1 /* |
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2 * Copyright (c) 1997-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "fontcomp.h" |
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20 |
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21 FscRead::FscRead(fstream& aFile,FontCompiler& aFontCompiler,Fxf* aFxf): |
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22 FontRead(aFile,aFontCompiler,aFxf) |
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23 {} |
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24 |
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25 int FscRead::DoCom(int aSecondPass) |
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26 /* |
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27 Takes a command and takes appropriate action |
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28 Returns -ve if an error occured |
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29 0 for OKAY |
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30 +ve number for new current character number |
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31 */ |
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32 { |
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33 int ret=0,num=0,neg=0; |
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34 int i=0; |
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35 for (;i<iInputBufLen;i++) |
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36 { |
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37 char chr=iInputBuf[i]; |
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38 if (num==0 && chr=='-') |
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39 neg=1; |
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40 else if (chr>='0' && chr<='9') |
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41 num=num*10+chr-'0'; |
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42 } |
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43 if (neg) |
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44 num= -num; |
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45 if (iInputBuf[1]=='c') |
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46 return(num); |
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47 if (aSecondPass) |
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48 ret=0; |
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49 else switch(iInputBuf[1]) |
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50 { |
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51 case 'd': |
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52 iFxf->descent=num; |
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53 break; |
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54 case 'a': |
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55 iFxf->nominal_ascent=num; |
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56 break; |
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57 case 'm': |
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58 iFxf->max_info_width=num; |
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59 break; |
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60 case 'h': |
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61 if ((iFxf->cell_height=num)>MAX_HEIGHT) |
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62 ret=Parameter; |
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63 if (iFxf->nominal_ascent==0) |
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64 iFxf->nominal_ascent=iFxf->cell_height-iFxf->descent; |
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65 break; |
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66 case 'n': /* Font data label name */ |
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67 { |
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68 int pos=0; |
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69 while(iInputBuf[pos]!=' ') |
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70 pos++; |
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71 while(iInputBuf[pos]==' ') |
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72 pos++; |
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73 if(iInputBufLen-pos>FONT_NAME_LEN) |
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74 return(FileFormat); |
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75 memcpy(iFxf->name,&iInputBuf[pos],iInputBufLen-pos); |
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76 (iFxf->name)[iInputBufLen-pos]=0; |
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77 } |
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78 break; |
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79 case 't': /* Font data typeface */ |
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80 { |
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81 int pos=0; |
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82 while(iInputBuf[pos]!=' ') |
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83 pos++; |
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84 while(iInputBuf[pos]==' ') |
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85 pos++; |
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86 if(iInputBufLen-pos>FONT_NAME_LEN) |
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87 return(FileFormat); |
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88 memcpy(iFxf->typeface,&iInputBuf[pos],iInputBufLen-pos); |
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89 (iFxf->typeface)[iInputBufLen-pos]=0; |
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90 } |
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91 break; |
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92 case 'b': |
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93 iFxf->iBold=1; |
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94 break; |
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95 case 'i': |
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96 iFxf->iItalic=1; |
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97 break; |
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98 case 'f': |
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99 // not a lot |
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100 break; |
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101 case 'v': |
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102 iFxf->iUid=num; |
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103 break; |
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104 case 'o': |
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105 iOverHang=num; |
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106 break; |
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107 case 'u': |
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108 iUnderHang=num; |
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109 break; |
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110 default: |
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111 ret=FileFormat; |
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112 break; |
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113 } |
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114 return(ret); |
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115 } |
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116 |
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117 char* FscRead::ScanLine(int& aLen) |
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118 /* Scan the input line for the first '0' or '1' character and return a descriptor pointing to it, |
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119 returns a zero length descriptor if not found. |
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120 */ |
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121 { |
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122 aLen=0; |
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123 if((iInputBuf[0]!='0' && iInputBuf[0]!='1') || iInputBufLen==0) |
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124 return(NULL); |
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125 while(iInputBuf[aLen]=='0' || iInputBuf[aLen]=='1') |
