forked from len0rd/rockbox
20cd89908d
updated example script and renamed some functions as well fixed bug in printtable cursor position if greater than maxlines for the screen would reset to item 1 now we move the list start and select it (and try to center it on the screen) fixed a few bugs in the add_menu code Change-Id: I01dead0481ef2e925af8b4cc6c14e36c2859dbba
409 lines
14 KiB
Lua
409 lines
14 KiB
Lua
--[[
|
|
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2017 William Wilgus
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
]]
|
|
if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
|
|
|
|
local _clr = require("color")
|
|
local _print = require("print")
|
|
local _timer = require("timer")
|
|
local BUTTON = require("menubuttons")
|
|
local sb_width = 5
|
|
|
|
-- clamps value to >= min and <= max
|
|
local function clamp(iVal, iMin, iMax)
|
|
if iMin > iMax then
|
|
local swap = iMin
|
|
iMin, iMax = iMax, swap
|
|
end
|
|
|
|
if iVal < iMin then
|
|
return iMin
|
|
elseif iVal < iMax then
|
|
return iVal
|
|
end
|
|
|
|
return iMax
|
|
end
|
|
|
|
--------------------------------------------------------------------------------
|
|
--[[ cursor style button routine
|
|
-- left / right are x, xi is increment xir is increment when repeat
|
|
-- up / down are y, yi is increment yir is increment when repeat
|
|
-- cancel is returned as 0,1
|
|
-- select as 0, 1, 2, 3 (none, pressed, repeat, relesed)
|
|
-- x_chg and y_chg are the amount x or y changed
|
|
-- timeout == nil or -1 loop waits indefinitely till button is pressed
|
|
-- time since last button press is returned in ticks..
|
|
-- make xi, xir, yi, yir negative to flip direction...
|
|
]]
|
|
local function dpad(x, xi, xir, y, yi, yir, timeout, overflow, selected)
|
|
local scroll_is_fixed = overflow ~= "manual"
|
|
_timer("dpad") -- start a persistant timer; keeps time between button events
|
|
if timeout == nil then timeout = -1 end
|
|
local cancel, select = 0, 0
|
|
local x_chg, y_chg = 0, 0
|
|
local button
|
|
while true do
|
|
button = rb.get_plugin_action(timeout)
|
|
|
|
if button == BUTTON.CANCEL then
|
|
cancel = 1
|
|
break;
|
|
elseif button == BUTTON.EXIT then
|
|
cancel = 1
|
|
break;
|
|
elseif button == BUTTON.SEL then
|
|
select = 1
|
|
timeout = timeout + 1
|
|
elseif button == BUTTON.SELR then
|
|
select = 2
|
|
timeout = timeout + 1
|
|
elseif button == BUTTON.SELREL then
|
|
select = -1
|
|
timeout = timeout + 1
|
|
elseif button == BUTTON.LEFT then
|
|
x_chg = x_chg - xi
|
|
if scroll_is_fixed then
|
|
cancel = 1
|
|
break;
|
|
end
|
|
elseif button == BUTTON.LEFTR then
|
|
x_chg = x_chg - xir
|
|
elseif button == BUTTON.RIGHT then
|
|
x_chg = x_chg + xi
|
|
if scroll_is_fixed then
|
|
select = 1
|
|
timeout = timeout + 1
|
|
end
|
|
elseif button == BUTTON.RIGHTR then
|
|
x_chg = x_chg + xir
|
|
elseif button == BUTTON.UP then
|
|
y_chg = y_chg + yi
|
|
elseif button == BUTTON.UPR then
|
|
y_chg = y_chg + yir
|
|
elseif button == BUTTON.DOWN then
|
|
y_chg = y_chg - yi
|
|
elseif button == BUTTON.DOWNR then
|
|
y_chg = y_chg - yir
|
|
elseif timeout >= 0 then--and rb.button_queue_count() < 1 then
|
|
break;
|
|
end
|
|
|
|
if x_chg ~= 0 or y_chg ~= 0 then
|
|
timeout = timeout + 1
|
|
end
|
|
end
|
|
|
|
x = x + x_chg
|
|
y = y + y_chg
|
|
|
|
return cancel, select, x_chg, x, y_chg, y, _timer.check("dpad", true)
|
|
end -- dpad
|
|
|
|
|
|
|
|
--------------------------------------------------------------------------------
|
|
--[[ prints a scrollable table to the screen;
|
|
-- requires a contiguous table with only strings;
|
|
-- 1st item in table is the title if hasheader == true
|
|
-- returns select item indice if NOT m_sel..
