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/*
* Copyright (C) 2018 The Android Open Source Project
*
* 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.
*/
package com.android.launcher3.views;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.RectF;
import android.util.AttributeSet;
import android.widget.FrameLayout;
import com.android.launcher3.R;
import com.android.launcher3.util.Themes;
/**
* View with top rounded corners.
*/
public class TopRoundedCornerView extends SpringRelativeLayout {
private final RectF mRect = new RectF();
private final Path mClipPath = new Path();
private float[] mRadii;
private final Paint mNavBarScrimPaint;
private int mNavBarScrimHeight = 0;
public TopRoundedCornerView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
int radius = getResources().getDimensionPixelSize(R.dimen.bg_round_rect_radius);
mRadii = new float[] {radius, radius, radius, radius, 0, 0, 0, 0};
mNavBarScrimPaint = new Paint();
mNavBarScrimPaint.setColor(Themes.getAttrColor(context, R.attr.allAppsNavBarScrimColor));
}
public TopRoundedCornerView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public void setNavBarScrimHeight(int height) {
if (mNavBarScrimHeight != height) {
mNavBarScrimHeight = height;
invalidate();
}
}
@Override
public void draw(Canvas canvas) {
canvas.save();
canvas.clipPath(mClipPath);
super.draw(canvas);
canvas.restore();
if (mNavBarScrimHeight > 0) {
canvas.drawRect(0, getHeight() - mNavBarScrimHeight, getWidth(), getHeight(),
mNavBarScrimPaint);
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
mRect.set(0, 0, getMeasuredWidth(), getMeasuredHeight());
mClipPath.reset();
mClipPath.addRoundRect(mRect, mRadii, Path.Direction.CW);
}
}
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