Added DataGridViewUpDown control from GradeCalc
This commit is contained in:
CreepyCrafter24
parent
9d058ede6d
commit
8141ae1941
|
|
@ -0,0 +1,775 @@
|
|||
using System;
|
||||
using System.ComponentModel;
|
||||
using System.Diagnostics;
|
||||
using System.Drawing;
|
||||
using System.Globalization;
|
||||
using System.Runtime.InteropServices;
|
||||
using System.Windows.Forms;
|
||||
|
||||
namespace GradeCalc
|
||||
{
|
||||
public class DataGridViewNumericUpDownCell : DataGridViewTextBoxCell
|
||||
{
|
||||
// Used in KeyEntersEditMode function
|
||||
[DllImport("USER32.DLL", CharSet = CharSet.Auto)]
|
||||
private static extern short VkKeyScan(char key);
|
||||
|
||||
// Used in TranslateAlignment function
|
||||
private static readonly DataGridViewContentAlignment anyRight = DataGridViewContentAlignment.TopRight |
|
||||
DataGridViewContentAlignment.MiddleRight |
|
||||
DataGridViewContentAlignment.BottomRight;
|
||||
|
||||
private static readonly DataGridViewContentAlignment anyCenter = DataGridViewContentAlignment.TopCenter |
|
||||
DataGridViewContentAlignment.MiddleCenter |
|
||||
DataGridViewContentAlignment.BottomCenter;
|
||||
|
||||
// Default dimensions of the static rendering bitmap used for the painting of the non-edited cells
|
||||
private const int DATAGRIDVIEWNUMERICUPDOWNCELL_defaultRenderingBitmapWidth = 100;
|
||||
|
||||
private const int DATAGRIDVIEWNUMERICUPDOWNCELL_defaultRenderingBitmapHeight = 22;
|
||||
|
||||
// Default value of the DecimalPlaces property
|
||||
internal const int DATAGRIDVIEWNUMERICUPDOWNCELL_defaultDecimalPlaces = 0;
|
||||
|
||||
// Default value of the Increment property
|
||||
internal const decimal DATAGRIDVIEWNUMERICUPDOWNCELL_defaultIncrement = decimal.One;
|
||||
|
||||
// Default value of the Maximum property
|
||||
internal const decimal DATAGRIDVIEWNUMERICUPDOWNCELL_defaultMaximum = (decimal)100.0;
|
||||
|
||||
// Default value of the Minimum property
|
||||
internal const decimal DATAGRIDVIEWNUMERICUPDOWNCELL_defaultMinimum = decimal.Zero;
|
||||
|
||||
// Default value of the ThousandsSeparator property
|
||||
internal const bool DATAGRIDVIEWNUMERICUPDOWNCELL_defaultThousandsSeparator = false;
|
||||
|
||||
// Type of this cell's editing control
|
||||
private static Type defaultEditType = typeof(DataGridViewNumericUpDownEditingControl);
|
||||
|
||||
// Type of this cell's value. The formatted value type is string, the same as the base class DataGridViewTextBoxCell
|
||||
private static Type defaultValueType = typeof(decimal);
|
||||
|
||||
// The bitmap used to paint the non-edited cells via a call to NumericUpDown.DrawToBitmap
|
||||
[ThreadStatic]
|
||||
private static Bitmap renderingBitmap;
|
||||
|
||||
// The NumericUpDown control used to paint the non-edited cells via a call to NumericUpDown.DrawToBitmap
|
||||
[ThreadStatic]
|
||||
private static NumericUpDown paintingNumericUpDown;
|
||||
|
||||
private int decimalPlaces; // Caches the value of the DecimalPlaces property
|
||||
private decimal increment; // Caches the value of the Increment property
|
||||
private decimal minimum; // Caches the value of the Minimum property
|
||||
private decimal maximum; // Caches the value of the Maximum property
|
||||
private bool thousandsSeparator; // Caches the value of the ThousandsSeparator property
|
||||
|
||||
/// <summary>
|
||||
/// Constructor for the DataGridViewNumericUpDownCell cell type
|
||||
/// </summary>
|
||||
public DataGridViewNumericUpDownCell()
|
||||
{
|
||||
// Create a thread specific bitmap used for the painting of the non-edited cells
|
||||
if (renderingBitmap == null)
|
||||
{
|
||||
renderingBitmap = new Bitmap(DATAGRIDVIEWNUMERICUPDOWNCELL_defaultRenderingBitmapWidth, DATAGRIDVIEWNUMERICUPDOWNCELL_defaultRenderingBitmapHeight);
|
||||
}
|
||||
|
||||
// Create a thread specific NumericUpDown control used for the painting of the non-edited cells
|
||||
if (paintingNumericUpDown == null)
|
||||
{
|
||||
paintingNumericUpDown = new NumericUpDown();
|
||||
// Some properties only need to be set once for the lifetime of the control:
|
||||
paintingNumericUpDown.BorderStyle = BorderStyle.None;
|
||||
paintingNumericUpDown.Maximum = decimal.MaxValue / 10;
|
||||
paintingNumericUpDown.Minimum = decimal.MinValue / 10;
|
||||
}
|
||||
|
||||
// Set the default values of the properties:
|
||||
decimalPlaces = DATAGRIDVIEWNUMERICUPDOWNCELL_defaultDecimalPlaces;
|
||||
increment = DATAGRIDVIEWNUMERICUPDOWNCELL_defaultIncrement;
|
||||
minimum = DATAGRIDVIEWNUMERICUPDOWNCELL_defaultMinimum;
|
||||
maximum = DATAGRIDVIEWNUMERICUPDOWNCELL_defaultMaximum;
|
||||
thousandsSeparator = DATAGRIDVIEWNUMERICUPDOWNCELL_defaultThousandsSeparator;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// The DecimalPlaces property replicates the one from the NumericUpDown control
|
||||
/// </summary>
|
||||
[
|
||||
DefaultValue(DATAGRIDVIEWNUMERICUPDOWNCELL_defaultDecimalPlaces)
|
||||
]
|
||||
public int DecimalPlaces
|
||||
{
|
||||
get {
|
||||
return decimalPlaces;
|
||||
}
|
||||
|
||||
set {
|
||||
if (value < 0 || value > 99)
|
||||
{
|
||||
throw new ArgumentOutOfRangeException("The DecimalPlaces property cannot be smaller than 0 or larger than 99.");
|
||||
}
|
||||
if (decimalPlaces != value)
|
||||
{
|
||||
SetDecimalPlaces(RowIndex, value);
|
||||
OnCommonChange(); // Assure that the cell or column gets repainted and autosized if needed
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns the current DataGridView EditingControl as a DataGridViewNumericUpDownEditingControl control
|
||||
/// </summary>
|
||||
private DataGridViewNumericUpDownEditingControl EditingNumericUpDown
|
||||
{
|
||||
get {
|
||||
return DataGridView.EditingControl as DataGridViewNumericUpDownEditingControl;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Define the type of the cell's editing control
|
||||
/// </summary>
|
||||
public override Type EditType
|
||||
{
|
||||
get {
|
||||
return defaultEditType; // the type is DataGridViewNumericUpDownEditingControl
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// The Increment property replicates the one from the NumericUpDown control
|
||||
/// </summary>
|
||||
public decimal Increment
|
||||
{
|
||||
get {
|
||||
return increment;
|
||||
}
|
||||
|
||||
set {
|
||||
if (value < (decimal)0.0)
|
||||
{
|
||||
throw new ArgumentOutOfRangeException("The Increment property cannot be smaller than 0.");
|
||||
}
|
||||
SetIncrement(RowIndex, value);
|
||||
// No call to OnCommonChange is needed since the increment value does not affect the rendering of the cell.
