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.H

    16 *

    17 */

    18 

    19 

    20 #ifndef __FNTREADR_H__

    21 #define __FNTREADR_H__

    22 

    23 #include "FNTRECRD.H"

    24 #include "LST.H"

    25 #include "READER.H"

    26 /**

    27 @internalComponent

    28 */

    29 const uint16 KMaxSizeCodeSectionBitmap = 0x7FFF;

    30 const int KMaxBitmapWidth = 0x7f;

    31 const int KMaxBitmapHeight = 0x7f;

    32 const int KNumberOfBitsInByte = 8; 

    33 /**

    34 @internalComponent

    35 */

    36 const int KLowestPermittedCharacterEncoding = 0x0000;

    37 const int KHighestPermittedCharacterEncoding = 0xffff;

    38 /**

    39 @internalComponent

    40 */

    41 const int KMaxNumberRepeatedLines = 15;	// maximum number of repeated lines in font compiler

    42 

    43 /**

    44 KFillCharacterOffset is a significant offset that is set when a character within a code section is 

    45 not in the font. This means that for these fill characters nothing is stored within the binary

    46 data part of the code section

    47 @internalComponent

    48 */

    49 const uint16 KFillCharacterOffset = 0x7FFF;

    50 

    51 /**

    52 Resource identifiers

    53 @internalComponent

    54 */

    55 const String IdentFontBitmap("FontBitmap");

    56 const String IdentSTARTFONT("STARTFONT");

    57 const String IdentTypeface("Typeface");

    58 const String IdentFontStoreFile("FontStoreFile");

    59 /**

    60 Char identifiers

    61 @internalComponent

    62 */

    63 const String IdentAdjust("Adjust");

    64 const String IdentEndChar("EndChar");

    65 

    66 /**

    67 Codesection identifiers

    68 @internalComponent

    69 */

    70 const String IdentEndCodeSection("EndCodeSection");

    71 const String IdentChar("Char");

    72 

    73 /**

    74 Fontbitmap identifiers

    75 @internalComponent

    76 */

    77 const String IdentEndFontBitmap("EndFontBitmap");

    78 const String IdentUid("Uid");

    79 const String IdentBold("Bold");

    80 const String IdentItalic("Italic");

    81 const String IdentFontBitmapProportional("Proportional");

    82 const String IdentCellHeight("CellHeight");

    83 const String IdentAscent("Ascent");

    84 const String IdentMaxNormalCharWidth("MaxNormalCharWidth");

    85 const String IdentBitmapEncoding("BitmapEncoding");

    86 const String IdentCodeSection("CodeSection");

    87 const String IdentMaxConsecutiveFillChars("MaxConsecutiveFillChars"); 

    88 

    89 /**

    90 BDF CHAR identifiers

    91 @internalComponent

    92 */

    93 const String IdentBDFFileHeader("STARTFONT");

    94 const String IdentBDFComment("COMMENT");

    95 const String IdentBDFContentVersion("CONTENTVERSION");

    96 const String IdentBDFFontBitmap("FONT"); 

    97 const String IdentBDFPointSize("SIZE");

    98 const String IdentBDFFontDesignBox("FONTBOUNDINGBOX");

    99 const String IdentBDFWritingDirection("METRICSSET");

   100 const String IdentBDFStartProperties("STARTPROPERTIES");

   101 const String IdentBDFPropertyUid("UID");

   102 const String IdentBDFPropertyBold("BOLD");

   103 const String IdentBDFPropertyItalic("ITALIC");

   104 const String IdentBDFPropertyFontAscent("FONTASCENT");

   105 const String IdentBDFPropertyFontDescent("FONTDESCENT");

   106 const String IdentBDFPropertyMaxNormalCharWidth("MAXNORMALCHARWIDTH");

   107 const String IdentBDFPropertyMaxConsecutiveFillChars("MAXCONSECUTIVEFILLCHARS");

   108 const String IdentBDFEndProperties("ENDPROPERTIES");

   109 const String IdentBDFNumChars("CHARS");	// To be used as sanity check on BDF files

   110 const String IdentBDFCharLabel("STARTCHAR");

