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1 /* |
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2 * Copyright (c) 2007 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: The implementation for presentation elements. |
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15 * |
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16 */ |
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17 |
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18 //Toolkit Includes |
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19 #include <alf/alfimagevisual.h> |
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20 #include <alf/alfevent.h> |
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21 #include <alf/alfenv.h> |
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22 #include <AknUtils.h> |
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23 //AknLayout2 includes |
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24 #include <aknlayoutscalable_uiaccel.cdl.h> |
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25 |
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26 // Alfred Client includes |
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27 #include <alf/alfroster.h> |
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28 #include <alf/alfdisplay.h> |
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29 |
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30 //Widget Model Includes |
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31 #include <alf/alflayout.h> |
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32 #include "alf/alfelement.h" |
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33 #include <alf/alfwidgeteventhandler.h> |
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34 #include <alf/alfwidgetenvextension.h> |
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35 #include <alf/ialfmodel.h> |
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36 |
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37 //scrollbar widget includes |
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38 #include <alf/alfscrollevents.h> |
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39 #include "alfscrollbardefaultbaseelement.h" |
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40 #include "alfscrollbarwidget.h" |
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41 #include "alfscrollbarcontrol.h" |
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42 #include "alfscrollbarmodel.h" |
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43 #include "alfscrollbarlongtaptimer.h" |
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44 |
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45 #include <math.h> |
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46 |
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47 enum |
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48 { |
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49 EReleased, |
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50 ETrackPressed, |
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51 EThumbPressed |
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52 }; |
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53 |
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54 // EPSILON is an small constant used to compare two real values |
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55 const float KEpsilon = 0.000001; |
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56 |
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57 namespace Alf |
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58 { |
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59 |
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60 // --------------------------------------------------------------------------- |
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61 // A function to compare two real values. The difference less than aEpsilon |
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62 // is assumed negligible. |
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63 // --------------------------------------------------------------------------- |
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64 // |
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65 inline int realCompare(float aReal1, float aReal2, float aEpsilon) |
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66 { |
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67 if (Abs(aReal1-aReal2) < aEpsilon) |
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68 { |
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69 return 0; |
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70 } |
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71 else if ((aReal1-aReal2) > 0) |
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72 { |
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73 return 1; |
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74 } |
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75 else |
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76 { |
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77 return -1; |
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78 } |
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79 }; |
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80 |
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81 struct ScrollBarBaseElementData |
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82 { |
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83 TOperation mOperation; // Thumb Drag |
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84 CAlfVisual* mVisual; // Hit visual |
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85 TPoint mDragPoint; // Current pointer value |
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86 TPoint mLongTapPos; // Long Tap Point |
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87 int mDragStartStep; // Value of view start position when drag starts |
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88 int mCurrentState; // track or thumb clicked state indicator |
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89 bool mLongTapStarted; // Long Tap Timer started ( true if started) |
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90 |
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91 int mViewLength; // For avoiding thumb length calculation |
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92 // everytime when model data changes |
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93 // Stores current viewLength |
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94 |
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95 int mTotalLength; // For avoiding thumb length calculation |
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96 // everytime when model data changes |
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97 // Stores current spanLength |
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98 |
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99 float mWidgetOpacity; // default value =1.0. |
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100 float mThumbOpacity; // default value =1.0. thumb will eventually have |
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101 // opacity=iWidgetOpacity*iThumbOpacity. |
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102 |
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103 int mThumbAnimationTime; // thumb animation time in milliseconds. |
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104 float mThumbLength; // Length of scrollbar thumb |
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105 float mThumbMinLength; // Minimum Length of thumb |
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106 float mThumbMaxLength; // Maximum Length of thumb |
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107 float mStepSize; // Step Size |
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108 bool mThumbSizeChanged; // flag to indicate whether thumbSize is Changed. |
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109 int mExtendedTouch; // extended area width. |
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110 AlfScrollBarModel* mScrollbarModel; // Pointer to scrollbar model |
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111 |
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112 CAlfLayout* mRootLayout ; // Layouts and visuals |
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113 CAlfLayout* mTrackLayout ; |
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114 CAlfLayout* mExtendedTrackLayout; |
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115 CAlfLayout* mThumbLayout ; |
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116 CAlfLayout* mExtendedThumbLayout; |
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117 |
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118 CAlfImageVisual* mTrackTopImage ; |
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119 CAlfImageVisual* mTrackMiddleImage ; |
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120 CAlfImageVisual* mTrackEndImage ; |
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121 |
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122 CAlfImageVisual* mThumbTopImage ; |
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123 CAlfImageVisual* mThumbMiddleImage ; |
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124 CAlfImageVisual* mThumbEndImage ; |
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125 };//End of struct ScrollBarBaseElementData |
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126 |
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127 struct ScrollbarThumbLCTData |