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// The Maximum property replicates the one from the NumericUpDown control
|
||||
/// </summary>
|
||||
public decimal Maximum
|
||||
{
|
||||
get {
|
||||
return maximum;
|
||||
}
|
||||
|
||||
set {
|
||||
if (maximum != value)
|
||||
{
|
||||
SetMaximum(RowIndex, value);
|
||||
OnCommonChange();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// The Minimum property replicates the one from the NumericUpDown control
|
||||
/// </summary>
|
||||
public decimal Minimum
|
||||
{
|
||||
get {
|
||||
return minimum;
|
||||
}
|
||||
|
||||
set {
|
||||
if (minimum != value)
|
||||
{
|
||||
SetMinimum(RowIndex, value);
|
||||
OnCommonChange();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// The ThousandsSeparator property replicates the one from the NumericUpDown control
|
||||
/// </summary>
|
||||
[
|
||||
DefaultValue(DATAGRIDVIEWNUMERICUPDOWNCELL_defaultThousandsSeparator)
|
||||
]
|
||||
public bool ThousandsSeparator
|
||||
{
|
||||
get {
|
||||
return thousandsSeparator;
|
||||
}
|
||||
|
||||
set {
|
||||
if (thousandsSeparator != value)
|
||||
{
|
||||
SetThousandsSeparator(RowIndex, value);
|
||||
OnCommonChange();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns the type of the cell's Value property
|
||||
/// </summary>
|
||||
public override Type ValueType
|
||||
{
|
||||
get {
|
||||
Type valueType = base.ValueType;
|
||||
if (valueType != null)
|
||||
{
|
||||
return valueType;
|
||||
}
|
||||
return defaultValueType;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Clones a DataGridViewNumericUpDownCell cell, copies all the custom properties.
|
||||
/// </summary>
|
||||
public override object Clone()
|
||||
{
|
||||
DataGridViewNumericUpDownCell dataGridViewCell = base.Clone() as DataGridViewNumericUpDownCell;
|
||||
if (dataGridViewCell != null)
|
||||
{
|
||||
dataGridViewCell.DecimalPlaces = DecimalPlaces;
|
||||
dataGridViewCell.Increment = Increment;
|
||||
dataGridViewCell.Maximum = Maximum;
|
||||
dataGridViewCell.Minimum = Minimum;
|
||||
dataGridViewCell.ThousandsSeparator = ThousandsSeparator;
|
||||
}
|
||||
return dataGridViewCell;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns the provided value constrained to be within the min and max.
|
||||
/// </summary>
|
||||
private decimal Constrain(decimal value)
|
||||
{
|
||||
Debug.Assert(minimum <= maximum);
|
||||
if (value < minimum)
|
||||
{
|
||||
value = minimum;
|
||||
}
|
||||
if (value > maximum)
|
||||
{
|
||||
value = maximum;
|
||||
}
|
||||
return value;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// DetachEditingControl gets called by the DataGridView control when the editing session is ending
|
||||
/// </summary>
|
||||
[
|
||||
EditorBrowsable(EditorBrowsableState.Advanced)
|
||||
]
|
||||
public override void DetachEditingControl()
|
||||
{
|
||||
DataGridView dataGridView = DataGridView;
|
||||
if (dataGridView == null || dataGridView.EditingControl == null)
|
||||
{
|
||||
throw new InvalidOperationException("Cell is detached or its grid has no editing control.");
|
||||
}
|
||||
|
||||
NumericUpDown numericUpDown = dataGridView.EditingControl as NumericUpDown;
|
||||
if (numericUpDown != null)
|
||||
{
|
||||
// Editing controls get recycled. Indeed, when a DataGridViewNumericUpDownCell cell gets edited
|
||||
// after another DataGridViewNumericUpDownCell cell, the same editing control gets reused for
|
||||
// performance reasons (to avoid an unnecessary control destruction and creation).
|
||||
// Here the undo buffer of the TextBox inside the NumericUpDown control gets cleared to avoid
|
||||
// interferences between the editing sessions.
|
||||
TextBox textBox = numericUpDown.Controls[1] as TextBox;
|
||||
if (textBox != null)
|
||||
{
|
||||
textBox.ClearUndo();
|
||||
}
|
||||
}
|
||||
|
||||
base.DetachEditingControl();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Adjusts the location and size of the editing control given the alignment characteristics of the cell
|
||||
/// </summary>
|
||||
private Rectangle GetAdjustedEditingControlBounds(Rectangle editingControlBounds, DataGridViewCellStyle cellStyle)
|
||||
{
|
||||
// Add a 1 pixel padding on the left and right of the editing control
|
||||
editingControlBounds.X += 1;
|
||||
editingControlBounds.Width = Math.Max(0, editingControlBounds.Width - 2);
|
||||
|
||||
// Adjust the vertical location of the editing control:
|
||||
int preferredHeight = cellStyle.Font.Height + 3;
|
||||
if (preferredHeight < editingControlBounds.Height)
|
||||
{
|
||||
switch (cellStyle.Alignment)
|
||||
{
|
||||
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;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Customized implementation of the GetErrorIconBounds function in order to draw the potential
|
||||
/// error icon next to the up/down buttons and not on top of them.
|
||||
/// </summary>
|
||||
protected override Rectangle GetErrorIconBounds(Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex)
|
||||
{
|
||||
const int ButtonsWidth = 16;
|
||||
|
||||
Rectangle errorIconBounds = base.GetErrorIconBounds(graphics, cellStyle, rowIndex);
|
||||
if (DataGridView.RightToLeft == RightToLeft.Yes)
|
||||
{
|
||||
errorIconBounds.X = errorIconBounds.Left + ButtonsWidth;
|
||||
}
|
||||
else
|
||||
{
|
||||
errorIconBounds.X = errorIconBounds.Left - ButtonsWidth;
|
||||
}
|
||||
return errorIconBounds;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Customized implementation of the GetFormattedValue function in order to include the decimal and thousand separator
|
||||
/// characters in the formatted representation of the cell value.