|
|
-- if m_sel == true a table of selected indices are returned ]]
|
|
--------------------------------------------------------------------------------
|
|
-- SECOND MODE OF OPERATION -- if co_routine is defined...
|
|
-- prints values returned from a resumable factory in a coroutine this allows
|
|
-- very large files etc to be displayed.. the downside is it takes time
|
|
-- to load data when scrolling also NO multiple selection is allowed
|
|
-- table is passed along with the final count t_count
|
|
--------------------------------------------------------------------------------
|
|
|
|
function print_table(t, t_count, settings)
|
|
-- (table, t_count, {hasheader, wrap, m_sel, start, curpos, justify, co_routine})
|
|
|
|
if type(t) ~= "table" then
|
|
rb.splash(rb.HZ * 5, "table expected got ".. type(t))
|
|
return
|
|
end
|
|
|
|
local wrap, justify, start, curpos, co_routine, hasheader, m_sel
|
|
local header_fgc, header_bgc, item_fgc, item_bgc, item_selc
|
|
local table_linedesc, drawsep, overflow, dpad_fn
|
|
do
|
|
local s = settings or _print.get_settings()
|
|
wrap, justify = s.wrap, s.justify
|
|
start, curpos = s.start, s.curpos
|
|
co_routine = s.co_routine
|
|
hasheader = s.hasheader
|
|
drawsep = s.drawsep
|
|
sb_width = s.sb_width or sb_width
|
|
m_sel = false
|
|
table_linedesc = s.linedesc
|
|
dpad_fn = s.dpad_fn
|
|
if type(dpad_fn) ~= "function" then dpad_fn = dpad end
|
|
|
|
if co_routine == nil then
|
|
--no multi select in incremental mode
|
|
m_sel = s.msel
|
|
end
|
|
overflow = s.ovfl or "auto"
|
|
header_fgc = s.hfgc or _clr.set( 0, 000, 000, 000)
|
|
header_bgc = s.hbgc or _clr.set(-1, 255, 255, 255)
|
|
item_fgc = s.ifgc or _clr.set(-1, 000, 255, 060)
|
|
item_bgc = s.ibgc or _clr.set( 0, 000, 000, 000)
|
|
item_selc = s.iselc or _clr.set( 1, 000, 200, 100)
|
|
end
|
|
|
|
local table_p, line, maxline
|
|
|
|
local function set_vsb() end -- forward declaration; initialized below
|
|
|
|
local function init_position(acc_ticks, acc_steps)
|
|
if not acc_ticks then acc_ticks = 15 end-- accelerate scroll every this many ticks
|
|
if not acc_steps then acc_steps = 5 end -- default steps for an accelerated scroll
|
|
|
|
return {row = 1, row_scrl= acc_steps,
|
|
col = 0, col_scrl = acc_steps,
|
|
vcursor = 1, vcursor_min = 1,
|
|
acc_ticks = acc_ticks,
|
|
acc_steps = acc_steps}
|
|
end
|
|
|
|
local function set_accel(time, scrl, t_p)
|
|
if time < t_p.acc_ticks then -- accelerate scroll
|
|
scrl = scrl + 1
|
|
else
|
|
scrl = t_p.acc_steps
|
|
end
|
|
return scrl
|
|
end
|
|
|
|
--adds or removes \0 from end of table entry to mark selected items
|
|
local function select_item(item)
|
|
if item < 1 then item = 1 end
|
|
if not t[item] then return end
|
|
if t[item]:sub(-1) == "\0" then
|
|
t[item] = t[item]:sub(1, -2) -- de-select
|
|
else
|
|