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128 { |
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129 TInt left; //used to specify left value |
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130 TInt top; //used to specify top value |
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131 TInt right; //used to specify right value |
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132 TInt bottom; //used to specify bottom value |
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133 TInt height; //used to specify height value |
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134 TInt width; //used to specify width value |
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135 }; |
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136 |
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137 // --------------------------------------------------------------------------- |
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138 // C++ default constructor. |
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139 // --------------------------------------------------------------------------- |
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140 // |
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141 AlfScrollBarDefaultBaseElement::AlfScrollBarDefaultBaseElement( |
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142 CAlfWidgetControl& aControl, |
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143 const char* aName, |
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144 DuiNode* /*mNode*/, |
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145 AlfCustomInitDataBase* /*aCustomData*/) |
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146 : mData(NULL) |
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147 { |
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148 try |
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149 { |
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150 // Base class (AlfElement) construct |
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151 construct(aControl, aName); |
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152 |
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153 mLongTapTimer.reset( |
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154 new (EMM) AlfScrollBarLongTapTimer(this)); |
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155 |
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156 mIsLongTapObserverSet=EFalse; |
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157 //For Imperative construct |
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158 createDefaultBaseElement(); |
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159 } |
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160 catch(AlfException& e) |
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161 { |
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162 aControl.removeElement(*this); |
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163 throw; |
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164 } |
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165 // AlfScrollBarDefaultBaseElement is an event handler too so it |
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166 // should be added to the control |
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167 aControl.addEventHandler(this); |
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168 } |
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169 |
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170 // --------------------------------------------------------------------------- |
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171 // Destructor |
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172 // --------------------------------------------------------------------------- |
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173 // |
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174 AlfScrollBarDefaultBaseElement::~AlfScrollBarDefaultBaseElement() |
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175 { |
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176 |
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177 if(mData) |
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178 { |
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179 delete mData; |
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180 } |
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181 else |
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182 { |
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183 |
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184 } |
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185 if(mLCTData) |
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186 { |
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187 delete mLCTData; |
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188 } |
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189 else |
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190 { |
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191 |
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192 } |
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193 }//End of Destructor |
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194 |
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195 //-------------------------------------------------------------------------- |
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196 // APIs from the IAlfScrollBarDefaultBaseElement for controlling the |
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197 // visualization of the scrollbar |
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198 //-------------------------------------------------------------------------- |
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199 |
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200 |
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201 // --------------------------------------------------------------------------- |
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202 // Sets the thumb animation time. |
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203 // @aTime : Time in miliseconds |
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204 // @exception : for aTime less then O.0 miliseconds |
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205 // --------------------------------------------------------------------------- |
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206 // |
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207 void AlfScrollBarDefaultBaseElement::setThumbAnimationTime ( int aTime ) |
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208 { |
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209 // Sanity check |
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210 if (aTime < 0) |
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211 { |
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212 ALF_THROW(AlfException, EInvalidArgument, "AnimationTime is invalid"); |
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213 } |
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214 else |
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215 { |
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216 // do nothing |
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217 } |
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218 |
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219 if(mData->mThumbAnimationTime != aTime) |
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220 { |
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221 mData->mThumbAnimationTime = aTime; |
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222 } |
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223 } |
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224 |
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225 // --------------------------------------------------------------------------- |
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226 // From class IAlfScrollBarWdget. |
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227 // --------------------------------------------------------------------------- |
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228 // |
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229 int AlfScrollBarDefaultBaseElement::getThumbAnimationTime() const |
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230 { |
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231 return mData->mThumbAnimationTime; |
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232 } |
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233 |
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234 // --------------------------------------------------------------------------- |
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235 // Sets opacity value for the Thumb. |
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236 // Thumb opacity is relative to the track. |
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237 // @param : aOpacity float value between 0.0 to 1.0 |
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238 // @exception : value of aOpacity more than 1.0 and less than 0.0 |
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239 // --------------------------------------------------------------------------- |
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240 // |
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241 void AlfScrollBarDefaultBaseElement::setThumbOpacity (float aOpacity) |
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242 { |
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243 // Sanity check |
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244 if (realCompare(aOpacity, 0.0, KEpsilon) < 0 |
