Symaptic: os/graphics/graphicstools/bitmapfonttools/src/FNTREADR.CPP@bde4ae8d615e

     1 /*

     2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * Header FNTREADR.CPP

    16 *

    17 */

    20 #include "FNTREADR.H"

    22 const int KMarkFirstCharacterInTypeface = -1;

    23 const int KBytesAddedForMetricIndex = 2;

    24 const int KBytesForIndexForFillCharacters = 2;

    25 const int KReportRateFrequencyInPercent = 10;

    27 // class CroppedValues

    29 class CroppedValues

    30 	{

    31 public:

    32 	CroppedValues();

    33 public:

    34 	int iTopCrop;

    35 	int iBottomCrop;

    36 	int iLeftCrop;

    37 	int iRightCrop;

    38 	};

    40 CroppedValues::CroppedValues()

    41  :	iTopCrop(0), iBottomCrop(0), iLeftCrop(0), iRightCrop(0)

    42 	{}

    44 // class FontReader

    46 FontReader::FontReader()

    47  :	Reader(),

    48 	iFontStore(),

    49 	iFontStoreFile(NULL),

    50 	iCharacterMetrics(NULL),

    51 	iCodeSection(NULL),

    52 	iFontBitmap(NULL),

    53 	iTypeface(NULL),

    54 	iReadFileFormat(ESymbianGDFFormat),

    55 	iBitmapWidth(0),

    56 	iBitmapHeight(0),

    57 	iDefaultXMoveInPixels(KUndefinedInteger),

    58 	iDefaultYMoveInPixels(KUndefinedInteger)

    59 	{

    60 	}

    62 boolean FontReader::Read(const String& aFilename)

    63 	{

    64 	iFileName = aFilename;

    65 	boolean state = Open(iFileName.Text());

    67 	while (!_EOF() && state)

    68 		{

    69 		if (IdentComp(IdentBDFFileHeader) || IdentComp(IdentBDFComment))

    70 			{

    71 			state = ReadBDFFontBitmap();

    72 			iReadFileFormat = EBDFFormat;

    73 			}

    74 		else if (IdentComp(IdentTypeface))

    75 			state = ReadTypeface();

    76 		else if (IdentComp(IdentFontStoreFile))

    77 			state = ReadFontStoreFile();

    78 		else

    79 			{

    80 			Error("Resource identifier expected");

    81 			state = efalse;

    82 			}

    83 		if (state)

    84 			state = NewLine();

    85 		}

    86 	return state;

    87 	}

    89 boolean FontReader::ReadMetricFromBDFCharacter(CharacterMetrics* aCharacterMetrics, CroppedValues* aCropped=  NULL)

    90 	{

    91 	int xMoveInPixels = 0;

    92 	int yMoveInPixels = 0;

    93 	int bitmapXOffset = 0;

    94 	int bitmapYOffset = 0;

    96 	boolean state = true;

    98 	if (iDefaultXMoveInPixels != KUndefinedInteger)

    99 		xMoveInPixels = iDefaultXMoveInPixels;

   100 	if (iDefaultYMoveInPixels != KUndefinedInteger)

   101 		yMoveInPixels = iDefaultYMoveInPixels;

   103 	while (!IdentComp(IdentBDFEndChar) && !_EOF() && state)

   104 		{

   105 		iLexAnal->ReadNextLine(); // Skip to next line

   106 		if (iLex->iType == ELexIdent)

   107 			{

   108 			if (IdentComp(IdentBDFCursorMove))

   109 				{

   110 				state = Number(xMoveInPixels);

   111 				if (state)

   112 					state = Number(yMoveInPixels);

   113 				}

   114 			else if (IdentComp(IdentBDFBitmapSizeAndDisplacement))

   115 				{

   116 				state = Number(iBitmapWidth);

   117 				if (state)

   118 					{

   119 					state = Number(iBitmapHeight);

   120 					state = Number(bitmapXOffset);

   121 					state = Number(bitmapYOffset);

   122 					}

   123 				}

   124 			else if (IdentComp(IdentBDFStartBitmap) && state)

   125 				{

   126 				int line = 0;

   127 				for (line = 0; line < iBitmapHeight; line++)

   128 					{

   129 					iLexAnal->ReadNextLine();	// Skip to next line

   130 					int bits = 0;

   131 					int bitOffset = 0;

   132 					int byteValue = 0;

   133 					for (bits = 0; bits < iBitmapWidth; bits++)

   134 						{

   135 						if (bitOffset == 0)

   136 							{

   137 							Lexical lex;

   138 							strncpy(lex.iText, &iLexAnal->iLine[bits >> 2], 2);

   139 							lex.iText[2] = '\0';

   140 							byteValue = lex.CovertStringToHex();

