简单的多行文本框插件本来是给编辑器写的……不过看来距离实际使用还有很长时间，于是顺手放出来做个备份。
放在游戏里做多行文本框是够用了……
[code]
// MultiEditLayer.tjs - 简单的多行文本框
//by VariableD 2011/10/7
//改造自EditLayer.tjs
/*
使用样式：new MultiEditLayer(<window>, <parent>)
使用范例：f.test=new MultiEditLayer(kag , kag.fore.base);
则——
f.test.text为当前已经输入的内容
f.test.fontSize为文字大小
*/
/*
已实现的功能：
点中文本框后显示光标
输入&删除文字
文字显示到达文本框边缘后自动换行
回车换行
键盘方向键移动光标
鼠标点击移动光标
选择
复制
剪切
粘贴
*/
class MultiEditLayer extends KAGLayer
{
var Edit_text = ""; // 编辑中的文字
var Edit_selStart = 0; //文字插入点所在位置
var Edit_selAnchor = 0; //选中起始点所在位置
var Edit_mouseDown = false; //鼠标是否在按下状态
var Edit_vertical=false;
//边框宽度和高度
var Edit_width= 620;
var Edit_height=300;
//限制总字数
var Edit_maxChars=450;
//文字颜色
var Edit_textColor=0x000000;
//文字大小
var Edit_fontHeight=20;
//底色
var Edit_bgColor=0x33FFFFFF;
var Edit_bgSelColor=0x330000FF;
var Edit_caretLayer; // キャレット用レイヤ
var Edit_blinkTimer;
//光标坐标
var caret_x=0;
var caret_y=0;
//记录每行行首文字在整个text中的位置
var index_perline=[];
function MultiEditLayer(win, par, vert = false)
{
super.KAGLayer(win, par);
Edit_vertical = vert;
hitType = htMask;
hitThreshold = 0; // 全域でマウスイベントは不透明
focusable = true; // フォーカスは受け取る
useAttention = true; // 注視ポイントを使用する
//文本框位置
left=10;
top=10;
visible=true;
width=Edit_width;
height=Edit_height;
fillRect(0,0,Edit_width,Edit_height,Edit_bgColor);
imeMode = imDontCare; // IME 使用可
font.height=fontSize;
Edit_caretLayer = new global.Layer(win, this);
Edit_caretLayer.hitType = htMask;
Edit_caretLayer.hitThreshold = 256; // 完全にマウスイベントは透明
Edit_caretLayer.left=0;
Edit_caretLayer.top=0;
Edit_blinkTimer = new Timer(onBlink, '');
resizeCaret();
cursor = vert ? crHBeam : crIBeam;
RefreshText();
}
function finalize()
{
invalidate Edit_caretLayer;
invalidate Edit_blinkTimer;
super.finalize(...);
}
function resizeCaret()
{
// 光标描绘初始化
if(Edit_vertical)
{
var h = 2; // 2 固定
var w = font.height;
w = -w if(w<0);
Edit_caretLayer.setImageSize(w, h);
Edit_caretLayer.setSizeToImageSize();
Edit_caretLayer.colorRect(0, 0, w, h, Edit_textColor);
}
else
{
var w = 2; // 2 固定
var h = font.height;
h = -h if(h<0);
Edit_caretLayer.setImageSize(w, h);
Edit_caretLayer.setSizeToImageSize();
Edit_caretLayer.colorRect(0, 0, w, h, Edit_textColor);
}
}
function findline(y) //确认所在行并返回
{
//设定初始值
var line=-1;
if (y < 0) return -2;
//查找符合条件的行
for (var i=0;i<index_perline.count;i++)
{
var y1=i*fontSize;
var y2=(i+1)*fontSize;
//假如在本行内
if ((y>=y1) && (y<y2))
{
line=i;
break;
}
}
return line;
}
function findselStart(x , y) //根据鼠标所在位置寻找文字插入点
{
//确定行数
var line=findline(y);
//假如选中的地方没有文字，返回最后一个字
if (line==-1) return text.length;
//假如鼠标的位置在文本框显示范围以外，返回0
if (line==-2) return 0;
var find=-1;
// 从每行开头的文字开始搜索
var index_start=index_perline[line];
dm(text[(int)index_start]);
for (var i=index_start;i<text.length;i++)
{
var x1=font.getTextWidth(text.substring(index_start,i-index_start));
var x2=font.getTextWidth(text.substring(index_start,i+1-index_start));
//假如到了换行还没找到，那么就返回行末
if (text[i]=="\n")
{
find=i;
break;
}
// 确认了索引位置，则返回索引位置
if ((x>=x1) && (x<x2))
{
find=i;
break;
}
}