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245 || realCompare(aOpacity, 1.0, KEpsilon) > 0) |
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246 { |
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247 ALF_THROW(AlfException, EInvalidArgument, "Opacity is invalid"); |
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248 } |
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249 else |
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250 { |
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251 // do nothing |
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252 } |
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253 // if there is a change, update the visualization |
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254 if (aOpacity != mData->mThumbOpacity) |
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255 { |
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256 mData->mThumbOpacity = aOpacity; |
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257 const TAlfTimedValue opacity(mData->mThumbOpacity * mData->mWidgetOpacity); |
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258 if(mData->mThumbLayout) |
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259 { |
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260 mData->mThumbLayout->SetOpacity(opacity); |
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261 control().Visual(0).UpdateChildrenLayout(); |
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262 } |
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263 } |
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264 }//End of setThumbOpacity |
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265 |
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266 // --------------------------------------------------------------------------- |
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267 // Returns Thumb opacity is relative to the track. |
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268 // --------------------------------------------------------------------------- |
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269 // |
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270 float AlfScrollBarDefaultBaseElement::getThumbOpacity() const |
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271 { |
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272 return mData->mThumbOpacity; |
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273 } |
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274 |
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275 // --------------------------------------------------------------------------- |
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276 // Sets opacity value for the widget. |
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277 // |
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278 // @param : aOpacity float value between 0.0 to 1.0 |
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279 // @exception : value of aOpacity more than 1.0 and less than 0.0 |
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280 // --------------------------------------------------------------------------- |
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281 // |
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282 void AlfScrollBarDefaultBaseElement::setOpacity (float aOpacity) |
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283 { |
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284 // Sanity check |
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285 if (realCompare(aOpacity, 0.0, KEpsilon) < 0 |
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286 || realCompare(aOpacity, 1.0, KEpsilon) > 0) |
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287 { |
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288 ALF_THROW(AlfException, EInvalidArgument, "Opacity is invalid"); |
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289 } |
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290 else |
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291 { |
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292 // do nothing |
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293 } |
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294 // if there is a change, update the visualization |
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295 if (aOpacity != mData->mWidgetOpacity) |
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296 { |
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297 mData->mWidgetOpacity = aOpacity; |
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298 const TAlfTimedValue opacity(mData->mWidgetOpacity); |
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299 if(mData->mTrackLayout) |
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300 { |
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301 mData->mRootLayout->SetOpacity(opacity); |
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302 control().Visual(0).UpdateChildrenLayout(); |
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303 } |
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304 } |
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305 }//End of setThumbOpacity |
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306 |
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307 // --------------------------------------------------------------------------- |
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308 // Returns Widget opacity is relative to the track. |
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309 // --------------------------------------------------------------------------- |
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310 // |
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311 float AlfScrollBarDefaultBaseElement::getOpacity() const |
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312 { |
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313 return mData->mWidgetOpacity; |
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314 } |
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315 |
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316 //-------------------------------------------------------------------------- |
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317 // APIs from the IAlfScrollBarBaseElement |
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318 //-------------------------------------------------------------------------- |
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319 |
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320 // --------------------------------------------------------------------------- |
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321 // Gets called when the parent layout is relayouted. |
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322 // resets all the anchor points and updates the visualization |
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323 // --------------------------------------------------------------------------- |
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324 // |
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325 void AlfScrollBarDefaultBaseElement::baseLayoutSizeChanged() |
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326 { |
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327 initializeLayout(); |
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328 } |
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329 |
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330 // --------------------------------------------------------------------------- |
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331 // processPointerEvent generates custom events |
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332 // according the focus visual . |
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333 // --------------------------------------------------------------------------- |
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334 // |
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335 bool AlfScrollBarDefaultBaseElement::processPointerEvent(TAlfEvent * aPntrEvent) |
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336 { |
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337 // retrieve pointer event (NULL check not required here) |
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338 // Get the hit visual |
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339 CAlfVisual *focusvisual =aPntrEvent->Visual(); |
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340 |
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341 if ( aPntrEvent->IsPointerEvent() ) |
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342 { |
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343 if (aPntrEvent->PointerEvent().iType == TPointerEvent::EButton1Down) |
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344 { |
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345 bool ret = handlePointerDownEvent(aPntrEvent); |
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346 return ret; |
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347 } |
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348 else if (aPntrEvent->PointerEvent().iType == TPointerEvent::EDrag) |
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349 { |
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350 if(!mData->mOperation) |
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351 { |
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352 // Drag during tap and hold on track |
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353 if(mIsLongTapObserverSet) |
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354 { |
