一个很完善的symbian平台自定义Listbox控件

#include "GraphicStyleListBox.h" _LIT(KTab," "); CGraphicStyleListBox* CGraphicStyleListBox::NewL(const TRect& aRect, CEikonEnv* aEikon) { CGraphicStyleListBox* self = CGraphicStyleListBox::NewLC(aRect, aEikon); CleanupStack::Pop(self); return self; } CGraphicStyleListBox* CGraphicStyleListBox::NewLC(const TRect& aRect, CEikonEnv* aEikon) { CGraphicStyleListBox* self = new (ELeave) CGraphicStyleListBox(); CleanupStack::PushL(self); self->ConstructL(aRect, aEikon); return self; } CGraphicStyleListBox::CGraphicStyleListBox() { iIndex = 0; iStartIndex = 0; iScreenCount = 6; iIconDistance = 0; iAlignmentType = 0; iTextAndIconDistance = 0; } void CGraphicStyleListBox::ConstructL(const TRect& aRect, CEikonEnv* aEikon) { iClientRect.SetRect(aRect.iTl, aRect.Size()); iEikEnv = aEikon; iFristInfoArray = new (ELeave) CDesCArrayFlat(4); iSencondInfoArray = new (ELeave) CDesCArrayFlat(4); } CGraphicStyleListBox::~CGraphicStyleListBox() { if (iFristInfoArray) { iFristInfoArray->Reset(); delete iFristInfoArray; } if (iSencondInfoArray) { iSencondInfoArray->Reset(); delete iSencondInfoArray; } } void CGraphicStyleListBox::Draw(CWindowGc& gc) { const CFont* Font = iEikEnv->NormalFont(); gc.UseFont(Font); //绘制背景 if (iBackGround && iBackGroundMask) { gc.DrawBitmapMasked(iClientRect, iBackGround, TRect(0, 0, iBackGroundSize.iWidth, iBackGroundSize.iHeight), iBackGroundMask, EFalse); } else if (iBackGround && !iBackGroundMask) { gc.DrawBitmap(iClientRect, iBackGround); } else if (iIsDisPlayBackRgb) { gc.SetBrushStyle(CGraphicsContext::ESolidBrush); gc.SetBrushColor(iBackGroundRgb); gc.DrawRect(iClientRect); } TInt FontHigh = Font->HeightInPixels();//字体高度 TInt OptaionHigh = iClientRect.Height() / iScreenCount;//一个选项的高度; TInt TxtCount1 = iFristInfoArray->Count(); TInt TxtCount2 = iSencondInfoArray->Count(); TInt IconH(0);//绘制图片的高度 TInt IconCount(0);//位图个数 TInt IConMaskCount(0);//掩码图个数 TInt FristPointX(0); TInt FristPointY(0); TInt SencondPointX(0); TInt SencondPointY(0); TInt IconDistance(0); if (iIconArray) { IconCount = iIconArray->Count(); if (IconCount) { IconH = OptaionHigh; IconDistance = iIconDistance; } } if (iIconMaskArray) { IConMaskCount = iIconMaskArray->Count(); } TRect rct; rct.SetRect(iClientRect.iTl, TSize(iClientRect.Width(), OptaionHigh));//第一个高亮区的区域 for (TInt i(0); i < iScreenCount; i++) { if ((iStartIndex + i) < TxtCount1) { //绘制前景 if ((i + iStartIndex) == iIndex) { if (iForeGround && iForeGroundMask) { gc.DrawBitmapMasked(TRect(TPoint(rct.iTl.iX, rct.iTl.iY + i * OptaionHigh), rct.Size()), iForeGround, TRect(0, 0, iForeGroundSize.iWidth, iForeGroundSize.iHeight), iForeGroundMask, EFalse); } else if (iForeGround && !iForeGroundMask) { gc.DrawBitmap(TRect(TPoint(rct.iTl.iX, rct.iTl.iY + i * OptaionHigh), rct.Size()), iForeGround); } else if (iIsDisPlayForeRgb) { gc.SetBrushStyle(CGraphicsContext::ESolidBrush); gc.SetBrushColor(iForeGroundRgb); gc.DrawRect(TRect(TPoint(rct.iTl.iX, rct.iTl.iY + i * OptaionHigh), rct.Size())); } } //绘制图像 if (IconCount && IConMaskCount) { gc.DrawBitmapMasked(TRect(TPoint(rct.iTl.iX + iIconDistance, rct.iTl.iY + i * OptaionHigh), TSize(IconH, IconH)), (*iIconArray)[i + iStartIndex], TRect(0, 0, iIconSize.iWidth, iIconSize.iHeight), (*iIconMaskArray)[i + iStartIndex], EFalse); } else if (IconCount && !IConMaskCount) { gc.DrawBitmap(TRect(TPoint(rct.iTl.iX + iIconDistance, rct.iTl.iY + i * OptaionHigh), TSize(IconH, IconH)), (*iIconArray)[i + iStartIndex]); } //设置文字颜色 gc.SetPenColor(TRgb(255, 255, 255)); if (TxtCount1 && TxtCount2)//有2个文本的 { FristPointY = iClientRect.iTl.iY + OptaionHigh / 4 + FontHigh / 2 + i * OptaionHigh; SencondPointY = rct.iTl.iY + (OptaionHigh * 3) / 4 + FontHigh / 2 + i * OptaionHigh; if (iAlignmentType == 0)//左对齐 { FristPointX = iClientRect.iTl.iX + iTextAndIconDistance + IconDistance + IconH; SencondPointX = FristPointX; } else if (iAlignmentType == 1)//局中 { FristPointX = iClientRect.iTl.iX + IconDistance + IconH + (iClientRect.Width() - IconDistance - IconH) / 2 - Font->TextWidthInPixels( iFristInfoArray->MdcaPoint(i + iStartIndex)) / 2; SencondPointX = iClientRect.iTl.iX + IconDistance + IconH + (iClientRect.Width() - IconDistance - IconH) / 2