public int Restore(InternalGraphicsState state)
{
if (!_stack.Contains(state))
{
throw new ArgumentException("State not on stack.", "state");
}
if (state.Invalid)
{
throw new ArgumentException("State already restored.", "state");
}
int count = 1;
InternalGraphicsState top = _stack.Pop();
top.Popped();
while (top != state)
{
count++;
state.Invalid = true;
top = _stack.Pop();
top.Popped();
}
state.Invalid = true;
return(count);
}
public int Restore(InternalGraphicsState state)
{
if (!this.stack.Contains(state))
throw new ArgumentException("State not on stack.", "state");
if (state.invalid)
throw new ArgumentException("State already restored.", "state");
int count = 1;
InternalGraphicsState top = (InternalGraphicsState)this.stack.Pop();
while (top != state)
{
count++;
state.invalid = true;
top = (InternalGraphicsState)this.stack.Pop();
}
state.invalid = true;
return count;
}
/// <summary>
/// Saves a graphics container with the current state of this XGraphics and
/// opens and uses a new graphics container.
/// </summary>
public XGraphicsContainer BeginContainer(XRect dstrect, XRect srcrect, XGraphicsUnit unit)
{
// TODO: unit
if (unit != XGraphicsUnit.Point)
throw new ArgumentException("The current implementation supports XGraphicsUnit.Point only.", "unit");
XGraphicsContainer xContainer = null;
#if GDI
if (this.targetContext == XGraphicTargetContext.GDI)
xContainer = new XGraphicsContainer(this.gfx.Save());
#endif
#if WPF
if (this.targetContext == XGraphicTargetContext.WPF)
xContainer = new XGraphicsContainer();
#endif
InternalGraphicsState iState = new InternalGraphicsState(this, xContainer);
iState.Transform = this.transform;
this.gsStack.Push(iState);
if (this.renderer != null)
this.renderer.BeginContainer(xContainer, dstrect, srcrect, unit);
XMatrix matrix = new XMatrix(); //XMatrix.Identity;
#if true
double scaleX = dstrect.Width / srcrect.Width;
double scaleY = dstrect.Height / srcrect.Height;
matrix.TranslatePrepend(-srcrect.X, -srcrect.Y);
matrix.ScalePrepend(scaleX, scaleY);
matrix.TranslatePrepend(dstrect.X / scaleX, dstrect.Y / scaleY);
#else
matrix.Translate(-dstrect.X, -dstrect.Y);
matrix.Scale(dstrect.Width / srcrect.Width, dstrect.Height / srcrect.Height);
matrix.Translate(srcrect.X, srcrect.Y);
#endif
AddTransform(matrix, XMatrixOrder.Prepend);
return xContainer;
}
// ----- DrawGrit -----------------------------------------------------------------------------
//[Conditional("DEBUG")]
//public void DrawGridlines(XPoint origin, XPen majorpen, double majordelta, XPen minorpen, double minordelta)
//{
// RectangleF box = new RectangleF(0, 0, 600, 850);
// DrawGridline(origin, minorpen, minordelta, box);
// DrawGridline(origin, majorpen, majordelta, box);
// /*
// float xmin = -10000f, ymin = -10000f, xmax = 10000f, ymax = 10000f;
// float x, y;
// x = origin.X;
// while (x < xmax)
// {
// DrawLine(majorpen, x, ymin, x, ymax);
// x += majordelta;
// }
// x = origin.X - majordelta;
// while (x > xmin)
// {
// DrawLine(majorpen, x, ymin, x, ymax);
// x -= majordelta;
// }
// y = origin.Y;
// while (y < ymax)
// {
// DrawLine(majorpen, xmin, y, xmax, y);
// y += majordelta;
// }
// y = origin.Y - majordelta;
// while (y > ymin)
// {
// DrawLine(majorpen, xmin, y, xmax, y);
// y -= majordelta;
// }
// */
//}
//[Conditional("DEBUG")]
//void DrawGridline(XPoint origin, XPen pen, double delta, XRect box)
//{
// double xmin = box.X, ymin = box.Y, xmax = box.X + box.Width, ymax = box.Y + box.Height;
// double x, y;
// y = origin.Y;
// while (y < ymax)
// {
// DrawLine(pen, xmin, y, xmax, y);
// y += delta;
// }
// y = origin.Y - delta;
// while (y > ymin)
// {
// DrawLine(pen, xmin, y, xmax, y);
// y -= delta;
// }
// x = origin.X;
// while (x < xmax)
// {
// DrawLine(pen, x, ymin, x, ymax);
// x += delta;
// }
// x = origin.X - delta;
// while (x > xmin)
// {
// DrawLine(pen, x, ymin, x, ymax);
// x -= delta;
// }
//}
#endregion
// --------------------------------------------------------------------------------------------
#region Save and Restore
/// <summary>
/// Saves the current state of this XGraphics object and identifies the saved state with the
/// returned XGraphicsState object.
