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#344 improvements to text fields

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This commit is contained in:
Mikayla Fischler 2023-09-23 00:09:37 -04:00
parent 611b048cb4
commit d21604ea09
1 changed files with 26 additions and 22 deletions
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48
graphics/elements/form/text_field.lua
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@ -1,6 +1,7 @@
-- Text Value Entry Graphics Element
local util = require("scada-common.util")
local events = require("graphics.events")
local core = require("graphics.core")
local element = require("graphics.element")
@ -33,14 +34,13 @@ local function text_field(args)
-- set initial value
e.value = args.value or ""
local max_len = 1000 -- temporary
local max_len = args.max_len or e.frame.w
local frame_start = 1
local visible_text = e.value
local cursor_pos = string.len(visible_text) + 1
local function frame__update_visible()
visible_text = string.sub(e.value, frame_start, frame_start + math.min(string.len(e.value), args.width) - 1)
visible_text = string.sub(e.value, frame_start, frame_start + math.min(string.len(e.value), e.frame.w) - 1)
end
-- draw input
@ -89,14 +89,14 @@ local function text_field(args)
local function frame__try_lshift()
if frame_start > 1 then
frame_start = frame_start - 1
show()
return true
end
end
local function frame__try_rshift()
if (frame_start + args.width - 1) < string.len(e.value) then
if (frame_start + e.frame.w - 1) < string.len(e.value) then
frame_start = frame_start + 1
show()
return true
end
end
@ -104,12 +104,14 @@ local function text_field(args)
---@param event mouse_interaction mouse event
function e.handle_mouse(event)
-- only handle if on an increment or decrement arrow
if e.enabled and core.events.was_clicked(event.type) then
e.req_focus()
if e.enabled then
if core.events.was_clicked(event.type) then
e.req_focus()
if event.type == MOUSE_CLICK.UP then
cursor_pos = math.min(event.current.x, string.len(visible_text) + 1)
show()
if event.type == MOUSE_CLICK.UP then
cursor_pos = math.min(event.current.x, string.len(visible_text) + 1)
show()
end
end
end
end
@ -123,25 +125,27 @@ local function text_field(args)
if cursor_pos <= string.len(visible_text) then
cursor_pos = cursor_pos + 1
show()
else frame__try_rshift() end
elseif frame__try_rshift() then show() end
elseif event.type == KEY_CLICK.DOWN or event.type == KEY_CLICK.HELD then
if (event.key == keys.backspace or event.key == keys.delete) then
-- remove charcter at cursor
e.value = string.sub(e.value, 1, frame_start + cursor_pos - 3) .. string.sub(e.value, frame_start + cursor_pos - 1, string.len(e.value))
if cursor_pos > 1 then
cursor_pos = cursor_pos - 1
show()
else frame__try_lshift() end
-- remove charcter at cursor if there is anything to remove
if frame_start + cursor_pos > 2 then
e.value = string.sub(e.value, 1, frame_start + cursor_pos - 3) .. string.sub(e.value, frame_start + cursor_pos - 1, string.len(e.value))
if cursor_pos > 1 then
cursor_pos = cursor_pos - 1
show()
elseif frame__try_lshift() then show() end
end
elseif event.key == keys.left then
if cursor_pos > 1 then
cursor_pos = cursor_pos - 1
show()
else frame__try_lshift() end
elseif frame__try_lshift() then show() end
elseif event.key == keys.right then
if cursor_pos <= string.len(visible_text) then
cursor_pos = cursor_pos + 1
show()
else frame__try_rshift() end
elseif frame__try_rshift() then show() end
end
end
end
@ -149,8 +153,8 @@ local function text_field(args)
-- set the value
---@param val string string to show
function e.set_value(val)
e.value = val
frame_start = 1 + math.max(0, string.len(val) - args.width)
e.value = string.sub(val, 1, math.min(max_len, string.len(val)))
frame_start = 1 + math.max(0, string.len(val) - e.frame.w)
frame__update_visible()
cursor_pos = string.len(visible_text) + 1
show()