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1 /* |
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2 * Copyright (c) 2004,2005 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: SVGT Thumbnail Utility Class implements the thumbnail |
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15 * used to display SVGT content. |
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16 * |
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17 */ |
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18 |
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19 |
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20 |
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21 #ifndef __SVGTTHUMBNAILUTIL_H__ |
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22 #define __SVGTTHUMBNAILUTIL_H__ |
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23 |
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24 // INCLUDES |
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25 |
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26 #include <SVGRequestObserver.h> |
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27 |
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28 |
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29 // FUNCTION PROTOTYPES |
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30 |
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31 // FORWARD DECLARATIONS |
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32 class CSvgEngineInterfaceImpl; |
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33 class CFbsBitmap; |
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34 // CLASS DECLARATION |
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35 |
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36 /** |
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37 * CSVGTThumbnailUtil is a utility class used to generate thumbnails. |
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38 * It is used through dialog provided by CSVGTUIDialog. |
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39 * |
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40 * @lib SVGTUIControl.lib |
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41 * @since 3.0 |
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42 */ |
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43 |
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44 class CSVGTThumbnailUtil : public CBase, |
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45 public MSvgRequestObserver |
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46 { |
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47 public: // Constructors and destructor |
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48 /** |
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49 * Generate thumbnails for SVGT content. |
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50 * @since 3.0 |
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51 * @param aFileHandle File Handle to the SVGT file. |
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52 * @param aThumbnailBitmap Bitmap - Client provided bitmap to render |
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53 * the SVGT contents opening screen. |
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54 * @param aThumbnailBitmap Bitmap - Client provided bitmap mask. |
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55 * @return Boolean ETrue indicates thumbnail generated successfully, |
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56 * EFalse otherwise. |
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57 */ |
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58 IMPORT_C static TBool GenerateThumbnailLD( RFile& aFileHandle, |
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59 CFbsBitmap& aThumbnailBitmap, |
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60 CFbsBitmap& aThumbnailBitmapMask ); |
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61 |
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62 public: // New functions |
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63 |
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64 public: // Functions from base classes |
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65 |
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66 |
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67 /** |
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68 * This function is called to initialize the SVGT-Engine interface. |
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69 * @since 3.0 |
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70 */ |
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71 void InitializeEngineL(); |
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72 |
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73 /** |
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74 * Generates Thumbnail of initial screen of SVG content. |
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75 * @since 3.0 |
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76 * @return Boolean ETrue indicates thumbnail generated successfully, |
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77 * EFalse otherwise. |
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78 */ |
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79 |
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80 TBool GenerateThumbnail(); |
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81 |
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82 |
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83 protected: // Functions from base classes |
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84 |
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85 /** |
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86 * From MSvgRequestObserver Method called by SVG Engine |
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87 * after it has rendered a frame. |
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88 * @since 3.0 |
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89 */ |
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90 void UpdateScreen(); |
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91 |
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92 /** |
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93 * From MSvgRequestObserver This method is for future extension, |
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94 * in which an external script engine could be used to evaluate |
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95 * a script description. |
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96 * @since 3.0 |
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97 * @param aScript Descriptor containing script |
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98 * @param aCallerElement SVG Element that calls the script by a |
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99 * an event of the "on" attribute. |
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100 * @return TBool. |
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101 */ |
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102 TBool ScriptCall( const TDesC& aScript, |
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103 CSvgElementImpl* aCallerElement ); |
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104 |
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105 /** |
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106 * From MSvgRequestObserver This method is called by the SVG engine |
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107 * to retrieve the absolute path of the image file. |
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108 * @since 3.0 |
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109 * @param aUri Descriptor containing the relative path of the image. |
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110 * @param aFilePath Descriptor which contains absolute path that is |
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111 * to be used by the Engine to retrieve the image. |
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112 * @return TBool - |
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113 * ETrue indicates absolute path is present in aFilePath. |
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114 * EFalse otherwise. |
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115 */ |
