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Ctr + ArrowKeys to navigate between words separated by white spaces #98

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Ctr + ArrowKeys to navigate between words separated by white spaces #98

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b3004a0
Ctrl+ArrowKeys to move around words separated by whitespaces
hnOsmium0001 May 21, 2019
7df2731
Fix selection being kept when text changes from outside
hnOsmium0001 May 22, 2019
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104 changes: 71 additions & 33 deletions src/main/java/mcjty/lib/gui/widgets/TextField.java
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,7 @@ public String getText() {
public TextField setText(String text) {
this.text = text;
cursor = text.length();
selection = -1;
if (startOffset >= cursor) {
startOffset = cursor-1;
if (startOffset < 0) {
Expand Down Expand Up @@ -93,35 +94,36 @@ public boolean keyTyped(char typedChar, int keyCode) {
return true;
}
if (isEnabledAndVisible() && editable) {
if (Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL)) {
if(keyCode == Keyboard.KEY_V) {
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
String data = "";
try {
data = (String) clipboard.getData(DataFlavor.stringFlavor);
} catch (UnsupportedFlavorException | IOException e) {
}
boolean control = Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL);
boolean shift = Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT);
if (keyCode == Keyboard.KEY_V && control) {
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
String data = "";
try {
data = (String) clipboard.getData(DataFlavor.stringFlavor);
} catch (UnsupportedFlavorException | IOException ignored) {
}

if (isRegionSelected()) {
replaceSelectedRegion(data);
} else {
text = text.substring(0, cursor) + data + text.substring(cursor);
}
cursor += data.length();
if (isRegionSelected()) {
replaceSelectedRegion(data);
} else {
text = text.substring(0, cursor) + data + text.substring(cursor);
}
cursor += data.length();
fireTextEvents(text);
} else if (keyCode == Keyboard.KEY_C && control) {
if (isRegionSelected()) {
GuiScreen.setClipboardString(getSelectedText());
}
} else if (keyCode == Keyboard.KEY_X && control) {
if (isRegionSelected()) {
GuiScreen.setClipboardString(getSelectedText());
replaceSelectedRegion("");
fireTextEvents(text);
} else if (keyCode == Keyboard.KEY_C) {
if (isRegionSelected()) {
GuiScreen.setClipboardString(getSelectedText());
}
} else if (keyCode == Keyboard.KEY_X) {
if (isRegionSelected()) {
GuiScreen.setClipboardString(getSelectedText());
replaceSelectedRegion("");
fireTextEvents(text);
}
} else if (keyCode == Keyboard.KEY_A) {
selectAll();
}
} else if (keyCode == Keyboard.KEY_A && control) {
selectAll();

} else if (keyCode == Keyboard.KEY_RETURN) {
fireTextEnterEvents(text);
// window.setTextFocus(null);
Expand Down Expand Up @@ -160,12 +162,20 @@ public boolean keyTyped(char typedChar, int keyCode) {
} else if (keyCode == Keyboard.KEY_LEFT) {
updateSelection();
if (cursor > 0) {
cursor--;
if (control) {
cursor = findNextWord(true);
} else {
cursor--;
}
}
} else if (keyCode == Keyboard.KEY_RIGHT) {
updateSelection();
if (cursor < text.length()) {
cursor++;
if (control) {
cursor = findNextWord(false);
} else {
cursor++;
}
}
} else {
// e.g. F1~12, insert
Expand Down Expand Up @@ -256,6 +266,36 @@ private void updateSelection() {
}


/**
* Try to match a word by that is surrounded by either whitespace or ends of the text.
*
* @param reversed If {@code true}, when it will search towards left, otherwise towards right.
* @return Index, either end or beginning of a word. When {@code reversed}, it will return the beginning and otherwise the end.
*/
private int findNextWord(boolean reversed) {
int change = reversed ? -1 : 1;
int i = cursor;
char last = ' ';
while (true) {
i += change;
if (i < 0 || i >= text.length()) {
break;
}

char c = text.charAt(i);
if (c == ' ' && last != ' ') {
break;
}
last = c;
}

if (reversed) {
return i - change;
}
return i;
}


@Override
public void draw(int x, int y) {
super.draw(x, y);
Expand Down Expand Up @@ -288,17 +328,14 @@ public void draw(int x, int y) {
int selectionStart = getSelectionStart();
int selectionEnd = getSelectionEnd();

// Text: abcdefghijklmn
// Rendered: abcdefg, length=7
// ^6
int renderedStart = MathHelper.clamp(selectionStart - startOffset, 0, renderedText.length());
int renderedEnd = MathHelper.clamp(selectionEnd - startOffset, 0, renderedText.length());

String renderedSelection = renderedText.substring(renderedStart, renderedEnd);
String renderedPreSelection = renderedText.substring(0, renderedStart);
int selectionX = textX + mc.fontRenderer.getStringWidth(renderedPreSelection);
int selectionWidth = mc.fontRenderer.getStringWidth(renderedSelection);
RenderHelper.drawColorLogic(selectionX - 1, textY, selectionWidth + 1, mc.fontRenderer.FONT_HEIGHT, 60, 147, 242, GlStateManager.LogicOp.OR_REVERSE);
RenderHelper.drawColorLogic(selectionX, textY, selectionWidth, mc.fontRenderer.FONT_HEIGHT, 60, 147, 242, GlStateManager.LogicOp.OR_REVERSE);
}
} else {
mc.fontRenderer.drawString(renderedText, textX, textY, 0xffa0a0a0);
Expand Down Expand Up @@ -382,7 +419,8 @@ public TextField addTextEnterEvent(TextEnterEvent event) {
public void removeTextEnterEvent(TextEnterEvent event) {
if (textEnterEvents != null) {
textEnterEvents.remove(event);
};
}

}

private void fireTextEnterEvents(String newText) {
Expand Down