*
* The MIT License (MIT)
*
- * Copyright (C) 2017 Kevin Lamonte
+ * Copyright (C) 2019 Kevin Lamonte
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
*/
package jexer;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.List;
+
+import jexer.bits.CellAttributes;
+import jexer.bits.StringUtils;
+import jexer.event.TKeypressEvent;
+import jexer.event.TMouseEvent;
import static jexer.TKeypress.kbDown;
import static jexer.TKeypress.kbEnd;
import static jexer.TKeypress.kbHome;
import static jexer.TKeypress.kbRight;
import static jexer.TKeypress.kbUp;
-import java.util.LinkedList;
-import java.util.List;
-
-import jexer.bits.CellAttributes;
-import jexer.event.TKeypressEvent;
-import jexer.event.TMouseEvent;
-
/**
* TText implements a simple scrollable text area. It reflows automatically on
* resize.
*/
-public final class TText extends TWidget {
+public class TText extends TScrollableWidget {
+
+ // ------------------------------------------------------------------------
+ // Constants --------------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
- * Text to display.
+ * Available text justifications.
*/
- private String text;
+ public enum Justification {
+
+ /**
+ * Not justified at all, use spacing as provided by the client.
+ */
+ NONE,
+
+ /**
+ * Left-justified text.
+ */
+ LEFT,
+
+ /**
+ * Centered text.
+ */
+ CENTER,
+
+ /**
+ * Right-justified text.
+ */
+ RIGHT,
+
+ /**
+ * Fully-justified text.
+ */
+ FULL,
+ }
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
- * Text converted to lines.
+ * How to justify the text.
*/
- private List<String> lines;
+ private Justification justification = Justification.LEFT;
/**
- * Text color.
+ * Text to display.
*/
- private String colorKey;
+ private String text;
/**
- * Vertical scrollbar.
+ * Text converted to lines.
*/
- private TVScroller vScroller;
+ private List<String> lines;
/**
- * Horizontal scrollbar.
+ * Text color.
*/
- private THScroller hScroller;
+ private String colorKey;
/**
* Maximum width of a single line.
*/
private int lineSpacing = 1;
- /**
- * Convenience method used by TWindowLoggerOutput.
- *
- * @param line new line to add
- */
- public void addLine(final String line) {
- if (text.length() == 0) {
- text = line;
- } else {
- text += "\n\n";
- text += line;
- }
- reflow();
- }
-
- /**
- * Recompute the bounds for the scrollbars.
- */
- private void computeBounds() {
- maxLineWidth = 0;
- for (String line : lines) {
- if (line.length() > maxLineWidth) {
- maxLineWidth = line.length();
- }
- }
-
- vScroller.setBottomValue((lines.size() - getHeight()) + 1);
- if (vScroller.getBottomValue() < 0) {
- vScroller.setBottomValue(0);
- }
- if (vScroller.getValue() > vScroller.getBottomValue()) {
- vScroller.setValue(vScroller.getBottomValue());
- }
-
- hScroller.setRightValue((maxLineWidth - getWidth()) + 1);
- if (hScroller.getRightValue() < 0) {
- hScroller.setRightValue(0);
- }
- if (hScroller.getValue() > hScroller.getRightValue()) {
- hScroller.setValue(hScroller.getRightValue());
- }
- }
-
- /**
- * Insert newlines into a string to wrap it to a maximum column. Terminate
- * the final string with a newline. Note that interior newlines are
- * converted to spaces.
- *
- * @param str the string
- * @param n the maximum number of characters in a line
- * @return the wrapped string
- */
- private String wrap(final String str, final int n) {
- assert (n > 0);
-
- StringBuilder sb = new StringBuilder();
- StringBuilder word = new StringBuilder();
- int col = 0;
- for (int i = 0; i < str.length(); i++) {
- char ch = str.charAt(i);
- if (ch == '\n') {
- ch = ' ';
- }
- if (ch == ' ') {
- sb.append(word.toString());
- sb.append(ch);
- if (word.length() >= (n - 1)) {
- sb.append('\n');
- col = 0;
- }
- word = new StringBuilder();
- } else {
- word.append(ch);
- }
-
- col++;
- if (col >= (n - 1)) {
- sb.append('\n');
- col = 0;
- }
- }
- sb.append(word.toString());
- sb.append('\n');
- return sb.toString();
- }
-
- /**
- * Resize text and scrollbars for a new width/height.
