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1 // Copyright (c) 2007-2009 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 "swdirectgdiimagetargetimpl.h" |
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17 #include "swdirectgdidriverimpl.h" |
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18 #include <bitdraw.h> |
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19 |
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20 /** |
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21 Constructs a CSwDirectGdiImageTargetImpl. |
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22 @param aDriver The driver implementation which created this target. |
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23 @param aDrawDevice A pointer to the draw device associated with this target. |
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24 This class takes ownership of aDrawDevice. |
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25 */ |
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26 CSwDirectGdiImageTargetImpl::CSwDirectGdiImageTargetImpl(CSwDirectGdiDriverImpl& aDriver, CFbsDrawDevice* aDrawDevice): |
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27 iDriver(aDriver), |
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28 iDrawDevice(aDrawDevice) |
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29 { |
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30 } |
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31 |
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32 /** |
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33 Destroys a CSwDirectGdiImageTargetImpl. |
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34 @post This image target is removed from the associated driver's list of target images. |
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35 */ |
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36 CSwDirectGdiImageTargetImpl::~CSwDirectGdiImageTargetImpl() |
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37 { |
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38 iDriver.UnregisterTargetImage(*this); |
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39 delete iDrawDevice; |
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40 } |
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41 |
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42 /** |
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43 Two-phase construction of a CSwDirectGdiImageTarget object. |
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44 |
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45 @param aImage On success, holds a pointer to the newly-created image. |
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46 @param aDriver The driver to register this image with. |
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47 @param aDrawDevice The draw device to associate with this target. This target will take ownership |
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48 of the draw device if this method returns without an error, if the method returns with an error |
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49 then the caller still owns the draw device. |
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50 @param aSgImage The RSgImage which this image will be based upon. |
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51 |
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52 @return KErrNone if successful, KErrNoMemory if not enough memory could be allocated, otherwise a return |
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53 value from Construct(). |
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54 */ |
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55 TInt CSwDirectGdiImageTargetImpl::New(CSwDirectGdiImageTargetImpl*& aImage, CSwDirectGdiDriverImpl& aDriver, CFbsDrawDevice* aDrawDevice, const RSgImage& aSgImage) |
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56 { |
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57 CSwDirectGdiImageTargetImpl* image = new CSwDirectGdiImageTargetImpl(aDriver, aDrawDevice); |
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58 if (!image) |
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59 return KErrNoMemory; |
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60 TInt err = image->Construct(aSgImage); |
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61 if (err == KErrNone) |
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62 aImage = image; |
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63 else |
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64 { |
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65 image->iDrawDevice = NULL; |
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66 delete image; |
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67 } |
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68 return err; |
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69 } |
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70 |
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71 /** |
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72 Obtains a draw device pointer that is associated with this target |
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73 @return A pointer to the draw device. |
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74 */ |
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75 CFbsDrawDevice* CSwDirectGdiImageTargetImpl::DrawDevice() const |
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76 { |
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77 return iDrawDevice; |
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78 } |
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79 |
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80 /** |
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81 Gets the supplied image structure and sets the internal data. If it fails for any reason, it will |
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82 delete itself. |
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83 |
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84 @param aSgImage The RSgImage to create the source image from. |
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85 @return KErrNone if successful, KErrNotSupported if the RSgImage doesn't have the required interface, |
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86 otherwise an error from CDirectGdiImageRef::Construct(). |
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87 */ |
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88 TInt CSwDirectGdiImageTargetImpl::Construct(const RSgImage& aSgImage) |
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89 { |
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90 TInt err = CDirectGdiImageRef::Construct(aSgImage); |
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91 |
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92 if (err == KErrNone) |
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93 { |
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94 err = iDriver.RegisterTargetImage(*this); |
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95 } |
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96 |
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97 if (err == KErrNone) |
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98 { |
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99 Open(); |
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100 } |
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101 |
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102 return err; |
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103 } |