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feat(renderer): add word selection support in CustomMultiLineTextArea

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extio-de
2026-01-25 19:31:29 +01:00
parent d46e1468ec
commit eae2e30684
1 changed files with 55 additions and 1 deletions
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56
src/main/java/de/extio/game_engine/renderer/g2d/control/components/CustomMultiLineTextArea.java
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@@ -77,6 +77,8 @@ public class CustomMultiLineTextArea extends Component {
private int cachedFontSize = 0;
private int cachedSpaceWidth = 0;
private final ThemeManager themeManager;
private final Consumer<String> onTextChanged;
@@ -296,6 +298,14 @@ public class CustomMultiLineTextArea extends Component {
e.consume();
}
@Override
public void mouseClicked(final MouseEvent e) {
if (e.getClickCount() == 2 && !isInScrollbarArea(e.getX(), e.getY())) {
selectWordAtCaret();
e.consume();
}
}
@Override
public void mouseReleased(final MouseEvent e) {
CustomMultiLineTextArea.this.scrollbarDragging = false;
@@ -524,6 +534,22 @@ public class CustomMultiLineTextArea extends Component {
return height;
}
private int getSpaceWidth() {
if (this.cachedSpaceWidth > 0 && this.cachedFontSize == this.fontSize) {
return this.cachedSpaceWidth;
}
if (this.getGraphics() == null) {
return 10;
}
final int width0 = (int) G2DDrawFont.getTextDimensions("MM", this.getGraphics(), this.fontSize, 1.0).getX();
final int width1 = (int) G2DDrawFont.getTextDimensions("M M", this.getGraphics(), this.fontSize, 1.0).getX();
this.cachedSpaceWidth = width1 - width0;
this.cachedFontSize = this.fontSize;
return this.cachedSpaceWidth;
}
private void updateCaretPosition(final int mouseX, final int mouseY) {
final List<String> wrappedLines = getWrappedLines();
final List<String> rawLines = getLines();
@@ -835,6 +861,33 @@ public class CustomMultiLineTextArea extends Component {
this.dirty = true;
}
private void selectWordAtCaret() {
if (this.text.isEmpty()) {
return;
}
int start = this.caretPosition;
int end = this.caretPosition;
while (start > 0 && isWordCharacter(this.text.charAt(start - 1))) {
start--;
}
while (end < this.text.length() && isWordCharacter(this.text.charAt(end))) {
end++;
}
if (start < end) {
this.selectionAnchor = start;
this.caretPosition = end;
this.dirty = true;
}
}
private boolean isWordCharacter(final char ch) {
return Character.isLetterOrDigit(ch) || ch == '_';
}
@Override
public void update(final Graphics g) {
}
@@ -956,8 +1009,9 @@ public class CustomMultiLineTextArea extends Component {
? caretWrappedLine.substring(0, caretPosInWrappedLine)
: "";
final var textDim = G2DDrawFont.getTextDimensions(beforeCaret, g2d, this.fontSize, this.scaleFactor);
final int spaceWidth = beforeCaret.endsWith(" ") ? getSpaceWidth() : 0;
final int textHeight = textDim.getY();
final int caretX = textDim.getX() + 2;
final int caretX = textDim.getX() + 2 + (int) (spaceWidth * this.scaleFactor);
final int caretY = (int) ((wrappedLineIndex * lineHeight - this.scrollOffsetY) * this.scaleFactor);
if (caretY >= 0 && caretY < this.getHeight()) {