好的,我使用 Ext.util.TextMetrics 找到了解决方案,首先我在编辑器中获取每个字符的位置,然后将其与鼠标光标位置进行比较,然后根据 charNum 数组中的给定字符更新 midas 选择
htmlEditor.getEl().on('mousemove', function(e)
{
var charNum = {},
text = htmlEditor.getValue(),
fWidth = htmlEditor.getWidth();
var textMetrics = new Ext.util.TextMetrics(htmlEditor.getEl(), htmlEditor.getWidth());
for(var n=0;n<text.length;n++)
{
var dat = text.substring(0, n)
var width = textMetrics.getWidth(dat);
var height = textMetrics.getHeight(dat);
if(width > fWidth)
{
var mult = Math.ceil(width/fWidth)
var width = width % fWidth;
height = height*mult;
}
charNum[n] = [width, height];
}
//console.log("charNum: "+charNum.toSource());
var mX = e.getX();
var mY = e.getY();
var cXY = htmlEditor.getEl().getXY();
var cX = cXY[0];
var cY = cXY[1];
var x = mX-cX-20;
var y = mY-cY;
//console.log("fin xy: "+x+' '+y);
var n = -1;
var z = 0;
for(key in charNum)
{
if(charNum[key][0] > x && charNum[key][1] > y)
{
n = key-1;
break;
}
n++;
z++;
}
if(x < 0 && y < 14) n = -1;
if(n == (z-1) && n != -1)
{
n++;
}
var selection = htmlEditor.win.getSelection();
range = selection.getRangeAt(0);
range.selectNodeContents(htmlEditor.getEditorBody());
range.collapse(true);
for(var x=0;x<n;x++)
{
selection.modify("move", "forward", "character");
}
});