/* | |
* Copyright 2012 AndroidPlot.com | |
* | |
* 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.androidplot.util; | |
import android.graphics.Paint; | |
import android.graphics.Rect; | |
public class FontUtils { | |
/** | |
* Determines the height of the tallest character that can be drawn by paint. | |
* @param paint | |
* @return | |
*/ | |
public static float getFontHeight(Paint paint) { | |
Paint.FontMetrics metrics = paint.getFontMetrics(); | |
return (-metrics.ascent) + metrics.descent; | |
//return (-metrics.top) + metrics.bottom; | |
} | |
/** | |
* Get the smallest rect that ecompasses the text to be drawn using paint. | |
* @param text | |
* @param paint | |
* @return | |
*/ | |
public static Rect getPackedStringDimensions(String text, Paint paint) { | |
Rect size = new Rect(); | |
paint.getTextBounds(text, 0, text.length(), size); | |
return size; | |
} | |
/** | |
* Like getPackedStringDimensions except adds extra space to accommodate all | |
* characters that can be drawn regardless of whether or not they exist in text. | |
* This ensures a more uniform appearance for things that have dynamic text. | |
* @param text | |
* @param paint | |
* @return | |
*/ | |
public static Rect getStringDimensions(String text, Paint paint) { | |
Rect size = new Rect(); | |
if(text == null || text.length() == 0) { | |
return null; | |
} | |
paint.getTextBounds(text, 0, text.length(), size); | |
size.bottom = size.top + (int) getFontHeight(paint); | |
return size; | |
} | |
} |