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116 TInt FetchImage( const TDesC& aUri, |
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117 RFs& aSession, RFile& aFileHandle ) ; |
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118 |
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119 TInt FetchFont( const TDesC& /* aUri */, |
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120 RFs& /* aSession */, RFile& /* aFileHandle */ ); |
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121 |
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122 /** |
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123 * From MSvgRequestObserver This method is called by the SVG engine |
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124 * to get the SMIL Fit attribute value. |
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125 * @since 3.0 |
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126 * @param aSmilValue Descriptor containing the SMIL Fit attribute. |
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127 */ |
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128 void GetSmilFitValue( TDes& aSmilValue ); |
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129 |
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130 /** |
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131 * From MSvgRequestObserver This method is called by the SVG engine |
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132 * to update the presentation status. |
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133 * @since 3.0 |
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134 * @param aNoOfAnimation Integer. When called for the first time |
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135 * it indicates total number of animations. |
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136 * Subsequently it contains number of animations that were completed. |
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137 */ |
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138 void UpdatePresentation( const TInt32& aNoOfAnimation ); |
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139 private: |
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140 |
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141 /** |
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142 * C++ default constructor. |
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143 */ |
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144 CSVGTThumbnailUtil( RFile& aFileHandle ); |
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145 |
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146 /** |
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147 * Second Phase constructor. |
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148 * @param aThumbnailBitmap Client provided bitmap to render the SVGT |
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149 * contents opening screen. |
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150 * @param aThumbnailBitmapMask Bitmap - Client provided bitmap for SVGT |
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151 * bitmap mask. |
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152 */ |
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153 void ConstructL( CFbsBitmap& aThumbnailBitmap, |
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154 CFbsBitmap& aThumbnailBitmapMask ); |
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155 |
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156 /** |
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157 * Two-phased constructor for thumbnail creation. |
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158 * @since 3.0 |
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159 * @param aFileHandle file handle to the SVGT file. |
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160 * @param aThumbnailBitmap Bitmap - Client provided bitmap to render |
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161 * the SVGT contents opening screen. |
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162 * @param aThumbnailBitmapMask Bitmap - Client provided bitmap for SVGT |
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163 * bitmap mask. |
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164 * @return CSVGTThumbnailUtil* |
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165 */ |
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166 |
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167 static CSVGTThumbnailUtil* NewL( RFile& aFileHandle, |
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168 CFbsBitmap& aThumbnailBitmap, |
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169 CFbsBitmap& aThumbnailBitmapMask ); |
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170 |
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171 /** |
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172 * Two-phased constructor for thumbnail creation that pushes the |
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173 * object on the cleanup stack. |
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174 * @since 3.0 |
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175 * @param aFileHandle file handle to the SVGT file. |
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176 * @param aThumbnailBitmap Client provided bitmap to render the SVGT |
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177 * contents opening screen. |
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178 * @param aThumbnailBitmapMask Bitmap - Client provided bitmap for SVGT |
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179 * bitmap mask. |
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180 * @return CSVGTThumbnailUtil* |
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181 */ |
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182 |
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183 static CSVGTThumbnailUtil* NewLC( RFile& aFileHandle, |
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184 CFbsBitmap& aThumbnailBitmap, |
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185 CFbsBitmap& aThumbnailBitmapMask ); |
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186 /** |
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187 * Destructor. |
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188 */ |
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189 |
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190 virtual ~CSVGTThumbnailUtil(); |
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191 |
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192 private: // Data |
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193 // Dummy Bitmap used by SVG Engine to render content. |
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194 CFbsBitmap* iSVGTBitMapDummy; |
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195 |
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196 // SVG Engine Interface Implementation pointer |
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197 CSvgEngineInterfaceImpl* iSvgModule; |
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198 |
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199 // Thumbnail bitmap used by SVG Engine to render content. |
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200 CFbsBitmap* iThumbnailBitmap; |
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201 |
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202 // Thumbnail bitmap mask used by SVG Engine to render content mask. |
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203 CFbsBitmap* iThumbnailBitmapMask; |
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204 |
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205 // SVG Thumbnail Handle |
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206 TInt iThumbnailHandle; |
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207 |
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208 // SVGT content filename descriptor |
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209 RFile& iContentFileHandle; |
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210 }; |
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211 |
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212 #endif // __SVGTTHUMBNAILUTIL_H__ |
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213 |
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214 // End of File |