/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.graphics;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Paint.FontMetricsInt;
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import android.graphics.drawable.Drawable;
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import android.text.style.DynamicDrawableSpan;
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/**
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* {@link DynamicDrawableSpan} which draws a drawable tinted with the current paint color.
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*/
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public class TintedDrawableSpan extends DynamicDrawableSpan {
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private final Drawable mDrawable;
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private int mOldTint;
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public TintedDrawableSpan(Context context, int resourceId) {
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super(ALIGN_BOTTOM);
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mDrawable = context.getDrawable(resourceId).mutate();
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mOldTint = 0;
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mDrawable.setTint(0);
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}
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@Override
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public int getSize(Paint paint, CharSequence text, int start, int end, FontMetricsInt fm) {
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fm = fm == null ? paint.getFontMetricsInt() : fm;
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int iconSize = fm.bottom - fm.top;
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mDrawable.setBounds(0, 0, iconSize, iconSize);
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return super.getSize(paint, text, start, end, fm);
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}
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@Override
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public void draw(Canvas canvas, CharSequence text,
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int start, int end, float x, int top, int y, int bottom, Paint paint) {
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int color = paint.getColor();
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if (mOldTint != color) {
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mOldTint = color;
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mDrawable.setTint(mOldTint);
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}
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super.draw(canvas, text, start, end, x, top, y, bottom, paint);
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}
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@Override
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public Drawable getDrawable() {
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return mDrawable;
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}
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}
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