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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.ComponentModel;
using System.Drawing;
namespace System.Windows.Forms;
/// <summary>
/// Identifies a cell in the dataGridView.
/// </summary>
public partial class DataGridViewTextBoxCell : DataGridViewCell
{
private static readonly int s_propTextBoxCellMaxInputLength = PropertyStore.CreateKey();
private static readonly int s_propTextBoxCellEditingTextBox = PropertyStore.CreateKey();
private const byte DATAGRIDVIEWTEXTBOXCELL_ignoreNextMouseClick = 0x01;
private const byte DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetLeft = 3;
private const byte DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetRight = 4;
private const byte DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginLeft = 0;
private const byte DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginRight = 0;
private const byte DATAGRIDVIEWTEXTBOXCELL_verticalTextOffsetTop = 2;
private const byte DATAGRIDVIEWTEXTBOXCELL_verticalTextOffsetBottom = 1;
private const byte DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginTopWithWrapping = 1;
private const byte DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginTopWithoutWrapping = 2;
private const byte DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginBottom = 1;
private const int MaxInputLengthDefault = 32767;
private byte _flagsState; // see DATAGRIDVIEWTEXTBOXCELL_ constants above
private static readonly Type s_defaultFormattedValueType = typeof(string);
private static readonly Type s_defaultValueType = typeof(object);
private static readonly Type s_cellType = typeof(DataGridViewTextBoxCell);
public DataGridViewTextBoxCell()
{
}
/// <summary>
/// Creates a new AccessibleObject for this DataGridViewTextBoxCell instance.
/// The AccessibleObject instance returned by this method supports ControlType UIA property.
/// </summary>
/// <returns>
/// AccessibleObject for this DataGridViewTextBoxCell instance.
/// </returns>
protected override AccessibleObject CreateAccessibilityInstance() => new DataGridViewTextBoxCellAccessibleObject(this);
private DataGridViewTextBoxEditingControl? EditingTextBox
{
get => Properties.GetValueOrDefault<DataGridViewTextBoxEditingControl?>(s_propTextBoxCellEditingTextBox);
set => Properties.AddOrRemoveValue(s_propTextBoxCellEditingTextBox, value);
}
public override Type FormattedValueType
{
get
{
// we return string for the formatted type
return s_defaultFormattedValueType;
}
}
[DefaultValue(MaxInputLengthDefault)]
public virtual int MaxInputLength
{
get => Properties.GetValueOrDefault(s_propTextBoxCellMaxInputLength, MaxInputLengthDefault);
set
{
ArgumentOutOfRangeException.ThrowIfNegative(value);
Properties.AddOrRemoveValue(s_propTextBoxCellMaxInputLength, value, defaultValue: MaxInputLengthDefault);
if (OwnsEditingTextBox(RowIndex))
{
EditingTextBox.MaxLength = value;
}
}
}
public override Type ValueType
{
get
{
Type? valueType = base.ValueType;
if (valueType is not null)
{
return valueType;
}
return s_defaultValueType;
}
}
// Called when the row that owns the editing control gets un-shared.
internal override void CacheEditingControl()
{
EditingTextBox = DataGridView!.EditingControl as DataGridViewTextBoxEditingControl;
}
public override object Clone()
{
DataGridViewTextBoxCell dataGridViewCell;
Type thisType = GetType();
if (thisType == s_cellType) // performance improvement
{
dataGridViewCell = new DataGridViewTextBoxCell();
}
else
{
dataGridViewCell = (DataGridViewTextBoxCell)Activator.CreateInstance(thisType)!;
}
CloneInternal(dataGridViewCell);
dataGridViewCell.MaxInputLength = MaxInputLength;
return dataGridViewCell;
}
[EditorBrowsable(EditorBrowsableState.Advanced)]
public override void DetachEditingControl()
{
DataGridView? dataGridView = DataGridView;
