/**
* Initializes and acquires the scene, creating various Android objects such as context, inflater,
* and parser.
*
* @param timeout the time to wait if another rendering is happening.
* @return whether the scene was prepared
* @see #acquire(long)
* @see #release()
*/
public Result init(long timeout) {
// acquire the lock. if the result is null, lock was just acquired, otherwise, return
// the result.
Result result = acquireLock(timeout);
if (result != null) {
return result;
}
// setup the ParserFactory
ParserFactory.setParserFactory(mParams.getLayoutlibCallback().getParserFactory());
HardwareConfig hardwareConfig = mParams.getHardwareConfig();
// setup the display Metrics.
DisplayMetrics metrics = new DisplayMetrics();
metrics.densityDpi = metrics.noncompatDensityDpi = hardwareConfig.getDensity().getDpiValue();
metrics.density =
metrics.noncompatDensity = metrics.densityDpi / (float) DisplayMetrics.DENSITY_DEFAULT;
metrics.scaledDensity = metrics.noncompatScaledDensity = metrics.density;
metrics.widthPixels = metrics.noncompatWidthPixels = hardwareConfig.getScreenWidth();
metrics.heightPixels = metrics.noncompatHeightPixels = hardwareConfig.getScreenHeight();
metrics.xdpi = metrics.noncompatXdpi = hardwareConfig.getXdpi();
metrics.ydpi = metrics.noncompatYdpi = hardwareConfig.getYdpi();
RenderResources resources = mParams.getResources();
// build the context
mContext =
new BridgeContext(
mParams.getProjectKey(),
metrics,
resources,
mParams.getAssets(),
mParams.getLayoutlibCallback(),
getConfiguration(),
mParams.getTargetSdkVersion(),
mParams.isRtlSupported());
setUp();
return SUCCESS.createResult();
}
private Configuration getConfiguration() {
Configuration config = new Configuration();
HardwareConfig hardwareConfig = mParams.getHardwareConfig();
ScreenSize screenSize = hardwareConfig.getScreenSize();
if (screenSize != null) {
switch (screenSize) {
case SMALL:
config.screenLayout |= Configuration.SCREENLAYOUT_SIZE_SMALL;
break;
case NORMAL:
config.screenLayout |= Configuration.SCREENLAYOUT_SIZE_NORMAL;
break;
case LARGE:
config.screenLayout |= Configuration.SCREENLAYOUT_SIZE_LARGE;
break;
case XLARGE:
config.screenLayout |= Configuration.SCREENLAYOUT_SIZE_XLARGE;
break;
}
}
Density density = hardwareConfig.getDensity();
if (density == null) {
density = Density.MEDIUM;
}
config.screenWidthDp = hardwareConfig.getScreenWidth() / density.getDpiValue();
config.screenHeightDp = hardwareConfig.getScreenHeight() / density.getDpiValue();
if (config.screenHeightDp < config.screenWidthDp) {
//noinspection SuspiciousNameCombination
config.smallestScreenWidthDp = config.screenHeightDp;
} else {
config.smallestScreenWidthDp = config.screenWidthDp;
}
config.densityDpi = density.getDpiValue();
// never run in compat mode:
config.compatScreenWidthDp = config.screenWidthDp;
config.compatScreenHeightDp = config.screenHeightDp;
ScreenOrientation orientation = hardwareConfig.getOrientation();
if (orientation != null) {
switch (orientation) {
case PORTRAIT:
config.orientation = Configuration.ORIENTATION_PORTRAIT;
break;
case LANDSCAPE:
config.orientation = Configuration.ORIENTATION_LANDSCAPE;
break;
case SQUARE:
//noinspection deprecation
config.orientation = Configuration.ORIENTATION_SQUARE;
break;
}
} else {
config.orientation = Configuration.ORIENTATION_UNDEFINED;
}
// TODO: fill in more config info.
return config;
}