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-/*
- * 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.
- */
-/**
- * @author Oleg V. Khaschansky
- * @version $Revision$
- *
- */
-
-package org.apache.harmony.awt.gl.font;
-
-import java.awt.font.LineMetrics;
-import java.awt.font.GraphicAttribute;
-import java.awt.*;
-
-/**
- * Date: May 14, 2005
- * Time: 7:44:13 PM
- *
- * This class incapsulates text metrics specific for the text layout or
- * for the separate text segment. Text segment is a text run with the constant direction
- * and attributes like font, decorations, etc. BasicMetrics is also used to store
- * calculated text metrics like advance, ascent or descent. this class is very similar to
- * LineMetrics, but provides some additional info, constructors and is more transparent.
- */
-public class BasicMetrics {
- int baseLineIndex;
-
- float ascent; // Ascent of the font
- float descent; // Descent of the font
- float leading; // External leading
- float advance;
-
- float italicAngle;
- float superScriptOffset;
-
- float underlineOffset;
- float underlineThickness;
-
- float strikethroughOffset;
- float strikethroughThickness;
-
- /**
- * Constructs BasicMetrics from LineMetrics and font
- * @param lm
- * @param font
- */
- BasicMetrics(LineMetrics lm, Font font) {
- ascent = lm.getAscent();
- descent = lm.getDescent();
- leading = lm.getLeading();
-
- underlineOffset = lm.getUnderlineOffset();
- underlineThickness = lm.getUnderlineThickness();
-
- strikethroughOffset = lm.getStrikethroughOffset();
- strikethroughThickness = lm.getStrikethroughThickness();
-
- baseLineIndex = lm.getBaselineIndex();
-
- italicAngle = font.getItalicAngle();
- superScriptOffset = (float) font.getTransform().getTranslateY();
- }
-
- /**
- * Constructs BasicMetrics from GraphicAttribute.
- * It gets ascent and descent from the graphic attribute and
- * computes reasonable defaults for other metrics.
- * @param ga - graphic attribute
- */
- BasicMetrics(GraphicAttribute ga) {
- ascent = ga.getAscent();
- descent = ga.getDescent();
- leading = 2;
-
- baseLineIndex = ga.getAlignment();
-
- italicAngle = 0;
- superScriptOffset = 0;
-
- underlineOffset = Math.max(descent/2, 1);
-
- // Just suggested, should be cap_stem_width or something like that
- underlineThickness = Math.max(ascent/13, 1);
-
- strikethroughOffset = -ascent/2; // Something like middle of the line
- strikethroughThickness = underlineThickness;
- }
-
- /**
- * Copies metrics from the TextMetricsCalculator object.
- * @param tmc - TextMetricsCalculator object
- */
- BasicMetrics(TextMetricsCalculator tmc) {
- ascent = tmc.ascent;
- descent = tmc.descent;
- leading = tmc.leading;
- advance = tmc.advance;
- baseLineIndex = tmc.baselineIndex;
- }
-
- public float getAscent() {
- return ascent;
- }
-
- public float getDescent() {
- return descent;
- }
-
- public float getLeading() {
- return leading;
- }
-
- public float getAdvance() {
- return advance;
- }
-
- public int getBaseLineIndex() {
- return baseLineIndex;
- }
-}