   111 const String IdentBDFChar("ENCODING");

   112 const String IdentBDFCursorMove("DWIDTH");

   113 const String IdentBDFBitmapSizeAndDisplacement("BBX");

   114 const String IdentBDFStartBitmap("BITMAP");

   115 const String IdentBDFEndChar("ENDCHAR");

   116 const String IdentBDFEndFontBitmap("ENDFONT");

   117 

   118 /**

   119 Typeface identifiers

   120 @internalComponent

   121 */

   122 const String IdentEndTypeface("EndTypeface");

   123 const String IdentName("Name");

   124 const String IdentTypefaceProportional("Proportional");

   125 const String IdentSerif("Serif");

   126 const String IdentSymbol("Symbol");

   127 const String IdentFontBitmaps("FontBitmaps");

   128 const String IdentWidthFactor("WidthFactor");

   129 const String IdentHeightFactor("HeightFactor");

   130 const String IdentEndFontBitmaps("EndFontBitmaps");

   131 

   132 /**

   133 Fontstorefile identifiers

   134 @internalComponent

   135 */

   136 const String IdentEndFontStoreFile("EndFontStoreFile");

   137 const String IdentFilename("Filename");

   138 const String IdentCollectionUid("CollectionUid");

   139 const String IdentKPixelAspectRatio("KPixelAspectRatio");

   140 const String IdentTypefaces("Typefaces");

   141 const String IdentEndTypefaces("EndTypefaces");

   142 const String IdentExtraFontBitmaps("FontBitmaps");

   143 const String IdentEndExtraFontBitmaps("EndFontBitmaps");

   144 const String IdentCopyrightInfo("CopyrightInfo");

   145 const String IdentEndCopyrightInfo("EndCopyrightInfo");

   146 

   147 class CroppedValues;

   148 

   149 class FontReader : public Reader

   150 /**

   151 @internalComponent

   152 */

   153 	{

   154 public:

   155 	enum TReadFileFormat

   156 		{

   157 		ESymbianGDFFormat,

   158 		EBDFFormat

   159 		};

   160 public:

   161 	FontReader();

   162 	boolean Read(const String& aFilename);

   163 	boolean ReadBDFCharacter(int aCode);

   164 	boolean ParseMetricsFromBDF(int aNumberCharsInFile, int aMaxConsecutiveFillChars);

   165 	boolean ReadMetricFromBDFCharacter(CharacterMetrics* aMetric, CroppedValues* aCropped);

   166 	boolean ReadBDFFontBitmap();

   167 	boolean ReadTypeface();

   168 	boolean ReadFontStoreFile();

   169 	int Store(const String& aFilename);

   170 	boolean CharLine(String& aCharLine);

   171 private:

   172 	boolean ReadBDFChars(const int aNumberOfGlyphsInFile, const int aMaxConsecutiveFillChars);

   173 	boolean DoMetricAnalysis(int& aHeight, int& aWidth, int& aLeftAdjust, int& aRightAdjust, int& aAscent);

   174 	void ErrorIdentifierExpected(const String& aIdentifier);

   175 	boolean CompareBitmapLines(int aLine1, int aLine2);

   176 	boolean BitmapLineEmpty(int aLine);

   177 	boolean BitmapColumnEmpty(int aColumn);

   178 	void WriteFillCharacters(int aNumberConsecutive);

   179 	void PrintoutCodeSection(const BitmapCodeSection* aCodeSection) const;

   180 private:

   181 	FontStore iFontStore;

   182 	FontStoreFile* iFontStoreFile;

   183 	CharacterMetrics* iCharacterMetrics;

   184 	BitmapCodeSection* iCodeSection;

   185 	FontBitmap* iFontBitmap;

   186 	FntTypeface* iTypeface;

   187 	TReadFileFormat iReadFileFormat;

   188 	int iBitArray[KMaxBitmapWidth][KMaxBitmapHeight];

   189 	int iBitmapWidth;

   190 	int iBitmapHeight;

   191 	int iDefaultXMoveInPixels;

   192 	int iDefaultYMoveInPixels;

   193 	String iFileName;

   194 	};

   195 

   196 #endif