/*
* Firetweet - Twitter client for Android
*
* Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.getlantern.firetweet.view;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ProgressBar;
import org.getlantern.firetweet.R;
import org.getlantern.firetweet.util.ColorUtils;
import org.getlantern.firetweet.util.ThemeUtils;
import org.getlantern.firetweet.util.accessor.ViewAccessor;
import org.getlantern.firetweet.view.iface.IHomeActionButton;
public class HomeActionButtonCompat extends FrameLayout implements IHomeActionButton {
private final ImageView mIconView;
private final ProgressBar mProgressBar;
private final FloatingActionDrawable mBackground;
public HomeActionButtonCompat(final Context context) {
this(context, null);
}
public HomeActionButtonCompat(final Context context, final AttributeSet attrs) {
this(context, attrs, 0);
}
public HomeActionButtonCompat(final Context context, final AttributeSet attrs, final int defStyle) {
super(context, attrs, defStyle);
inflate(ThemeUtils.getActionBarContext(context), R.layout.action_item_home_actions_compat, this);
mIconView = (ImageView) findViewById(android.R.id.icon);
mProgressBar = (ProgressBar) findViewById(android.R.id.progress);
final Resources resources = getResources();
final int radius = resources.getDimensionPixelSize(R.dimen.element_spacing_small);
mBackground = new FloatingActionDrawable(this, radius);
ViewAccessor.setBackground(this, mBackground);
}
@Override
public void setButtonColor(int color) {
mBackground.setColor(color);
final View child = getChildAt(0);
if (child instanceof FrameLayout) {
final Drawable foreground = ((FrameLayout) child).getForeground();
if (foreground != null) {
foreground.setColorFilter(ColorUtils.getContrastYIQ(color, 192), Mode.MULTIPLY);
}
}
}
public void setIcon(final Bitmap bm) {
mIconView.setImageBitmap(bm);
}
public void setIcon(final Drawable drawable) {
mIconView.setImageDrawable(drawable);
}
public void setIcon(final int resId) {
mIconView.setImageResource(resId);
}
@Override
public void setIconColor(int color, Mode mode) {
mIconView.setColorFilter(color, mode);
}
public void setShowProgress(final boolean showProgress) {
mProgressBar.setVisibility(showProgress ? View.VISIBLE : View.GONE);
mIconView.setVisibility(showProgress ? View.GONE : View.VISIBLE);
}
public void setTitle(final CharSequence title) {
setContentDescription(title);
}
public void setTitle(final int title) {
setTitle(getResources().getText(title));
}
private static class FloatingActionDrawable extends Drawable {
private static final int SHADOW_START_COLOR = 0x37000000;
private final View mView;
private final float mRadius;
private Bitmap mBitmap;
private Paint mColorPaint;
private Rect mBounds;
public FloatingActionDrawable(View view, float radius) {
mView = view;
mRadius = radius;
mColorPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mBounds = new Rect();
}
@Override
public void draw(Canvas canvas) {
if (mBitmap != null) {
canvas.drawBitmap(mBitmap, 0, 0, null);
}
final Rect bounds = mBounds;
if (!bounds.isEmpty()) {
final RectF rect = new RectF(mView.getPaddingLeft(), mView.getPaddingTop(),
bounds.width() - mView.getPaddingRight(), bounds.height() - mView.getPaddingBottom());
canvas.drawOval(rect, mColorPaint);
}
}
@Override
public void setAlpha(int alpha) {
// No-op
}
@Override
public void setColorFilter(ColorFilter cf) {
mColorPaint.setColorFilter(cf);
invalidateSelf();
}
@Override
public int getOpacity() {
return PixelFormat.TRANSLUCENT;
}
@Override
protected void onBoundsChange(Rect bounds) {
super.onBoundsChange(bounds);
mBounds.set(bounds);
updateBitmap();
invalidateSelf();
}
@Override
public int getIntrinsicWidth() {
return -1;
}
@Override
public int getIntrinsicHeight() {
return -1;
}
public void setColor(int color) {
mColorPaint.setColor(color);
updateBitmap();
invalidateSelf();
}
private void updateBitmap() {
final Rect bounds = mBounds;
if (bounds.isEmpty()) return;
mBitmap = Bitmap.createBitmap(bounds.width(), bounds.height(), Config.ARGB_8888);
final Canvas canvas = new Canvas(mBitmap);
final Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setColor(0xFF000000 | mColorPaint.getColor());
final float radius = mRadius;
paint.setShadowLayer(radius, 0, radius * 1.5f / 2, SHADOW_START_COLOR);
final RectF rect = new RectF(mView.getPaddingLeft(), mView.getPaddingTop(),
bounds.width() - mView.getPaddingRight(), bounds.height() - mView.getPaddingBottom());
canvas.drawOval(rect, paint);
paint.setShadowLayer(0, 0, 0, 0);
paint.setXfermode(new PorterDuffXfermode(Mode.CLEAR));
canvas.drawOval(rect, paint);
}
}
}