mcs/class/Managed.Windows.Forms/System.Windows.Forms/PropertyGridView.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Jonathan Chambers       (jonathan.chambers@ansys.com)
  24 //
  25 //
  26
  27 // NOT COMPLETE
  28
  29 using System;
  30 using System.Drawing;
  31
  32 namespace System.Windows.Forms.PropertyGridInternal
  33 {
  34         public class PropertyGridView : System.Windows.Forms.ScrollableControl
  35         {
  36                 internal const int LEFT_COLUMN_WIDTH = 16;
  37                 internal const int ROW_HEIGHT = 16;
  38                 internal const int RESIZE_WIDTH = 3;
  39                 private TextBox grid_textbox;
  40                 internal PropertyGrid property_grid;
  41                 internal bool redraw;
  42                 internal bool resizing_grid;
  43                 internal int label_column_width;
  44
  45                 public PropertyGridView(PropertyGrid property_grid)
  46                 {
  47                         this.property_grid = property_grid;
  48                         this.BackColor = Color.Beige;
  49                         grid_textbox = new TextBox();
  50
  51                         grid_textbox.Visible = false;
  52                         grid_textbox.Font = new Font(this.Font,FontStyle.Bold);
  53                         grid_textbox.BorderStyle = BorderStyle.None;
  54                         grid_textbox.BackColor = this.BackColor;
  55                         grid_textbox.Validated += new EventHandler(grid_textbox_Validated);
  56
  57                         label_column_width = 65;
  58                         resizing_grid = false;
  59
  60                         this.Controls.Add(grid_textbox);
  61
  62                         ForeColorChanged+=new EventHandler(RedrawEvent);
  63                         BackColorChanged+=new System.EventHandler(RedrawEvent);
  64                         FontChanged+=new EventHandler(RedrawEvent);
  65                         SizeChanged+=new EventHandler(RedrawEvent);
  66                         MouseMove+=new MouseEventHandler(PropertyGridView_MouseMove);
  67
  68                         SetStyle(ControlStyles.UserPaint, true);
  69                         SetStyle(ControlStyles.AllPaintingInWmPaint, true);
  70                         SetStyle(ControlStyles.ResizeRedraw, true);
  71                         SetStyle(ControlStyles.StandardClick | ControlStyles.StandardDoubleClick, false);
  72                 }
  73
  74                 protected override void OnPaint(PaintEventArgs pevent)
  75                 {
  76                         this.grid_textbox.Visible = false;
  77                         Draw(pevent);
  78                         pevent.Graphics.DrawImage(this.ImageBuffer, pevent.ClipRectangle, pevent.ClipRectangle, GraphicsUnit.Pixel);
  79                         if (property_grid.SelectedGridItem != null)
  80                                 grid_textbox.Visible = true;
  81                         base.OnPaint (pevent);
  82                 }
  83
  84                 // Derived classes should override Draw method and we dont want
  85                 // to break the control signature, hence this approach.
  86                 internal virtual void Draw (PaintEventArgs e)
  87                 {
  88                         if (redraw)
  89                         {
  90                                 Rectangle grid_rect = new Rectangle(0,0,this.Width-1,this.Height-1);
  91
  92                                 Rectangle grid_left_rect = new Rectangle(grid_rect.Left+1,grid_rect.Top+1,LEFT_COLUMN_WIDTH,ROW_HEIGHT);
  93                                 Rectangle grid_label_rect = new Rectangle(grid_left_rect.Right,grid_rect.Top+1,label_column_width,ROW_HEIGHT);
  94                                 Rectangle grid_value_rect = new Rectangle(grid_label_rect.Right,grid_rect.Top+1,grid_rect.Right-grid_label_rect.Right,ROW_HEIGHT);
  95
  96
  97                                 Brush label_brush = ThemeEngine.Current.ResPool.GetSolidBrush(ThemeEngine.Current.ColorWindowText);
  98                                 Brush label_backcolor_brush = ThemeEngine.Current.ResPool.GetSolidBrush(ThemeEngine.Current.ColorWindow);
  99                                 Brush back_color_brush = ThemeEngine.Current.ResPool.GetSolidBrush(this.BackColor);
 100                                 Brush control_brush = ThemeEngine.Current.ResPool.GetSolidBrush(property_grid.LineColor);
 101                                 Pen control_pen = ThemeEngine.Current.ResPool.GetPen(property_grid.LineColor);
 102
 103                                 // draw grid outline
 104                                 e.Graphics.FillRectangle(back_color_brush,grid_rect);
 105                                 e.Graphics.DrawRectangle(ThemeEngine.Current.ResPool.GetPen(SystemColors.ControlDark),grid_rect);
 106
 107                                 // draw items
 108                                 GridItemCollection grid_items = this.property_grid.grid_items;
 109                                 for (int i = 0; i < grid_items.Count; i++) {
 110                                         GridItem grid_item = grid_items[i];
 111
 112                                         label_brush = ThemeEngine.Current.ResPool.GetSolidBrush(ThemeEngine.Current.ColorWindowText);
 113                                         label_backcolor_brush = ThemeEngine.Current.ResPool.GetSolidBrush(ThemeEngine.Current.ColorWindow);
 114                                         if (grid_item == this.property_grid.SelectedGridItem) {
 115                                                 label_backcolor_brush = ThemeEngine.Current.ResPool.GetSolidBrush(ThemeEngine.Current.ColorHilight);
 116                                                 label_brush = ThemeEngine.Current.ResPool.GetSolidBrush(ThemeEngine.Current.ColorHilightText);