//假如找到了文字的位置
if (find!=-1) return find;
//假如没找到（通常应该是最后一行）
else return text.length;
}
function SetCaretPos(x , y) //设定光标坐标
{
Edit_caretLayer.left=x;
Edit_caretLayer.top=y;
}
function showCaret() //显示光标
{
Edit_caretLayer.visible = true;
Edit_blinkTimer.interval = 500;
Edit_blinkTimer.enabled = true;
}
function hideCaret() //隐藏光标
{
Edit_blinkTimer.enabled = false;
Edit_caretLayer.visible = false;
}
function onBlink() //光标闪烁效果
{
Edit_caretLayer.visible = ! Edit_caretLayer.visible;
if (focused==false) hideCaret();
}
//
function onKeyPress(key , shift)
{
// 按下键盘上的某个键
dm("按键"+ key+","+shift);
if(#key >= 32)
{
// 普通の文字
//if(!Edit_maxChars || (Edit_text.length - selectLength) < Edit_maxChars)
if (text.length < Edit_maxChars) insertCharacter(key);
// 暂时隐藏鼠标游标
window.hideMouseCursor();
}
else super.onKeyPress(...);
}
function onKeyDown(key, shift)
{
// 特殊なオペレーション
if(shift & ssCtrl)
{
switch(key)
{
case VK_A: operationAllSelection(); return;
case VK_C: operationCopy(); return;
case VK_X: operationCut(); return;
case VK_V: operationPaste(); return;
}
}
if(key == (Edit_vertical?VK_UP:VK_LEFT)) stepLeft((shift & ssShift) == ssShift);
else if(key == (Edit_vertical?VK_DOWN:VK_RIGHT)) stepRight((shift & ssShift) == ssShift);
else if(key == (Edit_vertical?VK_LEFT:VK_UP)) stepUp((shift & ssShift) == ssShift);
else if(key == (Edit_vertical?VK_RIGHT:VK_DOWN)) stepDown((shift & ssShift) == ssShift);
else if(key == VK_DELETE) deleteAfterCaret();
else if(key == VK_BACK) deleteBeforeCaret();
else if (key == 0x0D) Reline();
else super.onKeyDown(...);
}
function deleteAfterCaret()
{
if(!deleteSelectRange() && Edit_selStart < Edit_text.length)
{
var bcr = Edit_text.substring(0, Edit_selStart);
var acr = Edit_text.substring(Edit_selStart + 1);
Edit_text = bcr + acr;
RefreshText();
}
}
function deleteBeforeCaret()
{
if (!deleteSelectRange() && Edit_selStart>0)
{
var bcr = Edit_text.substring(0, Edit_selStart-1);
var acr = Edit_text.substring(Edit_selStart);
Edit_text = bcr + acr;
Edit_selStart --;
Edit_selAnchor=Edit_selStart;
RefreshText();
}
}
function stepLeft()
{
if (Edit_selStart>0) Edit_selStart--;
Edit_selAnchor=Edit_selStart;
RefreshText();
}
function stepRight()
{
if (Edit_selStart<Edit_text.length) Edit_selStart++;
Edit_selAnchor=Edit_selStart;
RefreshText();
}
function stepUp() //根据光标位置寻找插入点位置
{
var x=Edit_caretLayer.left-fontSize/2;
var y=Edit_caretLayer.top-fontSize;
Edit_selStart=findselStart(x , y);
Edit_selAnchor=Edit_selStart;
RefreshText();
}
function stepDown() //根据光标位置寻找插入点位置
{
var x=Edit_caretLayer.left-fontSize/2;
var y=Edit_caretLayer.top+fontSize;
Edit_selStart=findselStart(x , y);
Edit_selAnchor=Edit_selStart;
RefreshText();
}
function Reline()
{
insertCharacter("\n");
}
function Edit_drawText(x,y,ch,i) //描绘文字（和选中效果）
{
var bgcolor=Edit_bgColor;
if (i<Edit_selStart && i>=Edit_selAnchor) bgcolor=Edit_bgSelColor;
else if (i>=Edit_selStart && i<Edit_selAnchor) bgcolor=Edit_bgSelColor;
fillRect(x,y,font.getTextWidth(ch),fontSize,bgcolor);
drawText(x,y,ch,Edit_textColor);