- */
- public void reflow() {
- // Reset the lines
- lines.clear();
-
- // Break up text into paragraphs
- String[] paragraphs = text.split("\n\n");
- for (String p : paragraphs) {
- String paragraph = wrap(p, getWidth() - 1);
- for (String line : paragraph.split("\n")) {
- lines.add(line);
- }
- for (int i = 0; i < lineSpacing; i++) {
- lines.add("");
- }
- }
-
- // Start at the top
- if (vScroller == null) {
- vScroller = new TVScroller(this, getWidth() - 1, 0, getHeight() - 1);
- vScroller.setTopValue(0);
- vScroller.setValue(0);
- } else {
- vScroller.setX(getWidth() - 1);
- vScroller.setHeight(getHeight() - 1);
- }
- vScroller.setBigChange(getHeight() - 1);
-
- // Start at the left
- if (hScroller == null) {
- hScroller = new THScroller(this, 0, getHeight() - 1, getWidth() - 1);
- hScroller.setLeftValue(0);
- hScroller.setValue(0);
- } else {
- hScroller.setY(getHeight() - 1);
- hScroller.setWidth(getWidth() - 1);
- }
- hScroller.setBigChange(getWidth() - 1);
-
- computeBounds();
- }
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
/**
* Public constructor.
this.text = text;
this.colorKey = colorKey;
- lines = new LinkedList<String>();
+ lines = new ArrayList<String>();
- reflow();
+ vScroller = new TVScroller(this, getWidth() - 1, 0,
+ Math.max(1, getHeight() - 1));
+ hScroller = new THScroller(this, 0, getHeight() - 1,
+ Math.max(1, getWidth() - 1));
+ reflowData();
+ }
+
+ // ------------------------------------------------------------------------
+ // TScrollableWidget ------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Override TWidget's width: we need to set child widget widths.
+ *
+ * @param width new widget width
+ */
+ @Override
+ public void setWidth(final int width) {
+ super.setWidth(width);
+ if (hScroller != null) {
+ hScroller.setWidth(getWidth() - 1);
+ }
+ if (vScroller != null) {
+ vScroller.setX(getWidth() - 1);
+ }
+ }
+
+ /**
+ * Override TWidget's height: we need to set child widget heights.
+ * time.
+ *
+ * @param height new widget height
+ */
+ @Override
+ public void setHeight(final int height) {
+ super.setHeight(height);
+ if (hScroller != null) {
+ hScroller.setY(getHeight() - 1);
+ }
+ if (vScroller != null) {
+ vScroller.setHeight(getHeight() - 1);
+ }
}
/**
int topY = 0;
for (int i = begin; i < lines.size(); i++) {
String line = lines.get(i);
- if (hScroller.getValue() < line.length()) {
+ if (hScroller.getValue() < StringUtils.width(line)) {
line = line.substring(hScroller.getValue());
} else {
line = "";
}
- String formatString = "%-" + Integer.toString(getWidth() - 1) + "s";
- getScreen().putStringXY(0, topY, String.format(formatString, line),
- color);
+ if (getWidth() > 3) {
+ String formatString = "%-" + Integer.toString(getWidth() - 1) + "s";
+ putStringXY(0, topY, String.format(formatString, line), color);
+ }
topY++;
if (topY >= (getHeight() - 1)) {
// Pad the rest with blank lines
for (int i = topY; i < (getHeight() - 1); i++) {
- getScreen().hLineXY(0, i, getWidth() - 1, ' ', color);
+ hLineXY(0, i, getWidth() - 1, ' ', color);
}
}
}
}
+ /**
+ * Resize text and scrollbars for a new width/height.
