/// <summary>
/// Measures a cell created with this frame.
/// </summary>
/// <param name="measureContext">The context used to measure the cell.</param>
/// <param name="cellView">The cell to measure.</param>
/// <param name="collectionWithSeparator">A collection that can draw separators around the cell.</param>
/// <param name="referenceContainer">The cell view in <paramref name="collectionWithSeparator"/> that contains this cell.</param>
/// <param name="separatorLength">The length of the separator in <paramref name="collectionWithSeparator"/>.</param>
/// <param name="size">The cell size upon return, padding included.</param>
/// <param name="padding">The cell padding.</param>
public virtual void Measure(ILayoutMeasureContext measureContext, ILayoutCellView cellView, ILayoutCellViewCollection collectionWithSeparator, ILayoutCellView referenceContainer, Measure separatorLength, out Size size, out Padding padding)
{
padding = Padding.Empty;
ILayoutCommentCellView CommentCellView = cellView as ILayoutCommentCellView;
Debug.Assert(CommentCellView != null);
string Text = CommentHelper.Get(CommentCellView.Documentation);
CommentDisplayModes DisplayMode = cellView.StateView.ControllerView.CommentDisplayMode;
Debug.Assert(DisplayMode == CommentDisplayModes.OnFocus || DisplayMode == CommentDisplayModes.All);
bool IsFocused = cellView.StateView.ControllerView.Focus.CellView == cellView;
if (IsFocused && Text == null)
{
Text = string.Empty;
}
bool IsDisplayed = Text != null && ((DisplayMode == CommentDisplayModes.OnFocus && IsFocused) || DisplayMode == CommentDisplayModes.All);
if (IsDisplayed)
{
size = measureContext.MeasureText(Text, TextStyles.Comment, Controller.Measure.Floating);
}
else
{
size = Size.Empty;
}
Debug.Assert(RegionHelper.IsValid(size));
}
private protected void DrawCommentCaret(ILayoutCommentFocus commentFocus)
{
ILayoutCommentCellView CellView = commentFocus.CellView;
string Text = CommentHelper.Get(CellView.Documentation);
if (Text == null)
{
Text = string.Empty;
}
Point CellOrigin = CellView.CellOrigin;
Padding CellPadding = CellView.CellPadding;
Point OriginWithPadding = CellOrigin.Moved(CellPadding.Left, CellPadding.Top);
DrawContext.ShowCaret(OriginWithPadding, Text, TextStyles.Comment, ActualCaretMode, CaretPosition);
}
/// <summary>
/// Draws a cell created with this frame.
/// </summary>
/// <param name="drawContext">The context used to draw the cell.</param>
/// <param name="cellView">The cell to draw.</param>
/// <param name="origin">The location where to start drawing.</param>
/// <param name="size">The drawing size, padding included.</param>
/// <param name="padding">The padding to use when drawing.</param>
public virtual void Draw(ILayoutDrawContext drawContext, ILayoutCellView cellView, Point origin, Size size, Padding padding)
{
ILayoutCommentCellView CommentCellView = cellView as ILayoutCommentCellView;
Debug.Assert(CommentCellView != null);
string Text = CommentHelper.Get(CommentCellView.Documentation);
CommentDisplayModes DisplayMode = cellView.StateView.ControllerView.CommentDisplayMode;
Debug.Assert(DisplayMode == CommentDisplayModes.OnFocus || DisplayMode == CommentDisplayModes.All);
bool IsFocused = cellView.StateView.ControllerView.Focus.CellView == cellView;
if (IsFocused && Text == null)
{
Text = string.Empty;
}
if (Text != null)
{
if ((DisplayMode == CommentDisplayModes.OnFocus && IsFocused) || DisplayMode == CommentDisplayModes.All)
{
Point OriginWithPadding = origin.Moved(padding.Left, padding.Top);
drawContext.DrawTextBackground(Text, OriginWithPadding, TextStyles.Comment);
LayoutControllerView ControllerView = cellView.StateView.ControllerView;
if (ControllerView.Selection is ILayoutCommentSelection AsCommentSelection && AsCommentSelection.StateView == cellView.StateView)
{
int Start = AsCommentSelection.Start;
int End = AsCommentSelection.End;
Debug.Assert(Start <= End);
drawContext.DrawSelectionText(Text, OriginWithPadding, TextStyles.Comment, Start, End);
}
drawContext.DrawText(Text, OriginWithPadding, TextStyles.Comment, isFocused: false); // The caret is drawn separately.
}
else if (DisplayMode == CommentDisplayModes.OnFocus && cellView.StateView.ControllerView.ShowUnfocusedComments)
{
drawContext.DrawCommentIcon(new Rect(cellView.CellOrigin, Size.Empty));
}
}
}
/// <summary>
/// Prints a cell created with this frame.
/// </summary>
/// <param name="printContext">The context used to print the cell.</param>
/// <param name="cellView">The cell to print.</param>
/// <param name="origin">The location where to start printing.</param>
/// <param name="size">The printing size, padding included.</param>
/// <param name="padding">The padding to use when printing.</param>
public virtual void Print(ILayoutPrintContext printContext, ILayoutCellView cellView, Point origin, Size size, Padding padding)
{
ILayoutCommentCellView CommentCellView = cellView as ILayoutCommentCellView;
Debug.Assert(CommentCellView != null);
string Text = CommentHelper.Get(CommentCellView.Documentation);
if (Text != null)
{
CommentDisplayModes DisplayMode = cellView.StateView.ControllerView.CommentDisplayMode;
Debug.Assert(DisplayMode == CommentDisplayModes.OnFocus || DisplayMode == CommentDisplayModes.All);
if (DisplayMode == CommentDisplayModes.All)
{
Point OriginWithPadding = origin.Moved(padding.Left, padding.Top);
printContext.PrintText(Text, OriginWithPadding, TextStyles.Comment);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="LayoutCommentFocus"/> class.
/// </summary>
public LayoutCommentFocus(ILayoutCommentCellView cellView)
: base(cellView)
{
}