}
function RefreshText() //刷新所有文字
{
fillRect(0,0,Edit_width,Edit_height,Edit_bgColor);
var x=0;
var y=0;
var line_text="";
var line_num=0;
index_perline=[];
index_perline[0]=0;
// //循环描绘所有文字
for (var i=0;i<text.length;i++)
{
var ch=text[i];
if (ch=="\n") //强制换行
{
x=0;
line_num++;
y=line_num*fontSize;
line_text="";
index_perline[line_num]=i+1;
}
else if (font.getTextWidth(line_text+ch)>Edit_width) //长度超过文本框，换到下一行描绘
{
x=0;
line_num++;
y=line_num*fontSize;
line_text="";
index_perline[line_num]=i+1;
Edit_drawText(x,y,ch,i);
}
else //正常的情况
{
Edit_drawText(x,y,ch,i);
}
line_text+=ch;
x+=font.getTextWidth(ch);
if (Edit_selStart==i+1) //光标所在位置
{
caret_x=x;
caret_y=y;
}
}
if (Edit_selStart==0) //光标在于第一行行头
{
caret_x=0;
caret_y=0;
}
SetCaretPos(caret_x,caret_y);
}
function insertCharacter(ch)
{
// 選択範囲のテキストを削除する
//deleteSelectRange();
// ch をカーソル位置に挿入
var bcr = Edit_text.substring(0, Edit_selStart);
var acr = Edit_text.substring(Edit_selStart);
Edit_text = bcr + ch + acr;
Edit_selStart += ch.length;
//假如文字超过了限制的长度
if (Edit_text.length>Edit_maxChars) Edit_text=Edit_text.substr(0,Edit_maxChars);
if (Edit_selStart>Edit_maxChars) Edit_selStart=Edit_maxChars;
Edit_selAnchor=Edit_selStart;
RefreshText();
}
function onMouseDown(x, y, button, shift)
{
Edit_mouseDown=true;
focus(); //使层接受按键和鼠标信息
showCaret(); //显示光标
Edit_selStart=findselStart(x , y); //根据鼠标位置寻找插入点位置
Edit_selAnchor=Edit_selStart;
RefreshText(); //刷新画面
super.onMouseDown(...);
}
function onMouseUp()
{
Edit_mouseDown = false;
super.onMouseUp(...);
}
function onMouseMove(x, y, button)
{
if(Edit_mouseDown)
{
Edit_selStart=findselStart(x , y);
RefreshText(); //刷新画面
}
}
function deleteSelectRange() //删除选中内容
{
if(Edit_selStart == Edit_selAnchor)
return false;
var sp, ep;
if(Edit_selStart > Edit_selAnchor)
{
sp = Edit_selAnchor;
ep = Edit_selStart;
Edit_selStart = Edit_selAnchor;
}
else
{
sp = Edit_selStart;
ep = Edit_selAnchor;
Edit_selAnchor = Edit_selStart;
}
Edit_text = Edit_text.substring(0, sp) + Edit_text.substring(ep);
RefreshText();
return true;
}
function operationAllSelection() //全选
{
Edit_selAnchor=0;
Edit_selStart=text.length;
RefreshText();
}
function operationCopy() //复制
{
if(Edit_selAnchor == Edit_selStart) return; //假如没有什么可以复制的，返回
var start, len;
if(Edit_selStart > Edit_selAnchor)
{
start = Edit_selAnchor;
len = Edit_selStart - start;
}
else
{
start = Edit_selStart;
len = Edit_selAnchor - start;
}
Clipboard.asText = Edit_text.substring(start, len);
}
function operationCut() //剪切
{
operationCopy();
deleteSelectRange();
}
function operationPaste() //粘贴功能
{
if(Clipboard.hasFormat(cbfText))
{
var tp_text = Clipboard.asText;
insertCharacter(tp_text);
}
}
property text
{
setter(x)
{
x = "" if x === void;
Edit_text = string x;
Edit_selStart = text.length;
RefreshText();
}
getter
{
return Edit_text;
}
}
property fontSize
{
setter(x)
{
Edit_fontHeight = x;
font.height=x;
RefreshText();
resizeCaret();
}
getter
{
return Edit_fontHeight;
}
}
}
[/code]
[[i] 本帖最后由 全局变量D 于 2011-10-7 16:52 编辑 [/i]]