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package de.danoeh.antennapod.view;
import android.content.Context;
import android.graphics.PorterDuff;
import android.view.ContextThemeWrapper;
import androidx.appcompat.widget.Toolbar;
import androidx.core.view.ViewCompat;
import com.google.android.material.appbar.AppBarLayout;
import com.google.android.material.appbar.CollapsingToolbarLayout;
import de.danoeh.antennapod.R;
public abstract class ToolbarIconTintManager implements AppBarLayout.OnOffsetChangedListener {
private final Context context;
private final CollapsingToolbarLayout collapsingToolbar;
private final Toolbar toolbar;
private boolean isTinted = false;
public ToolbarIconTintManager(Context context, Toolbar toolbar, CollapsingToolbarLayout collapsingToolbar) {
this.context = context;
this.collapsingToolbar = collapsingToolbar;
this.toolbar = toolbar;
}
@Override
public void onOffsetChanged(AppBarLayout appBarLayout, int offset) {
boolean tint = (collapsingToolbar.getHeight() + offset) > (2 * ViewCompat.getMinimumHeight(collapsingToolbar));
if (isTinted != tint) {
isTinted = tint;
updateTint();
}
}
public void updateTint() {
if (isTinted) {
doTint(new ContextThemeWrapper(context, R.style.Theme_AntennaPod_Dark));
toolbar.getNavigationIcon().setColorFilter(0xffffffff, PorterDuff.Mode.SRC_ATOP);
toolbar.getOverflowIcon().setColorFilter(0xffffffff, PorterDuff.Mode.SRC_ATOP);
} else {
doTint(context);
toolbar.getNavigationIcon().clearColorFilter();
toolbar.getOverflowIcon().clearColorFilter();
}
}
/**
* View expansion was changed. Icons need to be tinted
* @param themedContext ContextThemeWrapper with dark theme while expanded
*/
protected abstract void doTint(Context themedContext);
}
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