   141 							bitOffset = 8;

   142 							}

   144 						bitOffset--;

   145 						int bitValue = (byteValue >> bitOffset) & 1;

   146 						iBitArray[bits][line] = bitValue;

   147 						}

   148 					}

   149 				}

   150 			}

   151 		else

   152 			{

   153 			Error("Fontbitmap identifier expected");

   154 			state = efalse;

   155 			}

   156 		}

   158 	if (state)

   159 		state = NewLine();

   160 //

   161 // Make sure that bitmap is fully cropped

   162 //

   163 	int leftCrop = 0;

   164 	int rightCrop = 0;

   165 	int topCrop = 0;

   166 	int bottomCrop = 0;

   168 	int line = 0;

   169 	while (BitmapLineEmpty(line) && line < iBitmapHeight)

   170 		{

   171 		topCrop++;;

   172 		line++;

   173 		}

   174 	line = iBitmapHeight - 1;

   175 	while (BitmapLineEmpty(line) && line > topCrop)

   176 		{

   177 		bottomCrop++;

   178 		line--;

   179 		}

   180 	int column = iBitmapWidth - 1;

   181 	while (BitmapColumnEmpty(column) && column >= 0)

   182 		{

   183 		rightCrop++;

   184 		column--;

   185 		}

   186 	column = 0;

   187 	while (BitmapColumnEmpty(column) && column < iBitmapWidth - 1 - rightCrop)

   188 		{

   189 		leftCrop++;

   190 		column++;

   191 		}

   193 	int croppedBitmapHeight = iBitmapHeight - topCrop - bottomCrop;

   194 	int croppedBitmapWidth = iBitmapWidth - leftCrop - rightCrop;

   195 	int croppedLeftAdjust = bitmapXOffset + leftCrop;

   196 	int croppedRightAdjust = (xMoveInPixels - croppedLeftAdjust - croppedBitmapWidth);

   197 	int croppedAscent = croppedBitmapHeight + bitmapYOffset + bottomCrop;

   199 	if(state)

   200 		{

   201 		aCharacterMetrics->iAscentInPixels = (chardim) croppedAscent;

   202 		aCharacterMetrics->iHeightInPixels = (chardim) croppedBitmapHeight;

   203 		aCharacterMetrics->iLeftAdjustInPixels = (chardim) croppedLeftAdjust;

   204 		aCharacterMetrics->iMoveInPixels = (chardim) xMoveInPixels;

   205 		aCharacterMetrics->iRightAdjustInPixels = (chardim) croppedRightAdjust;

   206 		if (aCropped)

   207 			{

   208 			aCropped->iBottomCrop = bottomCrop;

   209 			aCropped->iLeftCrop = leftCrop;

   210 			aCropped->iRightCrop = rightCrop;

   211 			aCropped->iTopCrop = topCrop;

   212 			}

   213 		}

   214 	return state;

   215 	}

   217 boolean FontReader::ReadBDFCharacter(int /*aCode*/)

   218 	{

   219 	boolean state = etrue;

   220 	ObjectList<String*> character;

   221 	iCharacterMetrics = new CharacterMetrics;

   222 	CroppedValues* croppedValues = new CroppedValues;

   224 	state = ReadMetricFromBDFCharacter(iCharacterMetrics, croppedValues);

   226 	if (state)

   227 		{

   228 		BitmapOffset* offset = new BitmapOffset((uint16)iCodeSection->iCharactersBitmap.iByteList.Length());

   231 		iCodeSection->iCharactersBitmap.iByteList.NewByte();

   232 		iCodeSection->iCharacters.iBitmapOffsetList.Add(offset);

   234 		int index = iFontBitmap->iCharacterMetrics->Index(*iCharacterMetrics);

   235 		if (index == -1)

   236 			{

   237 			Error("Internal Compiler Error");

   238 			state = 0;

   239 			}

   240 		delete iCharacterMetrics;

   242 		if (state)

   243 			{

   244 			iCodeSection->iCharactersBitmap.AddIndex(index);

   246 			int line = croppedValues->iTopCrop;

   247 			boolean repeatLines;

   248 			int countLines = 0;

   249 			const int bottomCrop = croppedValues->iBottomCrop;

   250 			while (line < (iBitmapHeight - bottomCrop))

   251 				{

   252 				if ((line + 1) == (iBitmapHeight - bottomCrop))

   253 					{

   254 					repeatLines = efalse;

   255 					countLines = 1;

   256 					}

   257 				else if (!CompareBitmapLines(line, line + 1))

   258 					{

   259 					repeatLines = efalse;

   260 					for (countLines = 2; ((line + countLines) < (iBitmapHeight - bottomCrop)) && (countLines < KMaxNumberRepeatedLines); countLines++)