|
||||
/// </summary>
|
||||
protected override object GetFormattedValue(object value,
|
||||
int rowIndex,
|
||||
ref DataGridViewCellStyle cellStyle,
|
||||
TypeConverter valueTypeConverter,
|
||||
TypeConverter formattedValueTypeConverter,
|
||||
DataGridViewDataErrorContexts context)
|
||||
{
|
||||
// By default, the base implementation converts the Decimal 1234.5 into the string "1234.5"
|
||||
object formattedValue = base.GetFormattedValue(value, rowIndex, ref cellStyle, valueTypeConverter, formattedValueTypeConverter, context);
|
||||
string formattedNumber = formattedValue as string;
|
||||
if (!string.IsNullOrEmpty(formattedNumber) && value != null)
|
||||
{
|
||||
decimal unformattedDecimal = Convert.ToDecimal(value);
|
||||
decimal formattedDecimal = Convert.ToDecimal(formattedNumber);
|
||||
if (unformattedDecimal == formattedDecimal)
|
||||
{
|
||||
// The base implementation of GetFormattedValue (which triggers the CellFormatting event) did nothing else than
|
||||
// the typical 1234.5 to "1234.5" conversion. But depending on the values of ThousandsSeparator and DecimalPlaces,
|
||||
// this may not be the actual string displayed. The real formatted value may be "1,234.500"
|
||||
return formattedDecimal.ToString((ThousandsSeparator ? "N" : "F") + DecimalPlaces.ToString());
|
||||
}
|
||||
}
|
||||
return formattedValue;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Custom implementation of the GetPreferredSize function. This implementation uses the preferred size of the base
|
||||
/// DataGridViewTextBoxCell cell and adds room for the up/down buttons.
|
||||
/// </summary>
|
||||
protected override Size GetPreferredSize(Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex, Size constraintSize)
|
||||
{
|
||||
if (DataGridView == null)
|
||||
{
|
||||
return new Size(-1, -1);
|
||||
}
|
||||
|
||||
Size preferredSize = base.GetPreferredSize(graphics, cellStyle, rowIndex, constraintSize);
|
||||
if (constraintSize.Width == 0)
|
||||
{
|
||||
const int ButtonsWidth = 16; // Account for the width of the up/down buttons.
|
||||
const int ButtonMargin = 8; // Account for some blank pixels between the text and buttons.
|
||||
preferredSize.Width += ButtonsWidth + ButtonMargin;
|
||||
}
|
||||
return preferredSize;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Custom implementation of the InitializeEditingControl function. This function is called by the DataGridView control
|
||||
/// at the beginning of an editing session. It makes sure that the properties of the NumericUpDown editing control are
|
||||
/// set according to the cell properties.
|
||||
/// </summary>
|
||||
public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle)
|
||||
{
|
||||
base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle);
|
||||
NumericUpDown numericUpDown = DataGridView.EditingControl as NumericUpDown;
|
||||
if (numericUpDown != null)
|
||||
{
|
||||
numericUpDown.BorderStyle = BorderStyle.None;
|
||||
numericUpDown.DecimalPlaces = DecimalPlaces;
|
||||
numericUpDown.Increment = Increment;
|
||||
numericUpDown.Maximum = Maximum;
|
||||
numericUpDown.Minimum = Minimum;
|
||||
numericUpDown.ThousandsSeparator = ThousandsSeparator;
|
||||
string initialFormattedValueStr = initialFormattedValue as string;
|
||||
if (initialFormattedValueStr == null)
|
||||
{
|
||||
numericUpDown.Text = string.Empty;
|
||||
}
|
||||
else
|
||||
{
|
||||
numericUpDown.Text = initialFormattedValueStr;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Custom implementation of the KeyEntersEditMode function. This function is called by the DataGridView control
|
||||
/// to decide whether a keystroke must start an editing session or not. In this case, a new session is started when
|
||||
/// a digit or negative sign key is hit.
|
||||
/// </summary>
|
||||
public override bool KeyEntersEditMode(KeyEventArgs e)
|
||||
{
|
||||
NumberFormatInfo numberFormatInfo = CultureInfo.CurrentCulture.NumberFormat;
|
||||
Keys negativeSignKey = Keys.None;
|
||||
string negativeSignStr = numberFormatInfo.NegativeSign;
|
||||
if (!string.IsNullOrEmpty(negativeSignStr) && negativeSignStr.Length == 1)
|
||||
{
|
||||
negativeSignKey = (Keys)VkKeyScan(negativeSignStr[0]);
|
||||
}
|
||||
|
||||
if ((char.IsDigit((char)e.KeyCode) ||
|
||||
e.KeyCode >= Keys.NumPad0 && e.KeyCode <= Keys.NumPad9 ||
|
||||
negativeSignKey == e.KeyCode ||
|
||||
Keys.Subtract == e.KeyCode) &&
|
||||
!e.Shift && !e.Alt && !e.Control)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Called when a cell characteristic that affects its rendering and/or preferred size has changed.
|
||||
/// This implementation only takes care of repainting the cells. The DataGridView's autosizing methods
|
||||
/// also need to be called in cases where some grid elements autosize.
|
||||
/// </summary>
|
||||
private void OnCommonChange()
|
||||
{
|
||||
if (DataGridView != null && !DataGridView.IsDisposed && !DataGridView.Disposing)
|
||||
{
|
||||
if (RowIndex == -1)
|
||||
{
|
||||
// Invalidate and autosize column
|
||||
DataGridView.InvalidateColumn(ColumnIndex);
|
||||
|
||||
// TODO: Add code to autosize the cell's column, the rows, the column headers
|
||||
// and the row headers depending on their autosize settings.
|
||||
// The DataGridView control does not expose a public method that takes care of this.
|
||||
}
|
||||
else
|
||||
{
|
||||
// The DataGridView control exposes a public method called UpdateCellValue
|
||||
// that invalidates the cell so that it gets repainted and also triggers all
|
||||
// the necessary autosizing: the cell's column and/or row, the column headers
|
||||
// and the row headers are autosized depending on their autosize settings.
|
||||
DataGridView.UpdateCellValue(ColumnIndex, RowIndex);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Determines whether this cell, at the given row index, shows the grid's editing control or not.
|
||||
/// The row index needs to be provided as a parameter because this cell may be shared among multiple rows.
|
||||
/// </summary>
|
||||
private bool OwnsEditingNumericUpDown(int rowIndex)
|
||||
{
|
||||
if (rowIndex == -1 || DataGridView == null)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
DataGridViewNumericUpDownEditingControl numericUpDownEditingControl = DataGridView.EditingControl as DataGridViewNumericUpDownEditingControl;
|
||||
return numericUpDownEditingControl != null && rowIndex == ((IDataGridViewEditingControl)numericUpDownEditingControl).EditingControlRowIndex;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Custom paints the cell. The base implementation of the DataGridViewTextBoxCell type is called first,
|
||||
/// dropping the icon error and content foreground parts. Those two parts are painted by this custom implementation.