if (dataGridView?.EditingControl is null)
{
throw new InvalidOperationException();
}
if (dataGridView.EditingControl is TextBox textBox)
{
textBox.ClearUndo();
}
EditingTextBox = null;
base.DetachEditingControl();
}
private Rectangle GetAdjustedEditingControlBounds(Rectangle editingControlBounds, DataGridViewCellStyle cellStyle)
{
Debug.Assert(cellStyle.WrapMode != DataGridViewTriState.NotSet);
Debug.Assert(DataGridView is not null);
int originalWidth = editingControlBounds.Width;
if (DataGridView.EditingControl is TextBox txtEditingControl)
{
switch (cellStyle.Alignment)
{
case DataGridViewContentAlignment.TopLeft:
case DataGridViewContentAlignment.MiddleLeft:
case DataGridViewContentAlignment.BottomLeft:
// Add 3 pixels on the left of the editing control to match non-editing text position
if (DataGridView.RightToLeftInternal)
{
editingControlBounds.X += 1;
editingControlBounds.Width = Math.Max(0, editingControlBounds.Width - DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetLeft - 2);
}
else
{
editingControlBounds.X += DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetLeft;
editingControlBounds.Width = Math.Max(0, editingControlBounds.Width - DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetLeft - 1);
}
break;
case DataGridViewContentAlignment.TopCenter:
case DataGridViewContentAlignment.MiddleCenter:
case DataGridViewContentAlignment.BottomCenter:
editingControlBounds.X += 1;
editingControlBounds.Width = Math.Max(0, editingControlBounds.Width - 3);
break;
case DataGridViewContentAlignment.TopRight:
case DataGridViewContentAlignment.MiddleRight:
case DataGridViewContentAlignment.BottomRight:
// Shorten the editing control by 5 pixels to match non-editing text position
if (DataGridView.RightToLeftInternal)
{
editingControlBounds.X += DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetRight - 1;
editingControlBounds.Width = Math.Max(0, editingControlBounds.Width - DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetRight);
}
else
{
editingControlBounds.X += 1;
editingControlBounds.Width = Math.Max(0, editingControlBounds.Width - DATAGRIDVIEWTEXTBOXCELL_horizontalTextOffsetRight - 1);
}
break;
}
switch (cellStyle.Alignment)
{
case DataGridViewContentAlignment.TopLeft:
case DataGridViewContentAlignment.TopCenter:
case DataGridViewContentAlignment.TopRight:
editingControlBounds.Y += DATAGRIDVIEWTEXTBOXCELL_verticalTextOffsetTop;
editingControlBounds.Height = Math.Max(0, editingControlBounds.Height - DATAGRIDVIEWTEXTBOXCELL_verticalTextOffsetTop);
break;
case DataGridViewContentAlignment.MiddleLeft:
case DataGridViewContentAlignment.MiddleCenter:
case DataGridViewContentAlignment.MiddleRight:
editingControlBounds.Height++;
break;
case DataGridViewContentAlignment.BottomLeft:
case DataGridViewContentAlignment.BottomCenter:
case DataGridViewContentAlignment.BottomRight:
editingControlBounds.Height = Math.Max(0, editingControlBounds.Height - DATAGRIDVIEWTEXTBOXCELL_verticalTextOffsetBottom);
break;
}
int preferredHeight;
if (cellStyle.WrapMode == DataGridViewTriState.False)
{
preferredHeight = txtEditingControl.PreferredSize.Height;
}
else
{
string editedFormattedValue = (string)((IDataGridViewEditingControl)txtEditingControl).GetEditingControlFormattedValue(DataGridViewDataErrorContexts.Formatting);
if (string.IsNullOrEmpty(editedFormattedValue))
{
editedFormattedValue = " ";
}
TextFormatFlags flags = DataGridViewUtilities.ComputeTextFormatFlagsForCellStyleAlignment(DataGridView.RightToLeftInternal, cellStyle.Alignment, cellStyle.WrapMode);
using var screen = GdiCache.GetScreenDCGraphics();
preferredHeight = MeasureTextHeight(screen, editedFormattedValue, cellStyle.Font!, originalWidth, flags);
}
if (preferredHeight < editingControlBounds.Height)
{
switch (cellStyle.Alignment)
{
