/**
* Copyright (c) Lambda Innovation, 2013-2015
* 本作品版权由Lambda Innovation所有。
* http://www.li-dev.cn/
*
* This project is open-source, and it is distributed under
* the terms of GNU General Public License. You can modify
* and distribute freely as long as you follow the license.
* 本项目是一个开源项目，且遵循GNU通用公共授权协议。
* 在遵照该协议的情况下，您可以自由传播和修改。
* http://www.gnu.org/licenses/gpl.html
*/
package cn.liutils.cgui.gui.component;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.io.IOException;
import javax.vecmath.Vector2d;
import net.minecraft.util.ChatAllowedCharacters;
import net.minecraft.util.StatCollector;
import org.lwjgl.input.Keyboard;
import org.lwjgl.opengl.GL11;
import cn.liutils.cgui.gui.Widget;
import cn.liutils.cgui.gui.annotations.CopyIgnore;
import cn.liutils.cgui.gui.component.Transform.HeightAlign;
import cn.liutils.cgui.gui.component.Transform.WidthAlign;
import cn.liutils.cgui.gui.event.ChangeContentEvent;
import cn.liutils.cgui.gui.event.ConfirmInputEvent;
import cn.liutils.cgui.gui.event.FrameEvent;
import cn.liutils.cgui.gui.event.FrameEvent.FrameEventHandler;
import cn.liutils.cgui.gui.event.KeyEvent;
import cn.liutils.cgui.gui.event.KeyEvent.KeyEventHandler;
import cn.liutils.cgui.gui.event.MouseDownEvent;
import cn.liutils.cgui.gui.event.MouseDownEvent.MouseDownHandler;
import cn.liutils.util.helper.Color;
import cn.liutils.util.helper.Font;
import cn.liutils.util.helper.Font.Align;
import cn.liutils.util.helper.GameTimer;
/**
* 事实证明UI底层是十分蛋疼的……
* @author WeAthFolD
*/
public class TextBox extends Component {
public String content = "";
/**
* Only activated when doesn't allow edit. If activated, The display string will be StatCollector.translateToLocal(content).
*/
public boolean localized = false;
public boolean allowEdit = true;
public boolean doesEcho = false;
public char echoChar = '*';
public Color color = new Color(0xffffffff);
/**
* Whether this textBox doesn't draw chars that are out of bounds.
*/
public boolean emit = false;
public double size = 5;
public double zLevel = 0;
public WidthAlign widthAlign = WidthAlign.LEFT;
public HeightAlign heightAlign = HeightAlign.BOTTOM;
@CopyIgnore
public int caretPos = 0;
public TextBox setSize(double s) {
size = s;
return this;
}
public TextBox disallowEdit() {
allowEdit = false;
return this;
}
public TextBox setContent(String str) {
content = str;
return this;
}
private String getProcessedContent() {
String str = content;
if(!allowEdit && localized) {
str = StatCollector.translateToLocal(str);
}
if(doesEcho) {
StringBuilder sb = new StringBuilder();
for(int i = 0; i < str.length(); ++i) {
sb.append('*');
}
str = sb.toString();
}
return str;
}
private String getClipboardContent() {
Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
if(cb.isDataFlavorAvailable(DataFlavor.stringFlavor)) {
try {
return (String) cb.getData(DataFlavor.stringFlavor);
} catch (UnsupportedFlavorException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return "";
}
private void saveClipboardContent() {
Clipboard cb = Toolkit.getDefaultToolkit().getSystemClipboard();
StringSelection ss = new StringSelection(content);
cb.setContents(ss, ss);
}
private double[] getOffset(Widget w) {
double x = 0, y = 0;
Vector2d v = new Vector2d(Font.font.strLen(getProcessedContent(), size), size);
