ChromeSystemDisplay class
Methods
-
clearTouchCalibration(String id)
→ void
-
Resets the touch calibration for the display and brings it back to its
default state by clearing any touch calibration data associated with the
display.
|id|: The display's unique identifier.
-
completeCustomTouchCalibration(TouchCalibrationPairQuad pairs, Bounds bounds)
→ void
-
Sets the touch calibration pairs for a display. These |pairs| would be
used to calibrate the touch screen for display with |id| called in
startCustomTouchCalibration(). Always call |startCustomTouchCalibration|
before calling this method. If another touch calibration is already in
progress this will throw an error.
|pairs|: The pairs of point used to calibrate the display.
|bounds|: Bounds of the display when the touch calibration was performed.
|bounds.left| and |bounds.top| values are ignored.
-
enableUnifiedDesktop(bool enabled)
→ void
-
Enables/disables the unified desktop feature. If enabled while mirroring
is active, the desktop mode will not change until mirroring is turned
off. Otherwise, the desktop mode will switch to unified immediately.
NOTE: This is only available to Chrome OS Kiosk apps and Web UI.
|enabled|: True if unified desktop should be enabled.
-
getDisplayLayout()
→ Future<List<DisplayLayout>>
-
Requests the layout info for all displays.
NOTE: This is only available to Chrome OS Kiosk apps and Web UI.
|callback|: The callback to invoke with the results.
-
getInfo(GetInfoFlags? flags)
→ Future<List<DisplayUnitInfo>>
-
Requests the information for all attached display devices.
|flags|: Options affecting how the information is returned.
|callback|: The callback to invoke with the results.
-
noSuchMethod(Invocation invocation)
→ dynamic
-
Invoked when a nonexistent method or property is accessed.
inherited
-
overscanCalibrationAdjust(String id, Insets delta)
→ void
-
Adjusts the current overscan insets for a display. Typically this should
either move the display along an axis (e.g. left+right have the same
value) or scale it along an axis (e.g. top+bottom have opposite values).
Each Adjust call is cumulative with previous calls since Start.
|id|: The display's unique identifier.
|delta|: The amount to change the overscan insets.
-
overscanCalibrationComplete(String id)
→ void
-
Complete overscan adjustments for a display by saving the current values
and hiding the overlay.
|id|: The display's unique identifier.
-
overscanCalibrationReset(String id)
→ void
-
Resets the overscan insets for a display to the last saved value (i.e
before Start was called).
|id|: The display's unique identifier.
-
overscanCalibrationStart(String id)
→ void
-
Starts overscan calibration for a display. This will show an overlay
on the screen indicating the current overscan insets. If overscan
calibration for display |id| is in progress this will reset calibration.
|id|: The display's unique identifier.
-
setDisplayLayout(List<DisplayLayout> layouts)
→ Future<void>
-
Set the layout for all displays. Any display not included will use the
default layout. If a layout would overlap or be otherwise invalid it
will be adjusted to a valid layout. After layout is resolved, an
onDisplayChanged event will be triggered.
NOTE: This is only available to Chrome OS Kiosk apps and Web UI.
|layouts|: The layout information, required for all displays except
the primary display.
|callback|: Empty function called when the function finishes. To find out
whether the function succeeded,
runtime.lastError should be
queried.
-
setDisplayProperties(String id, DisplayProperties info)
→ Future<void>
-
Updates the properties for the display specified by |id|, according to
the information provided in |info|. On failure,
runtime.lastError
will be set.
NOTE: This is only available to Chrome OS Kiosk apps and Web UI.
|id|: The display's unique identifier.
|info|: The information about display properties that should be changed.
A property will be changed only if a new value for it is specified in
|info|.
|callback|: Empty function called when the function finishes. To find out
whether the function succeeded, runtime.lastError should be
queried.
-
setMirrorMode(MirrorModeInfo info)
→ Future<void>
-
Sets the display mode to the specified mirror mode. Each call resets the
state from previous calls. Calling setDisplayProperties() will fail for
the mirroring destination displays.
NOTE: This is only available to Chrome OS Kiosk apps and Web UI.
|info|: The information of the mirror mode that should be applied to the
display mode.
|callback|: Empty function called when the function finishes. To find out
whether the function succeeded,
runtime.lastError should be
queried.
-
showNativeTouchCalibration(String id)
→ Future<bool>
-
Displays the native touch calibration UX for the display with |id| as
display id. This will show an overlay on the screen with required
instructions on how to proceed. The callback will be invoked in case of
successful calibration only. If the calibration fails, this will throw an
error.
|id|: The display's unique identifier.
|callback|: Optional callback to inform the caller that the touch
calibration has ended. The argument of the callback informs if the
calibration was a success or not.
-
startCustomTouchCalibration(String id)
→ void
-
Starts custom touch calibration for a display. This should be called when
using a custom UX for collecting calibration data. If another touch
calibration is already in progress this will throw an error.
|id|: The display's unique identifier.
-
toString()
→ String
-
A string representation of this object.
inherited
