axmol/cocos/platform/winrt/CCWinRTUtils.cpp

/****************************************************************************
Copyright (c) 2010-2013 cocos2d-x.org
Copyright (c) Microsoft Open Technologies, Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "CCWinRTUtils.h"
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#endif
#include <Windows.h>
#include <wrl/client.h>
#include <wrl/wrappers/corewrappers.h>
#include <ppl.h>
#include <ppltasks.h>
#include <sstream>

using namespace Windows::UI::Xaml;
using namespace Windows::UI::Xaml::Controls;

NS_CC_BEGIN

using namespace Windows::Graphics::Display;
using namespace Windows::Storage;
using namespace concurrency;
using namespace Platform;
using namespace Windows::Storage;
using namespace Windows::Storage::Pickers;
using namespace Windows::Storage::Streams;
using namespace Windows::Networking::Connectivity;

bool isWindowsPhone()
{
#if _MSC_VER >= 1900
    if (Windows::Foundation::Metadata::ApiInformation::IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))
    {
        return true;
    }
#elif (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
    return true;
#else
    return false;
#endif
}

std::wstring CCUtf8ToUnicode(const char * pszUtf8Str, unsigned len/* = -1*/)
{
    std::wstring ret;
    do
    {
        if (! pszUtf8Str) break;
		// get UTF8 string length
		if (-1 == len)
		{
			len = strlen(pszUtf8Str);
		}
        if (len <= 0) break;

		// get UTF16 string length
		int wLen = MultiByteToWideChar(CP_UTF8, 0, pszUtf8Str, len, 0, 0);
		if (0 == wLen || 0xFFFD == wLen) break;
		
		// convert string  
        wchar_t * pwszStr = new wchar_t[wLen + 1];
        if (! pwszStr) break;
        pwszStr[wLen] = 0;
        MultiByteToWideChar(CP_UTF8, 0, pszUtf8Str, len, pwszStr, wLen + 1);
        ret = pwszStr;
        CC_SAFE_DELETE_ARRAY(pwszStr);
    } while (0);
    return ret;
}

std::string CCUnicodeToUtf8(const wchar_t* pwszStr)
{
	std::string ret;
	do
	{
		if(! pwszStr) break;
		size_t len = wcslen(pwszStr);
		if (len <= 0) break;
		
		size_t convertedChars = 0;
		char * pszUtf8Str = new char[len*3 + 1];
		WideCharToMultiByte(CP_UTF8, 0, pwszStr, len+1, pszUtf8Str, len*3 + 1, 0, 0);
		ret = pszUtf8Str;
		CC_SAFE_DELETE_ARRAY(pszUtf8Str);
	}while(0);

	return ret;
}

std::string PlatformStringToString(Platform::String^ s) {
	std::wstring t = std::wstring(s->Data());
	return std::string(t.begin(),t.end());
}

Platform::String^ PlatformStringFromString(const std::string& s)
{
    std::wstring ws(CCUtf8ToUnicode(s.c_str()));
    return ref new Platform::String(ws.data(), ws.length());
}

#if 0
// Method to convert a length in device-independent pixels (DIPs) to a length in physical pixels.
float ConvertDipsToPixels(float dips)
{
   static const float dipsPerInch = 96.0f;
   return floor(dips * DisplayProperties::LogicalDpi / dipsPerInch + 0.5f); // Round to nearest integer.
}

float getScaledDPIValue(float v) {
	auto dipFactor = DisplayProperties::LogicalDpi / 96.0f;
	return v * dipFactor;
}
#endif

void CC_DLL CCLogIPAddresses()
{
    auto hostnames = NetworkInformation::GetHostNames();
    int length = hostnames->Size;

    for(int i = 0; i < length; i++)
    {
        auto hn = hostnames->GetAt(i);
        if (hn->IPInformation != nullptr)
        {
            std::string s = PlatformStringToString(hn->DisplayName);
            log("IP Address: %s:", s.c_str());
        }
    }
}

std::string CC_DLL getDeviceIPAddresses()
{
    std::stringstream result;

    auto hostnames = NetworkInformation::GetHostNames();
    int length = hostnames->Size;

    for(int i = 0; i < length; i++)
    {
        auto hn = hostnames->GetAt(i);
        if (hn->IPInformation != nullptr)
        {
            result << PlatformStringToString(hn->DisplayName) << std::endl;
        }
    }

    return result.str();
}

Platform::Object^ findXamlElement(Platform::Object^ parent, Platform::String^ name)
{
    if (parent == nullptr || name == nullptr || name->Length() == 0)
    {
        return nullptr;
    }

