public static void Run(Type1BuildCharContext context)
{
var x = context.Stack.PopBottom();
var y = context.Stack.PopBottom();
//context.CurrentPosition = new PdfPoint(x, y);
// TODO: need to investigate why odd behavior when the current point is actualy set.
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var first = context.Stack.PopTop();
var second = context.Stack.PopTop();
var result = second / first;
context.Stack.Push(result);
}
public static void Run(Type1BuildCharContext context)
{
var x = context.Stack.PopBottom();
var y = context.Stack.PopBottom();
context.CurrentPosition = new PdfPoint(x, y);
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var x = context.Stack.PopBottom();
var dx = context.Stack.PopBottom();
// Ignored
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var deltaX = context.Stack.PopBottom();
var x = context.CurrentPosition.X + deltaX;
context.Path.LineTo(x, context.CurrentPosition.Y);
context.CurrentPosition = new PdfPoint(x, context.CurrentPosition.Y);
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var deltaY = context.Stack.PopBottom();
var y = context.CurrentPosition.Y + deltaY;
context.Path.LineTo(context.CurrentPosition.X, y);
context.CurrentPosition = new PdfPoint(context.CurrentPosition.X, y);
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var leftSidebearingPointX = context.Stack.PopBottom();
var characterWidthVectorX = context.Stack.PopBottom();
context.LeftSideBearingX = leftSidebearingPointX;
context.WidthX = characterWidthVectorX;
context.CurrentPosition = new PdfPoint(leftSidebearingPointX, 0);
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var index = (int)context.Stack.PopTop();
var subroutine = context.Subroutines[index];
foreach (var command in subroutine.Commands)
{
command.Match(x => context.Stack.Push(x),
x => x.Run(context));
}
}
public static void Run(Type1BuildCharContext context)
{
var accentLeftSidebearingX = context.Stack.PopBottom();
var accentOriginX = context.Stack.PopBottom();
var accentOriginY = context.Stack.PopBottom();
var baseCharacterCode = context.Stack.PopBottom();
var accentCharacterCode = context.Stack.PopBottom();
var baseCharacter = context.GetCharacter((int)baseCharacterCode);
var accentCharacter = context.GetCharacter((int)accentCharacterCode);
// TODO: full seac implementation.
context.SetPath(baseCharacter);
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var index = (int)context.Stack.PopTop();
var subroutine = context.Subroutines[index];
foreach (var command in subroutine.Commands)
{
if (command.TryGetFirst(out var num))
{
context.Stack.Push(num);
}
else if (command.TryGetSecond(out var lazyCommand))
{
lazyCommand.Run(context);
}
}
}
public static void Run(Type1BuildCharContext context)
{
var deltaX = context.Stack.PopBottom();
var deltaY = context.Stack.PopBottom();
if (context.IsFlexing)
{
}
else
{
var x = context.CurrentPosition.X + deltaX;
var y = context.CurrentPosition.Y + deltaY;
context.CurrentPosition = new PdfPoint(x, y);
context.Path.MoveTo(x, y);
}
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var x = context.Stack.PopBottom();
var actualX = context.CurrentPosition.X + x;
var y = context.CurrentPosition.Y;
if (context.IsFlexing)
{
// TODO: flex support
}
else
{
context.CurrentPosition = new PdfPoint(actualX, y);
context.Path.MoveTo(actualX, y);
}
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var deltaX = context.Stack.PopBottom();
if (context.IsFlexing)
{
// not in the Type 1 spec, but exists in some fonts
context.AddFlexPoint(new PdfPoint(deltaX, 0));
}
else
{
var x = context.CurrentPosition.X + deltaX;
var y = context.CurrentPosition.Y;
context.CurrentPosition = new PdfPoint(x, y);
context.Path.MoveTo(x, y);
}
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var accentLeftSidebearingX = context.Stack.PopBottom();
var accentOriginX = context.Stack.PopBottom();
var accentOriginY = context.Stack.PopBottom();
var baseCharacterCode = (int)context.Stack.PopBottom();
var accentCharacterCode = (int)context.Stack.PopBottom();
// Both bchar and achar are codes that these characters are assigned in the Adobe StandardEncoding vector
var baseCharacterName = StandardEncoding.Instance.CodeToNameMap[baseCharacterCode];
var accentCharacterName = StandardEncoding.Instance.CodeToNameMap[accentCharacterCode];
var baseCharacter = context.GetCharacter(baseCharacterName);
var accentCharacter = context.GetCharacter(accentCharacterName);
// TODO: full seac implementation.
