我有一个Spark TextArea:
<s:TextArea id="editor">
<s:textFlow>
<s:TextFlow id="_tf" >
<s:p>Lorem ipsum etc.</s:p>
<s:p>
<s:img source="http://example.com/example.jpg" />
</s:p>
<s:p>Aliquam tincidunt tempor etc.</s:p>
</s:TextFlow>
</s:textFlow>
</s:TextArea>
添加图片的按钮:
<s:Button id="imageBtn"
label="insert image"
width="89"
click="imageBtn_clickHandler(event);" />
以下脚本有效:
import flashx.textLayout.elements.*;
import mx.events.FlexEvent;
protected function imageBtn_clickHandler(evt:MouseEvent):void {
var img:InlineGraphicElement = new InlineGraphicElement();
img.source = "http://example.com/example.jpg";
var p:ParagraphElement = new ParagraphElement();
p.addChild(img);
_tf.addChild(p);
_tf.flowComposer.updateAllControllers();
editor.setFocus();
}
但仅附加到TextFlow的末尾。如何在TextArea中的活动插入符处插入InlineGraphicElement?我的第一个想法是:
import flashx.textLayout.elements.*;
import mx.events.FlexEvent;
protected function imageBtn_clickHandler(evt:MouseEvent):void {
var img:InlineGraphicElement = new InlineGraphicElement();
img.source = "http://example.com/example.jpg";
var p:ParagraphElement;
//pseudocode
p = _tf.getCaret.AncestorThatIsParagraphElement;
// end pseudocode
p.addChild(img);
_tf.flowComposer.updateAllControllers();
editor.setFocus();
}
但是这仍然只会附加在当前段落的末尾,假设我甚至可以找到当前段落作为.addChild()的对象。那么如何在TextFlow对象的子段落中的文本中间插入InlineGraphicElement(甚至替换文本)。
感谢您的见解。
更新:越来越近了。
我可以添加到段落的开头或结尾。
protected function imageBtn_clickHandler(evt:MouseEvent):void {
var img:InlineGraphicElement = new InlineGraphicElement();
img.source = "http://example.com/example.jpg";
var insertInto:ParagraphElement = new ParagraphElement();
insertInto = editor.textFlow.getChildAt(
editor.textFlow.findChildIndexAtPosition(
editor.selectionAnchorPosition
)).getParagraph();
insertInto.addChildAt(0, img); // inserts at beginning of paragraph
insertInto.addChildAt(1, img); // inserts at end of paragraph
_tf.flowComposer.updateAllControllers();
editor.setFocus();
}
但插入中间仍然没有乐趣。此外,上面的代码不会替换突出显示的文本,但这不是真正关注的问题。
基于Eugene的链接,关键是EditManager。
以下代码表示正在运行的更新功能:
protected function imageBtn_clickHandler(evt:MouseEvent):void {
var em:EditManager = editor.textFlow.interactionManager as EditManager;
em.selectRange(editor.selectionAnchorPosition, editor.selectionActivePosition);
em.insertInlineGraphic("http://example.com/example.jpg","auto","auto");
_tf.flowComposer.updateAllControllers();
editor.setFocus();
}
答案 0 :(得分:0)
使用此代码即可获得解决方案。
此处图片来自您的系统文件夹
protected function addImg_clickHandler(event:MouseEvent):void {
_file_ref = new FileReference();
_file_ref.addEventListener( Event.SELECT, handleFileSelect,false,0,true );
var filter:FileFilter = new FileFilter("Images", "*.jpg;*.gif;*.png");
_file_ref.browse([filter]);
}
private function handleFileSelect(e:Event):void {
_file_ref.removeEventListener( Event.SELECT, handleFileSelect );
_file_ref.addEventListener(Event.COMPLETE, handleFileOpen,false,0,true );
_file_ref.load();
}
private function handleFileOpen(e:Event):void {
_file_ref.removeEventListener(Event.COMPLETE, handleFileOpen );
var data:ByteArray = _file_ref.data as ByteArray;
_img_loader= new Loader();
_img_loader.loadBytes(data);
_img_loader.contentLoaderInfo.addEventListener(Event.COMPLETE,imageLoadComplete,false,0,true);
}
protected function imageLoadComplete(e:Event):void{
_img_loader.contentLoaderInfo.removeEventListener(Event.COMPLETE,imageLoadComplete);
var bmd:BitmapData=Bitmap(_img_loader.content).bitmapData;
var bm:Bitmap=new Bitmap(bmd);
var em:EditManager = editorText.textFlow.interactionManager as EditManager;
em.selectRange(editorText.selectionAnchorPosition, editorText.selectionActivePosition);
em.insertInlineGraphic(bm,bm.width,bm.height);
editorText.textFlow.flowComposer.updateAllControllers();
editorText.setFocus();
}
protected function addTable_clickHandler(event:MouseEvent):void
{
var tblement:TableElement = new TableElement();
var em:EditManager = editorText.textFlow.interactionManager as EditManager;
em.selectRange(editorText.selectionAnchorPosition, editorText.selectionActivePosition);
em.insertTableElement(tblement);
editorText.textFlow.flowComposer.updateAllControllers();
editorText.setFocus();
}