   261 						{

   262 						if (CompareBitmapLines(line + countLines - 1, line + countLines))

   263 							break;

   264 						}

   265 					}

   266 				else

   267 					{

   268 					repeatLines = etrue;

   269 					for (countLines = 2; ((line + countLines) < (iBitmapHeight - bottomCrop)) && (countLines < KMaxNumberRepeatedLines); countLines++)

   270 						{

   271 						if (!CompareBitmapLines(line, line + countLines))

   272 							break;

   273 						}

   274 					}

   275 				char bit;

   276 				if (repeatLines)

   277 					bit = 0;

   278 				else

   279 					bit = 1;

   280 				iCodeSection->iCharactersBitmap.iByteList.AddBit(bit);

   281 				for (int digit = 0; digit < 4; digit++)

   282 					{

   283 					bit = char(countLines >> digit);

   284 					iCodeSection->iCharactersBitmap.iByteList.AddBit(bit);

   285 					}

   286 				int lineFromTop;

   287 				for (lineFromTop = line; lineFromTop < (line + countLines); lineFromTop++)

   288 					{

   289 					if ((!repeatLines) || (lineFromTop == line))

   290 						{

   291 						int column;

   292 						for (column = croppedValues->iLeftCrop;

   293 							column < iBitmapWidth - croppedValues->iRightCrop; column++)

   294 							{

   295 							if (iBitArray[column][lineFromTop] == 1)

   296 								bit = 1;

   297 							else

   298 								bit = 0;

   299 							iCodeSection->iCharactersBitmap.iByteList.AddBit(bit);

   300 							}

   301 						}

   302 					}

   303 				line = line+countLines;

   304 				}

   305 			}

   306 		}

   307 	delete croppedValues;

   308 	return state;

   309 	}

   311 boolean FontReader::ReadBDFChars(const int aNumberOfGlyphsInFile, const int aMaxConsecutiveFillChars)

   312 	{

   313 	boolean state = etrue;

   314 	boolean newCodeSection = etrue;

   315 	int currentEncodingValue = 0; // each glyph has an unique encoding value

   316 	int lastEncodingValue = KMarkFirstCharacterInTypeface;

   317 	const int maxCharacterBitmapsize =

   318 		((KMaxBitmapWidth * KMaxBitmapHeight) / KNumberOfBitsInByte) + KBytesAddedForMetricIndex + KBytesForIndexForFillCharacters;

   320 	iCodeSection = NULL;

   321 	for (int numberGlyphsRead = 0; state && numberGlyphsRead < aNumberOfGlyphsInFile && !_EOF(); numberGlyphsRead++)

   322 		{

   323 		if (state && iCodeSection && iCodeSection->iCharactersBitmap.iByteList.Length() + maxCharacterBitmapsize >= KMaxSizeCodeSectionBitmap)

   324 			{

   325 			newCodeSection = etrue;

   326 			}

   328 		state = IdentComp(IdentBDFCharLabel);

   329 		if (!state)

   330 			ErrorIdentifierExpected(IdentBDFCharLabel);

   331 		if (state)

   332 			iLexAnal->ReadNextLine(); // Skip to next line

   334  		if (IdentComp(IdentBDFChar))

   335 			{

   336 			state = Number(currentEncodingValue);

   337 			}

   338 		else

   339 			{

   340 			state = efalse;

   341 			ErrorIdentifierExpected(IdentBDFChar);

   342 			}

   344 		if (KLowestPermittedCharacterEncoding > currentEncodingValue ||

   345 			KHighestPermittedCharacterEncoding < currentEncodingValue)

   346 			{

   347 			while (!IdentComp(IdentBDFEndChar) && !_EOF() && state)

   348 				// Skip fill character.

   349 				{

   350 				iLexAnal->ReadNextLine(); // Skip to next line

   351 				}

   352 			iLexAnal->ReadNextLine();

   353 			continue;

   354 			}

   356 		if (!iCodeSection || state && (currentEncodingValue > (lastEncodingValue + 1 + aMaxConsecutiveFillChars)))

   357 			{

   358 			// First character skip to new code section

   359 			newCodeSection = etrue;

   360 			}

   361 		else if (state && !newCodeSection && (currentEncodingValue > lastEncodingValue + 1))

   362 			{

   363 			WriteFillCharacters(currentEncodingValue - (lastEncodingValue + 1));

   364 			}

   365 		else if (state && currentEncodingValue <= lastEncodingValue)

   366 			{

   367 			Error("CodeSection out of sequence");

   368 			state = efalse;

   369 			}

   371 		if (state && newCodeSection)

   372 			{

   373 			if (iCodeSection)

   374 				{

   375 				iCodeSection->iEnd = (uint16) lastEncodingValue;