|
||||
/// In this sample, the non-edited NumericUpDown control is painted by using a call to Control.DrawToBitmap. This is
|
||||
/// an easy solution for painting controls but it's not necessarily the most performant. An alternative would be to paint
|
||||
/// the NumericUpDown control piece by piece (text and up/down buttons).
|
||||
/// </summary>
|
||||
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)
|
||||
{
|
||||
if (DataGridView == null)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
// First paint the borders and background of the cell.
|
||||
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle,
|
||||
paintParts & ~(DataGridViewPaintParts.ErrorIcon | DataGridViewPaintParts.ContentForeground));
|
||||
|
||||
Point ptCurrentCell = DataGridView.CurrentCellAddress;
|
||||
bool cellCurrent = ptCurrentCell.X == ColumnIndex && ptCurrentCell.Y == rowIndex;
|
||||
bool cellEdited = cellCurrent && DataGridView.EditingControl != null;
|
||||
|
||||
// If the cell is in editing mode, there is nothing else to paint
|
||||
if (!cellEdited)
|
||||
{
|
||||
if (PartPainted(paintParts, DataGridViewPaintParts.ContentForeground))
|
||||
{
|
||||
// Paint a NumericUpDown control
|
||||
// Take the borders into account
|
||||
Rectangle borderWidths = BorderWidths(advancedBorderStyle);
|
||||
Rectangle valBounds = cellBounds;
|
||||
valBounds.Offset(borderWidths.X, borderWidths.Y);
|
||||
valBounds.Width -= borderWidths.Right;
|
||||
valBounds.Height -= borderWidths.Bottom;
|
||||
// Also take the padding into account
|
||||
if (cellStyle.Padding != Padding.Empty)
|
||||
{
|
||||
if (DataGridView.RightToLeft == RightToLeft.Yes)
|
||||
{
|
||||
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;
|
||||
}
|
||||
// Determine the NumericUpDown control location
|
||||
valBounds = GetAdjustedEditingControlBounds(valBounds, cellStyle);
|
||||
|
||||
bool cellSelected = (cellState & DataGridViewElementStates.Selected) != 0;
|
||||
|
||||
if (renderingBitmap.Width < valBounds.Width ||
|
||||
renderingBitmap.Height < valBounds.Height)
|
||||
{
|
||||
// The static bitmap is too small, a bigger one needs to be allocated.
|
||||
renderingBitmap.Dispose();
|
||||
renderingBitmap = new Bitmap(valBounds.Width, valBounds.Height);
|
||||
}
|
||||
// Make sure the NumericUpDown control is parented to a visible control
|
||||
if (paintingNumericUpDown.Parent == null || !paintingNumericUpDown.Parent.Visible)
|
||||
{
|
||||
paintingNumericUpDown.Parent = DataGridView;
|
||||
}
|
||||
// Set all the relevant properties
|
||||
paintingNumericUpDown.TextAlign = TranslateAlignment(cellStyle.Alignment);
|
||||
paintingNumericUpDown.DecimalPlaces = DecimalPlaces;
|
||||
paintingNumericUpDown.ThousandsSeparator = ThousandsSeparator;
|
||||
paintingNumericUpDown.Font = cellStyle.Font;
|
||||
paintingNumericUpDown.Width = valBounds.Width;
|
||||
paintingNumericUpDown.Height = valBounds.Height;
|
||||
paintingNumericUpDown.RightToLeft = DataGridView.RightToLeft;
|
||||
paintingNumericUpDown.Location = new Point(0, -paintingNumericUpDown.Height - 100);
|
||||
paintingNumericUpDown.Text = formattedValue as string;
|
||||
|
||||
Color backColor;
|
||||
if (PartPainted(paintParts, DataGridViewPaintParts.SelectionBackground) && cellSelected)
|
||||
{
|
||||
backColor = cellStyle.SelectionBackColor;
|
||||
}
|
||||
else
|
||||
{
|
||||
backColor = cellStyle.BackColor;
|
||||
}
|
||||
if (PartPainted(paintParts, DataGridViewPaintParts.Background))
|
||||
{
|
||||
if (backColor.A < 255)
|
||||
{
|
||||
// The NumericUpDown control does not support transparent back colors
|
||||
backColor = Color.FromArgb(255, backColor);
|
||||
}
|
||||
paintingNumericUpDown.BackColor = backColor;
|
||||
}
|
||||
// Finally paint the NumericUpDown control
|
||||
Rectangle srcRect = new Rectangle(0, 0, valBounds.Width, valBounds.Height);
|
||||
if (srcRect.Width > 0 && srcRect.Height > 0)
|
||||
{
|
||||
paintingNumericUpDown.DrawToBitmap(renderingBitmap, srcRect);
|
||||
graphics.DrawImage(renderingBitmap, new Rectangle(valBounds.Location, valBounds.Size),
|
||||
srcRect, GraphicsUnit.Pixel);
|
||||
}
|
||||
}
|
||||
if (PartPainted(paintParts, DataGridViewPaintParts.ErrorIcon))
|
||||
{
|
||||
// Paint the potential error icon on top of the NumericUpDown control
|
||||
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText,
|
||||
cellStyle, advancedBorderStyle, DataGridViewPaintParts.ErrorIcon);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Little utility function called by the Paint function to see if a particular part needs to be painted.
|
||||
/// </summary>
|
||||
private static bool PartPainted(DataGridViewPaintParts paintParts, DataGridViewPaintParts paintPart)
|
||||
{
|
||||
return (paintParts & paintPart) != 0;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Custom implementation of the PositionEditingControl method called by the DataGridView control when it
|
||||
/// needs to relocate and/or resize the editing control.
|
||||
/// </summary>
|
||||
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);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Utility function that sets a new value for the DecimalPlaces property of the cell. This function is used by
|
||||
/// the cell and column DecimalPlaces property. The column uses this method instead of the DecimalPlaces
|
||||
/// property for performance reasons. This way the column can invalidate the entire column at once instead of
|
||||
/// invalidating each cell of the column individually. A row index needs to be provided as a parameter because
|
||||
/// this cell may be shared among multiple rows.
|
||||
/// </summary>
|
||||
internal void SetDecimalPlaces(int rowIndex, int value)
|
||||
{
|
||||
Debug.Assert(value >= 0 && value <= 99);
|
||||
decimalPlaces = value;
|
||||
if (OwnsEditingNumericUpDown(rowIndex))
|
||||
{
|
||||
EditingNumericUpDown.DecimalPlaces = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// Utility function that sets a new value for the Increment property of the cell. This function is used by
|
||||
/// the cell and column Increment property. A row index needs to be provided as a parameter because
|
||||
/// this cell may be shared among multiple rows.
