DataGridViewColourPicker

 

// using System; using System.ComponentModel; using System.Drawing; using System.Globalization; using System.Text; using System.Windows.Forms; namespace FarsiLibrary.Win.Controls { public class DataGridViewColourPickerCell : DataGridViewTextBoxCell { private DateTime selectedDateTime; private static Type valueType = typeof(byte); private static Type editType = typeof(DataGridViewColourPickerEditor); private StringAlignment verticalAlignment; private StringAlignment horizontalAlignment; //private FormatInfoTypes format; public override Type EditType { get { return editType; } } public override Type ValueType { get { return valueType; } } public DateTime SelectedDateTime { get { return selectedDateTime; } set { selectedDateTime = value; } } /// <summary> /// Returns the current DataGridView EditingControl /// as a DataGridViewNumericUpDownEditingControl control /// </summary> private DataGridViewColourPickerEditor EditingFADatePicker { get { return DataGridView.EditingControl as DataGridViewColourPickerEditor; } } private const int RECTCOLOR_LEFT = 0; private const int RECTCOLOR_TOP = 0; private const int RECTCOLOR_WIDTH = 20; private const int RECTTEXT_MARGIN = 0; private const int RECTTEXT_LEFT = RECTCOLOR_LEFT + RECTCOLOR_WIDTH + RECTTEXT_MARGIN; private static StringFormat sf; 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) { base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, DataGridViewPaintParts.All); if (DataGridView == null) return; if (sf == null) { sf = new StringFormat(); sf.LineAlignment = StringAlignment.Center; sf.Alignment = StringAlignment.Center; } Color BlockColor = Color.White; if (value == null || value.GetType() == typeof(DBNull)) return; BlockColor = Color.FromKnownColor((KnownColor)((byte)value)); Rectangle rec = new Rectangle(cellBounds.X + 3, cellBounds.Y + 3, cellBounds.Width - 8, cellBounds.Height - 8); graphics.FillRectangle(new SolidBrush(BlockColor), rec); graphics.DrawRectangle(Pens.Black, rec); graphics.DrawString(BlockColor.Name, this.DataGridView.Font, Brushes.Black, rec, sf); // if (PartPainted(paintParts, DataGridViewPaintParts.ErrorIcon)) } private static bool PartPainted(DataGridViewPaintParts paintParts, DataGridViewPaintParts paintPart) { return (paintParts & paintPart) != 0; } [DefaultValue("Center")] public StringAlignment VerticalAlignment { get { return verticalAlignment; } set { verticalAlignment = value; } } [DefaultValue("Near")] public StringAlignment HorizontalAlignment { get { return horizontalAlignment; } set { horizontalAlignment = value; } } private static bool IsInState(DataGridViewElementStates currentState, DataGridViewElementStates checkState) { return (currentState & checkState) != 0; } /// <summary> /// Little utility function called by the Paint function to see /// if a particular part needs to be painted. /// /// <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 OwnsEditor(int rowIndex) { if (rowIndex == -1 || DataGridView == null) return false; DataGridViewColourPickerEditor editor = DataGridView.EditingControl as DataGridViewColourPickerEditor; return editor != null && rowIndex == editor.EditingControlRowIndex; } internal void SetValue(int rowIndex, DateTime value) { //SelectedDateTime = value; //if (OwnsEditor(rowIndex)) // EditingFADatePicker.SelectedDateTime = value; } public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, DataGridViewCellStyle dataGridViewCellStyle) { base.InitializeEditingControl (rowIndex, initialFormattedValue, dataGridViewCellStyle); DataGridViewColourPickerEditor editor = DataGridView.EditingControl as DataGridViewColourPickerEditor; if (editor != null) { editor.RightToLeft = DataGridView.RightToLeft; string formattedValue = initialFormattedValue.ToString(); byte o; if (byte.TryParse(initialFormattedValue.ToString(), out o)) { editor.SelectedIndex = o - 1; //editor.Text = "RED"; } //if (string.IsNullOrEmpty(formattedValue)) //{ // editor.SelectedDateTime = DateTime.Now; // editor.mv.MonthViewControl.SetNoneDay(); //} //else //{ // editor.SelectedDateTime = DateTime.Parse(formattedValue); // editor.mv.MonthViewControl.clock.Dt = editor.SelectedDateTime; //} } } } public class DataGridViewColourPickerEditor : ColorPicker, IDataGridViewEditingControl { public void ApplyCellStyleToEditingControl (DataGridViewCellStyle dataGridViewCellStyle) { this.SelectedIndexChanged += new EventHandler (DataGridViewFADateTimePickerEditor_SelectedIndexChanged); } void