CodeWalker/CodeWalker.WinForms/FormUtils.cs
2018-02-24 22:52:58 +11:00

303 lines
11 KiB
C#

using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using Point = System.Drawing.Point;
namespace CodeWalker
{
////public static class Utils
////{
//// //unused
//// //public static Bitmap ResizeImage(Image image, int width, int height)
//// //{
//// // var destRect = new Rectangle(0, 0, width, height);
//// // var destImage = new Bitmap(width, height);
//// // destImage.SetResolution(image.HorizontalResolution, image.VerticalResolution);
//// // using (var graphics = Graphics.FromImage(destImage))
//// // {
//// // graphics.CompositingMode = CompositingMode.SourceCopy;
//// // graphics.CompositingQuality = CompositingQuality.HighQuality;
//// // graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
//// // graphics.SmoothingMode = SmoothingMode.HighQuality;
//// // graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
//// // using (var wrapMode = new ImageAttributes())
//// // {
//// // wrapMode.SetWrapMode(WrapMode.TileFlipXY);
//// // graphics.DrawImage(image, destRect, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, wrapMode);
//// // }
//// // }
//// // return destImage;
//// //}
////}
[EditorBrowsable(EditorBrowsableState.Never)]
public static class ListViewExtensions
{
//from stackoverflow:
//https://stackoverflow.com/questions/254129/how-to-i-display-a-sort-arrow-in-the-header-of-a-list-view-column-using-c
[StructLayout(LayoutKind.Sequential)]
public struct HDITEM
{
public Mask mask;
public int cxy;
[MarshalAs(UnmanagedType.LPTStr)] public string pszText;
public IntPtr hbm;
public int cchTextMax;
public Format fmt;
public IntPtr lParam;
// _WIN32_IE >= 0x0300
public int iImage;
public int iOrder;
// _WIN32_IE >= 0x0500
public uint type;
public IntPtr pvFilter;
// _WIN32_WINNT >= 0x0600
public uint state;
[Flags]
public enum Mask
{
Format = 0x4, // HDI_FORMAT
};
[Flags]
public enum Format
{
SortDown = 0x200, // HDF_SORTDOWN
SortUp = 0x400, // HDF_SORTUP
};
};
public const int LVM_FIRST = 0x1000;
public const int LVM_GETHEADER = LVM_FIRST + 31;
public const int HDM_FIRST = 0x1200;
public const int HDM_GETITEM = HDM_FIRST + 11;
public const int HDM_SETITEM = HDM_FIRST + 12;
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr SendMessage(IntPtr hWnd, UInt32 msg, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr SendMessage(IntPtr hWnd, UInt32 msg, IntPtr wParam, ref HDITEM lParam);
public static void SetSortIcon(this ListView listViewControl, int columnIndex, SortOrder order)
{
IntPtr columnHeader = SendMessage(listViewControl.Handle, LVM_GETHEADER, IntPtr.Zero, IntPtr.Zero);
for (int columnNumber = 0; columnNumber <= listViewControl.Columns.Count - 1; columnNumber++)
{
var columnPtr = new IntPtr(columnNumber);
var item = new HDITEM
{
mask = HDITEM.Mask.Format
};
if (SendMessage(columnHeader, HDM_GETITEM, columnPtr, ref item) == IntPtr.Zero)
{
throw new Win32Exception();
}
if (order != SortOrder.None && columnNumber == columnIndex)
{
switch (order)
{
case SortOrder.Ascending:
item.fmt &= ~HDITEM.Format.SortDown;
item.fmt |= HDITEM.Format.SortUp;
break;
case SortOrder.Descending:
item.fmt &= ~HDITEM.Format.SortUp;
item.fmt |= HDITEM.Format.SortDown;
break;
}
}
else
{
item.fmt &= ~HDITEM.Format.SortDown & ~HDITEM.Format.SortUp;
}
if (SendMessage(columnHeader, HDM_SETITEM, columnPtr, ref item) == IntPtr.Zero)
{
throw new Win32Exception();
}
}
}
//private const int LVM_FIRST = 0x1000;
private const int LVM_SETITEMSTATE = LVM_FIRST + 43;
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct LVITEM
{
public int mask;
public int iItem;
public int iSubItem;
public int state;
public int stateMask;
[MarshalAs(UnmanagedType.LPTStr)]
public string pszText;
public int cchTextMax;
public int iImage;
public IntPtr lParam;
public int iIndent;
public int iGroupId;
public int cColumns;
public IntPtr puColumns;
};
[DllImport("user32.dll", EntryPoint = "SendMessage", CharSet = CharSet.Auto)]
public static extern IntPtr SendMessageLVItem(IntPtr hWnd, int msg, int wParam, ref LVITEM lvi);
/// <summary>
/// Select all rows on the given listview
/// </summary>
