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/**
* Copyright (c) 2008-2012 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at .
*/
package com.ardor3d.extension.ui;
import com.ardor3d.extension.ui.text.DefaultLatinTextAreaKeyHandler;
import com.ardor3d.extension.ui.text.TextSelection.SelectionState;
import com.ardor3d.extension.ui.text.UIKeyHandler;
import com.ardor3d.extension.ui.util.Alignment;
import com.ardor3d.input.InputState;
import com.ardor3d.input.Key;
import com.ardor3d.input.MouseButton;
import com.ardor3d.math.Rectangle2;
import com.ardor3d.math.Transform;
import com.ardor3d.math.Vector3;
import com.ardor3d.renderer.Renderer;
public class UITextArea extends AbstractUITextEntryComponent {
/** A store for the clip rectangle. */
private final Rectangle2 _clipRectangleStore = new Rectangle2();
protected UIKeyHandler _keyHandler;
public UITextArea() {
setAlignment(Alignment.TOP_LEFT);
_disabledState = new UIState();
_defaultState = new DefaultTextEntryState();
_writingState = new TextAreaWritingState();
setEditable(true);
applySkin();
switchState(getDefaultState());
}
/**
* Delete any currently selected text.
*/
public void deleteSelectedText() {
if (_selection.getSelectionLength() != 0) {
final String text = getText();
final int sIndex = _selection.getStartIndex();
final int eIndex = _selection.getEndIndex();
if (sIndex >= 0 && sIndex <= text.length() && eIndex >= 0 && eIndex <= text.length()) {
setText(text.substring(0, sIndex) + text.substring(eIndex));
}
}
}
@Override
protected UIKeyHandler getKeyHandler() {
if (_keyHandler == null) {
_keyHandler = new DefaultLatinTextAreaKeyHandler(this);
}
return _keyHandler;
}
public void setKeyHandler(final UIKeyHandler handler) {
_keyHandler = handler;
}
@Override
protected void drawComponent(final Renderer r) {
// figure out our offsets using alignment and edge info
final double x = _alignment.alignX(getContentWidth(), _uiText != null ? _uiText.getWidth() : 1)
+ getTotalLeft();
final double y = _alignment.alignY(getContentHeight(), _uiText != null ? _uiText.getHeight() : 1)
+ getTotalBottom();
// Draw our text, if we have any
if (_uiText != null) {
final String text = getText();
if (text.length() > 0) {
// set our text location
final Vector3 v = Vector3.fetchTempInstance();
// note: we round to get the text pixel aligned... otherwise it can get blurry
v.set(Math.round(x), Math.round(y), 0);
final Transform t = Transform.fetchTempInstance();
t.set(getWorldTransform());
t.applyForwardVector(v);
t.translate(v);
Vector3.releaseTempInstance(v);
_uiText.setWorldTransform(t);
Transform.releaseTempInstance(t);
// draw the selection first
if (getSelection().getSelectionLength() > 0) {
getSelection().draw(r, t);
}
// draw text using current foreground color and alpha.
// TODO: alpha of text...
final boolean needsPop = getWorldRotation().isIdentity();
if (needsPop) {
_clipRectangleStore.set(getHudX() + getTotalLeft(), getHudY() + getTotalBottom(),
getContentWidth(), getContentHeight());
r.pushClip(_clipRectangleStore);
}
_uiText.render(r);
if (needsPop) {
r.popClip();
}
}
}
// Draw our caret, if we have one.
if (isCopyable() && isEditable() && getCurrentState().equals(_writingState) && getCaret().isShowing()) {
getCaret().draw(r, this,
_uiText != null ? _uiText.getLineHeight(getCaretPosition()) : UIComponent.getDefaultFontSize(), x,
y);
}
}
public class TextAreaWritingState extends UIState {
@Override
public boolean keyReleased(final Key key, final InputState state) {
return getKeyHandler().keyReleased(key, state);
}
@Override
public boolean keyPressed(final Key key, final InputState state) {
return getKeyHandler().keyPressed(key, state);
}
@Override
public boolean keyHeld(final Key key, final InputState state) {
return getKeyHandler().keyHeld(key, state);
}
@Override
public void mouseEntered(final int mouseX, final int mouseY, final InputState state) {
// TODO: set cursor to text entry
}
@Override
public void mouseDeparted(final int mouseX, final int mouseY, final InputState state) {
// TODO: set cursor to default
}
@Override
public boolean mousePressed(final MouseButton button, final InputState state) {
final int x = state.getMouseState().getX() - UITextArea.this.getHudX()
- UITextArea.this.getPadding().getLeft();
final int y = state.getMouseState().getY() - UITextArea.this.getHudY()
- UITextArea.this.getPadding().getBottom();
if (_uiText != null) {
final int position = _uiText.findCaretPosition(x, y);
if (isCopyable() && state.getKeyboardState().isAtLeastOneDown(Key.LSHIFT, Key.RSHIFT)) {
_selection.checkStart();
if (_selection.getState() == SelectionState.AT_START_OF_SELECTION) {
if (position <= _selection.getEndIndex()) {
_selection.setStartIndex(position);
} else {
final int oldEnd = _selection.getEndIndex();
_selection.setEndIndex(position);
_selection.setStartIndex(oldEnd);
_selection.setState(SelectionState.AT_END_OF_SELECTION);
}
} else {
if (position >= _selection.getStartIndex()) {
_selection.setEndIndex(position);
} else {
final int oldStart = _selection.getStartIndex();
_selection.setStartIndex(position);
_selection.setEndIndex(oldStart);
_selection.setState(SelectionState.AT_START_OF_SELECTION);
}
}
} else {
// clear any getSelection()
clearSelection();
}
setCaretPosition(position);
} else {
setCaretPosition(0);
}
return true;
}
@Override
public void lostFocus() {
switchState(_defaultState);
getSelection().setStartIndex(-1);
}
}
}