case DataGridViewContentAlignment.TopLeft:
case DataGridViewContentAlignment.TopCenter:
case DataGridViewContentAlignment.TopRight:
// Single pixel move - leave it as is for now
break;
case DataGridViewContentAlignment.MiddleLeft:
case DataGridViewContentAlignment.MiddleCenter:
case DataGridViewContentAlignment.MiddleRight:
editingControlBounds.Y += (editingControlBounds.Height - preferredHeight) / 2;
break;
case DataGridViewContentAlignment.BottomLeft:
case DataGridViewContentAlignment.BottomCenter:
case DataGridViewContentAlignment.BottomRight:
editingControlBounds.Y += editingControlBounds.Height - preferredHeight;
break;
}
}
}
return editingControlBounds;
}
protected override Rectangle GetContentBounds(Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex)
{
ArgumentNullException.ThrowIfNull(cellStyle);
if (DataGridView is null || rowIndex < 0 || OwningColumn is null)
{
return Rectangle.Empty;
}
object? value = GetValue(rowIndex);
object? formattedValue = GetFormattedValue(
value,
rowIndex,
ref cellStyle,
valueTypeConverter: null,
formattedValueTypeConverter: null,
DataGridViewDataErrorContexts.Formatting);
ComputeBorderStyleCellStateAndCellBounds(
rowIndex,
out DataGridViewAdvancedBorderStyle dgvabsEffective,
out DataGridViewElementStates cellState,
out Rectangle cellBounds);
Rectangle textBounds = PaintPrivate(
graphics,
cellBounds,
cellBounds,
rowIndex,
cellState,
formattedValue,
errorText: null, // textBounds is independent of errorText
cellStyle,
dgvabsEffective,
DataGridViewPaintParts.ContentForeground,
computeContentBounds: true,
computeErrorIconBounds: false,
paint: false);
#if DEBUG
Rectangle textBoundsDebug = PaintPrivate(
graphics,
cellBounds,
cellBounds,
rowIndex,
cellState,
formattedValue,
GetErrorText(rowIndex),
cellStyle,
dgvabsEffective,
DataGridViewPaintParts.ContentForeground,
computeContentBounds: true,
computeErrorIconBounds: false,
paint: false);
Debug.Assert(textBoundsDebug.Equals(textBounds));
#endif
return textBounds;
}
private protected override string? GetDefaultToolTipText()
{
return string.IsNullOrEmpty(Value?.ToString()?.Trim(' ')) || Value is DBNull
? SR.DefaultDataGridViewTextBoxCellToolTipText
: null;
}
protected override Rectangle GetErrorIconBounds(Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex)
{
ArgumentNullException.ThrowIfNull(cellStyle);
if (DataGridView is null ||
rowIndex < 0 ||
OwningColumn is null ||
!DataGridView.ShowCellErrors ||
string.IsNullOrEmpty(GetErrorText(rowIndex)))
{
return Rectangle.Empty;
}
ComputeBorderStyleCellStateAndCellBounds(
rowIndex,
out DataGridViewAdvancedBorderStyle dgvabsEffective,
out DataGridViewElementStates cellState,
out Rectangle cellBounds);
Rectangle errorBounds = PaintPrivate(graphics,
cellBounds,
cellBounds,
rowIndex,
cellState,
formattedValue: null, // errorIconBounds is independent of formattedValue
GetErrorText(rowIndex),
cellStyle,
dgvabsEffective,
DataGridViewPaintParts.ContentForeground,
computeContentBounds: false,
computeErrorIconBounds: true,
paint: false);
#if DEBUG
object? value = GetValue(rowIndex);
object? formattedValue = GetFormattedValue(
value,
rowIndex,
ref cellStyle,
valueTypeConverter: null,
formattedValueTypeConverter: null,
DataGridViewDataErrorContexts.Formatting);
Rectangle errorBoundsDebug = PaintPrivate(graphics,
cellBounds,
cellBounds,
rowIndex,
cellState,
formattedValue,
GetErrorText(rowIndex),
cellStyle,
dgvabsEffective,
DataGridViewPaintParts.ContentForeground,
computeContentBounds: false,
computeErrorIconBounds: true,
paint: false);
Debug.Assert(errorBoundsDebug.Equals(errorBounds));
#endif
return errorBounds;
}
protected override Size GetPreferredSize(
Graphics graphics,
DataGridViewCellStyle cellStyle,
int rowIndex,
Size constraintSize)
{
if (DataGridView is null)
{
return new Size(-1, -1);
}
