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Allow all buttons and axes on virtual devices to be specified by either number or an explicit list. (#5)

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Reviewed-on: #5
Co-authored-by: Anna Rose Wiggins <annabunches@gmail.com>
Co-committed-by: Anna Rose Wiggins <annabunches@gmail.com>
This commit is contained in:
Anna Rose Wiggins 2025-07-17 20:04:21 +00:00 • committed by Anna Rose Wiggins
parent 712dcdbc07
commit 6ef0cbd07c
11 changed files with 1114 additions and 130 deletions
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100
internal/config/devices.go
View file

@ -23,6 +23,12 @@ func (parser *ConfigParser) CreateVirtualDevices() map[string]*evdev.InputDevice
}
name := fmt.Sprintf("joyful-%s", deviceConfig.Name)
capabilities := map[evdev.EvType][]evdev.EvCode{
evdev.EV_KEY: makeButtons(deviceConfig.NumButtons, deviceConfig.Buttons),
evdev.EV_ABS: makeAxes(deviceConfig.NumAxes, deviceConfig.Axes),
evdev.EV_REL: makeRelativeAxes(deviceConfig.NumRelativeAxes, deviceConfig.RelativeAxes),
}
device, err := evdev.CreateDevice(
name,
// TODO: who knows what these should actually be
@ -32,11 +38,7 @@ func (parser *ConfigParser) CreateVirtualDevices() map[string]*evdev.InputDevice
Product: 0x0816,
Version: 1,
},
map[evdev.EvType][]evdev.EvCode{
evdev.EV_KEY: makeButtons(int(deviceConfig.Buttons)),
evdev.EV_ABS: makeAxes(int(deviceConfig.Axes)),
evdev.EV_REL: makeRelativeAxes(deviceConfig.RelativeAxes),
},
capabilities,
)
if err != nil {
@ -45,7 +47,13 @@ func (parser *ConfigParser) CreateVirtualDevices() map[string]*evdev.InputDevice
}
deviceMap[deviceConfig.Name] = device
logger.Log(fmt.Sprintf("Created virtual device '%s'", name))
logger.Log(fmt.Sprintf(
"Created virtual device '%s' with %d buttons, %d axes, and %d relative axes",
name,
len(capabilities[evdev.EV_KEY]),
len(capabilities[evdev.EV_ABS]),
len(capabilities[evdev.EV_REL]),
))
}
return deviceMap
@ -81,12 +89,31 @@ func (parser *ConfigParser) ConnectPhysicalDevices() map[string]*evdev.InputDevi
return deviceMap
}
func makeButtons(numButtons int) []evdev.EvCode {
// TODO: these functions have a lot of duplication; we need to figure out how to refactor it cleanly
// without losing logging context...
func makeButtons(numButtons int, buttonList []string) []evdev.EvCode {
if numButtons > 0 && len(buttonList) > 0 {
logger.Log("'num_buttons' and 'buttons' both specified, ignoring 'num_buttons'")
}
if numButtons > VirtualDeviceMaxButtons {
numButtons = VirtualDeviceMaxButtons
logger.Logf("Limiting virtual device buttons to %d", VirtualDeviceMaxButtons)
}
if len(buttonList) > 0 {
buttons := make([]evdev.EvCode, 0, len(buttonList))
for _, codeStr := range buttonList {
code, err := parseCode(codeStr, "BTN")
if err != nil {
logger.LogError(err, "Failed to create button, skipping")
continue
}
buttons = append(buttons, code)
}
return buttons
}
buttons := make([]evdev.EvCode, numButtons)
startCode := 0x120
@ -104,7 +131,24 @@ func makeButtons(numButtons int) []evdev.EvCode {
return buttons
}
func makeAxes(numAxes int) []evdev.EvCode {
func makeAxes(numAxes int, axisList []string) []evdev.EvCode {
if numAxes > 0 && len(axisList) > 0 {
logger.Log("'num_axes' and 'axes' both specified, ignoring 'num_axes'")
}
if len(axisList) > 0 {
axes := make([]evdev.EvCode, 0, len(axisList))
for _, codeStr := range axisList {
code, err := parseCode(codeStr, "ABS")
if err != nil {
logger.LogError(err, "Failed to create axis, skipping")
continue
}
axes = append(axes, code)
}
return axes
}
if numAxes > 8 {
numAxes = 8
logger.Log("Limiting virtual device axes to 8")
@ -118,19 +162,33 @@ func makeAxes(numAxes int) []evdev.EvCode {
return axes
}
func makeRelativeAxes(axes []string) []evdev.EvCode {
codes := make([]evdev.EvCode, 0)
for _, axis := range axes {
code, ok := evdev.RELFromString[axis]
if !ok {
logger.Logf("Relative axis '%s' invalid. Skipping.", axis)
continue
}
codes = append(codes, code)
func makeRelativeAxes(numAxes int, axisList []string) []evdev.EvCode {
if numAxes > 0 && len(axisList) > 0 {
logger.Log("'num_rel_axes' and 'rel_axes' both specified, ignoring 'num_rel_axes'")
}
return codes
if len(axisList) > 0 {
axes := make([]evdev.EvCode, 0, len(axisList))
for _, codeStr := range axisList {
code, err := parseCode(codeStr, "REL")
if err != nil {
logger.LogError(err, "Failed to create axis, skipping")
continue
}
axes = append(axes, code)
}
return axes
}
if numAxes > 10 {
numAxes = 10
logger.Log("Limiting virtual device relative axes to 10")
}
axes := make([]evdev.EvCode, numAxes)
for i := 0; i < numAxes; i++ {
axes[i] = evdev.EvCode(i)
}
return axes
}