protected override void OnLoad(
)
{
LoadEncoding();
// Glyph widths.
{
glyphWidths = new Dictionary <int, int>();
PdfArray glyphWidthObjects = (PdfArray)CIDFontDictionary.Resolve(PdfName.W);
if (glyphWidthObjects != null)
{
for (IEnumerator <PdfDirectObject> iterator = glyphWidthObjects.GetEnumerator(); iterator.MoveNext();)
{
//TODO: this algorithm is valid only in case cid-to-gid mapping is identity (see cidtogid map)!!
/*
* NOTE: Font widths are grouped in one of the following formats [PDF:1.6:5.6.3]:
* 1. startCID [glyphWidth1 glyphWidth2 ... glyphWidthn]
* 2. startCID endCID glyphWidth
*/
int startCID = ((PdfInteger)iterator.Current).RawValue;
iterator.MoveNext();
PdfDirectObject glyphWidthObject2 = iterator.Current;
if (glyphWidthObject2 is PdfArray) // Format 1: startCID [glyphWidth1 glyphWidth2 ... glyphWidthn].
{
int cID = startCID;
foreach (PdfDirectObject glyphWidthObject in (PdfArray)glyphWidthObject2)
{
glyphWidths[cID++] = ((IPdfNumber)glyphWidthObject).IntValue;
}
}
else // Format 2: startCID endCID glyphWidth.
{
int endCID = ((PdfInteger)glyphWidthObject2).RawValue;
iterator.MoveNext();
int glyphWidth = ((IPdfNumber)iterator.Current).IntValue;
for (int cID = startCID; cID <= endCID; cID++)
{
glyphWidths[cID] = glyphWidth;
}
}
}
}
}
// Default glyph width.
{
// PK 2017-03-08 - Changed type from PdfInteger to IPdfNumber to avoid ClassCastException and allow for more granular font sizes
IPdfNumber defaultWidthObject = (IPdfNumber)BaseDataObject[PdfName.DW];
if (defaultWidthObject != null)
{
DefaultWidth = defaultWidthObject.IntValue;
}
}
}
protected override void OnLoad(
)
{
LoadEncoding();
// Glyph widths.
if (glyphWidths == null)
{
glyphWidths = new Dictionary <int, int>();
PdfArray glyphWidthObjects = (PdfArray)BaseDataObject.Resolve(PdfName.Widths);
if (glyphWidthObjects != null)
{
ByteArray charCode = new ByteArray(
new byte[]
{ (byte)((PdfInteger)BaseDataObject[PdfName.FirstChar]).IntValue }
);
foreach (PdfDirectObject glyphWidthObject in glyphWidthObjects)
{
int glyphWidth = ((IPdfNumber)glyphWidthObject).IntValue;
if (glyphWidth > 0)
{
int code;
if (codes.TryGetValue(charCode, out code))
{ // [Zmiana]
try
{
glyphWidths[glyphIndexes[code]] = glyphWidth;
}
catch (Exception)
{
}
}
}
charCode.Data[0]++;
}
}
}
// Default glyph width.
{
IPdfNumber widthObject = (IPdfNumber)GetDescriptorValue(PdfName.AvgWidth);
if (widthObject != null)
{
AverageWidth = widthObject.IntValue;
}
widthObject = (IPdfNumber)GetDescriptorValue(PdfName.MissingWidth);
if (widthObject != null)
{
DefaultWidth = widthObject.IntValue;
}
}
}
/**
* <summary>Gets the direction corresponding to the given value.</summary>
*/
public static RotationEnum Get(IPdfNumber value)
{
if (value == null)
{
return(RotationEnum.Downward);
}
int normalizedValue = (int)(Math.Round(value.DoubleValue / 90) % 4) * 90;
if (normalizedValue < 0)
{
normalizedValue += 360 * (int)Math.Ceiling(-normalizedValue / 360d);
}
return((RotationEnum)normalizedValue);
}
public bool Remove(
Page page
)
{
PdfDictionary pageData = page.BaseDataObject;
// Get the parent tree node!
PdfDirectObject parent = pageData[PdfName.Parent];
PdfDictionary parentData = (PdfDictionary)File.Resolve(parent);
// Get the parent's page collection!
PdfDirectObject kids = parentData[PdfName.Kids];
PdfArray kidsData = (PdfArray)File.Resolve(kids);
// Remove the page!
kidsData.Remove(page.BaseObject);
bool updateParent = !File.Update(kids); // Try to update the page collection.
// Unbind the page from its parent!
pageData[PdfName.Parent] = null;
page.Update();
// Decrementing the pages counters...
do
{
// Get the page collection counter!
PdfDirectObject count = parentData[PdfName.Count];
IPdfNumber countData = (IPdfNumber)File.Resolve(count);
// Decrement the counter at the current level!
countData.RawValue--;
updateParent |= !File.Update(count); // Try to update the counter.
// Is the parent tree node to be updated?
/*
* NOTE: It avoids to update the parent tree node if its modified fields are all
* indirect objects which perform independent updates.
*/
if (updateParent)
{
File.Update(parent);
updateParent = false; // Reset.
