using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Media;
using System.Windows;
using System.Windows.Input;
namespace Editor
{
public class BracketSign : EquationBase
{
public BracketSignType SignType { get; set; }
FormattedText signText; //used by certain brackets
FormattedText signText2; //used by certain brackets
FormattedText midText; //for bigger curly brackets
double BracketBreakLimit { get { return FontSize * 2.8; } }
double leftPaddingFactor = .1;
double rightPaddingFactor = .1;
double SignLeft { get { return Left + LeftPadding; } }
double SignRight { get { return Right - RightPadding; } }
double LeftPadding { get { return FontSize * leftPaddingFactor; } }
double RightPadding { get { return FontSize * rightPaddingFactor; } }
public BracketSign(EquationContainer parent, BracketSignType entityType)
: base(parent)
{
this.SignType = entityType;
IsStatic = true;
}
void CreateTextBrackets()
{
switch (SignType)
{
case BracketSignType.LeftRound:
case BracketSignType.RightRound:
CreateRoundTextBracket();
break;
case BracketSignType.LeftCurly:
case BracketSignType.RightCurly:
CreateCurlyTextBracket();
break;
}
}
void CreateRoundTextBracket()
{
if (Height < FontSize)
{
string singText = SignType == BracketSignType.LeftRound ? "(" : ")";
FitSignToHeight(FontType.STIXSizeOneSym, singText);
}
else if (Height < FontSize * 1.6)
{
string singText = SignType == BracketSignType.LeftRound ? "(" : ")";
FitSignToHeight(FontType.STIXSizeTwoSym, singText);
}
else if (Height < FontSize * 2.2)
{
string singText = SignType == BracketSignType.LeftRound ? "(" : ")";
FitSignToHeight(FontType.STIXSizeThreeSym, singText);
}
else if (Height < BracketBreakLimit)
{
string singText = SignType == BracketSignType.LeftRound ? "(" : ")";
FitSignToHeight(FontType.STIXSizeFourSym, singText);
}
else
{
string text1 = SignType == BracketSignType.LeftRound ? "\u239b" : "\u239e";
string text2 = SignType == BracketSignType.LeftRound ? "\u239d" : "\u23a0";
signText = FontFactory.GetFormattedText(text1, FontType.STIXSizeOneSym, FontSize * .5);
signText2 = FontFactory.GetFormattedText(text2, FontType.STIXSizeOneSym, FontSize * .5);
}
}
void CreateCurlyTextBracket()
{
if (Height < FontSize)
{
string singText = SignType == BracketSignType.LeftCurly ? "{" : "}";
FitSignToHeight(FontType.STIXSizeOneSym, singText);
}
else if (Height < FontSize * 1.6)
{
string singText = SignType == BracketSignType.LeftCurly ? "{" : "}";
FitSignToHeight(FontType.STIXSizeTwoSym, singText);
}
else if (Height < FontSize * 2.2)
{
string singText = SignType == BracketSignType.LeftCurly ? "{" : "}";
FitSignToHeight(FontType.STIXSizeThreeSym, singText);
}
else if (Height < BracketBreakLimit)
{
string singText = SignType == BracketSignType.LeftCurly ? "{" : "}";
FitSignToHeight(FontType.STIXSizeFourSym, singText);
}
else
{
string text1 = SignType == BracketSignType.LeftCurly ? "\u23a7" : "\u23ab";
string midtex = SignType == BracketSignType.LeftCurly ? "\u23a8" : "\u23ac";
string text2 = SignType == BracketSignType.LeftCurly ? "\u23a9" : "\u23ad";
signText = FontFactory.GetFormattedText(text1, FontType.STIXSizeOneSym, FontSize * .5);
midText = FontFactory.GetFormattedText(midtex, FontType.STIXSizeOneSym, FontSize * .5);
signText2 = FontFactory.GetFormattedText(text2, FontType.STIXSizeOneSym, FontSize * .5);
}
}
private void FitSignToHeight(FontType fontType, string unicodeCharText)
{
double factor = .4;
do
{
signText = FontFactory.GetFormattedText(unicodeCharText, fontType, FontSize * factor);
factor += .05;
}
while (Height > signText.Extent);
}
public override double Height
{
get
{
return base.Height;
}
set
{
base.Height = value;
if (SignType == BracketSignType.LeftRound || SignType == BracketSignType.RightRound ||
SignType == BracketSignType.LeftCurly || SignType == BracketSignType.RightCurly
)
{
CreateTextBrackets();
}
DetermineWidth();
}
}
void DetermineWidth()
{
double width = FontSize * .2;
switch (SignType)
{
case BracketSignType.LeftRound:
case BracketSignType.RightRound:
if (Height < BracketBreakLimit)
{
width = signText.GetExactWidth();
}
else
{
width = FontSize * .26;
}
break;
case BracketSignType.LeftCurly:
