QuickContactDivot.java

// Copyright 2011 Google Inc.
// All Rights Reserved.

package com.tweetlanes.android.core.view;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

import com.tweetlanes.android.core.AppSettings;
import com.tweetlanes.android.core.R;

public class QuickContactDivot extends ImageView implements Divot {

    private Drawable mDrawable;
    private int mDrawableIntrinsicWidth;
    private int mDrawableIntrinsicHeight;
    private int mPosition;

    // The screen density. Multiple this by dips to get pixels.
    private float mDensity;

    public QuickContactDivot(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        initialize(attrs);
    }

    public QuickContactDivot(Context context, AttributeSet attrs) {
        super(context, attrs);
        initialize(attrs);
    }

    public QuickContactDivot(Context context) {
        super(context);
        initialize(null);
    }

    private void initialize(AttributeSet attrs) {
        if (attrs != null) {
            mPosition = attrs.getAttributeListValue(null, "position",
                    sPositionChoices, -1);
        }

        Resources r = getContext().getResources();
        mDensity = r.getDisplayMetrics().density;

        setDrawable();
    }

    private void setDrawable() {
        Resources r = getContext().getResources();

        switch (mPosition) {
            case LEFT_UPPER:
            case LEFT_MIDDLE:
            case LEFT_LOWER:
                mDrawable = r.getDrawable(R.drawable.msg_bubble_right);
                break;

            case RIGHT_UPPER:
            case RIGHT_MIDDLE:
            case RIGHT_LOWER:
                mDrawable = r
                        .getDrawable(AppSettings.get().getCurrentTheme() == AppSettings.Theme.Holo_Dark ? R.drawable.msg_bubble_left_dark
                                : R.drawable.msg_bubble_left_light);
                break;

            // case TOP_LEFT:
            // case TOP_MIDDLE:
            // case TOP_RIGHT:
            // mDrawable = r.getDrawable(R.drawable.msg_bubble_bottom);
            // break;
            //
            // case BOTTOM_LEFT:
            // case BOTTOM_MIDDLE:
            // case BOTTOM_RIGHT:
            // mDrawable = r.getDrawable(R.drawable.msg_bubble_top);
            // break;
        }
        mDrawableIntrinsicWidth = mDrawable.getIntrinsicWidth();
        mDrawableIntrinsicHeight = mDrawable.getIntrinsicHeight();
    }

    @Override
    public void onDraw(Canvas c) {
        super.onDraw(c);
        c.save();
        computeBounds(c);
        mDrawable.draw(c);
        c.restore();
    }

    public void setPosition(int position) {
        mPosition = position;
        setDrawable();
        invalidate();
    }

    public int getPosition() {
        return mPosition;
    }

    public float getCloseOffset() {
        return CORNER_OFFSET * mDensity; // multiply by density to get pixels
    }

    public ImageView asImageView() {
        return this;
    }

    // public void assignContactFromEmail(String emailAddress) {
    // assignContactFromEmail(emailAddress, true);
    // }

    public float getFarOffset() {
        return getCloseOffset() + mDrawableIntrinsicHeight;
    }

    private void computeBounds(Canvas c) {
        final int left = 0;
        final int top = 0;
        final int right = getWidth();
        final int middle = right / 2;
        final int bottom = getHeight();

        final int cornerOffset = (int) getCloseOffset();

        switch (mPosition) {
            case RIGHT_UPPER:
                mDrawable.setBounds(right - mDrawableIntrinsicWidth, cornerOffset, right, top + cornerOffset
                        + mDrawableIntrinsicHeight);
                break;

            case LEFT_UPPER:
                mDrawable.setBounds(left, cornerOffset, mDrawableIntrinsicWidth, top + cornerOffset
                        + mDrawableIntrinsicHeight);
                break;

            case BOTTOM_MIDDLE:
                int halfWidth = mDrawableIntrinsicWidth / 2;
                mDrawable.setBounds(middle - halfWidth,
                        bottom - mDrawableIntrinsicHeight,
                        middle + halfWidth,
                        bottom);
                break;
        }
    }

}