   376 				iFontBitmap->iCodeSectionList.Add(iCodeSection);

   377 				PrintoutCodeSection(iCodeSection);

   378 				}

   379 			iCodeSection = new BitmapCodeSection;

   380 			iCodeSection->iStart = (uint16) currentEncodingValue;

   381 			}

   383 		if (state)

   384 			state = ReadBDFCharacter(currentEncodingValue);

   386 		newCodeSection = efalse;

   387 		lastEncodingValue = currentEncodingValue;

   388 		}

   390 	if (state)

   391 		{

   392 		iCodeSection->iEnd = (uint16) lastEncodingValue;

   393 		iFontBitmap->iCodeSectionList.Add(iCodeSection);

   394 		PrintoutCodeSection(iCodeSection);

   395 		}

   397 	return state;

   398 	}

   400 void FontReader::PrintoutCodeSection(const BitmapCodeSection* aCodeSection) const

   401 	{

   402 	cout << hex << "Codesection 0x" << aCodeSection->iStart << ": 0x" << aCodeSection->iEnd << " read" << endl;

   403 	cout.flush();

   404 	}

   406 boolean FontReader::ReadBDFFontBitmap()

   407 	{

   408 	boolean state = etrue;

   409 	String label;

   410 	iFontBitmap = new FontBitmap;

   411 	int pointSize;

   412 	int xresolution; // in dots per inch

   413 	int yresolution; // in dots per inch

   414 	int widthBoundingBox = 0; // In pixels

   415 	int heightBoundingBox = 0; // in pixels

   416 	int boundingBoxXOffset = 0; // From origin (cursor position at baseline)

   417 	int boundingBoxYOffset = 0;	// From origin (cursor position at baseline)

   418 	int numberChars = 0;

   419 	String fontLabel;

   420 	int maxNormalCharWidth = KUndefinedInteger;

   421 	uid fontUid = KNullUid;

   422 	int posture = PostureUpright;

   423 	int strokeWeight = StrokeWeightNormal;

   424 	int defaultXMoveInPixels = KUndefinedInteger;

   425 	int defaultYMoveInPixels = KUndefinedInteger;

   426 	int writingDirection = 0;

   427 	int maxConsecutiveFillChars = 0;	// Max permitted "fill" characters with zero size to prevent

   428 										// break between code sections.

   429 	int fontAscent = 0;

   430 	int fontDescent = 0;

   432 	while (!IdentComp(IdentBDFNumChars) && !_EOF() && state)

   433 		{

   434 		iLexAnal->ReadNextLine(); // Skip to next line

   435 		if (iLex->iType == ELexIdent)

   436 			{

   437 			if (IdentComp(IdentBDFFontBitmap))

   438 				{

   439 				state = IdentCopy(fontLabel);

   440 				}

   441 			if (IdentComp(IdentBDFPointSize))

   442 				{

   443 				state = Number(pointSize);

   444 				if (state)

   445 					state = Number(xresolution);

   446 				if (state)

   447 					state = Number(yresolution);

   448 				}

   449 			else if (IdentComp(IdentBDFFontDesignBox))

   450 				{

   451 				state = Number(widthBoundingBox);

   452 				if (state)

   453 					state = Number(heightBoundingBox);

   454 				if (state)

   455 					state = Number(boundingBoxXOffset);

   456 				if (state)

   457 					state = Number(boundingBoxYOffset);

   458 				}

   459 			else if (IdentComp(IdentBDFWritingDirection))

   460 				{

   461 				Number(writingDirection);

   462 				if (writingDirection != 0)

   463 					cout << "Warning: Only left to right writing direction supported by EPOC32";

   464 				}

   465 			else if (IdentComp(IdentBDFCursorMove))

   466 				{

   467 				state = Number(defaultXMoveInPixels);

   468 				if (state)

   469 					state = Number(defaultYMoveInPixels);

   470 				}

   471 			else if (IdentComp(IdentBDFStartProperties))	// Adding additional properties

   472 				{

   473 				int numberOfProperties;

   474 				state = Number(numberOfProperties);

   475 				if (state)

   476 					state = NewLine();

   477 				{for (int properties = 0; properties < numberOfProperties && !_EOF() && state; properties++)

   478 					{

   479 					if (IdentComp(IdentBDFPropertyUid) || IdentComp(IdentUid))

   480 						state = Number(fontUid);

   481 					else if (IdentComp(IdentBDFPropertyBold) || IdentComp(IdentBold))

   482 						state = Number(strokeWeight);

   483 					else if (IdentComp(IdentBDFPropertyItalic) || IdentComp(IdentItalic))

   484 						state = Number(posture);

   485 					else if (IdentComp(IdentBDFPropertyFontAscent))

   486 						state = Number(fontAscent);

