1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "HgScrollbar.h" |
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20 #include <ganes/HgScrollbarObserverIface.h> |
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21 #include "HgConstants.h" |
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22 |
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23 #include <AknsUtils.h> |
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24 #include <AknUtils.h> |
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25 #include <AknsDrawUtils.h> |
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26 |
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27 #include <layoutmetadata.cdl.h> |
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28 #include <aknlayoutscalable_avkon.cdl.h> |
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29 #include <aknlayoutscalable_apps.cdl.h> |
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30 |
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31 #include <bitstd.h> |
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32 #include <gulicon.h> |
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33 |
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34 #include <AknIconUtils.h> |
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35 #include <AknsUtils.h> |
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36 #include <AknsConstants.h> |
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37 #include <w32std.h> |
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38 |
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39 // ----------------------------------------------------------------------------- |
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40 // CHgScrollbar::NewL() |
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41 // ----------------------------------------------------------------------------- |
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42 // |
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43 CHgScrollbar* CHgScrollbar::NewL( MHgScrollbarObserver& aObserver ) |
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44 { |
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45 CHgScrollbar* self = new (ELeave) CHgScrollbar( aObserver ); |
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46 CleanupStack::PushL( self ); |
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47 self->ConstructL(); |
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48 CleanupStack::Pop( self ); |
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49 return self; |
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50 } |
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51 |
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52 // ----------------------------------------------------------------------------- |
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53 // CHgScrollbar::~CHgScrollbar() |
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54 // ----------------------------------------------------------------------------- |
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55 // |
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56 CHgScrollbar::~CHgScrollbar() |
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57 { |
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58 delete iScrollbarBg; |
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59 delete iScrollbarHandle; |
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60 delete iScrollbarHandleBg; |
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61 delete iScrollbarBgSelected; |
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62 delete iScrollbarHandleSelected; |
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63 } |
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64 |
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65 // ----------------------------------------------------------------------------- |
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66 // CHgScrollbar::CHgScrollbar() |
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67 // ----------------------------------------------------------------------------- |
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68 // |
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69 CHgScrollbar::CHgScrollbar( MHgScrollbarObserver& aObserver ) |
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70 : iObserver( aObserver ) |
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71 { |
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72 |
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73 } |
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74 |
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75 // ----------------------------------------------------------------------------- |
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76 // CHgScrollbar::ConstructL() |
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77 // ----------------------------------------------------------------------------- |
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78 // |
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79 void CHgScrollbar::ConstructL() |
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80 { |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // CHgScrollbar::SetScrollbarL() |
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85 // ----------------------------------------------------------------------------- |
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86 // |
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87 void CHgScrollbar::InitScrollBarL( |
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88 TRect aRect, |
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89 TSize aTotalSize, |
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90 TSize aViewSize, |
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91 TBool aLandscapeScrolling ) |
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92 { |
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93 if( iTotalSize == aTotalSize |
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94 && iViewSize == aViewSize |
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95 && iLandscapeScrolling == aLandscapeScrolling ) |
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96 { |
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97 return; |
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98 } |
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99 |
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100 TInt variety = aLandscapeScrolling ? 1 : 0; |
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101 |
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102 TAknLayoutRect layout; |
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103 layout.LayoutRect(aRect, AknLayoutScalable_Avkon::scroll_pane( variety )); |
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104 iScrollbarRect = layout.Rect(); |
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105 |
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106 if((aTotalSize.iHeight <= aViewSize.iHeight && !aLandscapeScrolling) |
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107 || (aTotalSize.iWidth <= aViewSize.iWidth && aLandscapeScrolling) ) |
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108 { |
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109 iTotalSize = aViewSize; |
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110 iStatic = ETrue; |
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111 } |
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112 else |
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113 { |
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114 iTotalSize = aTotalSize; |
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115 iStatic = EFalse; |
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116 } |
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117 |
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118 TBool viewChanged = iViewSize != aViewSize; |
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119 |
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120 iViewSize = aViewSize; |