context.SetPath(baseCharacter);
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
var dx1 = context.Stack.PopBottom();
var dx2 = context.Stack.PopBottom();
var dy2 = context.Stack.PopBottom();
var dy3 = context.Stack.PopBottom();
var x1 = context.CurrentPosition.X + dx1;
var y1 = context.CurrentPosition.Y;
var x2 = x1 + dx2;
var y2 = y1 + dy2;
var x3 = x2;
var y3 = y2 + dy3;
context.Path.BezierCurveTo(x1, y1, x2, y2, x3, y3);
context.CurrentPosition = new PdfPoint(x3, y3);
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
// Do nothing
}
public static void Run(Type1BuildCharContext context)
{
var index = (int)context.Stack.PopTop();
// What it should do
var numberOfArguments = (int)context.Stack.PopTop();
var otherSubroutineArguments = new List <decimal>(numberOfArguments);
for (int j = 0; j < numberOfArguments; j++)
{
otherSubroutineArguments.Add(context.Stack.PopTop());
}
switch (index)
{
// Other subrs 0-2 implement flex
case FlexEnd:
{
context.IsFlexing = false;
if (context.FlexPoints.Count < 7)
{
throw new NotSupportedException("There must be at least 7 flex points defined by an other subroutine.");
}
context.ClearFlexPoints();
break;
}
case FlexBegin:
Debug.Assert(otherSubroutineArguments.Count == 0, "Flex begin should have no arguments.");
context.PostscriptStack.Clear();
context.PostscriptStack.Push(context.CurrentPosition.X);
context.PostscriptStack.Push(context.CurrentPosition.Y);
context.IsFlexing = true;
break;
case FlexMiddle:
Debug.Assert(otherSubroutineArguments.Count == 0, "Flex middle should have no arguments.");
context.PostscriptStack.Push(context.CurrentPosition.X);
context.PostscriptStack.Push(context.CurrentPosition.Y);
break;
// Other subrs 3 implements hint replacement
case HintReplacement:
if (otherSubroutineArguments.Count != 1)
{
throw new InvalidOperationException("The hint replacement subroutine only takes a single argument.");
}
context.PostscriptStack.Clear();
context.PostscriptStack.Push(otherSubroutineArguments[0]);
break;
default:
// Other subrs beyond the first 4 can safely be ignored.
context.PostscriptStack.Clear();
for (var i = 0; i < otherSubroutineArguments.Count; i++)
{
context.PostscriptStack.Push(otherSubroutineArguments[i]);
}
break;
}
}
public static void Run(Type1BuildCharContext context)
{
var index = (int)context.Stack.PopTop();
// What it should do
var numberOfArguments = (int)context.Stack.PopTop();
var otherSubroutineArguments = new List<double>(numberOfArguments);
for (int j = 0; j < numberOfArguments; j++)
{
otherSubroutineArguments.Add(context.Stack.PopTop());
}
switch (index)
{
// Other subrs 0-2 implement flex
case FlexEnd:
{
// https://github.com/apache/pdfbox/blob/2c23d8b4e3ad61852f0b6ee2b95b907eefba1fcf/fontbox/src/main/java/org/apache/fontbox/cff/Type1CharString.java#L339
context.IsFlexing = false;
if (context.FlexPoints.Count < 7)
{
throw new NotSupportedException("There must be at least 7 flex points defined by an other subroutine.");
}
// reference point is relative to start point
PdfPoint reference = context.FlexPoints[0];
reference = reference.Translate(context.CurrentPosition.X, context.CurrentPosition.Y);
// first point is relative to reference point
PdfPoint first = context.FlexPoints[1];
first = first.Translate(reference.X, reference.Y);
// make the first point relative to the start point
first = first.Translate(-context.CurrentPosition.X, -context.CurrentPosition.Y);
context.Stack.Push(first.X);
context.Stack.Push(first.Y);
context.Stack.Push(context.FlexPoints[2].X);
context.Stack.Push(context.FlexPoints[2].Y);
context.Stack.Push(context.FlexPoints[3].X);
context.Stack.Push(context.FlexPoints[3].Y);
RelativeRCurveToCommand.Run(context);
context.Stack.Push(context.FlexPoints[4].X);
context.Stack.Push(context.FlexPoints[4].Y);
context.Stack.Push(context.FlexPoints[5].X);
context.Stack.Push(context.FlexPoints[5].Y);
context.Stack.Push(context.FlexPoints[6].X);
context.Stack.Push(context.FlexPoints[6].Y);
RelativeRCurveToCommand.Run(context);
context.ClearFlexPoints();
break;
}
case FlexBegin:
Debug.Assert(otherSubroutineArguments.Count == 0, "Flex begin should have no arguments.");
context.PostscriptStack.Clear();
context.PostscriptStack.Push(context.CurrentPosition.X);
context.PostscriptStack.Push(context.CurrentPosition.Y);
context.IsFlexing = true;
break;
case FlexMiddle:
Debug.Assert(otherSubroutineArguments.Count == 0, "Flex middle should have no arguments.");
context.PostscriptStack.Push(context.CurrentPosition.X);
context.PostscriptStack.Push(context.CurrentPosition.Y);
break;
// Other subrs 3 implements hint replacement
case HintReplacement:
if (otherSubroutineArguments.Count != 1)
{
throw new InvalidOperationException("The hint replacement subroutine only takes a single argument.");
}
context.PostscriptStack.Clear();
context.PostscriptStack.Push(otherSubroutineArguments[0]);
break;
default:
// Other subrs beyond the first 4 can safely be ignored.
context.PostscriptStack.Clear();
for (var i = 0; i < otherSubroutineArguments.Count; i++)
{
context.PostscriptStack.Push(otherSubroutineArguments[i]);
}
break;
}
}
public static void Run(Type1BuildCharContext context)
{
var num = context.PostscriptStack.PopTop();
context.Stack.Push(num);
}
public static void Run(Type1BuildCharContext context)
{
context.Stack.Clear();
}
public static void Run(Type1BuildCharContext context)
{
context.Path.CloseSubpath();
context.Stack.Clear();
}
