biaofengbasecontrol.cpp

一个可以加载图片作为下拉菜单的symbian手机示例

/*
 * BiaofengBaseControl.cpp
 *
 *  Created on: 2009-4-24
 *      Author: IBM
 */

#include "BiaofengBaseControl.h"

#include "BiaoCommContainer.h"

//////////////////////////////////////////////////////////////////////////////
//
// -----> CSmileyDialog(implementation)
//
//////////////////////////////////////////////////////////////////////////////
TBool CSmileyDialog::RunDlgLD()
    {
    
   // CEikDialog* dialog = new (ELeave) CSmileyDialog();
   // return (dialog->ExecuteLD(R_SMILEY_DIALOG));
    
    }

// This function is used by CEikForm::ConstructByTypeL() to create the custom 
// control within the dialog.

SEikControlInfo CSmileyDialog::CreateCustomControlL(TInt aControlType)
    {
    SEikControlInfo controlInfo;
    controlInfo.iControl = NULL;
    controlInfo.iTrailerTextId = 0;
    controlInfo.iFlags = 0;

    switch (aControlType)
        {
    case ESmileyControl:
        controlInfo.iControl = new(ELeave) CSmileyContainer;
        break;
    default:
        break;
        }
    return controlInfo;
    }


//////////////////////////////////////////////////////////////////////////////
//
// -----> CSmiley (implementation)
//
//////////////////////////////////////////////////////////////////////////////


// CSmiley doesn't need a ConstructL() because it's a simple control.

CSmiley::CSmiley(TBool aSmiling) : iSmiling(aSmiling)
    {
    }

CSmiley::~CSmiley()
    {
    }

TBool CSmiley::IsSmiling()
    {
    return iSmiling;
    }

void CSmiley::Draw(const TRect& aRect) const
    {
    CWindowGc& gc=SystemGc();
    if (IsFocused())
        {
        gc.SetPenColor(KRgbBlack);
        }
    else
        {
        gc.SetPenColor(KRgbWhite);
        }
    gc.SetBrushColor(KRgbWhite);
    gc.Clear(Rect());
    gc.DrawRect(Rect());

    gc.SetClippingRect(aRect);

    // Draw the smiley face, smiling or looking sad
    gc.SetPenColor(KRgbBlack);
    // Draw a circle for the face
    gc.DrawEllipse(iSmileyRect);
    // Draw the eyes
    TPoint leftEye(iSmileyWidth/3, iSmileyHeight/3);
    TPoint rightEye(iSmileyWidth*2/3, iSmileyHeight/3);
    gc.SetPenSize(TSize(5,5));
    gc.Plot(iSmileyRect.iTl+leftEye);
    gc.Plot(iSmileyRect.iTl+rightEye);
    //Draw the mouth, smiling or looking sad.
    gc.SetPenSize(TSize(1,1));
    gc.SetPenColor(KRgbWhite);
    if (iSmiling)
        gc.DrawArc(iFrownRect, iFrownRect.iTl+TPoint(iSmileyWidth/2,iFrownRect.Height()/2), 
                              iFrownRect.iTl+TPoint(0,iFrownRect.Height()/2));
    else
        gc.DrawArc(iSmileRect, iSmileRect.iTl+TPoint(0,iSmileRect.Height()/2), 
                              iSmileRect.iTl+TPoint(iSmileyWidth/2,iSmileRect.Height()/2));
    gc.SetPenColor(KRgbBlack);
    if (iSmiling)
        gc.DrawArc(iSmileRect, iSmileRect.iTl+TPoint(0,iSmileRect.Height()/2), 
                              iSmileRect.iTl+TPoint(iSmileyWidth/2,iSmileRect.Height()/2));
    else
        gc.DrawArc(iFrownRect, iFrownRect.iTl+TPoint(iSmileyWidth/2,iFrownRect.Height()/2), 
                              iFrownRect.iTl+TPoint(0,iFrownRect.Height()/2));
    }

void CSmiley::SizeChanged()
    {
    // Calculate sizes of rectangles for drawing face and mouth
    iSmileyRect=Rect();
    // Allow room for the focus rectangle round the outside
    iSmileyRect.Shrink(3,3);
    iSmileyWidth=iSmileyRect.Width();
    iSmileyHeight=iSmileyRect.Height();
    iSmileRect.SetRect(iSmileyRect.iTl+TPoint(iSmileyWidth/4, iSmileyHeight/2),
                    TSize(iSmileyWidth/2, iSmileyHeight/3));
    iFrownRect.SetRect(iSmileyRect.iTl+TPoint(iSmileyWidth/4, iSmileyHeight*2/3),
                    TSize(iSmileyWidth/2, iSmileyHeight/3));
    }

void CSmiley::FocusChanged(TDrawNow aDrawNow)
    {
    if (aDrawNow)
        DrawNow();
    }

void CSmiley::HandlePointerEventL(const TPointerEvent& aPointerEvent)
    {
    if (aPointerEvent.iType==TPointerEvent::EButton1Down)
        {
        iSmiling = !iSmiling;
        DrawNow();
        }
    }

TKeyResponse CSmiley::OfferKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType)
    {
    // The space bar changes the "mood" of the CSmiley.
    
    if (aType==EEventKey && aKeyEvent.iScanCode==EStdKeySpace)
        {
        iSmiling = !iSmiling;
        DrawNow();
        return EKeyWasConsumed;
        }
    else
        {
        return EKeyWasNotConsumed;
        }
    }