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Code Issues Projects Releases Wiki Activity

Overlay background colour as an alternative to setAlpha().

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This commit is contained in:
akwizgran
2016-07-29 17:43:39 +01:00
parent bbf12ca0c4
commit fa0639d220
1 changed files with 20 additions and 16 deletions
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36
briar-android/src/org/briarproject/android/forum/ContactSelectorAdapter.java
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@@ -27,10 +27,25 @@ import static android.view.View.VISIBLE;
class ContactSelectorAdapter
extends BaseContactListAdapter<ContactSelectorAdapter.SelectableContactHolder> {
private final ColorFilter grayColorFilter;
ContactSelectorAdapter(Context context,
OnItemClickListener listener) {
super(context, listener);
if (Build.VERSION.SDK_INT >= 11) {
grayColorFilter = null;
} else {
// Overlay the background colour at 75% opacity
int bg = ContextCompat.getColor(context, R.color.window_background);
int alpha = (int) (255 * 0.75f);
int red = Color.red(bg);
int green = Color.green(bg);
int blue = Color.blue(bg);
bg = Color.argb(alpha, red, green, blue);
grayColorFilter = new PorterDuffColorFilter(bg,
PorterDuff.Mode.SRC_OVER);
}
}
@Override
@@ -61,6 +76,7 @@ class ContactSelectorAdapter
ui.shared.setVisibility(VISIBLE);
grayOutItem(ui, true);
} else {
ui.layout.setEnabled(true);
ui.shared.setVisibility(GONE);
grayOutItem(ui, false);
}
@@ -97,27 +113,15 @@ class ContactSelectorAdapter
return compareByName(c1, c2);
}
private void grayOutItem(final SelectableContactHolder ui,
final boolean gray) {
private void grayOutItem(SelectableContactHolder ui, boolean gray) {
if (Build.VERSION.SDK_INT >= 11) {
float alpha = 1f;
if (gray) alpha = 0.25f;
float alpha = gray ? 0.25f : 1f;
ui.avatar.setAlpha(alpha);
ui.name.setAlpha(alpha);
ui.shared.setAlpha(alpha);
ui.checkBox.setAlpha(alpha);
} else {
if (gray) {
ColorFilter colorFilter = new PorterDuffColorFilter(
ContextCompat.getColor(ctx, R.color.window_background),
PorterDuff.Mode.MULTIPLY);
ui.avatar.setColorFilter(colorFilter);
} else{
ui.avatar.clearColorFilter();
}
ui.name.setEnabled(!gray);
ui.shared.setEnabled(!gray);
ui.checkBox.setEnabled(!gray);
if (gray) ui.avatar.setColorFilter(grayColorFilter);
else ui.avatar.clearColorFilter();
}
}
}