author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 17 Sep 2010 08:36:49 +0300 | |
changeset 183 | 6a1564a2f3e6 |
permissions | -rw-r--r-- |
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// Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// This file is intended for use by clients of EGL. It provides |
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// the window type that clients must use in order to create EGL |
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// window surfaces that have no dependency on the window server. |
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/** |
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@file |
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@publishedPartner |
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@prototype |
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*/ |
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#ifndef __EGLWINDOW_H__ |
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#define __EGLWINDOW_H__ |
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#include <graphics/eglwindowcommon.h> |
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/** |
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Base class for all EGL window types except for RWindow. If an |
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RWindow pointer is cast to this type, IsRWindow() will return true. |
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*/ |
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NONSHARABLE_CLASS(REglWindowBase) |
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{ |
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public: |
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virtual TBool IsValid() const = 0; |
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virtual TSize SizeInPixels() const = 0; |
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virtual TSize SizeInTwips() const = 0; |
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virtual TInt ScreenNumber() const = 0; |
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virtual void SetBackgroundColor(TRgb aColor, TBool aTriggerRedraw) = 0; |
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virtual TInt SetBackgroundSurface(const TSurfaceConfiguration &aConfiguration, TBool aTriggerRedraw) = 0; |
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virtual void RemoveBackgroundSurface(TBool aTriggerRedraw) = 0; |
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protected: |
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REglWindowBase(); |
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private: |
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friend class TEglWindowInterface; |
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TBool IsRWindow() const; |
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private: |
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//This is aligned with RWindow::iBuffer, which is at offset 4 in RWindow. |
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//Note that this class has virtual functions to the vptr occupies bytes 0-3. |
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TInt iIsRWindow; |
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}; |
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/** |
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Forward Declarations. |
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*/ |
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class MEglStandAloneWindowObserver; |
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/** |
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Concrete EGL window type that has mutable size. It informs its |
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delegate whenever a surface is attached and removed from it. It is |
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intended that render stages requiring an EGL window surface create a |
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window of this type, passing itself as the delegate. When creating |
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the EGL window surface, the render stage passes this window as the |
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EGLNativeWindowType. Whenever EGL attaches and removes surfaces, the |
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render stage is notified via the delegate and can act accordingly by |
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modifying the compositor's scene. The symbian composition surface |
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can be retrieved by calling GetBackgroundSurface(). This surface |
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is considered unmappable. Users must not call RSurfaceManager:: |
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MapSurface() for this surface. |
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*/ |
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NONSHARABLE_CLASS(REglStandAloneWindow) : public REglWindowBase |
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{ |
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public: |
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IMPORT_C REglStandAloneWindow(); |
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IMPORT_C TInt Create(const TSize& aSizeInPixels, const TSize& aSizeInTwips, TInt aScreenNumber, MEglStandAloneWindowObserver& aObserver); |
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IMPORT_C void Close(); |
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IMPORT_C void SetSizeInPixels(const TSize& aSize); |
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IMPORT_C void SetSizeInTwips(const TSize& aSize); |
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IMPORT_C TRgb BackgroundColor() const; |
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IMPORT_C TBool GetBackgroundSurface(TSurfaceConfiguration& aConfiguration) const; |
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public: //From REglWindowBase. |
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IMPORT_C TBool IsValid() const; |
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IMPORT_C TSize SizeInPixels() const; |
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IMPORT_C TSize SizeInTwips() const; |
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IMPORT_C TInt ScreenNumber() const; |
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IMPORT_C void SetBackgroundColor(TRgb aColor, TBool aTriggerRedraw); |
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IMPORT_C TInt SetBackgroundSurface(const TSurfaceConfiguration& aConfiguration, TBool aTriggerRedraw); |
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IMPORT_C void RemoveBackgroundSurface(TBool aTriggerRedraw); |
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private: |
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class TEglStandAloneWindowData; |
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TEglStandAloneWindowData* iData; |
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}; |
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/** |
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Delegate class intended for implementation by a render stage that |
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requires an EGL window surface. See REglStandAloneWindow. |
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*/ |
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class MEglStandAloneWindowObserver |
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{ |
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public: |
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/** |
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This method is called by REglStandAloneWindow just after a new |
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background color was set for the REglStandAloneWindow instance. |
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It provides the observer with an oportunity to adjust the |
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compositor's scene to reflect this change. |
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|
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@param aWindow The instance of REglStandAloneWindow that |
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the background color was set upon. |
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|
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@param aTriggerRedraw If set, the client that set the |
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background surface expects that it will |
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appear on screen immediately. |
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*/ |
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virtual void ColorWasSetForWindow(const REglStandAloneWindow& aWindow, TBool aTriggerRedraw) = 0; |
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|
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/** |
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This method is called by REglStandAloneWindow just after a new |
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background surface was set on the REglStandAloneWindow instance. |
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It provides the observer with an oportunity to adjust the |
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compositor's scene to include this new surface. |
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|
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@param aWindow The instance of REglStandAloneWindow that |
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the background surface was set upon. |
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|
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@param aTriggerRedraw If set, the client that set the |
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background surface expects that it will |
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appear on screen immediately. |
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|
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@return KErrNone on success or any system-wide error code. This |
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is reported back to the caller of REglStandAloneWindow:: |
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SetBackgroundSurface(). |
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*/ |
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virtual TInt SurfaceWasSetForWindow(const REglStandAloneWindow& aWindow, TBool aTriggerRedraw) = 0; |
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|
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/** |
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This method is called by REglStandAloneWindow just before the |
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current background surface will be removed from the |
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REglStandAloneWindow instance. It provides the observer with an |
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oportunity to adjust the compositor's scene to exclude this |
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surface and unregister the surface with the compositor. |
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|
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@param aWindow The instance of REglStandAloneWindow that |
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the background surface was removed from. |
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|
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@param aTriggerRedraw If set, the client that removed the |
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background surface expects that the |
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changes will appear on screen |
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immediately. |
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*/ |
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virtual void SurfaceWillBeRemovedForWindow(const REglStandAloneWindow& aWindow, TBool aTriggerRedraw) = 0; |
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}; |
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#endif //__EGLWINDOW_H__ |