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1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include "wsgraphicdrawercontext.h" |
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17 #include "stdgraphictestdrawer.h" |
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18 |
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19 CWsGraphicDrawerTestFrameRate* CWsGraphicDrawerTestFrameRate::CreateL() |
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20 { |
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21 return new(ELeave) CWsGraphicDrawerTestFrameRate; |
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22 } |
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23 |
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24 CWsGraphicDrawerTestFrameRate::CWsGraphicDrawerTestFrameRate() |
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25 { |
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26 } |
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27 |
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28 CWsGraphicDrawerTestFrameRate::~CWsGraphicDrawerTestFrameRate() |
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29 { |
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30 if (iContext) |
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31 { |
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32 iContext->Destroy(); |
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33 iContext = NULL; |
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34 } |
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35 } |
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36 |
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37 void CWsGraphicDrawerTestFrameRate::ConstructL(MWsGraphicDrawerEnvironment& aEnv,const TGraphicDrawerId& aId,MWsClient& aOwner,const TDesC8& /*aData*/) |
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38 { |
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39 BaseConstructL(aEnv,aId,aOwner); |
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40 if (!(aEnv.Screen(0)->ResolveObjectInterface(KMWsCompositionContext) || aEnv.Screen(0)->ResolveObjectInterface(KMWsScene))) |
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41 { |
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42 iContext = CWsGraphicDrawerNonNgaContext::NewL(); |
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43 } |
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44 else |
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45 { |
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46 iContext = CWsGraphicDrawerNgaContext::NewL(); |
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47 } |
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48 } |
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49 |
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50 void CWsGraphicDrawerTestFrameRate::DoDraw(MWsGc& aGc,const TRect& aRect,const TDesC8& /*aData*/) const |
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51 { |
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52 if (KErrNone != iContext->Push(aGc)) |
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53 { |
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54 return; |
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55 } |
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56 //Simplification: treats all screens the same |
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57 iContext->DrawFrameRate(aGc, aRect, iFps); |
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58 //Count this draw |
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59 iFps.Sample(); |
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60 //Schedule a redraw |
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61 iContext->ScheduleAnimation(aGc,aRect,0); // as fast as possible |
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62 iContext->Pop(aGc); |
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63 } |
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64 |
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65 void CWsGraphicDrawerTestFrameRate::HandleMessage(const TDesC8& /*aData*/) |
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66 { |
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67 } |
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68 |
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69 TInt CFrameRate::Fps() const |
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70 { |
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71 if(iNumSamples > 1) |
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72 { |
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73 const TUint count = Min(iNumSamples,KMaxSamples); |
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74 TInt64 earliest = iSamples[0]; |
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75 TInt64 latest = earliest; |
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76 for(TInt i=1; i<count; i++) |
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77 { |
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78 const TInt64 sample = iSamples[i]; |
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79 earliest = Min(earliest,sample); |
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80 latest = Max(latest,sample); |
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81 } |
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82 const TInt64 duration = latest - earliest; |
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83 const TInt microspf = (duration / count); |
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84 if(microspf) |
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85 { |
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86 const TInt millispf = (microspf / 1000); |
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87 if(millispf) |
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88 { |
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89 const TInt fps = (1000 / millispf); |
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90 return fps; |
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91 } |
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92 } |
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93 } |
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94 return 0; |
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95 } |
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96 |
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97 TInt CFrameRate::CountSamples() const |
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98 { |
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99 return iNumSamples; |
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100 } |
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101 |
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102 void CFrameRate::Sample() const |
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103 { |
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104 //Add the current tick to the stats for next time |
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105 TTime now; |
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106 now.UniversalTime(); |
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107 iSamples[iNumSamples % KMaxSamples] = now.Int64(); |
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108 iNumSamples++; |
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109 } |