feat: 添加检查是否支持色温的接口

dock插件迁移需要该接口

Author: fly602

display/color_temp.go

@@ -38,6 +38,7 @@ func (m *Manager) setColorTempMode(mode int32) error {
 		return errors.New("mode out of range, not 0 or 1 or 2")
 	}
 	m.setPropColorTemperatureMode(mode)
+	m.setPropColorTemperatureEnabled(mode != 0)
 	m.setColorTempModeReal(mode)
 	m.saveColorTempModeInCfg(mode)
 	return nil
@@ -269,6 +270,7 @@ func (m *Manager) applyColorTempConfig(displayMode byte) {
 		cfg = getDefaultUserMonitorModeConfig()
 	}
 	m.setPropColorTemperatureMode(cfg.ColorTemperatureMode)
+	m.setPropColorTemperatureEnabled(cfg.ColorTemperatureMode != 0)
 	m.setPropColorTemperatureManual(cfg.ColorTemperatureManual)
 	m.setColorTempModeReal(m.ColorTemperatureMode)
 }

display/display_dbusutil.go

@@ -209,6 +209,13 @@ type Manager struct {
 	gsColorTemperatureMode int32
 	// 存在gsetting中的色温值
 	gsColorTemperatureManual int32
+
+	// 不支持调节色温的显卡型号
+	unsupportGammaDrmList []string
+	drmSupportGamma       bool
+
+	ColorTemperatureEnabled bool `prop:"access:rw"`
+	SupportColorTemperature bool
 }
 
 type monitorSizeInfo struct {
@@ -224,6 +231,9 @@ func newManager(service *dbusutil.Service) *Manager {
 		monitorMap:     make(map[uint32]*Monitor),
 		Brightness:     make(map[string]float64),
 		redshiftRunner: newRedshiftRunner(),
+		unsupportGammaDrmList: []string{
+			"Loongson",
+		},
 	}
 	m.redshiftRunner.cb = func(value int) {
 		m.setColorTempOneShot()
@@ -392,6 +402,15 @@ func (m *Manager) initSysDisplay() {
 	if err != nil {
 		logger.Warning(err)
 	}
+	go func() {
+		// 依赖dsettings数据，需要在initDSettings后执行
+		m.drmSupportGamma = m.detectDrmSupportGamma()
+		if m.drmSupportGamma {
+			logger.Debug("setColorTempModeReal")
+			m.setColorTempModeReal(ColorTemperatureModeNone)
+		}
+		m.setPropSupportColorTemperature(!_inVM && m.drmSupportGamma)
+	}()
 }
 
 // 处理系统级别的配置更新
@@ -2966,3 +2985,34 @@ func GetForceScaleFactor() (float64, error) {
 	}
 	return 1.0, fmt.Errorf("no valid force-scale-factor")
 }
+
+func getLspci() string {
+	out, err := exec.Command("lspci").Output()
+	if err != nil {
+		logger.Warning(err)
+		return ""
+	} else {
+		return string(out)
+	}
+}
+
+func (m *Manager) detectDrmSupportGamma() bool {
+	pciInfos := strings.Split(getLspci(), "\n")
+	for _, info := range pciInfos {
+		if strings.Contains(info, "VGA") {
+			vgaSupportGamma := true
+			for _, drm := range m.unsupportGammaDrmList {
+				lowDrm := strings.ToLower(drm)
+				lowInfo := strings.ToLower(info)
+				if strings.Contains(lowInfo, lowDrm) {
+					vgaSupportGamma = false
+					break
+				}
+			}
+			if vgaSupportGamma {
+				return true
+			}
+		}
+	}
+	return false
+}

display/exported_methods_auto.go

@@ -311,3 +311,7 @@ func (m *Manager) GetRealDisplayMode() (uint8, *dbus.Error) {
 
 	return mode, nil
 }
+
+func (m *Manager) SupportSetColorTemperature() (bool, *dbus.Error) {
+	return !(_inVM || !m.drmSupportGamma), nil
+}

display/manager.go

@@ -25,9 +25,12 @@ var _hasRandr1d2 bool // 是否 randr 版本大于等于 1.2
 
 var _useWayland bool
 
-func Init(xConn *x.Conn, useWayland bool) {
+var _inVM bool
+
+func Init(xConn *x.Conn, useWayland bool, inVM bool) {
 	_xConn = xConn
 	_useWayland = useWayland
+	_inVM = inVM
 	randrVersion, err := randr.QueryVersion(xConn, randr.MajorVersion, randr.MinorVersion).Reply(xConn)
 	if err != nil {
 		logger.Warning(err)

display/manager_ifc.go

@@ -37,6 +37,8 @@ var _xConn *x.Conn
 
 var _useWayland bool
 
+var _inVM bool
+
 var _useKWin bool
 
 func init() {
@@ -77,7 +79,7 @@ func greeterDisplayMain() {
 		os.Exit(1)
 	}
 	// TODO
-	display.Init(xConn, false)
+	display.Init(xConn, false, false)
 	logger.Debug("greeter mode")
 	service, err := dbusutil.NewSessionService()
 	if err != nil {
@@ -121,7 +123,10 @@ func main() {
 		logger.Info("in wayland mode")
 		_useWayland = true
 	}
-	display.Init(xConn, _useWayland)
+
+	_inVM, err = isInVM()
+
+	display.Init(xConn, _useWayland, _inVM)
 	// TODO
 	recommendedScaleFactor = display.GetRecommendedScaleFactor()
 
@@ -182,3 +187,14 @@ func doSetLogLevel(level log.Priority) {
 	}
 	// watchdog.SetLogLevel(level)
 }
+
+func isInVM() (bool, error) {
+	cmd := exec.Command("systemd-detect-virt", "-v", "-q")
+	err := cmd.Start()
+	if err != nil {
+		return false, err
+	}
+
+	err = cmd.Wait()
+	return err == nil, nil
+}