sourcemapinfo.cpp

手机s60第三版动画编程相关

/*
 ============================================================================
 Name		: SourceMapInfo.cpp
 Author	  : 
 Version	 : 1.0
 Copyright   : Your copyright notice
 Description : CSourceMapInfo implementation
 ============================================================================
 */

#include "map/SourceMapInfo.h"
#include "Common.h"
#include <eikenv.h>

CSourceMapInfo::CSourceMapInfo(RFs& aFs, CImageHelper& aImgHelper) :
	iImgHelper(aImgHelper), iFs(aFs)
	{
	// No implementation required
	}

CSourceMapInfo::~CSourceMapInfo()
	{
	delete iMapImage;
	iMapImage = NULL;

	delete iMaskMapImage;
	iMaskMapImage = NULL;

	iMapItems.Reset();
	}

CSourceMapInfo* CSourceMapInfo::NewLC(RFs& aFs, CImageHelper& aImgHelper)
	{
	CSourceMapInfo* self = new (ELeave)CSourceMapInfo(aFs, aImgHelper);
	CleanupStack::PushL(self);
	self->ConstructL();
	return self;
	}

CSourceMapInfo* CSourceMapInfo::NewL(RFs& aFs, CImageHelper& aImgHelper)
	{
	CSourceMapInfo* self=CSourceMapInfo::NewLC(aFs, aImgHelper);
	CleanupStack::Pop(); // self;
	return self;
	}

void CSourceMapInfo::LoadSourceMapL(const TInt aIndex)
	{
	// 将以前的内容清空
	delete iMapImage;
	iMapImage = NULL;

	delete iMaskMapImage;
	iMaskMapImage = NULL;

	iMapItems.Reset();

	iIndex = aIndex - 1;

	// 创建两个图像对象
	iMapImage = new (ELeave)CFbsBitmap;
	iMaskMapImage = new (ELeave)CFbsBitmap;

	// 首先创建文件名
	TFileName imgFileName(KSourcePath);
	imgFileName.AppendNum(aIndex);
	imgFileName.Append(KMapImageExt);

	// 调用伪同步方法获取图像文件
	iImgHelper.LoadPngImageL(imgFileName, *iMapImage, *iMaskMapImage);

	// 读取地图信息
	ReadInfosFromFileL(aIndex);
	}

/**
 * 从文件读取源图信息
 */
void CSourceMapInfo::ReadInfosFromFileL(TInt aIndex)
	{
	RFile file;
	CleanupClosePushL(file);

	// 创建信息文件名
	TFileName infoFileName(KSourcePath);
	infoFileName.AppendNum(aIndex);
	infoFileName.Append(KMapInfoExt);

	// 打开文件
	User::LeaveIfError(file.Open(iFs, infoFileName, EFileRead));

	CleanupStack::Pop(&file);

	// 读取文件大小并构造描述符
	TInt fileSize;
	User::LeaveIfError(file.Size(fileSize));
	HBufC8* fileContent = HBufC8::NewLC(fileSize);
	TPtr8 ptr = fileContent->Des();

	User::LeaveIfError(file.Read(ptr));

	// 项个数 = 长度 / 4
	TInt itemsCount = fileSize / 4;
	for (TInt n = 0; n < itemsCount; n++)
		{
		TSourceMapItemInfo itemInfo;
		itemInfo.ParseL(ptr, n);

		// 如果四个值都>0
		if (itemInfo.iStartX > 0 && itemInfo.iStartY > 0 && itemInfo.iEndX > 0 && itemInfo.iEndY > 0)
			{
			itemInfo.iStartX--;
			itemInfo.iStartY--;
			itemInfo.iEndX--;
			itemInfo.iEndY--;
			
			iMapItems.Append(itemInfo);
			}
		}

	CleanupStack::PopAndDestroy(fileContent);

	file.Close();
	}

void CSourceMapInfo::ConstructL()
	{
	}

const CFbsBitmap& CSourceMapInfo::GetMapImage() const
	{
	return *iMapImage;
	}

const CFbsBitmap& CSourceMapInfo::GetMaskMapImage() const
	{
	return *iMaskMapImage;
	}

const RArray<TSourceMapItemInfo>& CSourceMapInfo::GetMapItems() const
	{
	return iMapItems;
	}