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121 iLandscapeScrolling = aLandscapeScrolling; |
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122 iHandlePosition.SetXY(0,0); |
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123 |
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124 if(iLandscapeScrolling) |
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125 { |
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126 iTotalLength = iTotalSize.iWidth - iViewSize.iWidth; |
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127 } |
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128 else |
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129 { |
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130 iTotalLength = iTotalSize.iHeight - iViewSize.iHeight; |
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131 } |
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132 |
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133 InitIconsL( viewChanged ); |
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134 } |
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135 |
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136 // ----------------------------------------------------------------------------- |
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137 // CHgScrollbar::SetViewPosition() |
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138 // ----------------------------------------------------------------------------- |
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139 // |
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140 void CHgScrollbar::SetViewPosition( TPoint aPosition ) |
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141 { |
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142 if(!iStatic) |
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143 { |
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144 if(iLandscapeScrolling) |
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145 { |
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146 if (AknLayoutUtils::LayoutMirrored()) |
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147 { |
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148 iHandlePosition.iX = (iScrollLength) * (1.0 - aPosition.iX / TReal(iTotalLength)); |
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149 } |
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150 else |
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151 { |
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152 iHandlePosition.iX = (iScrollLength) * (aPosition.iX / TReal(iTotalLength)); |
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153 } |
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154 } |
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155 else |
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156 { |
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157 iHandlePosition.iY = (iScrollLength) * (aPosition.iY / TReal(iTotalLength)); |
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158 } |
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159 CheckHandlePosition( EFalse ); |
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160 } |
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161 } |
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162 |
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163 // ----------------------------------------------------------------------------- |
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164 // CHgScrollbar::HandlePointerEventL() |
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165 // ----------------------------------------------------------------------------- |
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166 // |
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167 TBool CHgScrollbar::HandlePointerEventL( const TPointerEvent& aEvent ) |
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168 { |
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169 return HandleScrollBarPointerEvent( aEvent ); |
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170 } |
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171 |
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172 // ----------------------------------------------------------------------------- |
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173 // CHgScrollbar::HandleScrollBarPointerEvent() |
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174 // ----------------------------------------------------------------------------- |
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175 // |
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176 TBool CHgScrollbar::HandleScrollBarPointerEvent( const TPointerEvent& aEvent ) |
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177 { |
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178 TBool ret = EFalse; |
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179 // Quick and dirty hack, remove when logic for fetching the correct drag rect is available |
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180 TRect dragArea( iScrollbarRect ); |
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181 dragArea.iBr.iX += KScrollAreaOffset; |
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182 dragArea.iTl.iX -= KScrollAreaOffset; |
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183 |
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184 // Start drag |
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185 if( aEvent.iType == TPointerEvent::EButton1Down && dragArea.Contains(aEvent.iPosition)) |
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186 { |
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187 TSize size(iHandleSize); |
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188 size.iWidth += KScrollAreaOffset*2; |
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189 TRect handleRect( dragArea.iTl + iHandlePosition, size ); |
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190 iDragging = handleRect.Contains( aEvent.iPosition ); |
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191 iPrevDrag = aEvent.iPosition; |
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192 iHandler = ret = ETrue; |
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193 CheckHandlePosition( !iStatic ); |
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194 } |
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195 |
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196 // Drag |
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197 if( aEvent.iType == TPointerEvent::EDrag && iHandler) |
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198 { |
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199 if( iDragging ) |
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200 { |
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201 if(iLandscapeScrolling) |
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202 { |
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203 iHandlePosition.iX -= iPrevDrag.iX - aEvent.iPosition.iX; |
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204 } |
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205 else |
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206 { |
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207 iHandlePosition.iY -= iPrevDrag.iY - aEvent.iPosition.iY; |
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208 } |
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209 CheckHandlePosition( !iStatic ); |
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210 |
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211 iPrevDrag = aEvent.iPosition; |
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212 } |
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213 ret = ETrue; |
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214 } |
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215 |
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216 // End drag |
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217 if( aEvent.iType == TPointerEvent::EButton1Up && iHandler) |
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218 { |
