examples/Graphics/WS/Scroll/Base.h

00001 /*
00002 Copyright (c) 2005-2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
00003 
00004 Redistribution and use in source and binary forms, with or without
00005 modification, are permitted provided that the following conditions are met:
00006 
00007 * Redistributions of source code must retain the above copyright notice, this
00008   list of conditions and the following disclaimer.
00009 * Redistributions in binary form must reproduce the above copyright notice,
00010   this list of conditions and the following disclaimer in the documentation
00011   and/or other materials provided with the distribution.
00012 * Neither the name of Nokia Corporation nor the names of its contributors
00013   may be used to endorse or promote products derived from this software
00014   without specific prior written permission.
00015 
00016 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00017 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00018 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00019 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00020 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00021 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00022 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00023 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00024 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00025 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00026 
00027 Description:  
00028 */
00029 
00030 
00031 
00032 #if !defined(__WINORD_H__)
00033 #define __WINORD_H__
00034 
00035 // Forward declarations
00036 class CWsRedrawer;
00037 class CWindow;
00038 
00039 
00041 //                                              Declaration of CWsClient
00043 
00044 class CWsClient : public CActive
00045         {
00046 public:
00047         void ConstructL();
00048         // destruct
00049         ~CWsClient();
00050         // main window
00051         virtual void ConstructMainWindowL();
00052         // terminate cleanly
00053         void Exit();
00054         // active object protocol
00055         void IssueRequest(); // request an event
00056         void DoCancel(); // cancel the request
00057         virtual void RunL() = 0; // handle completed request
00058         virtual void HandleKeyEventL (TKeyEvent& aKeyEvent) = 0;
00059 protected:
00060         //construct
00061         CWsClient();
00062         CWsScreenDevice* iScreen;
00063         CWsRedrawer* iRedrawer;
00064         RWsSession iWs;
00065         TWsEvent iWsEvent;
00066 private:
00067         RWindowGroup iGroup;
00068         CWindowGc* iGc;
00069         friend class CWsRedrawer; // needs to get at session
00070         friend class CWindow; // needs to get at session
00071         };
00072 
00073 
00074 
00076 //                                              CWsRedrawer declaration
00078 
00079 class CWsRedrawer : public CActive
00080         {
00081 public:
00082         // construct/destruct
00083         CWsRedrawer();
00084         void ConstructL(CWsClient* aClient);
00085         ~CWsRedrawer();
00086         // drawing
00087         void IssueRequest();
00088         void DoCancel();
00089         void RunL();
00090 protected:
00091         CWsClient* iClient;
00092         };
00093 
00094 
00096 //                                                      CWindow declaration
00098 
00099 class CWindow : public CBase
00100         {
00101 public:
00102         enum {KPointerMoveBufferSize=32};
00103         CWindow(CWsClient* aClient);
00104         void ConstructL (const TRect& aRect, const TRgb& aColor, CWindow* aParent=0);
00105         ~CWindow();
00106         // access
00107         RWindow& Window(); // our own window
00108         CWindowGc* SystemGc(); // system graphics context
00109         CWsScreenDevice* Screen();
00110         CFont* Font();
00111         // drawing
00112         virtual void Draw(const TRect& aRect) = 0;
00113         virtual void HandlePointerEvent (TPointerEvent& aPointerEvent) = 0;
00114 protected:
00115         RWindow iWindow; // window server window
00116         TRect iRect; // window's extent
00117 private:
00118         CWsClient* iClient; // client including session and group
00119         CFont*  iFont;
00120         };
00121 
00122 
00123 #endif

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