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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 the License "Symbian Foundation 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.symbianfoundation.org/legal/sfl-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: This file implements overlay controls |
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15 * |
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16 */ |
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17 |
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18 #include "OverlayControl.h" |
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19 |
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20 // CONSTS |
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21 const TReal KSolidTransparencyFactor = 2; |
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22 |
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23 |
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24 COverlayControl::COverlayControl( MOverlayControlObserver* aObserver ) |
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25 : iObserver( aObserver ) |
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26 { |
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27 } |
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28 |
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29 COverlayControl::~COverlayControl() |
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30 { |
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31 delete iBitmap; |
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32 delete iMask; |
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33 delete iSolidMask; |
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34 } |
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35 |
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36 COverlayControl* COverlayControl::NewL( CCoeControl* aParent, MOverlayControlObserver* aObserver, |
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37 const TRect& aRect, TInt aBitmapId, TInt aMaskId ) |
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38 { |
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39 COverlayControl* self = new (ELeave) COverlayControl( aObserver ); |
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40 CleanupStack::PushL( self ); |
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41 self->ConstructL( aParent, aRect, aBitmapId, aMaskId ); |
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42 CleanupStack::Pop( self ); |
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43 return self; |
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44 } |
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45 |
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46 void COverlayControl::ConstructL( CCoeControl* aParent, const TRect& aRect, TInt aBitmapId, TInt aMaskId ) |
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47 { |
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48 iSolidMask = new(ELeave) CFbsBitmap(); |
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49 |
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50 CreateWindowL( aParent ); |
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51 |
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52 TFileName iconFileName; |
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53 TFsEmailUiUtility::GetFullIconFileNameL( iconFileName ); |
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54 AknIconUtils::CreateIconL( iBitmap, |
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55 iMask, |
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56 iconFileName, |
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57 aBitmapId, |
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58 aMaskId ); |
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59 |
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60 SetRect( aRect ); |
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61 EnableDragEvents(); |
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62 |
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63 ActivateL(); |
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64 } |
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65 |
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66 void COverlayControl::SetRect( const TRect& aRect ) |
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67 { |
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68 if( iBitmap ) |
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69 { |
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70 AknIconUtils::SetSize( iBitmap, aRect.Size() ); |
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71 } |
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72 if( iMask ) |
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73 { |
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74 AknIconUtils::SetSize( iMask, aRect.Size() ); |
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75 |
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76 // Create a solid version of the mask, too |
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77 TRAP_IGNORE( |
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78 CopyBitmapL( *iMask, *iSolidMask ); |
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79 AdjustAlpha( *iSolidMask, KSolidTransparencyFactor ); |
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80 ); |
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81 |
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82 UpdateMask(); |
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83 } |
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84 CCoeControl::SetRect( aRect ); |
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85 } |
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86 |
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87 void COverlayControl::CopyBitmapL( const CFbsBitmap& aSource, CFbsBitmap& aDest ) |
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88 { |
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89 TSize size = aSource.SizeInPixels(); |
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90 TInt dataSize = aSource.DataStride() * size.iHeight; |
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91 User::LeaveIfError( aDest.Create( size, aSource.DisplayMode() ) ); |
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92 |
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93 CFbsBitGc* bitCtx; |
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94 CFbsBitmapDevice* bitDev = CFbsBitmapDevice::NewL( &aDest ); |
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95 CleanupStack::PushL( bitDev ); |
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96 User::LeaveIfError( bitDev->CreateContext( bitCtx ) ); |
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97 CleanupStack::PushL( bitCtx ); |
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98 bitCtx->BitBlt( TRect( size ).iTl, &aSource ); |
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99 CleanupStack::PopAndDestroy( 2 ); // bitCtx, bitDev |
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100 } |
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101 |
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102 void COverlayControl::AdjustAlpha( CFbsBitmap& aBitmap, TReal aFactor ) |
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103 { |
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104 aBitmap.LockHeap(); |
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105 TUint8* data = (TUint8*)aBitmap.DataAddress(); |
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106 TSize size = aBitmap.SizeInPixels(); |
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107 TInt dataSize = aBitmap.DataStride() * size.iHeight; |