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355 mData->mLongTapPos=aPntrEvent->PointerEvent().iParentPosition; |
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356 } |
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357 else |
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358 { |
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359 //Do Nothing. |
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360 } |
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361 } |
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362 else |
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363 { |
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364 // Drag on thumb |
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365 if(mIsLongTapObserverSet && |
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366 mData->mVisual && (isScrollbarThumbVisual(focusvisual)) ) |
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367 { |
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368 mData->mLongTapPos= aPntrEvent->PointerEvent().iParentPosition ; |
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369 } |
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370 else |
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371 { |
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372 // Do nothing |
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373 } |
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374 int dist = aPntrEvent->PointerEvent().iParentPosition.iY - mData->mDragPoint.iY; |
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375 int steps = ceil(dist / mData->mStepSize) + mData->mDragStartStep; |
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376 |
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377 // checking steps to avoid negative value, incase of max scrollbar length |
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378 if( steps > mData->mScrollbarModel->getTotalLength() - mData->mScrollbarModel->getViewLength()) |
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379 { |
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380 steps = mData->mScrollbarModel->getTotalLength() - mData->mScrollbarModel->getViewLength(); |
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381 } |
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382 else if(steps < 0 ) |
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383 { |
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384 steps = 0; |
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385 } |
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386 if(steps != mData->mScrollbarModel->getViewStartPosition()) |
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387 { |
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388 // send tactile sensitive event |
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389 //control().processEvent(TAlfEvent(EEventScrollBarDrag)); |
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390 TAlfEvent customevent(EEventDragVertical,(TInt )steps); |
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391 control().processEvent(customevent); |
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392 } |
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393 // Tactile Feedback for Thumb drag |
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394 AlfScrollBarControl& slbrcntrl = static_cast<AlfScrollBarControl&>(control()); |
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395 slbrcntrl.TactileEffectOnDrag(*aPntrEvent); |
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396 } |
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397 } |
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398 |
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399 else if(aPntrEvent->PointerUp() ) |
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400 { |
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401 mData->mLongTapStarted = false; |
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402 handlePointerUpEvent(); |
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403 } |
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404 else |
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405 { |
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406 //Do Nothing. |
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407 } |
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408 } |
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409 |
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410 return true; |
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411 }//End of processPointerEvent |
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412 |
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413 void AlfScrollBarDefaultBaseElement::createVisualization() |
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414 { |
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415 initializeScrollModel(); |
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416 CAlfWidgetControl *ctrl = &control(); |
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417 |
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418 // Create Root Layout |
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419 mData->mRootLayout = CAlfLayout::AddNewL(*((CAlfControl*)ctrl),NULL); |
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420 mData->mRootLayout->SetFlag(EAlfVisualFlagLayoutUpdateNotification); |
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421 mData->mRootLayout->SetFlag( EAlfVisualFlagAutomaticLocaleMirroringEnabled ); |
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422 |
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423 // Create Track Layout |
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424 mData->mTrackLayout = CAlfLayout::AddNewL(*((CAlfControl*)ctrl),mData->mRootLayout); |
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425 mData->mTrackLayout->SetFlag( EAlfVisualFlagAutomaticLocaleMirroringEnabled ); |
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426 mData->mExtendedTrackLayout = CAlfLayout::AddNewL(*((CAlfControl*)ctrl),mData->mTrackLayout); |
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427 |
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428 if(mData->mTrackLayout) |
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429 { |
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430 mData->mTrackTopImage = CAlfImageVisual::AddNewL( |
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431 *((CAlfControl*)ctrl),mData->mTrackLayout); |
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432 mData->mTrackMiddleImage = CAlfImageVisual::AddNewL( |
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433 *((CAlfControl*)ctrl),mData->mTrackLayout); |
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434 mData->mTrackEndImage = CAlfImageVisual::AddNewL( |
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435 *((CAlfControl*)ctrl),mData->mTrackLayout); |
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436 |
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437 if(mData->mTrackTopImage && |
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438 mData->mTrackMiddleImage && |
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439 mData->mTrackEndImage) |
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440 { |
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441 setTrackImage(); |
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442 } |
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443 |
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444 // Create Thumb Visuals |
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445 mData->mThumbLayout = CAlfLayout::AddNewL(*((CAlfControl*)ctrl), |
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446 mData->mRootLayout); |
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447 mData->mThumbLayout->SetFlag( EAlfVisualFlagAutomaticLocaleMirroringEnabled ); |
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448 mData->mExtendedThumbLayout = CAlfLayout::AddNewL(*((CAlfControl*)ctrl), |
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449 mData->mThumbLayout); |
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450 |
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451 if(mData->mThumbLayout) |
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452 { |
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453 mData->mThumbTopImage = CAlfImageVisual::AddNewL( |
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454 *((CAlfControl*)ctrl),mData->mThumbLayout); |
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455 mData->mThumbMiddleImage = CAlfImageVisual::AddNewL( |
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456 *((CAlfControl*)ctrl),mData->mThumbLayout); |
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457 mData->mThumbEndImage = CAlfImageVisual::AddNewL( |
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458 *((CAlfControl*)ctrl),mData->mThumbLayout); |
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459 |
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460 if(mData->mThumbTopImage && |
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461 mData->mThumbMiddleImage && |
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462 mData->mThumbEndImage) |
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463 { |
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464 setThumbImage(); |
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465 } |
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466 } |
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467 } |
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468 } |
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469 |
