--[[
    @describtion:特殊飘字视图层
    @author:huangjingpei
]]

SysInfoSpecialView = SysInfoSpecialView or BaseClass()
local SysInfoSpecialView = SysInfoSpecialView

SysInfoSpecialView.MAX_MSG_COUNT = 20
SysInfoSpecialView.WIDTH = 749
SysInfoSpecialView.HEIGHT = 62
SysInfoSpecialView.SHOW_MAX_COUNT = 3

function SysInfoSpecialView:__init()
    self.font_name = "sysinfo2"
    self.records = Array.New()
    self.msg_list = Array.New()

    self.total_time = 1
    self.play_step = 0.3
    self.last_time = 0

    self.state_time1 = 1
    self.state_time2 = 3
    self.fout_out_time = 0.8
    self.speed = 90.0 / self.state_time1

    self.message_wnd_list = {}
    self.index = 0

    local ui_load_finish = function()
        self:CreateMessageContainer()
    end
    GlobalEventSystem:Bind(CommonUIEventType.DEFAULT_UI_RES_LOADED, ui_load_finish)
end

function SysInfoSpecialView:__delete()
    if self.root_wnd then
        self.root_wnd:DeleteMe()
        self.root_wnd = nil
    end
end

--创建消息容器
function SysInfoSpecialView:CreateMessageContainer()
    local screen_width = HandleRenderUnit:getTargetWidth()
    local screen_height = HandleRenderUnit:getTargetHeight()

    self.root_wnd = Game.UI:CreateWindowByTypeNoName(UIType.Box, "", "ControlLayer")
    self.root_wnd:SetVector2(WidgetProperty.Size, Game.Vector2(SysInfoSpecialView.WIDTH/1280*screen_width, SysInfoSpecialView.HEIGHT/720*screen_height))
    self.root_wnd:SetBool(WidgetProperty.NeedMouse, false)
    self.root_wnd:SetInt(WidgetProperty.Align, Align.Center)

    self.root_wnd:SetVectorValue(WidgetProperty.Position, (screen_width - SysInfoSpecialView.WIDTH/1280*screen_width)/2, (screen_height - SysInfoSpecialView.HEIGHT/720*screen_height)/2 - 35/720*screen_height)

    for index = 0, SysInfoSpecialView.MAX_MSG_COUNT do
        local wnd = self:CreateLabel()
        self.message_wnd_list[index] = wnd
    end
end

--创建消息组件
function SysInfoSpecialView:CreateLabel()
    local box = {}
    box.bg = self.root_wnd:CreateChildNoName(UIType.ImageBox, "")
    box.bg:SetString(ImageBoxProperty.Source, "comp:xx_special_msg_bg")
    box.bg:SetFloat(WidgetProperty.Alpha, 0.0)
    box.bg:SetBool(WidgetProperty.NeedMouse, false)

    box.wnd = box.bg:CreateChildNoName(UIType.Label, "Label3")
    box.wnd:SetVector2(WidgetProperty.Size, Game.Vector2(SysInfoSpecialView.WIDTH, 32))
    box.wnd:SetVectorValue(WidgetProperty.Position, 0, 14)
    box.wnd:SetInt(TextBoxProperty.TextAlign, bit.bor(Align.Center, Align.VCenter))
    box.wnd:SetInt(TextBoxProperty.FontSize, 24)
    box.wnd:SetBool(WidgetProperty.NeedMouse, false)
    return box
end

function SysInfoSpecialView:CreateNewItem(content)
    if self.index >= SysInfoSpecialView.MAX_MSG_COUNT then
        self.index = 0
    end

    local box = self.message_wnd_list[self.index]
    if box ~= nil then
        box.wnd:SetString(WindowProperty.Label, content)
        box.bg:SetFloat(WidgetProperty.Alpha, 0.0)
    end

