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/*
* Copyright (C) 2012 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.dialer.dialpad;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.Paint.Align;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.TextView;
import com.android.dialer.R;
public class SmartDialTextView extends TextView {
private final float mPadding;
private final float mExtraPadding;
private static final String HIGH_CONFIDENCE_HINT = "\u2026";
public SmartDialTextView(Context context) {
this(context, null);
}
public SmartDialTextView(Context context, AttributeSet attrs) {
super(context, attrs);
mPadding = getResources().getDimension(R.dimen.smartdial_suggestions_padding);
mExtraPadding = getResources().getDimension(R.dimen.smartdial_suggestions_extra_padding);
}
/**
* Returns a drawable that resembles a sideways overflow icon. Used to indicate the presence
* of a high confidence match.
*
* @param res Resources that we will use to create our BitmapDrawable with
* @param textSize Size of drawable to create
* @param color Color of drawable to create
* @return The drawable drawn according to the given parameters
*/
public static Drawable getHighConfidenceHintDrawable(final Resources res, final float textSize,
final int color) {
final Paint paint = new Paint();
paint.setAntiAlias(true);
paint.setTextAlign(Align.CENTER);
paint.setTextSize(textSize);
paint.setColor(color);
final Rect bounds = new Rect();
paint.getTextBounds(HIGH_CONFIDENCE_HINT, 0, HIGH_CONFIDENCE_HINT.length(), bounds);
final int width = bounds.width();
final int height = bounds.height();
final Bitmap buffer = Bitmap.createBitmap(
width, (height * 3 / 2), Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(buffer);
canvas.drawText(HIGH_CONFIDENCE_HINT, width / 2, height, paint);
return new BitmapDrawable(res, buffer);
}
@Override
protected void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
super.onTextChanged(text, start, lengthBefore, lengthAfter);
rescaleText(getWidth());
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
rescaleText(w);
}
private void rescaleText(int w) {
if (w == 0) {
return;
}
setTextScaleX(1);
final Paint paint = getPaint();
float width = w - 2 * mPadding - 2 * mExtraPadding;
float ratio = width / paint.measureText(getText().toString());
if (ratio < 1.0f) {
setTextScaleX(ratio);
}
}
}
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