}
// Iterate upward!
parent = parentData[PdfName.Parent];
parentData = (PdfDictionary)File.Resolve(parent);
} while(parent != null);
return(true);
}
/**
* <summary>Gets the pattern corresponding to the specified components.</summary>
*/
public static LineDash Get(PdfArray dashArray, IPdfNumber dashPhase)
{
if (dashArray == null)
{
return(null);
}
// Dash array.
double[] dashArrayValue = new double[dashArray.Count];
for (int index = 0, length = dashArrayValue.Length; index < length; index++)
{
dashArrayValue[index] = ((IPdfNumber)dashArray[index]).DoubleValue;
}
// Dash phase.
double dashPhaseValue = dashPhase != null ? ((IPdfNumber)dashPhase).DoubleValue : 0;
return(new LineDash(dashArrayValue, dashPhaseValue));
}
/**
* <summary>Gets the pattern corresponding to the specified components.</summary>
*/
public static LineDash Get(PdfArray dashArray, IPdfNumber dashPhase)
{
if (dashArray == null)
{
return(null);
}
// Dash array.
var dashArrayValue = new float[dashArray.Count];
for (int index = 0, length = dashArrayValue.Length; index < length; index++)
{
dashArrayValue[index] = dashArray.GetFloat(index);
}
// Dash phase.
var dashPhaseValue = dashPhase != null ? dashPhase.FloatValue : 0;
return(new LineDash(dashArrayValue, dashPhaseValue));
}
protected override void OnLoad(
)
{
LoadEncoding();
// Glyph widths.
if (glyphWidths == null)
{
glyphWidths = new Dictionary <int, int>();
PdfArray glyphWidthObjects = (PdfArray)BaseDataObject.Resolve(PdfName.Widths);
if (glyphWidthObjects != null)
{
ByteArray charCode = new ByteArray(
new byte[]
{ (byte)((PdfInteger)BaseDataObject[PdfName.FirstChar]).IntValue }
);
foreach (PdfDirectObject glyphWidthObject in glyphWidthObjects)
{
int glyphWidth = ((IPdfNumber)glyphWidthObject).IntValue;
if (glyphWidth > 0)
{
int code;
if (codes.TryGetValue(charCode, out code))
{
glyphWidths[glyphIndexes[code]] = glyphWidth;
}
}
charCode.Data[0]++;
}
}
}
// Default glyph width.
{
PdfDictionary descriptor = Descriptor;
if (descriptor != null)
{
IPdfNumber defaultGlyphWidthObject = (IPdfNumber)descriptor[PdfName.MissingWidth];
defaultGlyphWidth = (defaultGlyphWidthObject != null ? defaultGlyphWidthObject.IntValue : 0);
}
}
}
/**
* Add a collection of pages at the specified position.
* <param name="index">Addition position. To append, use value -1.</param>
* <param name="pages">Collection of pages to add.</param>
*/
private void CommonAddAll <TPage>(
int index,
ICollection <TPage> pages
)
where TPage : Page
{
PdfDirectObject parent;
PdfDictionary parentData;
PdfDirectObject kids;
PdfArray kidsData;
int offset;
// Append operation?
if (index == -1) // Append operation.
{
// Get the parent tree node!
parent = BaseObject;
parentData = BaseDataObject;
// Get the parent's page collection!
kids = parentData[PdfName.Kids];
kidsData = (PdfArray)File.Resolve(kids);
offset = 0; // Not used.
}
else // Insert operation.
{
// Get the page currently at the specified position!
Page pivotPage = this[index];
// Get the parent tree node!
parent = pivotPage.BaseDataObject[PdfName.Parent];
parentData = (PdfDictionary)File.Resolve(parent);
// Get the parent's page collection!
kids = parentData[PdfName.Kids];
kidsData = (PdfArray)File.Resolve(kids);
// Get the insertion's relative position within the parent's page collection!
offset = kidsData.IndexOf(pivotPage.BaseObject);
}
// Adding the pages...
foreach (Page page in pages)
{
// Append?
if (index == -1) // Append.
{
// Append the page to the collection!
kidsData.Add(page.BaseObject);
}
else // Insert.
{
// Insert the page into the collection!
kidsData.Insert(
offset++,
page.BaseObject
);
}
// Bind the page to the collection!
page.BaseDataObject[PdfName.Parent] = parent;
page.Update();
}
bool updateParent = !File.Update(kids); // Try to update the page collection.
// Incrementing the pages counters...
do
{
// Get the page collection counter!
PdfDirectObject count = parentData[PdfName.Count];
IPdfNumber countData = (IPdfNumber)File.Resolve(count);
// Increment the counter at the current level!
countData.RawValue += pages.Count;
updateParent |= !File.Update(count); // Try to update the page counter.
// Is the parent tree node to be updated?
/*
* NOTE: It avoids to update the parent tree node if its modified fields are all
* indirect objects which perform independent updates.
*/
if (updateParent)
{
File.Update(parent);
updateParent = false; // Reset.
}
// Iterate upward!
parent = parentData[PdfName.Parent];
parentData = (PdfDictionary)File.Resolve(parent);
} while(parent != null);
}