/// <param name="list">The listview whose items are to be selected</param>
public static void SelectAllItems(this ListView list)
{
SetItemState(list, -1, 2, 2);
}
/// <summary>
/// Deselect all rows on the given listview
/// </summary>
/// <param name="list">The listview whose items are to be deselected</param>
public static void DeselectAllItems(this ListView list)
{
SetItemState(list, -1, 2, 0);
}
/// <summary>
/// Set the item state on the given item
/// </summary>
/// <param name="list">The listview whose item's state is to be changed</param>
/// <param name="itemIndex">The index of the item to be changed</param>
/// <param name="mask">Which bits of the value are to be set?</param>
/// <param name="value">The value to be set</param>
public static void SetItemState(ListView list, int itemIndex, int mask, int value)
{
LVITEM lvItem = new LVITEM();
lvItem.stateMask = mask;
lvItem.state = value;
SendMessageLVItem(list.Handle, LVM_SETITEMSTATE, itemIndex, ref lvItem);
}
}
public static class TextBoxExtension
{
private const int EM_SETTABSTOPS = 0x00CB;
[DllImport("User32.dll", CharSet = CharSet.Auto)]
private static extern IntPtr SendMessage(IntPtr h, int msg, int wParam, int[] lParam);
public static Point GetCaretPosition(this TextBox textBox)
{
Point point = new Point(0, 0);
if (textBox.Focused)
{
point.X = textBox.SelectionStart - textBox.GetFirstCharIndexOfCurrentLine() + 1;
point.Y = textBox.GetLineFromCharIndex(textBox.SelectionStart) + 1;
}
return point;
}
public static void SetTabStopWidth(this TextBox textbox, int width)
{
SendMessage(textbox.Handle, EM_SETTABSTOPS, 1, new int[] { width * 4 });
}
}
public static class Prompt
{
//handy utility to get a string from the user...
public static string ShowDialog(IWin32Window owner, string text, string caption, string defaultvalue = "")
{
Form prompt = new Form()
{
Width = 450,
Height = 150,
FormBorderStyle = FormBorderStyle.FixedDialog,
Text = caption,
StartPosition = FormStartPosition.CenterParent,
MaximizeBox = false,
MinimizeBox = false
};
var textLabel = new Label() { Left = 30, Top = 20, Width = 370, Height = 20, Text = text, };
var textBox = new TextBox() { Left = 30, Top = 40, Width = 370, Text = defaultvalue };
var cancel = new Button() { Text = "Cancel", Left = 230, Width = 80, Top = 70, DialogResult = DialogResult.Cancel };
var confirmation = new Button() { Text = "Ok", Left = 320, Width = 80, Top = 70, DialogResult = DialogResult.OK };
cancel.Click += (sender, e) => { prompt.Close(); };
confirmation.Click += (sender, e) => { prompt.Close(); };
prompt.Controls.Add(textBox);
prompt.Controls.Add(confirmation);
prompt.Controls.Add(cancel);
prompt.Controls.Add(textLabel);
prompt.AcceptButton = confirmation;
return prompt.ShowDialog(owner) == DialogResult.OK ? textBox.Text : "";
}
}
//unused
//public class AccurateTimer
//{
// private delegate void TimerEventDel(int id, int msg, IntPtr user, int dw1, int dw2);
// private const int TIME_PERIODIC = 1;
// private const int EVENT_TYPE = TIME_PERIODIC;// + 0x100; // TIME_KILL_SYNCHRONOUS causes a hang ?!
// [DllImport("winmm.dll")]
// private static extern int timeBeginPeriod(int msec);
// [DllImport("winmm.dll")]
// private static extern int timeEndPeriod(int msec);
// [DllImport("winmm.dll")]
// private static extern int timeSetEvent(int delay, int resolution, TimerEventDel handler, IntPtr user, int eventType);
// [DllImport("winmm.dll")]
// private static extern int timeKillEvent(int id);
// Action mAction;
// Form mForm;
// private int mTimerId;
// private TimerEventDel mHandler; // NOTE: declare at class scope so garbage collector doesn't release it!!!
// public AccurateTimer(Form form, Action action, int delay)
// {
// mAction = action;
// mForm = form;
// timeBeginPeriod(1);
// mHandler = new TimerEventDel(TimerCallback);
// mTimerId = timeSetEvent(delay, 0, mHandler, IntPtr.Zero, EVENT_TYPE);
// }
// public void Stop()
// {
// int err = timeKillEvent(mTimerId);
// timeEndPeriod(1);
// System.Threading.Thread.Sleep(100);// Ensure callbacks are drained
// }
// private void TimerCallback(int id, int msg, IntPtr user, int dw1, int dw2)
// {
// if (mTimerId != 0) mForm.BeginInvoke(mAction);
// }
//}
}