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1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include "SCDRAW.H" |
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17 #include "_WININC.H" |
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18 |
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19 TInt CDrawFourBppScreenBitmapGray::InitScreen() |
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20 { |
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21 TRect drawRect; |
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22 GetDrawRect(drawRect); |
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23 RWindows* window = ::WindowHandler(iScreenNo); |
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24 window->iDisplayMode = DisplayMode(); |
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25 window->iEpocBitmapSize = drawRect.Size(); |
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26 window->iEpocBitmapLinePitch = (iScanLineWords*4); |
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27 |
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28 return KErrNone; |
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29 } |
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30 |
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31 void CDrawFourBppScreenBitmapGray::OrientationsAvailable(TBool aOrientation[4]) |
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32 { |
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33 aOrientation[EOrientationNormal] = ETrue; |
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34 aOrientation[EOrientationRotated90] = EFalse; |
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35 aOrientation[EOrientationRotated180] = EFalse; |
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36 aOrientation[EOrientationRotated270] = EFalse; |
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37 } |
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38 |
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39 void CDrawFourBppScreenBitmapGray::UpdateRect(const TRect& aRect) const |
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40 { |
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41 ASSERT(aRect.iTl.iX >= 0 && aRect.iTl.iY >= 0); |
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42 ASSERT(aRect.iBr.iX <= iSize.iWidth); |
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43 ASSERT(aRect.iBr.iY <= iSize.iHeight); |
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44 |
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45 TInt lx = aRect.iTl.iX & ~7; |
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46 TInt rx = (aRect.iBr.iX + 7) & ~7; |
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47 TInt wordwidth = (rx - lx) >> 3; |
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48 |
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49 for (TInt row = aRect.iTl.iY; row < aRect.iBr.iY; row++) |
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50 { |
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51 TUint8* destPixel = WinPixelAddress(lx,row); |
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52 TInt wordx = lx; |
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53 |
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54 for(TInt word = 0; word < wordwidth; word++) |
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55 { |
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56 TUint32 data; |
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57 ReadLine(wordx,row,8,&data); |
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58 |
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59 TUint8 grayIndex = TUint8((data & 0xf) * 17); |
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60 destPixel[0] = grayIndex; |
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61 destPixel[1] = grayIndex; |
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62 destPixel[2] = grayIndex; |
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63 grayIndex = TUint8(((data >> 4) & 0xf) * 17); |
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64 destPixel[3] = grayIndex; |
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65 destPixel[4] = grayIndex; |
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66 destPixel[5] = grayIndex; |
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67 grayIndex = TUint8(((data >> 8) & 0xf) * 17); |
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68 destPixel[6] = grayIndex; |
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69 destPixel[7] = grayIndex; |
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70 destPixel[8] = grayIndex; |
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71 grayIndex = TUint8(((data >> 12) & 0xf) * 17); |
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72 destPixel[9] = grayIndex; |
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73 destPixel[10] = grayIndex; |
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74 destPixel[11] = grayIndex; |
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75 grayIndex = TUint8(((data >> 16) & 0xf) * 17); |
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76 destPixel[12] = grayIndex; |
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77 destPixel[13] = grayIndex; |
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78 destPixel[14] = grayIndex; |
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79 grayIndex = TUint8(((data >> 20) & 0xf) * 17); |
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80 destPixel[15] = grayIndex; |
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81 destPixel[16] = grayIndex; |
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82 destPixel[17] = grayIndex; |
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83 grayIndex = TUint8(((data >> 24) & 0xf) * 17); |
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84 destPixel[18] = grayIndex; |
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85 destPixel[19] = grayIndex; |
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86 destPixel[20] = grayIndex; |
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87 grayIndex = TUint8(((data >> 28) & 0xf) * 17); |
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88 destPixel[21] = grayIndex; |
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89 destPixel[22] = grayIndex; |
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90 destPixel[23] = grayIndex; |
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91 |
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92 destPixel += 24; |
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93 wordx += 8; |
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94 } |
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95 } |
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96 } |
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97 |