private float getVerticalScrollFactorCompat() {
if (this.mVerticalScrollFactor == 0.0F) {
TypedValue var1 = new TypedValue();
Context var2 = this.getContext();
if (!var2.getTheme().resolveAttribute(16842829, var1, true)) {
throw new IllegalStateException("Expected theme to define listPreferredItemHeight.");
}
this.mVerticalScrollFactor = var1.getDimension(var2.getResources().getDisplayMetrics());
}
return this.mVerticalScrollFactor;
}
/**
* Gets the preferred height for each item in the ListView, in pixels, after accounting for screen
* density. ImageLoader uses this value to resize thumbnail images to match the ListView item
* height.
*
* @return The preferred height in pixels, based on the current theme.
*/
private int getListPreferredItemHeight() {
final TypedValue typedValue = new TypedValue();
// Resolve list item preferred height theme attribute into typedValue
getActivity()
.getTheme()
.resolveAttribute(android.R.attr.listPreferredItemHeight, typedValue, true);
// Create a new DisplayMetrics object
final DisplayMetrics metrics = new android.util.DisplayMetrics();
// Populate the DisplayMetrics
getActivity().getWindowManager().getDefaultDisplay().getMetrics(metrics);
// Return theme value based on DisplayMetrics
return (int) typedValue.getDimension(metrics);
}
/* Stolen from PhoneWindow */
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
final DisplayMetrics metrics = getContext().getResources().getDisplayMetrics();
final boolean isPortrait = metrics.widthPixels < metrics.heightPixels;
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int width = getMeasuredWidth();
boolean measure = false;
widthMeasureSpec = MeasureSpec.makeMeasureSpec(width, EXACTLY);
final TypedValue tv = isPortrait ? mMinWidthMinor : mMinWidthMajor;
if (tv.type != TypedValue.TYPE_NULL) {
final int min;
if (tv.type == TypedValue.TYPE_DIMENSION) {
min = (int) tv.getDimension(metrics);
} else if (tv.type == TypedValue.TYPE_FRACTION) {
min = (int) tv.getFraction(metrics.widthPixels, metrics.widthPixels);
} else {
min = 0;
}
if (width < min) {
widthMeasureSpec = MeasureSpec.makeMeasureSpec(min, EXACTLY);
measure = true;
}
}
// TODO: Support height?
if (measure) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
