使用xlue实现tips

function AddWindowTip(tippedObj, text, callback)

    local function showTipsFunc(tippedObj, x, y)
        -- 创建tips窗口
        local hostwndId = "TipsHelper.TipsHostWnd.Instance." .. tippedObj:GetID()
        local objtreeId = "TipsHelper.TipsTree.Instance." .. tippedObj:GetID()
        local hostwndTemplateId = "TipsWndTemplate"
        local objtreeTemplateId = "TipsTreeTemplate"

        local hostwndManager = XLGetObject("Xunlei.UIEngine.HostWndManager")
        local hostwnd = hostwndManager:GetHostWnd(hostwndId)
        if hostwnd then
            local objtree = hostwnd:GetBindUIObjectTree()
            if objtree then
                hostwnd:UnbindUIObjectTree()
                local objtreeManager = XLGetObject("Xunlei.UIEngine.TreeManager")
                objtreeManager:DestroyTree(objtree)
            end
            hostwndManager:RemoveHostWnd(hostwndId)
        end
        local templateManager = XLGetObject("Xunlei.UIEngine.TemplateManager")
        local wndTemplate = templateManager:GetTemplate(hostwndTemplateId, "HostWndTemplate")
        if not wndTemplate then
            return
        end
        local hostwnd = wndTemplate:CreateInstance(hostwndId)
        if not hostwnd then
            return
        end
        local objtreeTemplate = templateManager:GetTemplate(objtreeTemplateId, "ObjectTreeTemplate")
        local objtree = objtreeTemplate:CreateInstance(objtreeId)
        if not objtree then
            return
        end
        hostwnd:BindUIObjectTree(objtree)
        hostwnd:Create()

        -- 设定text
        local rootObj = objtree:GetRootObject()
        local textObj = objtree:GetUIObject("text")
        textObj:SetText(text)
        local width, height = textObj:GetTextExtent()
        textObj:SetObjPos(4,3,width,height)
        width,height = width + 8, height + 6
        rootObj:SetObjPos(0,0,width+8,height+6)
        
        -- 移动窗口位置
        local tippedOwner = tippedObj:GetOwner()
        local tippedHostWnd = tippedOwner:GetBindHostWnd()
        local l,t,r,b = tippedObj:GetObjPos()
        local left = l+(r-l-width)/2
        local top = b
        left,top = tippedHostWnd:HostWndPtToScreenPt(left,top)
        hostwnd:Move(left,top,width,height)
        
        return rootObj
    end
    local function hideTipsFunc(tippedObj)
        -- 销毁tips窗口
        local hostwndId = "TipsHelper.TipsHostWnd.Instance." .. tippedObj:GetID()

        local hostwndManager = XLGetObject("Xunlei.UIEngine.HostWndManager")
        local hostwnd = hostwndManager:GetHostWnd(hostwndId)
        if not hostwnd then
            return
        end
        
        local objtree = hostwnd:GetBindUIObjectTree()
        if objtree then
            hostwnd:UnbindUIObjectTree()
            local objtreeManager = XLGetObject("Xunlei.UIEngine.TreeManager")
            objtreeManager:DestroyTree(objtree)
        end
        hostwndManager:RemoveHostWnd(hostwndId)
        
        return true
    end
    
    -- state: tip 的状态, hide隐藏,showing正在显示,show显示,hiding正在隐藏,enter进入tips中
    local state = "hide"    -- 使用状态控制 tips 在各个状态间转换
    tippedObj:AttachListener("OnMouseMove", true, function(obj, x, y, flags)
        if state == "hide" then
            state = "showing"
            local timerMgr = XLGetObject("Xunlei.UIEngine.TimerManager")
            timerMgr:SetOnceTimer(function()
                if state == "showing" then
                    local tipsObj = showTipsFunc(obj, x, y)
                    if tipsObj then
                        state = "show"
                        
                        --[[ 这段代码，使得移动到弹出的窗口上时，窗口不会被隐藏
                        tipsObj:AttachListener("OnMouseMove", true, function()
                            if state == "hiding" then
                                state = "enter"
                            end
                        end)
                        tipsObj:AttachListener("OnMouseLeave", true, function()
                            if state == "enter" then
                                state = "hiding"
                                local timerMgr = XLGetObject("Xunlei.UIEngine.TimerManager")
                                timerMgr:SetOnceTimer(function()
                                    if state == "hiding" then
                                        if hideTipsFunc(obj) then
                                            state = "hide"
                                            if callback and type(callback) == "function" then
                                                callback(tippedObj, false)
                                            end
                                        end
                                    end
                                end, 300)
                            end
                        end)
                        --]]
                        
                        if callback and type(callback) == "function" then
                            callback(obj, true)
                        end
                    end
                end
            end, 300)
        elseif state == "hiding" then
            state = "show"
        end
    end)
    tippedObj:AttachListener("OnMouseLeave", true, function(obj, x, y, flags)
        if state == "show" then
            state = "hiding"
            local timerMgr = XLGetObject("Xunlei.UIEngine.TimerManager")
            timerMgr:SetOnceTimer(function()
                if state == "hiding" then
                    if hideTipsFunc(obj) then
                        state = "hide"
                        if callback and type(callback) == "function" then
                            callback(tippedObj, false)
                        end
                    end
                end
            end, 300)
        elseif state == "showing" then
            state = "hide"
        end
    end)
    
end