t[item] = t[item] .. "\0" -- select
|
|
end
|
|
end
|
|
|
|
-- displays header text at top
|
|
local function disp_header(hstr)
|
|
local header = header or hstr
|
|
local opts = _print.opt.get() -- save to restore settings
|
|
_print.opt.overflow("auto") -- don't scroll header; colors change
|
|
_print.opt.color(header_fgc, header_bgc)
|
|
_print.opt.line(1)
|
|
|
|
rb.set_viewport(_print.opt.get(true))
|
|
_print.f()
|
|
_print.f("%h", tostring(header)) --hack to signal header
|
|
|
|
_print.opt.set(opts) -- restore settings
|
|
_print.opt.line(2)
|
|
rb.set_viewport(opts)
|
|
opts = nil
|
|
return 2
|
|
end
|
|
|
|
-- gets user input to select items, quit, scroll
|
|
local function get_input(t_p)
|
|
set_vsb(t_p.row + t_p.vcursor - 1)--t_p.row)
|
|
rb.lcd_update()
|
|
|
|
local quit, select, x_chg, xi, y_chg, yi, timeb =
|
|
dpad_fn(t_p.col, -1, -t_p.col_scrl, t_p.row, -1, -t_p.row_scrl,
|
|
nil, overflow, (t_p.row + t_p.vcursor - 1))
|
|
|
|
t_p.vcursor = t_p.vcursor + y_chg
|
|
|
|
if t_p.vcursor > maxline or t_p.vcursor < t_p.vcursor_min then
|
|
t_p.row = yi
|
|
end
|
|
|
|
if wrap == true and (y_chg == 1 or y_chg == -1) then
|
|
|
|
-- wraps list, stops at end if accelerated
|
|
if t_p.row < t_p.vcursor_min - 1 then
|
|
t_p.row = t_count - maxline + 1
|
|
t_p.vcursor = maxline
|
|
elseif t_p.row + maxline - 1 > t_count then
|
|
t_p.row, t_p.vcursor = t_p.vcursor_min - 1, t_p.vcursor_min - 1
|
|
end
|
|
end
|
|
|
|
t_p.row = clamp(t_p.row, 1, math.max(t_count - maxline + 1, 1))
|
|
t_p.vcursor = clamp(t_p.vcursor, t_p.vcursor_min, maxline)
|
|
|
|
if x_chg ~= 0 then
|
|
|
|
if x_chg ~= 1 and x_chg ~= -1 then --stop at the center if accelerated
|
|
if (t_p.col <= 0 and xi > 0) or (t_p.col >= 0 and xi < 0) then
|
|
xi = 0
|
|
end
|
|
end
|
|
t_p.col = xi
|
|
|
|
t_p.col_scrl = set_accel(timeb, t_p.col_scrl, t_p)
|
|
|
|
elseif y_chg ~= 0 then
|
|
--t_p.col = 0 -- reset column to the beginning
|
|
_print.clear()
|
|
_print.opt.sel_line(t_p.vcursor)
|
|
|
|
t_p.row_scrl = set_accel(timeb, t_p.row_scrl, t_p)
|
|
|
|
end
|
|
|
|
if select > 0 and timeb > 15 then --select may be sent multiple times
|
|
if m_sel == true then
|
|
select_item(t_p.row + t_p.vcursor - 1)
|
|
else
|
|
return -1, 0, 0, (t_p.row + t_p.vcursor - 1)
|
|
end
|
|
end
|
|
if quit > 0 then return -2, 0, 0, 0 end
|
|
return t_p.row, x_chg, y_chg, 0
|
|
end
|
|
|
|
-- displays the actual table
|
|
local function display_table(table_p, col_c, row_c, sel)
|
|
local i = table_p.row
|
|
while i >= 1 and i <= t_count do
|
|
|
|
-- only print if beginning or user scrolled up/down
|
|
if row_c ~= 0 then
|
|
|
|
if t[i] == nil and co_routine then
|
|
--value has been garbage collected or not created yet
|
|
coroutine.resume(co_routine, i)
|
|
end
|
|
|
|
if t[i] == nil then
|
|
rb.splash(1, string.format("ERROR %d is nil", i))
|
|
t[i] = "???"