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470 void AlfScrollBarDefaultBaseElement::updateVisualization() |
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471 { |
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472 calculateStepSizeAndThumbLength(); |
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473 if(mData->mViewLength != mData->mScrollbarModel->getViewLength() || mData->mTotalLength != mData->mScrollbarModel->getTotalLength()) |
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474 { |
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475 mData->mViewLength = mData->mScrollbarModel->getViewLength(); |
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476 mData->mTotalLength = mData->mScrollbarModel->getTotalLength(); |
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477 initializeThumbLayout(); |
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478 } |
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479 TAlfRealPoint thumbPos; |
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480 thumbPos.iX = mData->mThumbLayout->Pos().iX.ValueNow(); |
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481 thumbPos.iY = ceil(mData->mStepSize * mData->mScrollbarModel->getViewStartPosition()); |
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482 mData->mThumbLayout->SetPos(thumbPos,mData->mThumbAnimationTime); |
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483 } |
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484 |
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485 void AlfScrollBarDefaultBaseElement::destroyVisualization() |
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486 { |
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487 mData->mRootLayout->RemoveAndDestroyAllD(); |
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488 delete mData; |
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489 delete mLCTData; |
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490 createDefaultBaseElement(); |
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491 } |
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492 |
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493 // --------------------------------------------------------------------------- |
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494 // From class MAlfInterfaceBase. |
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495 // Getter for interfaces provided by the scrollbar widget. |
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496 // --------------------------------------------------------------------------- |
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497 // |
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498 IAlfInterfaceBase* AlfScrollBarDefaultBaseElement::makeInterface( |
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499 const IfId& aType) |
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500 { |
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501 UString param (aType.mImplementationId); |
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502 if (param == |
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503 IAlfScrollBarDefaultBaseElement::type().mImplementationId) |
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504 { |
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505 return static_cast<IAlfScrollBarDefaultBaseElement*>(this); |
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506 } |
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507 else if (param == IAlfWidgetEventHandler::type().mImplementationId) |
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508 { |
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509 return static_cast<IAlfWidgetEventHandler*>(this); |
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510 } |
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511 |
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512 else if (param == |
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513 IAlfScrollBarBaseElementInternal::type().mImplementationId) |
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514 { |
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515 return static_cast<IAlfScrollBarBaseElementInternal*>(this); |
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516 } |
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517 else |
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518 { |
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519 //do nothing |
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520 } |
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521 return AlfElement::makeInterface(aType); |
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522 } |
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523 |
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524 // --------------------------------------------------------------------------- |
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525 // handles the pointerDown event |
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526 // |
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527 // --------------------------------------------------------------------------- |
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528 // |
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529 bool AlfScrollBarDefaultBaseElement::handlePointerDownEvent(TAlfEvent * aPntrEvent) |
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530 { |
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531 CAlfVisual * focusvisual = aPntrEvent->Visual(); |
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532 AlfEventStatus result = EEventNotHandled; |
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533 |
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534 if (focusvisual) |
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535 { |
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536 mData->mVisual = focusvisual; |
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537 |
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538 // Register with the Roster to receive drag Event |
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539 control().Display()->Roster().SetPointerEventObservers( |
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540 EAlfPointerEventReportDrag ,control()); |
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541 |
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542 if(!mData->mOperation) |
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543 { |
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544 mIsLongTapObserverSet = ETrue; |
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545 mData->mLongTapPos = aPntrEvent->PointerEvent().iParentPosition; |
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546 mData->mLongTapStarted = true; |
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547 control().processEvent(TAlfEvent(EEventScrollBarTouchDown)); |
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548 mLongTapTimer->Start(); |
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549 } |
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550 |
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551 // Pointer down on track |
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552 if (isScrollbarTrackVisual(focusvisual)) |
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553 { |
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554 mData->mLongTapStarted = true; |
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555 return trackVisualHit(focusvisual); |
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556 } |
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557 |
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558 // Pointer down on thumb |
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559 else if (isScrollbarThumbVisual(focusvisual)) |
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560 { |
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561 if(!mData->mOperation) |
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562 { |
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563 initializeThumbDragData( aPntrEvent->PointerEvent().iParentPosition); |
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564 AlfScrollBarControl& slbrcntrl = static_cast<AlfScrollBarControl&>(control()); |
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565 slbrcntrl.TactileEffectOnTouchandHold(); |
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566 } |
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567 result = EEventHandled; |
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568 } |
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569 } |
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570 return result; |
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571 } |
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572 |
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573 // --------------------------------------------------------------------------- |
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574 // Sends drag Up or Down event, according to the hit position |
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575 // on track |
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576 // --------------------------------------------------------------------------- |
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577 // |
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578 AlfEventStatus AlfScrollBarDefaultBaseElement::trackVisualHit(CAlfVisual * /*aHitVisual*/) |
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579 { |
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580 //Get Co-Ordinates of the click event |
