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/*
* Copyright (C) 2008 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.camera;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;
import android.text.Layout;
import android.util.AttributeSet;
import android.widget.TextView;
/**
* TextView that draws a bubble behind the text. We cannot use a
* LineBackgroundSpan because we want to make the bubble taller than the text
* and TextView's clip is too aggressive.
*/
public class ActionMenuButton extends TextView {
private static final int CORNER_RADIUS = 8;
private static final int PADDING_H = 5;
private static final int PADDING_V = 1;
private final RectF mRect = new RectF();
private Paint mPaint;
public ActionMenuButton(Context context) {
super(context);
init();
}
public ActionMenuButton(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public ActionMenuButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
private void init() {
setFocusable(true);
// We need extra padding below to prevent the bubble being cut.
setPadding(PADDING_H, 0, PADDING_H, PADDING_V);
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mPaint.setColor(getContext().getResources()
.getColor(R.color.bubble_dark_background));
}
@Override
protected void drawableStateChanged() {
invalidate();
super.drawableStateChanged();
}
@Override
public void draw(Canvas canvas) {
final Layout layout = getLayout();
final RectF rect = mRect;
final int left = getCompoundPaddingLeft();
final int top = getExtendedPaddingTop();
rect.set(left + layout.getLineLeft(0) - PADDING_H,
top + layout.getLineTop(0) - PADDING_V,
Math.min(left + layout.getLineRight(0) + PADDING_H,
mScrollX + mRight - mLeft),
top + layout.getLineBottom(0) + PADDING_V);
canvas.drawRoundRect(rect, CORNER_RADIUS, CORNER_RADIUS, mPaint);
super.draw(canvas);
}
}
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