   487 					else if (IdentComp(IdentBDFPropertyFontDescent))

   488 						state = Number(fontDescent);

   489 					else if	(IdentComp(IdentBDFPropertyMaxNormalCharWidth) || IdentComp(IdentMaxNormalCharWidth))

   490 						state = Number(maxNormalCharWidth);

   491 					else if (IdentComp(IdentBDFPropertyMaxConsecutiveFillChars) || IdentComp(IdentMaxConsecutiveFillChars))

   492 						state = Number(maxConsecutiveFillChars);

   494 					iLexAnal->ReadNextLine();	// Skip to next line

   495 					}

   496 				}

   497 				if (state)

   498 					{

   499 					state = IdentComp(IdentBDFEndProperties);

   500 					if (!state)

   501 						ErrorIdentifierExpected(IdentBDFEndProperties);

   502 					}

   503 				}

   505 			}

   506 		else

   507 			{

   508 			Error("Identifier expected");

   509 			state = efalse;

   510 			}

   511 		}

   512 //

   513 // Check that maximum size of bitmap glyph not exceeded.

   514 //

   515 	if (widthBoundingBox>KMaxBitmapWidth || widthBoundingBox>KMaxBitmapWidth)

   516 		{

   517 		state = efalse;

   518 		cout << "Error: A font bounding box dimension exceeds maximum permitted in EPOC32";

   519 		}

   521 // Check that have everthing that we need and set some bitmap properties.

   523 	iFontBitmap->iMaxCharWidthInPixels = (chardim) widthBoundingBox;

   524 	if (fontAscent + fontDescent)

   525 		{

   526 		iFontBitmap->iCellHeightInPixels =( chardim) (fontAscent+fontDescent);

   527 		iFontBitmap->iAscentInPixels = (chardim) (fontAscent);

   528 		}

   529 	else

   530 		{	// Old file so use the old calculation

   531 		iFontBitmap->iCellHeightInPixels =( chardim) heightBoundingBox;

   532 		iFontBitmap->iAscentInPixels = (chardim) (heightBoundingBox + boundingBoxYOffset);

   533 		}

   534 	iFontBitmap->iPosture = (boolean) posture;

   535 	iFontBitmap->iStrokeWeight =( boolean) strokeWeight;

   536 	iFontBitmap->iLabel = fontLabel;

   538 	iDefaultXMoveInPixels = defaultXMoveInPixels;

   539 	iDefaultYMoveInPixels = defaultYMoveInPixels;

   541 	if (fontUid != KNullUid)

   542 		iFontBitmap->iUid = fontUid;

   543 	else

   544 		{

   545 		cerr << "Warning: No font bitmap UID specified in properties\n";

   546 		iFontBitmap->iUid = rand();

   547 		}

   549 	if (maxNormalCharWidth != KUndefinedInteger)

   550 		iFontBitmap->iMaxNormalCharWidthInPixels = (chardim) maxNormalCharWidth;

   551 	else

   552 		{

   553 		cerr << "Warning: No Maximum Normal Character Width specified in properties\n";

   554 		iFontBitmap->iMaxNormalCharWidthInPixels = iFontBitmap->iMaxCharWidthInPixels;

   555 		}

   557 	if (state)

   558 		state = Number(numberChars);

   559 	if (state)

   560 		state = NewLine();

   561 	else

   562 		return state;

   564 	// store position of Lex here and then set it back for the reading of the BDF chars!

   565 	int saveLineNo = iLexAnal->iLineNo;

   567 	ParseMetricsFromBDF(numberChars, maxConsecutiveFillChars);

   568 	// now reset the lexical

   569 	state = Open(iFileName.Text());

   570 	do

   571 		{

   572 		iLexAnal->Read();

   573 		}

   574 	while(saveLineNo > iLexAnal->iLineNo);

   576 	ReadBDFChars(numberChars, maxConsecutiveFillChars);

   578 	if (state)

   579 		{

   580 		state = IdentComp(IdentBDFEndFontBitmap);

   581 		if (!state)

   582 			Error("ENDFONT identifier expected");

   583 		}

   585 	int globalMove = KUndefinedInteger;

   586 	int monospaced= etrue;

   587 	if (state)

   588 		{

   589 		for (int i = 0; i <iFontBitmap->iCodeSectionList.Size(); i++)

   590 			{

   591 			const int end = iFontBitmap->iCharacterMetrics->iCharacterMetricsList.Size();

   592 			for (int j = 0; j< end; j++)

   593 				{

   594 				int move = iFontBitmap->iCharacterMetrics->iCharacterMetricsList[j]->Metric()->iMoveInPixels;

   595 				if (globalMove == KUndefinedInteger)

   596 					globalMove = move;

   597 				if (move > iFontBitmap->iMaxCharWidthInPixels)

