TTMSFNCDataGridNodeCell Class

Extends TTMSFNCDataGridCell with an expand/collapse icon for rows in a tree-node hierarchy.

API unit family: TMSFNCDataGridCell Inherits from: TTMSFNCDataGridCell

Syntax

TTMSFNCDataGridNodeCell = class(TTMSFNCDataGridCell)

Remarks

The icon shifts the text rect to the right to make room. Assign OnExpand and OnCollapse handlers to react to user clicks. Set IconPosition to control vertical alignment and IconSize to override the default glyph size.

Properties

Name	Description
BitmapContainer	Optional bitmap container used to resolve named bitmaps referenced by BitmapName. (inherited from `TTMSFNCDataGridCell`)
Bottom	Bottom edge of the cell rectangle in canvas coordinates. (inherited from `TTMSFNCDataGridCell`)
ClipRect	Clipping rectangle applied during drawing; typically the visible viewport intersection. (inherited from `TTMSFNCDataGridCell`)
Column	Zero-based column index of this cell in the grid. (inherited from `TTMSFNCDataGridCell`)
Comment	Comment text shown in the tooltip and as the comment indicator when CommentIndicator is True. (inherited from `TTMSFNCDataGridCell`)
CommentIndicator	When True a small triangle is drawn in the cell corner to indicate the presence of a Comment; defaults to False. (inherited from `TTMSFNCDataGridCell`)
CommentIndicatorColor	Colour of the comment indicator triangle; defaults to gcOrange. (inherited from `TTMSFNCDataGridCell`)
CommentIndicatorRect	Bounding rectangle of the comment indicator triangle within the cell. (inherited from `TTMSFNCDataGridCell`)
Control	The live embedded VCL/FMX control displayed inside the cell, if any. (inherited from `TTMSFNCDataGridCell`)
ControlAlign	Docking mode for the embedded control; defaults to gcaNone. (inherited from `TTMSFNCDataGridCell`)
ControlClipping	When True the embedded control is clipped to the cell bounds; defaults to True. (inherited from `TTMSFNCDataGridCell`)
ControlMargins	Margins applied around the embedded control within the cell content area. (inherited from `TTMSFNCDataGridCell`)
ControlPosition	Nine-point placement position for the embedded control when ControlAlign is gcaNone; defaults to gcpCenterRight. (inherited from `TTMSFNCDataGridCell`)
ControlRect	Computed rectangle occupied by the embedded control within the cell. (inherited from `TTMSFNCDataGridCell`)
Coordinate	Column/row coordinate of this cell expressed as a TTMSFNCDataGridCellCoord record. (inherited from `TTMSFNCDataGridCell`)
Data	The cell data item providing Value, DisplayValue, and extended metadata. (inherited from `TTMSFNCDataGridCell`)
DrawElements	Set of draw elements painted during the next Draw call; defaults to FullElements. (inherited from `TTMSFNCDataGridCell`)
FilterButton	When True an inline filter button is drawn in the cell; defaults to False. (inherited from `TTMSFNCDataGridCell`)
FilterButtonRect	Bounding rectangle of the filter button glyph within the cell. (inherited from `TTMSFNCDataGridCell`)
Height	Height of the cell rectangle in logical pixels. (inherited from `TTMSFNCDataGridCell`)
IconPosition	Vertical alignment of the expand/collapse icon within the cell; defaults to gcipCenter.
IconSize	Size in logical pixels of the expand/collapse icon glyph.
IsExporting	True while the grid is performing an export render pass; False during normal display. (inherited from `TTMSFNCDataGridCell`)
Kind	Structural kind of this cell (data, fixed header, frozen pane, etc.). (inherited from `TTMSFNCDataGridCell`)
Layout	Appearance layout controlling fill, font, borders, and text style for this cell. (inherited from `TTMSFNCDataGridCell`)
Left	Left edge of the cell rectangle in canvas coordinates. (inherited from `TTMSFNCDataGridCell`)
NodeRect	Bounding rectangle of the expand/collapse icon within the cell.
Rect	Bounding rectangle of the cell in canvas coordinates. (inherited from `TTMSFNCDataGridCell`)
Right	Right edge of the cell rectangle in canvas coordinates. (inherited from `TTMSFNCDataGridCell`)
Row	Zero-based row index of this cell in the grid. (inherited from `TTMSFNCDataGridCell`)
Scale	Display scale factor (DPI scaling) applied when rendering this cell. (inherited from `TTMSFNCDataGridCell`)
SortIndicator	Sort-direction glyph shown in fixed header cells; defaults to gsiNone. (inherited from `TTMSFNCDataGridCell`)
SortIndicatorRect	Bounding rectangle of the sort indicator glyph within the cell. (inherited from `TTMSFNCDataGridCell`)
State	Current expanded or collapsed state of the tree node represented by this cell.
Text	The text string rendered in this cell, derived from DisplayValue or the formatted Value. (inherited from `TTMSFNCDataGridCell`)
TextRect	Computed rectangle available for text rendering after reserving space for the control, sort indicator, and filter button. (inherited from `TTMSFNCDataGridCell`)
Top	Top edge of the cell rectangle in canvas coordinates. (inherited from `TTMSFNCDataGridCell`)
Width	Width of the cell rectangle in logical pixels. (inherited from `TTMSFNCDataGridCell`)

Methods

Name	Description
AfterExport	Called by the grid after export is complete; restores any state changed by BeforeExport. (inherited from `TTMSFNCDataGridCell`)
BeforeExport	Called by the grid before export begins; prepares the cell for export rendering. (inherited from `TTMSFNCDataGridCell`)
ClearControlCache	Invalidates and releases the cached control bitmap so the control is re-rendered on the next draw. (inherited from `TTMSFNCDataGridCell`)
Draw	Performs a full repaint of the cell using AGraphics; calls DrawBackground, DrawContent, and all other draw sub-steps. (inherited from `TTMSFNCDataGridCell`)
DrawBackground	Draws the cell background fill and border stroke according to the current Layout. (inherited from `TTMSFNCDataGridCell`)
DrawCommentIndicator	Draws the comment indicator triangle in the cell corner when CommentIndicator is True. (inherited from `TTMSFNCDataGridCell`)
DrawContent	Draws all cell content (text, control, sort indicator, filter button, comment indicator). (inherited from `TTMSFNCDataGridCell`)
DrawControl	Draws the embedded control bitmap or live control within the cell's control rectangle. (inherited from `TTMSFNCDataGridCell`)
DrawFilterButton	Draws the inline filter button glyph when FilterButton is True. (inherited from `TTMSFNCDataGridCell`)
DrawSortIndicator	Draws the sort-direction indicator glyph according to SortIndicator. (inherited from `TTMSFNCDataGridCell`)
DrawText	Draws the cell text string inside the TextRect according to the current Layout alignment and trimming settings. (inherited from `TTMSFNCDataGridCell`)
HandleKey	Delivers a keyboard event to the cell; subclasses override to handle key interactions. (inherited from `TTMSFNCDataGridCell`)
HandleMouse	Delivers a mouse event to the cell; subclasses override to handle mouse interactions. (inherited from `TTMSFNCDataGridCell`)
IsHTML	Returns True when the cell's text contains HTML markup that the renderer should parse. (inherited from `TTMSFNCDataGridCell`)
ReInitialize	Re-initialises a pooled cell instance with new coordinates and data without allocating a new object. (inherited from `TTMSFNCDataGridCell`)
XYToAnchor	Returns the anchor URL at canvas position (X, Y) within the cell, or an empty string when no anchor is hit. (inherited from `TTMSFNCDataGridCell`)

Events