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581 //Find the thumb Anchor Layout. |
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582 TAlfTimedPoint thumbVisPos = mData->mThumbLayout->Pos(); |
|
583 TAlfTimedPoint thumbVisSize =mData->mThumbLayout->Size(); |
|
584 TAlfRealRect rct= mData->mTrackLayout->DisplayRect() ; |
|
585 //Check if click was above/below of thumb |
|
586 if (mData->mLongTapPos.iY - rct.iTl.iY < thumbVisPos.iY.ValueNow()) |
|
587 { |
|
588 if(mData->mLongTapStarted) |
|
589 { |
|
590 //control().processEvent(TAlfEvent(EEventScrollBarDrag)); |
|
591 control().processEvent(TAlfEvent (EEventScrollPageUp)); |
|
592 } |
|
593 } |
|
594 else if (mData->mLongTapPos.iY - rct.iTl.iY > (thumbVisPos.iY.ValueNow() + |
|
595 thumbVisSize.iY.ValueNow()) ) |
|
596 { |
|
597 if(mData->mLongTapStarted) |
|
598 { |
|
599 //control().processEvent(TAlfEvent(EEventScrollBarDrag)); |
|
600 control().processEvent(TAlfEvent(EEventScrollPageDown)); |
|
601 } |
|
602 } |
|
603 else |
|
604 { |
|
605 if(mIsLongTapObserverSet) |
|
606 { |
|
607 // Stop the long tap timer |
|
608 mLongTapTimer->Stop(); |
|
609 mData->mLongTapStarted = false; |
|
610 //mIsLongTapObserverSet = EFalse; |
|
611 } |
|
612 else |
|
613 { |
|
614 //Do Nothing. |
|
615 } |
|
616 } |
|
617 return EEventHandled; |
|
618 } |
|
619 |
|
620 // --------------------------------------------------------------------------- |
|
621 // handles the pointerUp event |
|
622 // |
|
623 // --------------------------------------------------------------------------- |
|
624 // |
|
625 void AlfScrollBarDefaultBaseElement::handlePointerUpEvent() |
|
626 { |
|
627 // if thumb or track is clicked, change the graphics |
|
628 if(mData->mCurrentState == ETrackPressed || mData->mCurrentState == EThumbPressed) |
|
629 { |
|
630 mData->mCurrentState = EReleased; |
|
631 changeGraphics(); |
|
632 } |
|
633 |
|
634 if(mData->mOperation) |
|
635 { |
|
636 //Somehow missed the Up event |
|
637 stopDrag(NULL,0); |
|
638 AlfScrollBarControl& slbrcntrl = static_cast<AlfScrollBarControl&>(control()); |
|
639 slbrcntrl.TactileEffectOnRelease(); |
|
640 } |
|
641 if(mIsLongTapObserverSet) |
|
642 { |
|
643 // Stop the long tap timer |
|
644 mLongTapTimer->Stop(); |
|
645 |
|
646 // Un-register with the roster for long tap events |
|
647 control().Display()->Roster().SetPointerEventObservers(0, |
|
648 control()); |
|
649 mIsLongTapObserverSet = EFalse; |
|
650 } |
|
651 } |
|
652 |
|
653 AlfEventStatus AlfScrollBarDefaultBaseElement::handleLongTapEvent() |
|
654 { |
|
655 AlfEventStatus ret= EEventNotHandled; |
|
656 |
|
657 if (isScrollbarTrackVisual(mData->mVisual)) |
|
658 { |
|
659 mData->mLongTapStarted = true; |
|
660 ret = trackVisualHit(mData->mVisual); |
|
661 // Long tap Tactile feedback |
|
662 AlfScrollBarControl& slbrcntrl = static_cast<AlfScrollBarControl&>(control()); |
|
663 slbrcntrl.TactileEffectOnTouchandHold(); |
|
664 } |
|
665 return ret; |
|
666 } |
|
667 |
|
668 //-------------------------------------------------------------------------- |
|
669 //Overriden Apis from IAlfWidgetEventHandlers |
|
670 //-------------------------------------------------------------------------- |
|
671 // |
|
672 |
|
673 // --------------------------------------------------------------------------- |
|
674 // From class IAlfWidgetEventHandler. |
|
675 // --------------------------------------------------------------------------- |
|
676 // |
|
677 bool AlfScrollBarDefaultBaseElement::accept( |
|
678 CAlfWidgetControl& /*aControl*/, |
|
679 const TAlfEvent& aEvent ) const |
|
680 { |
|
681 // Scrollbar baseElement handles only EEventScrollBarClicked |
|
682 // and EEventScrollBarClicked cusbtom events |
|
683 // EEventScrollBarClicked event come from scrollbar control and |
|
684 // EEventScrollBarModelChanged event comes from scrollable widget |
|
685 if (aEvent.CustomParameter() == EEventScrollBarClicked || |
|
686 aEvent.CustomParameter() == EEventScrollBarModelChanged) |
|
687 { |
|
688 return true; |
|
689 } |
|
690 return false; |
|
691 } |
|
692 |
|
693 IAlfWidgetEventHandler::AlfEventHandlerType AlfScrollBarDefaultBaseElement::eventHandlerType() |
|
694 { |
|
695 return IAlfWidgetEventHandler::EPresentationEventHandler; |
|
696 } |
|
697 |
|
698 IAlfWidgetEventHandler::AlfEventHandlerExecutionPhase AlfScrollBarDefaultBaseElement::eventExecutionPhase() |
|
699 { |
|
700 return IAlfWidgetEventHandler::ETunnellingPhaseEventHandler; |
|
701 } |
|
702 |
|
703 AlfEventStatus AlfScrollBarDefaultBaseElement::offerEvent( |
|
704 CAlfWidgetControl& /*aControl*/, |
|
705 const TAlfEvent& aEvent ) |
|
706 { |
|
707 AlfEventStatus ret= EEventNotHandled; |
|
708 // Dont do event handling incase widget & thumb opacity is zero |
|
709 if(mData->mWidgetOpacity && mData->mThumbOpacity ) |
|
710 { |
|
711 if (aEvent.IsCustomEvent()) |
|
712 { |
|
713 switch(aEvent.CustomParameter()) |
|
714 { |
|
715 // The event is coming from scrollbale widget |
|
716 case EEventScrollBarModelChanged: |
|
717 { |
|
718 if( mData->mScrollbarModel) |
|
719 { |
|
720 ScrollModelChangedEventData* scrollEventData = |
|
721 (ScrollModelChangedEventData*)aEvent.CustomEventData(); |
|
722 |
|
723 // Change the model which intern will update visualization |
|
724 mData->mScrollbarModel->changeData( |
|
725 scrollEventData->mSpan, |
|
726 scrollEventData->mViewLength, |
|
727 scrollEventData->mViewStartPos); |
|
728 ret=EEventHandled; |
|
729 } |
|
730 } |
|
731 break; |
|
732 |
|
733 case EEventMissedPointerUp: |
|
734 { |
|
735 mData->mLongTapStarted = false; |
|
736 ret=EEventHandled; |
|
737 handlePointerUpEvent(); |
|
738 } |
|
739 break; |
|
740 |
|
741 case EEventScrollBarClicked: |
|
742 { |
|
743 ret = handleScrollBarClickedEvent(aEvent); |
|
744 } |
|
745 break; |
|
746 |
|
747 default: |
|
748 break; |
|
749 } |
|
750 } |
|
751 } |
|
752 return ret; |
|
753 } |
|
754 |
|
755 AlfEventStatus AlfScrollBarDefaultBaseElement::handleScrollBarClickedEvent( |
|
756 const TAlfEvent& aEvent ) |
|
757 { |
|
758 AlfEventStatus ret= EEventNotHandled; |
|
759 TAlfEvent * pntrEvent=(TAlfEvent *)aEvent.CustomEventData(); |
|
760 if(pntrEvent) |
|
761 { |
|
762 // Get the hit visual |
|
763 CAlfVisual *focusvisual = pntrEvent->Visual(); |
|
764 if(focusvisual && |
|
765 pntrEvent->PointerEvent().iType == TPointerEvent::EButton1Down) |
|
766 { |
|
767 // check if the click is made on thumb |
|
768 if (isScrollbarThumbVisual(focusvisual)) |
|
769 { |
|
770 mData->mCurrentState = EThumbPressed; |
|
771 // Change the graphics to pressed one |
|
772 changeGraphics(); |
|
773 } |
|
774 else if (isScrollbarTrackVisual(focusvisual)) |
|
775 { |
|
776 mData->mCurrentState = ETrackPressed; |
|
777 // Change the graphics to pressed one |
|
778 changeGraphics(); |
|
779 } |
|
780 } |
|
781 // Blocking event processing in case of maxthumblength, |
|
782 // case 1 : revert back the graphics change incase of maxscrollbar length |
|
783 if(pntrEvent->PointerUp() && mData->mScrollbarModel->getViewLength() >= mData->mScrollbarModel->getTotalLength()) |
|
784 { |
|
785 handlePointerUpEvent(); |
|
786 } |
|
787 // case 2 : process the event in all other case except max length |
|
788 else if( mData->mScrollbarModel->getViewLength() != mData->mScrollbarModel->getTotalLength()) |
|
789 { |
|
790 processPointerEvent(pntrEvent); |
|
791 } |
|
792 // case2 : do nothing incase of maxscrollbar length |
|
793 else |
|
794 { |
|
795 // do nothing |
|
796 } |
|
797 ret = EEventHandled; |
|
798 } |
|
799 else |
|
800 { |
|
801 ret = EEventNotHandled; |
|
802 } |
|
803 |
|
804 return ret; |
|
805 } |
|
806 |
|
807 void AlfScrollBarDefaultBaseElement::setActiveStates( |
|
808 unsigned int /*aStates*/) |
|
809 { |
|
810 //do nothing |
|
811 } |
|
812 |
|
813 // --------------------------------------------------------------------------- |
|
814 // From class IAlfScrollBarBaseElementInternal. |
|
815 // --------------------------------------------------------------------------- |
|
816 // |
|
817 |
|
818 // --------------------------------------------------------------------------- |
|
819 // initializes scrollbar layout |
|
820 // --------------------------------------------------------------------------- |
|
821 // |
|
822 void AlfScrollBarDefaultBaseElement::initializeLayout() |
|
823 { |
|
824 setThumbMinMaxLength(); |
|
825 calculateStepSizeAndThumbLength(); |
|
826 initializeTrackLayout(); |
|
827 initializeThumbLayout(); |
|
828 } |
|
829 |
|
830 // --------------------------------------------------------------------------- |
|
831 // initializes scrollbar Track layout |
|
832 // --------------------------------------------------------------------------- |
|
833 // |
|
834 void AlfScrollBarDefaultBaseElement::initializeTrackLayout() |
|
835 { |
|
836 |
|
837 TAknWindowLineLayout ExtendedTrackLayoutHandle = |
|
838 AknLayoutScalable_UiAccel:: |
|
839 aid_size_touch_aascroll_bar(0).LayoutLine(); |
|
840 // negative offset for the extended active area layout. |
|
841 // Width values based on LCT data for extended touch |
|
842 mData->mExtendedTouch = - (ExtendedTrackLayoutHandle.iW - |
|
843 mData->mRootLayout->Size().iX.ValueNow()); |
|
844 |
|
845 // Create Track Visuals |
|
846 if(mData->mTrackLayout) |
|
847 { |
|
848 TAknWindowLineLayout TrackLayoutHandle = |
|
849 AknLayoutScalable_UiAccel:: hc_scroll_bg_pane(0).LayoutLine(); |
|
850 |
|
851 // Root layout rect, parent rect for track and thumb layout |
|
852 TRect rootLayoutRect(0, |
|
853 0, |
|
854 mData->mRootLayout->Size().iX.ValueNow(), |
|
855 mData->mRootLayout->Size().iY.ValueNow()); |
|
856 |
|
857 TAknLayoutRect TracklayoutRect; |
|
858 TracklayoutRect.LayoutRect(rootLayoutRect, TrackLayoutHandle); |
|
859 mData->mTrackLayout->SetRect(TracklayoutRect.Rect(),0.0); |
|
860 |
|