case BracketSignType.RightCurly:
if (Height < BracketBreakLimit)
{
width = signText.GetExactWidth();
}
else
{
width = FontSize * .3;
}
break;
case BracketSignType.LeftBar:
case BracketSignType.RightBar:
width = LineThickness;
break;
case BracketSignType.LeftDoubleBar:
case BracketSignType.RightDoubleBar:
width = LineThickness * 2 + FontSize * 0.05;
break;
case BracketSignType.LeftAngle:
case BracketSignType.RightAngle:
width = FontSize * .12 + Height * 0.1;
break;
case BracketSignType.LeftSquareBar:
case BracketSignType.RightSquareBar:
width = LineThickness * 2 + FontSize * 0.15;
break;
}
Width = width + LeftPadding + RightPadding;
}
public override void DrawEquation(DrawingContext dc)
{
switch (SignType)
{
case BracketSignType.LeftAngle:
PaintLeftAngle(dc);
break;
case BracketSignType.RightAngle:
PaintRightAngle(dc);
break;
case BracketSignType.LeftBar:
case BracketSignType.RightBar:
PaintVerticalBar(dc);
break;
case BracketSignType.LeftCeiling:
PaintLeftCeiling(dc);
break;
case BracketSignType.RightCeiling:
PaintRightCeiling(dc);
break;
case BracketSignType.LeftCurly:
case BracketSignType.RightCurly:
PaintCurly(dc);
break;
case BracketSignType.LeftDoubleBar:
case BracketSignType.RightDoubleBar:
dc.DrawLine(StandardPen, new Point(SignLeft, Top), new Point(SignLeft, Bottom));
dc.DrawLine(StandardPen, new Point(SignRight, Top), new Point(SignRight, Bottom));
break;
case BracketSignType.LeftFloor:
PaintLeftFloor(dc);
break;
case BracketSignType.RightFloor:
PaintRightFloor(dc);
break;
case BracketSignType.LeftRound:
case BracketSignType.RightRound:
PaintRound(dc);
break;
case BracketSignType.LeftSquare:
PaintLeftSquare(dc);
break;
case BracketSignType.RightSquare:
PaintRightSquare(dc);
break;
case BracketSignType.LeftSquareBar:
PaintLeftSquareBar(dc);
break;
case BracketSignType.RightSquareBar:
PaintRightSquareBar(dc);
break;
}
}
void PaintVerticalBar(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Top),
new Point(SignRight, Bottom),
new Point(SignLeft, Bottom),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
}
void PaintLeftCeiling(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Top),
new Point(SignRight, Top + ThinLineThickness),
new Point(SignLeft + ThinLineThickness, Top + ThinLineThickness),
new Point(SignLeft + ThinLineThickness, Bottom),
new Point(SignLeft, Bottom),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
}
void PaintRightCeiling(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Top),
new Point(SignRight, Bottom),
new Point(SignRight - ThinLineThickness, Bottom),
new Point(SignRight - ThinLineThickness, Top + ThinLineThickness),
new Point(SignLeft, Top + ThinLineThickness),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
}
void PaintLeftFloor(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignLeft + ThinLineThickness, Top),
new Point(SignLeft + ThinLineThickness, Bottom - ThinLineThickness),
new Point(SignRight, Bottom - ThinLineThickness),
new Point(SignRight, Bottom),
new Point(SignLeft, Bottom),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
}
void PaintRightFloor(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Bottom),
new Point(SignLeft, Bottom),
new Point(SignLeft, Bottom - ThinLineThickness),
new Point(SignRight - ThinLineThickness, Bottom - ThinLineThickness),
new Point(SignRight - ThinLineThickness, Top),
};
dc.FillPolylineGeometry(new Point(SignRight, Top), points);
}
void PaintLeftSquareBar(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Top),
new Point(SignRight, Top + ThinLineThickness),
new Point(SignLeft + ThinLineThickness, Top + ThinLineThickness),
new Point(SignLeft + ThinLineThickness, Bottom - ThinLineThickness),
new Point(SignRight, Bottom - ThinLineThickness),
new Point(SignRight, Bottom),
new Point(SignLeft, Bottom),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
dc.DrawLine(ThinPen, new Point(SignLeft + FontSize * .12, Top + ThinLineThickness * .5), new Point(SignLeft + FontSize * .12, Bottom - ThinLineThickness * .5));
}
void PaintRightSquareBar(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Top),
new Point(SignRight, Bottom),
