protected override ILine ProduceChild(IDocumentBuffer documentBuffer, IDimensionConstraint childConstraint)
{
var line = this.elementFactory.CreateLine(this.flags);
line.Insert(documentBuffer, childConstraint);
return(line);
}
/// <summary>
/// Takes the remaining text that fits the flag, until a limit by the maxLength, removing that text from the buffer.
/// </summary>
/// <returns></returns>
public string Take(IDimensionConstraint constraint, IFlags flags)
{
this.ThrowIfBufferIsEmpty();
if (constraint.MaxWidth == null)
{
throw new Exception("A max width must be provided in the constraint.");
}
var first = this.elements.First();
if (first.Flags == null || (flags != null && !first.Flags.Equals(flags)))
{
return(null);
}
var text = this.textScoper.GetFittingText(first.Flags.Font, first.Flags.FontSize, first.Text, (double)constraint.MaxWidth);
if (text == first.Text)
{
this.elements.RemoveAt(0);
}
else if (text != String.Empty)
{
this.elements[0] = new BufferElement()
{
Text = Strings.strsubutf8(first.Text, Strings.strlenutf8(text)),
Flags = first.Flags,
};
}
return(text);
}
protected override IDimensionConstraint GetConstraint(IDimensionConstraint originalConstraint, double widthUsed)
{
return(new DimensionConstraint()
{
MaxHeight = originalConstraint.MaxHeight,
MaxWidth = originalConstraint.MaxWidth - widthUsed,
});
}
protected override IDimensionConstraint GetConstraint(IDimensionConstraint oritiConstraint, double heightUsed)
{
return(new DimensionConstraint()
{
MaxHeight = this.properties.Height - (this.properties.EdgeTop + this.properties.EdgeBottom + heightUsed),
MaxWidth = this.properties.Width - (this.properties.EdgeLeft + this.properties.EdgeRight),
});
}
/// <summary>
/// Insers the content of the document buffer into itself and sub containers.
/// </summary>
/// <param name="documentBuffer">The document buffer.</param>
/// <param name="dimensionConstraint">The constraining dimensions.</param>
public void Insert(IDocumentBuffer documentBuffer, IDimensionConstraint dimensionConstraint)
{
if (dimensionConstraint.MaxWidth == null)
{
throw new Exception("The formatted text object must be given a width constraint on insert.");
}
var textBeforeCursor = Strings.strsubutf8(this.text, 0, this.cursorPos);
var xBeforeCursor = this.textScoper.GetWidth(this.flags.Font, this.flags.FontSize, textBeforeCursor);
var availableDimension = new DimensionConstraint()
{
MaxWidth = (double)dimensionConstraint.MaxWidth - xBeforeCursor,
MaxHeight = dimensionConstraint.MaxHeight,
};
var addedText = documentBuffer.Take(availableDimension, this.GetCurrentFlags());
if (addedText == String.Empty)
{
return;
}
var addedTextSize = Strings.strlenutf8(addedText);
if (this.cursorPos < this.GetLength()) // The cursor is not and the end. The inserted text is thus put in at the cursor position
{
var textAfterCursor = Strings.strsubutf8(this.text, this.cursorPos);
this.text = Strings.strsubutf8(this.text, 0, this.cursorPos);
var bufferEmpty = documentBuffer.EndOfBuffer();
documentBuffer.Append(textAfterCursor, this.GetCurrentFlags());
if (bufferEmpty)
{
availableDimension = new DimensionConstraint()
{
MaxWidth = (double)dimensionConstraint.MaxWidth - this.textScoper.GetWidth(this.flags.Font, this.flags.FontSize, this.text + addedText),
MaxHeight = dimensionConstraint.MaxHeight,
};
addedText += documentBuffer.Take(availableDimension, this.GetCurrentFlags());
}
}
if (this.cursor != null)
{
this.cursorPos += addedTextSize;
this.CursorChanged();
}
this.text += addedText;
this.TextChanged();
}
/// <summary>
/// Peeks the remaining text that fits the flag, until a limit by the maxLength.
/// </summary>
/// <param name="constraint">The constraints the text must fit.</param>
/// <param name="flags">The flags the text must fit.</param>
/// <returns>The peeked text.</returns>
public string Peek(IDimensionConstraint constraint, IFlags flags)
{
this.ThrowIfBufferIsEmpty();
if (constraint.MaxWidth == null)
{
throw new Exception("A max width must be provided in the constraint.");
}
var first = this.elements.First();
if (first.Flags == null || (flags != null && !first.Flags.Equals(flags)))
{
return(null);
}
return(this.textScoper.GetFittingText(first.Flags.Font, first.Flags.FontSize, first.Text, (double)constraint.MaxWidth));
}
/// <summary>
/// Gets the next element if it fits within the given constraint without removing it from the buffer.
