在搜索并读取Graphics类文档后，我找不到指定行的线型的方法。我的意思是线条是实线还是虚线。有人能帮助我吗？
谢谢！
答案 0 :(得分：3)
你不能，不仅仅是通过使用Flex库类。当然，你可以自己做。这是一个实现它的类（从代码here修改，感谢Ken Fox）：
/*Copyright (c) 2006 Adobe Systems Incorporated
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*/
package com.some.package {
import mx.graphics.IStroke;
import flash.display.Graphics;
public class GraphicsUtils {
public static function _drawDashedLine( target:Graphics, strokes:Array, pattern:Array,
drawingState:DashStruct,
x0:Number, y0:Number, x1:Number, y1:Number):void {
var dX:Number = x1 - x0;
var dY:Number = y1 - y0;
var len:Number = Math.sqrt( dX * dX + dY * dY );
dX /= len;
dY /= len;
var tMax:Number = len;
var t:Number = -drawingState.offset;
var patternIndex:int = drawingState.patternIndex;
var strokeIndex:int = drawingState.strokeIndex;
var styleInited:Boolean = drawingState.styleInited;
while( t < tMax ) {
t += pattern[patternIndex];
if( t < 0 ) {
var x:int = 5;
}
if( t >= tMax ) {
drawingState.offset = pattern[patternIndex] - ( t - tMax );
drawingState.patternIndex = patternIndex;
drawingState.strokeIndex = strokeIndex;
drawingState.styleInited = true;
t = tMax;
}
if( styleInited == false ) {
(strokes[strokeIndex] as IStroke).apply( target );
}
else {
styleInited = false;
}
target.lineTo( x0 + t * dX, y0 + t * dY );
patternIndex = ( patternIndex + 1 ) % pattern.length;
strokeIndex = ( strokeIndex + 1 ) % strokes.length;
}
}
public static function drawDashedLine( target:Graphics, strokes:Array, pattern:Array,
x0:Number, y0:Number, x1:Number, y1:Number ):void {
target.moveTo( x0, y0 );
var struct:DashStruct = new DashStruct();
_drawDashedLine( target, strokes, pattern, struct, x0, y0, x1, y1 );
}
public static function drawDashedPolyLine( target:Graphics, strokes:Array, pattern:Array,
points:Array ):void {
if( points.length == 0 ) { return; }
var prev:Object = points[0];
var struct:DashStruct = new DashStruct();
target.moveTo( prev.x, prev.y );
for( var i:int = 1; i < points.length; i++ ) {
var current:Object = points[i];
_drawDashedLine( target, strokes, pattern, struct,
prev.x, prev.y, current.x, current.y );
prev = current;
}
}
}
}
class DashStruct {
public function init():void {
patternIndex = 0;
strokeIndex = 0;
offset = 0;
}
public var patternIndex:int = 0;
public var strokeIndex:int = 0;
public var offset:Number = 0;
public var styleInited:Boolean = false;
}
您可以像以下一样使用它：
var points:Array = [];
points.push( { x: 0, y: 0 } );
points.push( { x: this.width, y: 0 } );
points.push( { x: this.width, y: this.height } );
points.push( { x: 0, y: this.height } );
points.push( { x: 0, y: 0 } );
var strokes:Array = [];
var transparentStroke:Stroke = new Stroke( 0x0, 0, 0 );
strokes.push( new Stroke( 0x999999, 2, 1, false, 'normal', CapsStyle.NONE ) );
strokes.push( transparentStroke );
strokes.push( new Stroke( 0x222222, 2, 1, false, 'normal', CapsStyle.NONE ) );
strokes.push( transparentStroke );
GraphicsUtils.drawDashedPolyLine( this.graphics, strokes, [ 16, 5, 16, 5 ], points );
答案 1 :(得分：2)
在flex中没有虚线或虚线。
但是，您可以创建自己的线条或边框： http://cookbooks.adobe.com/post_Creating_a_dashed_line_custom_border_with_dash_and-13286.html
尝试并享受！
答案 2 :(得分：1)
今天我遇到了这个，我非常喜欢。提供虚线/虚线和其他一些东西（主要是曲线）。
http://flexdevtips.blogspot.com/2010/01/drawing-dashed-lines-and-cubic-curves.html
答案 3 :(得分：0)
我写了一些简单的DashedLine代码 -
import flash.display.Graphics;
import spark.primitives.Line;
public class DashedLine extends Line
{
public var dashLength:Number = 10;
override protected function draw(g:Graphics):void
{
// Our bounding box is (x1, y1, x2, y2)
var x1:Number = measuredX + drawX;
var y1:Number = measuredY + drawY;
var x2:Number = measuredX + drawX + width;
var y2:Number = measuredY + drawY + height;
var isGap:Boolean;
// Which way should we draw the line?
if ((xFrom <= xTo) == (yFrom <= yTo))
{
// top-left to bottom-right
g.moveTo(x1, y1);
x1 += dashLength;
for(x1; x1 < x2; x1 += dashLength){
if(isGap){
g.moveTo(x1, y1);
} else {
g.lineTo(x1, y1);
}
isGap = !isGap;
}
}
else
{
// bottom-left to top-right
g.moveTo(x1, y2);
x1 += dashLength;
for(x1; x1 < x2; y2 += dashLength){
if(isGap){
g.moveTo(x1, y2);
} else {
g.lineTo(x1, y2);
}
isGap = !isGap;
}
}
}
}
然后像这样使用它 -
<comps:DashedLine top="{}" left="0" width="110%" >
<comps:stroke>
<s:SolidColorStroke color="0xff0000" weight="1"/>
</comps:stroke>
</comps:DashedLine>
答案 4 :(得分：-1)
我这么做很简单：
public static function drawDottedLine(target:Graphics, xFrom:Number, yFrom:Number, xTo:Number, yTo:Number, dotLenth:Number = 10):void{
var isGap:Boolean;
target.moveTo(xFrom, yFrom);
xFrom += dotLenth;
for(xFrom; xFrom < xTo; xFrom += dotLenth){
if(isGap){
target.moveTo(xFrom, yFrom);
} else {
target.lineTo(xFrom, yFrom);
}
isGap = !isGap;
}
}
UPD：:)与Ross提供的链接相同。