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1 // btrace_textonscreen.cpp |
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2 // |
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3 // Copyright (c) 2008 - 2010 Accenture. 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 the "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 // Accenture - Initial contribution |
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11 // |
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12 |
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13 #include <fshell/ltkutils.h> |
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14 #include "btrace_parser.h" |
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15 |
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16 |
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17 EXPORT_C CBtraceTextOnScreen* CBtraceTextOnScreen::NewL(CBtraceReader& aReader) |
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18 { |
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19 CBtraceTextOnScreen* self = new (ELeave) CBtraceTextOnScreen(aReader); |
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20 CleanupStack::PushL(self); |
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21 self->ConstructL(); |
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22 CleanupStack::Pop(self); |
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23 return self; |
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24 } |
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25 |
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26 CBtraceTextOnScreen::CBtraceTextOnScreen(CBtraceReader& aReader) |
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27 : iReader(aReader) |
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28 { |
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29 } |
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30 |
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31 EXPORT_C CBtraceTextOnScreen::~CBtraceTextOnScreen() |
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32 { |
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33 iReader.RemoveObserver(KAmTraceCategory, *this); |
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34 iScreenNotifs.Close(); |
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35 } |
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36 |
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37 void CBtraceTextOnScreen::ConstructL() |
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38 { |
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39 iReader.AddObserverL(KAmTraceCategory, *this); |
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40 |
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41 LtkUtils::W32CrackL(); // In case no-one's called it yet |
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42 } |
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43 |
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44 // |
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45 // CBtraceTextOnScreen::HandleBtraceFrameL |
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46 // process the btrace frame, stripping out the relevant text |
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47 // |
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48 void CBtraceTextOnScreen::HandleBtraceFrameL(const TBtraceFrame& aFrame) |
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49 { |
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50 if (aFrame.iCategory == KAmTraceCategory && aFrame.iSubCategory == EAmTraceSubCategoryScreenText) |
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51 { |
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52 // First 2 words have packed windowgroup id and coordinates of text - TODO |
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53 TUint16 windowGroupId = *((const TUint16*)aFrame.iData.Mid(2).Ptr()); |
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54 TPtrC8 data = aFrame.iData.Mid(8); |
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55 TPtrC text((const TUint16*)data.Ptr(), data.Length() / 2); |
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56 SeenL(aFrame.iTickCount, text, windowGroupId); |
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57 } |
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58 } |
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59 |
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60 // |
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61 // CBtraceTextOnScreen::Seen |
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62 // inform any observers that text has arrived on-screen, passing a reference to the text |
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63 // note the observer may ask for any or a specific pattern of text to be notified on |
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64 // |
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65 void CBtraceTextOnScreen::SeenL(const TBtraceTickCount& aTickCount, const TDesC& aData, TInt aWindowGroupId) |
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66 { |
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67 iReader.Log(_L("Screen text: '%S' (%d)\r\n"), &aData, aWindowGroupId); |
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68 TInt ii = iScreenNotifs.Count(); |
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69 while (--ii >= 0) |
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70 { |
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71 TTextOnScreenNotif& nt = iScreenNotifs[ii]; |
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72 |
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73 if (nt.iWindowGroupId && (nt.iWindowGroupId != aWindowGroupId)) |
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74 { |
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75 continue; |
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76 } |
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77 |
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78 |
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79 switch (nt.iMatchMode) |
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80 { |
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81 case EWildNonSpanning: |
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82 { |
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83 if (aData.MatchF(nt.iTxtPtr) != KErrNotFound) |
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84 { |
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85 MBtraceTextOnScreenObserver* observer = nt.iObserver; |
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86 if (nt.iPersistence == ENotificationOneShot) |
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87 { |
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88 iScreenNotifs.Remove(ii); |
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89 } |
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90 observer->HandleTextSeenL(aTickCount, aData, aWindowGroupId); |
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91 } |
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92 break; |
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93 } |
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94 case ESpanningNonWild: |
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95 { |
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96 const TInt length = aData.Length(); |
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97 for (TInt i = 0; i < length; ++i) |
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98 { |
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99 if (aData[i] == nt.iTxtPtr[nt.iMatchedChars]) |
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100 { |
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101 ++nt.iMatchedChars; |
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102 } |
