// genereate a list of blocks describing the characters
private List <CharacterDescriptor>[] generateCharacterDescriptorBlockList()
{
char currentCharacter, previousCharacter = '\0';
List <List <CharacterDescriptor> > characterBlockList = new List <List <CharacterDescriptor> >();
// initialize first block
List <CharacterDescriptor> characterBlock = null;
CodePageInfo cpi = new CodePageInfo(OutConfig.CodePage);
// get the difference between two characters required to create a new group
int differenceBetweenCharsForNewGroup = OutConfig.generateLookupBlocks ?
OutConfig.lookupBlocksNewAfterCharCount : int.MaxValue;
// iterate over characters, saving previous character each time
for (int charIndex = 0; charIndex < Characters.Length; ++charIndex)
{
// get character
currentCharacter = Characters[charIndex].Character;
// check if this character is too far from the previous character and it isn't the first char
if (cpi.GetCharacterDifferance(previousCharacter, currentCharacter) < differenceBetweenCharsForNewGroup && previousCharacter != '\0')
{
// it may not be far enough to generate a new group but it still may be non-sequential
// in this case we need to generate place holders
int previousCharacterOffset = cpi.GetOffsetFromCharacter(previousCharacter);
int currentCharacterOffset = cpi.GetOffsetFromCharacter(currentCharacter);
for (int sequentialCharIndex = previousCharacterOffset + 1;
sequentialCharIndex < currentCharacterOffset;
++sequentialCharIndex)
{
// add the character placeholder to the current char block
characterBlock.Add(new CharacterDescriptor(this));
}
// fall through and add to current block
}
else
{
// done with current block, add to list (null is for first character which hasn't
// created a group yet)
if (characterBlock != null)
{
characterBlockList.Add(characterBlock);
}
// create new block
characterBlock = new List <CharacterDescriptor>();
}
// add to current block
characterBlock.Add(Characters[charIndex]);
// save previous char
previousCharacter = currentCharacter;
}
// done; add current block to list
characterBlockList.Add(characterBlock);
return(characterBlockList.ToArray());
}
// get font info from string
private void populateFontInfoFromCharacters()
{
// do nothing if no chars defined
if (Characters.Length == 0)
{
return;
}
// total offset
int charByteOffset = 0;
// set start char
FirstChar = CodePageInfo.GetLastValidCharacter();
LastChar = CodePageInfo.GetFirstValidCharacter();
// the fixed absolute character height
this.FixedAbsolutCharHeight = OutConfig.rotation.getAbsoluteCharacterDimensions(Characters[0].BitmapToGenerate.Size).Height;
// iterate through letter string
for (int charIdx = 0; charIdx < Characters.Length; ++charIdx)
{
// skip empty bitmaps
if (Characters[charIdx].BitmapToGenerate == null)
{
continue;
}
// get char
char currentChar = Characters[charIdx].Character;
// is this character smaller than start char?
if (CodePageInfo.GetCharacterDifferance(currentChar, FirstChar) > 0)
{
FirstChar = currentChar;
}
// is this character bigger than end char?
if (CodePageInfo.GetCharacterDifferance(currentChar, LastChar) < 0)
{
LastChar = currentChar;
}
// populate offset of character
Characters[charIdx].OffsetInBytes = charByteOffset;
// increment byte offset
charByteOffset += Characters[charIdx].DataLength;
}
}
