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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/font/ExtendedTextLabel.java (1 of 18352 files). Show all

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java/pkg/sun/font/ExtendedTextLabel.java+146−0
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1+/*
2+ * Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+/*
26+ *
27+ * (C) Copyright IBM Corp. 1998-2003- All Rights Reserved.
28+ */
29+
30+package sun.font;
31+
32+import java.awt.Font;
33+
34+import java.awt.font.GlyphJustificationInfo;
35+import java.awt.font.LineMetrics;
36+
37+import java.awt.geom.Point2D;
38+import java.awt.geom.Rectangle2D;
39+
40+/**
41+ * An extension of TextLabel that maintains information
42+ * about characters.
43+ */
44+
45+public abstract class ExtendedTextLabel extends TextLabel
46+ implements TextLineComponent{
47+ /**
48+ * Return the number of characters represented by this label.
49+ */
50+ public abstract int getNumCharacters();
51+
52+ /**
53+ * Return the line metrics for all text in this label.
54+ */
55+ public abstract CoreMetrics getCoreMetrics();
56+
57+ /**
58+ * Return the x location of the character at the given logical index.
59+ */
60+ public abstract float getCharX(int logicalIndex);
61+
62+ /**
63+ * Return the y location of the character at the given logical index.
64+ */
65+ public abstract float getCharY(int logicalIndex);
66+
67+ /**
68+ * Return the advance of the character at the given logical index.
69+ */
70+ public abstract float getCharAdvance(int logicalIndex);
71+
72+ /**
73+ * Return the visual bounds of the character at the given logical index.
74+ * This bounds encloses all the pixels of the character when the label is rendered
75+ * at x, y.
76+ */
77+ public abstract Rectangle2D getCharVisualBounds(int logicalIndex, float x, float y);
78+
79+ /**
80+ * Return the visual index of the character at the given logical index.
81+ */
82+ public abstract int logicalToVisual(int logicalIndex);
83+
84+ /**
85+ * Return the logical index of the character at the given visual index.
86+ */
87+ public abstract int visualToLogical(int visualIndex);
88+
89+ /**
90+ * Return the logical index of the character, starting with the character at
91+ * logicalStart, whose accumulated advance exceeds width. If the advances of
92+ * all characters do not exceed width, return getNumCharacters. If width is
93+ * less than zero, return logicalStart - 1.
94+ */
95+ public abstract int getLineBreakIndex(int logicalStart, float width);
96+
97+ /**
98+ * Return the accumulated advances of all characters between logicalStart and
99+ * logicalLimit.
100+ */
101+ public abstract float getAdvanceBetween(int logicalStart, int logicalLimit);
102+
103+ /**
104+ * Return whether a caret can exist on the leading edge of the
105+ * character at offset. If the character is part of a ligature
106+ * (for example) a caret may not be appropriate at offset.
107+ */
108+ public abstract boolean caretAtOffsetIsValid(int offset);
109+
110+ /**
111+ * A convenience overload of getCharVisualBounds that defaults the label origin
112+ * to 0, 0.
113+ */
114+ public Rectangle2D getCharVisualBounds(int logicalIndex) {
115+ return getCharVisualBounds(logicalIndex, 0, 0);
116+ }
117+
118+ public abstract TextLineComponent getSubset(int start, int limit, int dir);
119+
120+ /**
121+ * Return the number of justification records this uses.
122+ */
123+ public abstract int getNumJustificationInfos();
124+
125+ /**
126+ * Return GlyphJustificationInfo objects for the characters between
127+ * charStart and charLimit, starting at offset infoStart. Infos
128+ * will be in visual order. All positions between infoStart and
129+ * getNumJustificationInfos will be set. If a position corresponds
130+ * to a character outside the provided range, it is set to null.
131+ */
132+ public abstract void getJustificationInfos(GlyphJustificationInfo[] infos, int infoStart, int charStart, int charLimit);
133+
134+ /**
135+ * Apply deltas to the data in this component, starting at offset
136+ * deltaStart, and return the new component. There are two floats
137+ * for each justification info, for a total of 2 * getNumJustificationInfos.
138+ * The first delta is the left adjustment, the second is the right
139+ * adjustment.
140+ * <p>
141+ * If flags[0] is true on entry, rejustification is allowed. If
142+ * the new component requires rejustification (ligatures were
143+ * formed or split), flags[0] will be set on exit.
144+ */
145+ public abstract TextLineComponent applyJustificationDeltas(float[] deltas, int deltaStart, boolean[] flags);
146+}