examples/SFExamples/games_on_symbian_os_code/oandx/src/oandxappview.cpp

// 
// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of the License "Eclipse Public License v1.0"
// which accompanies this distribution, and is available
// at the URL "http://www.eclipse.org/legal/epl-v10.html".
// 
// Initial Contributors:
// Nokia Corporation - initial contribution.
// 
// Contributors:
// 
// Description:
// 

#include <coemain.h>
#include <gulutil.h>
#include <e32keys.h>


#include "OandXAppView.h"
#include "OandXAppUi.h"
#include "OandXController.h"
#include "OandXEngine.h"
#include "OandX.pan"
#include "oandxdefs.h"


// O and X symbol-drawing control member functions

void COandXSymbolControl::DrawSymbol(CWindowGc& aGc, const TRect& aRect, TBool aDrawCross) const
        {
        TRect drawRect(aRect);
        
        // Shrink by about 15%
        drawRect.Shrink(aRect.Width()/6,aRect.Height()/6); 
        
    // Pen size set to just over 10% of the overall shape's size
        TSize penSize(aRect.Width()/9,aRect.Height()/9);
        aGc.SetPenSize(penSize);
        aGc.SetPenStyle(CGraphicsContext::ESolidPen);
        
        if (aDrawCross)
                {
                aGc.SetPenColor(KRgbGreen);
                
                // Cosmetic reduction of cross size by half the line width
                drawRect.Shrink(penSize.iWidth/2,penSize.iHeight/2);
                
                aGc.DrawLine(drawRect.iTl, drawRect.iBr);
                TInt temp;
                temp = drawRect.iTl.iX;
                drawRect.iTl.iX = drawRect.iBr.iX;
                drawRect.iBr.iX = temp;
                aGc.DrawLine(drawRect.iTl, drawRect.iBr);
                }
        else // draw a circle
                {
                aGc.SetPenColor(KRgbRed);
                aGc.SetBrushStyle(CGraphicsContext::ESolidBrush);
                aGc.DrawEllipse(drawRect);
                }
        };

// Tile member functions

COandXTile::COandXTile()
        {
        }
        
COandXTile::~COandXTile()
        {
        }

void COandXTile::ConstructL(RWindow& aWindow)
        {
        SetContainerWindowL(aWindow);
        // No call to ActivateL() as the window is activated by its container
        }

void COandXTile::Draw(const TRect& /*aRect*/) const
        {
        TTileState tileType;
        tileType = iCmdHandler->TileStatus(this);

        CWindowGc& gc = SystemGc();
        TRect rect = Rect();
        
        if (IsFocused())
                {
                gc.SetBrushColor(KRgbYellow);
                }
        gc.Clear(rect);
        if (tileType!=ETileBlank)
                {
                DrawSymbol(gc, rect, tileType==ETileCross);
                }
        }

void  COandXTile::SetOwnerAndObserver(COandXAppView* aControl)
        {
        iCmdHandler = aControl;
        SetObserver(aControl);
        }

void COandXTile::TryHitL()
        {
        if (iCmdHandler->TryHitSquareL(this))
                {
                DrawDeferred();
                }
        }

TKeyResponse COandXTile::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
        {
        TKeyResponse keyResponse = EKeyWasNotConsumed;
        if (aType!=EEventKey)
                {
                return keyResponse;
                }
        switch (aKeyEvent.iCode)
                {
        case EKeyOK:
                TryHitL();
                keyResponse = EKeyWasConsumed;
                break;
        default:
                keyResponse = EKeyWasNotConsumed;
                break;          
                }
        return keyResponse;
        }

TCoeInputCapabilities COandXTile::InputCapabilities() const
        {
        return TCoeInputCapabilities::ENavigation;
        }

void COandXTile::HandlePointerEventL(const TPointerEvent& aPointerEvent)
        {
        if (aPointerEvent.iType == TPointerEvent::EButton1Down)
                {
                TryHitL();
                }
        }

void COandXTile::FocusChanged(TDrawNow aDrawNow)
        {
        if (aDrawNow == EDrawNow)
                {
                DrawNow();
                }
        }


// Status window member functions

COandXStatusWin* COandXStatusWin::NewL(RWindow& aWindow)
        {
        COandXStatusWin* self=new(ELeave) COandXStatusWin;
        CleanupStack::PushL(self);
        self->ConstructL(aWindow);
        CleanupStack::Pop();
        self->SetFocusing(EFalse);
        return self;
        }

COandXStatusWin::COandXStatusWin()
        {
        }
        
COandXStatusWin::~COandXStatusWin()
        {
        }
        
void COandXStatusWin::ConstructL(RWindow& aWindow)
        {
        SetContainerWindowL(aWindow);
        // No call to ActivateL() as the window is activated by its container
        }

void COandXStatusWin::Draw(const TRect& /*aRect*/) const
        {
        CWindowGc& gc = SystemGc();
        TRect boxRect = Rect();
        gc.Clear(boxRect);
        TInt boxHeight = boxRect.iBr.iY - boxRect.iTl.iY;
        boxRect.iTl.iX = boxRect.iBr.iX - boxHeight;
        DrawSymbol(gc, boxRect, Controller().IsCrossTurn());
        }