+ */
+ @Override
+ public void reflowData() {
+ // Reset the lines
+ lines.clear();
+
+ // Break up text into paragraphs
+ String[] paragraphs = text.split("\n\n");
+ for (String p : paragraphs) {
+ switch (justification) {
+ case NONE:
+ lines.addAll(Arrays.asList(p.split("\n")));
+ break;
+ case LEFT:
+ lines.addAll(jexer.bits.StringUtils.left(p,
+ getWidth() - 1));
+ break;
+ case CENTER:
+ lines.addAll(jexer.bits.StringUtils.center(p,
+ getWidth() - 1));
+ break;
+ case RIGHT:
+ lines.addAll(jexer.bits.StringUtils.right(p,
+ getWidth() - 1));
+ break;
+ case FULL:
+ lines.addAll(jexer.bits.StringUtils.full(p,
+ getWidth() - 1));
+ break;
+ }
+
+ for (int i = 0; i < lineSpacing; i++) {
+ lines.add("");
+ }
+ }
+ computeBounds();
+ }
+
+ // ------------------------------------------------------------------------
+ // TText ------------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Set the text.
+ *
+ * @param text new text to display
+ */
+ public void setText(final String text) {
+ this.text = text;
+ reflowData();
+ }
+
+ /**
+ * Get the text.
+ *
+ * @return the text
+ */
+ public String getText() {
+ return text;
+ }
+
+ /**
+ * Convenience method used by TWindowLoggerOutput.
+ *
+ * @param line new line to add
+ */
+ public void addLine(final String line) {
+ if (StringUtils.width(text) == 0) {
+ text = line;
+ } else {
+ text += "\n\n";
+ text += line;
+ }
+ reflowData();
+ }
+
+ /**
+ * Recompute the bounds for the scrollbars.
+ */
+ private void computeBounds() {
+ maxLineWidth = 0;
+ for (String line : lines) {
+ if (StringUtils.width(line) > maxLineWidth) {
+ maxLineWidth = StringUtils.width(line);
+ }
+ }
+
+ vScroller.setTopValue(0);
+ vScroller.setBottomValue((lines.size() - getHeight()) + 1);
+ if (vScroller.getBottomValue() < 0) {
+ vScroller.setBottomValue(0);
+ }
+ if (vScroller.getValue() > vScroller.getBottomValue()) {
+ vScroller.setValue(vScroller.getBottomValue());
+ }
+
+ hScroller.setLeftValue(0);
+ hScroller.setRightValue((maxLineWidth - getWidth()) + 1);
+ if (hScroller.getRightValue() < 0) {
+ hScroller.setRightValue(0);
+ }
+ if (hScroller.getValue() > hScroller.getRightValue()) {
+ hScroller.setValue(hScroller.getRightValue());
+ }
+ }
+
+ /**
+ * Set justification.
+ *
+ * @param justification NONE, LEFT, CENTER, RIGHT, or FULL
+ */
+ public void setJustification(final Justification justification) {
+ this.justification = justification;
+ reflowData();
+ }
+
+ /**
+ * Left-justify the text.
+ */
+ public void leftJustify() {
+ justification = Justification.LEFT;
+ reflowData();
+ }
+
+ /**
+ * Center-justify the text.
+ */
+ public void centerJustify() {
+ justification = Justification.CENTER;
+ reflowData();
+ }
+
+ /**
+ * Right-justify the text.
+ */
+ public void rightJustify() {
+ justification = Justification.RIGHT;
+ reflowData();
+ }
+
+ /**
+ * Fully-justify the text.
+ */
+ public void fullJustify() {
+ justification = Justification.FULL;
+ reflowData();
+ }
+
+ /**
+ * Un-justify the text.
+ */
+ public void unJustify() {
+ justification = Justification.NONE;
+ reflowData();
+ }
+
}
git://git.nikiroo.be / fanfix.git / blobdiff