861 // set position and size for extended track layout |
|
862 setPositionAndSize(mData->mExtendedTrackLayout, |
|
863 mData->mExtendedTouch,0 , |
|
864 mData->mExtendedTouch, |
|
865 mData->mTrackLayout->Size().iY.ValueNow()); |
|
866 |
|
867 if(mData->mTrackTopImage && |
|
868 mData->mTrackMiddleImage && |
|
869 mData->mTrackEndImage) |
|
870 { |
|
871 // parent rect for track images |
|
872 TRect Trackrect(0, |
|
873 0, |
|
874 mData->mTrackLayout->Size().iX.ValueNow(), |
|
875 mData->mTrackLayout->Size().iY.ValueNow()); |
|
876 |
|
877 TAknWindowLineLayout TrackTopHandle = |
|
878 AknLayoutScalable_UiAccel::hc_scroll_bg_pane_g1(0).LayoutLine(); |
|
879 setLCTData(Trackrect,TrackTopHandle,mData->mTrackTopImage); |
|
880 |
|
881 TAknWindowLineLayout TrackMiddleHandle = |
|
882 AknLayoutScalable_UiAccel::hc_scroll_bg_pane_g2(0).LayoutLine(); |
|
883 setLCTData(Trackrect,TrackMiddleHandle,mData->mTrackMiddleImage); |
|
884 |
|
885 TAknWindowLineLayout TrackEndHandle = |
|
886 AknLayoutScalable_UiAccel::hc_scroll_bg_pane_g3(0).LayoutLine(); |
|
887 setLCTData(Trackrect,TrackEndHandle,mData->mTrackEndImage); |
|
888 } |
|
889 } |
|
890 } |
|
891 |
|
892 // --------------------------------------------------------------------------- |
|
893 // initializes scrollbar Thumb layout |
|
894 // --------------------------------------------------------------------------- |
|
895 // |
|
896 void AlfScrollBarDefaultBaseElement::initializeThumbLayout() |
|
897 { |
|
898 // Create Track Visuals |
|
899 if(mData->mTrackLayout) |
|
900 { |
|
901 if(mData->mThumbLayout) |
|
902 { |
|
903 // Get thumb WindowLine Layout |
|
904 TAknWindowLineLayout ThumbLayoutHandle = |
|
905 AknLayoutScalable_UiAccel::hc_scroll_handle_pane(0).LayoutLine(); |
|
906 |
|
907 // Root layout rect, parent rect for track and thumb layout |
|
908 TRect rootLayoutRect(0, |
|
909 0, |
|
910 mData->mRootLayout->Size().iX.ValueNow(), |
|
911 mData->mRootLayout->Size().iY.ValueNow()); |
|
912 |
|
913 TAknLayoutRect ThumblayoutRect; |
|
914 ThumblayoutRect.LayoutRect(rootLayoutRect, ThumbLayoutHandle); |
|
915 |
|
916 // set thumb height and thumb start position from model |
|
917 mLCTData->height = mData->mThumbLength; |
|
918 |
|
919 mLCTData->top = |
|
920 ceil(mData->mStepSize * mData->mScrollbarModel->getViewStartPosition()); |
|
921 |
|
922 setPositionAndSize(mData->mThumbLayout, |
|
923 ThumblayoutRect.Rect().iTl.iX, |
|
924 mLCTData->top, |
|
925 ThumblayoutRect.Rect().Size().iWidth, |
|
926 mLCTData->height); |
|
927 // Setting position and size for extended thumb layout |
|
928 setPositionAndSize(mData->mExtendedThumbLayout , |
|
929 mData->mExtendedTouch , |
|
930 0, |
|
931 mData->mExtendedTouch, |
|
932 mLCTData->height); |
|
933 |
|
934 if(mData->mThumbTopImage && |
|
935 mData->mThumbMiddleImage && |
|
936 mData->mThumbEndImage) |
|
937 { |
|
938 // parent rect for thumb images |
|
939 TRect ThumbRect(0, |
|
940 0, |
|
941 mData->mThumbLayout->Size().iX.ValueNow(), |
|
942 mData->mThumbLayout->Size().iY.ValueNow()); |
|
943 |
|
944 TAknWindowLineLayout ThumbTopHandle = |
|
945 AknLayoutScalable_UiAccel::hc_scroll_handle_pane_g1(0).LayoutLine(); |
|
946 setLCTData(ThumbRect,ThumbTopHandle,mData->mThumbTopImage); |
|
947 |
|
948 TAknWindowLineLayout ThumbMiddleHandle = |
|
949 AknLayoutScalable_UiAccel::hc_scroll_handle_pane_g2(0).LayoutLine(); |
|
950 setLCTData(ThumbRect,ThumbMiddleHandle,mData->mThumbMiddleImage); |
|
951 |
|
952 TAknWindowLineLayout ThumbEndHandle = |
|
953 AknLayoutScalable_UiAccel::hc_scroll_handle_pane_g3(0).LayoutLine(); |
|
954 setLCTData(ThumbRect,ThumbEndHandle,mData->mThumbEndImage); |
|
955 } |
|
956 } |
|
957 } |
|
958 } |
|
959 |
|
960 // --------------------------------------------------------------------------- |
|
961 // sets LCT Data (position and size) for the visual |
|
962 // --------------------------------------------------------------------------- |
|
963 // |
|
964 void AlfScrollBarDefaultBaseElement::setLCTData(const TRect& aRect , |
|
965 TAknWindowLineLayout& aWindowLineLayout, |
|
966 CAlfVisual * aVisual) |
|
967 { |
|
968 TAknLayoutRect layoutRect; |
|
969 layoutRect.LayoutRect(aRect, aWindowLineLayout); |
|
970 |
|
971 setPositionAndSize(aVisual,layoutRect.Rect().iTl.iX,layoutRect.Rect().iTl.iY, |
|
972 layoutRect.Rect().Size().iWidth,layoutRect.Rect().Size().iHeight); |
|
973 } |
|
974 |
|
975 // --------------------------------------------------------------------------- |
|
976 // sets position and size for the visual |
|
977 // --------------------------------------------------------------------------- |
|
978 // |
|
979 void AlfScrollBarDefaultBaseElement::setPositionAndSize(CAlfVisual * aVisual, |
|
980 int aXVal,int aYVal, |
|
981 int aWidth,int aHeight) |
|
982 { |
|
983 TAlfRealPoint trackTopPnt(aXVal,aYVal); |
|
984 TAlfRealSize trackTopSize(aWidth,aHeight); |
|
985 aVisual->SetPos(trackTopPnt,0); |
|
986 aVisual->SetSize(trackTopSize,0); |
|
987 } |
|
988 |
|
989 // --------------------------------------------------------------------------- |
|
990 // initializes scrollbar model pointer for further reference |
|
991 // --------------------------------------------------------------------------- |
|
992 // |
|
993 void AlfScrollBarDefaultBaseElement::initializeScrollModel() |
|
994 { |
|
995 // Store the ScrollBar Model Pointer; |
|
996 IAlfWidgetFactory& widgetFactory =AlfWidgetEnvExtension::widgetFactory(control().Env()); |
|
997 AlfScrollBarWidget* wdgt = static_cast<AlfScrollBarWidget*>(widgetFactory.findWidget(control().widget()->widgetName())); |
|
998 //Get model pointer |
|
999 IAlfScrollBarModel* model = static_cast<IAlfScrollBarModel*>(wdgt->model()); |
|
1000 mData->mScrollbarModel = static_cast<AlfScrollBarModel*>(model); |
|
1001 } |
|
1002 |
|
1003 |
|
1004 // --------------------------------------------------------------------------- |
|
1005 // Set images for the track |
|
1006 // --------------------------------------------------------------------------- |
|
1007 // |
|
1008 void AlfScrollBarDefaultBaseElement::setTrackImage() |
|
1009 { |
|
1010 TInt flags = EAlfTextureFlagSkinContent; |
|
1011 flags |= EAlfTextureFlagAutoSize; |
|
1012 |
|
1013 // Create skin Image |
|
1014 TAlfImage trackTopImage(KAknsIIDQsnCpScrollBgTop,TSize(0,0), |
|
1015 EAspectRatioNotPreserved,NULL, |
|
1016 -1,-1,0.f,0.f,1.f,1.f, |
|
1017 (TAlfTextureFlags)flags); |
|
1018 TAlfImage trackMiddleImage(KAknsIIDQsnCpScrollBgMiddle, TSize(0,0), |
|
1019 EAspectRatioNotPreserved, NULL, |
|
1020 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1021 (TAlfTextureFlags)flags); |
|
1022 TAlfImage trackEndImage(KAknsIIDQsnCpScrollBgBottom, TSize(0,0), |
|
1023 EAspectRatioNotPreserved, NULL, |
|
1024 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1025 (TAlfTextureFlags)flags); |
|
1026 TAlfImage trackTopPressedImage(KAknsIIDQsnCpScrollBgTopPressed,TSize(0,0), |
|
1027 EAspectRatioNotPreserved,NULL, |
|
1028 -1,-1,0.f,0.f,1.f,1.f, |
|
1029 (TAlfTextureFlags)flags); |
|
1030 TAlfImage trackMiddlePressedImage(KAknsIIDQsnCpScrollBgMiddlePressed, TSize(0,0), |
|
1031 EAspectRatioNotPreserved, NULL, |
|
1032 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1033 (TAlfTextureFlags)flags); |
|
1034 TAlfImage trackEndPressedImage(KAknsIIDQsnCpScrollBgBottomPressed, TSize(0,0), |
|
1035 EAspectRatioNotPreserved, NULL, |
|
1036 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1037 (TAlfTextureFlags)flags); |
|
1038 |
|
1039 // Set Image on visuals |
|
1040 mData->mTrackTopImage->SetImage(trackTopImage); |
|
1041 mData->mTrackMiddleImage->SetImage(trackMiddleImage); |
|
1042 mData->mTrackEndImage->SetImage(trackEndImage); |
|
1043 mData->mTrackTopImage->SetSecondaryImage(trackTopPressedImage); |
|
1044 mData->mTrackMiddleImage->SetSecondaryImage(trackMiddlePressedImage); |
|
1045 mData->mTrackEndImage->SetSecondaryImage(trackEndPressedImage); |
|
1046 }//End of setImage |
|
1047 |
|
1048 // --------------------------------------------------------------------------- |
|
1049 // Set images for the thumb |
|
1050 // --------------------------------------------------------------------------- |
|
1051 // |
|
1052 void AlfScrollBarDefaultBaseElement::setThumbImage() |
|
1053 { |
|
1054 TInt flags = EAlfTextureFlagSkinContent; |
|
1055 flags |= EAlfTextureFlagAutoSize; |
|
1056 |
|
1057 TAlfImage thumbTopImage(KAknsIIDQsnCpScrollHandleTop,TSize(0,0), |
|
1058 EAspectRatioNotPreserved,NULL, |
|
1059 -1,-1,0.f,0.f,1.f,1.f, |
|
1060 (TAlfTextureFlags)flags); |
|
1061 TAlfImage thumbMiddleImage(KAknsIIDQsnCpScrollHandleMiddle, TSize(0,0), |
|
1062 EAspectRatioNotPreserved, NULL, |
|
1063 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1064 (TAlfTextureFlags)flags); |
|
1065 TAlfImage thumbEndImage(KAknsIIDQsnCpScrollHandleBottom, TSize(0,0), |
|
1066 EAspectRatioNotPreserved, NULL, |
|
1067 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1068 (TAlfTextureFlags)flags); |
|
1069 TAlfImage thumbTopPressedImage(KAknsIIDQsnCpScrollHandleTopPressed,TSize(0,0), |
|
1070 EAspectRatioNotPreserved,NULL, |
|
1071 -1,-1,0.f,0.f,1.f,1.f, |
|
1072 (TAlfTextureFlags)flags); |
|
1073 TAlfImage thumbMiddlePressedImage(KAknsIIDQsnCpScrollHandleMiddlePressed, TSize(0,0), |
|
1074 EAspectRatioNotPreserved, NULL, |
|
1075 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1076 (TAlfTextureFlags)flags); |
|
1077 TAlfImage thumbEndPressedImage(KAknsIIDQsnCpScrollHandleBottomPressed, TSize(0,0), |
|
1078 EAspectRatioNotPreserved, NULL, |
|
1079 -1, -1, 0.f, 0.f, 1.f, 1.f, |
|
1080 (TAlfTextureFlags)flags); |
|
1081 |
|
1082 mData->mThumbTopImage->SetImage(thumbTopImage); |
|
1083 mData->mThumbMiddleImage->SetImage(thumbMiddleImage); |
|
1084 mData->mThumbEndImage->SetImage(thumbEndImage); |
|
1085 mData->mThumbTopImage->SetSecondaryImage(thumbTopPressedImage); |
|
