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1 /* |
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2 * Copyright (c) 2007, 2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Control Implementation with utilities for scrollbar widget. |
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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/alfenv.h> |
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20 #include <alf/alfroster.h> |
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21 #include <alf/alfdisplay.h> |
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22 |
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23 // Widget model includes |
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24 #include <alf/alfwidgetevents.h> |
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25 #include <alf/alfcontrolgroup.h> |
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26 |
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27 // Widget includes |
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28 #include <alf/ialfscrollbardefaultbaseelement.h> |
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29 #include "ialfscrollbarbaseelementinternal.h" |
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30 |
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31 // Internal includes |
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32 #include "alfscrollbarcontrol.h" |
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33 #include "alfscrollbarwidget.h" |
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34 |
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35 |
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36 // namespaces |
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37 using namespace osncore; |
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38 using namespace alfscrollbarwidget; |
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39 |
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40 namespace Alf |
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41 { |
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42 |
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43 // --------------------------------------------------------------------------- |
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44 // Constructor. |
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45 // --------------------------------------------------------------------------- |
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46 // |
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47 AlfScrollBarControl::AlfScrollBarControl(CAlfEnv& aEnv) : |
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48 CAlfWidgetControl(aEnv) |
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49 { |
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50 mLayoutHeight = -1; //this means that the first draw is yet to happen. |
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51 mLayoutWidth = -1; //this means that the first draw is yet to happen. |
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52 disableState(IAlfWidgetControl::Focusable); |
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53 mTactilefdbInstance = NULL; |
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54 mDragTactileFeedbackStarted = false; |
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55 mEnableTactile = false; // Next statement will make it true |
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56 EnableTactileFeedback(true); |
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57 } |
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58 |
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59 // --------------------------------------------------------------------------- |
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60 // Destructor. |
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61 // --------------------------------------------------------------------------- |
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62 // |
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63 AlfScrollBarControl::~AlfScrollBarControl() |
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64 { |
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65 } |
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66 |
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67 // --------------------------------------------------------------------------- |
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68 // |
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69 // enableTactileFeedback |
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70 // --------------------------------------------------------------------------- |
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71 // |
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72 void AlfScrollBarControl::EnableTactileFeedback(bool aEnabled) |
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73 { |
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74 if (!mTactilefdbInstance) |
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75 { |
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76 mEnableTactile = aEnabled; |
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77 mTactilefdbInstance = MTouchFeedback::Instance(); |
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78 } |
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79 } |
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80 |
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81 //----------------------------------------------------------------------------- |
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82 // |
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83 // TouchTactileEffectOnTouch |
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84 //----------------------------------------------------------------------------- |
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85 |
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86 void AlfScrollBarControl::TactileEffectOnTouchandHold() |
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87 { |
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88 if (mTactilefdbInstance) |
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89 { |
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90 mTactilefdbInstance->InstantFeedback(ETouchFeedbackSlider); |
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91 } |
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92 } |
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93 |
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94 //------------------------------------------------------------------------------- |
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95 // |
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96 // |
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97 //-------------------------------------------------------------------------------- |
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98 |
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99 void AlfScrollBarControl::TactileEffectOnDrag(TAlfEvent& aEvent) |
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100 { |
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101 if (mTactilefdbInstance) |
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102 { |
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103 CCoeControl* ccoecntrl = static_cast<CCoeControl*>(Display()->ObjectProvider()); |
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104 TInt intensity = 50; |
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105 TTimeIntervalMicroSeconds32 timespan = 400000; |
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106 mTactilefdbInstance->StartFeedback(ccoecntrl,ETouchContinuousSlider,&aEvent.PointerEvent(),intensity,timespan); |
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107 mDragTactileFeedbackStarted = true; |
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108 } |
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109 } |
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110 |
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111 //------------------------------------------------------------------------------- |
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112 // |
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113 // TouchTactileEffectOnRelease |
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114 //-------------------------------------------------------------------------------- |
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115 // |
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116 void AlfScrollBarControl::TactileEffectOnRelease() |
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117 { |
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118 if (mTactilefdbInstance) |
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119 { |
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120 if ( mDragTactileFeedbackStarted ) |
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121 { |
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122 // Touch Release on Thumb after drag |
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123 CCoeControl* ccoecntrl = static_cast<CCoeControl*>(Display()->ObjectProvider()); |
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124 mTactilefdbInstance->StopFeedback(ccoecntrl); |
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125 mDragTactileFeedbackStarted = false; |
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126 } |
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127 else |
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128 { |
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129 // Touch Release on thumb |
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130 mTactilefdbInstance->InstantFeedback(ETouchFeedbackSlider); |
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131 } |
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132 } |
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133 } |
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134 |
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135 // --------------------------------------------------------------------------- |
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136 // |
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137 // getTactileFeedbackState |
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138 // |
