1 // Copyright (c) 2008-2009 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 // Interface for Render Stage Display Policy |
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15 // |
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16 // |
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17 |
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18 #ifndef WSDISPLAYPOLICY_H_ |
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19 #define WSDISPLAYPOLICY_H_ |
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20 |
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21 /** |
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22 @file |
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23 @publishedpartner |
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24 @released |
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25 */ |
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26 |
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27 #include <graphics/displayconfiguration.h> |
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28 #include <graphics/wsgraphicdrawerinterface.h> |
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29 |
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30 class MWsDisplayPolicy: public MWsObjectProvider |
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31 { |
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32 public: |
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33 enum |
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34 { |
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35 KUidWsDisplayPolicy = 0x102869FA, |
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36 ETypeId= KUidWsDisplayPolicy, |
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37 EWsObjectInterfaceId= KUidWsDisplayPolicy |
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38 }; |
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39 |
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40 enum TDisplayStatus |
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41 { |
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42 EDetach = 0, |
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43 EAttach, |
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44 EConnecting, |
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45 }; |
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46 public: |
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47 /** |
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48 * Notification from the Window Server that the application size mode list has been updated. |
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49 */ |
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50 virtual void NewAppModesAvailable()=0; |
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51 /** |
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52 * Determine the display configuration and application rendering extent to use for a given screen size mode. |
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53 * |
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54 * The Window Server uses this function when a request to change to a new screen size mode or new display |
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55 * configuration is made by a client. The display configuration passed in may be partially filled, and the |
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56 * combination of the defined entries in it and the requested screen size mode values shall be used to define |
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57 * the rest of the configuration and new application extent to be used. |
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58 * |
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59 * Only undefined entries in the configuration may be set by this function. Entries already defined must retain |
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60 * the same values. If the combination of defined entries and size mode values is not acceptable to the implementer, |
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61 * the function shall return KErrArgument. |
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62 * |
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63 * If the function returns KErrNone, the Window Server shall set the returned display configuration, notify render |
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64 * stages of the new application extent and change to use the screen size mode. If either this function returns |
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65 * EFalse or the call to set the display configuration fails for any reason (such as KErrNoMemory, for example), |
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66 * then no further changes are made. |
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67 * |
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68 * @see MWsScreenConfigList |
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69 * @see MWsDisplayMapping |
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70 * |
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71 * @param aScreenSizeMode The requested screen size mode. If static, the size in pixels, size in twips, and |
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72 * the rotation must be respected. If dynamic, only the rotation must be respected. |
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73 * @param aConfig The requested display configuration on input, the required configuration on return. Only |
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74 * undefined entries may be set. |
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75 * @param aExtent The screen size mode offset and size on input, the required application offset and size on return. |
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76 * If the screen driver buffer is used as the UI surface, this must be left unchanged. |
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77 * @return KErrNone if no error, otherwise a system wide error code |
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78 */ |
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79 virtual TInt GetSizeModeConfiguration(TInt aScreenSizeMode, TDisplayConfiguration& aConfig, TRect& aSizeModePosition) const =0; |
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80 virtual TInt SuitableAppMode(TDisplayStatus aSituation)=0; |
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81 /** |
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82 * Sets the application mode resumed to after a display is connected again after a disconnect. |
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83 * |
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84 * @param aMode The application mode. |
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85 */ |
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86 virtual void SetLastAppMode(TInt aMode)=0; |
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87 }; |
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88 |
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89 #endif /*WSDISPLAYPOLICY_H_*/ |
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