ArgumentNullException.ThrowIfNull(cellStyle);
Size preferredSize;
Rectangle borderWidthsRect = StdBorderWidths;
int borderAndPaddingWidths = borderWidthsRect.Left + borderWidthsRect.Width + cellStyle.Padding.Horizontal;
int borderAndPaddingHeights = borderWidthsRect.Top + borderWidthsRect.Height + cellStyle.Padding.Vertical;
DataGridViewFreeDimension freeDimension = GetFreeDimensionFromConstraint(constraintSize);
object? formattedValue = GetFormattedValue(rowIndex, ref cellStyle, DataGridViewDataErrorContexts.Formatting | DataGridViewDataErrorContexts.PreferredSize);
string? formattedString = formattedValue as string;
if (string.IsNullOrEmpty(formattedString))
{
formattedString = " ";
}
TextFormatFlags flags = DataGridViewUtilities.ComputeTextFormatFlagsForCellStyleAlignment(DataGridView.RightToLeftInternal, cellStyle.Alignment, cellStyle.WrapMode);
if (cellStyle.WrapMode == DataGridViewTriState.True && formattedString.Length > 1)
{
switch (freeDimension)
{
case DataGridViewFreeDimension.Width:
{
preferredSize = new Size(
MeasureTextWidth(
graphics,
formattedString,
cellStyle.Font!,
Math.Max(1, constraintSize.Height - borderAndPaddingHeights - DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginTopWithWrapping - DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginBottom),
flags),
0);
break;
}
case DataGridViewFreeDimension.Height:
{
preferredSize = new Size(
0,
MeasureTextHeight(
graphics,
formattedString,
cellStyle.Font!,
Math.Max(1, constraintSize.Width - borderAndPaddingWidths - DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginLeft - DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginRight),
flags));
break;
}
default:
{
preferredSize = MeasureTextPreferredSize(
graphics,
formattedString,
cellStyle.Font!,
5.0F,
flags);
break;
}
}
}
else
{
switch (freeDimension)
{
case DataGridViewFreeDimension.Width:
{
preferredSize = new Size(
MeasureTextSize(graphics, formattedString, cellStyle.Font!, flags).Width,
0);
break;
}
case DataGridViewFreeDimension.Height:
{
preferredSize = new Size(
0,
MeasureTextSize(graphics, formattedString, cellStyle.Font!, flags).Height);
break;
}
default:
{
preferredSize = MeasureTextSize(graphics, formattedString, cellStyle.Font!, flags);
break;
}
}
}
if (freeDimension != DataGridViewFreeDimension.Height)
{
preferredSize.Width += DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginLeft + DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginRight + borderAndPaddingWidths;
if (DataGridView.ShowCellErrors)
{
// Making sure that there is enough room for the potential error icon
preferredSize.Width = Math.Max(preferredSize.Width, borderAndPaddingWidths + IconMarginWidth * 2 + s_iconsWidth);
}
}
if (freeDimension != DataGridViewFreeDimension.Width)
{
int verticalTextMarginTop = cellStyle.WrapMode == DataGridViewTriState.True ? DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginTopWithWrapping : DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginTopWithoutWrapping;
preferredSize.Height += verticalTextMarginTop + DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginBottom + borderAndPaddingHeights;
if (DataGridView.ShowCellErrors)
{
// Making sure that there is enough room for the potential error icon
preferredSize.Height = Math.Max(preferredSize.Height, borderAndPaddingHeights + IconMarginHeight * 2 + s_iconsHeight);
}
}
return preferredSize;
}
public override void InitializeEditingControl(int rowIndex, object? initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
{
Debug.Assert(DataGridView is not null &&
DataGridView.EditingControl is not null);
Debug.Assert(!ReadOnly);
base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
if (DataGridView.EditingControl is TextBox textBox)
{
textBox.BorderStyle = BorderStyle.None;
