io.webfolder.cdp.command

Interface LayerTree

public interface LayerTree

Method Summary

Modifier and Type	Method and Description
List<String>	compositingReasons(String layerId) Provides the reasons why the given layer was composited.
void	disable() Disables compositing tree inspection.
void	enable() Enables compositing tree inspection.
String	loadSnapshot(List<PictureTile> tiles) Returns the snapshot identifier.
String	makeSnapshot(String layerId) Returns the layer snapshot identifier.
List<Double>	profileSnapshot(String snapshotId)
List<Double>	profileSnapshot(String snapshotId, Integer minRepeatCount, Double minDuration, Rect clipRect)
void	releaseSnapshot(String snapshotId) Releases layer snapshot captured by the back-end.
String	replaySnapshot(String snapshotId) Replays the layer snapshot and returns the resulting bitmap.
String	replaySnapshot(String snapshotId, Integer fromStep, Integer toStep, Double scale) Replays the layer snapshot and returns the resulting bitmap.

Method Detail

enable

void enable()

Enables compositing tree inspection.

disable

void disable()

Disables compositing tree inspection.

compositingReasons

List<String> compositingReasons(String layerId)

Provides the reasons why the given layer was composited.

Parameters:

layerId - The id of the layer for which we want to get the reasons it was composited.

Returns:

A list of strings specifying reasons for the given layer to become composited.

makeSnapshot

String makeSnapshot(String layerId)

Returns the layer snapshot identifier.

Parameters:

layerId - The id of the layer.

Returns:

The id of the layer snapshot.

loadSnapshot

String loadSnapshot(List<PictureTile> tiles)

Returns the snapshot identifier.

Parameters:

tiles - An array of tiles composing the snapshot.

Returns:

The id of the snapshot.

releaseSnapshot

void releaseSnapshot(String snapshotId)

Releases layer snapshot captured by the back-end.

Parameters:

snapshotId - The id of the layer snapshot.

profileSnapshot

List<Double> profileSnapshot(String snapshotId,
                             Integer minRepeatCount,
                             Double minDuration,
                             Rect clipRect)

replaySnapshot

String replaySnapshot(String snapshotId,
                      Integer fromStep,
                      Integer toStep,
                      Double scale)

Replays the layer snapshot and returns the resulting bitmap.

Parameters:

snapshotId - The id of the layer snapshot.

fromStep - The first step to replay from (replay from the very start if not specified).

toStep - The last step to replay to (replay till the end if not specified).

scale - The scale to apply while replaying (defaults to 1).

Returns:

A data: URL for resulting image.

profileSnapshot

List<Double> profileSnapshot(String snapshotId)

replaySnapshot

String replaySnapshot(String snapshotId)

Replays the layer snapshot and returns the resulting bitmap.

Parameters:

snapshotId - The id of the layer snapshot.

Returns:

A data: URL for resulting image.