DataGridViewFADateTimePickerEditor_SelectedIndexChanged (object sender, EventArgs e) { EditingControlValueChanged = true; EditingControlFormattedValue = (byte)8; if (EditingControlValueChanged == true) EditingControlDataGridView.NotifyCurrentCellDirty(true); } DataGridView _editingControlDataGridView; public DataGridView EditingControlDataGridView { get { return _editingControlDataGridView; } set { _editingControlDataGridView = value; } } object _editingControlFormattedValue; public object EditingControlFormattedValue { get { return _editingControlFormattedValue; } set { _editingControlFormattedValue = value; } } int _editingControlRowIndex; public int EditingControlRowIndex { get { return _editingControlRowIndex; } set { _editingControlRowIndex = value; } } bool _editingControlValueChanged; public bool EditingControlValueChanged { get { return _editingControlValueChanged; } set { _editingControlValueChanged = value; } } public bool EditingControlWantsInputKey (Keys keyData, bool dataGridViewWantsInputKey) { return true; } public Cursor EditingPanelCursor { get { return Cursors.Default; } } public object GetEditingControlFormattedValue (DataGridViewDataErrorContexts context) { if (this.SelectedItem == null) return 0; return ((byte)((Color) ((MyColour)this.SelectedItem).Colour).ToKnownColor()).ToString(); } public void PrepareEditingControlForEdit(bool selectAll) { } public bool RepositionEditingControlOnValueChange { get { return true; } } } //[ToolboxBitmap(typeof(DataGridViewFADateTimePickerColumn), // "DataGridViewFADateTimePickerColumn.bmp")] public class DataGridViewColourPickerColumn : DataGridViewColumn { public DataGridViewColourPickerColumn() : base(new DataGridViewColourPickerCell()) { } //[Browsable(false)] //[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)] //public override DataGridViewCell CellTemplate //{ // get { return base.CellTemplate; } // set // { // DataGridViewFADateTimePickerCell dataGridViewFADateTimePickerCell = // value as DataGridViewFADateTimePickerCell; // if (value != null && dataGridViewFADateTimePickerCell == null) // throw new InvalidCastException("Value provided for CellTemplate // must be of type DataGridViewRadioButtonElements. // DataGridViewRadioButtonCell or derive from it."); // base.CellTemplate = value; // } //} /// <summary> /// Small utility function that returns the template cell as a /// DataGridViewRadioButtonCell. /// </summary> //private DataGridViewFADateTimePickerCell FADatePickerCellTemplate //{ // get { return (DataGridViewFADateTimePickerCell)CellTemplate; } //} } public class ColorPicker : ComboBox { private const int RECTCOLOR_LEFT = 4; private const int RECTCOLOR_TOP = 3; private const int RECTCOLOR_WIDTH = 40; private const int RECTTEXT_MARGIN = 3; private const int RECTTEXT_LEFT = RECTCOLOR_LEFT + RECTCOLOR_WIDTH + RECTTEXT_MARGIN; public ColorPicker() { this.DrawMode = DrawMode.OwnerDrawFixed; this.DropDownStyle = ComboBoxStyle.DropDownList; for (byte i = 1; i < 174; i++) { MyColour c = new MyColour(); c.Colour = Color.FromKnownColor((KnownColor)i); c.Colourid = i; this.Items.Add(c); } this.DisplayMember = "Name"; this.ValueMember = "Colourid"; } protected override void Dispose(bool disposing) { if (disposing) { } base.Dispose(disposing); } protected override void OnDrawItem(DrawItemEventArgs e) { if (e.State == DrawItemState.Selected || e.State == DrawItemState.None) e.DrawBackground(); Graphics Grphcs = e.Graphics; Color BlockColor = Color.Empty; int left = RECTCOLOR_LEFT; if (e.Index == -1) BlockColor = SelectedIndex < 0 ? BackColor : Color.FromName(SelectedText); else BlockColor = ((MyColour)base.Items[e.Index]).Colour; Grphcs.FillRectangle(new SolidBrush(BlockColor), left, e.Bounds.Top + RECTCOLOR_TOP, RECTCOLOR_WIDTH, ItemHeight - 2 * RECTCOLOR_TOP); Grphcs.DrawRectangle(Pens.Black, left, e.Bounds.Top + RECTCOLOR_TOP, RECTCOLOR_WIDTH, ItemHeight - 2 * RECTCOLOR_TOP); Grphcs.DrawString(BlockColor.Name, e.Font, new SolidBrush(ForeColor), new Rectangle(RECTTEXT_LEFT, e.Bounds.Top, e.Bounds.Width - RECTTEXT_LEFT, ItemHeight)); base.OnDrawItem(e); } protected override void OnDropDownStyleChanged(EventArgs e) { if (this.DropDownStyle != ComboBoxStyle.DropDownList) this.DropDownStyle = ComboBoxStyle.DropDownList; } } public class MyColour { byte _colourid; public byte Colourid { get { return _colourid; } set { _colourid = value; } } Color _colour; public Color Colour { get { return _colour; } set { _colour = value; } } } } //

 

转帖 DataGridViewColourPicker