// App View member functions

#define KBorderWidth 10
#define KLineWidth ((KTilesPerRow > KTilesPerCol ? KTilesPerRow : KTilesPerCol) > 4 ? 2 : 4)


COandXAppView* COandXAppView::NewL(const TRect& aRect)
        {
        COandXAppView* self = new(ELeave) COandXAppView;
        CleanupStack::PushL(self);
        self->ConstructL(aRect);
        CleanupStack::Pop(self);
        return self;
        }

COandXAppView::COandXAppView()
        {
        // empty.
        }

COandXAppView::~COandXAppView()
        {
        for (TInt i=0; i<KNumberOfTiles; i++)
                {
                delete iTiles[i];
                }
        iTiles.Close();
        delete iStatusWin;
        }

void COandXAppView::ConstructL(const TRect& aRect)
        {
        // Create a window for this application view
        CreateWindowL();

        for (TInt i = 0; i < KNumberOfTiles; i++)
                {
                User::LeaveIfError(iTiles.Append(CreateTileL()));
                }
        ComponentControl(0)->SetFocus(ETrue);
        iStatusWin = COandXStatusWin::NewL(Window());

        // Set the window's size
        SetRect(aRect); // needs to be after component creation - see SizeChanged()
        // Activate the window, which makes it ready to be drawn
        ActivateL();
        }

COandXTile* COandXAppView::CreateTileL()
        {
        COandXTile* tile = new(ELeave) COandXTile;
        CleanupStack::PushL(tile);
        tile->ConstructL(Window());
        CleanupStack::Pop(); // tile
        tile->SetOwnerAndObserver(this);
        return tile;
        }
        
void COandXAppView::SizeChanged()
        {
        __ASSERT_DEBUG(iTiles[KNumberOfTiles-1], Panic(EOandXNoTiles)); // all component tiles must already exist

        TRect rect = Rect();
        rect.iTl.iY = rect.iBr.iY - KStatusWinHeight;
        iStatusWin->SetRect(rect);
        rect = Rect();
        rect.iBr.iY -= KStatusWinHeight;
        TSize controlSize = rect.Size();
        TSize tileSize;
        tileSize.iWidth=2*((controlSize.iWidth-2*KBorderWidth-(KTilesPerRow-1)*KLineWidth)/(2*KTilesPerRow));
        tileSize.iHeight=2*((controlSize.iHeight-2*KBorderWidth-(KTilesPerCol-1)*KLineWidth)/(2*KTilesPerCol));
        iTileSide = tileSize.iWidth < tileSize.iHeight ? tileSize.iWidth :tileSize.iHeight;
        TSize boardSize;
        boardSize.iWidth = KTilesPerRow*iTileSide + (KTilesPerRow-1)*KLineWidth;
        boardSize.iHeight = KTilesPerCol*iTileSide + (KTilesPerCol-1)*KLineWidth;
        iBoardRect.iTl.iX = (controlSize.iWidth - boardSize.iWidth)/2;
        iBoardRect.iTl.iY = (controlSize.iHeight - boardSize.iHeight)/2;
        iBoardRect.iBr.iX = iBoardRect.iTl.iX + boardSize.iWidth;
        iBoardRect.iBr.iY = iBoardRect.iTl.iY + boardSize.iHeight;
        iBorderRect = iBoardRect;
        iBorderRect.Grow(KBorderWidth,KBorderWidth);
        
        for (TInt i=0; i<KNumberOfTiles; i++)
                {
                TInt row = i / KTilesPerRow;
                TInt col = i % KTilesPerRow;
                TRect tileRect;
                tileRect.iTl.iX = iBoardRect.iTl.iX + col * (iTileSide + KLineWidth);
                tileRect.iTl.iY = iBoardRect.iTl.iY + row * (iTileSide + KLineWidth);
                tileRect.iBr.iX = tileRect.iTl.iX + iTileSide;
                tileRect.iBr.iY = tileRect.iTl.iY + iTileSide;
                ComponentControl(i)->SetRect(tileRect);
                }
        }
        
void COandXAppView::ResetView()
        {
        MoveFocusTo(0);
        DrawNow();
        }


void COandXAppView::Draw(const TRect& /*aRect*/) const
        {
        CWindowGc& gc = SystemGc();
        TRect rect = Rect();
        
        // Draw outside the border
        gc.SetPenStyle(CGraphicsContext::ENullPen);
        gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
        gc.SetBrushColor(KRgbWhite);
        DrawUtils::DrawBetweenRects(gc, rect, iBorderRect);
        
