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Add support for capturing arguments during return and showing multipl…
…e argument values on separate lines.
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169 changes: 169 additions & 0 deletions
169
src/main/java/org/graphstream/ui/swing/renderer/shape/swing/SwingTextBox.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| /* | ||
| * This file is part of GraphStream <http://graphstream-project.org>. | ||
| * | ||
| * GraphStream is a library whose purpose is to handle static or dynamic | ||
| * graph, create them from scratch, file or any source and display them. | ||
| * | ||
| * This program is free software distributed under the terms of two licenses, the | ||
| * CeCILL-C license that fits European law, and the GNU Lesser General Public | ||
| * License. You can use, modify and/ or redistribute the software under the terms | ||
| * of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following | ||
| * URL <http://www.cecill.info> or under the terms of the GNU LGPL as published by | ||
| * the Free Software Foundation, either version 3 of the License, or (at your | ||
| * option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, but WITHOUT ANY | ||
| * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A | ||
| * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| * The fact that you are presently reading this means that you have had | ||
| * knowledge of the CeCILL-C and LGPL licenses and that you accept their terms. | ||
| */ | ||
|
|
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| /** | ||
| * @author Antoine Dutot <[email protected]> | ||
| * @author Guilhelm Savin <[email protected]> | ||
| * @author Hicham Brahimi <[email protected]> | ||
| */ | ||
|
|
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| package org.graphstream.ui.swing.renderer.shape.swing; | ||
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| import org.graphstream.ui.swing.Backend; | ||
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| import java.awt.*; | ||
| import java.awt.font.TextLayout; | ||
| import java.awt.geom.Rectangle2D; | ||
| import java.awt.geom.RoundRectangle2D; | ||
| import java.util.Objects; | ||
|
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| @SuppressWarnings("unused") | ||
| class SwingTextBox extends TextBox { | ||
|
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| Font font; | ||
| Color textColor; | ||
| Color bgColor; | ||
| boolean rounded; | ||
| double padx; | ||
| double pady; | ||
|
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| TextLayout[] text; | ||
| double width; | ||
| double height; | ||
|
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| public SwingTextBox(Font font, Color textColor, Color bgColor, boolean rounded, double padx, double pady) { | ||
| this.font = font; | ||
| this.textColor = textColor; | ||
| this.bgColor = bgColor; | ||
| this.rounded = rounded; | ||
| this.padx = padx; | ||
| this.pady = pady; | ||
|
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| this.text = null; | ||
| this.textData = null; | ||
| this.width = 0.0; | ||
| this.height = 0.0; | ||
| } | ||
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|
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| /** | ||
| * Changes the text and compute its bounds. This method tries to avoid recomputing bounds | ||
| * if the text does not really changed. | ||
| */ | ||
| public void setText(String text, Backend backend) { | ||
| // DENDROLOJ EDIT: | ||
| // Add support for rendering multiple lines of text. | ||
|
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| if (text == null || text.isBlank()) { | ||
| this.textData = null; | ||
| this.text = null; | ||
| this.width = 0.0; | ||
| this.height = 0.0; | ||
| return; | ||
| } | ||
| if (Objects.equals(text, textData)) { | ||
| return; | ||
| } | ||
|
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| // As the text is not rendered using the default affine transform, but using | ||
| // the identity transform, and as the FontRenderContext uses the current | ||
| // transform, we use a predefined default font render context initialized | ||
| // with an identity transform here. | ||
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| // Note: There must be at least one line because zero lines would mean that the text was blank, which was checked before. | ||
| String[] lines = text.split("\n"); | ||
| this.textData = text; | ||
| this.text = new TextLayout[lines.length]; | ||
| this.width = 0.0; | ||
| this.height = 0.0; | ||
| for (int i = 0; i < lines.length; i++) { | ||
| TextLayout line = new TextLayout(lines[i], font, TextBox.defaultFontRenderContext); | ||
| this.text[i] = line; | ||
| this.width = Math.max(this.width, line.getBounds().getWidth()); | ||
| this.height += line.getAscent() + line.getDescent(); | ||
| } | ||
| } | ||
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| @Override | ||
| public String getText() { | ||
| return textData; | ||
| } | ||
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| @Override | ||
| public double getWidth() { | ||
| return width; | ||
| } | ||
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| @Override | ||
| public double getHeight() { | ||
| return height; | ||
| } | ||
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| @Override | ||
| public double getDescent() { | ||
| if (text != null) | ||
| return text[0].getDescent(); | ||
| else | ||
| return 0; | ||
| } | ||
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| @Override | ||
| public double getAscent() { | ||
| if (text != null) | ||
| return text[0].getAscent(); | ||
| else | ||
| return 0; | ||
| } | ||
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| @Override | ||
| public void render(Backend backend, double xLeft, double yBottom) { | ||
| if (text != null) { | ||
| Graphics2D g = backend.graphics2D(); | ||
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| if (bgColor != null) { | ||
| double a = getAscent(); | ||
| double h = getHeight(); | ||
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| g.setColor(bgColor); | ||
| if (rounded) { | ||
| g.fill(new RoundRectangle2D.Double(xLeft - padx, yBottom - (a + pady), getWidth() + 1 + (padx + padx), h + (pady + pady), 6, 6)); | ||
| } else { | ||
| g.fill(new Rectangle2D.Double(xLeft - padx, yBottom - (a + pady), getWidth() + 1 + (padx + padx), h + (pady + pady))); | ||
| } | ||
| } | ||
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| // DENDROLOJ EDIT: | ||
| // Add support for rendering multiple lines of text. | ||
| g.setColor(textColor); | ||
| yBottom -= getAscent(); | ||
| for (TextLayout line : text) { | ||
| yBottom += line.getAscent(); | ||
| line.draw(g, (float) xLeft, (float) yBottom); | ||
| yBottom += line.getDescent(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } |
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