A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1--[[ Lua LCD Wrapper functions
2/***************************************************************************
3 * __________ __ ___.
4 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
5 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
6 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
7 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
8 * \/ \/ \/ \/ \/
9 * $Id$
10 *
11 * Copyright (C) 2017 William Wilgus
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ****************************************************************************/
22]]
23
24--[[ Exposed Functions
25
26 _lcd.clear
27 _lcd.duplicate
28 _lcd.image
29 _lcd.set_viewport
30 _lcd.splashf
31 _lcd.text_extent
32 _lcd.update
33 _lcd.update_rect
34
35-- Exposed Constants
36 _lcd.CX
37 _lcd.CY
38 _lcd.DEPTH
39 _lcd.W
40 _lcd.H
41
42 _lcd
43 _LCD
44
45]]
46if not rb.lcd_framebuffer then rb.splash(rb.HZ, "No Support!") return nil end
47
48_LCD = rb.lcd_framebuffer()
49
50local _lcd = {} do
51
52 --internal constants
53 local _NIL = nil -- _NIL placeholder
54
55 -- clamps value to >= min and <= max
56 local function clamp(val, min, max)
57 -- Warning doesn't check if min < max
58 if val < min then
59 return min
60 elseif val < max then
61 return val
62 end
63 return max
64 end
65
66 -- return a copy of lcd screen
67 _lcd.duplicate = function(t, screen_img)
68 screen_img = screen_img or rb.new_image()
69 screen_img:copy(rb.lcd_framebuffer())
70 return screen_img
71 end
72
73 -- updates screen in specified rectangle
74 _lcd.update_rect = function(t, x, y, w, h)
75 rb.lcd_update_rect(x - 1, y - 1,
76 clamp(x + w, 1, rb.LCD_WIDTH) - 1,
77 clamp(y + h, 1, rb.LCD_HEIGHT) - 1)
78 end
79
80 -- clears lcd, optional.. ([color, x1, y1, x2, y2, clip])
81 _lcd.clear = function(t, clr, ...)
82 rb.lcd_scroll_stop() --rb really doesn't like bg change while scroll
83 if clr == _NIL and ... == _NIL then
84 rb.lcd_clear_display()
85 else
86 _LCD:clear(clr, ...)
87 end
88 end
89
90 -- loads an image to the screen
91 _lcd.image = function(t, src, x, y)
92 if not src then --make sure an image was passed, otherwise bail
93 rb.splash(rb.HZ, "No Image!")
94 return _NIL
95 end
96 _LCD:copy(src,x,y,1,1)
97 end
98
99 -- Formattable version of splash
100 _lcd.splashf = function(t, timeout, ...)
101 rb.splash(timeout, string.format(...))
102 end
103
104 -- Gets size of text
105 _lcd.text_extent = function(t, msg, font)
106 font = font or rb.FONT_UI
107
108 return rb.font_getstringsize(msg, font)
109 end
110
111 -- Sets viewport size
112 _lcd.set_viewport = function(t, vp)
113 if not vp then rb.set_viewport() return end
114 if rb.LCD_DEPTH == 2 then -- invert 2-bit screens
115 --vp.drawmode = bit.bxor(vp.drawmode, 4)
116 vp.fg_pattern = 3 - vp.fg_pattern
117 vp.bg_pattern = 3 - vp.bg_pattern
118 end
119 rb.set_viewport(vp)
120 end
121
122 -- allows the use of _lcd() as a identifier for the screen
123 local function index(k, v)
124 return function(x, ...)
125 _LCD[v](_LCD, ...)
126 end
127 end
128
129 -- allows the use of _lcd() as a identifier for the screen
130 local function call()
131 return rb.lcd_framebuffer()
132 end
133
134 --expose functions to the outside through _lcd table
135 _lcd.update = rb.lcd_update
136 _lcd.DEPTH = rb.LCD_DEPTH
137 _lcd.W = rb.LCD_WIDTH
138 _lcd.H = rb.LCD_HEIGHT
139 _lcd.CX = (rb.LCD_WIDTH / 2)
140 _lcd.CY = (rb.LCD_HEIGHT / 2)
141 _lcd = setmetatable(_lcd,{__index = index, __call = call})
142
143end -- _lcd functions
144
145return _lcd
146