我的问题是,我的用户使用 FileReference 导入图像,我需要对其进行屏蔽,然后将其发送到服务器。
我的问题是:我能够保留文件引用事件并将图像数据传输到我的画布中。我能够将屏蔽结果发送到服务器。
但我无法掩盖我的用户在我的画布中加载的图像。
我的问题是,我的用户使用 FileReference 导入图像,我需要对其进行屏蔽,然后将其发送到服务器。
我的问题是:我能够保留文件引用事件并将图像数据传输到我的画布中。我能够将屏蔽结果发送到服务器。
但我无法掩盖我的用户在我的画布中加载的图像。
您只需要将加载的位图添加到可屏蔽容器(例如 Sprite)。例如:Test.as
package {
import flash.display.Graphics;
import flash.display.Loader;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.net.FileFilter;
import flash.net.FileReference;
public class Test extends Sprite {
private var _fileReference:FileReference;
private var _fileFilter:FileFilter;
private var _loader:Loader;
private var _imageContainer:Sprite;
private var _mask:Sprite;
private var _canvas:Sprite;
public function Test() {
addEventListener(Event.ADDED_TO_STAGE, addedToStageListener, false, 0, true);
}
private function addedToStageListener(event:Event):void {
removeEventListener(Event.ADDED_TO_STAGE, addedToStageListener);
_fileReference = new FileReference();
_fileReference.addEventListener(Event.SELECT, fileSelectedListener, false, 0, true);
_fileReference.addEventListener(Event.COMPLETE, fileLoadCompleteListener, false, 0, true);
_fileFilter = new FileFilter("Images", "*.jpg;*.gif;*.png");
_loader = new Loader();
_canvas = new Sprite();
_mask = new Sprite();
var maskGraphics:Graphics = _mask.graphics;
maskGraphics.beginFill(0xFFFFFF);
maskGraphics.drawCircle(50, 50, 50);
maskGraphics.endFill();
_imageContainer = new Sprite();
_imageContainer.mask = _mask;
_canvas.addChild(_imageContainer);
_canvas.addChild(_mask);
addChild(_canvas);
stage.addEventListener(MouseEvent.CLICK, mouseClickListener, false ,0, true);
}
private function mouseClickListener(event:Event):void {
_fileReference.browse([_fileFilter]);
}
private function fileSelectedListener(event:Event):void {
_fileReference.load();
}
private function fileLoadCompleteListener(event:Event):void {
_loader.loadBytes(event.target.data);
while(_imageContainer.numChildren) {
_imageContainer.removeChildAt(0);
}
_imageContainer.addChild(_loader);
}
}}
这改变了情况,但不会显着改变。查看修改后的解决方案:
package {
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Loader;
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
import flash.geom.Point;
import flash.geom.Rectangle;
import flash.net.FileFilter;
import flash.net.FileReference;
public class Test extends Sprite {
private var _fileReference:FileReference;
private var _fileFilter:FileFilter;
private var _imageLoader:Loader;
private var _maskLoader:Loader;
private var _canvas:Sprite;
private var _imageLoaded:Boolean = false;
public function Test() {
addEventListener(Event.ADDED_TO_STAGE, addedToStageListener, false, 0, true);
}
private function addedToStageListener(event:Event):void {
removeEventListener(Event.ADDED_TO_STAGE, addedToStageListener);
_fileReference = new FileReference();
_fileReference.addEventListener(Event.SELECT, fileSelectedListener, false, 0, true);
_fileReference.addEventListener(Event.COMPLETE, fileLoadCompleteListener, false, 0, true);
_fileFilter = new FileFilter("Images", "*.jpg;*.gif;*.png");
_imageLoader = new Loader();
_imageLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, imageLoadCompleteListener, false, 0, true);
_maskLoader = new Loader();
_maskLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, maskLoadCompleteListener, false, 0, true);
_canvas = new Sprite();
addChild(_canvas);
stage.addEventListener(MouseEvent.CLICK, mouseClickListener, false ,0, true);
}
private function mouseClickListener(event:Event):void {
_fileReference.browse([_fileFilter]);
}
private function fileSelectedListener(event:Event):void {
_fileReference.load();
}
private function fileLoadCompleteListener(event:Event):void {
if (!_imageLoaded) {
_imageLoader.loadBytes(event.target.data);
} else {
_maskLoader.loadBytes(event.target.data);
}
}
private function imageLoadCompleteListener(event:Event):void {
_imageLoaded = true;
}
private function maskLoadCompleteListener(event:Event):void {
var imageBitmap:Bitmap = _imageLoader.content as Bitmap;
var maskBitmap:Bitmap = _maskLoader.content as Bitmap;
if (imageBitmap && maskBitmap) {
var imageBitmapData:BitmapData = imageBitmap.bitmapData;
var maskBitmapData:BitmapData = maskBitmap.bitmapData;
var boundRectange:Rectangle = new Rectangle(0, 0, maskBitmap.width, maskBitmap.height);
var destinationPoint:Point = new Point(0, 0);
var finalBitmapData:BitmapData = new BitmapData(maskBitmap.width, maskBitmap.height);
finalBitmapData.copyPixels(imageBitmapData, boundRectange, destinationPoint, maskBitmapData, destinationPoint);
var finalBitmap:Bitmap = new Bitmap(finalBitmapData);
while(_canvas.numChildren) {
_canvas.removeChildAt(0);
}
_canvas.addChild(finalBitmap);
}
}
}}
首先单击舞台允许您选择蒙版图像。第二次单击允许您选择包含遮罩信息的图像(例如具有透明度的 png 文件)。希望这可以帮助。