/// </summary>
public XGraphicsState Save()
{
XGraphicsState xState = null;
#if GDI
if (this.targetContext == XGraphicTargetContext.GDI)
{
xState = new XGraphicsState(this.gfx.Save());
InternalGraphicsState iState = new InternalGraphicsState(this, xState);
iState.Transform = this.transform;
this.gsStack.Push(iState);
}
#endif
#if WPF
if (this.targetContext == XGraphicTargetContext.WPF)
{
xState = new XGraphicsState();
InternalGraphicsState iState = new InternalGraphicsState(this, xState);
iState.Transform = this.transform;
this.gsStack.Push(iState);
}
#endif
if (this.renderer != null)
this.renderer.Save(xState);
return xState;
}
public void Push(InternalGraphicsState state)
{
this.stack.Push(state);
}
public void Push(InternalGraphicsState state)
{
_stack.Push(state);
state.Pushed();
}
public GraphicsStateStack(XGraphics gfx)
{
_current = new InternalGraphicsState(gfx);
}
/// <summary>
/// Saves a graphics container with the current state of this XGraphics and
/// opens and uses a new graphics container.
/// </summary>
public XGraphicsContainer BeginContainer(XRect dstrect, XRect srcrect, XGraphicsUnit unit)
{
// TODO: unit
if (unit != XGraphicsUnit.Point)
throw new ArgumentException("The current implementation supports XGraphicsUnit.Point only.", "unit");
#if true
XGraphicsContainer xContainer = new XGraphicsContainer(this.gfx.Save());
InternalGraphicsState iState = new InternalGraphicsState(xContainer);
iState.Transform = this.transform;
this.gsStack.Push(iState);
if (this.renderer != null)
this.renderer.BeginContainer(xContainer, dstrect, srcrect, unit);
XMatrix matrix = XMatrix.Identity;
#if true
double scaleX = dstrect.Width / srcrect.Width;
double scaleY = dstrect.Height / srcrect.Height;
matrix.Translate(-srcrect.X, -srcrect.Y);
matrix.Scale(scaleX, scaleY);
matrix.Translate(dstrect.X / scaleX, dstrect.Y / scaleY);
#else
matrix.Translate(-dstrect.X, -dstrect.Y);
matrix.Scale(dstrect.Width / srcrect.Width, dstrect.Height / srcrect.Height);
matrix.Translate(srcrect.X, srcrect.Y);
#endif
Transform = matrix;
return xContainer;
#else
XGraphicsContainer container = new XGraphicsContainer(this.gfx.BeginContainer(dstrect, srcrect, this.gfx.PageUnit));
container.Transform = this.transform;
if (this.renderer != null)
this.renderer.BeginContainer(container, dstrect, srcrect, unit);
return container;
#endif
}
// ----- DrawGrit -----------------------------------------------------------------------------
//[Conditional("DEBUG")]
//public void DrawGridlines(XPoint origin, XPen majorpen, double majordelta, XPen minorpen, double minordelta)
//{
// RectangleF box = new RectangleF(0, 0, 600, 850);
// DrawGridline(origin, minorpen, minordelta, box);
// DrawGridline(origin, majorpen, majordelta, box);
// /*
// float xmin = -10000f, ymin = -10000f, xmax = 10000f, ymax = 10000f;
// float x, y;
// x = origin.X;
// while (x < xmax)
// {
// DrawLine(majorpen, x, ymin, x, ymax);
// x += majordelta;
// }
// x = origin.X - majordelta;
// while (x > xmin)
// {
// DrawLine(majorpen, x, ymin, x, ymax);
// x -= majordelta;
// }
// y = origin.Y;
// while (y < ymax)
// {
// DrawLine(majorpen, xmin, y, xmax, y);
// y += majordelta;
// }
// y = origin.Y - majordelta;
// while (y > ymin)
// {
// DrawLine(majorpen, xmin, y, xmax, y);
// y -= majordelta;
// }
// */
//}
//[Conditional("DEBUG")]
//void DrawGridline(XPoint origin, XPen pen, double delta, XRect box)
//{
// double xmin = box.X, ymin = box.Y, xmax = box.X + box.Width, ymax = box.Y + box.Height;
// double x, y;
// y = origin.Y;
// while (y < ymax)
// {
// DrawLine(pen, xmin, y, xmax, y);
// y += delta;
// }
// y = origin.Y - delta;
// while (y > ymin)
// {
// DrawLine(pen, xmin, y, xmax, y);
// y -= delta;
// }
// x = origin.X;
// while (x < xmax)
// {
// DrawLine(pen, x, ymin, x, ymax);
// x += delta;
// }
// x = origin.X - delta;
// while (x > xmin)
// {
// DrawLine(pen, x, ymin, x, ymax);
// x -= delta;
// }
//}
#endregion
// --------------------------------------------------------------------------------------------
#region Save and Restore
/// <summary>
/// Saves the current state of this XGraphics object and identifies the saved state with the
/// returned XGraphicsState object.
/// </summary>
public XGraphicsState Save()
{
XGraphicsState xState = new XGraphicsState(this.gfx.Save());
InternalGraphicsState iState = new InternalGraphicsState(xState);
iState.Transform = this.transform;
this.gsStack.Push(iState);
if (this.renderer != null)
this.renderer.Save(xState);
return xState;
}
public void Push(InternalGraphicsState state)
{
_stack.Push(state);
state.Pushed();
}
public GraphicsStateStack(XGraphics gfx)
{
_current = new InternalGraphicsState(gfx);
}
