C++ XMLElement::HasAttribute方法代码示例

void ParticleEmitter::GetFloatMinMax(const XMLElement& element, float& minValue, float& maxValue)
{
    if (element.IsNull())
        return;
    
    if (element.HasAttribute("value"))
        minValue = maxValue = element.GetFloat("value");
    
    if (element.HasAttribute("min") && element.HasAttribute("max"))
    {
        minValue = element.GetFloat("min");
        maxValue = element.GetFloat("max");
    }
}

void RenderTargetInfo::Load(const XMLElement& element)
{
    name_ = element.GetAttribute("name");
    tag_ = element.GetAttribute("tag");
    if (element.HasAttribute("enabled"))
        enabled_ = element.GetBool("enabled");
    
    String formatName = element.GetAttribute("format");
    format_ = Graphics::GetFormat(formatName);
    
    if (element.HasAttribute("filter"))
        filtered_ = element.GetBool("filter");
    
    if (element.HasAttribute("srgb"))
        sRGB_ = element.GetBool("srgb");
    
    if (element.HasAttribute("size"))
        size_ = element.GetIntVector2("size");
    if (element.HasAttribute("sizedivisor"))
    {
        size_ = element.GetIntVector2("sizedivisor");
        sizeMode_ = SIZE_VIEWPORTDIVISOR;
    }
    if (element.HasAttribute("rtsizedivisor"))
    {
        size_ = element.GetIntVector2("rtsizedivisor");
        sizeMode_ = SIZE_RENDERTARGETDIVISOR;
    }
    
    if (element.HasAttribute("width"))
        size_.x_ = element.GetInt("width");
    if (element.HasAttribute("height"))
        size_.y_ = element.GetInt("height");
}

void ParticleEffect::GetVector3MinMax(const XMLElement& element, Vector3& minValue, Vector3& maxValue)
{
    if (element.IsNull())
        return;

    if (element.HasAttribute("value"))
        minValue = maxValue = element.GetVector3("value");

    if (element.HasAttribute("min") && element.HasAttribute("max"))
    {
        minValue = element.GetVector3("min");
        maxValue = element.GetVector3("max");
    }
}

void Texture::SetParameters(const XMLElement& element)
{
    XMLElement paramElem = element.GetChild();
    while (paramElem)
    {
        String name = paramElem.GetName();

        if (name == "address")
        {
            String coord = paramElem.GetAttributeLower("coord");
            if (coord.Length() >= 1)
            {
                TextureCoordinate coordIndex = (TextureCoordinate)(coord[0] - 'u');
                String mode = paramElem.GetAttributeLower("mode");
                SetAddressMode(coordIndex, (TextureAddressMode)GetStringListIndex(mode.CString(), addressModeNames, ADDRESS_WRAP));
            }
        }

        if (name == "border")
            SetBorderColor(paramElem.GetColor("color"));

        if (name == "filter")
        {
            String mode = paramElem.GetAttributeLower("mode");
            SetFilterMode((TextureFilterMode)GetStringListIndex(mode.CString(), filterModeNames, FILTER_DEFAULT));
        }

        if (name == "mipmap")
            SetNumLevels(paramElem.GetBool("enable") ? 0 : 1);

        if (name == "quality")
        {
            if (paramElem.HasAttribute("low"))
                SetMipsToSkip(QUALITY_LOW, paramElem.GetInt("low"));
            if (paramElem.HasAttribute("med"))
                SetMipsToSkip(QUALITY_MEDIUM, paramElem.GetInt("med"));
            if (paramElem.HasAttribute("medium"))
                SetMipsToSkip(QUALITY_MEDIUM, paramElem.GetInt("medium"));
            if (paramElem.HasAttribute("high"))
                SetMipsToSkip(QUALITY_HIGH, paramElem.GetInt("high"));
        }

        if (name == "srgb")
            SetSRGB(paramElem.GetBool("enable"));

        paramElem = paramElem.GetNext();
    }
}

bool SpriteSheet2D::EndLoadFromXMLFile()
{
    ResourceCache* cache = GetSubsystem<ResourceCache>();
    texture_ = cache->GetResource<Texture2D>(loadTextureName_);
    if (!texture_)
    {
        URHO3D_LOGERROR("Could not load texture " + loadTextureName_);
        loadXMLFile_.Reset();
        loadTextureName_.Clear();
        return false;
    }