1086 mData->mThumbMiddleImage->SetSecondaryImage(thumbMiddlePressedImage); |
|
1087 mData->mThumbEndImage->SetSecondaryImage(thumbEndPressedImage); |
|
1088 |
|
1089 }//End of setImage |
|
1090 // --------------------------------------------------------------------------- |
|
1091 // change images for the track |
|
1092 // --------------------------------------------------------------------------- |
|
1093 // |
|
1094 void AlfScrollBarDefaultBaseElement::changeTrackImage(bool aPressed) |
|
1095 { |
|
1096 if(aPressed) |
|
1097 { |
|
1098 TAlfTimedValue alpha(1.0, 0.0); |
|
1099 mData->mTrackTopImage->SetSecondaryAlpha(alpha); |
|
1100 mData->mTrackMiddleImage->SetSecondaryAlpha(alpha); |
|
1101 mData->mTrackEndImage->SetSecondaryAlpha(alpha); |
|
1102 } |
|
1103 else |
|
1104 { |
|
1105 TAlfTimedValue alpha(0.0, 0.0); |
|
1106 mData->mTrackTopImage->SetSecondaryAlpha(alpha); |
|
1107 mData->mTrackMiddleImage->SetSecondaryAlpha(alpha); |
|
1108 mData->mTrackEndImage->SetSecondaryAlpha(alpha); |
|
1109 |
|
1110 } |
|
1111 } |
|
1112 // --------------------------------------------------------------------------- |
|
1113 // change images for the thumb |
|
1114 // --------------------------------------------------------------------------- |
|
1115 // |
|
1116 void AlfScrollBarDefaultBaseElement::changeThumbImage(bool aPressed) |
|
1117 { |
|
1118 if(aPressed) |
|
1119 { |
|
1120 TAlfTimedValue alpha(1.0,0.0); |
|
1121 mData->mThumbTopImage->SetSecondaryAlpha(alpha); |
|
1122 mData->mThumbMiddleImage->SetSecondaryAlpha(alpha); |
|
1123 mData->mThumbEndImage->SetSecondaryAlpha(alpha); |
|
1124 } |
|
1125 else |
|
1126 { |
|
1127 TAlfTimedValue alpha(0.0,0.0); |
|
1128 mData->mThumbTopImage->SetSecondaryAlpha(alpha); |
|
1129 mData->mThumbMiddleImage->SetSecondaryAlpha(alpha); |
|
1130 mData->mThumbEndImage->SetSecondaryAlpha(alpha); |
|
1131 } |
|
1132 } |
|
1133 // --------------------------------------------------------------------------- |
|
1134 // calculates Step size and Thumb length |
|
1135 // --------------------------------------------------------------------------- |
|
1136 // |
|
1137 void AlfScrollBarDefaultBaseElement::calculateStepSizeAndThumbLength() |
|
1138 { |
|
1139 int totalLength = mData->mScrollbarModel->getTotalLength(); |
|
1140 int viewLength = mData->mScrollbarModel->getViewLength(); |
|
1141 int viewStartPos = mData->mScrollbarModel->getViewStartPosition(); |
|
1142 |
|
1143 TAlfTimedPoint size = mData->mRootLayout->Size(); |
|
1144 mData->mThumbLength = ((float)viewLength / |
|
1145 (float)totalLength) * size.iY.ValueNow(); |
|
1146 |
|
1147 if(mData->mThumbMinLength != 0) |
|
1148 { |
|
1149 if(mData->mThumbLength<mData->mThumbMinLength) |
|
1150 { |
|
1151 mData->mThumbLength = mData->mThumbMinLength; |
|
1152 } |
|
1153 else if(mData->mThumbLength>mData->mThumbMaxLength) |
|
1154 { |
|
1155 mData->mThumbLength = mData->mThumbMaxLength; |
|
1156 } |
|
1157 else |
|
1158 { |
|
1159 |
|
1160 } |
|
1161 } |
|
1162 else |
|
1163 { |
|
1164 |
|
1165 } |
|
1166 |
|
1167 if(totalLength != viewLength) |
|
1168 { |
|
1169 mData->mStepSize = (size.iY.ValueNow() - mData->mThumbLength) / |
|
1170 (totalLength - viewLength); |
|
1171 } |
|
1172 else |
|
1173 { |
|
1174 mData->mStepSize = 0.0; |
|
1175 } |
|
1176 } |
|
1177 // --------------------------------------------------------------------------- |
|
1178 // set maximum and minimum thumblength value from LCT data |
|
1179 // --------------------------------------------------------------------------- |
|
1180 // |
|
1181 void AlfScrollBarDefaultBaseElement::setThumbMinMaxLength() |
|
1182 { |
|
1183 TAknWindowLineLayout ThumbMinLengthHandle = |
|
1184 AknLayoutScalable_UiAccel:: |
|
1185 aid_size_min_handle_cp002(0).LayoutLine(); |
|
1186 |
|
1187 TAknWindowLineLayout ThumbMaxLengthHandle = |
|
1188 AknLayoutScalable_UiAccel:: |
|
1189 aid_hc_size_max_handle(0).LayoutLine(); |
|
1190 |
|
1191 // Since LCT data corresponding to this is very small (20), |
|
1192 // we are hardcoding the value as 30,this has to be removed |
|
1193 // once if we get the correct LCT data |
|
1194 // mData->mThumbMinLength = 30; |
|
1195 mData->mThumbMinLength = ThumbMinLengthHandle.iH; |
|
1196 mData->mThumbMaxLength = mData->mRootLayout->Size().iY.ValueNow() - |
|
1197 ThumbMaxLengthHandle.ib; |
|
1198 } |
|
1199 |
|
1200 // --------------------------------------------------------------------------- |
|
1201 // createDefaultBaseElement, initializes class member variables |
|
1202 // --------------------------------------------------------------------------- |
|
1203 // |
|
1204 void AlfScrollBarDefaultBaseElement::createDefaultBaseElement() |
|
1205 { |
|
1206 |
|
1207 mData = new (EMM) ScrollBarBaseElementData(); |
|
1208 mData->mOperation = ENop; |
|
1209 mData->mVisual = NULL; |
|
1210 mData->mDragPoint = TPoint(0,0); |
|
1211 mData->mLongTapPos = TPoint(0,0); |
|
1212 mData->mDragStartStep = 0; |
|
1213 mData->mViewLength = 0; |
|
1214 mData->mThumbLength = 0; |
|
1215 mData->mThumbMinLength = 0; |
|
1216 mData->mThumbMaxLength = 0; |
|
1217 mData->mStepSize = 0; |
|
1218 mData->mThumbSizeChanged = false; |
|
1219 mData->mWidgetOpacity = 1.0; |
|
1220 mData->mThumbOpacity = 1.0; |
|
1221 mData->mLongTapStarted = false; |
|
1222 mData->mCurrentState = EReleased; |
|
1223 mData->mTrackLayout = NULL; |
|
1224 mData->mTrackTopImage = NULL ; |
|
1225 mData->mTrackMiddleImage = NULL ; |
|
1226 mData->mTrackEndImage = NULL ; |
|
1227 mData->mThumbLayout = NULL ; |
|
1228 mData->mThumbTopImage = NULL ; |
|
1229 mData->mThumbMiddleImage = NULL ; |
|
1230 mData->mThumbEndImage = NULL ; |
|
1231 mData->mExtendedTouch = 0; |
|
1232 mData->mScrollbarModel = NULL; |
|
1233 mData->mThumbAnimationTime = 0; |
|
1234 |
|
1235 mLCTData = new ( EMM ) ScrollbarThumbLCTData(); |
|
1236 mLCTData->left=0; |
|
1237 mLCTData->top=0; |
|
1238 mLCTData->right=0; |
|
1239 mLCTData->bottom=0; |
|
1240 mLCTData->height=0; |
|
1241 mLCTData->width=0; |
|
1242 |
|
1243 }//End of createDefaultBaseElement |
|
1244 |
|
1245 // --------------------------------------------------------------------------- |
|
1246 // initializeThumbDragData |
|
1247 // |
|
1248 // --------------------------------------------------------------------------- |
|
1249 // |
|
1250 bool AlfScrollBarDefaultBaseElement::initializeThumbDragData( const TPoint& aPointerPos ) |
|
1251 { |
|
1252 if(mData->mVisual ) |
|
1253 { |
|
1254 mData->mOperation = EMoveItem; |
|
1255 mData->mDragPoint = aPointerPos; |
|
1256 mData->mDragStartStep = mData->mScrollbarModel->getViewStartPosition(); |
|
1257 } |
|
1258 else |
|
1259 { |
|
1260 // Do Nothing |
|
1261 } |
|
1262 return ETrue; |
|
1263 } |
|
1264 |
|
1265 |
|
1266 // --------------------------------------------------------------------------- |
|
1267 // stopDrag |
|
1268 // Stop Dragging |
|
1269 // --------------------------------------------------------------------------- |
|
1270 // |
|
1271 bool AlfScrollBarDefaultBaseElement::stopDrag( CAlfVisual* /*aHitVisual*/, |
|
1272 TInt /*aAnimTime*/) |
|
1273 { |
|
1274 TRAPD(err, |
|
1275 control().Display()->Roster().SetPointerEventObservers( |
|
1276 0, |
|
1277 control())); |
|
1278 |
|
1279 if(err == KErrNone) |
|
1280 { |
|
1281 if(mData->mVisual) |
|
1282 { |
|
1283 mData->mVisual = NULL; |
|
1284 } |
|
1285 mData->mOperation = ENop; |
|
1286 return true; |
|
1287 } |
|
1288 return false; |
|
1289 } |
|
1290 |
|
1291 // --------------------------------------------------------------------------- |
|
1292 // changeGraphics |
|
1293 // change the skin image graphics based on the pressedState |
|
1294 // --------------------------------------------------------------------------- |
|
1295 // |
|
1296 void AlfScrollBarDefaultBaseElement::changeGraphics() |
|
1297 { |
|
1298 if(mData->mCurrentState == EReleased) // Normal graphics |
|
1299 { |
|
1300 changeTrackImage(false); |
|
1301 changeThumbImage(false); |
|
1302 } |
|
1303 else if(mData->mCurrentState == EThumbPressed || mData->mCurrentState == ETrackPressed) // Pressed graphics |
|
1304 { |
|
1305 if(mData->mCurrentState == EThumbPressed) |
|
1306 { |
|
1307 // set the index for pressed graphics (thumb and track) |
|
1308 changeTrackImage(true); |
|
1309 changeThumbImage(true); |
|
1310 } |
|
1311 else if (mData->mCurrentState == ETrackPressed) |
|
1312 { |
|
1313 // set the index for pressed graphics (track) |
|
1314 changeTrackImage(true); |
|
1315 } |
|
1316 } |
|
1317 } |
|
1318 |
|
1319 // --------------------------------------------------------------------------- |
|
1320 // isScrollbarTrackVisual |
|
1321 // checks whether the visual is scrollbar track visual or not |
|
1322 // --------------------------------------------------------------------------- |
|
1323 // |
|
1324 bool AlfScrollBarDefaultBaseElement::isScrollbarTrackVisual(CAlfVisual *aVisual) |
|
1325 { |
|
1326 if(aVisual == mData->mExtendedTrackLayout || |
|
1327 aVisual == mData->mTrackTopImage || |
|
1328 aVisual == mData->mTrackMiddleImage || |
|
1329 aVisual == mData->mTrackEndImage) |
|
1330 { |
|
1331 return true; |
|
1332 } |
|
1333 return false; |
|
1334 } |
|
1335 |
|
1336 // --------------------------------------------------------------------------- |
|
1337 // isScrollbarThumbVisual |
|
1338 // checks whether the visual is scrollbar thumb visual or not |
|
1339 // --------------------------------------------------------------------------- |
|
1340 // |
|
1341 bool AlfScrollBarDefaultBaseElement::isScrollbarThumbVisual(CAlfVisual *aVisual) |
|
1342 { |
|
1343 if(aVisual == mData->mExtendedThumbLayout || |
|
1344 aVisual == mData->mThumbTopImage || |
|
1345 aVisual == mData->mThumbMiddleImage || |
|
1346 aVisual == mData->mThumbEndImage) |
|
1347 { |
|
1348 return true; |
|
1349 } |
|
1350 return false; |
|
1351 } |
|
1352 |
|
1353 }//namespace Alf |
|
1354 |
|
1355 //End Of File |