| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294 |
- -- extp.lua - 触摸系统模块
- --[[
- @module extp
- @summary 触摸系统拓展库
- @version 1.0
- @date 2025.09.17
- @author 江访
- @usage
- 核心业务逻辑为:
- 1、初始化触摸设备,支持多种触摸芯片
- 2、处理原始触摸数据并解析为各种手势事件
- 3、通过统一消息接口发布触摸事件
- 4、提供消息发布控制功能
- 5、提供滑动和长按阈值配置功能
- 支持的触摸事件类型包括:
- 1、RAW_DATA - 原始触摸数据
- 2、TOUCH_DOWN - 按下事件
- 3、MOVE_X - 水平移动
- 4、MOVE_Y - 垂直移动
- 5、SWIPE_LEFT - 向左滑动
- 6、SWIPE_RIGHT - 向右滑动
- 7、SWIPE_UP - 向上滑动
- 8、SWIPE_DOWN - 向下滑动
- 9、SINGLE_TAP - 单击
- 10、LONG_PRESS - 长按
- 本文件的对外接口有5个:
- 1、extp.init(args) -- 触摸设备初始化函数
- 2、extp.setPublishEnabled(msg_type, enabled) -- 设置消息发布状态
- 3、extp.getPublishEnabled(msg_type) -- 获取消息发布状态
- 4、extp.setSlideThreshold(threshold) -- 设置滑动判定阈值
- 5、extp.setLongPressThreshold(threshold) -- 设置长按判定阈值
- 所有触摸事件均通过sys.publish("baseTouchEvent", event_type, ...)发布
- ]]
- local extp = {}
- -- 触摸状态变量
- local state = "IDLE" -- 当前状态:IDLE(空闲), DOWN(按下), MOVE(移动)
- local touch_down_x = 0 -- 按下时的X坐标
- local touch_down_y = 0 -- 按下时的Y坐标
- local touch_down_time = 0 -- 按下时的时间戳
- local slide_threshold = 45 -- 滑动判定阈值(像素)
- local long_press_threshold = 500 -- 长按判定阈值(毫秒)
- local slide_direction = nil -- 滑动方向(用于MOVE状态)
- -- 消息发布控制表,默认全部打开
- local publish_control = {
- RAW_DATA = true, -- 原始触摸数据
- TOUCH_DOWN = true, -- 按下事件
- MOVE_X = true, -- 水平移动
- MOVE_Y = true, -- 垂直移动
- SWIPE_LEFT = true, -- 向左滑动
- SWIPE_RIGHT = true, -- 向右滑动
- SWIPE_UP = true, -- 向上滑动
- SWIPE_DOWN = true, -- 向下滑动
- SINGLE_TAP = true, -- 单击
- LONG_PRESS = true -- 长按
- }
- -- 定义支持的触摸芯片配置
- local tp_configs = {
- cst820 = { i2c_speed = i2c.FAST, tp_model = "cst820" },
- cst9220 = { i2c_speed = i2c.SLOW, tp_model = "cst9220" },
- gt9157 = { i2c_speed = i2c.FAST, tp_model = "gt9157" },
- jd9261t = { i2c_speed = i2c.FAST, tp_model = "jd9261t" },
- AirLCD_1001 = { i2c_speed = i2c.SLOW, tp_model = "gt911" },
- Air780EHM_LCD_3 = { i2c_speed = i2c.SLOW, tp_model = "gt911" },
- Air780EHM_LCD_4 = { i2c_speed = i2c.SLOW, tp_model = "gt911" }
- }
- -- 设置消息发布状态
- -- @param msg_type 消息类型 ("RAW_DATA", "TOUCH_DOWN", "MOVE_X", "MOVE_Y", "SWIPE_LEFT", "SWIPE_RIGHT", "SWIPE_UP", "SWIPE_DOWN", "SINGLE_TAP", "LONG_PRESS", 或 "all")
- -- @param enabled 是否启用 (true/false)
- -- @return boolean 操作是否成功
- function extp.setPublishEnabled(msg_type, enabled)
- if msg_type == "all" then
- for k, _ in pairs(publish_control) do
- publish_control[k] = enabled
- end
- log.info("extp", "所有消息发布", enabled and "启用" or "禁用")
- return true
- elseif publish_control[msg_type] ~= nil then
- publish_control[msg_type] = enabled
- log.info("extp", msg_type, "消息发布", enabled and "启用" or "禁用")
- return true
- else
- log.error("extp", "未知的消息类型:", msg_type)
- return false
- end
- end
- -- 获取消息发布状态
