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/*
* Copyright (C) 2016 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.graphics;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Paint.FontMetricsInt;
import android.graphics.drawable.Drawable;
import android.text.style.DynamicDrawableSpan;
/**
* {@link DynamicDrawableSpan} which draws a drawable tinted with the current paint color.
*/
public class TintedDrawableSpan extends DynamicDrawableSpan {
private final Drawable mDrawable;
private int mOldTint;
public TintedDrawableSpan(Context context, int resourceId) {
super(ALIGN_BOTTOM);
mDrawable = context.getDrawable(resourceId);
mOldTint = 0;
mDrawable.setTint(0);
}
@Override
public int getSize(Paint paint, CharSequence text, int start, int end, FontMetricsInt fm) {
fm = fm == null ? paint.getFontMetricsInt() : fm;
int iconSize = fm.bottom - fm.top;
mDrawable.setBounds(0, 0, iconSize, iconSize);
return super.getSize(paint, text, start, end, fm);
}
@Override
public void draw(Canvas canvas, CharSequence text,
int start, int end, float x, int top, int y, int bottom, Paint paint) {
int color = paint.getColor();
if (mOldTint != color) {
mOldTint = color;
mDrawable.setTint(mOldTint);
}
super.draw(canvas, text, start, end, x, top, y, bottom, paint);
}
@Override
public Drawable getDrawable() {
return mDrawable;
}
}
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