#region License Information (GPL v3)
/*
ShareX - A program that allows you to take screenshots and share any file type
Copyright (c) 2007-2016 ShareX Team
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Optionally you can also view the license at .
*/
#endregion License Information (GPL v3)
using ShareX.HelpersLib.Properties;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Imaging;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Encoder = System.Drawing.Imaging.Encoder;
namespace ShareX.HelpersLib
{
public static class Extensions
{
public static void ForEach(this IEnumerable source, Action action)
{
if (source == null) throw new ArgumentNullException("source");
if (action == null) throw new ArgumentNullException("action");
foreach (T item in source)
{
action(item);
}
}
public static IEnumerable Zip(this IEnumerable first,
IEnumerable second, Func resultSelector)
{
using (IEnumerator e1 = first.GetEnumerator())
using (IEnumerator e2 = second.GetEnumerator())
{
while (e1.MoveNext() && e2.MoveNext())
{
yield return resultSelector(e1.Current, e2.Current);
}
}
}
public static byte[] GetBytes(this Image img)
{
using (MemoryStream ms = new MemoryStream())
{
img.Save(ms, img.RawFormat);
return ms.ToArray();
}
}
public static Stream GetStream(this Image img)
{
MemoryStream ms = new MemoryStream();
img.Save(ms, img.RawFormat);
return ms;
}
public static ImageCodecInfo GetCodecInfo(this ImageFormat format)
{
return ImageCodecInfo.GetImageEncoders().FirstOrDefault(info => info.FormatID.Equals(format.Guid));
}
public static string GetMimeType(this ImageFormat format)
{
ImageCodecInfo codec = format.GetCodecInfo();
if (codec != null) return codec.MimeType;
return "image/unknown";
}
public static bool IsValidIndex(this T[] array, int index)
{
return array != null && index >= 0 && index < array.Length;
}
public static bool IsValidIndex(this List list, int index)
{
return list != null && index >= 0 && index < list.Count;
}
public static T ReturnIfValidIndex(this T[] array, int index)
{
if (array.IsValidIndex(index)) return array[index];
return default(T);
}
public static T ReturnIfValidIndex(this List list, int index)
{
if (list.IsValidIndex(index)) return list[index];
return default(T);
}
public static T Last(this T[] array, int index = 0)
{
if (array.Length > index) return array[array.Length - index - 1];
return default(T);
}
public static T Last(this List list, int index = 0)
{
if (list.Count > index) return list[list.Count - index - 1];
return default(T);
}
public static double ToDouble(this Version value)
{
return Math.Max(value.Major, 0) * Math.Pow(10, 12) +
Math.Max(value.Minor, 0) * Math.Pow(10, 9) +
Math.Max(value.Build, 0) * Math.Pow(10, 6) +
Math.Max(value.Revision, 0);
}
public static bool IsValid(this Rectangle rect)
{
return rect.Width > 0 && rect.Height > 0;
}
public static Point Add(this Point point, int offset)
{
return point.Add(offset, offset);
}
public static Point Add(this Point point, int offsetX, int offsetY)
{
return new Point(point.X + offsetX, point.Y + offsetY);
}
public static Point Add(this Point point, Point offset)
{
return new Point(point.X + offset.X, point.Y + offset.Y);
}
public static Size Offset(this Size size, int offset)
{
return new Size(size.Width + offset, size.Height + offset);
}
public static Rectangle Offset(this Rectangle rect, int offset)
{
return new Rectangle(rect.X - offset, rect.Y - offset, rect.Width + offset * 2, rect.Height + offset * 2);
}
public static Rectangle LocationOffset(this Rectangle rect, int x, int y)
{
return new Rectangle(rect.X + x, rect.Y + y, rect.Width, rect.Height);
}
public static Rectangle LocationOffset(this Rectangle rect, int offset)
{
return rect.LocationOffset(offset, offset);
}
public static Rectangle SizeOffset(this Rectangle rect, int width, int height)
{
return new Rectangle(rect.X, rect.Y, rect.Width + width, rect.Height + height);
}
