ColorPickerDialog.java

package com.scheffsblend.iconfilters;

/*
 * Copyright (C) 2010 Daniel Nilsson
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


import android.app.AlertDialog;
import android.content.Context;
import android.graphics.PixelFormat;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;

import com.scheffsblend.iconfilters.ColorPickerView.OnColorChangedListener;

public class ColorPickerDialog extends AlertDialog implements
        ColorPickerView.OnColorChangedListener {

    private ColorPickerView mColorPicker;

    private ColorPanelView mOldColor;
    private ColorPanelView mNewColor;

    private OnColorChangedListener mListener;

    public ColorPickerDialog(Context context, int initialColor) {
        this(context, initialColor, null);

        init(initialColor);
    }

    public ColorPickerDialog(Context context, int initialColor, OnColorChangedListener listener) {
        super(context);
        mListener = listener;
        init(initialColor);
    }

    private void init(int color) {
        // To fight color branding.
        getWindow().setFormat(PixelFormat.RGBA_8888);
        setUp(color);
    }

    private void setUp(int color) {
        boolean isLandscapeLayout = false;

        LayoutInflater inflater = (LayoutInflater) getContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View layout = inflater.inflate(R.layout.dialog_color_picker, null);

        setView(layout);

        setTitle("Pick a Color");
        // setIcon(android.R.drawable.ic_dialog_info);

        LinearLayout landscapeLayout = (LinearLayout) layout.findViewById(R.id.dialog_color_picker_extra_layout_landscape);

        if(landscapeLayout != null) {
            isLandscapeLayout = true;
        }


        mColorPicker = (ColorPickerView) layout
                .findViewById(R.id.color_picker_view);
        mOldColor = (ColorPanelView) layout.findViewById(R.id.color_panel_old);
        mNewColor = (ColorPanelView) layout.findViewById(R.id.color_panel_new);

        if(!isLandscapeLayout) {
            ((LinearLayout) mOldColor.getParent()).setPadding(Math
                    .round(mColorPicker.getDrawingOffset()), 0, Math
                    .round(mColorPicker.getDrawingOffset()), 0);

        }
        else {
            landscapeLayout.setPadding(0, 0, Math.round(mColorPicker.getDrawingOffset()), 0);
            setTitle(null);
        }

        mColorPicker.setOnColorChangedListener(this);

        mOldColor.setColor(color);
        mColorPicker.setColor(color, true);

    }

    @Override
    public void onColorChanged(int color) {
        mNewColor.setColor(color);

        if (mListener != null) {
            mListener.onColorChanged(color);

        }

    }

    public void setAlphaSliderVisible(boolean visible) {
        mColorPicker.setAlphaSliderVisible(visible);
    }

    public int getColor() {
        return mColorPicker.getColor();
    }

}