/// <summary>
/// Draw the background for the box.
/// </summary>
static void DrawBox()
{
string topString, bottomString, lineString;
// Build the border strings
topString = "\x00DA".PadRight(boxW - 1, '\x00C4') + "\x00BF"; // top-left corner, horizontal lines, top-right corner
lineString = "\x00B3".PadRight(boxW - 1) + "\x00B3"; // Vertical line, empty spaces, vertical line
bottomString = "\x00C0".PadRight(boxW - 1, '\x00C4') + "\x00D9"; // low-left corner, horizontal lines, low-right corner
// Write the top
SuperConsole.WriteColor(boxX, boxY, ConsoleColor.Black, ConsoleColor.DarkGrey, topString);
// Write the necessary middle lines
for (int i = 1; i < boxH - 1; i++)
{
SuperConsole.WriteColor(boxX, boxY + i, ConsoleColor.Black, ConsoleColor.DarkGrey, lineString);
}
// Finally, the bottom.
SuperConsole.WriteColor(boxX, boxY + boxH - 1, ConsoleColor.Black, ConsoleColor.DarkGrey, bottomString);
}
/// <summary>
/// Redraw the box with the correct scroll position
/// </summary>
static void DrawElements()
{
int scrollPos;
// We only want to be at scroll position 0 or max scroll when the cursor is on the first or last element respectively.
if (cursorPos == 0)
{
scrollPos = 0;
}
else if (cursorPos == strings.Length - 1)
{
scrollPos = strings.Length - (boxH - 2);
}
else
{
int minScroll = -1; // Starting at -1 ensures that it does not start scrolling right away.
int maxScroll = strings.Length - (boxH - 3); // -3 ensures that it will never scroll all the way down.
// Get the scroll percentage ( range [0, 1] )
float fscrollPos = ((float)cursorPos) / ((float)strings.Length - 1);
// Calculate the actual scroll position
scrollPos = (int)System.Math.Floor(((float)minScroll) + (float)(maxScroll - minScroll) * fscrollPos + 0.3f);
// Ensure it doesn't go below 0.
if (scrollPos < 0)
{
scrollPos = 0;
}
// Also ensure (corner case) that it doesn't scroll farther than possible
int trueMax = strings.Length - (boxH - 2);
if (scrollPos > trueMax)
{
scrollPos = trueMax;
}
}
for (int i = 0; i < boxH - 2; i++)
{
int element = i + scrollPos;
// Default colors are Black on DarkGrey
ConsoleColor fg = ConsoleColor.Black;
ConsoleColor bg = ConsoleColor.DarkGrey;
if (element == cursorPos)
{
// This is the selected element, so draw it as white on dark red
bg = ConsoleColor.DarkRed;
fg = ConsoleColor.White;
}
// Build the string
string s = strings[i + scrollPos];
// Ensure that the string is no longer than the box width (minus 2 for the border), then pad the rest with spaces
if (s.Length > boxW - 2)
{
s = s.Substring(0, boxW - 2);
}
s = s.PadRight(boxW - 2);
// Draw!
SuperConsole.WriteColor(boxX + 1, boxY + i + 1, fg, bg, s);
}
}
/// <summary>
/// Draws a text box containing the specific strings at or near the cursor
/// </summary>
/// <param name="strings">The list of strings to display in the text box</param>
/// <param name="maxLength">The length of the longest string in the list</param>
/// <param name="initialIndex">The initial index to select in the list</param>
/// <returns>The string that was selected by the Enter key, or null if Escape was pressed</returns>
public static string Run(string[] strings, int maxLength, int initialIndex)
{
cursorPos = initialIndex;
if (cursorPos < 0 || cursorPos >= strings.Length)
{
cursorPos = 0;
}
TextWindow.strings = strings;
// Calculate the box extents (as long as the longest string, but no wider than the console window, similar considerations for height)
boxW = System.Math.Min(maxLength + 2, Console.WindowWidth);
boxH = System.Math.Min(Console.WindowHeight, strings.Length + 2);
// Try to place the box at the cursor.
boxX = Console.WindowLeft;
boxY = SuperConsole.CursorY;
// If this position would draw the box off the bottom of the console, move it up until it fits.
if (boxY + boxH >= Console.WindowHeight)
{
boxY = Console.WindowHeight - boxH;
}
boxY += Console.WindowTop;
// Cache the background so that we can restore it later.