    XMLElement rootElem = loadXMLFile_->GetRoot("TextureAtlas");
    XMLElement subTextureElem = rootElem.GetChild("SubTexture");
    while (subTextureElem)
    {
        String name = subTextureElem.GetAttribute("name");

        int x = subTextureElem.GetInt("x");
        int y = subTextureElem.GetInt("y");
        int width = subTextureElem.GetInt("width");
        int height = subTextureElem.GetInt("height");
        IntRect rectangle(x, y, x + width, y + height);

        Vector2 hotSpot(0.5f, 0.5f);
        IntVector2 offset(0, 0);
        if (subTextureElem.HasAttribute("frameWidth") && subTextureElem.HasAttribute("frameHeight"))
        {
            offset.x_ = subTextureElem.GetInt("frameX");
            offset.y_ = subTextureElem.GetInt("frameY");
            int frameWidth = subTextureElem.GetInt("frameWidth");
            int frameHeight = subTextureElem.GetInt("frameHeight");
            hotSpot.x_ = ((float)offset.x_ + frameWidth / 2) / width;
            hotSpot.y_ = 1.0f - ((float)offset.y_ + frameHeight / 2) / height;
        }

        DefineSprite(name, rectangle, hotSpot, offset);

        subTextureElem = subTextureElem.GetNext("SubTexture");
    }

    loadXMLFile_.Reset();
    loadTextureName_.Clear();
    return true;
}

VariantMap XMLElement::GetVariantMap() const
{
    VariantMap ret;

    XMLElement variantElem = GetChild("variant");
    while (variantElem)
    {
        // If this is a manually edited map, user can not be expected to calculate hashes manually. Also accept "name" attribute
        if (variantElem.HasAttribute("name"))
            ret[StringHash(variantElem.GetAttribute("name"))] = variantElem.GetVariant();
        else if (variantElem.HasAttribute("hash"))
            ret[StringHash(variantElem.GetUInt("hash"))] = variantElem.GetVariant();

        variantElem = variantElem.GetNext("variant");
    }

    return ret;
}

bool TmxFile2D::BeginLoad(Deserializer& source)
{
    if (GetName().Empty())
        SetName(source.GetName());

    loadXMLFile_ = new XMLFile(context_);
    if (!loadXMLFile_->Load(source))
    {
        URHO3D_LOGERROR("Load XML failed " + source.GetName());
        loadXMLFile_.Reset();
        return false;
    }

    XMLElement rootElem = loadXMLFile_->GetRoot("map");
    if (!rootElem)
    {
        URHO3D_LOGERROR("Invalid tmx file " + source.GetName());
        loadXMLFile_.Reset();
        return false;
    }

    // If we're async loading, request the texture now. Finish during EndLoad().
    if (GetAsyncLoadState() == ASYNC_LOADING)
    {
        for (XMLElement tileSetElem = rootElem.GetChild("tileset"); tileSetElem; tileSetElem = tileSetElem.GetNext("tileset"))
        {
            // Tile set defined in TSX file
            if (tileSetElem.HasAttribute("source"))
            {
                String source = tileSetElem.GetAttribute("source");
                SharedPtr<XMLFile> tsxXMLFile = LoadTSXFile(source);
                if (!tsxXMLFile)
                    return false;

                tsxXMLFiles_[source] = tsxXMLFile;

                String textureFilePath =
                    GetParentPath(GetName()) + tsxXMLFile->GetRoot("tileset").GetChild("image").GetAttribute("source");
                GetSubsystem<ResourceCache>()->BackgroundLoadResource<Texture2D>(textureFilePath, true, this);
            }
            else
            {
                String textureFilePath = GetParentPath(GetName()) + tileSetElem.GetChild("image").GetAttribute("source");
                GetSubsystem<ResourceCache>()->BackgroundLoadResource<Texture2D>(textureFilePath, true, this);
            }
        }

        for (XMLElement imageLayerElem = rootElem.GetChild("imagelayer"); imageLayerElem;
             imageLayerElem = imageLayerElem.GetNext("imagelayer"))
        {
            String textureFilePath = GetParentPath(GetName()) + imageLayerElem.GetChild("image").GetAttribute("source");
            GetSubsystem<ResourceCache>()->BackgroundLoadResource<Texture2D>(textureFilePath, true, this);
        }
    }

    return true;
}

void RenderTargetInfo::Load(const XMLElement& element)
{
    name_ = element.GetAttribute("name");
    tag_ = element.GetAttribute("tag");
    if (element.HasAttribute("enabled"))
        enabled_ = element.GetBool("enabled");
    
