffsetViewportOrgEx([hdc=0x{0:X8}], dx=[{1}], dy=[{2}], [out pPoint]) failed.", hDC.Handle, nXOffset, nYOffset);
return(retVal);
}
public static extern bool IntOffsetViewportOrgEx(HandleRef hDC, int nXOffset, int nYOffset, [In, Out] IntNativeMethods.POINT point);
public void TranslateTransform(int dx, int dy)
{
IntNativeMethods.POINT point = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.OffsetViewportOrgEx(new HandleRef(this, this.Hdc), dx, dy, point);
}
public Point SetViewportOrigin(Point newOrigin)
{
IntNativeMethods.POINT point = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.SetViewportOrgEx(new HandleRef(this, this.Hdc), newOrigin.X, newOrigin.Y, point);
return point.ToPoint();
}
/// <include file='doc\WindowsGraphics.uex' path='docs/doc[@for="WindowsGraphics.DrawLine3"]/*' />
public void DrawLine(WindowsPen pen, int x1, int y1, int x2, int y2)
{
HandleRef hdc = new HandleRef(this.dc, this.dc.Hdc);
DeviceContextBinaryRasterOperationFlags rasterOp = this.dc.BinaryRasterOperation;
DeviceContextBackgroundMode bckMode = this.dc.BackgroundMode;
if( rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen )
{
rasterOp = this.dc.SetRasterOperation( DeviceContextBinaryRasterOperationFlags.CopyPen );
}
if( bckMode != DeviceContextBackgroundMode.Transparent )
{
bckMode = this.dc.SetBackgroundMode( DeviceContextBackgroundMode.Transparent );
}
if (pen != null)
{
this.dc.SelectObject(pen.HPen, GdiObjectType.Pen);
}
IntNativeMethods.POINT oldPoint = new IntNativeMethods.POINT();
IntUnsafeNativeMethods.MoveToEx(hdc, x1, y1, oldPoint);
IntUnsafeNativeMethods.LineTo(hdc, x2, y2);
if( bckMode != DeviceContextBackgroundMode.Transparent )
{
this.dc.SetBackgroundMode( bckMode );
}
if( rasterOp != DeviceContextBinaryRasterOperationFlags.CopyPen )
{
this.dc.SetRasterOperation( rasterOp );
}
IntUnsafeNativeMethods.MoveToEx(hdc, oldPoint.x, oldPoint.y, null);
}