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126 aLen++; |
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127 return(iInputBuf); |
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128 } |
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129 |
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130 |
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131 int FscRead::ReadLine() |
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132 { |
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133 int pos=0; |
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134 while(iFileBuf[iFileBufPos+pos]!='\n' && iFileBufPos+pos<iFileBufLen) |
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135 pos++; |
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136 if(iFileBufPos+pos==iFileBufLen) return(1); |
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137 memcpy(iInputBuf,&iFileBuf[iFileBufPos],pos); |
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138 iInputBufLen=pos-1; |
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139 iFileBufPos+=pos+1; |
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140 if(iFileBufPos>=iFileBufLen) return(1); |
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141 return(0); |
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142 } |
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143 |
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144 FontRead::FontRead(fstream& aFile,FontCompiler& aFontCompiler,Fxf* aFxf): |
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145 iInputFile(aFile), |
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146 iFontCompiler(&aFontCompiler), |
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147 iFxf(aFxf) |
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148 { |
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149 } |
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150 |
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151 int FscRead::ReadFont() |
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152 { |
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153 iInputFile.seekg(0,ios::end); |
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154 iFileBufLen=iInputFile.tellg(); |
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155 iInputFile.seekg(0); |
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156 iFileBufPos=0; |
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157 iFileBuf=new char[iFileBufLen]; |
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158 iInputFile.read(iFileBuf,iFileBufLen); |
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159 int ret=Pass1(); |
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160 if(ret) return(ret); |
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161 return(Pass2()); |
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162 } |
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163 |
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164 int FscRead::Pass1() |
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165 { |
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166 int n_row=0; // counts row in character picture |
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167 int ret=0; |
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168 int specChr=0; |
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169 int isCharBody=0; |
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170 int lastLine=0; |
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171 int widthofi=0; |
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172 int widthofM=0; |
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173 |
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174 iFxf->MaxChrWidth=0; |
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175 iFxf->cell_height=0; |
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176 iFxf->UlinePos=0; |
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177 iFxf->UlineThickness=0; |
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178 iFxf->nominal_ascent=0; |
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179 iFxf->descent=0; |
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180 iFxf->chr_seg=0; |
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181 iFxf->FirstChr=0; |
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182 iFxf->n_chars=0; |
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183 iFxf->max_info_width=0; |
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184 iFxf->flags=0; |
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185 iFxf->special=0; |
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186 iFxf->ByteWid=0; |
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187 iFxf->UseWords=0; |
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188 iFxf->iBold=0; |
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189 iFxf->iItalic=0; |
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190 iFxf->iProportional=0; |
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191 iFxf->iSerif=0; |
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192 iFxf->iSymbol=0; |
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193 iFxf->iUid=0; |
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194 |
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195 iUnderHang=0; |
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196 iOverHang=0; |
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197 iChar=new FcmCharHead[MAX_CHARS]; |
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198 for(int letter=0;letter<MAX_CHARS;letter++) |
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199 iFxf->chr[letter]=NULL; |
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200 //************************************************** |
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201 // First pass. Read header info & character widths * |
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202 //************************************************** |
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203 do |
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204 { |
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205 int width=0; // width of current character picture |
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206 |
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207 lastLine=ReadLine(); |
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208 isCharBody=0; |
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209 if (iInputBufLen>0 && iInputBuf[0]=='*') |
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210 { |
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211 if ((ret=DoCom(0))<0) |
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212 return(FileFormat); |
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213 else if (ret) |
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214 { |
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215 for(;iFxf->n_chars<ret;iFxf->n_chars++) |
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216 iFxf->chr[iFxf->n_chars]=NULL; |
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217 specChr=iFxf->n_chars; |
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218 } |
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219 } |
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220 else |
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221 { |
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222 int len=0; |
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223 char* ptr=ScanLine(len); |
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224 if (len) |
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225 { |
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226 isCharBody=1; |
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227 if (iFxf->FirstChr<0) |
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228 iFxf->FirstChr=iFxf->n_chars; |
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229 if (n_row==0) |
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230 { |
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231 for (width=0;width<len && (ptr[width]=='0' || ptr[width]=='1');width++); |