   598 					iFontBitmap->iMaxCharWidthInPixels = (chardim) move;

   599 				if (globalMove!= move)

   600 					monospaced = efalse;

   601 				}

   602 			}

   603 		}

   604 	if (monospaced)

   605 		iFontBitmap->iIsProportional = efalse;

   606 	else

   607 		iFontBitmap->iIsProportional = etrue;

   609 	if (state)

   610 		{

   611 		iFontStore.AddFontBitmap(iFontBitmap);

   612 		cout << "FONT read\n";

   613 		}

   614 	else

   615 		delete iFontBitmap;

   616 	return state;

   617 	}

   619 boolean FontReader::ReadTypeface()

   620 	{

   621 	boolean state = etrue;

   622 	iTypeface = new FntTypeface;

   623 	String label;

   624 	int num;

   625 	state = IdentCopy(iTypeface->iLabel);

   626 	if (state)

   627 		state = NewLine();

   628 	while (!IdentComp(IdentEndTypeface) && !_EOF() && state)

   629 		{

   630 		if (IdentComp(IdentName))

   631 			{

   632 			state = StringCopy(iTypeface->iName);

   633 			while ((iLex->iType != ELexNL) && !_EOF() && state)

   634 				{

   635 				if (IdentComp(IdentTypefaceProportional))

   636 					iTypeface->iFlags = (boolean) (iTypeface->iFlags | Proportional);

   637 				else if (IdentComp(IdentSerif))

   638 					iTypeface->iFlags = (boolean) (iTypeface->iFlags | Serif);

   639 				else if (IdentComp(IdentSymbol))

   640 					iTypeface->iFlags = (boolean) (iTypeface->iFlags | Symbol);

   641 				else

   642 					{

   643 					Error("Typeface identifier or newline expected");

   644 					state = efalse;

   645 					}

   646 				}

   647 			}

   648 		else if (IdentComp(IdentFontBitmaps))

   649 			{

   650 			state = NewLine();

   651 			while (!IdentComp(IdentEndFontBitmaps) && !_EOF() && state)

   652 				{

   653 				TypefaceFontBitmap* typefacefontbitmap = NULL;

   654 				if (iLex->iType == ELexIdent)

   655 					{

   656 					state = IdentCopy(label);

   657 					FontBitmap* fontbitmap = (FontBitmap*) iFontStore.FindFontBitmap(label);

   658 					if (fontbitmap)

   659 						{

   660 						typefacefontbitmap = new TypefaceFontBitmap(fontbitmap);

   661 						state = etrue;

   662 						}

   663 					else

   664 						{

   665 						Error("Fontbitmap not found");

   666 						state = efalse;

   667 						}

   668 					}

   669 				else

   670 					{

   671 					uid fontbitmapuid;

   672 					state = Number(fontbitmapuid);

   673 					if (state)

   674 						typefacefontbitmap = new TypefaceFontBitmap(fontbitmapuid);

   675 					}

   676 				if (state)

   677 					{

   678 					while ((iLex->iType != ELexNL) && !_EOF() && state)

   679 						{

   680 						if (IdentComp(IdentWidthFactor))

   681 							{

   682 							state = Number(num);

   683 							typefacefontbitmap->iWidthFactor = (char) num;

   684 							}

   685 						else if (IdentComp(IdentHeightFactor))

   686 							{

   687 							state = Number(num);

   688 							typefacefontbitmap->iHeightFactor =( char) num;

   689 							}

   690 						else

   691 							{

   692 							Error("Typefacefontbitmap identifier or newline expected");

   693 							state = efalse;

   694 							}

   695 						}

   696 					if (state)

   697 						iTypeface->iTypefaceFontBitmapList.Add(typefacefontbitmap);

   698 					else

   699 						delete typefacefontbitmap;

   700 					}

   701 				if (state)

   702 					state = NewLine();

   703 				}

   704 			}

   705 		else

   706 			{

   707 			Error("Typeface identifier expected");

   708 			state = efalse;

   709 			}

   710 		if (state)

   711 			state = NewLine();

   712 		}

   713 	if (state)

   714 		{

   715 		iFontStore.AddTypeface(iTypeface);

   716 		cout << "Typeface read\n";

   717 		}

   718 	else

   719 		delete iTypeface;

   720 	return state;

   721 	}

   723 boolean FontReader::ReadFontStoreFile()

   724 	{

   725 	boolean state = etrue;

   726 	int num;

   727 	if (iFontStoreFile)

   728 		{

   729 		state = efalse;

   730 		Error("Fontstorefile already read");

   731 		}

   732 	else

   733 		{

   734 		iFontStoreFile = new FontStoreFile;

   735 		String label;

   736 		Record* typeface;

   737 		state = NewLine();

