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/*
* mygram-droid: Android TV client for Foldergram.
* Copyright (C) 2026 Danilo M. <danix@danix.xyz>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
package mygram.droid;
import android.content.Context;
import android.graphics.Color;
import android.graphics.RenderEffect;
import android.graphics.Shader;
import android.text.InputType;
import android.view.Gravity;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
import java.util.List;
/** View helpers. The UI is built in code, there are no layout files. */
final class Ui {
static final int RED = 0xFFFF3B5C;
/** Post tiles: portrait, most media is 9:16. */
static final int POST_W = 128, POST_H = 228;
private Ui() {
}
static int dp(Context c, float v) {
return Math.round(v * c.getResources().getDisplayMetrics().density);
}
static TextView text(Context c, String s, int sp) {
TextView t = new TextView(c);
t.setText(s);
t.setTextSize(sp);
t.setTextColor(Color.WHITE);
return t;
}
static LinearLayout column(Context c) {
LinearLayout box = new LinearLayout(c);
box.setOrientation(LinearLayout.VERTICAL);
box.setGravity(Gravity.CENTER);
int p = dp(c, 32);
box.setPadding(p, p, p, p);
return box;
}
static LinearLayout row(Context c) {
LinearLayout row = new LinearLayout(c);
row.setGravity(Gravity.CENTER);
return row;
}
static EditText field(Context c, String hint, int inputType) {
EditText e = new EditText(c);
e.setHint(hint);
// setSingleLine() resets the input type's transformation, unmasking
// passwords; it must come first.
e.setSingleLine(true);
e.setInputType(inputType);
e.setTextColor(Color.WHITE);
e.setHintTextColor(Color.GRAY);
e.setMinWidth(dp(c, 400));
return e;
}
static int password() {
return InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD;
}
/** Focus ring and a small zoom: the only focus feedback on a TV. */
static void focusable(View v) {
v.setFocusable(true);
v.setForeground(v.getContext().getDrawable(R.drawable.focus_ring));
v.setOnFocusChangeListener((x, has) -> zoom(x, has));
}
private static void zoom(View v, boolean in) {
v.animate().scaleX(in ? 1.08f : 1f).scaleY(in ? 1.08f : 1f).setDuration(120).start();
}
/** Icon-only button; its label shows under it while it has focus. Child 0 is the ImageView. */
static LinearLayout iconButton(Context c, int icon, String label, View.OnClickListener click) {
LinearLayout box = new LinearLayout(c);
box.setOrientation(LinearLayout.VERTICAL);
box.setGravity(Gravity.CENTER_HORIZONTAL);
int p = dp(c, 10);
box.setPadding(p, p, p, p / 2);
ImageView image = new ImageView(c);
image.setImageResource(icon);
image.setContentDescription(label);
int s = dp(c, 36);
box.addView(image, new LinearLayout.LayoutParams(s, s));
TextView t = text(c, label, 12);
t.setVisibility(View.INVISIBLE);
box.addView(t);
box.setFocusable(true);
box.setForeground(c.getDrawable(R.drawable.focus_ring));
box.setOnFocusChangeListener((v, has) -> {
t.setVisibility(has ? View.VISIBLE : View.INVISIBLE);
zoom(v, has);
});
box.setOnClickListener(click);
return box;
}
static void blur(ImageView v, float radius) {
v.setRenderEffect(RenderEffect.createBlurEffect(radius, radius, Shader.TileMode.CLAMP));
}
static RecyclerView list(Context c, int orientation) {
RecyclerView rv = new RecyclerView(c);
rv.setLayoutManager(new LinearLayoutManager(c, orientation, false));
int p = dp(c, 24);
rv.setPadding(p, 0, p, 0);
rv.setClipToPadding(false);
return rv;
}
static RecyclerView grid(Context c, List<TileAdapter.Tile> tiles, int w, int h, int span) {
RecyclerView rv = new RecyclerView(c);
rv.setLayoutManager(new GridLayoutManager(c, span));
rv.setAdapter(new TileAdapter(tiles, w, h));
int p = dp(c, 24);
rv.setPadding(p, p, p, p);
rv.setClipToPadding(false);
return rv;
}
/** Tiles that open the viewer on posts, starting at the chosen one. */
static List<TileAdapter.Tile> postTiles(Context c, List<Post> posts) {
List<TileAdapter.Tile> tiles = new ArrayList<>();
for (int i = 0; i < posts.size(); i++) {
int start = i;
tiles.add(TileAdapter.post(posts.get(i), () -> Playlist.open(c, posts, start, null)));
}
return tiles;
}
}
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