    self.index = self.index + 1
    return box
end

function SysInfoSpecialView:CreateFoutAnim(wnd)
    local orign_pos_y = wnd:GetVector2(WidgetProperty.Position).y
    local wnd_alpha_frames = Game.KeyFrameSet()
    wnd_alpha_frames:AddTimeValue(0, 0)
    wnd_alpha_frames:AddTimeValue(self.fout_out_time, 1)

    local function WindowScreenCenterEnd()
        if wnd then
            wnd:SetFloat(WidgetProperty.Alpha, 0)
        end
    end

    local function WindowAlphaSetterCreator(anmi_val)
        if not wnd or wnd:IsNull() then
            return true
        end
        
        local anmi_num = anmi_val:GetAsNumeric()
        local value = 1 - anmi_num
        local pos = wnd:GetVector2(WidgetProperty.Position)
        local pos_y = 70 * anmi_num
        wnd:SetVectorValue(WidgetProperty.Position, pos.x, orign_pos_y - pos_y)
        wnd:SetFloat(WidgetProperty.Alpha, value)
        return false
    end

    Game.Animation:CreateKeyAnim(WindowAlphaSetterCreator, wnd_alpha_frames, false, true, 
            WindowScreenCenterEnd)
end

function SysInfoSpecialView:Update(elapse_time)
    self.total_time = self.total_time + elapse_time
    local count = self.msg_list:GetSize()

    if count > 0 then
        if self.total_time > self.play_step then
            local content = self.msg_list:PopFront()
            if content ~= nil then
                self.total_time = 0.0
                local node = {}
                node.wnd = self:CreateNewItem(content)
                node.time = 0
                self.records:PushBack(node)
            end
        end
    end

    local record_length = self.records:GetSize()
    if record_length == 0 then
        return
    end

    for i = 0, record_length - 1 do
        local node = self.records:Get(i)
        local wnd = node.wnd.bg
        node.time = node.time + elapse_time
        local pos = wnd:GetVector2(WidgetProperty.Position)
        if node.time < self.state_time1 then    
            local percent = node.time / self.state_time1
            pos.y = 90 - self.speed * node.time
            wnd:SetVector2(WidgetProperty.Position, pos)
            wnd:SetFloat(WidgetProperty.Alpha, percent)
        elseif node.time <= self.state_time2 then
            local end_y = -(record_length - 1 - i) * (SysInfoSpecialView.HEIGHT + 3)
            node.up_time = 0.4 + (record_length - 1 - i)*0.3
            local speed = end_y / node.up_time * elapse_time
            pos.y = pos.y + speed
            if pos.y <= end_y then pos.y = end_y end
            wnd:SetVector2(WidgetProperty.Position, pos)
            wnd:SetFloat(WidgetProperty.Alpha, 1)
        end
    end

    if record_length > 0 then
        local node = self.records:Get(0)
        if node.time > self.state_time2 then
            self.records:PopFront()
            self:CreateFoutAnim(node.wnd.bg)
            return
        end
    end

    if record_length > SysInfoSpecialView.SHOW_MAX_COUNT then
        local node = self.records:Get(0)
        if node.time and node.up_time then 
            if node.time > node.up_time + 1 then 
                self.records:PopFront()
                self:CreateFoutAnim(node.wnd.bg)
                return 
            end
        end
    end
end

function SysInfoSpecialView:AppendMessage(content)
    if not self.root_wnd then
        return
    end

    local cur_time = TimeUtil:getClientTime()
    local count = self.msg_list:GetSize()

    if count > 0 then           --判断现在显示的是否和要显示的内容一致，确定是否要显示
        local msg = self.msg_list:Get(count - 1)
        if msg ~= nil and msg == content then
            local diff = cur_time - self.last_time
            if diff < self.play_step then
                return
            end
        end
    end

    self.last_time = cur_time
    if count > SysInfoSpecialView.MAX_MSG_COUNT then
        self.msg_list:PopFront()
    end
    self.msg_list:PushBack(content)
end