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1 // Copyright (c) 2000-2009 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 #ifndef __HLPZOOM_H__ |
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17 #define __HLPZOOM_H__ |
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18 |
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19 // System includes |
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20 #include <e32std.h> |
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21 |
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22 // Classes referenced |
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23 class MGraphicsDeviceMap; |
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24 |
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25 |
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26 // |
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27 // ----> MHlpZoomStateManager (header) |
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28 // |
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29 class MHlpZoomStateManager |
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30 /** |
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31 @internalComponent |
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32 @released |
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33 */ |
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34 { |
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35 public: // Zoom state |
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36 enum THlpZoomState |
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37 { |
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38 EHlpZoomStateSmall = -1, |
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39 EHlpZoomStateNormal = 0, |
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40 EHlpZoomStateLarge = 1 |
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41 }; |
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42 |
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43 public: // From MHlpZoomStateManager |
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44 virtual void SetZoomState(THlpZoomState aState) = 0; |
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45 virtual THlpZoomState ZoomState() const = 0; |
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46 |
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47 public: // From MHlpZoomStateManager |
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48 virtual MGraphicsDeviceMap& ZoomDeviceMap() const = 0; |
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49 virtual TInt ZoomFactorValueForZoomState(THlpZoomState aState) const = 0; |
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50 }; |
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51 |
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52 |
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53 |
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54 // |
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55 // ----> MHlpZoomStateObserver (header) |
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56 // |
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57 class MHlpZoomStateObserver |
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58 /** |
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59 @internalComponent |
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60 @released |
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61 */ |
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62 { |
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63 public: // From MHlpZoomStateObserver |
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64 virtual void HandleZoomStateChangedL(MHlpZoomStateManager::THlpZoomState aZoomState) = 0; |
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65 }; |
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66 |
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67 |
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68 |
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69 // |
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70 // ----> MHlpZoomStateChangeNotifier (header) |
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71 // |
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72 class MHlpZoomStateChangeNotifier : public MHlpZoomStateManager |
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73 /** |
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74 @internalComponent |
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75 @released |
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76 */ |
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77 { |
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78 public: // From MHlpZoomStateChangeNotifier |
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79 virtual void RegisterForZoomStateChangeNotificationsL(MHlpZoomStateObserver& aObserver) = 0; |
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80 virtual void RegisterForZoomStateChangeNotificationsCancel(MHlpZoomStateObserver& aObserver) = 0; |
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81 }; |
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82 |
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83 #endif |