1 /* |
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2 * Copyright (c) 2006 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: Implementation of Image Viewer class. |
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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 #ifndef CIHLIMAGEVIEWEREXTJPG_H |
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20 #define CIHLIMAGEVIEWEREXTJPG_H |
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21 |
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22 // INCLUDES |
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23 #include "MIHLImageViewer.h" |
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24 #include <e32base.h> |
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25 |
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26 //FORWARD DECLARATIONS |
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27 class MIHLFileImageExtJpg; |
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28 class MIHLBitmap; |
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29 class MIHLViewerObserver; |
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30 class CIHLBitmap; |
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31 class CIHLBitmapProcessor; |
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32 |
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33 // CLASS DECLARATION |
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34 /** |
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35 * CIHLImageViewer |
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36 * |
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37 * Image Viewer implementation class. |
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38 * @lib IHL.lib |
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39 * @since 3.0 |
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40 */ |
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41 NONSHARABLE_CLASS( CIHLImageViewerExtJpg ) : public CTimer, public MIHLImageViewer |
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42 { |
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43 public: // Constructors and destructor |
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44 |
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45 /** |
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46 * Two-phased constructor. |
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47 */ |
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48 static CIHLImageViewerExtJpg* NewL( const TSize& aViewerSize, |
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49 MIHLFileImageExtJpg& aSource, |
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50 MIHLBitmap& aDestination, |
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51 MIHLViewerObserver& aObserver, |
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52 const TUint32 aOptions ); |
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53 |
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54 /* |
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55 * Virtual destructor. |
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56 */ |
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57 virtual ~CIHLImageViewerExtJpg(); |
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58 |
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59 public: // From base class MIHLViewer |
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60 |
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61 /* |
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62 * From MIHLViewer, see base class header. |
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63 */ |
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64 TIHLInterfaceType Type() const; |
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65 |
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66 public: |
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67 |
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68 /* |
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69 * From MIHLImageViewer, see base class header. |
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70 */ |
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71 TBool IsAnimation() const; |
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72 |
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73 /* |
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74 * From MIHLImageViewer, see base class header. |
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75 */ |
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76 void Play(); |
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77 |
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78 /* |
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79 * From MIHLImageViewer, see base class header. |
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80 */ |
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81 void Stop(); |
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82 |
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83 /* |
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84 * From MIHLImageViewer, see base class header. |
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85 */ |
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86 TBool IsPlaying() const; |
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87 |
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88 /* |
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89 * From MIHLImageViewer, see base class header. |
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90 */ |
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91 TInt AnimationFrameCount() const; |
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92 |
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93 /* |
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94 * From MIHLImageViewer, see base class header. |
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95 */ |
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96 TInt AnimationFrame() const; |
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97 |
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98 /* |
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99 * From MIHLImageViewer, see base class header. |
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100 */ |
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101 TInt SetAnimationFrame( TInt aFrameIndex ); |
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102 |
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103 /* |
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104 * From MIHLImageViewer, see base class header. |
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105 */ |
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106 TInt SetViewerSize( const TSize& aViewerSize, TInt srcBitmapScaleFactor = 1 ); |
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107 |
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108 /* |
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109 * From MIHLImageViewer, see base class header. |
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110 */ |
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111 TSize ViewerSize() const; |
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112 |
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113 /* |
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114 * From MIHLImageViewer, see base class header. |
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115 */ |
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116 TInt MoveSourceRect( TInt aDx, TInt aDy ); |
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117 |
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118 /* |
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119 * From MIHLImageViewer, see base class header. |
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120 */ |
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121 TInt SetSourceRectPosition( const TPoint& aPosition ); |
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122 |
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123 /* |
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124 * From MIHLImageViewer, see base class header. |
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125 */ |
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126 TRect SourceRect() const; |
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127 |
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128 /* |
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129 * From MIHLImageViewer, see base class header. |
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130 */ |
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131 TSize SourceSize() const; |
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132 |
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133 /* |
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134 * From MIHLImageViewer, see base class header. |
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135 */ |
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136 TInt SetZoomRatio( TReal aZoomRatio ); |
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137 |
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138 /* |
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139 * From MIHLImageViewer, see base class header. |
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140 */ |
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141 TReal ZoomRatio() const; |
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142 |
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143 /* |
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144 * From MIHLImageViewer, see base class header. |
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145 */ |
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146 TReal ZoomToFitRatio() const; |
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147 |
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148 /* |
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149 * From MIHLImageViewer, see base class header. |
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150 */ |
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151 TInt RotateClockwise(); |
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152 |
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153 /* |
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154 * From MIHLImageViewer, see base class header. |
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155 */ |
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156 TInt RotateCounterClockwise(); |
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157 |
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158 /* |
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159 * From MIHLImageViewer, see base class header. |
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160 */ |
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161 TInt SetRotationAngle( TInt aRotationAngle ); |
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162 |
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163 /* |
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164 * From MIHLImageViewer, see base class header. |
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165 */ |
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166 TInt RotationAngle() const; |
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167 |
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168 /* |
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169 * From MIHLImageViewer, see base class header. |
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170 */ |
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171 TInt SetVerticalMirroring( TBool aValue ); |
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172 |
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173 /* |
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174 * From MIHLImageViewer, see base class header. |
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175 */ |