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103 else |
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104 { |
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105 nt.iMatchedChars = 0; |
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106 } |
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107 |
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108 if (nt.iMatchedChars == nt.iTxtPtr.Length()) |
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109 { |
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110 MBtraceTextOnScreenObserver* observer = nt.iObserver; |
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111 if (nt.iPersistence == ENotificationOneShot) |
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112 { |
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113 iScreenNotifs.Remove(ii); |
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114 } |
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115 observer->HandleTextSeenL(aTickCount, aData, aWindowGroupId); |
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116 break; |
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117 } |
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118 } |
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119 break; |
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120 } |
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121 default: |
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122 ASSERT(EFalse); |
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123 } |
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124 } |
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125 } |
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126 |
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127 // |
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128 // CBtraceTextOnScreen::NotifyTextOnScreenL |
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129 // called by the client to register an interest in any text drawn to screen (via wserv only) |
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130 // |
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131 EXPORT_C void CBtraceTextOnScreen::NotifyTextOnScreenL(const TDesC& aText, MBtraceTextOnScreenObserver& aObserver) |
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132 { |
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133 NotifyTextOnScreenL(aText, aObserver, ENotificationOneShot); |
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134 } |
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135 |
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136 EXPORT_C void CBtraceTextOnScreen::NotifyTextOnScreenL(const TDesC& aText, MBtraceTextOnScreenObserver& aObserver, TBtraceNotificationPersistence aPersistence) |
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137 { |
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138 TTextOnScreenNotif notify(aText, aObserver, aPersistence); |
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139 iScreenNotifs.AppendL(notify); |
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140 } |
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141 |
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142 EXPORT_C void CBtraceTextOnScreen::NotifyTextOnScreenL(const TDesC& aText, TMatchMode aMatchMode, MBtraceTextOnScreenObserver& aObserver, TBtraceNotificationPersistence aPersistence) |
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143 { |
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144 TTextOnScreenNotif notify(aText, aMatchMode, aObserver, aPersistence); |
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145 iScreenNotifs.AppendL(notify); |
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146 } |
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147 |
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148 EXPORT_C void CBtraceTextOnScreen::NotifyTextOnScreenL(const TDesC& aText, TInt aWindowGroupId, TMatchMode aMatchMode, MBtraceTextOnScreenObserver& aObserver) |
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149 { |
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150 NotifyTextOnScreenL(aText, aWindowGroupId, aMatchMode, aObserver, ENotificationOneShot); |
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151 } |
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152 |
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153 EXPORT_C void CBtraceTextOnScreen::NotifyTextOnScreenL(const TDesC& aText, TInt aWindowGroupId, TMatchMode aMatchMode, MBtraceTextOnScreenObserver& aObserver, TBtraceNotificationPersistence aPersistence) |
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154 { |
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155 TTextOnScreenNotif notify(aText, aWindowGroupId, aMatchMode, aObserver, aPersistence); |
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156 iScreenNotifs.AppendL(notify); |
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157 } |
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158 |
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159 EXPORT_C void CBtraceTextOnScreen::CancelNotifyTextOnScreen(MBtraceTextOnScreenObserver& aObserver) |
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160 { |
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161 for (TInt i = iScreenNotifs.Count()-1; i>=0; i--) |
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162 { |
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163 if (iScreenNotifs[i].iObserver == &aObserver) |
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164 { |
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165 iScreenNotifs.Remove(i); |
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166 } |
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167 } |
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168 } |
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169 |
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170 // |
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171 // TTextOnScreenNotif |
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172 // |
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173 CBtraceTextOnScreen::TTextOnScreenNotif::TTextOnScreenNotif(const TDesC& aText, MBtraceTextOnScreenObserver& aObserver, TBtraceNotificationPersistence aPersistence) |
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174 : iTxtPtr(aText), iWindowGroupId(0), iMatchedChars(0), iMatchMode(EWildNonSpanning), iObserver(&aObserver), iPersistence(aPersistence) |
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175 { |
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176 } |
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177 |
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178 CBtraceTextOnScreen::TTextOnScreenNotif::TTextOnScreenNotif(const TDesC& aText, TMatchMode aMatchMode, MBtraceTextOnScreenObserver& aObserver, TBtraceNotificationPersistence aPersistence) |
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179 : iTxtPtr(aText), iWindowGroupId(0), iMatchedChars(0), iMatchMode(aMatchMode), iObserver(&aObserver), iPersistence(aPersistence) |
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180 { |
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181 } |
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182 |
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183 CBtraceTextOnScreen::TTextOnScreenNotif::TTextOnScreenNotif(const TDesC& aText, TInt aWindowGroupId, TMatchMode aMatchMode, MBtraceTextOnScreenObserver& aObserver, TBtraceNotificationPersistence aPersistence) |
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184 : iTxtPtr(aText), iWindowGroupId(aWindowGroupId), iMatchedChars(0), iMatchMode(aMatchMode), iObserver(&aObserver), iPersistence(aPersistence) |
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185 { |
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186 } |