STTextBox/ST.Library.UI.STTextBox/DataType/TextStyle.cs at main · LVJo/STTextBox · GitHub

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Drawing;

namespace ST.Library.UI.STTextBox

{

public struct TextStyle

{

private string EmptyGUID { get; set; }

public string Name;

public Color ForeColor;

public Color BackColor;

public Color UnderLineColor;

public Color StrikeOutColor;

public FontStyle FontStyle;

public bool RejectMix;

public static TextStyle Empty = new TextStyle() {

EmptyGUID = Guid.NewGuid().ToString()

};

public void Mix(TextStyle style) {

//this.ForeColor = _ColorMix(this.ForeColor, style.ForeColor);

//this.BackColor = _ColorMix(this.BackColor, style.BackColor);

//this.UnderLineColor = _ColorMix(this.UnderLineColor, style.UnderLineColor);

//this.StrikeOutColor = _ColorMix(this.StrikeOutColor, style.StrikeOutColor);

//this.FontStyle |= style.FontStyle;

if (this.ForeColor.A == 0) this.ForeColor = style.ForeColor;

if (this.BackColor.A == 0) this.BackColor = style.BackColor;

if (this.UnderLineColor.A == 0) this.UnderLineColor = style.UnderLineColor;

if (this.StrikeOutColor.A == 0) this.StrikeOutColor = style.StrikeOutColor;

this.FontStyle |= style.FontStyle;

}

private static Color _ColorMix(Color a, Color b) {

// T = Foreground, B = Background, F = Mixed

// alphaF = alphaT + alphaB * (1 - alphaT);

// colorF = (colorT * alphaT + colorB * alphaB * (1 - alphaT)) / alphaF;

if (a.A == 255) return a;

float aT = (float)a.A / 255;

float aB = (float)b.A / 255;

float aF = aT + aB * (1 - aT);

float temp = aB * (1 - aT); ;

int nA, nR, nG, nB;

nA = (int)(255 * aF);

nR = (int)((a.R * aT + b.R * temp) / aF);

nG = (int)((a.G * aT + b.G * temp) / aF);

nB = (int)((a.B * aT + b.B * temp) / aF);

return Color.FromArgb(_Range(nA, 0, 255), _Range(nR, 0, 255), _Range(nG, 0, 255), _Range(nB, 0, 255));

}

private static int _Range(int num, int nMin, int nMax) {

if (num < nMin) {

num = nMin;

} else if (num > nMax) {

num = nMax;

}

return num;

}

// [override] ==============================================================

public override string ToString() {

return "[" + this.Name + "]{" + this.ForeColor + "," + this.BackColor + "}";

}

public static bool operator ==(TextStyle a, TextStyle b) {

if (a.EmptyGUID != a.EmptyGUID) return false;

if (a.RejectMix != b.RejectMix) return false;

if (a.ForeColor != b.ForeColor) return false;

if (a.BackColor != b.BackColor) return false;

if (a.UnderLineColor != b.UnderLineColor) return false;

if (a.StrikeOutColor != b.StrikeOutColor) return false;

if (a.FontStyle != b.FontStyle) return false;

return true;

}

public static bool operator !=(TextStyle a, TextStyle b) {

return !(a == b);

}

public override bool Equals(object obj) {

return base.Equals(obj);

}

public override int GetHashCode() {

return base.GetHashCode();

}

public struct TextStyleRange : IComparable

{

private string EmptyGUID { get; set; }

public int Index;

public int Length;

public TextStyle Style;

public static TextStyleRange Empty = new TextStyleRange() {

EmptyGUID = Guid.NewGuid().ToString()

};

public static bool operator ==(TextStyleRange a, TextStyleRange b) {

if (a.EmptyGUID != b.EmptyGUID) return false;

if (a.Index != b.Index) return false;

if (a.Length != b.Length) return false;

if (a.Style != b.Style) return false;

return true;

}

public static bool operator !=(TextStyleRange a, TextStyleRange b) {

return !(a == b);

}

public override bool Equals(object obj) {

return base.Equals(obj);

}

public override int GetHashCode() {

return base.GetHashCode();

}

public override string ToString() {

return "(" + this.Index + "," + this.Length + ")" + this.Style;

}

public int CompareTo(object obj) {

return this.Index - ((TextStyleRange)obj).Index;

}

STTextBox/ST.Library.UI.STTextBox/DataType/TextStyle.cs at main · LVJo/STTextBox · GitHub

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