new Point(SignLeft, Bottom),
new Point(SignLeft, Bottom - ThinLineThickness),
new Point(SignRight - ThinLineThickness, Bottom - ThinLineThickness),
new Point(SignRight - ThinLineThickness, Top + ThinLineThickness),
new Point(SignLeft, Top + ThinLineThickness),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
dc.DrawLine(ThinPen, new Point(SignRight - FontSize * .12, Top + ThinLineThickness * .5), new Point(SignRight - FontSize * .12, Bottom - ThinLineThickness * .5));
}
void PaintLeftSquare(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Top),
new Point(SignRight, Top + ThinLineThickness),
new Point(SignLeft + LineThickness, Top + ThinLineThickness),
new Point(SignLeft + LineThickness, Bottom - ThinLineThickness),
new Point(SignRight, Bottom - ThinLineThickness),
new Point(SignRight, Bottom),
new Point(SignLeft, Bottom),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
}
void PaintRightSquare(DrawingContext dc)
{
PointCollection points = new PointCollection {
new Point(SignRight, Top),
new Point(SignRight, Bottom),
new Point(SignLeft, Bottom),
new Point(SignLeft, Bottom - ThinLineThickness),
new Point(SignRight - LineThickness, Bottom - ThinLineThickness),
new Point(SignRight - LineThickness, Top + ThinLineThickness),
new Point(SignLeft, Top + ThinLineThickness),
};
dc.FillPolylineGeometry(new Point(SignLeft, Top), points);
}
void PaintRound(DrawingContext dc)
{
if (Height < BracketBreakLimit)
{
if (SignType == BracketSignType.LeftRound)
{
signText.DrawTextTopLeftAligned(dc, new Point(SignLeft, Top));
}
else
{
signText.DrawTextTopRightAligned(dc, new Point(SignRight, Top));
}
}
else
{
if (SignType == BracketSignType.LeftRound)
{
signText.DrawTextTopLeftAligned(dc, new Point(SignLeft, Top));
signText2.DrawTextBottomLeftAligned(dc, new Point(SignLeft, Bottom));
dc.DrawLine(StandardPen, new Point(SignLeft + LineThickness * .5, Top + signText.Extent * .96), new Point(SignLeft + LineThickness * .5, Bottom - signText2.Extent * .96));
}
else
{
signText.DrawTextTopRightAligned(dc, new Point(SignRight, Top));
signText2.DrawTextBottomRightAligned(dc, new Point(SignRight, Bottom));
dc.DrawLine(StandardPen, new Point(SignRight - LineThickness * .5, Top + signText.Extent * .96), new Point(SignRight - LineThickness * .5, Bottom - signText2.Extent * .96));
}
}
}
void PaintCurly(DrawingContext dc)
{
if (Height < BracketBreakLimit)
{
signText.DrawTextTopLeftAligned(dc, new Point(SignLeft, Top));
}
else
{
if (SignType == BracketSignType.LeftCurly)
{
signText.DrawTextTopLeftAligned(dc, new Point(SignLeft + FontSize * .11, Top));
midText.DrawTextTopLeftAligned(dc, new Point(SignLeft, MidY - midText.Extent / 2));
signText2.DrawTextBottomLeftAligned(dc, new Point(SignLeft + FontSize * .11, Bottom));
dc.DrawLine(StandardPen, new Point(SignLeft + FontSize * .14, Top + signText.Extent * .94), new Point(SignLeft + FontSize * .14, MidY - midText.Extent * .46));
dc.DrawLine(StandardPen, new Point(SignLeft + FontSize * .14, MidY + midText.Extent * .46), new Point(SignLeft + FontSize * .14, Bottom - signText2.Extent * .94));
}
else
{
signText.DrawTextTopLeftAligned(dc, new Point(SignLeft, Top));
midText.DrawTextTopLeftAligned(dc, new Point(SignLeft + FontSize * .11, MidY - midText.Extent * .5));
signText2.DrawTextBottomLeftAligned(dc, new Point(SignLeft, Bottom));
dc.DrawLine(StandardPen, new Point(SignRight - FontSize * .16, Top + signText.Extent * .94), new Point(SignRight - FontSize * .16, MidY - midText.Extent * .46));
dc.DrawLine(StandardPen, new Point(SignRight - FontSize * .16, MidY + midText.Extent * .46), new Point(SignRight - FontSize * .16, Bottom - signText2.Extent * .94));
}
}
}
void PaintLeftAngle(DrawingContext dc)
{
PointCollection points = new PointCollection { new Point(SignLeft, MidY), new Point(SignRight, Bottom) };
dc.DrawPolyline(new Point(SignRight, Top), points, ThinPen);
}
void PaintRightAngle(DrawingContext dc)
{
PointCollection points = new PointCollection { new Point(SignRight, MidY), new Point(SignLeft, Bottom) };
dc.DrawPolyline(new Point(SignLeft, Top), points, ThinPen);
}
}
}
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