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219 if(!iDragging) |
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220 { |
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221 TBool below = iLandscapeScrolling ? |
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222 aEvent.iPosition.iX > iHandlePosition.iX |
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223 : aEvent.iPosition.iY > iHandlePosition.iY; |
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224 iHandlePosition += below ? iHandleSize.AsPoint() : -iHandleSize.AsPoint(); |
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225 } |
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226 CheckHandlePosition( !iStatic ); |
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227 iHandler = iDragging = EFalse; |
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228 ret = ETrue; |
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229 } |
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230 |
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231 return ret; |
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232 } |
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233 |
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234 |
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235 // ----------------------------------------------------------------------------- |
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236 // CHgScrollbar::Draw() |
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237 // ----------------------------------------------------------------------------- |
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238 // |
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239 void CHgScrollbar::Draw( CWindowGc& aGc ) |
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240 { |
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241 DrawScrollbar( aGc ); |
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242 } |
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243 |
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244 // ----------------------------------------------------------------------------- |
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245 // CHgScrollbar::DrawScrollbar() |
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246 // ----------------------------------------------------------------------------- |
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247 // |
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248 void CHgScrollbar::DrawScrollbar( CWindowGc& aGc ) |
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249 { |
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250 if(iScrollbarBg && iScrollbarHandle && iScrollbarHandleBg) |
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251 { |
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252 if(iHandler && !iStatic) |
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253 { |
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254 aGc.BitBltMasked(iScrollbarRect.iTl, |
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255 iScrollbarHandleBg->Bitmap(), |
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256 iScrollbarHandleBg->Bitmap()->SizeInPixels(), |
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257 iScrollbarHandleBg->Mask(), |
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258 EFalse); |
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259 |
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260 aGc.BitBltMasked(iScrollbarRect.iTl + iHandlePosition, |
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261 iScrollbarHandleSelected->Bitmap(), |
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262 iScrollbarHandleSelected->Bitmap()->SizeInPixels(), |
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263 iScrollbarHandleSelected->Mask(), |
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264 EFalse); |
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265 } |
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266 else |
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267 { |
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268 aGc.BitBltMasked(iScrollbarRect.iTl, |
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269 iScrollbarBg->Bitmap(), |
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270 iScrollbarBg->Bitmap()->SizeInPixels(), |
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271 iScrollbarBg->Mask(), |
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272 EFalse); |
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273 |
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274 aGc.BitBltMasked(iScrollbarRect.iTl + iHandlePosition, |
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275 iScrollbarHandle->Bitmap(), |
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276 iScrollbarHandle->Bitmap()->SizeInPixels(), |
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277 iScrollbarHandle->Mask(), |
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278 EFalse); |
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279 } |
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280 } |
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281 } |
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282 |
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283 // ----------------------------------------------------------------------------- |
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284 // CHgScrollbar::CheckHandlePosition() |
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285 // ----------------------------------------------------------------------------- |
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286 // |
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287 void CHgScrollbar::CheckHandlePosition( TBool aReportChange ) |
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288 { |
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289 |
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290 if(iLandscapeScrolling) |
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291 { |
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292 iHandlePosition.iY = 0; |
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293 if(iHandlePosition.iX < 0 ) |
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294 iHandlePosition.iX = 0; |
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295 if(iHandlePosition.iX > iScrollLength) |
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296 iHandlePosition.iX = iScrollLength; |
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297 } |
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298 else |
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299 { |
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300 iHandlePosition.iX = 0; |
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301 if(iHandlePosition.iY < 0 ) |
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302 iHandlePosition.iY = 0; |
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303 if(iHandlePosition.iY > iScrollLength) |
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304 iHandlePosition.iY = iScrollLength; |
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305 } |
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306 if( aReportChange ) |
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307 { |
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308 TPoint pos (iViewSize.iWidth/2, iViewSize.iHeight/2); |
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309 if(iLandscapeScrolling) |
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310 { |
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311 if (AknLayoutUtils::LayoutMirrored()) |
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312 { |
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313 pos.iX += (1.0 - iHandlePosition.iX / TReal(iScrollLength)) * (iTotalLength); |
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314 } |
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315 else |
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316 { |
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317 pos.iX += (iHandlePosition.iX / TReal(iScrollLength)) * (iTotalLength); |