    String formatName = element.GetAttribute("format");
    format_ = Graphics::GetFormat(formatName);
    
    if (element.HasAttribute("filter"))
        filtered_ = element.GetBool("filter");
    
    if (element.HasAttribute("srgb"))
        sRGB_ = element.GetBool("srgb");
    
    if (element.HasAttribute("persistent"))
        persistent_ = element.GetBool("persistent");
    
    if (element.HasAttribute("size"))
        size_ = element.GetVector2("size");
    if (element.HasAttribute("sizedivisor"))
    {
        size_ = element.GetVector2("sizedivisor");
        sizeMode_ = SIZE_VIEWPORTDIVISOR;
    }
    else if (element.HasAttribute("rtsizedivisor"))
    {
        // Deprecated rtsizedivisor mode, acts the same as sizedivisor mode now
        LOGWARNING("Deprecated rtsizedivisor mode used in rendertarget definition");
        size_ = element.GetVector2("rtsizedivisor");
        sizeMode_ = SIZE_VIEWPORTDIVISOR;
    }
    else if (element.HasAttribute("sizemultiplier"))
    {
        size_ = element.GetVector2("sizemultiplier");
        sizeMode_ = SIZE_VIEWPORTMULTIPLIER;
    }
    
    if (element.HasAttribute("width"))
        size_.x_ = element.GetFloat("width");
    if (element.HasAttribute("height"))
        size_.y_ = element.GetFloat("height");
}

bool Material::BeginLoad(Deserializer& source)
{
    // In headless mode, do not actually load the material, just return success
    Graphics* graphics = GetSubsystem<Graphics>();
    if (!graphics)
        return true;

    loadXMLFile_ = new XMLFile(context_);
    if (loadXMLFile_->Load(source))
    {
        // If async loading, scan the XML content beforehand for technique & texture resources
        // and request them to also be loaded. Can not do anything else at this point
        if (GetAsyncLoadState() == ASYNC_LOADING)
        {
            ResourceCache* cache = GetSubsystem<ResourceCache>();
            XMLElement rootElem = loadXMLFile_->GetRoot();
            XMLElement techniqueElem = rootElem.GetChild("technique");
            while (techniqueElem)
            {
                cache->BackgroundLoadResource<Technique>(techniqueElem.GetAttribute("name"), true, this);
                techniqueElem = techniqueElem.GetNext("technique");
            }

            XMLElement textureElem = rootElem.GetChild("texture");
            while (textureElem)
            {
                String name = textureElem.GetAttribute("name");
                // Detect cube maps by file extension: they are defined by an XML file
                /// \todo Differentiate with 3D textures by actually reading the XML content
                if (GetExtension(name) == ".xml")
                {
                    #ifdef DESKTOP_GRAPHICS
                    TextureUnit unit = TU_DIFFUSE;
                    if (textureElem.HasAttribute("unit"))
                        unit = ParseTextureUnitName(textureElem.GetAttribute("unit"));
                    if (unit == TU_VOLUMEMAP)
                        cache->BackgroundLoadResource<Texture3D>(name, true, this);
                    else
                    #endif
                        cache->BackgroundLoadResource<TextureCube>(name, true, this);
                }
                else
                    cache->BackgroundLoadResource<Texture2D>(name, true, this);
                textureElem = textureElem.GetNext("texture");
            }
        }

        return true;
    }
    else
    {
        ResetToDefaults();
        loadXMLFile_.Reset();
        return false;
    }
}

void TmxLayer2D::LoadInfo(const XMLElement& element)
{
    name_ = element.GetAttribute("name");
    width_ = element.GetInt("width");
    height_ = element.GetInt("height");
    if (element.HasAttribute("visible"))
        visible_ = element.GetInt("visible") != 0;
    else
        visible_ = true;
}

void Board::LoadRecord()
{
    if (!GetSubsystem<FileSystem>()->FileExists(GetRecordsFileName()))
        return;
    XMLFile config(context_);
    config.Load(File(context_, GetRecordsFileName(), FILE_READ));
    XMLElement root = config.GetRoot();
    if (root.IsNull())
        return;

    if (root.HasAttribute("_1"))
        record_ = root.GetInt("_1");
}

bool TmxTileLayer2D::Load(const XMLElement& element, const TileMapInfo2D& info)
{
    LoadInfo(element);