 117                                                 grid_textbox.Size = new Size(grid_value_rect.Size.Width-6,grid_value_rect.Size.Height);
 118                                                 grid_textbox.Location = new Point(grid_value_rect.Location.X+4,grid_value_rect.Location.Y+1);
 119
 120                                                 // PDB - added check to prevent crash with test app
 121                                                 if (grid_item.Value != null)  {
 122                                                         grid_textbox.Text = grid_item.Value.ToString();
 123                                                 } else {
 124                                                         grid_textbox.Text = string.Empty;
 125                                                 }
 126                                         }
 127
 128                                         e.Graphics.FillRectangle(control_brush,grid_left_rect);
 129
 130                                         e.Graphics.FillRectangle(label_backcolor_brush,grid_label_rect);
 131                                         e.Graphics.DrawRectangle(control_pen,grid_label_rect);
 132                                         e.Graphics.DrawString(grid_item.Label,this.Font,label_brush,grid_label_rect.Left + 5,grid_label_rect.Top+1);
 133
 134                                         e.Graphics.FillRectangle(back_color_brush,grid_value_rect);
 135                                         e.Graphics.DrawRectangle(control_pen,grid_value_rect);
 136                                         // PDB - added check to prevent crash with test app
 137                                         if (grid_item.Value != null) {
 138                                                 e.Graphics.DrawString(grid_item.Value.ToString(),new Font(this.Font,FontStyle.Bold),ThemeEngine.Current.ResPool.GetSolidBrush(ThemeEngine.Current.ColorWindowText),grid_value_rect.Left + 2,grid_value_rect.Top+1);
 139                                         }
 140
 141
 142                                         // shift down for next item
 143                                         grid_left_rect.Y = grid_label_rect.Y = grid_value_rect.Y = grid_left_rect.Y + ROW_HEIGHT;
 144                                 }
 145                                 redraw = false;
 146                         }
 147                 }
 148
 149
 150                 private void grid_textbox_Validated(object sender, EventArgs e)
 151                 {
 152                         if (this.property_grid.SelectedGridItem != null)
 153                         this.property_grid.SelectedGridItem.PropertyDescriptor.SetValue(this.property_grid.SelectedObject,this.property_grid.SelectedGridItem.PropertyDescriptor.Converter.ConvertTo(((TextBox)sender).Text,this.property_grid.SelectedGridItem.PropertyDescriptor.PropertyType));
 154                 }
 155
 156                 protected override void OnMouseMove(MouseEventArgs e)
 157                 {
 158                         if (resizing_grid) {
 159                                 label_column_width = Math.Max(e.X - LEFT_COLUMN_WIDTH,LEFT_COLUMN_WIDTH);
 160                                 Redraw();
 161                         } else if (e.X > label_column_width+LEFT_COLUMN_WIDTH - RESIZE_WIDTH && e.X < label_column_width+LEFT_COLUMN_WIDTH + RESIZE_WIDTH) {
 162                                 this.Cursor = Cursors.VSplit;
 163                         }
 164                         base.OnMouseMove (e);
 165                 }
 166
 167
 168                 protected override void OnMouseDown(MouseEventArgs e)
 169                 {
 170                         if (e.X > label_column_width+LEFT_COLUMN_WIDTH + 2 - RESIZE_WIDTH && e.X < label_column_width+LEFT_COLUMN_WIDTH + 2 + RESIZE_WIDTH) {
 171                                 resizing_grid = true;
 172                         } else {
 173                                 int index = e.Y / ROW_HEIGHT;
 174                                 if (index < property_grid.grid_items.Count)
 175                                         this.property_grid.SelectedGridItem = this.property_grid.grid_items[index];
 176                                 base.OnMouseDown (e);
 177                         }
 178                 }
 179
 180                 protected override void OnMouseUp(MouseEventArgs e)
 181                 {
 182                         resizing_grid = false;
 183                         base.OnMouseUp (e);
 184                 }
 185
 186
 187                 protected override void OnKeyDown(KeyEventArgs e)
 188                 {
 189                         if (this.property_grid.SelectedGridItem != null) {
 190                                 grid_textbox.Focus();
 191                         }
 192                         base.OnKeyDown (e);
 193                 }
 194
 195
 196                 internal void Redraw()
 197                 {
 198                         redraw = true;
 199                         Refresh ();
 200                 }
 201
 202                 private void RedrawEvent(object sender, System.EventArgs e)
 203                 {
 204                         Redraw();
 205                 }
 206
 207                 private void PropertyGridView_MouseMove(object sender, MouseEventArgs e)
 208                 {
 209
 210                         if (e.X > label_column_width+LEFT_COLUMN_WIDTH - RESIZE_WIDTH && e.X < label_column_width+LEFT_COLUMN_WIDTH + RESIZE_WIDTH
 211                                 || resizing_grid) {
 212                                 this.Cursor = Cursors.VSplit;
 213                         } else {
 214                                 this.Cursor = Cursors.Default;
 215                         }
 216                 }
 217         }
 218 }