switch(widthAlign) {
case LEFT:
x = 2;
break;
case CENTER:
x = (w.transform.width - v.x) / 2;
break;
case RIGHT:
x = w.transform.width - v.x;
break;
default:
break;
}
switch(heightAlign) {
case TOP:
y = 0;
break;
case CENTER:
y = (w.transform.height - v.y) / 2;
break;
case BOTTOM:
y = (w.transform.height - v.y);
break;
default:
break;
}
return new double[] { x, y };
}
public TextBox() {
super("TextBox");
addEventHandler(new KeyEventHandler() {
@Override
public void handleEvent(Widget w, KeyEvent event) {
if(!allowEdit)
return;
checkCaret();
int par2 = event.keyCode;
if(par2 == Keyboard.KEY_RIGHT) {
caretPos++;
} else if(par2 == Keyboard.KEY_LEFT) {
caretPos--;
}
if(caretPos < 0) caretPos = 0;
if(caretPos > content.length()) caretPos = content.length();
if(event.keyCode == Keyboard.KEY_V && Keyboard.isKeyDown(Keyboard.KEY_LCONTROL)) {
String str1 = content.substring(0, caretPos), str2 = getClipboardContent(), str3 = content.substring(caretPos);
content = str1 + str2 + str3;
w.postEvent(new ChangeContentEvent());
return;
}
if(event.keyCode == Keyboard.KEY_C && Keyboard.isKeyDown(Keyboard.KEY_LCONTROL)) {
saveClipboardContent();
return;
}
if (par2 == Keyboard.KEY_BACK && content.length() > 0) {
if(caretPos > 0) {
content = content.substring(0, caretPos - 1) +
(caretPos == content.length() ? "" : content.substring(caretPos, content.length()));
--caretPos;
}
w.postEvent(new ChangeContentEvent());
} else if(par2 == Keyboard.KEY_RETURN || par2 == Keyboard.KEY_NUMPADENTER) {
w.postEvent(new ConfirmInputEvent());
} else if(par2 == Keyboard.KEY_DELETE) {
content = "";
w.postEvent(new ChangeContentEvent());
}
if (ChatAllowedCharacters.isAllowedCharacter(event.inputChar)) {
content = content.substring(0, caretPos) + event.inputChar +
(caretPos == content.length() ? "" : content.substring(caretPos, content.length()));
caretPos += 1;
w.postEvent(new ChangeContentEvent());
}
checkCaret();
}
});
addEventHandler(new MouseDownHandler() {
@Override
public void handleEvent(Widget w, MouseDownEvent event) {
double len = 3;
double[] offset = getOffset(w);
double eventX = -offset[0] + event.x;
for(int i = 0; i < content.length(); ++i) {
double cw = Font.font.strLen(String.valueOf(content.charAt(i)), size);
len += cw;
if(len > eventX) {
caretPos = (eventX - len + cw > cw / 2) ? i + 1 : i;
return;
}
}
caretPos = content.length();
}
});
addEventHandler(new FrameEventHandler() {
@Override
public void handleEvent(Widget w, FrameEvent event) {
double[] offset = getOffset(w);
checkCaret();
String str = getProcessedContent();
GL11.glPushMatrix();
GL11.glTranslated(0, 0, zLevel);
if(emit)
Font.font.drawTrimmed(str, offset[0], offset[1], size, color.asHexColor(), Align.LEFT, w.transform.width - 2, "...");
else
Font.font.draw(str, offset[0], offset[1], size, color.asHexColor(), Align.LEFT);
GL11.glPopMatrix();
if(allowEdit && w.isFocused() && GameTimer.getAbsTime() % 1000 < 500) {
double len = Font.font.strLen(str.substring(0, caretPos), size);
Font.font.draw("|", len + offset[0], offset[1], size, color.asHexColor());
}
}
});
}
private void checkCaret() {
if(caretPos > content.length())
caretPos = content.length() - 1;
if(caretPos < 0) caretPos = 0;
}
public static TextBox get(Widget w) {
return w.getComponent("TextBox");
}
}