author | William Roberts <williamr@symbian.org> |
Wed, 31 Mar 2010 12:27:01 +0100 | |
branch | Symbian2 |
changeset 3 | e1b950c65cb4 |
parent 2 | epoc32/include/hlpzoom.h@2fe1408b6811 |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
williamr@2 | 1 |
// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies). |
williamr@2 | 2 |
// All rights reserved. |
williamr@2 | 3 |
// This component and the accompanying materials are made available |
williamr@2 | 4 |
// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
williamr@2 | 5 |
// which accompanies this distribution, and is available |
williamr@2 | 6 |
// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
williamr@2 | 7 |
// |
williamr@2 | 8 |
// Initial Contributors: |
williamr@2 | 9 |
// Nokia Corporation - initial contribution. |
williamr@2 | 10 |
// |
williamr@2 | 11 |
// Contributors: |
williamr@2 | 12 |
// |
williamr@2 | 13 |
// Description: |
williamr@2 | 14 |
// |
williamr@2 | 15 |
|
williamr@2 | 16 |
#ifndef __HLPZOOM_H__ |
williamr@2 | 17 |
#define __HLPZOOM_H__ |
williamr@2 | 18 |
|
williamr@2 | 19 |
// System includes |
williamr@2 | 20 |
#include <e32std.h> |
williamr@2 | 21 |
|
williamr@2 | 22 |
// Classes referenced |
williamr@2 | 23 |
class MGraphicsDeviceMap; |
williamr@2 | 24 |
|
williamr@2 | 25 |
|
williamr@2 | 26 |
/////////////////////////////////////////////////////////////////////////////////////// |
williamr@2 | 27 |
// ----> MHlpZoomStateManager (header) |
williamr@2 | 28 |
/////////////////////////////////////////////////////////////////////////////////////// |
williamr@2 | 29 |
class MHlpZoomStateManager |
williamr@2 | 30 |
/** |
williamr@2 | 31 |
@internalComponent |
williamr@2 | 32 |
@released |
williamr@2 | 33 |
*/ |
williamr@2 | 34 |
{ |
williamr@2 | 35 |
public: // Zoom state |
williamr@2 | 36 |
enum THlpZoomState |
williamr@2 | 37 |
{ |
williamr@2 | 38 |
EHlpZoomStateSmall = -1, |
williamr@2 | 39 |
EHlpZoomStateNormal = 0, |
williamr@2 | 40 |
EHlpZoomStateLarge = 1 |
williamr@2 | 41 |
}; |
williamr@2 | 42 |
|
williamr@2 | 43 |
public: // From MHlpZoomStateManager |
williamr@2 | 44 |
virtual void SetZoomState(THlpZoomState aState) = 0; |
williamr@2 | 45 |
virtual THlpZoomState ZoomState() const = 0; |
williamr@2 | 46 |
|
williamr@2 | 47 |
public: // From MHlpZoomStateManager |
williamr@2 | 48 |
virtual MGraphicsDeviceMap& ZoomDeviceMap() const = 0; |
williamr@2 | 49 |
virtual TInt ZoomFactorValueForZoomState(THlpZoomState aState) const = 0; |
williamr@2 | 50 |
}; |
williamr@2 | 51 |
|
williamr@2 | 52 |
|
williamr@2 | 53 |
|
williamr@2 | 54 |
/////////////////////////////////////////////////////////////////////////////////////// |
williamr@2 | 55 |
// ----> MHlpZoomStateObserver (header) |
williamr@2 | 56 |
/////////////////////////////////////////////////////////////////////////////////////// |
williamr@2 | 57 |
class MHlpZoomStateObserver |
williamr@2 | 58 |
/** |
williamr@2 | 59 |
@internalComponent |
williamr@2 | 60 |
@released |
williamr@2 | 61 |
*/ |
williamr@2 | 62 |
{ |
williamr@2 | 63 |
public: // From MHlpZoomStateObserver |
williamr@2 | 64 |
virtual void HandleZoomStateChangedL(MHlpZoomStateManager::THlpZoomState aZoomState) = 0; |
williamr@2 | 65 |
}; |
williamr@2 | 66 |
|
williamr@2 | 67 |
|
williamr@2 | 68 |
|
williamr@2 | 69 |
/////////////////////////////////////////////////////////////////////////////////////// |
williamr@2 | 70 |
// ----> MHlpZoomStateChangeNotifier (header) |
williamr@2 | 71 |
/////////////////////////////////////////////////////////////////////////////////////// |
williamr@2 | 72 |
class MHlpZoomStateChangeNotifier : public MHlpZoomStateManager |
williamr@2 | 73 |
/** |
williamr@2 | 74 |
@internalComponent |
williamr@2 | 75 |
@released |
williamr@2 | 76 |
*/ |
williamr@2 | 77 |
{ |
williamr@2 | 78 |
public: // From MHlpZoomStateChangeNotifier |
williamr@2 | 79 |
virtual void RegisterForZoomStateChangeNotificationsL(MHlpZoomStateObserver& aObserver) = 0; |
williamr@2 | 80 |
virtual void RegisterForZoomStateChangeNotificationsCancel(MHlpZoomStateObserver& aObserver) = 0; |
williamr@2 | 81 |
}; |
williamr@2 | 82 |
|
williamr@2 | 83 |
#endif |