公共父界面
## 容器分区设计
此项目的内容建立在两个容器之上。左边容器放置轮播图，使用定时器刷新内容
右方容器放置各个页面的内容，方便清空处理（切换页面通过清空容器，重新放新的内容实现）
```lua
_G.parent_cont = cont.create(lvgl.scr_act(), {
W = LCD_W,
H = LCD_H,
click = false,
style = {border = {width = 0}}
})
_G.left_cont = cont.create(parent_cont, {
W = LCD_W / 3,
H = LCD_H,
align = lvgl.ALIGN_IN_LEFT_MID,
click = false,
style = {border = {width = 0}}
})
img_ = img.create(left_cont, {
-- align = lvgl.ALIGN_IN_LEFT_MID,
src = "/lua/l2.jpg"
})
_G.right_cont = cont.create(parent_cont, {
W = LCD_W * 2 / 3,
H = LCD_H,
align = lvgl.ALIGN_IN_RIGHT_MID,
click = false,
style = {border = {width = 0}, bg = {color = 0xccfcfc}}
})
```
## 所有页面的返回，默认回调，回到主页面
```lua
_G.back_home = function(obj, event)
if (event == lvgl.EVENT_CLICKED) then home_page.create() end
end
```
## 定时器控制轮播图
```lua
img_data = {"l1.jpg", "l2.jpg", "l3.jpg"}
sys.timerLoopStart(function()
local index = os.date("*t").sec % 3 + 1
lvgl.img_set_src(img_, "/lua/l" .. index .. ".jpg")
end, 2000)
```
## 引入其他页面，调用create即可创建
```lua
require "home_page"
require "pick_up_page"
require "choose_page"
require "help_page"
-- help_page.create()
home_page.create()
-- pick_up_page.create()
-- choose_page.create()
```
##
```lua
create_msg = function(p, v)
back_btn = btn.create(p, {
W = 124,
H = 48,
align = lvgl.ALIGN_IN_BOTTOM_MID,
align_y = -10,
event = function(obj, event)
if (event == lvgl.EVENT_CLICKED) then
lvgl.obj_del(shadow_cont)
end
end,
label = {
text = "返回",
style = {
text = {
font = style.font24,
color = 0xffffff,
letter_space = 20,
line_space = 20
}
}
},
style = {
border = {width = 0},
shadow = {spread = 10, color = 0xff00f0},
bg = {radius = 50, color = 0xff9999}
}
})
tips_label = label.create(p, {
text = v.tips_label,
align_to = back_btn,
align = lvgl.ALIGN_OUT_TOP_MID,
align_y = -10,
style = {text = {font = style.font24}}
})
state_label = label.create(p, {
text = v.state_label,
align_to = tips_label,
align = lvgl.ALIGN_OUT_TOP_MID,
align_y = -10,
style = {text = {font = style.font36}}
})
state_img = img.create(p, {
align_to = state_label,
align = lvgl.ALIGN_OUT_TOP_MID,
align_y = -30,
style = {recolor = 0xff0000},
src = "/lua/" .. v.src .. ".bin"
})
end
```