textBox.AcceptsReturn = textBox.Multiline = dataGridViewCellStyle.WrapMode == DataGridViewTriState.True;
textBox.MaxLength = MaxInputLength;
if (initialFormattedValue is not string initialFormattedValueStr)
{
textBox.Text = string.Empty;
}
else
{
textBox.Text = initialFormattedValueStr;
}
EditingTextBox = DataGridView.EditingControl as DataGridViewTextBoxEditingControl;
}
}
public override bool KeyEntersEditMode(KeyEventArgs e)
{
if (((char.IsLetterOrDigit((char)e.KeyCode) && !(e.KeyCode >= Keys.F1 && e.KeyCode <= Keys.F24)) ||
(e.KeyCode >= Keys.NumPad0 && e.KeyCode <= Keys.Divide) ||
(e.KeyCode >= Keys.OemSemicolon && e.KeyCode <= Keys.Oem102) ||
(e.KeyCode == Keys.Space && !e.Shift)) &&
!e.Alt &&
!e.Control)
{
return true;
}
return base.KeyEntersEditMode(e);
}
protected override void OnEnter(int rowIndex, bool throughMouseClick)
{
if (DataGridView is null)
{
return;
}
if (throughMouseClick)
{
_flagsState |= DATAGRIDVIEWTEXTBOXCELL_ignoreNextMouseClick;
}
}
protected override void OnLeave(int rowIndex, bool throughMouseClick)
{
if (DataGridView is null)
{
return;
}
_flagsState = (byte)(_flagsState & ~DATAGRIDVIEWTEXTBOXCELL_ignoreNextMouseClick);
}
protected override void OnMouseClick(DataGridViewCellMouseEventArgs e)
{
if (DataGridView is null)
{
return;
}
Debug.Assert(e.ColumnIndex == ColumnIndex);
Point ptCurrentCell = DataGridView.CurrentCellAddress;
if (ptCurrentCell.X == e.ColumnIndex && ptCurrentCell.Y == e.RowIndex && e.Button == MouseButtons.Left)
{
if ((_flagsState & DATAGRIDVIEWTEXTBOXCELL_ignoreNextMouseClick) != 0x00)
{
_flagsState = (byte)(_flagsState & ~DATAGRIDVIEWTEXTBOXCELL_ignoreNextMouseClick);
}
else if (DataGridView.EditMode != DataGridViewEditMode.EditProgrammatically)
{
DataGridView.BeginEdit(selectAll: true);
}
}
}
[MemberNotNullWhen(true, nameof(EditingTextBox))]
private bool OwnsEditingTextBox(int rowIndex) =>
rowIndex != -1 &&
EditingTextBox is not null &&
rowIndex == ((IDataGridViewEditingControl)EditingTextBox).EditingControlRowIndex;
protected override void Paint(
Graphics graphics,
Rectangle clipBounds,
Rectangle cellBounds,
int rowIndex,
DataGridViewElementStates cellState,
object? value,
object? formattedValue,
string? errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts)
{
ArgumentNullException.ThrowIfNull(cellStyle);
if (DataGridView is null)
{
return;
}
PaintPrivate(
graphics,
clipBounds,
cellBounds,
rowIndex,
cellState,
formattedValue,
errorText,
cellStyle,
advancedBorderStyle,
paintParts,
computeContentBounds: false,
computeErrorIconBounds: false,
paint: true);
}
// PaintPrivate is used in three places that need to duplicate the paint code:
// 1. DataGridViewCell::Paint method
// 2. DataGridViewCell::GetContentBounds
// 3. DataGridViewCell::GetErrorIconBounds
//
// if computeContentBounds is true then PaintPrivate returns the contentBounds
// else if computeErrorIconBounds is true then PaintPrivate returns the errorIconBounds
// else it returns Rectangle.Empty;
private Rectangle PaintPrivate(
Graphics graphics,
Rectangle clipBounds,
Rectangle cellBounds,
int rowIndex,
DataGridViewElementStates cellState,
object? formattedValue,
string? errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts,
bool computeContentBounds,
bool computeErrorIconBounds,
bool paint)
{
// Parameter checking. One bit and one bit only should be turned on.
Debug.Assert(paint || computeContentBounds || computeErrorIconBounds);
Debug.Assert(!paint || !computeContentBounds || !computeErrorIconBounds);
Debug.Assert(!computeContentBounds || !computeErrorIconBounds || !paint);
Debug.Assert(!computeErrorIconBounds || !paint || !computeContentBounds);
Debug.Assert(cellStyle is not null);
// If computeContentBounds == TRUE then resultBounds will be the contentBounds.
// If computeErrorIconBounds == TRUE then resultBounds will be the error icon bounds.