|
||||
internal void SetIncrement(int rowIndex, decimal value)
|
||||
{
|
||||
Debug.Assert(value >= (decimal)0.0);
|
||||
increment = value;
|
||||
if (OwnsEditingNumericUpDown(rowIndex))
|
||||
{
|
||||
EditingNumericUpDown.Increment = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// Utility function that sets a new value for the Maximum property of the cell. This function is used by
|
||||
/// the cell and column Maximum property. The column uses this method instead of the Maximum
|
||||
/// property for performance reasons. This way the column can invalidate the entire column at once instead of
|
||||
/// invalidating each cell of the column individually. A row index needs to be provided as a parameter because
|
||||
/// this cell may be shared among multiple rows.
|
||||
internal void SetMaximum(int rowIndex, decimal value)
|
||||
{
|
||||
maximum = value;
|
||||
if (minimum > maximum)
|
||||
{
|
||||
minimum = maximum;
|
||||
}
|
||||
object cellValue = GetValue(rowIndex);
|
||||
if (cellValue != null)
|
||||
{
|
||||
decimal currentValue = Convert.ToDecimal(cellValue);
|
||||
decimal constrainedValue = Constrain(currentValue);
|
||||
if (constrainedValue != currentValue)
|
||||
{
|
||||
SetValue(rowIndex, constrainedValue);
|
||||
}
|
||||
}
|
||||
Debug.Assert(maximum == value);
|
||||
if (OwnsEditingNumericUpDown(rowIndex))
|
||||
{
|
||||
EditingNumericUpDown.Maximum = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// Utility function that sets a new value for the Minimum property of the cell. This function is used by
|
||||
/// the cell and column Minimum property. The column uses this method instead of the Minimum
|
||||
/// property for performance reasons. This way the column can invalidate the entire column at once instead of
|
||||
/// invalidating each cell of the column individually. A row index needs to be provided as a parameter because
|
||||
/// this cell may be shared among multiple rows.
|
||||
internal void SetMinimum(int rowIndex, decimal value)
|
||||
{
|
||||
minimum = value;
|
||||
if (minimum > maximum)
|
||||
{
|
||||
maximum = value;
|
||||
}
|
||||
object cellValue = GetValue(rowIndex);
|
||||
if (cellValue != null)
|
||||
{
|
||||
decimal currentValue = Convert.ToDecimal(cellValue);
|
||||
decimal constrainedValue = Constrain(currentValue);
|
||||
if (constrainedValue != currentValue)
|
||||
{
|
||||
SetValue(rowIndex, constrainedValue);
|
||||
}
|
||||
}
|
||||
Debug.Assert(minimum == value);
|
||||
if (OwnsEditingNumericUpDown(rowIndex))
|
||||
{
|
||||
EditingNumericUpDown.Minimum = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// Utility function that sets a new value for the ThousandsSeparator property of the cell. This function is used by
|
||||
/// the cell and column ThousandsSeparator property. The column uses this method instead of the ThousandsSeparator
|
||||
/// property for performance reasons. This way the column can invalidate the entire column at once instead of
|
||||
/// invalidating each cell of the column individually. A row index needs to be provided as a parameter because
|
||||
/// this cell may be shared among multiple rows.
|
||||
internal void SetThousandsSeparator(int rowIndex, bool value)
|
||||
{
|
||||
thousandsSeparator = value;
|
||||
if (OwnsEditingNumericUpDown(rowIndex))
|
||||
{
|
||||
EditingNumericUpDown.ThousandsSeparator = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns a standard textual representation of the cell.
|
||||
/// </summary>
|
||||
public override string ToString()
|
||||
{
|
||||
return "DataGridViewNumericUpDownCell { ColumnIndex=" + ColumnIndex.ToString(CultureInfo.CurrentCulture) + ", RowIndex=" + RowIndex.ToString(CultureInfo.CurrentCulture) + " }";
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Little utility function used by both the cell and column types to translate a DataGridViewContentAlignment value into
|
||||
/// a HorizontalAlignment value.
|
||||
/// </summary>
|
||||
internal static HorizontalAlignment TranslateAlignment(DataGridViewContentAlignment align)
|
||||
{
|
||||
if ((align & anyRight) != 0)
|
||||
{
|
||||
return HorizontalAlignment.Right;
|
||||
}
|
||||
else if ((align & anyCenter) != 0)
|
||||
{
|
||||
return HorizontalAlignment.Center;
|
||||
}
|
||||
else
|
||||
{
|
||||
return HorizontalAlignment.Left;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,304 @@
|
|||
using System;
|
||||
using System.ComponentModel;
|
||||
using System.Globalization;
|
||||
using System.Text;
|
||||
using System.Windows.Forms;
|
||||
|
||||
namespace GradeCalc
|
||||
{
|
||||
/// <summary>
|
||||
/// Custom column type dedicated to the DataGridViewNumericUpDownCell cell type.
|
||||
/// </summary>
|
||||
public class DataGridViewNumericUpDownColumn : DataGridViewColumn
|
||||
{
|
||||
/// <summary>
|
||||
/// Constructor for the DataGridViewNumericUpDownColumn class.
|
||||
/// </summary>
|
||||
public DataGridViewNumericUpDownColumn() : base(new DataGridViewNumericUpDownCell())
|
||||
{
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Represents the implicit cell that gets cloned when adding rows to the grid.
|
||||
/// </summary>
|
||||
[
|
||||
Browsable(false),
|
||||
DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)
|
||||
]
|
||||
public override DataGridViewCell CellTemplate
|
||||
{
|
||||
get {
|
||||
return base.CellTemplate;
|
||||
}
|
||||
set {
|
||||
DataGridViewNumericUpDownCell dataGridViewNumericUpDownCell = value as DataGridViewNumericUpDownCell;
|
||||
if (value != null && dataGridViewNumericUpDownCell == null)
|
||||
{
|
||||
throw new InvalidCastException("Value provided for CellTemplate must be of type DataGridViewNumericUpDownElements.DataGridViewNumericUpDownCell or derive from it.");
|
||||
}
|
||||
base.CellTemplate = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Replicates the DecimalPlaces property of the DataGridViewNumericUpDownCell cell type.
|
||||
/// </summary>
|
||||
[
|
||||
Category("Appearance"),
|
||||
DefaultValue(DataGridViewNumericUpDownCell.DATAGRIDVIEWNUMERICUPDOWNCELL_defaultDecimalPlaces),
|
||||
Description("Indicates the number of decimal places to display.")
|
||||
]
|
||||
public int DecimalPlaces
|
||||
{
|
||||
get {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
return NumericUpDownCellTemplate.DecimalPlaces;
|
||||
}
|
||||
set {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
// Update the template cell so that subsequent cloned cells use the new value.
|
||||
NumericUpDownCellTemplate.DecimalPlaces = value;
|
||||
if (DataGridView != null)
|
||||
{
|
||||
// Update all the existing DataGridViewNumericUpDownCell cells in the column accordingly.
|
||||
DataGridViewRowCollection dataGridViewRows = DataGridView.Rows;
|
||||
int rowCount = dataGridViewRows.Count;
|
||||
for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
|
||||
{
|
||||
// Be careful not to unshare rows unnecessarily.
|
||||
// This could have severe performance repercussions.
|
||||
DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
|
||||
DataGridViewNumericUpDownCell dataGridViewCell = dataGridViewRow.Cells[Index] as DataGridViewNumericUpDownCell;
|
||||
if (dataGridViewCell != null)
|
||||
{
|
||||
// Call the internal SetDecimalPlaces method instead of the property to avoid invalidation
|
||||
// of each cell. The whole column is invalidated later in a single operation for better performance.
|
||||
dataGridViewCell.SetDecimalPlaces(rowIndex, value);
|
||||
}
|
||||
}
|
||||
DataGridView.InvalidateColumn(Index);
|
||||
// TODO: Call the grid's autosizing methods to autosize the column, rows, column headers / row headers as needed.
