/// <summary>
/// Automatic calculation of the required width of the drop-down list
/// </summary>
/// <param name="comboBox">Current ComboBox</param>
/// <param name="rightSpaceWidth">Additional white space on the right</param>
/// <param name="minDropDownWidth">Minimum width of the drop-down list. If value is '-1', minimum width == comboBox.Width</param>
/// <example>
/// <code>
/// //Demo #1
/// var names = new[] { "Aleksey", "Alexander", "Anton", "Vladislav" };
/// comboBox1.DataSource = names; // or comboBox1.Items.AddRange(names);
/// comboBox1.Width = 40;
/// comboBox1.MeasureDropDownWidth();
///
/// //Demo #2
/// comboBox1.SizeChanged += (s, e) => comboBox1.MeasureDropDownWidth();
/// comboBox1.Width = 150;
/// comboBox1.Anchor |= AnchorStyles.Right;
/// </code>
/// </example>
/// <remarks>
/// Contributed by nagits, http://about.me/AlekseyNagovitsyn
/// </remarks>
public static void MeasureDropDownWidth(this ComboBox comboBox, int rightSpaceWidth = 15, int minDropDownWidth = -1)
{
if(comboBox.Items.Count == 0)
{
comboBox.DropDownWidth = Math.Max(comboBox.Width, minDropDownWidth);
return;
}
var graphics = comboBox.CreateGraphics();
float measureWidth = 0;
foreach (object item in comboBox.Items)
{
string text;
if (comboBox.DataSource == null || string.IsNullOrEmpty(comboBox.DisplayMember))
{
text = item.ToString();
}
else
{
var propertyInfo = item.GetType().GetProperty(comboBox.DisplayMember);
text = propertyInfo != null ? propertyInfo.GetValue(item, null).ToString() : item.ToString();
}
measureWidth = Math.Max(measureWidth, graphics.MeasureString(text, comboBox.Font).Width);
}
var newWidth = (int)Math.Round(measureWidth);
newWidth += rightSpaceWidth;
newWidth = Math.Min(newWidth, Screen.GetWorkingArea(comboBox).Width);
comboBox.DropDownWidth = Math.Max(newWidth, minDropDownWidth == -1 ? comboBox.Width : minDropDownWidth);
graphics.Dispose();
}
public static SizeF MesureString( this System.Windows.Forms.ListView List, string Text ) {
SizeF size;
using( Graphics g = List.CreateGraphics() )
size = g.MeasureString( Text, List.Font );
return size;
}
/// <summary>
/// Shrinks the left column (property names) on the <see cref="PropertyGrid"/>.
/// </summary>
/// <param name="propertyGrid">The <see cref="PropertyGrid"/>.</param>
/// <param name="padding">The number of extra pixels to pad. Can be negative to shrink the column more.</param>
public static void ShrinkPropertiesColumn(this PropertyGrid propertyGrid, int padding = 0)
{
using (var g = propertyGrid.CreateGraphics())
{
var tabs = propertyGrid.PropertyTabs.Cast<PropertyTab>();
var font = propertyGrid.Font;
var w = tabs.Max(x => g.MeasureString(x.TabName, font).Width + (x.Bitmap != null ? x.Bitmap.Width : 0));
MoveSplitter(propertyGrid, (int)w + padding);
}
}
public static Image PrintInvisibleControl(this Control targetControl)
{
using (Graphics g = targetControl.CreateGraphics())
{
//new bitmap object to save the image
var bmp = new Bitmap(targetControl.Width, targetControl.Height);
//Drawing control to the bitmap
targetControl.DrawToBitmap(bmp, new Rectangle(0, 0, targetControl.Width, targetControl.Height));
return bmp;
}
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Used to size a link label in mono because it is not working at all
/// </summary>
/// <param name="linkLabel"></param>
/// ------------------------------------------------------------------------------------
public static void SizeToContents(this LinkLabel linkLabel)
{
var w = linkLabel.ClientSize.Width;
using (var g = linkLabel.CreateGraphics())
{
if (ArchivingDlgViewModel.IsMono)
{
// split at the existing like breaks
var segments = linkLabel.Text.Replace("\r", "").Split(new[] {'\n'}, StringSplitOptions.None);
