闪光范围滑块组件 [英] Flash Range Slider Component
本文介绍了闪光范围滑块组件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
有没有类似的东西来这的jQuery的组件闪光灯或是否有任何现成的例子如何做到这一点?
Is there something similar to this jquery component in flash or are there any ready examples on how to do that?
感谢。
推荐答案
我不知道任何内置的(或第三方,对于这个问题)之类的组件。我敢肯定,一些第三方的人但是必须存在,但它们不可能是免费的。
I do not know of any built-in (or third party, for that matter) components of that sort. I'm sure that some third-party ones must exist, however, but they are unlikely to be free.
您可以创建自己没有太多的麻烦。我创建了一个基本的工作版本,如果你想,你可以建立在:
You can create your own without too much trouble. I have created a basic working version that you can build on if you want:
// Main class, shows how to use other classes:
import flash.display.*;
import flash.events.*;
import flash.text.TextField;
public class Main extends Sprite
{
private var output:TextField;
private var range:RangeSlider;
public function Main()
{
output = new TextField();
addChild(output);
// SliderImage and ThumbImage are PNGs exported (inheriting from BitmapData) from the fla
var thumb:SliderThumb = new SliderThumb(new ThumbImage(20, 20), stage);
range = new RangeSlider(new SliderImage(1, 1), thumb, 100);
range.x = 55;
range.y = 55;
range.addEventListener(Event.CHANGE, updateOutput);
addChild(range);
updateOutput();
}
private function updateOutput(e:Event = null):void
{
output.text = range.min + ' to ' + range.max;
}
}
SliderThumb类:
SliderThumb class:
import flash.display.*;
import flash.events.*;
import flash.geom.Point;
public class SliderThumb extends Sprite
{
private var image:Bitmap;
private var mouseIsDown:Boolean;
private var _stage:Stage;
public var min:Number;
public var max:Number;
public function SliderThumb(imageData:BitmapData, _stage:Stage)
{
min = max = 0;
this._stage = _stage;
image = new Bitmap(imageData);
addChild(image);
addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
mouseIsDown = false;
// Center image:
image.x = -Math.round(image.width / 2);
image.y = -Math.round(image.height / 2);
addEventListener(MouseEvent.MOUSE_DOWN, mouseDown);
_stage.addEventListener(MouseEvent.MOUSE_UP, mouseUp);
_stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMove);
}
public function clone():SliderThumb
{
var clone:SliderThumb = new SliderThumb(image.bitmapData, _stage);
clone.min = min;
clone.max = max;
return clone;
}
private function mouseDown(e:MouseEvent):void
{
mouseIsDown = true;
}
private function mouseUp(e:MouseEvent):void
{
mouseIsDown = false;
}
private function mouseMove(e:MouseEvent):void
{
if (mouseIsDown) {
x = parent.globalToLocal(new Point(_stage.mouseX, 0)).x;
if (x < min) {
x = min;
}
else if (x > max) {
x = max;
}
dispatchEvent(new Event(Event.CHANGE));
}
}
}
RangeSlider类:
RangeSlider class:
import flash.display.*;
import flash.events.*;
import flash.geom.Point;
public class RangeSlider extends Sprite
{
private var background:BitmapData;
private var sliders:Array;
// Background is a one-pixel wide image that will be tiled horizonatally to give the slider its look
public function RangeSlider(background:BitmapData, slider:SliderThumb, size:Number)
{
this.background = background;
slider.min = 0;
slider.max = size;
sliders = [slider, slider.clone()];
for each (slider in sliders) {
addChild(slider);
slider.addEventListener(Event.CHANGE, function (e:Event) { dispatchEvent(e); }); // Pass on the CHANGE event
}
sliders[1].x = size;
this.size = size;
}
public function set size(value:Number):void
{
// Update background:
graphics.clear();
graphics.beginBitmapFill(background); // Tiles by default
graphics.drawRect(0, 0, value, background.height);
graphics.endFill();
}
// Returns the position of the first slider (from 0 to size):
public function get min():Number
{
return sliders[0].x;
}
// Returns the position of the second slider (from 0 to size):
public function get max():Number
{
return sliders[1].x;
}
}
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