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318 } |
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319 } |
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320 else |
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321 { |
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322 pos.iY += (iHandlePosition.iY / TReal(iScrollLength)) * (iTotalLength); |
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323 } |
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324 |
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325 iObserver.ScrollBarPositionChanged( pos ); |
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326 } |
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327 } |
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328 |
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329 // ----------------------------------------------------------------------------- |
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330 // CHgScrollbar::InitIconsL() |
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331 // ----------------------------------------------------------------------------- |
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332 // |
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333 void CHgScrollbar::InitIconsL( TBool aInitBgIcons ) |
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334 { |
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335 if(aInitBgIcons) |
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336 { |
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337 delete iScrollbarBg; iScrollbarBg = NULL; |
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338 delete iScrollbarBgSelected; iScrollbarBgSelected = NULL; |
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339 delete iScrollbarHandleBg; iScrollbarHandleBg = NULL; |
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340 |
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341 CreateIconL(iScrollbarBg, iScrollbarRect.Size()); |
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342 CreateIconL(iScrollbarBgSelected, iScrollbarRect.Size()); |
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343 CreateIconL(iScrollbarHandleBg, iScrollbarRect.Size()); |
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344 } |
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345 |
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346 TReal xFactor = iScrollbarRect.Width()/TReal(iTotalSize.iWidth); |
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347 TReal yFactor = iScrollbarRect.Height()/TReal(iTotalSize.iHeight); |
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348 |
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349 iHandleSize = TSize ( iViewSize.iWidth * xFactor, iViewSize.iHeight * yFactor ); |
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350 |
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351 if(iLandscapeScrolling) |
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352 { |
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353 TInt min = 2*iHandleSize.iHeight; |
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354 if( iHandleSize.iWidth < min ) |
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355 { |
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356 iHandleSize.iWidth = min; |
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357 } |
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358 iScrollLength = iScrollbarRect.Width() - iHandleSize.iWidth; |
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359 } |
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360 else |
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361 { |
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362 TInt min = 2*iHandleSize.iWidth; |
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363 if( iHandleSize.iHeight < min ) |
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364 { |
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365 iHandleSize.iHeight = min; |
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366 } |
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367 iScrollLength = iScrollbarRect.Height() - iHandleSize.iHeight; |
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368 } |
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369 |
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370 delete iScrollbarHandle; iScrollbarHandle = NULL; |
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371 delete iScrollbarHandleSelected; iScrollbarHandleSelected = NULL; |
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372 |
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373 CreateIconL(iScrollbarHandle, iHandleSize ); |
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374 CreateIconL(iScrollbarHandleSelected, iHandleSize ); |
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375 |
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376 if( iLandscapeScrolling ) |
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377 { |
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378 if( aInitBgIcons ) |
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379 { |
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380 DrawIconL( *iScrollbarBg, |
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381 KAknsIIDQsnCpScrollHorizontalBgTop, |
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382 KAknsIIDQsnCpScrollHorizontalBgMiddle, |
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383 KAknsIIDQsnCpScrollHorizontalBgBottom ); |
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384 |
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385 // TODO, check if this is needed. |
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386 // DrawIconL( *iScrollbarHandleBg, |
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387 // KAknsIIDQsnCpScrollHorizontalHandleBgTop, |
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388 // KAknsIIDQsnCpScrollHorizontalHandleBgMiddle, |
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389 // KAknsIIDQsnCpScrollHorizontalHandleBgBottom ); |
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390 |
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391 DrawIconL( *iScrollbarBgSelected, |
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392 KAknsIIDQsnCpScrollHorizontalBgTopPressed, |
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393 KAknsIIDQsnCpScrollHorizontalBgMiddlePressed, |
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394 KAknsIIDQsnCpScrollHorizontalBgBottomPressed ); |
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395 } |
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396 |
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397 DrawIconL( *iScrollbarHandle, |
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398 KAknsIIDQsnCpScrollHorizontalHandleTop, |
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399 KAknsIIDQsnCpScrollHorizontalHandleMiddle, |
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400 KAknsIIDQsnCpScrollHorizontalHandleBottom); |
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401 |
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402 DrawIconL( *iScrollbarHandleSelected, |
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403 KAknsIIDQsnCpScrollHorizontalHandleTopPressed, |
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404 KAknsIIDQsnCpScrollHorizontalHandleMiddlePressed, |
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405 KAknsIIDQsnCpScrollHorizontalHandleBottomPressed ); |
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406 } |
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407 else |
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408 { |
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409 if(aInitBgIcons) |
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410 { |
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411 DrawIconL( *iScrollbarBg, |
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412 KAknsIIDQsnCpScrollBgTop, |
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413 KAknsIIDQsnCpScrollBgMiddle, |
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414 KAknsIIDQsnCpScrollBgBottom ); |