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176 TBool VerticalMirroring() const; |
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177 |
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178 /* |
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179 * From MIHLImageViewer, see base class header. |
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180 */ |
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181 TInt SetHorizontalMirroring( TBool aValue ); |
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182 |
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183 /* |
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184 * From MIHLImageViewer, see base class header. |
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185 */ |
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186 TBool HorizontalMirroring() const; |
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187 |
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188 /* |
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189 * From MIHLImageViewer, see base class header. |
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190 */ |
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191 void SetFilter( MIHLFilter* aFilter ); |
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192 |
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193 public: |
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194 |
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195 |
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196 |
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197 public: // From base class CTimer |
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198 |
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199 /* |
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200 * From CTimer, see base class header. |
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201 */ |
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202 void DoCancel(); |
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203 |
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204 /* |
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205 * From CTimer, see base class header. |
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206 */ |
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207 void RunL(); |
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208 |
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209 /* |
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210 * From CTimer, see base class header. |
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211 */ |
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212 TInt RunError( TInt aError ); |
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213 |
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214 |
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215 private: // Private methods |
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216 |
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217 /* |
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218 * Start asynchronous processing with new settings. |
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219 * This is needed always when settings are changed. |
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220 */ |
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221 TInt ApplySettings(); |
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222 |
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223 /* |
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224 * Start load process source bitmap. |
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225 */ |
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226 TInt AsyncLoad(); |
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227 |
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228 /* |
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229 * Finish processing and notify client. |
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230 */ |
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231 TInt Finish(); |
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232 |
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233 /* |
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234 * Complete dummy request. This causes RunL() method to be called. |
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235 * Needed by state machine. |
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236 */ |
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237 void SelfComplete(); |
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238 |
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239 /* |
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240 * Calculate source bitmap rectangle needed by processor. |
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241 * Rectangle is affected by rotating and mirroring settings etc. |
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242 */ |
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243 TRect CalculateProcessSourceRect( const TSize& aSourceCacheSize ); |
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244 |
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245 /* |
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246 * Calculate destination bitmap rectangle needed by processor. |
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247 * Rectangle is affected by rotating and mirroring settings etc. |
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248 */ |
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249 TRect CalculateProcessDestinationRect(); |
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250 |
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251 /* |
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252 * Calculate needed zoomratio for "fit-to-screen" zooming. |
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253 */ |
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254 void CalculateZoomToFitRatio(); |
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255 |
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256 /* |
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257 * Calculate source bitmap rectangle and destination bitmap size. |
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258 * These values needs to be recalculated when rectangle setting is changed. |
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259 */ |
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260 void CalculateSourceRectAndDestinationSize(); |
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261 |
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262 /* |
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263 * Assert if source bitmap rectangle and destination bitmpa size are valid. |
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264 * This method is called by CalculateSourceRectAndDestinationSize() |
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265 */ |
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266 #ifdef _DEBUG |
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267 void AssertSourceRectAndDestinationSize(); |
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268 #endif |
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269 |
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270 private: // Private constructors |
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271 |
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272 void ConstructL(); |
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273 CIHLImageViewerExtJpg( const TSize& aViewerSize, |
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274 MIHLFileImageExtJpg& aSource, |
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275 MIHLBitmap& aDestination, |
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276 MIHLViewerObserver& aObserver, |
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277 const TUint32 aOptions ); |
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278 |
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279 private: // Private data types |
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280 |
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281 enum TViewerState |
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282 { |
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283 EInactive, |
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284 ELoad, |
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285 EProcess |
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286 }; |
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287 |
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288 private: // Data |
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289 |
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290 // Viewer state |
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291 TViewerState iViewerState; |
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292 |
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293 // Ref: Observers |
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294 MIHLViewerObserver& iObserver; |
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295 |
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296 // Ref: Viewer source image |
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297 MIHLFileImageExtJpg& iSource; |
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298 TSize iSourceSize; |
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299 TRect iSourceRect; |
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300 |
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301 // Ref: Viewer destination bitmap |
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302 MIHLBitmap& iDestination; |
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303 TSize iDestinationSize; |
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304 |
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305 // Viewing settings |
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306 const TUint32 iOptions; |
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307 TSize iViewerSize; |
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308 TReal iZoomRatio; |
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309 TReal iZoomToFitRatio; |
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310 TInt iRotationAngle; |
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311 TBool iVerticalMirroring; |
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312 TBool iHorizontalMirroring; |
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313 |
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314 // Decoder capabilities |
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315 TInt iCapabilities; |
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316 |
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317 // Internal processor flag |
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318 TBool iInternalProcessingNeeded; |
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319 |
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320 // Own: Bitmap caches |
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321 CIHLBitmap* iCacheSource; |
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322 CIHLBitmap* iCacheDestination; |
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323 // Own: Bitmap processor |
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324 CIHLBitmapProcessor* iProcessor; |
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325 // src bitmap scale factor |
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326 TInt iSrcBitmapScaleFactor; |
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327 |
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328 }; |
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329 |
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330 #endif // CIHLIMAGEVIEWEREXTJPG_H |
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331 |
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332 // End of File |
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