public static Rectangle SizeOffset(this Rectangle rect, int offset)
{
return rect.SizeOffset(offset, offset);
}
public static string Join(this T[] array, string separator = " ")
{
StringBuilder sb = new StringBuilder();
if (array != null)
{
foreach (T t in array)
{
if (sb.Length > 0 && !string.IsNullOrEmpty(separator)) sb.Append(separator);
sb.Append(t);
}
}
return sb.ToString();
}
public static void BeginUpdate(this RichTextBox rtb)
{
NativeMethods.SendMessage(rtb.Handle, (int)WindowsMessages.SETREDRAW, 0, 0);
}
public static void EndUpdate(this RichTextBox rtb)
{
NativeMethods.SendMessage(rtb.Handle, (int)WindowsMessages.SETREDRAW, 1, 0);
rtb.Invalidate();
}
public static void AddContextMenu(this RichTextBox rtb)
{
if (rtb.ContextMenuStrip == null)
{
ContextMenuStrip cms = new ContextMenuStrip { ShowImageMargin = false };
ToolStripMenuItem tsmiCut = new ToolStripMenuItem(Resources.Extensions_AddContextMenu_Cut);
tsmiCut.Click += (sender, e) => rtb.Cut();
cms.Items.Add(tsmiCut);
ToolStripMenuItem tsmiCopy = new ToolStripMenuItem(Resources.Extensions_AddContextMenu_Copy);
tsmiCopy.Click += (sender, e) => rtb.Copy();
cms.Items.Add(tsmiCopy);
ToolStripMenuItem tsmiPaste = new ToolStripMenuItem(Resources.Extensions_AddContextMenu_Paste);
tsmiPaste.Click += (sender, e) => rtb.Paste();
cms.Items.Add(tsmiPaste);
rtb.ContextMenuStrip = cms;
}
}
public static void SaveJPG(this Image img, Stream stream, int quality)
{
quality = quality.Between(0, 100);
EncoderParameters encoderParameters = new EncoderParameters(1);
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, quality);
img.Save(stream, ImageFormat.Jpeg.GetCodecInfo(), encoderParameters);
}
public static void SaveJPG(this Image img, string filepath, int quality)
{
quality = quality.Between(0, 100);
EncoderParameters encoderParameters = new EncoderParameters(1);
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, quality);
img.Save(filepath, ImageFormat.Jpeg.GetCodecInfo(), encoderParameters);
}
public static void SaveGIF(this Image img, Stream stream, GIFQuality quality)
{
if (quality == GIFQuality.Default)
{
img.Save(stream, ImageFormat.Gif);
}
else
{
Quantizer quantizer;
switch (quality)
{
case GIFQuality.Grayscale:
quantizer = new GrayscaleQuantizer();
break;
case GIFQuality.Bit4:
quantizer = new OctreeQuantizer(15, 4);
break;
default:
case GIFQuality.Bit8:
quantizer = new OctreeQuantizer(255, 4);
break;
}
using (Bitmap quantized = quantizer.Quantize(img))
{
quantized.Save(stream, ImageFormat.Gif);
}
}
}
public static long ToUnix(this DateTime dateTime)
{
return Helpers.DateTimeToUnix(dateTime);
}
public static void AppendTextToSelection(this TextBox tb, string text)
{
if (!string.IsNullOrEmpty(text))
{
int start = tb.SelectionStart;
tb.Text = tb.Text.Insert(start, text);
tb.SelectionStart = start + text.Length;
}
}
public static void RadioCheck(this ToolStripMenuItem tsmi)
{
ToolStrip parent = tsmi.GetCurrentParent();
foreach (ToolStripMenuItem tsmiParent in parent.Items.OfType())
{
if (tsmiParent != tsmi)
{
tsmiParent.Checked = false;
}
}
tsmi.Checked = true;
}
public static void InvokeSafe(this Control control, Action action)
{
if (control != null && !control.IsDisposed)
{
if (control.InvokeRequired)
{
control.Invoke(action);
}
else
{
action();
}
}
}
public static void ForceActivate(this Form form)
{
if (!form.Visible)
{
form.Show();
}
if (form.WindowState == FormWindowState.Minimized)
{
form.WindowState = FormWindowState.Normal;
}
form.BringToFront();
form.Activate();
}
public static int WeekOfYear(this DateTime dateTime)
{
return CultureInfo.CurrentCulture.Calendar.GetWeekOfYear(dateTime, CalendarWeekRule.FirstDay, DayOfWeek.Monday);
}
public static Icon ToIcon(this Bitmap bmp)
{
IntPtr handle = bmp.GetHicon();
return Icon.FromHandle(handle);
}
public static void DisposeHandle(this Icon icon)
{
if (icon.Handle != IntPtr.Zero)
{
NativeMethods.DestroyIcon(icon.Handle);
}
}
public static void ApplyDefaultPropertyValues(this object self)
