michael@0: /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.widget;
michael@0: 
michael@0: import org.mozilla.gecko.R;
michael@0: 
michael@0: import java.util.ArrayList;
michael@0: import java.util.Arrays;
michael@0: import java.util.List;
michael@0: 
michael@0: import android.content.Context;
michael@0: import android.content.res.Resources;
michael@0: import android.graphics.Color;
michael@0: import android.graphics.PorterDuff;
michael@0: import android.graphics.Rect;
michael@0: import android.graphics.drawable.Drawable;
michael@0: import android.view.View;
michael@0: import android.view.ViewGroup;
michael@0: import android.view.WindowManager;
michael@0: import android.widget.ArrayAdapter;
michael@0: import android.widget.AdapterView;
michael@0: import android.widget.CheckedTextView;
michael@0: import android.widget.ListView;
michael@0: import android.util.AttributeSet;
michael@0: import android.util.DisplayMetrics;
michael@0: import android.util.TypedValue;
michael@0: 
michael@0: public class BasicColorPicker extends ListView {
michael@0:     private final static String LOGTAG = "GeckoBasicColorPicker";
michael@0:     private final static List<Integer> DEFAULT_COLORS = Arrays.asList(Color.rgb(215,57,32),
michael@0:                                                                       Color.rgb(255,134,5),
michael@0:                                                                       Color.rgb(255,203,19),
michael@0:                                                                       Color.rgb(95,173,71),
michael@0:                                                                       Color.rgb(84,201,168),
michael@0:                                                                       Color.rgb(33,161,222),
michael@0:                                                                       Color.rgb(16,36,87),
michael@0:                                                                       Color.rgb(91,32,103),
michael@0:                                                                       Color.rgb(212,221,228),
michael@0:                                                                       Color.BLACK);
michael@0: 
michael@0:     private static Drawable mCheckDrawable = null;
michael@0:     private int mSelected = 0;
michael@0:     final private ColorPickerListAdapter mAdapter;
michael@0: 
michael@0:     public BasicColorPicker(Context context) {
michael@0:         this(context, null);
michael@0:     }
michael@0: 
michael@0:     public BasicColorPicker(Context context, AttributeSet attrs) {
michael@0:         this(context, attrs, 0);
michael@0:     }
michael@0: 
michael@0:     public BasicColorPicker(Context context, AttributeSet attrs, int style) {
michael@0:         this(context, attrs, style, DEFAULT_COLORS);
michael@0:     }
michael@0: 
michael@0:     public BasicColorPicker(Context context, AttributeSet attrs, int style, List<Integer> colors) {
michael@0:         super(context, attrs, style);
michael@0:         mAdapter = new ColorPickerListAdapter(context, new ArrayList<Integer>(colors));
michael@0:         setAdapter(mAdapter);
michael@0: 
michael@0:         setOnItemClickListener(new AdapterView.OnItemClickListener() {
michael@0:             @Override
michael@0:             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
michael@0:                 mSelected = position;
michael@0:                 mAdapter.notifyDataSetChanged();
michael@0:             }
michael@0:         });
michael@0:     }
michael@0: 
michael@0:     public int getColor() {
michael@0:         return mAdapter.getItem(mSelected);
michael@0:     }
michael@0: 
michael@0:     public void setColor(int color) {
michael@0:         if (!DEFAULT_COLORS.contains(color)) {
michael@0:             mSelected = mAdapter.getCount();
michael@0:             mAdapter.add(color);
michael@0:         } else {
michael@0:             mSelected = DEFAULT_COLORS.indexOf(color);
michael@0:         }
michael@0: 
michael@0:         setSelection(mSelected);
michael@0:         mAdapter.notifyDataSetChanged();
michael@0:     }
michael@0: 
michael@0:     private Drawable getCheckDrawable() {
michael@0:         if (mCheckDrawable == null) {
michael@0:             Resources res = getContext().getResources();
michael@0: 
michael@0:             TypedValue typedValue = new TypedValue();
michael@0:             getContext().getTheme().resolveAttribute(android.R.attr.listPreferredItemHeight, typedValue, true);
michael@0:             DisplayMetrics metrics = new android.util.DisplayMetrics();
michael@0:             ((WindowManager)getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getMetrics(metrics);
michael@0:             int height = (int) typedValue.getDimension(metrics);
michael@0: 
michael@0:             Drawable background = res.getDrawable(R.drawable.color_picker_row_bg);
michael@0:             Rect r = new Rect();
michael@0:             background.getPadding(r);
michael@0:             height -= r.top + r.bottom;
michael@0: 
michael@0:             mCheckDrawable = res.getDrawable(R.drawable.color_picker_checkmark);
michael@0:             mCheckDrawable.setBounds(0, 0, height, height);
michael@0:         }
michael@0: 
michael@0:         return mCheckDrawable;
michael@0:     }
michael@0: 
michael@0:    private class ColorPickerListAdapter extends ArrayAdapter<Integer> {
michael@0:         private final List<Integer> mColors;
michael@0: 
michael@0:         public ColorPickerListAdapter(Context context, List<Integer> colors) {
michael@0:             super(context, R.layout.color_picker_row, colors);
michael@0:             mColors = colors;
michael@0:         }
michael@0: 
michael@0:         public View getView(int position, View convertView, ViewGroup parent) {
michael@0:             View v = super.getView(position, convertView, parent);
michael@0: 
michael@0:             Drawable d = v.getBackground();
michael@0:             d.setColorFilter(getItem(position), PorterDuff.Mode.MULTIPLY);
michael@0:             v.setBackgroundDrawable(d);
michael@0: 
michael@0:             Drawable check = null;
michael@0:             CheckedTextView checked = ((CheckedTextView) v);
michael@0:             if (mSelected == position) {
michael@0:                 check = getCheckDrawable();
michael@0:             }
michael@0: 
michael@0:             checked.setCompoundDrawables(check, null, null, null);
michael@0:             checked.setText("");
michael@0: 
michael@0:             return v;
michael@0:         }
michael@0:     }
michael@0: }