/*
* 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.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.FrameLayout;
import org.getlantern.firetweet.util.ThemeUtils;
import org.getlantern.firetweet.util.accessor.ViewAccessor;
public class LeftDrawerFrameLayout extends FrameLayout {
private final Paint mClipPaint = new Paint();
private float mScrollScale, mPercentOpen;
private boolean mClipEnabled;
public LeftDrawerFrameLayout(final Context context) {
this(context, null);
}
public LeftDrawerFrameLayout(final Context context, final AttributeSet attrs) {
this(context, attrs, 0);
}
public LeftDrawerFrameLayout(final Context context, final AttributeSet attrs, final int defStyle) {
super(context, attrs, defStyle);
final Drawable bg = ThemeUtils.getWindowBackground(context, ThemeUtils.getDrawerThemeResource(context));
ViewAccessor.setBackground(this, bg);
setWillNotDraw(false);
mClipPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
}
@Override
public boolean hasOverlappingRendering() {
return mClipEnabled;
}
public void setClipEnabled(final boolean clipEnabled) {
mClipEnabled = clipEnabled;
if (!clipEnabled) {
setAlpha(1);
}
}
public void setPercentOpen(final float percentOpen) {
if (mPercentOpen == percentOpen) return;
mPercentOpen = percentOpen;
if (mClipEnabled) {
setAlpha(1 - (1 - mPercentOpen) * (1.0f / 0xff));
invalidate();
}
}
public void setScrollScale(final float scrollScale) {
mScrollScale = scrollScale;
}
@Override
protected void dispatchDraw(final Canvas canvas) {
super.dispatchDraw(canvas);
if (mClipEnabled && mPercentOpen > 0 && mPercentOpen < 1) {
final int left = Math.round(getWidth() * (1 - (1 - mPercentOpen) * (1 - mScrollScale)));
canvas.drawRect(left, getTop(), getRight(), getBottom(), mClipPaint);
}
}
}