1 /* |
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2 * Copyright (c) 2004 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 CIHLIMAGEVIEWER_H |
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20 #define CIHLIMAGEVIEWER_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 #include <hal.h> |
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26 |
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27 //FORWARD DECLARATIONS |
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28 class MIHLFileImage; |
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29 class MIHLBitmap; |
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30 class MIHLViewerObserver; |
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31 class CIHLBitmap; |
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32 class CIHLBitmapProcessor; |
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33 |
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34 #define KMinimumInterval 10000 |
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35 |
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36 // CLASS DECLARATION |
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37 /** |
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38 * CIHLImageViewer |
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39 * |
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40 * Image Viewer implementation class. |
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41 * @lib IHL.lib |
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42 * @since 3.0 |
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43 */ |
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44 NONSHARABLE_CLASS( CIHLImageViewer ) : public CTimer, public MIHLImageViewer |
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45 { |
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46 public: // Constructors and destructor |
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47 |
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48 /** |
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49 * Two-phased constructor. |
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50 */ |
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51 static CIHLImageViewer* NewL( const TSize& aViewerSize, |
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52 MIHLFileImage& aSource, |
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53 MIHLBitmap& aDestination, |
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54 MIHLViewerObserver& aObserver, |
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55 const TUint32 aOptions ); |
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56 |
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57 /* |
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58 * Virtual destructor. |
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59 */ |
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60 virtual ~CIHLImageViewer(); |
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61 |
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62 public: // From base class MIHLViewer |
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63 |
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64 /* |
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65 * From MIHLViewer, see base class header. |
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66 */ |
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67 TIHLInterfaceType Type() const; |
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68 |
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69 public: // From base class MIHLImageViewer |
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70 |
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71 /* |
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72 * From MIHLImageViewer, see base class header. |
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73 */ |
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74 TBool IsAnimation() const; |
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75 |
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76 /* |
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77 * From MIHLImageViewer, see base class header. |
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78 */ |
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79 void Play(); |
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80 |
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81 /* |
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82 * From MIHLImageViewer, see base class header. |
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83 */ |
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84 void Stop(); |
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85 |
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86 /* |
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87 * From MIHLImageViewer, see base class header. |
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88 */ |
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89 TBool IsPlaying() const; |
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90 |
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91 /* |
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92 * From MIHLImageViewer, see base class header. |
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93 */ |
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94 TInt AnimationFrameCount() const; |
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95 |
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96 /* |
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97 * From MIHLImageViewer, see base class header. |
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98 */ |
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99 TInt AnimationFrame() const; |
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100 |
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101 /* |
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102 * From MIHLImageViewer, see base class header. |
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103 */ |
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104 TInt SetAnimationFrame( TInt aFrameIndex ); |
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105 |
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106 /* |
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107 * From MIHLImageViewer, see base class header. |
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108 */ |
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109 TInt SetViewerSize( const TSize& aViewerSize, TInt srcBitmapScaleFactor = 1 ); |
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110 |
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111 /* |
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112 * From MIHLImageViewer, see base class header. |
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113 */ |
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114 TSize ViewerSize() const; |
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115 |
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116 /* |
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117 * From MIHLImageViewer, see base class header. |
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118 */ |
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119 TInt MoveSourceRect( TInt aDx, TInt aDy ); |
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120 |
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121 /* |
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122 * From MIHLImageViewer, see base class header. |
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123 */ |
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124 TInt SetSourceRectPosition( const TPoint& aPosition ); |
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125 |
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126 /* |
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127 * From MIHLImageViewer, see base class header. |
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128 */ |
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129 TRect SourceRect() const; |
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130 |
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131 /* |
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132 * From MIHLImageViewer, see base class header. |
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133 */ |
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134 TSize SourceSize() const; |
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135 |
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136 /* |
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137 * From MIHLImageViewer, see base class header. |
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138 */ |
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139 TInt SetZoomRatio( TReal aZoomRatio ); |
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140 |
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141 /* |
