| package org.apache.maven.doxia.module.rtf; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| /** |
| * A basic font descriptor using standard PostScript font metrics to compute |
| * text extents. All dimensions returned are in twips. |
| * |
| * @version $Id$ |
| */ |
| class Font |
| { |
| private int size; |
| |
| private FontMetrics metrics; |
| |
| Font( int style, int size /*pts*/ ) |
| throws Exception |
| { |
| this.size = size; |
| metrics = FontMetrics.find( style ); |
| } |
| |
| int ascent() |
| { |
| return toTwips( metrics.ascent ); |
| } |
| |
| int descent() |
| { |
| return toTwips( metrics.descent ); |
| } |
| |
| TextExtents textExtents( String text ) |
| { |
| int i, n; |
| int width = 0; |
| int ascent = 0; |
| int descent = 0; |
| |
| for ( i = 0, n = text.length(); i < n; ++i ) |
| { |
| char c = text.charAt( i ); |
| if ( c > 255 ) |
| { |
| c = ' '; |
| } |
| FontMetrics.CharMetrics charMetrics = this.metrics.charMetrics[c]; |
| width += charMetrics.wx; |
| if ( charMetrics.ury > ascent ) |
| { |
| ascent = charMetrics.ury; |
| } |
| if ( charMetrics.lly < descent ) |
| { |
| descent = charMetrics.lly; |
| } |
| } |
| |
| int height = ascent + Math.abs( descent ); |
| |
| return new TextExtents( toTwips( width ), toTwips( height ), toTwips( ascent ) ); |
| } |
| |
| private int toTwips( int length ) |
| { |
| return (int) Math.rint( (double) length * size / 50. ); |
| } |
| |
| static class TextExtents |
| { |
| |
| int width; |
| |
| int height; |
| |
| int ascent; |
| |
| TextExtents( int width, int height, int ascent ) |
| { |
| this.width = width; |
| this.height = height; |
| this.ascent = ascent; |
| } |
| |
| } |
| } |