        // Draw a border around the board
        gc.SetBrushStyle(CGraphicsContext::ESolidBrush);
        gc.SetBrushColor(KRgbGray);
        DrawUtils::DrawBetweenRects(gc, iBorderRect, iBoardRect);
        
        //Draw the first vertical line
        gc.SetBrushColor(KRgbBlack);
        TRect line;
        line.iTl.iX = iBoardRect.iTl.iX + iTileSide;
        line.iTl.iY = iBoardRect.iTl.iY;
        line.iBr.iX = line.iTl.iX + KLineWidth;
        line.iBr.iY = iBoardRect.iBr.iY;
        gc.DrawRect(line);
        // Draw the remaining (KTilesPerRow-2) vertical lines
        for (TInt i = 0; i < KTilesPerRow - 2; i++)
                {
                line .iTl.iX += iTileSide + KLineWidth;
                line .iBr.iX += iTileSide + KLineWidth;
                gc.DrawRect(line);
                }
        // Draw the first horizontal line
        line.iTl.iX = iBoardRect.iTl.iX;
        line.iTl.iY = iBoardRect.iTl.iY + iTileSide;
        line.iBr.iX = iBoardRect.iBr.iX;
        line.iBr.iY = line.iTl.iY + KLineWidth;
        gc.DrawRect(line);
        // Draw the remaining (KTilesPerCol -2) horizontal lines
        for (TInt i = 0; i < KTilesPerCol - 2; i++)
                {
                line .iTl.iY += iTileSide + KLineWidth;
                line .iBr.iY += iTileSide + KLineWidth;
                gc.DrawRect(line);
                }
        }


TInt COandXAppView::CountComponentControls() const
        {
        return KNumberOfTiles +1;
        }

CCoeControl* COandXAppView::ComponentControl(TInt aIndex) const
        {
        if (aIndex==KNumberOfTiles)
                {
                return iStatusWin;
                }
        else
                {
                return const_cast<COandXTile*>(iTiles[aIndex]);
                }
        }

TKeyResponse COandXAppView::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
        {
        TKeyResponse keyResponse = EKeyWasNotConsumed;
        if (aType!=EEventKey)
                {
                return keyResponse;
                }
        TInt index = IdOfFocusControl();
        switch (aKeyEvent.iCode)
                {
        case EKeyLeftArrow: // check not in first column
                if (index % KTilesPerRow)
                        {
                        MoveFocusTo(index-1);
                        keyResponse = EKeyWasConsumed;
                        }
                break;
        case EKeyRightArrow: // check not in last column
                if ((index % KTilesPerRow) < KTilesPerRow - 1)
                        {
                        MoveFocusTo(index+1);
                        keyResponse = EKeyWasConsumed;
                        }
                break;
        case EKeyUpArrow: // check not on top row
                if (index >= KTilesPerRow)
                        {
                        MoveFocusTo(index-KTilesPerRow);
                        keyResponse = EKeyWasConsumed;
                        }
                break;
        case EKeyDownArrow: // check not in bottom row
                if (index < KNumberOfTiles - KTilesPerRow)
                        {
                        MoveFocusTo(index+KTilesPerRow);
                        keyResponse = EKeyWasConsumed;
                        }
                break;
        default:
                keyResponse = ComponentControl(index)->OfferKeyEventL(aKeyEvent,aType);
                break;
                }
        return keyResponse;
        }

TInt COandXAppView::IdOfFocusControl()
        {
        TInt ret = -1;
        for (TInt i=0; i<KNumberOfTiles; i++)
                {
                if (ComponentControl(i)->IsFocused())
                        {
                        ret = i;
                        break;
                        }
                }
        __ASSERT_ALWAYS(ret>=0, Panic(EOandXNoTileWithFocus));
        return ret;
        }
        
void COandXAppView::SwitchFocus(TInt aFromIndex, CCoeControl* aToControl)
        {
        ComponentControl(aFromIndex)->SetFocus(EFalse, EDrawNow);
        aToControl->SetFocus(ETrue, EDrawNow);
        }
        
void COandXAppView::MoveFocusTo(const TInt index)
        {
        TInt oldIndex = IdOfFocusControl();
        if (index!= oldIndex)
                {
                SwitchFocus(oldIndex, ComponentControl(index));
                }
        }


void COandXAppView::HandleControlEventL(CCoeControl* aControl, TCoeEvent aEventType)
        {
        switch (aEventType)
                {
        case EEventRequestFocus:
                SwitchFocus(IdOfFocusControl(), aControl);
                break;
        default:
                break;
                }
        }

TBool COandXAppView::TryHitSquareL(const COandXTile* aControl)
        {
        return Controller().HitSquareL(Index(aControl));
        }

TTileState COandXAppView::TileStatus(const COandXTile* aControl) const
        {
        return Engine().TileStatus(Index(aControl));
        }

void COandXAppView::ShowTurn()
        {
        iStatusWin->DrawDeferred();
        }

---