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Replicates the Increment property of the DataGridViewNumericUpDownCell cell type.
|
||||
/// </summary>
|
||||
[
|
||||
Category("Data"),
|
||||
Description("Indicates the amount to increment or decrement on each button click.")
|
||||
]
|
||||
public decimal Increment
|
||||
{
|
||||
get {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
return NumericUpDownCellTemplate.Increment;
|
||||
}
|
||||
set {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
NumericUpDownCellTemplate.Increment = value;
|
||||
if (DataGridView != null)
|
||||
{
|
||||
DataGridViewRowCollection dataGridViewRows = DataGridView.Rows;
|
||||
int rowCount = dataGridViewRows.Count;
|
||||
for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
|
||||
{
|
||||
DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
|
||||
DataGridViewNumericUpDownCell dataGridViewCell = dataGridViewRow.Cells[Index] as DataGridViewNumericUpDownCell;
|
||||
if (dataGridViewCell != null)
|
||||
{
|
||||
dataGridViewCell.SetIncrement(rowIndex, value);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Indicates whether the Increment property should be persisted.
|
||||
private bool ShouldSerializeIncrement()
|
||||
{
|
||||
return !Increment.Equals(DataGridViewNumericUpDownCell.DATAGRIDVIEWNUMERICUPDOWNCELL_defaultIncrement);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Replicates the Maximum property of the DataGridViewNumericUpDownCell cell type.
|
||||
/// </summary>
|
||||
[
|
||||
Category("Data"),
|
||||
Description("Indicates the maximum value for the numeric up-down cells."),
|
||||
RefreshProperties(RefreshProperties.All)
|
||||
]
|
||||
public decimal Maximum
|
||||
{
|
||||
get {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
return NumericUpDownCellTemplate.Maximum;
|
||||
}
|
||||
set {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
NumericUpDownCellTemplate.Maximum = value;
|
||||
if (DataGridView != null)
|
||||
{
|
||||
DataGridViewRowCollection dataGridViewRows = DataGridView.Rows;
|
||||
int rowCount = dataGridViewRows.Count;
|
||||
for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
|
||||
{
|
||||
DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
|
||||
DataGridViewNumericUpDownCell dataGridViewCell = dataGridViewRow.Cells[Index] as DataGridViewNumericUpDownCell;
|
||||
if (dataGridViewCell != null)
|
||||
{
|
||||
dataGridViewCell.SetMaximum(rowIndex, value);
|
||||
}
|
||||
}
|
||||
DataGridView.InvalidateColumn(Index);
|
||||
// TODO: This column and/or grid rows may need to be autosized depending on their
|
||||
// autosize settings. Call the autosizing methods to autosize the column, rows,
|
||||
// column headers / row headers as needed.
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Indicates whether the Maximum property should be persisted.
|
||||
private bool ShouldSerializeMaximum()
|
||||
{
|
||||
return !Maximum.Equals(DataGridViewNumericUpDownCell.DATAGRIDVIEWNUMERICUPDOWNCELL_defaultMaximum);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Replicates the Minimum property of the DataGridViewNumericUpDownCell cell type.
|
||||
/// </summary>
|
||||
[
|
||||
Category("Data"),
|
||||
Description("Indicates the minimum value for the numeric up-down cells."),
|
||||
RefreshProperties(RefreshProperties.All)
|
||||
]
|
||||
public decimal Minimum
|
||||
{
|
||||
get {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
return NumericUpDownCellTemplate.Minimum;
|
||||
}
|
||||
set {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
NumericUpDownCellTemplate.Minimum = value;
|
||||
if (DataGridView != null)
|
||||
{
|
||||
DataGridViewRowCollection dataGridViewRows = DataGridView.Rows;
|
||||
int rowCount = dataGridViewRows.Count;
|
||||
for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
|
||||
{
|
||||
DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
|
||||
DataGridViewNumericUpDownCell dataGridViewCell = dataGridViewRow.Cells[Index] as DataGridViewNumericUpDownCell;
|
||||
if (dataGridViewCell != null)
|
||||
{
|
||||
dataGridViewCell.SetMinimum(rowIndex, value);
|
||||
}
|
||||
}
|
||||
DataGridView.InvalidateColumn(Index);
|
||||
// TODO: This column and/or grid rows may need to be autosized depending on their
|
||||
// autosize settings. Call the autosizing methods to autosize the column, rows,
|
||||
// column headers / row headers as needed.
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Indicates whether the Maximum property should be persisted.
|
||||
private bool ShouldSerializeMinimum()
|
||||
{
|
||||
return !Minimum.Equals(DataGridViewNumericUpDownCell.DATAGRIDVIEWNUMERICUPDOWNCELL_defaultMinimum);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Replicates the ThousandsSeparator property of the DataGridViewNumericUpDownCell cell type.
|
||||
/// </summary>
|
||||
[
|
||||
Category("Data"),
|
||||
DefaultValue(DataGridViewNumericUpDownCell.DATAGRIDVIEWNUMERICUPDOWNCELL_defaultThousandsSeparator),
|
||||
Description("Indicates whether the thousands separator will be inserted between every three decimal digits.")
|
||||
]
|
||||
public bool ThousandsSeparator
|
||||
{
|
||||
get {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
return NumericUpDownCellTemplate.ThousandsSeparator;
|
||||
}
|
||||
set {
|
||||
if (NumericUpDownCellTemplate == null)
|
||||
{
|
||||
throw new InvalidOperationException("Operation cannot be completed because this DataGridViewColumn does not have a CellTemplate.");
|
||||
}
|
||||
NumericUpDownCellTemplate.ThousandsSeparator = value;
|
||||
if (DataGridView != null)
|
||||
{
|
||||
DataGridViewRowCollection dataGridViewRows = DataGridView.Rows;
|
||||
int rowCount = dataGridViewRows.Count;
|
||||
for (int rowIndex = 0; rowIndex < rowCount; rowIndex++)
|
||||
{
|
||||
DataGridViewRow dataGridViewRow = dataGridViewRows.SharedRow(rowIndex);
|
||||
DataGridViewNumericUpDownCell dataGridViewCell = dataGridViewRow.Cells[Index] as DataGridViewNumericUpDownCell;
|
||||
if (dataGridViewCell != null)
|
||||
{
|
||||
dataGridViewCell.SetThousandsSeparator(rowIndex, value);
|
||||
}
|
||||
}
|
||||
DataGridView.InvalidateColumn(Index);
|
||||
// TODO: This column and/or grid rows may need to be autosized depending on their
|
||||
// autosize settings. Call the autosizing methods to autosize the column, rows,
|
||||
// column headers / row headers as needed.
