127 lines
4.6 KiB
Java
127 lines
4.6 KiB
Java
/*
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* Copyright (c) 1998, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* (C) Copyright IBM Corp. 1998-2003 All Rights Reserved
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*
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*/
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package sun.font;
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import java.awt.Graphics2D;
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import java.awt.Rectangle;
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import java.awt.Shape;
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import java.awt.font.GlyphJustificationInfo;
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import java.awt.font.FontRenderContext;
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import java.awt.font.LineMetrics;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Rectangle2D;
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public interface TextLineComponent {
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public CoreMetrics getCoreMetrics();
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public void draw(Graphics2D g2d, float x, float y);
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public Rectangle2D getCharVisualBounds(int index);
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public Rectangle2D getVisualBounds();
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public float getAdvance();
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public Shape getOutline(float x, float y);
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public int getNumCharacters();
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public float getCharX(int index);
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public float getCharY(int index);
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public float getCharAdvance(int index);
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public boolean caretAtOffsetIsValid(int index);
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// measures characters in context, in logical order
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public int getLineBreakIndex(int start, float width);
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// measures characters in context, in logical order
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public float getAdvanceBetween(int start, int limit);
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public Rectangle2D getLogicalBounds();
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public Rectangle2D getItalicBounds();
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public AffineTransform getBaselineTransform();
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// return true if this wraps a glyphvector with no baseline rotation and
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// has no styles requiring complex pixel bounds calculations.
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public boolean isSimple();
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// return the pixel bounds if we wrap a glyphvector, else throw an
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// internal error
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public Rectangle getPixelBounds(FontRenderContext frc, float x, float y);
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/**
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* Force subset characters to run left-to-right.
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*/
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public static final int LEFT_TO_RIGHT = 0;
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/**
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* Force subset characters to run right-to-left.
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*/
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public static final int RIGHT_TO_LEFT = 1;
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/**
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* Leave subset character direction and ordering unchanged.
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*/
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public static final int UNCHANGED = 2;
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/**
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* Return a TextLineComponent for the characters in the range
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* start, limit. The range is relative to this TextLineComponent
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* (ie, the first character is at 0).
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* @param dir one of the constants LEFT_TO_RIGHT, RIGHT_TO_LEFT, or UNCHANGED
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*/
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public TextLineComponent getSubset(int start, int limit, int dir);
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/**
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* Return the number of justification records this uses.
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*/
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public int getNumJustificationInfos();
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/**
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* Return GlyphJustificationInfo objects for the characters between
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* charStart and charLimit, starting at offset infoStart. Infos
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* will be in visual order. All positions between infoStart and
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* getNumJustificationInfos will be set. If a position corresponds
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* to a character outside the provided range, it is set to null.
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*/
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public void getJustificationInfos(GlyphJustificationInfo[] infos, int infoStart, int charStart, int charLimit);
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/**
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* Apply deltas to the data in this component, starting at offset
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* deltaStart, and return the new component. There are two floats
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* for each justification info, for a total of 2 * getNumJustificationInfos.
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* The first delta is the left adjustment, the second is the right
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* adjustment.
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* <p>
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* If flags[0] is true on entry, rejustification is allowed. If
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* the new component requires rejustification (ligatures were
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* formed or split), flags[0] will be set on exit.
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*/
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public TextLineComponent applyJustificationDeltas(float[] deltas, int deltaStart, boolean[] flags);
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}
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