- -- @param msg_type 消息类型 ("RAW_DATA", "TOUCH_DOWN", "MOVE_X", "MOVE_Y", "SWIPE_LEFT", "SWIPE_RIGHT", "SWIPE_UP", "SWIPE_DOWN", "SINGLE_TAP", "LONG_PRESS")
- -- @return boolean|table 发布状态 (true/false) 或所有状态表(当msg_type为nil时)
- function extp.getPublishEnabled(msg_type)
- if msg_type == nil then
- return publish_control
- elseif publish_control[msg_type] ~= nil then
- return publish_control[msg_type]
- else
- log.error("extp", "未知的消息类型:", msg_type)
- return false
- end
- end
- -- 设置滑动判定阈值
- -- @param threshold number 滑动判定阈值(像素)
- -- @return boolean 操作是否成功
- function extp.setSlideThreshold(threshold)
- if type(threshold) == "number" and threshold > 0 then
- slide_threshold = threshold
- log.info("extp", "滑动判定阈值设置为:", threshold)
- return true
- else
- log.error("extp", "无效的滑动阈值:", threshold)
- return false
- end
- end
- -- 设置长按判定阈值
- -- @param threshold number 长按判定阈值(毫秒)
- -- @return boolean 操作是否成功
- function extp.setLongPressThreshold(threshold)
- if type(threshold) == "number" and threshold > 0 then
- long_press_threshold = threshold
- log.info("extp", "长按判定阈值设置为:", threshold)
- return true
- else
- log.error("extp", "无效的长按阈值:", threshold)
- return false
- end
- end
- -- 触摸回调函数
- -- 参数: tp_device-触摸设备对象, tp_data-触摸数据
- local function tp_callback(tp_device, tp_data)
- -- 发布原始数据(如果启用)
- if publish_control.RAW_DATA then
- sys.publish("TP", tp_device, tp_data) --当前消息
- -- sys.publish("baseTouchEvent", "RAW_DATA", moveX, 0) 需要适配此条消息
- end
- -- 兼容多种数据结构:数组[1]或直接单点表;字段名兼容 x/x_coordinate, y/y_coordinate
- local p = nil
- if type(tp_data) == "table" then
- p = tp_data[1] or tp_data
- end
- if type(p) ~= "table" then return end
- local event_type = p.event or p.type or p.evt
- local x = p.x or p.x_coordinate or 0
- local y = p.y or p.y_coordinate or 0
- local timestamp = p.timestamp or p.ts or 0
- if not event_type then return end
- if event_type == 2 then -- 抬手事件
- if state == "DOWN" or state == "MOVE" then
- local moveX = x - touch_down_x
- local moveY = y - touch_down_y
- if moveX < -slide_threshold then
- if publish_control.SWIPE_LEFT then
- sys.publish("baseTouchEvent", "SWIPE_LEFT", moveX, 0)
- end
- elseif moveX > slide_threshold then
- if publish_control.SWIPE_RIGHT then
- sys.publish("baseTouchEvent", "SWIPE_RIGHT", moveX, 0)
- end
- elseif moveY < -slide_threshold then
- if publish_control.SWIPE_UP then
- sys.publish("baseTouchEvent", "SWIPE_UP", 0, moveY)
- end
- elseif moveY > slide_threshold then
- if publish_control.SWIPE_DOWN then
- sys.publish("baseTouchEvent", "SWIPE_DOWN", 0, moveY)
- end
- else
- -- 计算按下时间
- local press_time = timestamp - touch_down_time
- -- 判断是单击还是长按
- if press_time < long_press_threshold then
- if publish_control.SINGLE_TAP then
- sys.publish("baseTouchEvent", "SINGLE_TAP", touch_down_x, touch_down_y)