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Small utility function that returns the template cell as a DataGridViewNumericUpDownCell
|
||||
/// </summary>
|
||||
private DataGridViewNumericUpDownCell NumericUpDownCellTemplate
|
||||
{
|
||||
get {
|
||||
return (DataGridViewNumericUpDownCell)CellTemplate;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns a standard compact string representation of the column.
|
||||
/// </summary>
|
||||
public override string ToString()
|
||||
{
|
||||
StringBuilder sb = new StringBuilder(100);
|
||||
sb.Append("DataGridViewNumericUpDownColumn { Name=");
|
||||
sb.Append(Name);
|
||||
sb.Append(", Index=");
|
||||
sb.Append(Index.ToString(CultureInfo.CurrentCulture));
|
||||
sb.Append(" }");
|
||||
return sb.ToString();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,353 @@
|
|||
using System;
|
||||
using System.Drawing;
|
||||
using System.Runtime.InteropServices;
|
||||
using System.Windows.Forms;
|
||||
|
||||
namespace GradeCalc
|
||||
{
|
||||
/// <summary>
|
||||
/// Defines the editing control for the DataGridViewNumericUpDownCell custom cell type.
|
||||
/// </summary>
|
||||
internal class DataGridViewNumericUpDownEditingControl : NumericUpDown, IDataGridViewEditingControl
|
||||
{
|
||||
// Needed to forward keyboard messages to the child TextBox control.
|
||||
[DllImport("USER32.DLL", CharSet = CharSet.Auto)]
|
||||
private static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);
|
||||
|
||||
// The grid that owns this editing control
|
||||
private DataGridView dataGridView;
|
||||
|
||||
// Stores whether the editing control's value has changed or not
|
||||
private bool valueChanged;
|
||||
|
||||
// Stores the row index in which the editing control resides
|
||||
private int rowIndex;
|
||||
|
||||
/// <summary>
|
||||
/// Constructor of the editing control class
|
||||
/// </summary>
|
||||
public DataGridViewNumericUpDownEditingControl()
|
||||
{
|
||||
// The editing control must not be part of the tabbing loop
|
||||
TabStop = false;
|
||||
}
|
||||
|
||||
// Beginning of the IDataGridViewEditingControl interface implementation
|
||||
|
||||
/// <summary>
|
||||
/// Property which caches the grid that uses this editing control
|
||||
/// </summary>
|
||||
public virtual DataGridView EditingControlDataGridView
|
||||
{
|
||||
get {
|
||||
return dataGridView;
|
||||
}
|
||||
set {
|
||||
dataGridView = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Property which represents the current formatted value of the editing control
|
||||
/// </summary>
|
||||
public virtual object EditingControlFormattedValue
|
||||
{
|
||||
get {
|
||||
return GetEditingControlFormattedValue(DataGridViewDataErrorContexts.Formatting);
|
||||
}
|
||||
set {
|
||||
Text = (string)value;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Property which represents the row in which the editing control resides
|
||||
/// </summary>
|
||||
public virtual int EditingControlRowIndex
|
||||
{
|
||||
get {
|
||||
return rowIndex;
|
||||
}
|
||||
set {
|
||||
rowIndex = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Property which indicates whether the value of the editing control has changed or not
|
||||
/// </summary>
|
||||
public virtual bool EditingControlValueChanged
|
||||
{
|
||||
get {
|
||||
return valueChanged;
|
||||
}
|
||||
set {
|
||||
valueChanged = value;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Property which determines which cursor must be used for the editing panel,
|
||||
/// i.e. the parent of the editing control.
|
||||
/// </summary>
|
||||
public virtual Cursor EditingPanelCursor
|
||||
{
|
||||
get {
|
||||
return Cursors.Default;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Property which indicates whether the editing control needs to be repositioned
|
||||
/// when its value changes.
|
||||
/// </summary>
|
||||
public virtual bool RepositionEditingControlOnValueChange
|
||||
{
|
||||
get {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Method called by the grid before the editing control is shown so it can adapt to the
|
||||
/// provided cell style.
|
||||
/// </summary>
|
||||
public virtual void ApplyCellStyleToEditingControl(DataGridViewCellStyle dataGridViewCellStyle)
|
||||
{
|
||||
Font = dataGridViewCellStyle.Font;
|
||||
if (dataGridViewCellStyle.BackColor.A < 255)
|
||||
{
|
||||
// The NumericUpDown control does not support transparent back colors
|
||||
Color opaqueBackColor = Color.FromArgb(255, dataGridViewCellStyle.BackColor);
|
||||
BackColor = opaqueBackColor;
|
||||
dataGridView.EditingPanel.BackColor = opaqueBackColor;
|
||||
}
|
||||
else
|
||||
{
|
||||
BackColor = dataGridViewCellStyle.BackColor;
|
||||
}
|
||||
ForeColor = dataGridViewCellStyle.ForeColor;
|
||||
TextAlign = DataGridViewNumericUpDownCell.TranslateAlignment(dataGridViewCellStyle.Alignment);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Method called by the grid on keystrokes to determine if the editing control is
|
||||
/// interested in the key or not.
|
||||
/// </summary>
|
||||
public virtual bool EditingControlWantsInputKey(Keys keyData, bool dataGridViewWantsInputKey)
|
||||
{
|
||||
switch (keyData & Keys.KeyCode)
|
||||
{
|
||||
case Keys.Right:
|
||||
{
|
||||
TextBox textBox = Controls[1] as TextBox;
|
||||
if (textBox != null)
|
||||
{
|
||||
// If the end of the selection is at the end of the string,
|
||||
// let the DataGridView treat the key message
|
||||
if (RightToLeft == RightToLeft.No && !(textBox.SelectionLength == 0 && textBox.SelectionStart == textBox.Text.Length) ||
|
||||
RightToLeft == RightToLeft.Yes && !(textBox.SelectionLength == 0 && textBox.SelectionStart == 0))
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case Keys.Left:
|
||||
{
|
||||
TextBox textBox = Controls[1] as TextBox;
|
||||
if (textBox != null)
|
||||
{
|
||||
// If the end of the selection is at the begining of the string
|
||||
// or if the entire text is selected and we did not start editing,
|
||||
// send this character to the dataGridView, else process the key message
|
||||
if (RightToLeft == RightToLeft.No && !(textBox.SelectionLength == 0 && textBox.SelectionStart == 0) ||
|
||||
RightToLeft == RightToLeft.Yes && !(textBox.SelectionLength == 0 && textBox.SelectionStart == textBox.Text.Length))
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case Keys.Down:
|
||||
// If the current value hasn't reached its minimum yet, handle the key. Otherwise let
|
||||
// the grid handle it.