   738 		while (!IdentComp(IdentEndFontStoreFile) && !_EOF() && state)

   739 			{

   740 			if (IdentComp(IdentCollectionUid))

   741 				{

   742 				state = Number(iFontStoreFile->iCollectionUid);

   743 				}

   744 			else if (IdentComp(IdentKPixelAspectRatio))

   745 				{

   746 				state = Number(num);

   747 				if (state)

   748 					iFontStoreFile->iKPixelAspectRatio = num;

   749 				}

   750 			else if (IdentComp(IdentCopyrightInfo))

   751 				{

   752 				state = NewLine();

   753 				while (!IdentComp(IdentEndCopyrightInfo) && !_EOF() && state)

   754 					{

   755 					String* string = new String;

   756 					state = StringCopy(*string);

   757 					if (state)

   758 						iFontStoreFile->iCopyrightInfo.Add(string);

   759 					else

   760 						delete string;

   761 					state = NewLine();

   762 					}

   763 				}

   764 			else if (IdentComp(IdentTypefaces))

   765 				{

   766 				state = NewLine();

   767 				while (!IdentComp(IdentEndTypefaces) && !_EOF() && state)

   768 					{

   769 					state =IdentCopy(label);

   770 					if (state)

   771 						{

   772 						typeface = iFontStore.FindTypeface(label);

   773 						if (typeface)

   774 							{

   775 							iFontStoreFile->AddTypeface((FntTypeface*) typeface);

   776 							}

   777 						else

   778 							{

   779 							Error("Typeface not found");

   780 							state = efalse;

   781 							}

   782 						}

   783 					if (state)

   784 						state = NewLine();

   785 					}

   786 				}

   787 			else if (IdentComp(IdentExtraFontBitmaps))

   788 				{

   789 				state = NewLine();

   790 				while (!IdentComp(IdentEndExtraFontBitmaps) && !_EOF() && state)

   791 					{

   792 					state = IdentCopy(label);

   793 					FontBitmap* fontbitmap = (FontBitmap*) iFontStore.FindFontBitmap(label);

   794 					if (fontbitmap)

   795 						{

   796 						iFontStoreFile->AddFontBitmap((FontBitmap*) fontbitmap);

   797 						}

   798 					else

   799 						{

   800 						Error("Fontbitmap not found");

   801 						state = efalse;

   802 						}

   803 					if (state)

   804 						state = NewLine();

   805 					}

   806 				}

   807 			else

   808 				{

   809 				Error("Fontstorefile identifier expected");

   810 				state = efalse;

   811 				}

   812 			if (state)

   813 				state = NewLine();

   814 			}

   815 		if (state)

   816 			{

   817 			iFontStore.AddFontStoreFile(iFontStoreFile);

   818 			cout << "Fontstorefile read\n";

   819 			}

   820 		else

   821 			delete iFontStoreFile;

   822 		}

   823 	return state;

   824 	}

   826 int FontReader::Store(const String& aFilename)

   827 	{

   828 	boolean state = etrue;

   829 	if (!iFontStoreFile)

   830 		{

   831 		state = efalse;

   832 		Error("No fontstore file record");

   833 		}

   834 	else

   835 		state = iFontStore.Store(aFilename);

   836 	return state;

   837 	}

   839 boolean FontReader::CharLine(String& aCharLine)

   840 	{

   841 	boolean state = etrue;

   842 	while (state && (iLex->iType != ELexNL))

   843 		{

   844 		char ch;

   845 		state = Operator(ch);

   846 		if (state)

   847 			{

   848 			if ((ch == '.') || (ch == '*'))

   849 				aCharLine += ch;

   850 			else

   851 				{

   852 				state = efalse;

   853 				Error("Operator '.' or '*' expected");

   854 				}

   855 			}

   856 		}

   857 	return state;

   858 	}

   860 void FontReader::ErrorIdentifierExpected(const String& aIdentifier)

   861 	{

   862 	cerr << "Error: Identifier Expected " << aIdentifier;

   863 	iLexAnal->Report();

   864 	while ((iLex->iType != ELexNL) && (iLex->iType != ELexEOF))

   865 		iLexAnal->Read();

   866 	}

   868 boolean FontReader::CompareBitmapLines(int aLine1, int aLine2)

   869 	{

   871 	int column = 0;

   872 	boolean identical = etrue;

   873 	for (column=0; column < iBitmapWidth; column++)

   874 		{

   875 		if (iBitArray[column][aLine1] != iBitArray[column][aLine2])

   876 			{

   877 			identical = efalse;

   878 			break;

   879 			}

   880 		}

   882 	return identical;

   883 	}

   885 boolean FontReader::BitmapLineEmpty(int aLine)

   886 	{

   888 	int column = 0;