    XMLElement dataElem = element.GetChild("data");
    if (!dataElem)
    {
        URHO3D_LOGERROR("Could not find data in layer");
        return false;
    }

    if (dataElem.HasAttribute("encoding") && dataElem.GetAttribute("encoding") != "xml")
    {
        URHO3D_LOGERROR("Encoding not support now");
        return false;
    }

    XMLElement tileElem = dataElem.GetChild("tile");
    tiles_.Resize((unsigned)(width_ * height_));

    for (int y = 0; y < height_; ++y)
    {
        for (int x = 0; x < width_; ++x)
        {
            if (!tileElem)
                return false;

            int gid = tileElem.GetInt("gid");
            if (gid > 0)
            {
                SharedPtr<Tile2D> tile(new Tile2D());
                tile->gid_ = gid;
                tile->sprite_ = tmxFile_->GetTileSprite(gid);
                tile->propertySet_ = tmxFile_->GetTilePropertySet(gid);
                tiles_[y * width_ + x] = tile;
            }

            tileElem = tileElem.GetNext("tile");
        }
    }

    if (element.HasChild("properties"))
        LoadPropertySet(element.GetChild("properties"));

    return true;
}

void Sound::LoadParameters()
{
    ResourceCache* cache = GetSubsystem<ResourceCache>();
    String xmlName = ReplaceExtension(GetName(), ".xml");
    
    if (!cache->Exists(xmlName))
        return;
    
    XMLFile* file = cache->GetResource<XMLFile>(xmlName);
    if (!file)
        return;
    
    XMLElement rootElem = file->GetRoot();
    XMLElement paramElem = rootElem.GetChild();
    
    while (paramElem)
    {
        String name = paramElem.GetName();
        
        if (name == "format" && !compressed_)
        {
            if (paramElem.HasAttribute("frequency"))
                frequency_ = paramElem.GetInt("frequency");
            if (paramElem.HasAttribute("sixteenbit"))
                sixteenBit_ = paramElem.GetBool("sixteenbit");
            if (paramElem.HasAttribute("16bit"))
                sixteenBit_ = paramElem.GetBool("16bit");
            if (paramElem.HasAttribute("stereo"))
                stereo_ = paramElem.GetBool("stereo");
        }
        
        if (name == "loop")
        {
            if (paramElem.HasAttribute("enable"))
                SetLooped(paramElem.GetBool("enable"));
            if (paramElem.HasAttribute("start") && paramElem.HasAttribute("end"))
                SetLoop(paramElem.GetInt("start"), paramElem.GetInt("end"));
        }
        
        paramElem = paramElem.GetNext();
    }
}

void Sound::LoadParameters()
{
    auto* cache = GetSubsystem<ResourceCache>();
    String xmlName = ReplaceExtension(GetName(), ".xml");

    SharedPtr<XMLFile> file(cache->GetTempResource<XMLFile>(xmlName, false));
    if (!file)
        return;

    XMLElement rootElem = file->GetRoot();
    LoadMetadataFromXML(rootElem);

    for (XMLElement paramElem = rootElem.GetChild(); paramElem; paramElem = paramElem.GetNext())
    {
        String name = paramElem.GetName();

        if (name == "format" && !compressed_)
        {
            if (paramElem.HasAttribute("frequency"))
                frequency_ = (unsigned)paramElem.GetInt("frequency");
            if (paramElem.HasAttribute("sixteenbit"))
                sixteenBit_ = paramElem.GetBool("sixteenbit");
            if (paramElem.HasAttribute("16bit"))
                sixteenBit_ = paramElem.GetBool("16bit");
            if (paramElem.HasAttribute("stereo"))
                stereo_ = paramElem.GetBool("stereo");
        }

        if (name == "loop")
        {
            if (paramElem.HasAttribute("enable"))
                SetLooped(paramElem.GetBool("enable"));
            if (paramElem.HasAttribute("start") && paramElem.HasAttribute("end"))
                SetLoop((unsigned)paramElem.GetInt("start"), (unsigned)paramElem.GetInt("end"));
        }
    }
}

bool Technique::BeginLoad(Deserializer& source)
{
    passes_.Clear();
    SetMemoryUse(sizeof(Technique));
    