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415 |
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416 DrawIconL( *iScrollbarHandleBg, |
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417 KAknsIIDQsnCpScrollHandleBgTop, |
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418 KAknsIIDQsnCpScrollHandleBgMiddle, |
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419 KAknsIIDQsnCpScrollHandleBgBottom ); |
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420 |
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421 DrawIconL( *iScrollbarBgSelected, |
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422 KAknsIIDQsnCpScrollBgTopPressed, |
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423 KAknsIIDQsnCpScrollBgMiddlePressed, |
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424 KAknsIIDQsnCpScrollBgBottomPressed ); |
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425 } |
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426 |
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427 DrawIconL( *iScrollbarHandle, |
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428 KAknsIIDQsnCpScrollHandleTop, |
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429 KAknsIIDQsnCpScrollHandleMiddle, |
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430 KAknsIIDQsnCpScrollHandleBottom); |
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431 |
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432 DrawIconL( *iScrollbarHandleSelected, |
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433 KAknsIIDQsnCpScrollHandleTopPressed, |
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434 KAknsIIDQsnCpScrollHandleMiddlePressed, |
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435 KAknsIIDQsnCpScrollHandleBottomPressed ); |
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436 } |
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437 } |
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438 |
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439 // ----------------------------------------------------------------------------- |
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440 // CHgScrollbar::CreateIconL() |
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441 // ----------------------------------------------------------------------------- |
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442 // |
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443 void CHgScrollbar::CreateIconL( CGulIcon*& aIcon, TSize aSize) |
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444 { |
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445 CFbsBitmap* bmap = new (ELeave) CFbsBitmap; |
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446 CleanupStack::PushL( bmap ); |
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447 User::LeaveIfError( bmap->Create( aSize , EColor64K)); |
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448 |
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449 CFbsBitmap* mask = new (ELeave) CFbsBitmap; |
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450 CleanupStack::PushL( mask ); |
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451 User::LeaveIfError( mask->Create( aSize , EGray256)); |
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452 |
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453 aIcon = CGulIcon::NewL( bmap, mask ); |
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454 |
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455 CleanupStack::Pop(2, bmap); |
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456 } |
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457 |
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458 // ----------------------------------------------------------------------------- |
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459 // CHgScrollbar::DrawIconL() |
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460 // ----------------------------------------------------------------------------- |
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461 // |
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462 void CHgScrollbar::DrawIconL( CGulIcon& aIcon, |
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463 const TAknsItemID& aTop, |
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464 const TAknsItemID& aMiddle, |
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465 const TAknsItemID& aBottom ) |
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466 { |
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467 TRect rect; |
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468 TSize iconSize(aIcon.Bitmap()->SizeInPixels()); |
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469 TSize tSize; |
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470 TPoint point(0,0); |
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471 if(iLandscapeScrolling) |
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472 { |
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473 tSize.SetSize(iconSize.iHeight, iconSize.iHeight); |
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474 } |
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475 else |
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476 { |
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477 tSize.SetSize(iconSize.iWidth, iconSize.iWidth); |
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478 } |
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479 |
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480 // TOP |
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481 rect.SetRect(point, tSize); |
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482 DrawBitmapL( aIcon, aTop, rect ); |
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483 |
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484 // MIDDLE |
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485 TSize middlesize(iconSize); |
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486 if(iLandscapeScrolling) |
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487 { |
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488 point.iX = tSize.iWidth; |
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489 middlesize.iWidth -= 2*tSize.iWidth; |
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490 } |
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491 else |
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492 { |
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493 point.iY = tSize.iHeight; |
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494 middlesize.iHeight -= 2*tSize.iHeight; |
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495 } |
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496 rect.SetRect(point, middlesize); |
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497 DrawBitmapL( aIcon, aMiddle, rect); |
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498 |
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499 // BOTTOM |
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500 point = iconSize.AsPoint()-tSize; |
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501 rect.SetRect(point, tSize); |
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502 DrawBitmapL( aIcon, aBottom, rect ); |
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503 } |
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504 |
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505 // ----------------------------------------------------------------------------- |
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506 // CHgScrollbar::DrawBitmapL() |
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507 // ----------------------------------------------------------------------------- |
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508 // |
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509 void CHgScrollbar::DrawBitmapL( CGulIcon& aIcon, |
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510 const TAknsItemID& aItem, |
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511 const TRect& aDestRect ) |
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512 { |
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513 CFbsBitmap* bitmap = NULL; |