/// </summary>
/// <param name="constraint">The constraint the resulting element should fit in.</param>
/// <returns>The resulting element.</returns>
public IElement Peek(IDimensionConstraint constraint)
{
this.ThrowIfBufferIsEmpty();
if (constraint.MaxWidth == null)
{
throw new Exception("A max width must be provided in the constraint.");
}
if (constraint.MaxHeight == null)
{
throw new Exception("A max height must be provided in the constraint.");
}
var first = this.elements.First();
if (first.Flags != null)
{
var text = this.Peek(constraint, first.Flags);
if (text == String.Empty)
{
return(null);
}
var formattedText = (IFormattedText)elementFactory.Create(first.Flags);
formattedText.SetText(text);
return(formattedText);
}
if (first.Element == null || first.Element.GetWidth() > constraint.MaxWidth || first.Element.GetHeight() > constraint.MaxHeight)
{
return(null);
}
return(first.Element);
}
/// <summary>
/// Takes the next element if it fits within the given constraint, removing it from the buffer.
/// </summary>
/// <param name="constraint">The constraint the resulting element should fit in.</param>
/// <returns>The resulting element.</returns>
public IElement Take(IDimensionConstraint constraint)
{
this.ThrowIfBufferIsEmpty();
if (constraint.MaxWidth == null)
{
throw new Exception("A max width must be provided in the constraint.");
}
var first = this.elements.First();
if (first.Flags != null)
{
var text = this.Take(constraint, first.Flags);
if (text == String.Empty)
{
return(null);
}
var formattedText = (IFormattedText)this.elementFactory.Create(first.Flags);
if (text != " ") // Ignore space, when causing a line break.
{
formattedText.SetText(text);
}
return(formattedText);
}
if (first.Element == null || first.Element.GetWidth() > constraint.MaxWidth || first.Element.GetHeight() > constraint.MaxHeight)
{
return(null);
}
this.elements.RemoveAt(0);
return(first.Element);
}
protected abstract T ProduceChild(IDocumentBuffer documentBuffer, IDimensionConstraint childConstraint);
public void Insert(IDocumentBuffer documentBuffer, IDimensionConstraint dimensionConstraint)
{
double dimensionConsumed = 0;
var child = this.FirstChild;
while (this.CurrentCursorChild != null && child != this.CurrentCursorChild)
{
dimensionConsumed += this.GetDimension(child.Object);
child = child.Next;
}
var objectConstraint = this.GetConstraint(dimensionConstraint, dimensionConsumed);
while (child != null)
{
child.Object.Insert(documentBuffer, objectConstraint);
if (documentBuffer.EndOfBuffer())
{
this.SizeChanged();
return;
}
dimensionConsumed += this.GetDimension(child.Object);
objectConstraint = this.GetConstraint(dimensionConstraint, dimensionConsumed);
if (child.Next != null)
{
child = child.Next;
if (this.CurrentCursorChild != null)
{
this.CurrentCursorChild.Object.ClearCursor();
this.CurrentCursorChild = child;
this.CurrentCursorChild.Object.SetCursor(false, this.Cursor);
}
}
else
{
break;
}
}
var newElement = this.ProduceChild(documentBuffer, objectConstraint);
while (newElement != null)
{
this.AppendChild(newElement);
dimensionConsumed += this.GetDimension(newElement);
objectConstraint = this.GetConstraint(dimensionConstraint, dimensionConsumed);
if (documentBuffer.EndOfBuffer())
{
break;
}
newElement = this.ProduceChild(documentBuffer, objectConstraint);
}
if (this.Cursor != null)
{
this.CurrentCursorChild?.Object.ClearCursor();
this.CurrentCursorChild = this.LastChild;
this.CurrentCursorChild.Object.SetCursor(true, this.Cursor);
}
this.SizeChanged();
}
protected abstract IDimensionConstraint GetConstraint(IDimensionConstraint originalConstraint, double consumed);
public void Insert(IDocumentBuffer documentBuffer, IDimensionConstraint dimensionConstraint)
{
throw new NotImplementedException();
}
protected override IPage ProduceChild(IDocumentBuffer documentBuffer, IDimensionConstraint childConstraint)
{
throw new System.NotImplementedException();
}
protected override IDimensionConstraint GetConstraint(IDimensionConstraint originalConstraint, double consumed)
{
return(originalConstraint);
}
protected override IElement ProduceChild(IDocumentBuffer documentBuffer, IDimensionConstraint childConstraint)
{
return(documentBuffer.Take(childConstraint));
}