1 /*
2 * Copyright (c) 2016, 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 package hello;
27
28 import javafx.application.Application;
29 import javafx.geometry.Point2D;
30 import javafx.scene.*;
31 import javafx.scene.image.Image;
32 import javafx.scene.image.ImageView;
33 import javafx.scene.paint.*;
34 import javafx.scene.shape.Path;
35 import javafx.scene.text.*;
36 import javafx.stage.Stage;
37
38 import static javafx.scene.paint.Color.*;
39
40 public class HelloTextFlow extends Application {
41 final Path caret = new Path();
42 final Path highlight = new Path();
43
44 int caretPos = -1;
45 int anchorPos = -1;
46
47 @Override public void start(Stage stage) {
48 stage.setTitle("Hello TextFlow");
49
50 Text text1 = mkText(0, 3);
51 Text text2 = mkText(3, 7);
52
53 TextFlow textFlow =
54 new TextFlow(text1,
55 new ImageView(new Image("hello/duke.jpg", 30f, 30f, true, true, false)),
56 text2) {
57 {
58 setCursor(Cursor.TEXT);
59 setOnMousePressed(e -> {
60 HitInfo hit = hitTest(new Point2D(e.getX(), e.getY()));
61 caretPos = anchorPos = hit.getInsertionIndex();
62 caret.getElements().clear();
63 highlight.getElements().clear();
64 text1.setSelectionStart(-1);
65 text1.setSelectionEnd(-1);
66 text2.setSelectionStart(-1);
67 text2.setSelectionEnd(-1);
68 caret.getElements().addAll(caretShape(hit.getCharIndex(), hit.isLeading()));
69 });
70 setOnMouseDragged(e -> {
71 HitInfo hit = hitTest(new Point2D(e.getX(), e.getY()));
72 caretPos = hit.getInsertionIndex();
73 caret.getElements().clear();
74 highlight.getElements().clear();
75 if (anchorPos >= 0 && caretPos != anchorPos) {
76 int i1 = Math.min(caretPos, anchorPos);
77 int i2 = Math.max(caretPos, anchorPos);
78 int len1 = text1.getText().length();
79 if (i1 < len1) {
80 text1.setSelectionStart(i1);
81 if (i2 < len1) {
82 text1.setSelectionEnd(i2);
83 } else {
84 text1.setSelectionEnd(len1);
85 }
86 } else {
87 text1.setSelectionStart(-1);
88 text1.setSelectionEnd(-1);
89 }
90
91 if (i2 > len1 + 1) {
92 if (i1 < len1 + 1) {
93 text2.setSelectionStart(0);
94 } else if (i1 >= len1 + 1) {
95 text2.setSelectionStart(i1 - len1 - 1);
96 }
97 text2.setSelectionEnd(i2 - len1 - 1);
98 } else {
99 text2.setSelectionStart(-1);
100 text2.setSelectionEnd(-1);
101 }
102
103 highlight.getElements().addAll(rangeShape(i1, i2));
104 } else {
105 caret.getElements().addAll(caretShape(hit.getCharIndex(), hit.isLeading()));
106 }
107 });
108
109 caret.setStrokeWidth(1);
110 caret.setFill(BLACK);
111 caret.setStroke(BLACK);
112
113 highlight.setStroke(null);
114 highlight.setFill(LIGHTBLUE);
115 }
116
117 @Override public void layoutChildren() {
118 super.layoutChildren();
119
120 caret.getElements().clear();
121 highlight.getElements().clear();
122 if (anchorPos >= 0 && caretPos != anchorPos) {
123 highlight.getElements().addAll(rangeShape(Math.min(caretPos, anchorPos),
124 Math.max(caretPos, anchorPos)));
125 } else {
126 caret.getElements().addAll(caretShape(caretPos, true));
127 }
128 }
129
130 };
131
132 Scene scene = new Scene(new Group(highlight, textFlow, caret), 600, 400);
133 textFlow.prefWidthProperty().bind(scene.widthProperty());
134 stage.setScene(scene);
135 stage.show();
136 }
137
138 private Text mkText(int start, int end) {
139 StringBuilder sb = new StringBuilder();
140 for (int i = start; i < end; i++) {
141 sb.append(i + ". Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.\n");
142 }
143 Text t = new Text(sb.toString());
144
145 return t;
146 }
147 }