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139 // --------------------------------------------------------------------------- |
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140 bool AlfScrollBarControl::IsTactileFeedbackEnabled() |
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141 { |
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142 return mEnableTactile; |
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143 } |
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144 |
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145 // --------------------------------------------------------------------------- |
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146 // From Base class CAlfControl |
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147 // Notifies the owner that the layout of a visual has been recalculated. |
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148 // Called only when the EAlfVisualFlagLayoutUpdateNotification flag has |
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149 // been set for the visual. |
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150 // --------------------------------------------------------------------------- |
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151 // |
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152 void AlfScrollBarControl::VisualLayoutUpdated(CAlfVisual& aVisual) |
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153 { |
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154 if((mLayoutWidth == -1 && roundFloatToInt( |
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155 aVisual.Size().ValueNow().iX) == 0) || |
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156 (mLayoutHeight == -1 && roundFloatToInt( |
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157 aVisual.Size().ValueNow().iY) == 0)) |
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158 { |
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159 return; /*No size assigned yet*/ |
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160 } |
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161 else |
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162 { |
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163 //do nothing |
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164 } |
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165 |
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166 if(mLayoutWidth == roundFloatToInt(aVisual.Size().ValueNow().iX) && |
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167 mLayoutHeight == roundFloatToInt(aVisual.Size().ValueNow().iY)) |
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168 { |
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169 //return; /* No change in layout size */ |
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170 } |
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171 else |
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172 { |
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173 //do nothing |
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174 } |
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175 |
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176 mLayoutWidth = roundFloatToInt(aVisual.Size().ValueNow().iX); |
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177 mLayoutHeight = roundFloatToInt(aVisual.Size().ValueNow().iY); |
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178 IAlfElement* baseelement = findElement ("BaseElement"); |
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179 IAlfScrollBarBaseElementInternal* elementInternal = NULL; |
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180 if(baseelement) |
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181 { |
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182 elementInternal = |
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183 static_cast<IAlfScrollBarBaseElementInternal*> ( |
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184 baseelement->makeInterface(IAlfScrollBarBaseElementInternal::type())); |
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185 } |
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186 else |
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187 { |
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188 // do nothing |
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189 } |
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190 |
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191 if(elementInternal) |
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192 { |
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193 elementInternal->baseLayoutSizeChanged(); |
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194 } |
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195 else |
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196 { |
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197 //do nothing |
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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 // Returns top level layout. |
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203 // --------------------------------------------------------------------------- |
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204 // |
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205 CAlfLayout* AlfScrollBarControl::ContainerLayout( |
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206 const CAlfControl* /*aConnected*/) const |
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207 { |
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208 //Return the root layout of the control |
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209 return(static_cast<CAlfLayout*> (&Visual(0))); |
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210 } |
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211 |
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212 // --------------------------------------------------------------------------- |
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213 // From base class CAlfWidgetControl |
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214 // Handle Alfred events. |
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215 // --------------------------------------------------------------------------- |
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216 // |
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217 AlfEventStatus AlfScrollBarControl::handleEvent( const TAlfEvent& aEvent ) |
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218 { |
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219 IAlfElement *base = findElement("BaseElement"); |
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220 |
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221 if(aEvent.IsCustomEvent()) |
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222 { |
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223 if(aEvent.CustomParameter() == EEventMissedPointerUp) |
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224 { |
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225 if(base) |
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226 { |
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227 IAlfWidgetEventHandler* element = |
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228 static_cast<IAlfWidgetEventHandler*> ( |
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229 base->makeInterface(IAlfWidgetEventHandler::type())); |
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230 if(element) |
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231 { |
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232 element->offerEvent(*this,aEvent); |
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233 } |
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234 |
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235 } |
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236 } |
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237 } |
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238 else if(aEvent.IsPointerEvent()) |
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239 { |
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240 // if the type of base element is scrollbardefaultbaseelement, then |
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241 // convert the event to custom event |
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242 if(base) |
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243 { |
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244 |
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245 if(base->makeInterface( |
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246 IAlfScrollBarDefaultBaseElement::type()) != NULL) |
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247 { |
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248 TAlfEvent customevent(EEventScrollBarClicked,(TInt )&aEvent); |
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249 return CAlfWidgetControl::processEvent(customevent); |
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250 } |
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251 else // other elements (like AlfElement) dont understand custom events |
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252 { // Let them handle the original event in their own way |
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253 return CAlfWidgetControl::handleEvent(aEvent); |
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254 } |
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255 } |
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256 } |
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257 //ScrollBar should not handle any key event |
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258 else |
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259 { |
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260 return EEventNotHandled; |
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261 } |
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262 |
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263 return EEventNotHandled; |
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264 } |
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265 |
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266 }//End of namespace Alf |
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267 //End of File |