/
backlight.go
260 lines (228 loc) · 5.51 KB
/
backlight.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
package keyboard
import (
"github.com/bgould/keyboard-firmware/keyboard/hsv"
"github.com/bgould/keyboard-firmware/keyboard/keycodes"
)
type BacklightMode uint8
type BacklightLevel uint8
const (
BacklightOff BacklightMode = iota
BacklightOn
BacklightBreathing
)
type BacklightDriver interface {
Configure()
SetBacklight(mode BacklightMode, color hsv.Color)
Task()
}
type Backlight struct {
// BacklightDriver implementation to use; if nil, backlight is disabled.
Driver BacklightDriver
// Steps is the number of "on" states in between the off and on states.
// The default zero value is treated the same as a value of 1.
// A value 1 means that only on/off are supported; any value higher than that
// will be used to automatically calculate equal "steps" in between the off
// and fully on state.
Steps uint8
// Default backlight mode to use when not explicitly set
DefaultMode BacklightMode
// Default backlight level to use when not explicitly set
DefaultLevel BacklightLevel
// Whether or not backlight "breathing" is enabled
SupportsBreathing bool
// Whether or not to include "breathing" mode when iterating backlight steps
IncludeBreathingInSteps bool
state backlightState
}
func (bl *Backlight) Configure() {
if bl.Driver != nil {
bl.Driver.Configure()
}
bl.state.color = hsv.Color{H: 128, S: 128, V: 255}
}
type backlightState struct {
mode BacklightMode
color hsv.Color
steps uint8
breathing bool
breathStep bool
}
func (bl *Backlight) steps() uint8 {
if bl.Steps == 0 {
return 1
}
return bl.Steps
}
func (kbd *Keyboard) SetBacklight(bl Backlight) {
kbd.backlight = bl
kbd.backlight.Driver.SetBacklight(bl.DefaultMode, hsv.White)
}
func (kbd *Keyboard) BacklightDriver() BacklightDriver {
return kbd.backlight.Driver
}
func (kbd *Keyboard) BacklightEnabled() bool {
return kbd.backlight.Driver != nil
}
func (kbd *Keyboard) processBacklight(key keycodes.Keycode, made bool) {
if !kbd.BacklightEnabled() {
return
}
kbd.backlight.ProcessKey(key, made)
}
func (bl *Backlight) ProcessKey(key keycodes.Keycode, made bool) {
if !key.IsBacklight() { // sanity check
return
}
prev := bl.state
state := &bl.state
state.steps = bl.steps()
state.breathStep = bl.IncludeBreathingInSteps
switch key {
case keycodes.QK_BACKLIGHT_ON:
// println("backlight on", made)
if made {
state.On()
}
case keycodes.QK_BACKLIGHT_OFF:
// println("backlight off", made)
if made {
state.Off()
}
case keycodes.QK_BACKLIGHT_TOGGLE:
// println("backlight toggle", made)
if made {
state.Toggle()
}
case keycodes.QK_BACKLIGHT_DOWN:
step := state.step()
// println("backlight down", made, step)
if made && step != 0 {
state.Down()
}
case keycodes.QK_BACKLIGHT_UP:
// println("backlight up", made, state.Step())
if made {
state.Up()
}
case keycodes.QK_BACKLIGHT_STEP:
// println("backlight step", made, state.Step())
if made {
state.Next()
}
case keycodes.QK_BACKLIGHT_TOGGLE_BREATHING:
// println("backlight toggle breathing", made)
if made {
state.ToggleBreathing()
}
}
// kbd.backlight.Driver.SetBacklight(state.mode, state.level)
changed := (bl.state != prev)
if changed {
bl.Sync()
}
}
func (bl *Backlight) Sync() {
if bl.Driver != nil {
// println("backlight HSV", bl.state.color.H, bl.state.color.S, bl.state.color.V)
bl.Driver.SetBacklight(bl.state.mode, bl.state.color)
}
}
func (st *backlightState) Toggle() {
switch st.mode {
case BacklightOff:
if st.breathing {
st.mode = BacklightBreathing
} else {
st.On()
}
case BacklightOn:
st.mode = BacklightOff
st.breathing = false
case BacklightBreathing:
st.mode = BacklightOff
st.breathing = true
}
}
func (st *backlightState) Off() {
st.mode = BacklightOff
}
func (st *backlightState) On() {
step := st.step()
// println("turning on with step at", step)
if step == 0 {
st.setStep(1)
}
st.mode = BacklightOn
}
func (st *backlightState) Up() {
st.setStep(st.step() + 1)
}
func (st *backlightState) Down() {
st.setStep(st.step() - 1)
}
func (st *backlightState) Next() {
curr := st.step()
mode := st.mode
if st.mode == BacklightBreathing {
st.mode = BacklightOn
st.breathing = false
}
if curr >= (st.steps) {
if st.breathStep && mode != BacklightBreathing {
st.mode = BacklightBreathing
st.breathing = true
} else {
st.setStep(0)
}
} else {
st.setStep(curr + 1)
}
}
func (st *backlightState) ToggleBreathing() {
st.breathing = !st.breathing
if st.mode == BacklightOff {
st.breathing = true
// return
}
if st.breathing {
st.mode = BacklightBreathing
} else {
st.mode = BacklightOn
}
}
// SetRawLevel sets the level to an unscaled by number of steps
// func (st *backlightState) setLevel(val uint8) {
// st.level = BacklightLevel(val)
// }
// SetRawLevel sets the level to an scaled by number of steps; returns the
// raw level value between 0x00-0xFF
func (st *backlightState) setStep(step uint8) uint8 {
if step == 0 {
// st.level = 0
st.color.V = 0
st.mode = BacklightOff
} else if step < (st.steps) {
// println(st.steps)
var intvl uint8 = 0xFF / st.steps
// st.level = BacklightLevel(step * intvl)
st.color.V = step * intvl
st.breathing = false
st.mode = BacklightOn
} else {
// st.level = 0xFF
st.color.V = 0xFF
st.breathing = false
st.mode = BacklightOn
}
return st.color.V // uint8(st.level)
}
// step returns the current
func (st *backlightState) step() uint8 {
if st.color.V == 0 {
return 0
} else if st.color.V == 0xFF {
return st.steps
} else {
return uint8(st.color.V) / (0xFF / st.steps)
}
}