import jexer.bits.CellAttributes;
import jexer.event.TKeypressEvent;
import jexer.event.TMouseEvent;
+import jexer.event.TResizeEvent;
import jexer.teditor.Document;
import jexer.teditor.Line;
import jexer.teditor.Word;
*/
private Document document;
+ /**
+ * The default color for the TEditor class.
+ */
+ private CellAttributes defaultColor = null;
+
+ /**
+ * The topmost line number in the visible area. 0-based.
+ */
+ private int topLine = 0;
+
+ /**
+ * The leftmost column number in the visible area. 0-based.
+ */
+ private int leftColumn = 0;
+
/**
* Public constructor.
*
super(parent, x, y, width, height);
setCursorVisible(true);
- document = new Document(text);
+
+ defaultColor = getTheme().getColor("teditor");
+ document = new Document(text, defaultColor);
}
/**
*/
@Override
public void draw() {
- // Setup my color
- CellAttributes color = getTheme().getColor("teditor");
-
- int lineNumber = document.getLineNumber();
for (int i = 0; i < getHeight(); i++) {
// Background line
- getScreen().hLineXY(0, i, getWidth(), ' ', color);
+ getScreen().hLineXY(0, i, getWidth(), ' ', defaultColor);
// Now draw document's line
- if (lineNumber + i < document.getLineCount()) {
- Line line = document.getLine(lineNumber + i);
+ if (topLine + i < document.getLineCount()) {
+ Line line = document.getLine(topLine + i);
int x = 0;
for (Word word: line.getWords()) {
- getScreen().putStringXY(x, i, word.getText(),
+ // For now, we are cheating: draw outside the left region
+ // if needed and let screen do the clipping.
+ getScreen().putStringXY(x - leftColumn, i, word.getText(),
word.getColor());
x += word.getDisplayLength();
- if (x > getWidth()) {
+ if (x - leftColumn > getWidth()) {
break;
}
}
@Override
public void onMouseDown(final TMouseEvent mouse) {
if (mouse.isMouseWheelUp()) {
- document.up();
+ if (getCursorY() == getHeight() - 1) {
+ if (document.up()) {
+ if (topLine > 0) {
+ topLine--;
+ }
+ alignCursor();
+ }
+ } else {
+ if (topLine > 0) {
+ topLine--;
+ setCursorY(getCursorY() + 1);
+ }
+ }
return;
}
if (mouse.isMouseWheelDown()) {
- document.down();
+ if (getCursorY() == 0) {
+ if (document.down()) {
+ if (topLine < document.getLineNumber()) {
+ topLine++;
+ }
+ alignCursor();
+ }
+ } else {
+ if (topLine < document.getLineCount() - getHeight()) {
+ topLine++;
+ setCursorY(getCursorY() - 1);
+ }
+ }
return;
}
- // TODO: click sets row and column
+ if (mouse.isMouse1()) {
+ // Set the row and column
+ int newLine = topLine + mouse.getY();
+ int newX = leftColumn + mouse.getX();
+ if (newLine > document.getLineCount()) {
+ // Go to the end
+ document.setLineNumber(document.getLineCount() - 1);
+ document.end();
+ if (document.getLineCount() > getHeight()) {
+ setCursorY(getHeight() - 1);
+ } else {
+ setCursorY(document.getLineCount() - 1);
+ }
+ alignCursor();
+ return;
+ }
+
+ document.setLineNumber(newLine);
+ setCursorY(mouse.getY());
+ if (newX > document.getCurrentLine().getDisplayLength()) {
+ document.end();
+ alignCursor();
+ } else {
+ setCursorX(mouse.getX());
+ }
+ return;
+ }
// Pass to children
super.onMouseDown(mouse);
}
+ /**
+ * Align visible cursor with document cursor.
+ */
+ private void alignCursor() {
+ int width = getWidth();
+
+ int desiredX = document.getCursor() - leftColumn;
+ if (desiredX < 0) {
+ // We need to push the screen to the left.
+ leftColumn = document.getCursor();
+ } else if (desiredX > width - 1) {
+ // We need to push the screen to the right.
+ leftColumn = document.getCursor() - (width - 1);
+ }
+
+ /*
+ System.err.println("document cursor " + document.getCursor() +
+ " leftColumn " + leftColumn);
+ */
+
+ setCursorX(document.getCursor() - leftColumn);
+ }
+
/**
* Handle keystrokes.
