Class: Bandshell::ScreenControl
- Inherits:
-
Object
- Object
- Bandshell::ScreenControl
- Defined in:
- lib/bandshell/screen_control.rb
Class Method Summary collapse
-
.control_availability ⇒ Object
Returns a boolean and an explanatory string indicating whether the screen can be controlled by DPMS.
-
.default_display ⇒ Object
Only used if no display is set already.
-
.enforce_screen_state(state) ⇒ Object
Ensures that the display is in the specified state by enforcing each of a number of parameters, passed as the “state” hash.
- .force_screen_off ⇒ Object
- .force_screen_on ⇒ Object
-
.screen_is_on? ⇒ Boolean
true, false, or unknown.
Class Method Details
.control_availability ⇒ Object
Returns a boolean and an explanatory string indicating whether the screen can be controlled by DPMS.
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# File 'lib/bandshell/screen_control.rb', line 47 def control_availability dpms_availability end |
.default_display ⇒ Object
Only used if no display is set already.
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# File 'lib/bandshell/screen_control.rb', line 9 def default_display ":0" end |
.enforce_screen_state(state) ⇒ Object
Ensures that the display is in the specified state by enforcing each of a number of parameters, passed as the “state” hash. Valid keys:
:on => (boolean value: true for on, false for off)
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# File 'lib/bandshell/screen_control.rb', line 17 def enforce_screen_state(state) if !state.is_a? Hash raise "enforce_screen_state: did not receive a hash!" end if state.has_key? :on if state[:on] == true force_screen_on unless screen_is_on? == true elsif state[:on] == false force_screen_off unless screen_is_on? == false else raise "enforce_screen_state: Invalid value for :on!" end end end |
.force_screen_off ⇒ Object
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# File 'lib/bandshell/screen_control.rb', line 36 def force_screen_off dpms_force_screen_off end |
.force_screen_on ⇒ Object
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# File 'lib/bandshell/screen_control.rb', line 32 def force_screen_on dpms_force_screen_on end |
.screen_is_on? ⇒ Boolean
true, false, or unknown
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# File 'lib/bandshell/screen_control.rb', line 41 def screen_is_on? dpms_screen_is_on? end |