SuperConsole.CacheConsole(boxX, boxY, boxW, boxH);
// Save the current console mode, turn off all mode flags (specifically, no input echo
SuperConsole.Mode mode = SuperConsole.ConsoleMode;
SuperConsole.ConsoleMode = SuperConsole.Mode.None;
// Draw the actual box (Background drawing is only done this once, elements drawn as necessary)
DrawBox();
DrawElements();
bool done = false;
string retVal = null;
while (!done)
{
switch (SuperConsole.ReadKey())
{
case Keys.Escape: // Quit without setting the return value (no retval selected)
retVal = null;
done = true;
break;
case Keys.Right: // Move the cursor down one element
case Keys.Down:
if (cursorPos < strings.Length - 1)
{
cursorPos++;
DrawElements();
}
break;
case Keys.Left: // Move the cursor up one element
case Keys.Up:
if (cursorPos > 0)
{
cursorPos--;
DrawElements();
}
break;
case Keys.PageDown: // Move the cursor down one full screen
cursorPos += boxH - 2;
if (cursorPos >= strings.Length)
{
cursorPos = strings.Length - 1;
}
DrawElements();
break;
case Keys.PageUp: // Move the cursor up one full screen
cursorPos -= boxH - 2;
if (cursorPos < 0)
{
cursorPos = 0;
}
DrawElements();
break;
case Keys.Home: // Move the cursor to the top
cursorPos = 0;
DrawElements();
break;
case Keys.End: // Move the cursor to the bottom
cursorPos = strings.Length - 1;
DrawElements();
break;
case Keys.Enter: // Select the string currently under the cursor
retVal = strings[cursorPos];
done = true;
break;
}
}
// Restore the console mode and the character data that was there before the console was drawn.
SuperConsole.ConsoleMode = mode;
SuperConsole.RestoreCache();
// Abandon ship!
return(retVal);
}
/// <summary>
/// Rescan all of the supplied roots.
/// </summary>
/// <param name="roots"></param>
static void Rescan(string[] roots)
{
scanMutex.WaitOne();
{
// Load a list of the paths
List <string> pathList = new List <string>(LoadPaths());
// Remove from the path list any paths that belong to any of the given roots.
RemoveRootPaths(roots, pathList);
// We'll maintain a stack of the paths that need to be searched. Start by pushing all of the roots onto it.
Stack <string> pathsToSearch = new Stack <string>();
for (int i = roots.Length - 1; i >= 0; i--)
{
pathsToSearch.Push(roots[i]);
}
// Finally, we need the regular expressions corresponding to the ignore rules.
Regex[] ignores = LoadIgnoreRegexes(roots);
System.Diagnostics.Stopwatch watch = new System.Diagnostics.Stopwatch();
watch.Start();
const float timeDiff = 0.5f;
float prevTime = ((float)watch.ElapsedMilliseconds) / 1000 - timeDiff - 0.1f;
Console.WriteLine();
int writeX = Console.WindowLeft;
int writeY = SuperConsole.CursorY - 1;
SuperConsole.CacheConsole(writeX, writeY, Console.WindowWidth, 2);
SuperConsole.WriteColor(writeX, writeY, ConsoleColor.LightYellow, ConsoleColor.DarkBlue, "Rescanning...".PadRight(Console.WindowWidth));
// For each directory
while (pathsToSearch.Count != 0)
{
// Make sure to add backslashes as necessary.
string path = TrailBackslash(pathsToSearch.Pop());
// If this path matches any of the ignore lists, we'll skip it completely.
bool ignore = false;
for (int i = 0; i < ignores.Length; i++)
{
if (ignores[i].IsMatch(path))
{
ignore = true;
break;
}
}
if (ignore)
{
continue;
}
// If enough time has elapsed, display a new directory
float curTime = ((float)watch.ElapsedMilliseconds) / 1000;
if (curTime - prevTime > timeDiff)
{
prevTime += timeDiff;
SuperConsole.WriteColor(writeX, writeY + 1, ConsoleColor.White, ConsoleColor.DarkBlue, path.PadRight(Console.WindowWidth));
System.Threading.Thread.Sleep(1);
}
// Get the subdirectories (wrapped in a try block mostly to avoid the access denied errors that some folders give)
string[] newDirs;
try
{
newDirs = Directory.GetDirectories(path);
}
catch (Exception) { newDirs = new string[0]; }
// Add the lower-cased current path to the list.
pathList.Add(path.ToLowerInvariant());
// Add each subdirectory to the scan list.
for (int i = newDirs.Length - 1; i >= 0; i--)
{
pathsToSearch.Push(newDirs[i]);
}
}
SuperConsole.RestoreCache();
SuperConsole.CursorY--;
// Sort and write the path list.
pathList.Sort();
WritePaths(pathList.ToArray());
}
scanMutex.ReleaseMutex();
}