*
@Override
public void onKeypress(final TKeypressEvent keypress) {
if (keypress.equals(kbLeft)) {
- document.left();
+ if (document.left()) {
+ alignCursor();
+ }
} else if (keypress.equals(kbRight)) {
- document.right();
+ if (document.right()) {
+ alignCursor();
+ }
} else if (keypress.equals(kbUp)) {
- document.up();
+ if (document.up()) {
+ if (getCursorY() > 0) {
+ setCursorY(getCursorY() - 1);
+ } else {
+ if (topLine > 0) {
+ topLine--;
+ }
+ }
+ alignCursor();
+ }
} else if (keypress.equals(kbDown)) {
- document.down();
+ if (document.down()) {
+ if (getCursorY() < getHeight() - 1) {
+ setCursorY(getCursorY() + 1);
+ } else {
+ if (topLine < document.getLineCount() - getHeight()) {
+ topLine++;
+ }
+ }
+ alignCursor();
+ }
} else if (keypress.equals(kbPgUp)) {
- document.up(getHeight() - 1);
+ for (int i = 0; i < getHeight() - 1; i++) {
+ if (document.up()) {
+ if (getCursorY() > 0) {
+ setCursorY(getCursorY() - 1);
+ } else {
+ if (topLine > 0) {
+ topLine--;
+ }
+ }
+ alignCursor();
+ } else {
+ break;
+ }
+ }
} else if (keypress.equals(kbPgDn)) {
- document.down(getHeight() - 1);
+ for (int i = 0; i < getHeight() - 1; i++) {
+ if (document.down()) {
+ if (getCursorY() < getHeight() - 1) {
+ setCursorY(getCursorY() + 1);
+ } else {
+ if (topLine < document.getLineCount() - getHeight()) {
+ topLine++;
+ }
+ }
+ alignCursor();
+ } else {
+ break;
+ }
+ }
} else if (keypress.equals(kbHome)) {
- document.home();
+ if (document.home()) {
+ leftColumn = 0;
+ if (leftColumn < 0) {
+ leftColumn = 0;
+ }
+ setCursorX(0);
+ }
} else if (keypress.equals(kbEnd)) {
- document.end();
+ if (document.end()) {
+ alignCursor();
+ }
} else if (keypress.equals(kbCtrlHome)) {
document.setLineNumber(0);
document.home();
+ topLine = 0;
+ leftColumn = 0;
+ setCursorX(0);
+ setCursorY(0);
} else if (keypress.equals(kbCtrlEnd)) {
document.setLineNumber(document.getLineCount() - 1);
document.end();
+ topLine = document.getLineCount() - getHeight();
+ if (topLine < 0) {
+ topLine = 0;
+ }
+ if (document.getLineCount() > getHeight()) {
+ setCursorY(getHeight() - 1);
+ } else {
+ setCursorY(document.getLineCount() - 1);
+ }
+ alignCursor();
} else if (keypress.equals(kbIns)) {
document.setOverwrite(!document.getOverwrite());
} else if (keypress.equals(kbDel)) {
document.del();
} else if (keypress.equals(kbBackspace)) {
document.backspace();
+ alignCursor();
} else if (!keypress.getKey().isFnKey()
&& !keypress.getKey().isAlt()
&& !keypress.getKey().isCtrl()
}
}
+ /**
+ * Method that subclasses can override to handle window/screen resize
+ * events.
+ *
+ * @param resize resize event
+ */
+ @Override
+ public void onResize(final TResizeEvent resize) {
+ // Change my width/height, and pull the cursor in as needed.
+ if (resize.getType() == TResizeEvent.Type.WIDGET) {
+ setWidth(resize.getWidth());
+ setHeight(resize.getHeight());
+ // See if the cursor is now outside the window, and if so move
+ // things.
+ if (getCursorX() >= getWidth()) {
+ leftColumn += getCursorX() - (getWidth() - 1);
+ setCursorX(getWidth() - 1);
+ }
+ if (getCursorY() >= getHeight()) {
+ topLine += getCursorY() - (getHeight() - 1);
+ setCursorY(getHeight() - 1);
+ }
+ } else {
+ // Let superclass handle it
+ super.onResize(resize);
+ }
+ }
+
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff