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1 /* |
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2 * Copyright (c) 2007-2008 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: Layout that performs crossfade |
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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 |
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20 |
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21 // Include Files |
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22 #include "shwcrossfadelayout.h" |
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23 |
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24 #include <glxlog.h> |
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25 #include <glxtracer.h> |
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26 |
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27 #include "shwconstants.h" |
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28 |
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29 using namespace NShwSlideshow; |
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30 |
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31 // ----------------------------------------------------------------------------- |
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32 // Constructor |
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33 // ----------------------------------------------------------------------------- |
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34 TShwCrossFadeLayout::TShwCrossFadeLayout() |
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35 { |
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36 TRACER("TShwCrossFadeLayout::TShwCrossFadeLayout"); |
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37 GLX_LOG_INFO("TShwCrossFadeLayout::TShwCrossFadeLayout"); |
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38 __DEBUG_ONLY( _iName = _L("TShwCrossfadeLayout") ); |
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39 // default values |
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40 // style is linear |
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41 iOpacity.SetStyle( EAlfTimedValueStyleLinear ); |
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42 } |
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43 |
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44 // ----------------------------------------------------------------------------- |
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45 // Destructor |
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46 // ----------------------------------------------------------------------------- |
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47 TShwCrossFadeLayout::~TShwCrossFadeLayout() |
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48 { |
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49 TRACER("TShwCrossFadeLayout::~TShwCrossFadeLayout"); |
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50 GLX_LOG_INFO("TShwCrossFadeLayout::~TShwCrossFadeLayout"); |
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51 // Do nothing |
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52 } |
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53 |
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54 // ----------------------------------------------------------------------------- |
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55 // Set |
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56 // ----------------------------------------------------------------------------- |
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57 void TShwCrossFadeLayout::Set( TReal32 aOpacity, TInt aDuration ) |
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58 { |
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59 TRACER("TShwCrossFadeLayout::Set"); |
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60 GLX_LOG_INFO("TShwCrossFadeLayout::Set"); |
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61 iOpacity.Set( aOpacity, aDuration ); |
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62 } |
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63 |
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64 // ----------------------------------------------------------------------------- |
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65 // Pause |
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66 // ----------------------------------------------------------------------------- |
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67 void TShwCrossFadeLayout::Pause() |
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68 { |
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69 TRACER("TShwCrossFadeLayout::Pause"); |
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70 GLX_LOG_INFO("TShwCrossFadeLayout::Pause"); |
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71 iOpacity.Pause(); |
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72 } |
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73 |
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74 // ----------------------------------------------------------------------------- |
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75 // Resume |
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76 // ----------------------------------------------------------------------------- |
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77 void TShwCrossFadeLayout::Resume() |
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78 { |
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79 TRACER("TShwCrossFadeLayout::Resume"); |
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80 GLX_LOG_INFO("TShwCrossFadeLayout::Resume"); |
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81 iOpacity.Resume(); |
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82 } |
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83 |
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84 // ----------------------------------------------------------------------------- |
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85 // DoSetLayoutValues |
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86 // ----------------------------------------------------------------------------- |
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87 void TShwCrossFadeLayout::DoSetLayoutValues( TGlxLayoutInfo& aInfo ) |
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88 { |
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89 TRACER("TShwCrossFadeLayout::DoSetLayoutValues"); |
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90 GLX_LOG_INFO("TShwCrossFadeLayout::DoSetLayoutValues"); |
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91 // get new opacity |
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92 TReal32 opacity = iOpacity.Now(); |
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93 |
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94 // ensure value is inside maximum and minimum opacity |
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95 opacity = Min( opacity, KMaxOpacity ); |
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96 opacity = Max( opacity, KMinOpacity ); |
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97 |
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98 // set value to the info |
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99 //aInfo.iOpacity = opacity; |
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100 } |
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101 |
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102 // ----------------------------------------------------------------------------- |
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103 // DoChanged |
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104 // ----------------------------------------------------------------------------- |
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105 TBool TShwCrossFadeLayout::DoChanged() const |
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106 { |
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107 TRACER("TShwCrossFadeLayout::DoChanged"); |
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108 GLX_LOG_INFO("TShwCrossFadeLayout::DoChanged"); |
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109 return iOpacity.Changed(); |
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110 } |
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111 |
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112 // ----------------------------------------------------------------------------- |
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113 // DoClearChanged |
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114 // ----------------------------------------------------------------------------- |
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115 void TShwCrossFadeLayout::DoClearChanged() |
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116 { |
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117 TRACER("TShwCrossFadeLayout::DoClearChanged"); |
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118 GLX_LOG_INFO("TShwCrossFadeLayout::DoClearChanged"); |
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119 iOpacity.ClearChanged(); |
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120 } |