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514 CFbsBitmap* mask = NULL; |
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515 TRAP_IGNORE( AknsUtils::CreateIconL(AknsUtils::SkinInstance(), aItem, bitmap, mask, KNullDesC, -1, -1); ) |
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516 |
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517 if(!bitmap) |
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518 { |
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519 AknsUtils::CreateIconL(AknsUtils::SkinInstance(), aItem, bitmap, KNullDesC, -1); |
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520 } |
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521 |
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522 AknIconUtils::SetSize(bitmap, aDestRect.Size(), EAspectRatioNotPreserved); |
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523 ScaleBitmapL(aDestRect, aIcon.Bitmap(), bitmap); |
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524 |
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525 if(mask) |
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526 { |
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527 AknIconUtils::SetSize(mask, aDestRect.Size(), EAspectRatioNotPreserved); |
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528 ScaleBitmapL(aDestRect, aIcon.Mask(), mask); |
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529 } |
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530 |
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531 delete bitmap; bitmap = NULL; |
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532 delete mask; mask = NULL; |
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533 } |
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534 |
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535 |
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536 // ----------------------------------------------------------------------------- |
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537 // CHgScrollbar::ScaleBitmapL() |
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538 // ----------------------------------------------------------------------------- |
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539 // |
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540 void CHgScrollbar::ScaleBitmapL( const TRect& aDestRect, |
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541 CFbsBitmap* aDest, |
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542 const CFbsBitmap* aSrc) |
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543 { |
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544 CFbsBitmapDevice* device = CFbsBitmapDevice::NewL(aDest); |
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545 CleanupStack::PushL(device); |
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546 |
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547 CFbsBitGc* gc = NULL; |
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548 User::LeaveIfError(device->CreateContext(gc)); |
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549 CleanupStack::PushL(gc); |
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550 |
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551 gc->DrawBitmap(aDestRect, aSrc); |
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552 |
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553 CleanupStack::PopAndDestroy(2, device); |
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554 } |
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555 |
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556 // ----------------------------------------------------------------------------- |
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557 // CHgScrollbar::ScrollbarBg() |
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558 // ----------------------------------------------------------------------------- |
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559 // |
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560 const CGulIcon* CHgScrollbar::ScrollbarBg() const |
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561 { |
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562 return iScrollbarBg; |
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563 } |
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564 |
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565 |
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566 const CGulIcon* CHgScrollbar::ScrollbarHandleBg() const |
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567 { |
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568 return iScrollbarHandleBg; |
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569 } |
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570 |
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571 const CGulIcon* CHgScrollbar::ScrollbarHandle() const |
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572 { |
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573 return iScrollbarHandle; |
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574 } |
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575 |
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576 const CGulIcon* CHgScrollbar::ScrollbarBgSelected() const |
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577 { |
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578 return iScrollbarBgSelected; |
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579 } |
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580 |
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581 const CGulIcon* CHgScrollbar::ScrollbarHandleSelected() const |
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582 { |
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583 return iScrollbarHandleSelected; |
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584 } |
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585 |
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586 const TRect& CHgScrollbar::ScrollbarRect() const |
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587 { |
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588 return iScrollbarRect; |
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589 } |
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590 |
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591 const TPoint& CHgScrollbar::HandlePosition() const |
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592 { |
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593 return iHandlePosition; |
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594 } |
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595 |
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596 TBool CHgScrollbar::IsStatic() const |
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597 { |
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598 return iStatic; |
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599 } |
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600 |
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601 TBool CHgScrollbar::IsDragging() const |
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602 { |
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603 return iDragging; |
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604 } |
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605 |
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606 TBool CHgScrollbar::Handler() const |
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607 { |
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608 return iHandler; |
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609 } |
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610 |
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611 void CHgScrollbar::Reset() |
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612 { |
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613 iHandler = iDragging = EFalse; |
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614 } |
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615 |
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616 // End of file |
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