/// <summary>Creates a new configuration for the specified context.</summary>
/// <remarks>
/// Creates a new configuration for the specified context. The configuration depends on
/// various parameters of the context, like the dimension of the display or the density
/// of the display.
/// </remarks>
/// <param name="context">The application context used to initialize this view configuration.
/// </param>
/// <seealso cref="get(android.content.Context)"></seealso>
/// <seealso cref="android.util.DisplayMetrics">android.util.DisplayMetrics</seealso>
private ViewConfiguration(android.content.Context context)
{
android.content.res.Resources res = context.getResources();
android.util.DisplayMetrics metrics = res.getDisplayMetrics();
android.content.res.Configuration config = res.getConfiguration();
float density = metrics.density;
float sizeAndDensity;
if (config.isLayoutSizeAtLeast(android.content.res.Configuration.SCREENLAYOUT_SIZE_XLARGE))
{
sizeAndDensity = density * 1.5f;
}
else
{
sizeAndDensity = density;
}
mEdgeSlop = (int)(sizeAndDensity * EDGE_SLOP + 0.5f);
mFadingEdgeLength = (int)(sizeAndDensity * FADING_EDGE_LENGTH + 0.5f);
mMinimumFlingVelocity = (int)(density * MINIMUM_FLING_VELOCITY + 0.5f);
mMaximumFlingVelocity = (int)(density * MAXIMUM_FLING_VELOCITY + 0.5f);
mScrollbarSize = (int)(density * SCROLL_BAR_SIZE + 0.5f);
mTouchSlop = (int)(sizeAndDensity * TOUCH_SLOP + 0.5f);
mPagingTouchSlop = (int)(sizeAndDensity * PAGING_TOUCH_SLOP + 0.5f);
mDoubleTapSlop = (int)(sizeAndDensity * DOUBLE_TAP_SLOP + 0.5f);
mScaledTouchExplorationTapSlop = (int)(density * TOUCH_EXPLORATION_TAP_SLOP + 0.5f
);
mWindowTouchSlop = (int)(sizeAndDensity * WINDOW_TOUCH_SLOP + 0.5f);
// Size of the screen in bytes, in ARGB_8888 format
mMaximumDrawingCacheSize = 4 * metrics.widthPixels * metrics.heightPixels;
mOverscrollDistance = (int)(sizeAndDensity * OVERSCROLL_DISTANCE + 0.5f);
mOverflingDistance = (int)(sizeAndDensity * OVERFLING_DISTANCE + 0.5f);
mFadingMarqueeEnabled = false;
}
/// <summary>Creates the top level Resources for applications with the given compatibility info.
/// </summary>
/// <remarks>Creates the top level Resources for applications with the given compatibility info.
/// </remarks>
/// <param name="resDir">the resource directory.</param>
/// <param name="compInfo">
/// the compability info. It will use the default compatibility info when it's
/// null.
/// </param>
internal android.content.res.Resources getTopLevelResources(string resDir, android.content.res.CompatibilityInfo
compInfo)
{
android.app.ActivityThread.ResourcesKey key = new android.app.ActivityThread.ResourcesKey
(resDir, compInfo.applicationScale);
android.content.res.Resources r;
lock (mPackages)
{
// Resources is app scale dependent.
if (false)
{
android.util.Slog.w(TAG, "getTopLevelResources: " + resDir + " / " + compInfo.applicationScale
);
}
[email protected]<android.content.res.Resources> wr = mActiveResources
.get(key);
r = wr != null ? wr.get() : null;
//if (r != null) Slog.i(TAG, "isUpToDate " + resDir + ": " + r.getAssets().isUpToDate());
if (r != null && r.getAssets().isUpToDate())
{
if (false)
{
android.util.Slog.w(TAG, "Returning cached resources " + r + " " + resDir + ": appScale="
+ r.getCompatibilityInfo().applicationScale);
}
return r;
}
}
//if (r != null) {
// Slog.w(TAG, "Throwing away out-of-date resources!!!! "
// + r + " " + resDir);
//}
android.content.res.AssetManager assets = new android.content.res.AssetManager();
if (assets.addAssetPath(resDir) == 0)
{
return null;
}
//Slog.i(TAG, "Resource: key=" + key + ", display metrics=" + metrics);
android.util.DisplayMetrics metrics = getDisplayMetricsLocked(null, false);
r = new android.content.res.Resources(assets, metrics, getConfiguration(), compInfo
);
if (false)
{
android.util.Slog.i(TAG, "Created app resources " + resDir + " " + r + ": " + r.getConfiguration
() + " appScale=" + r.getCompatibilityInfo().applicationScale);
}
lock (mPackages)
{
[email protected]<android.content.res.Resources> wr = mActiveResources
.get(key);
android.content.res.Resources existing = wr != null ? wr.get() : null;
if (existing != null && existing.getAssets().isUpToDate())
{
// Someone else already created the resources while we were
// unlocked; go ahead and use theirs.
r.getAssets().close();
return existing;
}
// XXX need to remove entries when weak references go away
mActiveResources.put(key, new [email protected]<android.content.res.Resources
>(r));
return r;
}
}