|
|
if rb.get_plugin_action(10) == BUTTON.CANCEL then return 0 end
|
|
end
|
|
|
|
if m_sel == true and t[i]:sub(-1) == "\0" then
|
|
_print.opt.sel_line(line)
|
|
end
|
|
|
|
if i == 1 and hasheader == true then
|
|
line = disp_header(t[1])
|
|
else
|
|
line = _print.f("%s", tostring(t[i]))
|
|
end
|
|
|
|
end
|
|
|
|
i = i + 1 -- important!
|
|
|
|
if line == 1 or i > t_count or col_c ~= 0 then
|
|
_print.opt.column(table_p.col)
|
|
i, col_c, row_c, sel = get_input(table_p)
|
|
end
|
|
|
|
rb.button_clear_queue() -- keep the button queue from overflowing
|
|
end
|
|
rb.lcd_scroll_stop()
|
|
return sel
|
|
end -- display_table
|
|
--============================================================================--
|
|
|
|
_print.opt.defaults()
|
|
_print.opt.autoupdate(false)
|
|
_print.opt.color(item_fgc, item_bgc, item_selc)
|
|
|
|
table_p = init_position(15, 5)
|
|
line, maxline = _print.opt.area(5, 1, rb.LCD_WIDTH - 10 - sb_width, rb.LCD_HEIGHT - 2)
|
|
|
|
if curpos > maxline then
|
|
local c = maxline / 2
|
|
start = (start or 1) + curpos - maxline
|
|
curpos = maxline
|
|
while start + maxline <= t_count and curpos > c do
|
|
curpos = curpos - 1
|
|
start = start + 1
|
|
end
|
|
end
|
|
maxline = math.min(maxline, t_count)
|
|
|
|
-- allow user to start at a position other than the beginning
|
|
if start ~= nil then table_p.row = clamp(start, 1, t_count + 1) end
|
|
|
|
if hasheader == true then
|
|
table_p.vcursor_min = 2 -- lowest selectable item
|
|
table_p.vcursor = 2
|
|
end
|
|
|
|
table_p.vcursor = curpos or table_p.vcursor_min
|
|
|
|
if table_p.vcursor < 1 or table_p.vcursor > maxline then
|
|
table_p.vcursor = table_p.vcursor_min
|
|
end
|
|
|
|
_print.opt.sel_line(table_p.vcursor)
|
|
_print.opt.overflow(overflow)
|
|
_print.opt.justify(justify)
|
|
|
|
_print.opt.linedesc(table_linedesc)
|
|
|
|
local opts = _print.opt.get()
|
|
opts.drawsep = drawsep
|
|
_print.opt.set(opts)
|
|
|
|
|
|
-- initialize vertical scrollbar
|
|
set_vsb(); do
|
|
local vsb =_print.opt.get()
|
|
vsb.width = vsb.width + sb_width
|
|
|
|
if rb.LCD_DEPTH == 2 then -- invert 2-bit screens
|
|
vsb.fg_pattern = 3 - vsb.fg_pattern
|
|
vsb.bg_pattern = 3 - vsb.bg_pattern
|
|
end
|
|
|
|
set_vsb = function (item)
|
|
if sb_width > 0 and t_count > (maxline or t_count) then
|
|
rb.set_viewport(vsb)
|
|
item = item or 0
|
|
local m = maxline / 2 + 1
|
|
rb.gui_scrollbar_draw(vsb.width - sb_width, vsb.y, sb_width, vsb.height,
|
|
t_count, math.max(0, item - m),
|
|
math.min(item + m, t_count), 0)
|
|
end
|
|
end
|
|
end -- set_vsb
|
|
local selected = display_table(table_p, 0, 1, 0)
|
|
|
|
_print.opt.defaults() --restore settings
|
|
|
|
if m_sel == true then -- walk the table to get selected items
|
|
selected = {}
|
|
for i = 1, t_count do
|
|
if t[i]:sub(-1) == "\0" then table.insert(selected, i) end
|
|
end
|
|
end
|
|
--rb.splash(100, string.format("#1 %d, %d, %d", row, vcursor_pos, sel))
|
|
return selected, table_p.row, table_p.vcursor
|
|
end --print_table
|