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108 for( TInt i = 0; i<dataSize; i++ ) |
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109 { |
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110 // multiply each pixel by aFactor |
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111 if( data[i] ) |
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112 { |
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113 TInt value = aFactor * data[ i ]; |
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114 if( value > KMaxTUint8 ) |
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115 { |
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116 value = KMaxTUint8; |
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117 } |
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118 data[ i ] = value; |
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119 } |
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120 } |
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121 aBitmap.UnlockHeap(); |
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122 } |
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123 |
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124 void COverlayControl::HandlePointerEventL( const TPointerEvent& aPointerEvent ) |
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125 { |
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126 CCoeControl::HandlePointerEventL( aPointerEvent ); |
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127 |
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128 // Do hit test for the pointer event |
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129 TBool hit = EFalse; |
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130 |
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131 TSize size = Size(); |
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132 if( aPointerEvent.iPosition.iX >= 0 && |
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133 aPointerEvent.iPosition.iY >= 0 && |
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134 aPointerEvent.iPosition.iX < size.iWidth && |
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135 aPointerEvent.iPosition.iY < size.iHeight ) |
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136 { |
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137 hit = ETrue; |
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138 } |
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139 |
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140 if( aPointerEvent.iType == TPointerEvent::EButton1Up ) |
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141 { |
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142 SetPointerCapture( EFalse ); |
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143 UpdateButtonState( EFalse ); |
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144 |
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145 // Notify the events only if released on top of the control |
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146 if( iObserver && hit ) |
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147 { |
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148 // Do not let leaves disturb the system |
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149 TRAP_IGNORE( |
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150 iObserver->HandleOverlayPointerEventL( this, aPointerEvent ); |
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151 ); |
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152 } |
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153 } |
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154 else if( aPointerEvent.iType == TPointerEvent::EButton1Down ) |
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155 { |
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156 UpdateButtonState( ETrue ); |
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157 SetGloballyCapturing( ETrue ); |
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158 SetPointerCapture( ETrue ); |
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159 } |
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160 else if( aPointerEvent.iType == TPointerEvent::EDrag ) |
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161 { |
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162 // Update the button UI according to hit result |
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163 UpdateButtonState( hit ); |
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164 } |
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165 } |
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166 |
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167 void COverlayControl::UpdateButtonState( TBool aButtonDown ) |
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168 { |
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169 if( iDownState != aButtonDown ) |
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170 { |
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171 iDownState = aButtonDown; |
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172 UpdateMask(); |
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173 } |
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174 } |
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175 |
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176 void COverlayControl::MakeVisible( TBool aVisible ) |
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177 { |
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178 if( !aVisible ) |
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179 { |
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180 UpdateButtonState( EFalse ); |
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181 SetPointerCapture( EFalse ); |
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182 } |
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183 CCoeControl::MakeVisible( aVisible ); |
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184 } |
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185 |
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186 void COverlayControl::UpdateMask() |
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187 { |
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188 CFbsBitmap* mask = iMask; |
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189 if( iDownState ) |
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190 { |
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191 mask = iSolidMask; |
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192 } |
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193 if( mask ) |
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194 { |
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195 Window().SetTransparencyBitmap( *mask ); |
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196 } |
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197 } |
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198 |
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199 void COverlayControl::Draw( const TRect& ) const |
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200 { |
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201 CWindowGc& gc = SystemGc(); |
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202 |
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203 if( iBitmap ) |
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204 { |
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205 TSize size = iBitmap->SizeInPixels(); |
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206 gc.BitBlt( TPoint( 0, 0 ), iBitmap ); |
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207 } |
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208 } |