|
||||
if (Value > Minimum)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
break;
|
||||
|
||||
case Keys.Up:
|
||||
// If the current value hasn't reached its maximum yet, handle the key. Otherwise let
|
||||
// the grid handle it.
|
||||
if (Value < Maximum)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
break;
|
||||
|
||||
case Keys.Home:
|
||||
case Keys.End:
|
||||
{
|
||||
// Let the grid handle the key if the entire text is selected.
|
||||
TextBox textBox = Controls[1] as TextBox;
|
||||
if (textBox != null)
|
||||
{
|
||||
if (textBox.SelectionLength != textBox.Text.Length)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case Keys.Delete:
|
||||
{
|
||||
// Let the grid handle the key if the carret is at the end of the text.
|
||||
TextBox textBox = Controls[1] as TextBox;
|
||||
if (textBox != null)
|
||||
{
|
||||
if (textBox.SelectionLength > 0 ||
|
||||
textBox.SelectionStart < textBox.Text.Length)
|
||||
{
|
||||
return true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
return !dataGridViewWantsInputKey;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Returns the current value of the editing control.
|
||||
/// </summary>
|
||||
public virtual object GetEditingControlFormattedValue(DataGridViewDataErrorContexts context)
|
||||
{
|
||||
bool userEdit = UserEdit;
|
||||
try
|
||||
{
|
||||
// Prevent the Value from being set to Maximum or Minimum when the cell is being painted.
|
||||
UserEdit = (context & DataGridViewDataErrorContexts.Display) == 0;
|
||||
return Value.ToString((ThousandsSeparator ? "N" : "F") + DecimalPlaces.ToString());
|
||||
}
|
||||
finally
|
||||
{
|
||||
UserEdit = userEdit;
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Called by the grid to give the editing control a chance to prepare itself for
|
||||
/// the editing session.
|
||||
/// </summary>
|
||||
public virtual void PrepareEditingControlForEdit(bool selectAll)
|
||||
{
|
||||
TextBox textBox = Controls[1] as TextBox;
|
||||
if (textBox != null)
|
||||
{
|
||||
if (selectAll)
|
||||
{
|
||||
textBox.SelectAll();
|
||||
}
|
||||
else
|
||||
{
|
||||
// Do not select all the text, but
|
||||
// position the caret at the end of the text
|
||||
textBox.SelectionStart = textBox.Text.Length;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// End of the IDataGridViewEditingControl interface implementation
|
||||
|
||||
/// <summary>
|
||||
/// Small utility function that updates the local dirty state and
|
||||
/// notifies the grid of the value change.
|
||||
/// </summary>
|
||||
private void NotifyDataGridViewOfValueChange()
|
||||
{
|
||||
if (!valueChanged)
|
||||
{
|
||||
valueChanged = true;
|
||||
dataGridView.NotifyCurrentCellDirty(true);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Listen to the KeyPress notification to know when the value changed, and
|
||||
/// notify the grid of the change.
|
||||
/// </summary>
|
||||
protected override void OnKeyPress(KeyPressEventArgs e)
|
||||
{
|
||||
base.OnKeyPress(e);
|
||||
|
||||
// The value changes when a digit, the decimal separator, the group separator or
|
||||
// the negative sign is pressed.
|
||||
bool notifyValueChange = false;
|
||||
if (char.IsDigit(e.KeyChar))
|
||||
{
|
||||
notifyValueChange = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
System.Globalization.NumberFormatInfo numberFormatInfo = System.Globalization.CultureInfo.CurrentCulture.NumberFormat;
|
||||
string decimalSeparatorStr = numberFormatInfo.NumberDecimalSeparator;
|
||||
string groupSeparatorStr = numberFormatInfo.NumberGroupSeparator;
|
||||
string negativeSignStr = numberFormatInfo.NegativeSign;
|
||||
if (!string.IsNullOrEmpty(decimalSeparatorStr) && decimalSeparatorStr.Length == 1)
|
||||
{
|
||||
notifyValueChange = decimalSeparatorStr[0] == e.KeyChar;
|
||||
}
|
||||
if (!notifyValueChange && !string.IsNullOrEmpty(groupSeparatorStr) && groupSeparatorStr.Length == 1)
|
||||
{
|
||||
notifyValueChange = groupSeparatorStr[0] == e.KeyChar;
|
||||
}
|
||||
if (!notifyValueChange && !string.IsNullOrEmpty(negativeSignStr) && negativeSignStr.Length == 1)
|
||||
{
|
||||
notifyValueChange = negativeSignStr[0] == e.KeyChar;
|
||||
}
|
||||
}
|
||||
|
||||
if (notifyValueChange)
|
||||
{
|
||||
// Let the DataGridView know about the value change
|
||||
NotifyDataGridViewOfValueChange();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Listen to the ValueChanged notification to forward the change to the grid.
|
||||
/// </summary>
|
||||
protected override void OnValueChanged(EventArgs e)
|
||||
{
|
||||
base.OnValueChanged(e);
|
||||
if (Focused)
|
||||
{
|
||||
// Let the DataGridView know about the value change
|
||||
NotifyDataGridViewOfValueChange();
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// A few keyboard messages need to be forwarded to the inner textbox of the
|
||||
/// NumericUpDown control so that the first character pressed appears in it.
|
||||
/// </summary>
|
||||
protected override bool ProcessKeyEventArgs(ref Message m)
|
||||
{
|
||||
TextBox textBox = Controls[1] as TextBox;
|
||||
if (textBox != null)
|
||||
{
|
||||
SendMessage(textBox.Handle, m.Msg, m.WParam, m.LParam);
|
||||
return true;
|
||||
}
|
||||
else
|
||||
{
|
||||
return base.ProcessKeyEventArgs(ref m);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -34,6 +34,7 @@
|
|||
<ItemGroup>
|
||||
<Reference Include="System" />
|
||||
<Reference Include="System.Core" />
|
||||
<Reference Include="System.Drawing" />
|
||||
<Reference Include="System.Management" />
|
||||
<Reference Include="System.Security" />
|
||||
<Reference Include="System.Windows.Forms" />
|
||||
|
|
@ -46,6 +47,11 @@
|
|||
</ItemGroup>
|
||||
<ItemGroup>
|
||||
<Compile Include="ArrayFormatter.cs" />
|
||||
<Compile Include="DataGridViewNumericUpDownCell.cs" />
|
||||
<Compile Include="DataGridViewNumericUpDownColumn.cs" />
|
||||
<Compile Include="DataGridViewNumericUpDownEditingControl.cs">
|
||||
<SubType>Component</SubType>
|
||||
</Compile>
|
||||
<Compile Include="Forms.cs" />
|
||||
<Compile Include="GenericExtensions.cs" />
|
||||
<Compile Include="HID.cs" />
|
||||
|
|
|
|||
Reference in New Issue