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1 /* |
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2 * Copyright (c) 2008-2009 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: Avkon pointer event modifier. |
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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 #include <aknpointereventmodifier.h> |
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20 #include <coecntrl.h> |
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21 |
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22 // ======== MEMBER FUNCTIONS ======== |
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23 |
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24 // --------------------------------------------------------------------------- |
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25 // CAknPointerEventModifier::NewL |
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26 // --------------------------------------------------------------------------- |
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27 // |
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28 CAknPointerEventModifier* CAknPointerEventModifier::NewL() |
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29 { |
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30 CAknPointerEventModifier* self = new ( ELeave ) CAknPointerEventModifier; |
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31 return self; |
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32 } |
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33 |
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34 // --------------------------------------------------------------------------- |
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35 // CAknPointerEventModifier::~CAknPointerEventModifier() |
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36 // --------------------------------------------------------------------------- |
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37 // |
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38 CAknPointerEventModifier::~CAknPointerEventModifier() |
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39 { |
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40 iStack.Close(); |
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41 } |
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42 |
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43 // --------------------------------------------------------------------------- |
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44 // CAknPointerEventModifier::CAknPointerEventModifier |
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45 // --------------------------------------------------------------------------- |
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46 // |
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47 CAknPointerEventModifier::CAknPointerEventModifier() |
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48 { |
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49 } |
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50 |
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51 // --------------------------------------------------------------------------- |
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52 // CAknPointerEventModifier::Push |
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53 // --------------------------------------------------------------------------- |
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54 // |
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55 EXPORT_C void CAknPointerEventModifier::Push( CCoeControl& aControl, |
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56 const TRect& aRect ) |
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57 { |
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58 // Figure out aControl's window-owning parent. This will also work as a |
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59 // sanity check for the aControl argument. |
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60 CCoeControl* parent = aControl.Parent(); |
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61 |
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62 while ( parent && !parent->OwnsWindow() ) |
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63 { |
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64 parent = parent->Parent(); |
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65 } |
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66 |
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67 if ( !parent ) |
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68 { |
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69 return; |
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70 } |
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71 |
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72 if ( !ControlIsInStack( aControl ) ) |
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73 { |
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74 TStackItem item; |
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75 item.iControl = &aControl; |
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76 item.iParent = parent; |
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77 item.iExtensionArea = aRect; |
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78 |
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79 if ( iStack.Insert( item, 0 ) == KErrNone ) |
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80 { |
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81 iIsValid = EFalse; |
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82 } |
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83 } |
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84 } |
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85 |
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86 // --------------------------------------------------------------------------- |
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87 // CAknPointerEventModifier::Pop |
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88 // --------------------------------------------------------------------------- |
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89 // |
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90 EXPORT_C void CAknPointerEventModifier::Pop( const CCoeControl& aControl ) |
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91 { |
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92 for ( TInt i = 0; i < iStack.Count(); ++i ) |
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93 { |
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94 if ( iStack[i].iControl == &aControl ) |
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95 { |
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96 iStack.Remove( i ); |
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97 iIsValid = EFalse; |
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98 return; |
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99 } |
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100 } |
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101 } |
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102 |
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103 // --------------------------------------------------------------------------- |
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104 // CAknPointerEventModifier::Update |
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105 // --------------------------------------------------------------------------- |
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106 // |
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107 EXPORT_C void CAknPointerEventModifier::Update( const CCoeControl& aControl, |
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108 const TRect& aRect ) |
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109 { |
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110 for ( TInt i = 0; i < iStack.Count(); ++i ) |
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111 { |
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112 if ( iStack[i].iControl == &aControl ) |
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113 { |
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114 iStack[i].iExtensionArea = aRect; |
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115 break; |
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116 } |
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117 } |
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118 } |
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119 |
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120 // --------------------------------------------------------------------------- |
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121 // CAknPointerEventModifier::HandlePointerEvent |
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122 // --------------------------------------------------------------------------- |
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123 // |
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124 EXPORT_C void CAknPointerEventModifier::HandlePointerEvent( TPointerEvent& aEvent, |
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125 CCoeControl*& aDestination ) |
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126 { |
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127 if ( iStack.Count() > 0 && aEvent.iType == TPointerEvent::EButton1Down ) |
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128 { |
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129 if ( !iIsValid ) |
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130 { |
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131 iStack.Sort( CAknPointerEventModifier::Compare ); |
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132 } |
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133 |
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134 for ( TInt i = 0; i < iStack.Count(); ++i ) |
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135 { |
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136 if ( ModifyEvent( iStack[i], aEvent, aDestination ) ) |
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137 { |
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138 break; |
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139 } |
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140 } |
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141 } |
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142 } |
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143 |
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144 // --------------------------------------------------------------------------- |
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145 // CAknPointerEventModifier::Invalidate |
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146 // --------------------------------------------------------------------------- |
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147 // |
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148 void CAknPointerEventModifier::Invalidate() |
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149 { |
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150 iIsValid = ETrue; |
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151 } |
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152 |
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153 // --------------------------------------------------------------------------- |
