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handle missing optional named destinations

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This commit is contained in:
Eliot Jones
2023-05-18 20:30:17 +01:00
parent fc59d1e58f
commit 2a1a09d1fa
1 changed files with 32 additions and 14 deletions
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46
src/UglyToad.PdfPig/Outline/Destinations/NamedDestinationsProvider.cs
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@@ -5,6 +5,7 @@
using Logging;
using Parser.Parts;
using System.Collections.Generic;
using System.Diagnostics;
using Tokenization.Scanner;
using Tokens;
@@ -83,6 +84,21 @@
return false;
}
decimal? GetPossibleEntry(int index)
{
if (index >= explicitDestinationArray.Length)
{
return null;
}
if (explicitDestinationArray[index] is NumericToken num)
{
return num.Data;
}
return null;
}
int pageNumber;
var pageToken = explicitDestinationArray[0];
@@ -136,11 +152,11 @@
if (destTypeToken.Equals(NameToken.XYZ))
{
// [page /XYZ left top zoom]
var left = explicitDestinationArray[2] as NumericToken;
var top = explicitDestinationArray[3] as NumericToken;
var left = GetPossibleEntry(2);
var top = GetPossibleEntry(3);
destination = new ExplicitDestination(pageNumber, ExplicitDestinationType.XyzCoordinates,
new ExplicitDestinationCoordinates(left?.Data, top?.Data));
new ExplicitDestinationCoordinates(left, top));
return true;
}
@@ -157,9 +173,9 @@
if (destTypeToken.Equals(NameToken.FitH))
{
// [page /FitH top]
var top = explicitDestinationArray[2] as NumericToken;
var top = GetPossibleEntry(2);
destination = new ExplicitDestination(pageNumber, ExplicitDestinationType.FitHorizontally,
new ExplicitDestinationCoordinates(null, top?.Data));
new ExplicitDestinationCoordinates(null, top));
return true;
}
@@ -167,9 +183,9 @@
if (destTypeToken.Equals(NameToken.FitV))
{
// [page /FitV left]
var left = explicitDestinationArray[2] as NumericToken;
var left = GetPossibleEntry(2);
destination = new ExplicitDestination(pageNumber, ExplicitDestinationType.FitVertically,
new ExplicitDestinationCoordinates(left?.Data));
new ExplicitDestinationCoordinates(left));
return true;
}
@@ -177,13 +193,13 @@
if (destTypeToken.Equals(NameToken.FitR))
{
// [page /FitR left bottom right top]
var left = explicitDestinationArray[2] as NumericToken;
var bottom = explicitDestinationArray[3] as NumericToken;
var right = explicitDestinationArray[4] as NumericToken;
var top = explicitDestinationArray[5] as NumericToken;
var left = GetPossibleEntry(2);
var bottom = GetPossibleEntry(3);
var right = GetPossibleEntry(4);
var top = GetPossibleEntry(5);
destination = new ExplicitDestination(pageNumber, ExplicitDestinationType.FitRectangle,
new ExplicitDestinationCoordinates(left?.Data, top?.Data, right?.Data, bottom?.Data));
new ExplicitDestinationCoordinates(left, top, right, bottom));
return true;
}
@@ -200,8 +216,9 @@
if (destTypeToken.Equals(NameToken.FitBH))
{
// [page /FitBH top]
var top = GetPossibleEntry(2);
destination = new ExplicitDestination(pageNumber, ExplicitDestinationType.FitBoundingBoxHorizontally,
new ExplicitDestinationCoordinates(null, (explicitDestinationArray[2] as NumericToken)?.Data));
new ExplicitDestinationCoordinates(null, top));
return true;
}
@@ -209,8 +226,9 @@
if (destTypeToken.Equals(NameToken.FitBV))
{
// [page /FitBV left]
var left = GetPossibleEntry(2);
destination = new ExplicitDestination(pageNumber, ExplicitDestinationType.FitBoundingBoxVertically,
new ExplicitDestinationCoordinates((explicitDestinationArray[2] as NumericToken)?.Data));
new ExplicitDestinationCoordinates(left));
return true;
}