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232 if (iFxf->n_chars>255) |
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233 return(FileFormat); |
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234 iFxf->chr[iFxf->n_chars]=iChar; |
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235 iFxf->n_chars++; |
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236 iChar->xOffset= -iUnderHang; |
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237 iChar->width=width; |
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238 iChar->ByteWid=((iChar->width+15)>>3)&(~1); |
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239 iChar->move=width-iUnderHang-iOverHang; |
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240 if(iFxf->n_chars=='i') |
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241 widthofi=iChar->move; |
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242 else if(iFxf->n_chars=='M') |
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243 widthofM=iChar->move; |
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244 iUnderHang=0; |
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245 iOverHang=0; |
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246 if (width>iFxf->MaxChrWidth) |
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247 iFxf->MaxChrWidth=width; |
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248 } |
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249 n_row++; |
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250 } |
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251 } |
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252 if ((n_row!=0 && !isCharBody) || (lastLine && isCharBody)) |
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253 { |
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254 if (n_row>iFxf->cell_height) |
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255 return(FileFormat); |
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256 iChar->height=n_row; |
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257 iChar->yOffset=iFxf->cell_height-iFxf->descent; |
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258 specChr++; |
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259 n_row=0; |
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260 width=0; |
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261 iChar++; |
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262 } |
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263 } while(!lastLine); |
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264 if (iFxf->cell_height==0) |
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265 return(FileFormat); |
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266 if(widthofi && widthofM) |
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267 iFxf->iProportional=(widthofi!=widthofM); |
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268 return(NoError); |
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269 } |
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270 |
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271 int FscRead::Pass2() |
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272 /******************************************************/ |
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273 /* Second pass. Read in actual picture data this time */ |
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274 /******************************************************/ |
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275 { |
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276 unsigned int bit; // Used to set bits in pic |
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277 int ret,chNum; |
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278 int n_row; // counts row in character picture |
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279 int offset=0; |
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280 int isCharBody; |
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281 int lastLine; |
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282 |
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283 iFileBufPos=0; |
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284 n_row=0; |
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285 chNum=0; |
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286 do { |
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287 lastLine=ReadLine(); |
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288 isCharBody=0; |
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289 if (iInputBufLen>0 && iInputBuf[0]=='*') |
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290 { |
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291 if ((ret=DoCom(1))>0) |
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292 { |
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293 if (ret<chNum) |
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294 return(FileFormat); |
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295 chNum=ret; |
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296 } |
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297 } |
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298 else |
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299 { |
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300 int len=0; |
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301 char* ptr=ScanLine(len); |
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302 if (len) |
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303 { |
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304 isCharBody=1; |
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305 if (n_row==0) |
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306 { |
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307 iChar=iFxf->chr[chNum]; |
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308 chNum++; |
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309 } |
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310 unsigned short int* pDest=(unsigned short int*)(iFontCompiler->FontStore()+offset+iChar->ByteWid*n_row); |
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311 bit=1; |
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312 *pDest=0; |
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313 for (int width=0;width<len && (ptr[width]=='0' || ptr[width]=='1');width++) |
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314 { |
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315 if (ptr[width]=='1') |
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316 *pDest|=bit; |
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317 if (bit==0x8000) |
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318 { |
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319 bit=1; |
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320 pDest++; |
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321 *pDest=0; |
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322 } |
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323 else |
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324 bit<<=1; |
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325 } |
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326 n_row++; |
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327 } |
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328 } |
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329 if ((n_row!=0 && !isCharBody) || (lastLine && isCharBody)) |
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330 { |
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331 iChar->offset=offset; |
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332 offset+=iChar->ByteWid*n_row; |
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333 n_row=0; |
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334 } |
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335 } while(!lastLine); |
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336 return(NoError); |
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337 } |
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