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1 /* |
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2 * Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Interface for observing Canvas visibility changes. |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef MMIDCANVASEXTENDED_H |
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20 #define MMIDCANVASEXTENDED_H |
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21 |
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22 #include <lcdui.h> |
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23 |
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24 // CLASS DEFINITION |
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25 /* |
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26 ----------------------------------------------------------------------------- |
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27 |
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28 DESCRIPTION |
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29 |
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30 Interface for observing canvas' visibility changes |
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31 |
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32 ----------------------------------------------------------------------------- |
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33 */ |
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34 |
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35 class MMIDCanvasExtended : public MMIDCanvas |
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36 { |
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37 public: |
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38 /** |
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39 * Adds new observer. Observer will be informed when display gains or loses focus. |
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40 * @param aDirectScreenAccess Interface which will be informed of visibility changes. |
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41 */ |
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42 virtual void AddCanvasVisibilityObserver(MDirectScreenAccess* aDirectScreenAccess) = 0; |
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43 |
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44 /** |
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45 * Removes observer. |
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46 * @param aDirectScreenAccess Observer which will be removed. |
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47 */ |
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48 virtual void RemoveCanvasVisibilityObserver(MDirectScreenAccess* aDirectScreenAccess) = 0; |
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49 }; |
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50 |
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51 #endif // MMIDCANVASEXTENDED_H |