// Else resultBounds will be Rectangle.Empty;
Rectangle resultBounds = Rectangle.Empty;
if (paint && PaintBorder(paintParts))
{
PaintBorder(graphics, clipBounds, cellBounds, cellStyle, advancedBorderStyle);
}
Rectangle borderWidths = BorderWidths(advancedBorderStyle);
Rectangle valBounds = cellBounds;
valBounds.Offset(borderWidths.X, borderWidths.Y);
valBounds.Width -= borderWidths.Right;
valBounds.Height -= borderWidths.Bottom;
Point ptCurrentCell = DataGridView!.CurrentCellAddress;
bool cellCurrent = ptCurrentCell.X == ColumnIndex && ptCurrentCell.Y == rowIndex;
bool cellEdited = cellCurrent && DataGridView.EditingControl is not null;
bool cellSelected = (cellState & DataGridViewElementStates.Selected) != 0;
bool notCollapsed = valBounds.Width > 0 && valBounds.Height > 0;
Color brushColor = PaintSelectionBackground(paintParts) && cellSelected && !cellEdited
? cellStyle.SelectionBackColor
: cellStyle.BackColor;
if (paint && PaintBackground(paintParts) && !brushColor.HasTransparency() && notCollapsed)
{
using var brush = brushColor.GetCachedSolidBrushScope();
graphics.FillRectangle(brush, valBounds);
}
if (cellStyle.Padding != Padding.Empty)
{
if (DataGridView.RightToLeftInternal)
{
valBounds.Offset(cellStyle.Padding.Right, cellStyle.Padding.Top);
}
else
{
valBounds.Offset(cellStyle.Padding.Left, cellStyle.Padding.Top);
}
valBounds.Width -= cellStyle.Padding.Horizontal;
valBounds.Height -= cellStyle.Padding.Vertical;
}
if (paint && cellCurrent && !cellEdited)
{
// Draw focus rectangle
if (PaintFocus(paintParts) && DataGridView.ShowFocusCues && DataGridView.Focused && notCollapsed)
{
ControlPaint.DrawFocusRectangle(graphics, valBounds, Color.Empty, cellStyle.ForeColor);
}
}
Rectangle errorBounds = valBounds;
string? formattedString = formattedValue as string;
if (formattedString is not null && ((paint && !cellEdited) || computeContentBounds))
{
// Font independent margins
int verticalTextMarginTop = cellStyle.WrapMode == DataGridViewTriState.True
? DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginTopWithWrapping
: DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginTopWithoutWrapping;
valBounds.Offset(DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginLeft, verticalTextMarginTop);
valBounds.Width -= DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginLeft + DATAGRIDVIEWTEXTBOXCELL_horizontalTextMarginRight;
valBounds.Height -= verticalTextMarginTop + DATAGRIDVIEWTEXTBOXCELL_verticalTextMarginBottom;
if (valBounds.Width > 0 && valBounds.Height > 0)
{
TextFormatFlags flags = DataGridViewUtilities.ComputeTextFormatFlagsForCellStyleAlignment(
DataGridView.RightToLeftInternal,
cellStyle.Alignment,
cellStyle.WrapMode);
if (paint)
{
if (PaintContentForeground(paintParts))
{
if ((flags & TextFormatFlags.SingleLine) != 0)
{
flags |= TextFormatFlags.EndEllipsis;
}
TextRenderer.DrawText(graphics,
formattedString,
cellStyle.Font,
valBounds,
cellSelected ? cellStyle.SelectionForeColor : cellStyle.ForeColor,
flags);
}
}
else
{
resultBounds = DataGridViewUtilities.GetTextBounds(valBounds, formattedString, flags, cellStyle);
}
}
}
else if (computeErrorIconBounds)
{
if (!string.IsNullOrEmpty(errorText))
{
resultBounds = ComputeErrorIconBounds(errorBounds);
}
}
else
{
Debug.Assert(cellEdited || formattedString is null);
Debug.Assert(paint || computeContentBounds);
}
if (DataGridView.ShowCellErrors && paint && PaintErrorIcon(paintParts))
{
PaintErrorIcon(graphics, cellStyle, rowIndex, cellBounds, errorBounds, errorText);
}
return resultBounds;
}
public override void PositionEditingControl(
bool setLocation,
bool setSize,
Rectangle cellBounds,
Rectangle cellClip,
DataGridViewCellStyle cellStyle,
bool singleVerticalBorderAdded,
bool singleHorizontalBorderAdded,
bool isFirstDisplayedColumn,
bool isFirstDisplayedRow)
{
Rectangle editingControlBounds = PositionEditingPanel(
cellBounds,
cellClip,
cellStyle,
singleVerticalBorderAdded,
singleHorizontalBorderAdded,
isFirstDisplayedColumn,
isFirstDisplayedRow);
editingControlBounds = GetAdjustedEditingControlBounds(editingControlBounds, cellStyle);
DataGridView!.EditingControl!.Location = new Point(editingControlBounds.X, editingControlBounds.Y);
DataGridView.EditingControl.Size = new Size(editingControlBounds.Width, editingControlBounds.Height);
}
public override string ToString()
=> $"DataGridViewTextBoxCell {{ ColumnIndex={ColumnIndex}, RowIndex={RowIndex} }}";
}
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