    FrameworkElement^ element = dynamic_cast<FrameworkElement^>(parent);
    if (element == nullptr)
    {
        return nullptr;
    }

    if (element->Name == name)
    {
        return element;
    }

    Panel^ panel = dynamic_cast<Panel^>(element);
    if (panel == nullptr)
    {
        return nullptr;
    }

    int count = panel->Children->Size;
    for (int i = 0; i < count; i++)
    {
        auto result = findXamlElement(panel->Children->GetAt(i), name);
        if (result != nullptr)
        {
            return result;
        }
    }

    return nullptr;
}


bool removeXamlElement(Platform::Object^ parent, Platform::Object^ element)
{
    Panel^ panel = dynamic_cast<Panel^>(parent);
    if (panel == nullptr)
    {
        return false;
    }

    UIElement^ uiElement = dynamic_cast<UIElement^>(element);
    if (uiElement == nullptr)
    {
        return false;
    }

    unsigned int index;
    if (!panel->Children->IndexOf(uiElement, &index))
    {
        return false;
    }

    panel->Children->RemoveAt(index);

    return true;
}

bool replaceXamlElement(Platform::Object^ parent, Platform::Object^ add, Platform::Object^ remove)
{
    Panel^ panel = dynamic_cast<Panel^>(parent);
    if (panel == nullptr)
    {
        return false;
    }

    UIElement^ addElement = dynamic_cast<UIElement^>(add);
    if (addElement == nullptr)
    {
        return false;
    }

    UIElement^ removeElement = dynamic_cast<UIElement^>(remove);
    if (removeElement == nullptr)
    {
        return false;
    }

    unsigned int index;
    if (!panel->Children->IndexOf(removeElement, &index))
    {
        return false;
    }

    panel->Children->RemoveAt(index);
    panel->Children->InsertAt(index, addElement);

    return true;
}

// Function that reads from a binary file asynchronously.
Concurrency::task<Platform::Array<byte>^> ReadDataAsync(Platform::String^ path)
{
	using namespace Windows::Storage;
	using namespace Concurrency;
		
	return create_task(StorageFile::GetFileFromPathAsync(path)).then([&](StorageFile^ f)
	{
		return FileIO::ReadBufferAsync(f);

	}).then([] (Streams::IBuffer^ fileBuffer) -> Platform::Array<byte>^ 
	{
		auto fileData = ref new Platform::Array<byte>(fileBuffer->Length);
		Streams::DataReader::FromBuffer(fileBuffer)->ReadBytes(fileData);
		return fileData;
	});
}

std::string computeHashForFile(const std::string& filePath)
{
    std::string ret = filePath;
    int pos = std::string::npos;
    pos = ret.find_last_of('/');

    if (pos != std::string::npos) {
        ret = ret.substr(pos);
    }

    pos = ret.find_last_of('.');

    if (pos != std::string::npos) {
        ret = ret.substr(0, pos);
    }

    CREATEFILE2_EXTENDED_PARAMETERS extParams = { 0 };
    extParams.dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
    extParams.dwFileFlags = FILE_FLAG_RANDOM_ACCESS;
    extParams.dwSecurityQosFlags = SECURITY_ANONYMOUS;
    extParams.dwSize = sizeof(extParams);
    extParams.hTemplateFile = nullptr;
    extParams.lpSecurityAttributes = nullptr;

    Microsoft::WRL::Wrappers::FileHandle file(CreateFile2(std::wstring(filePath.begin(), filePath.end()).c_str(), GENERIC_READ, FILE_SHARE_READ, OPEN_EXISTING, &extParams));

    if (file.Get() != INVALID_HANDLE_VALUE) {
        FILE_BASIC_INFO  fInfo = { 0 };
        if (GetFileInformationByHandleEx(file.Get(), FileBasicInfo, &fInfo, sizeof(FILE_BASIC_INFO))) {
            std::stringstream ss;
            ss << ret << "_";
            ss << fInfo.CreationTime.QuadPart;
            ss << fInfo.ChangeTime.QuadPart;
            ret = ss.str();
        }
    }

    return ret;
}

bool createMappedCacheFile(const std::string& srcFilePath, std::string& cacheFilePath, std::string ext)
{
    bool ret = false;
    auto folderPath = FileUtils::getInstance()->getWritablePath();
    cacheFilePath = folderPath + computeHashForFile(srcFilePath) + ext;
    std::string prevFile = UserDefault::getInstance()->getStringForKey(srcFilePath.c_str());

    if (prevFile == cacheFilePath) {
        ret = FileUtils::getInstance()->isFileExist(cacheFilePath);
    }
    else {
        FileUtils::getInstance()->removeFile(prevFile);
    }

    UserDefault::getInstance()->setStringForKey(srcFilePath.c_str(), cacheFilePath);
    return ret;
}

void destroyMappedCacheFile(const std::string& key)
{
    std::string value = UserDefault::getInstance()->getStringForKey(key.c_str());
    
    if (!value.empty()) {
        FileUtils::getInstance()->removeFile(value);
    }

    UserDefault::getInstance()->setStringForKey(key.c_str(), "");
}

NS_CC_END