{
foreach (PropertyDescriptor prop in TypeDescriptor.GetProperties(self))
{
DefaultValueAttribute attr = prop.Attributes[typeof(DefaultValueAttribute)] as DefaultValueAttribute;
if (attr != null) prop.SetValue(self, attr.Value);
}
}
public static void MoveUp(this ListViewItem lvi)
{
ListView lv = lvi.ListView;
if (lv.Items.Count > 1)
{
int index = lvi.Index;
if (index == 0)
{
index = lv.Items.Count - 1;
}
else
{
index--;
}
lv.Items.Remove(lvi);
lv.Items.Insert(index, lvi);
}
lv.Focus();
lvi.EnsureVisible();
lvi.Selected = true;
}
public static void MoveDown(this ListViewItem lvi)
{
ListView lv = lvi.ListView;
if (lv.Items.Count > 1)
{
int index = lvi.Index;
if (index == lv.Items.Count - 1)
{
index = 0;
}
else
{
index++;
}
lv.Items.Remove(lvi);
lv.Items.Insert(index, lvi);
}
lv.Focus();
lvi.EnsureVisible();
lvi.Selected = true;
}
public static Bitmap CreateEmptyBitmap(this Image img, int widthOffset = 0, int heightOffset = 0, PixelFormat pixelFormat = PixelFormat.Format32bppArgb)
{
Bitmap bmp = new Bitmap(img.Width + widthOffset, img.Height + heightOffset, pixelFormat);
bmp.SetResolution(img.HorizontalResolution, img.VerticalResolution);
return bmp;
}
public static Bitmap CreateEmptyBitmap(this Image img, PixelFormat pixelFormat)
{
return img.CreateEmptyBitmap(0, 0, pixelFormat);
}
public static string GetDescription(this Type type)
{
DescriptionAttribute[] attributes = (DescriptionAttribute[])type.GetCustomAttributes(typeof(DescriptionAttribute), false);
return attributes.Length > 0 ? attributes[0].Description : type.Name;
}
public static IEnumerable TakeLast(this IEnumerable source, int count)
{
return source.Reverse().Take(count).Reverse();
}
public static void Check(this ToolStripMenuItem tsmi)
{
if (tsmi != null)
{
foreach (ToolStripMenuItem item in tsmi.GetCurrentParent().Items)
{
if (item != null)
{
item.Checked = item == tsmi;
}
}
}
}
public static Version Normalize(this Version version)
{
return new Version(Math.Max(version.Major, 0), Math.Max(version.Minor, 0), Math.Max(version.Build, 0), Math.Max(version.Revision, 0));
}
public static void Move(this List list, int oldIndex, int newIndex)
{
T obj = list[oldIndex];
list.RemoveAt(oldIndex);
list.Insert(newIndex, obj);
}
public static void SetWatermark(this TextBox textBox, string watermarkText, bool showCueWhenFocus = false)
{
if (textBox != null && textBox.IsHandleCreated && watermarkText != null)
{
NativeMethods.SendMessage(textBox.Handle, (int)NativeMethods.EM_SETCUEBANNER, showCueWhenFocus ? 1 : 0, watermarkText);
}
}
public static void HideImageMargin(this ToolStripDropDownItem tsddi)
{
((ToolStripDropDownMenu)tsddi.DropDown).ShowImageMargin = false;
}
public static void SetValue(this NumericUpDown nud, decimal number)
{
nud.Value = number.Between(nud.Minimum, nud.Maximum);
}
public static bool IsValidImage(this PictureBox pb)
{
return pb.Image != null && pb.Image != pb.InitialImage && pb.Image != pb.ErrorImage;
}
public static void IgnoreSeparatorClick(this ContextMenuStrip cms)
{
bool cancelClose = false;
cms.ItemClicked += (sender, e) =>
{
cancelClose = e.ClickedItem is ToolStripSeparator;
};
cms.Closing += (sender, e) =>
{
if (e.CloseReason == ToolStripDropDownCloseReason.ItemClicked && cancelClose)
{
e.Cancel = true;
}
};
}
public static Rectangle Combine(this IEnumerable rects)
{
Rectangle result = Rectangle.Empty;
foreach (Rectangle rect in rects)
{
if (result.IsEmpty)
{
result = rect;
}
else
{
result = Rectangle.Union(result, rect);
}
}
return result;
}
public static Rectangle AddPoint(this Rectangle rect, Point point)
{
return Rectangle.Union(rect, new Rectangle(point, new Size(1, 1)));
}
public static Rectangle CreateRectangle(this IEnumerable points)
{
Rectangle result = Rectangle.Empty;
foreach (Point point in points)
{
if (result.IsEmpty)
{
result = new Rectangle(point, new Size(1, 1));
}
else
{
result = result.AddPoint(point);
}
}
return result;
}
}
}