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1 /* |
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2 * Copyright (c) 2003 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: SVG Implementation header file |
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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 "SVGAttributeVerifier.h" |
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20 #include <limits.h> |
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21 #include <hal.h> |
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22 #include <hal_data.h> |
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23 // -------------------------------------------------------------------------- |
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24 // TBool CSvgAttributeVerifier::ParseForDecimalValue( const TDesC& aNum2Str, TReal32& aValue ) |
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25 // --------------------------------------------------------------------------- |
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26 TBool CSvgAttributeVerifier::ParseForDecimalValue( const TDesC& aNum2Str, TReal32& aValue, const TDesC& aAttrValue, TBool isSvgElement ) |
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27 { |
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28 TLex parser( aNum2Str ); |
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29 parser.SkipSpace(); |
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30 TInt result = parser.Val( aValue, '.' ); |
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31 TChar chr; |
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32 TBool numUnits = EFalse ; |
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33 TPtrC16 remChars = parser.Remainder(); |
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34 |
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35 TInt dimInTwips ; |
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36 TInt dimInPixels; |
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37 const TReal32 TwipsInCentimeters = 566.929133858268 ; |
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38 const TReal32 TwipsInInches = 1440 ; |
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39 const TReal32 TwipsInPt = 20 ; |
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40 const TReal32 TwipsInPc = 240 ; |
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41 |
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42 _LIT(Kcm,"cm"); |
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43 _LIT(Kmm,"mm"); |
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44 _LIT(Kin,"in"); |
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45 _LIT(KPx,"px"); |
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46 _LIT(KPt,"pt"); |
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47 _LIT(KPc,"pc"); |
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48 _LIT(KPer,"%"); |
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49 |
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50 _LIT(KWidth, "width"); |
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51 _LIT(KHeight, "height"); |
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52 |
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53 if(isSvgElement) |
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54 { |
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55 if(aAttrValue == KWidth) |
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56 { |
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57 if(remChars == Kcm) |
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58 { |
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59 numUnits = ETrue; |
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60 HAL::Get( HALData::EDisplayXTwips, dimInTwips ); |
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61 HAL::Get( HALData::EDisplayXPixels, dimInPixels ); |
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62 |
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63 aValue *= (dimInPixels*TwipsInCentimeters)/dimInTwips ; |
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64 |
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65 } |
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66 else if(remChars == Kmm) |
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67 { |
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68 numUnits = ETrue; |
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69 HAL::Get( HALData::EDisplayXTwips, dimInTwips ); |
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70 HAL::Get( HALData::EDisplayXPixels, dimInPixels ); |
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71 |
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72 aValue *= (dimInPixels*TwipsInCentimeters/10)/dimInTwips ; |
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73 } |
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74 else if(remChars == Kin) |
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75 { |
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76 numUnits = ETrue; |
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77 |
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78 HAL::Get( HALData::EDisplayXTwips, dimInTwips ); |
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79 HAL::Get( HALData::EDisplayXPixels, dimInPixels ); |
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80 aValue *= (dimInPixels*TwipsInInches)/dimInTwips ; |
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81 } |
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82 else if(remChars == KPt) |
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83 { |
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84 numUnits = ETrue; |
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85 |
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86 HAL::Get( HALData::EDisplayXTwips, dimInTwips ); |
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87 HAL::Get( HALData::EDisplayXPixels, dimInPixels ); |
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88 aValue *= (dimInPixels*TwipsInPt)/dimInTwips ; |
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89 } |
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90 else if(remChars == KPc) |
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91 { |
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92 numUnits = ETrue; |
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93 |
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94 HAL::Get( HALData::EDisplayXTwips, dimInTwips ); |
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95 HAL::Get( HALData::EDisplayXPixels, dimInPixels ); |
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96 aValue *= (dimInPixels*TwipsInPc)/dimInTwips ; |
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97 } |
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98 else if(remChars == KPx || remChars == KPer) |
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99 { |
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100 numUnits = ETrue; |
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101 } |
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102 } |
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103 else if(aAttrValue == KHeight) |
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104 { |
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105 if(remChars == Kcm) |
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106 { |
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107 numUnits = ETrue; |
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108 |
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109 HAL::Get( HALData::EDisplayYTwips, dimInTwips ); |
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110 HAL::Get( HALData::EDisplayYPixels, dimInPixels ); |
