Aegisub/devel/SSATool/util.cs

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/*
SSATool - A collection of utilities for Advanced Substation Alpha
Copyright (C) 2007 Dan Donovan
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; ONLY under version 2
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.
*/
using System;
using System.Text;
using System.Drawing;
using System.Globalization;
using System.Runtime.InteropServices;
namespace SSATool {
/// <summary>
/// Summary description for util.
/// </summary>
public static class Util {
public enum ScaleRatioType {
Exponential,
Logarithmic,
Polynomial //can be linear, native to ASSA's \t
}
public struct ScaleRatioS {
public double expbase;
public ScaleRatioType srt;
}
//[DllImport("User32.dll")]
//public static extern int SendMessage(IntPtr hWnd,
// uint msg, int wParam, int lParam);
//public const uint LB_INITSTORAGE = 0x01A8;
public static double ScaleRatio(double ratio, double expbase, ScaleRatioType srt) {
unsafe {
switch(srt) {
case ScaleRatioType.Polynomial :
return Math.Pow(ratio,expbase);
case ScaleRatioType.Logarithmic :
return Math.Log(1.0 + (expbase-1.0)*ratio,expbase);
default: // exponential
return Math.Pow(expbase,ratio)/expbase;
}
}
}
public static double ScaleRatio(double ratio, ScaleRatioS srs) {
return ScaleRatio(ratio,srs.expbase,srs.srt);
}
public static readonly System.Globalization.CultureInfo cfi = System.Globalization.CultureInfo.InvariantCulture;
public static readonly System.Globalization.NumberFormatInfo nfi = cfi.NumberFormat;
public static int Precision = 2;
public static float PrecisionF = 10.0F;
public static string TimeSpanSSA(TimeSpan time, bool ceil, int PadHours) {
if (ceil)
time = TimeSpan.FromMilliseconds(Math.Ceiling(time.TotalMilliseconds / PrecisionF) * PrecisionF);
float msFloat = time.Milliseconds/PrecisionF;
int ms = Convert.ToInt32(ceil?msFloat:Math.Floor(msFloat),Util.nfi);
string msString = Convert.ToString(ms, Util.nfi).PadLeft(Precision, '0');
return String.Format("{0}:{1:D2}:{2:D2}.{3}",
time.Hours.ToString(nfi).PadLeft(PadHours, '0'),
time.Minutes, time.Seconds,msString,Precision);
}
/// <summary>
/// Returns a uint from a 32-bit RGBA string. Microsoft uses an int for this, not uint, so we need this custom function.
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static uint ReadColor(string input) {
char[] charain = input.ToCharArray();
string jColor = string.Empty;
char c;
bool ishex = false;
for(int index=0;index!=charain.Length;index+=1) {
c = charain[index];
if ((c >= 48 && c <= 57) || (c >= 65 && c <= 70) || (c >= 97 && c <= 102)) {
jColor += c;
if (c>=65) ishex = true;
}
else if (c == 'H' || c == 'h') ishex = true;
}
return Math.Max(uint.Parse(jColor,ishex?NumberStyles.HexNumber:NumberStyles.None, cfi), 0);
}
public static Color uintToColor(uint input) {
return Color.FromArgb(Convert.ToInt32(((input>>24)&0xFF),Util.nfi)
,Convert.ToInt32(((input>>16)&0xFF),Util.nfi)
,Convert.ToInt32(((input>>8)&0xFF),Util.nfi)
,Convert.ToInt32((input&0xFF),Util.nfi));
}
public static Point ParseCoordinate(string input) {
//Note: This function just ignores characters it doesn't like
char[] charain = input.ToCharArray();
string buff = string.Empty;
Point p = new Point();
for (int index=0;index!=charain.Length;index+=1) {
if (char.IsDigit(charain[index])) buff += charain[index];
else if (charain[index].Equals(',')) {
p.X = int.Parse(buff, nfi);
buff = string.Empty;
}
}
p.Y = int.Parse(buff, nfi);
return p;
}
public static bool TryParseCoordinate(string input, out Point result) {
char[] charain = input.ToCharArray();
string buff = string.Empty;
Point p = new Point();
char c;
bool FoundComma = false;
for (int index = 0; index != charain.Length; index+=1) {
c = charain[index];
if (char.IsDigit(c)) buff += c;
else if (c.Equals(',')) {
p.X = int.Parse(buff, nfi);
buff = string.Empty;
FoundComma = true;
}
else {
//invalid point
result = p; // who knows what's in here, we shouldn't be using it when false is returned anyway
return false;
}
}
if (!FoundComma || String.IsNullOrEmpty(buff)) {
result = p; // who knows what's in here, we shouldn't be using it when false is returned anyway
return false; //Invalid/empty string = invalid point
}
p.Y = int.Parse(buff, nfi);
result = p;
return true;
}
}
}