- end
- else
- if publish_control.LONG_PRESS then
- sys.publish("baseTouchEvent", "LONG_PRESS", touch_down_x, touch_down_y)
- end
- end
- end
- state = "IDLE"
- end
- elseif event_type == 1 or event_type == 3 then -- 按下或移动事件
- if state == "IDLE" and event_type == 1 then
- -- 从空闲状态接收到按下事件
- state = "DOWN"
- touch_down_x = x
- touch_down_y = y
- touch_down_time = timestamp
- slide_direction = nil
- -- 发布按下事件
- if publish_control.TOUCH_DOWN then
- sys.publish("baseTouchEvent", "TOUCH_DOWN", x, y)
- end
- elseif state == "DOWN" and event_type == 3 then
- -- 在按下状态下接收到移动事件
- if math.abs(x - touch_down_x) >= slide_threshold or math.abs(y - touch_down_y) >= slide_threshold then
- state = "MOVE"
- -- 确定滑动方向
- if math.abs(x - touch_down_x) > math.abs(y - touch_down_y) then
- -- 水平滑动
- if x - touch_down_x < 0 then
- slide_direction = "LEFT"
- else
- slide_direction = "RIGHT"
- end
- else
- -- 垂直滑动
- if y - touch_down_y < 0 then
- slide_direction = "UP"
- else
- slide_direction = "DOWN"
- end
- end
- end
- elseif state == "MOVE" and event_type == 3 then
- -- 在移动状态下接收到移动事件
- -- 根据滑动方向发布相应的移动事件
- if slide_direction == "LEFT" or slide_direction == "RIGHT" then
- -- 水平滑动,发布MOVE_X事件
- if publish_control.MOVE_X then
- sys.publish("baseTouchEvent", "MOVE_X", x - touch_down_x, 0)
- end
- else
- -- 垂直滑动,发布MOVE_Y事件
- if publish_control.MOVE_Y then
- sys.publish("baseTouchEvent", "MOVE_Y", 0, y - touch_down_y)
- end
- end
- end
- end
- end
- -- 初始化触摸功能
- -- @param args table 初始化参数表,包含以下字段:
- -- TP_MODEL: string 触摸芯片型号 ("cst820", "cst9220", "gt9157", "jd9261t", "AirLCD_1001", "Air780EHM_LCD_3", "Air780EHM_LCD_4")
- -- i2c_id: number I2C总线ID
- -- pin_rst: number 复位引脚
- -- pin_int: number 中断引脚
- -- @return boolean 初始化是否成功
- function extp.init(args)
- if type(args) ~= "table" then
- log.error("extp", "参数必须为表")
- return false
- end
- -- 检查必要参数
- if not args.TP_MODEL then
- log.error("extp", "缺少必要参数: TP_MODEL")
- return false
- end
- local TP_MODEL, tp_i2c_id, tp_pin_rst, tp_pin_int = args.TP_MODEL, args.i2c_id, args.pin_rst, args.pin_int
- -- 检查是否支持该型号
- local config = tp_configs[TP_MODEL]
- if not config then
- log.error("extp", "不支持的触摸型号:", TP_MODEL)
- return false
- end
- -- 统一初始化流程
- if config.i2c_speed ~= nil then
- i2c.setup(tp_i2c_id, config.i2c_speed)
- end
- local tp_device = tp.init(config.tp_model, {port=tp_i2c_id, pin_rst=tp_pin_rst, pin_int=tp_pin_int}, tp_callback)
- if tp_device ~= nil then return true end
- -- 若硬件触摸初始化失败,尝试PC触摸回退
- log.warn("extp", "触摸初始化失败,尝试PC触摸回退")
- local ok_pc, dev_pc = pcall(tp.init, "pc", { port = 0 }, tp_callback)
- if ok_pc and dev_pc then
- log.info("extp", "PC触摸回退成功")
- return true
- end
- log.error("extp", "PC触摸回退失败")
- return false
- end
- return extp
|