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111 |
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112 aValue *= (dimInPixels*TwipsInCentimeters)/dimInTwips ; |
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113 } |
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114 else if(remChars == Kmm) |
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115 { |
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116 numUnits = ETrue; |
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117 |
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118 HAL::Get( HALData::EDisplayYTwips, dimInTwips ); |
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119 HAL::Get( HALData::EDisplayYPixels, dimInPixels ); |
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120 |
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121 aValue *= (dimInPixels*TwipsInCentimeters/10)/dimInTwips ; |
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122 } |
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123 else if(remChars == Kin) |
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124 { |
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125 numUnits = ETrue; |
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126 |
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127 HAL::Get( HALData::EDisplayYTwips, dimInTwips ); |
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128 HAL::Get( HALData::EDisplayYPixels, dimInPixels ); |
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129 aValue *= (dimInPixels*TwipsInInches)/dimInTwips ; |
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130 } |
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131 else if(remChars == KPt) |
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132 { |
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133 numUnits = ETrue; |
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134 |
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135 HAL::Get( HALData::EDisplayYTwips, dimInTwips ); |
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136 HAL::Get( HALData::EDisplayYPixels, dimInPixels ); |
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137 aValue *= (dimInPixels*TwipsInPt)/dimInTwips ; |
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138 } |
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139 else if(remChars == KPc) |
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140 { |
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141 numUnits = ETrue; |
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142 |
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143 HAL::Get( HALData::EDisplayYTwips, dimInTwips ); |
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144 HAL::Get( HALData::EDisplayYPixels, dimInPixels ); |
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145 aValue *= (dimInPixels*TwipsInPc)/dimInTwips ; |
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146 } |
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147 else if(remChars == KPx || remChars == KPer) |
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148 { |
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149 numUnits = ETrue; |
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150 } |
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151 } |
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152 } |
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153 |
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154 |
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155 if(!numUnits) |
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156 while(!(parser.Eos())) |
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157 { |
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158 chr=parser.Get(); |
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159 if(!chr.IsDigit()) |
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160 { |
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161 aValue=0; |
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162 return result==KErrNotFound; |
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163 } |
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164 parser.Inc(); |
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165 } |
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166 |
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167 if (result != KErrNone) |
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168 { |
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169 aValue= 0; |
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170 } |
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171 parser.SkipSpace(); |
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172 return result == KErrNone; |
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173 } |
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174 |
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175 |
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176 |
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177 |
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178 // -------------------------------------------------------------------------- |
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179 // TBool CSvgAttributeVerifier::ValidAttrValue( const TDesC& aValue, |
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180 // --------------------------------------------------------------------------- |
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181 TBool CSvgAttributeVerifier::ValidAttrValue( const TDesC& aValue, |
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182 TReal32& aConvVal, |
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183 TUint8 aDatatype, |
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184 const TDesC& aAttrValue, |
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185 TBool isSvgElement) |
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186 { |
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187 TReal32 lMinValue = (TReal32)(aDatatype==KSVG_LENGTH_TYPE ? 0 : -KMax16BitValue); |
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188 // invalid number string |
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189 if ( !ParseForDecimalValue( aValue, aConvVal, aAttrValue, isSvgElement) ) |
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190 { |
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191 aConvVal=0; |
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192 return EFalse; |
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193 } |
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194 // less than minimum value |
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195 else if ( aConvVal > KMax16BitValue ) |
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196 { |
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197 aConvVal = KMax16BitValue; |
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198 return EFalse; |
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199 } |
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200 // greater than maximum value |
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201 else if ( aConvVal < lMinValue ) |
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202 { |
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203 aConvVal = lMinValue; |
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204 return EFalse; |
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205 } |
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206 // number string is valid and within range |
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207 return ETrue; |
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208 } |
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209 |