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142 * From MIHLImageViewer, see base class header. |
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143 */ |
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144 TReal ZoomRatio() const; |
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145 |
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146 /* |
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147 * From MIHLImageViewer, see base class header. |
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148 */ |
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149 TReal ZoomToFitRatio() const; |
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150 |
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151 /* |
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152 * From MIHLImageViewer, see base class header. |
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153 */ |
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154 TInt RotateClockwise(); |
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155 |
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156 /* |
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157 * From MIHLImageViewer, see base class header. |
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158 */ |
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159 TInt RotateCounterClockwise(); |
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160 |
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161 /* |
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162 * From MIHLImageViewer, see base class header. |
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163 */ |
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164 TInt SetRotationAngle( TInt aRotationAngle ); |
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165 |
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166 /* |
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167 * From MIHLImageViewer, see base class header. |
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168 */ |
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169 TInt RotationAngle() const; |
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170 |
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171 /* |
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172 * From MIHLImageViewer, see base class header. |
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173 */ |
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174 TInt SetVerticalMirroring( TBool aValue ); |
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175 |
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176 /* |
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177 * From MIHLImageViewer, see base class header. |
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178 */ |
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179 TBool VerticalMirroring() const; |
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180 |
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181 /* |
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182 * From MIHLImageViewer, see base class header. |
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183 */ |
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184 TInt SetHorizontalMirroring( TBool aValue ); |
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185 |
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186 /* |
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187 * From MIHLImageViewer, see base class header. |
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188 */ |
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189 TBool HorizontalMirroring() const; |
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190 |
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191 /* |
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192 * From MIHLImageViewer, see base class header. |
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193 */ |
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194 void SetFilter( MIHLFilter* aFilter ); |
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195 |
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196 public: // From base class CTimer |
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197 |
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198 /* |
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199 * From CTimer, see base class header. |
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200 */ |
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201 void DoCancel(); |
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202 |
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203 /* |
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204 * From CTimer, see base class header. |
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205 */ |
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206 void RunL(); |
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207 |
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208 /* |
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209 * From CTimer, see base class header. |
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210 */ |
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211 TInt RunError( TInt aError ); |
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212 |
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213 private: // Private methods |
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214 |
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215 /* |
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216 * Start asynchronous processing with new settings. |
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217 * This is needed always when settings are changed. |
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218 */ |
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219 TInt ApplySettings(); |
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220 |
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221 /* |
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222 * Start load process source bitmap. |
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223 */ |
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224 TInt AsyncLoad(); |
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225 |
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226 /* |
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227 * Check if process is needed. |
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228 */ |
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229 TBool NeedAsyncProcess(); |
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230 |
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231 /* |
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232 * Start processing with new settings. |
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233 */ |
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234 TInt AsyncProcess(); |
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235 |
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236 /* |
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237 * No external processing. |
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238 * Just duplicates source to destination. |
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239 */ |
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240 TInt SyncProcess(); |
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241 |
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242 /* |
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243 * Finish processing and notify client. |
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244 */ |
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245 TInt Finish(); |
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246 |
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247 /* |
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248 * Update frame index when playing animation. |
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249 */ |
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250 void UpdateAnimationIndex(); |
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251 |
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252 /* |
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253 * Complete dummy request. This causes RunL() method to be called. |
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254 * Needed by state machine. |
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255 */ |
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256 void SelfComplete(); |
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257 |
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258 /* |
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259 * Calculate minimum source bitmap size (using fixed loadsizes) |
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260 * needed by processing and destination bitmap. |
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261 */ |