    SharedPtr<XMLFile> xml(new XMLFile(context_));
    if (!xml->Load(source))
        return false;
    
    XMLElement rootElem = xml->GetRoot();
    if (rootElem.HasAttribute("sm3"))
        isSM3_ = rootElem.GetBool("sm3");
    
    String globalVS = rootElem.GetAttribute("vs");
    String globalPS = rootElem.GetAttribute("ps");
    String globalVSDefines = rootElem.GetAttribute("vsdefines");
    String globalPSDefines = rootElem.GetAttribute("psdefines");
    // End with space so that the pass-specific defines can be appended
    if (!globalVSDefines.Empty())
        globalVSDefines += ' ';
    if (!globalPSDefines.Empty())
        globalPSDefines += ' ';
    bool globalAlphaMask = false;
    if (rootElem.HasAttribute("alphamask"))
        globalAlphaMask = rootElem.GetBool("alphamask");
    
    unsigned numPasses = 0;
    
    XMLElement passElem = rootElem.GetChild("pass");
    while (passElem)
    {
        if (passElem.HasAttribute("name"))
        {
            StringHash nameHash(passElem.GetAttribute("name"));
            
            Pass* newPass = CreatePass(nameHash);
            ++numPasses;
            
            if (passElem.HasAttribute("sm3"))
                newPass->SetIsSM3(passElem.GetBool("sm3"));
            
            // Append global defines only when pass does not redefine the shader
            if (passElem.HasAttribute("vs"))
            {
                newPass->SetVertexShader(passElem.GetAttribute("vs"));
                newPass->SetVertexShaderDefines(passElem.GetAttribute("vsdefines"));
            }
            else
            {
                newPass->SetVertexShader(globalVS);
                newPass->SetVertexShaderDefines(globalVSDefines + passElem.GetAttribute("vsdefines"));
            }
            if (passElem.HasAttribute("ps"))
            {
                newPass->SetPixelShader(passElem.GetAttribute("ps"));
                newPass->SetPixelShaderDefines(passElem.GetAttribute("psdefines"));
            }
            else
            {
                newPass->SetPixelShader(globalPS);
                newPass->SetPixelShaderDefines(globalPSDefines + passElem.GetAttribute("psdefines"));
            }
            
            if (passElem.HasAttribute("lighting"))
            {
                String lighting = passElem.GetAttributeLower("lighting");
                newPass->SetLightingMode((PassLightingMode)GetStringListIndex(lighting.CString(), lightingModeNames,
                    LIGHTING_UNLIT));
            }
            
            if (passElem.HasAttribute("blend"))
            {
                String blend = passElem.GetAttributeLower("blend");
                newPass->SetBlendMode((BlendMode)GetStringListIndex(blend.CString(), blendModeNames, BLEND_REPLACE));
            }
            
            if (passElem.HasAttribute("depthtest"))
            {
                String depthTest = passElem.GetAttributeLower("depthtest");
                if (depthTest == "false")
                    newPass->SetDepthTestMode(CMP_ALWAYS);
                else
                    newPass->SetDepthTestMode((CompareMode)GetStringListIndex(depthTest.CString(), compareModeNames, CMP_LESS));
            }
            
            if (passElem.HasAttribute("depthwrite"))
                newPass->SetDepthWrite(passElem.GetBool("depthwrite"));
            
            if (passElem.HasAttribute("alphamask"))
                newPass->SetAlphaMask(passElem.GetBool("alphamask"));
            else
                newPass->SetAlphaMask(globalAlphaMask);
        }
        else
            LOGERROR("Missing pass name");
        
        passElem = passElem.GetNext("pass");
    }
    
    // Calculate memory use now
//.........这里部分代码省略.........