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154 // CAknPointerEventModifier::ControlIsInStack |
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155 // --------------------------------------------------------------------------- |
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156 // |
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157 TBool CAknPointerEventModifier::ControlIsInStack( const CCoeControl& aControl ) |
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158 { |
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159 for ( TInt i = 0; i < iStack.Count(); ++i ) |
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160 { |
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161 if ( iStack[i].iControl == &aControl ) |
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162 { |
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163 return ETrue; |
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164 } |
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165 } |
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166 |
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167 return EFalse; |
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168 } |
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169 |
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170 // --------------------------------------------------------------------------- |
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171 // CAknPointerEventModifier::ModifyEvent |
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172 // --------------------------------------------------------------------------- |
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173 // |
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174 TBool CAknPointerEventModifier::ModifyEvent( TStackItem& aItem, |
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175 TPointerEvent& aEvent, CCoeControl*& aDestination ) |
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176 { |
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177 TBool wasModified = EFalse; |
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178 |
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179 // Control window's existence has been checked already in |
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180 // CAknPointerEventModifier::Push. |
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181 if ( !aItem.iControl->DrawableWindow()->IsFaded() ) |
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182 { |
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183 TBool isVertical = ( aItem.iControl->Size().iHeight > aItem.iControl->Size().iWidth ); |
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184 |
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185 if ( aDestination == aItem.iParent ) |
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186 { |
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187 // calculate hit area |
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188 TRect hitArea( aItem.iControl->Position() + |
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189 aItem.iExtensionArea.iTl, aItem.iExtensionArea.Size() ); |
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190 TSize controlSize( aItem.iControl->Size() ); |
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191 |
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192 if ( hitArea.Contains( aEvent.iPosition ) ) |
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193 { |
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194 if ( aItem.iControl->OwnsWindow() ) |
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195 { |
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196 aDestination = aItem.iControl; |
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197 |
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198 if ( isVertical ) |
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199 { |
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200 aEvent.iPosition.iX = controlSize.iWidth >> 1; |
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201 aEvent.iPosition.iY -= aItem.iControl->Position().iY; |
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202 } |
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203 else |
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204 { |
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205 aEvent.iPosition.iX -= aItem.iControl->Position().iX; |
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206 aEvent.iPosition.iY = controlSize.iHeight >> 1; |
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207 } |
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208 } |
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209 else |
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210 { |
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211 if ( isVertical ) |
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212 { |
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213 aEvent.iPosition.iX = aItem.iControl->Position().iX + |
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214 ( controlSize.iWidth >> 1 ); |
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215 } |
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216 else |
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217 { |
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218 aEvent.iPosition.iY = aItem.iControl->Position().iY + |
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219 ( controlSize.iHeight >> 1 ); |
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220 } |
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221 } |
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222 |
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223 wasModified = ETrue; |
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224 } |
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225 } |
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226 else if ( aDestination->Parent() && |
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227 aDestination->Parent()->DrawableWindow() == aItem.iParent->DrawableWindow() && |
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228 ( aDestination->Parent() != aItem.iParent )) |
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229 { |
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230 // This branch handles external scrollbars. It should be checked |
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231 // via MOP chain if the aItem.iControl really is a scrollbar before |
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232 // this API is taken into use with other controls. |
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233 TPoint topLeft( aItem.iControl->Position().iX - |
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234 aDestination->Position().iX, |
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235 aItem.iControl->Position().iY - aDestination->Position().iY ); |
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236 TRect hitArea( topLeft + |
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237 aItem.iExtensionArea.iTl, aItem.iExtensionArea.Size() ); |
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238 |
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239 if ( hitArea.Contains( aEvent.iPosition ) ) |
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240 { |
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241 TInt controlPosition = aItem.iControl->Position().iY; |
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242 TInt positionInParent = aEvent.iPosition.iY + aDestination->Position().iY; |
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243 |
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244 if ( isVertical ) |
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245 { |
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246 aEvent.iPosition.iX = aItem.iControl->Size().iWidth >> 1; |
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247 aEvent.iPosition.iY = positionInParent - controlPosition; |
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248 } |
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249 else |
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250 { |
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251 aEvent.iPosition.iX = aEvent.iPosition.iX + |
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252 aDestination->Position().iX - aItem.iControl->Position().iX; |
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253 aEvent.iPosition.iY = aItem.iControl->Size().iHeight >> 1; |
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254 } |
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255 |
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256 aDestination = aItem.iControl; |
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257 |
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258 wasModified = ETrue; |
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259 } |
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260 } |
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261 } |
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262 |
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263 return wasModified; |
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264 } |
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265 |
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266 // --------------------------------------------------------------------------- |
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267 // CAknPointerEventModifier::Compare |
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268 // --------------------------------------------------------------------------- |
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269 // |
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270 TInt CAknPointerEventModifier::Compare( const TStackItem& aFirst, |
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271 const TStackItem& aSecond ) |
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272 { |
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273 TInt retval = -1; // aFirst is in front of aSecond |
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274 TInt firstPosition = aFirst.iParent->DrawableWindow()->OrdinalPosition(); |
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275 TInt secondPosition = aSecond.iParent->DrawableWindow()->OrdinalPosition(); |
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276 |
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277 if ( secondPosition < firstPosition && secondPosition >= 0 ) |
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278 { |
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279 // aSecond is in front of aFirst in z-order |
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280 retval = 1; |
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281 } |
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282 else if ( firstPosition == secondPosition ) |
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283 { |
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284 // aFirst and aSecond have the same parent window |
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285 retval = 0; |
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286 } |
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287 |
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288 return retval; |
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289 } |