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262 TSize MinimumSourceLoadSize(); |
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263 |
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264 /* |
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265 * Calculate source bitmap rectangle needed by processor. |
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266 * Rectangle is affected by rotating and mirroring settings etc. |
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267 */ |
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268 TRect CalculateProcessSourceRect( const TSize& aLoadSize ); |
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269 |
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270 /* |
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271 * Calculate destination bitmap rectangle needed by processor. |
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272 * Rectangle is affected by rotating and mirroring settings etc. |
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273 */ |
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274 TRect CalculateProcessDestinationRect(); |
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275 |
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276 /* |
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277 * Calculate needed zoomratio for "fit-to-screen" zooming. |
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278 */ |
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279 void CalculateZoomToFitRatio(); |
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280 |
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281 /* |
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282 * Calculate source bitmap rectangle and destination bitmap size. |
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283 * These values needs to be recalculated when rectangle setting is changed. |
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284 */ |
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285 void CalculateSourceRectAndDestinationSize( ); |
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286 |
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287 /* |
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288 * Shedules next frame of animation in using aDelay CTimer::Hires(). |
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289 * If this is not the first frame the shedule time is decreased by |
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290 * previous frame draw time. |
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291 */ |
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292 void SheduleNextFrame(TTimeIntervalMicroSeconds32 aDelay); |
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293 |
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294 /* |
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295 * Assert if source bitmap rectangle and destination bitmpa size are valid. |
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296 * This method is called by CalculateSourceRectAndDestinationSize() |
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297 */ |
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298 #ifdef _DEBUG |
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299 void AssertSourceRectAndDestinationSize(); |
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300 #endif |
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301 |
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302 private: // Private constructors |
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303 |
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304 void ConstructL(); |
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305 CIHLImageViewer( const TSize& aViewerSize, |
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306 MIHLFileImage& aSource, |
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307 MIHLBitmap& aDestination, |
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308 MIHLViewerObserver& aObserver, |
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309 const TUint32 aOptions ); |
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310 |
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311 private: // Private data types |
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312 |
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313 enum TViewerState |
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314 { |
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315 EInactive, |
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316 ELoad, |
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317 EProcess, |
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318 EAnimation, |
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319 }; |
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320 |
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321 private: // Data |
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322 |
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323 // Viewer state |
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324 TViewerState iViewerState; |
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325 |
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326 // Ref: Observers |
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327 MIHLViewerObserver& iObserver; |
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328 |
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329 // Ref: Viewer source image |
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330 MIHLFileImage& iSource; |
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331 TSize iSourceSize; |
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332 TRect iSourceRect; |
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333 |
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334 // Ref: Viewer destination bitmap |
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335 MIHLBitmap& iDestination; |
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336 TSize iDestinationSize; |
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337 |
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338 // Viewing settings |
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339 const TUint32 iOptions; |
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340 TSize iViewerSize; |
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341 TReal iZoomRatio; |
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342 TReal iZoomToFitRatio; |
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343 TInt iRotationAngle; |
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344 TBool iVerticalMirroring; |
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345 TBool iHorizontalMirroring; |
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346 |
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347 // Own: Bitmap caches |
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348 CIHLBitmap* iCacheSource; |
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349 CIHLBitmap* iCacheDestination; |
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350 |
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351 // Own: Bitmap processor |
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352 CIHLBitmapProcessor* iProcessor; |
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353 |
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354 // Animation info |
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355 TBool iIsPlaying; |
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356 TInt iAnimationIndex; |
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357 |
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358 // src bitmap scale factor |
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359 TInt iSrcBitmapScaleFactor; |
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360 |
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361 // Animation time tweaking |
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362 TInt64 iAnimInitFastTime; //clock ticks |
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363 TInt64 iAnimDrawStartFastTime; //clock tics |
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364 TInt iAnimLastFrameDrawTime; //micro seconds |
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365 TInt iTickPeriod; //clock tick period |
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366 TTimeIntervalMicroSeconds32 iAnimDelay; |
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367 |
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368 |
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369 |
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370 }; |
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371 |
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372 #endif // CIHLIMAGEVIEWER_H |
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373 |
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374 // End of File |
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