var newText = new StringBuilder();
foreach (var segment in segments)
{
var thisSegment = segment.Trim();
while (g.MeasureString(thisSegment, linkLabel.Font).Width > w)
{
var line = string.Empty;
var lastSpace = 0;
for (var i = 0; i < thisSegment.Length; i++)
{
if (char.IsWhiteSpace(thisSegment[i]))
{
if (g.MeasureString(line, linkLabel.Font).Width > w)
{
newText.AppendLine(thisSegment.Substring(0, lastSpace));
thisSegment = thisSegment.Substring(lastSpace + 1);
break;
}
lastSpace = i;
}
line += thisSegment[i];
}
}
// check for left-overs
if (thisSegment.Length > 0)
newText.AppendLine(thisSegment);
}
linkLabel.Text = newText.ToString();
}
var size = g.MeasureString(linkLabel.Text, linkLabel.Font, w);
linkLabel.Height = (int)Math.Ceiling(size.Height);
}
}
public static void InsertImage(this RichTextBox rtb, Image img)
{
var rtf = new StringBuilder();
// Append the RTF header
rtf.Append(@"{\rtf1\ansi\ansicpg1252\deff0\deflang1033");
// Create the font table using the RichTextBox's current font and append
// it to the RTF string
rtf.Append(GetFontTable(rtb.Font));
// Create the image control string and append it to the RTF string
using (var mgfx = rtb.CreateGraphics())
rtf.Append(GetImagePrefix(img, mgfx));
// Create the Windows Metafile and append its bytes in HEX format
using (var mgfx = rtb.CreateGraphics())
rtf.Append(GetRtfImage(img, mgfx));
// Close the RTF image control string
rtf.Append(@"}");
rtb.SelectedRtf = rtf.ToString();
}
public static void Highlighting(this RichTextBoxAdvanced box, int index, Color highlightColor)
{
int _lineWidth = System.Windows.Forms.SystemInformation.VerticalScrollBarWidth;
int _lineHeight = Convert.ToInt32(box.Font.Height * box.ZoomFactor);
using (Graphics g = box.CreateGraphics())
{
Pen _pen = new Pen(highlightColor, 2);
Brush brush = new SolidBrush(highlightColor);
Rectangle _line = new Rectangle(0, _lineHeight * index, 500, _lineHeight);
g.DrawRectangle(_pen, _line);
_pen.Dispose();
}
}
/// <summary>
/// Return Capture Screen (Bitmap file) of a Form Control
/// </summary>
/// <param name="ctr"></param>
/// <returns></returns>
public static Bitmap CaptureScreen(this Control ctr, int maxWidth = 700)
{
//int w = ctr.Size.Width;
//int h = ctr.Size.Height;
//if (maxWidth > 0 && w > maxWidth)
//{
// h = h * maxWidth / w;
// w = maxWidth;
//}
Graphics mygraphics = ctr.CreateGraphics();
Size s = ctr.Size;
Bitmap memoryImage = new Bitmap(s.Width, s.Height, mygraphics);
Graphics memoryGraphics = Graphics.FromImage(memoryImage);
IntPtr dc1 = mygraphics.GetHdc();
IntPtr dc2 = memoryGraphics.GetHdc();
BitBlt(dc2, 0, 0, ctr.Size.Width, ctr.Size.Height, dc1, 0, 0, 13369376);
mygraphics.ReleaseHdc(dc1);
memoryGraphics.ReleaseHdc(dc2);
return memoryImage;
}
public static void AdjustTileToWidth(this ListView lvw, int maxLines = 1, int iconSpacing = 4)
{
const string str = "Wg";
var lvTVInfo = new NativeMethods.LVTILEVIEWINFO(0) { IconTextSpacing = iconSpacing, MaxTextLines = maxLines };
var sb = new System.Text.StringBuilder(str);
for (int i = 0; i < maxLines; i++)
sb.Append("\r" + str);
using (Graphics g = lvw.CreateGraphics())
lvTVInfo.TileSize = new Size(lvw.ClientSize.Width, Math.Max(lvw.LargeImageList.ImageSize.Height, TextRenderer.MeasureText(g, sb.ToString(), lvw.Font).Height));
NativeMethods.SendMessage(lvw.Handle, NativeMethods.ListViewMessage.SetTileViewInfo, 0, lvTVInfo);
//var lvTVInfo = new NativeMethods.LVTILEVIEWINFO(0) { TileWidth = lvw.ClientSize.Width };
//NativeMethods.SendMessage(lvw.Handle, NativeMethods.ListViewMessage.SetTileViewInfo, 0, lvTVInfo);
//NativeMethods.SendMessage(lvw.Handle, (uint)NativeMethods.ListViewMessage.SetExtendedListViewStyle, new IntPtr(0x200000), new IntPtr(0x200000));
}