   889 	boolean empty = etrue;

   890 	for (column = 0; column < iBitmapWidth; column++)

   891 		{

   892 		if (iBitArray[column][aLine] != 0)

   893 			{

   894 			empty = efalse;

   895 			break;

   896 			}

   897 		}

   899 	return empty;

   900 	}

   902 boolean FontReader::BitmapColumnEmpty(int aColumn)

   903 	{

   905 	int line = 0;

   906 	boolean empty = etrue;

   907 	for (line = 0; line < iBitmapHeight; line++)

   908 		{

   909 		if (iBitArray[aColumn][line] != 0)

   910 			{

   911 			empty = efalse;

   912 			break;

   913 			}

   914 		}

   916 	return empty;

   917 	}

   919 void FontReader::WriteFillCharacters(int aNumberConsecutive)

   920 	{

   921 	for (int counter = 0; counter < aNumberConsecutive; counter++)

   922 		{

   923 		BitmapOffset* offset = new BitmapOffset(KFillCharacterOffset);

   924 		iCodeSection->iCharacters.iBitmapOffsetList.Add(offset);

   925 		}

   926 	}

   928 boolean FontReader::ParseMetricsFromBDF(int aNumberCharsInFile, int aMaxConsecutiveFillChars)

   929 	{

   930 	boolean state = etrue;

   931 	int character = 0;

   932 	int numberCharactersRead;

   933 	int lastCharacter = KMarkFirstCharacterInTypeface;

   934 	int reportRate = ((aNumberCharsInFile - 1) / KReportRateFrequencyInPercent) + 1;

   936 	CharacterMetrics* metric = 0;

   938 	cout << "Analysing character metrics...\n";

   939 	cout.flush();

   941 	for (numberCharactersRead = 0; numberCharactersRead < aNumberCharsInFile && !_EOF() && state; numberCharactersRead++)

   942 		{

   943 		state = IdentComp(IdentBDFCharLabel);

   944 		if (!state)

   945 			ErrorIdentifierExpected(IdentBDFCharLabel);

   946 		if (state)

   947 			iLexAnal->ReadNextLine();	// Skip to next line

   949 		if (IdentComp(IdentBDFChar))

   950 			{

   951 			state = Number(character);

   952 			}

   953 		else

   954 			{

   955 			state = efalse;

   956 			ErrorIdentifierExpected(IdentBDFChar);

   957 			}

   959 		if (character < KLowestPermittedCharacterEncoding || character > KHighestPermittedCharacterEncoding)

   960 			{

   961 			while (!IdentComp(IdentBDFEndChar) && !_EOF() && state)

   962 				// Skip fill character.

   963 				{

   964 				iLexAnal->ReadNextLine(); // Skip to next line

   965 				}

   966 				iLexAnal->ReadNextLine();

   967 			continue;

   968 			}

   970 		if (character<lastCharacter)

   971 			{

   972 			Error("CodeSection out of sequence");

   973 			state = efalse;

   974 			}

   976 		if ((character > lastCharacter + 1)

   977 			&& (character <= lastCharacter + 1 + aMaxConsecutiveFillChars) && state)

   978 			{

   979 			// Would result in fill characters being used if not at end of code section!

   980 			metric = new CharacterMetrics;

   981 			metric->iLeftAdjustInPixels = (chardim)0;

   982 			metric->iMoveInPixels = (chardim)0;

   983 			metric->iRightAdjustInPixels = (chardim)0;

   984 			metric->iAscentInPixels = (chardim)0;

   985 			metric->iHeightInPixels = (chardim)0;

   986 			iFontBitmap->iCharacterMetrics->AddOrIncrementMetric(*metric);

   987 			delete metric;

   988 			metric = 0;

   989 			}

   991 		if (state)

   992 			{

   993 			metric = new CharacterMetrics;

   994 			state = ReadMetricFromBDFCharacter(metric);

   995 			iFontBitmap->iCharacterMetrics->AddOrIncrementMetric(*metric);

   996 			delete metric;

   997 			metric = 0;

   998 			}

  1000 		lastCharacter = character;

  1001 		if(numberCharactersRead == ((numberCharactersRead / reportRate) * reportRate))

  1002 			{

  1003 			cout << "Done " << (numberCharactersRead * 100 / aNumberCharsInFile) << "% \n";

  1004 			cout.flush();

  1005 			}

  1006 		}

  1008 	if (state)

  1009 		{

  1010 		iFontBitmap->iCharacterMetrics->SortMetricsByFrequency();

  1011 		}

  1012 	return state;

  1013 	}

author	sl@SLION-WIN7.fritz.box
	Fri, 15 Jun 2012 03:10:57 +0200
changeset 0	bde4ae8d615e
permissions	-rw-r--r--