+++ /dev/null
-/*
- * Jexer - Java Text User Interface
- *
- * The MIT License (MIT)
- *
- * Copyright (C) 2016 Kevin Lamonte
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * @author Kevin Lamonte [kevin.lamonte@gmail.com]
- * @version 1
- */
-package jexer;
-
-import static jexer.TKeypress.kbDown;
-import static jexer.TKeypress.kbEnd;
-import static jexer.TKeypress.kbHome;
-import static jexer.TKeypress.kbLeft;
-import static jexer.TKeypress.kbPgDn;
-import static jexer.TKeypress.kbPgUp;
-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 {
-
- /**
- * Text to display.
- */
- private String text;
-
- /**
- * Text converted to lines.
- */
- private List<String> lines;
-
- /**
- * Text color.
- */
- private String colorKey;
-
- /**
- * Vertical scrollbar.
- */
- private TVScroller vScroller;
-
- /**
- * Horizontal scrollbar.
- */
- private THScroller hScroller;
-
- /**
- * Maximum width of a single line.
- */
- private int maxLineWidth;
-
- /**
- * Number of lines between each paragraph.
- */
- 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();
- }
-
- /**
- * Public constructor.
- *
- * @param parent
- * parent widget
- * @param text
- * text on the screen
- * @param x
- * column relative to parent
- * @param y
- * row relative to parent
- * @param width
- * width of text area
- * @param height
- * height of text area
- */
- public TText(final TWidget parent, final String text, final int x,
- final int y, final int width, final int height) {
-
- this(parent, text, x, y, width, height, "ttext");
- }
-
- /**
- * Public constructor.
- *
- * @param parent
- * parent widget
- * @param text
- * text on the screen
- * @param x
- * column relative to parent
- * @param y
- * row relative to parent
- * @param width
- * width of text area
- * @param height
- * height of text area
- * @param colorKey
- * ColorTheme key color to use for foreground text. Default is
- * "ttext"
- */
- public TText(final TWidget parent, final String text, final int x,
- final int y, final int width, final int height,
- final String colorKey) {
-
- // Set parent and window
- super(parent, x, y, width, height);
-
- this.text = text;
- this.colorKey = colorKey;
-
- lines = new LinkedList<String>();
-
- reflow();
- }
-
- /**
- * Draw the text box.
- */
- @Override
- public void draw() {
- // Setup my color
- CellAttributes color = getTheme().getColor(colorKey);
-
- int begin = vScroller.getValue();
- int topY = 0;
- for (int i = begin; i < lines.size(); i++) {
- String line = lines.get(i);
- if (hScroller.getValue() < line.length()) {
- line = line.substring(hScroller.getValue());
- } else {
- line = "";
- }
- String formatString = "%-" + Integer.toString(getWidth() - 1) + "s";
- getScreen().putStringXY(0, topY, String.format(formatString, line),
- color);
- topY++;
-
- if (topY >= (getHeight() - 1)) {
- break;
- }
- }
-
- // Pad the rest with blank lines
- for (int i = topY; i < (getHeight() - 1); i++) {
- getScreen().hLineXY(0, i, getWidth() - 1, ' ', color);
- }
-
- }
-
- /**
- * Handle mouse press events.
- *
- * @param mouse
- * mouse button press event
- */
- @Override
- public void onMouseDown(final TMouseEvent mouse) {
- if (mouse.isMouseWheelUp()) {
- vScroller.decrement();
- return;
- }
- if (mouse.isMouseWheelDown()) {
- vScroller.increment();
- return;
- }
-
- // Pass to children
- super.onMouseDown(mouse);
- }
-
- /**
- * Handle keystrokes.
- *
- * @param keypress
- * keystroke event
- */
- @Override
- public void onKeypress(final TKeypressEvent keypress) {
- if (keypress.equals(kbLeft)) {
- hScroller.decrement();
- } else if (keypress.equals(kbRight)) {
- hScroller.increment();
- } else if (keypress.equals(kbUp)) {
- vScroller.decrement();
- } else if (keypress.equals(kbDown)) {
- vScroller.increment();
- } else if (keypress.equals(kbPgUp)) {
- vScroller.bigDecrement();
- } else if (keypress.equals(kbPgDn)) {
- vScroller.bigIncrement();
- } else if (keypress.equals(kbHome)) {
- vScroller.toTop();
- } else if (keypress.equals(kbEnd)) {
- vScroller.toBottom();
- } else {
- // Pass other keys (tab etc.) on
- super.onKeypress(keypress);
- }
- }
-
-}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff