以下示例演示了如何使用 TLF 设置简单的新闻页面的布局。该页包含大标题、副标题和包含多列的正文部分：
package
{
import flash.display.Sprite;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.events.Event;
import flash.geom.Rectangle;
import flashx.textLayout.compose.StandardFlowComposer;
import flashx.textLayout.container.ContainerController;
import flashx.textLayout.container.ScrollPolicy;
import flashx.textLayout.conversion.TextConverter;
import flashx.textLayout.elements.TextFlow;
import flashx.textLayout.formats.TextLayoutFormat;
public class TLFNewsLayout extends Sprite
{
private var hTextFlow:TextFlow;
private var headContainer:Sprite;
private var headlineController:ContainerController;
private var hContainerFormat:TextLayoutFormat;
private var bTextFlow:TextFlow;
private var bodyTextContainer:Sprite;
private var bodyController:ContainerController;
private var bodyTextContainerFormat:TextLayoutFormat;
private const headlineMarkup:String = "<flow:TextFlow xmlns:flow='http://ns.adobe.com/textLayout/2008'><flow:p textAlign='center'><flow:span fontFamily='Helvetica' fontSize='18'>TLF News Layout Example</flow:span><flow:br/><flow:span fontFamily='Helvetica' fontSize='14'>This example formats text like a newspaper page with a headline, a subtitle, and multiple columns</flow:span></flow:p></flow:TextFlow>";
private const bodyMarkup:String = "<flow:TextFlow xmlns:flow='http://ns.adobe.com/textLayout/2008' fontSize='12' textIndent='10' marginBottom='15' paddingTop='4' paddingLeft='4'><flow:p marginBottom='inherit'><flow:span>There are many </flow:span><flow:span fontStyle='italic'>such</flow:span><flow:span> lime-kilns in that tract of country, for the purpose of burning the white marble which composes a large part of the substance of the hills. Some of them, built years ago, and long deserted, with weeds growing in the vacant round of the interior, which is open to the sky, and grass and wild-flowers rooting themselves into the chinks of the stones, look already like relics of antiquity, and may yet be overspread with the lichens of centuries to come. Others, where the lime-burner still feeds his daily and nightlong fire, afford points of interest to the wanderer among the hills, who seats himself on a log of wood or a fragment of marble, to hold a chat with the solitary man. It is a lonesome, and, when the character is inclined to thought, may be an intensely thoughtful occupation; as it proved in the case of Ethan Brand, who had mused to such strange purpose, in days gone by, while the fire in this very kiln was burning.</flow:span></flow:p><flow:p marginBottom='inherit'><flow:span>The man who now watched the fire was of a different order, and troubled himself with no thoughts save the very few that were requisite to his business. At frequent intervals, he flung back the clashing weight of the iron door, and, turning his face from the insufferable glare, thrust in huge logs of oak, or stirred the immense brands with a long pole. Within the furnace were seen the curling and riotous flames, and the burning marble, almost molten with the intensity of heat; while without, the reflection of the fire quivered on the dark intricacy of the surrounding forest, and showed in the foreground a bright and ruddy little picture of the hut, the spring beside its door, the athletic and coal-begrimed figure of the lime-burner, and the half-frightened child, shrinking into the protection of his father's shadow. And when again the iron door was closed, then reappeared the tender light of the half-full moon, which vainly strove to trace out the indistinct shapes of the neighboring mountains; and, in the upper sky, there was a flitting congregation of clouds, still faintly tinged with the rosy sunset, though thus far down into the valley the sunshine had vanished long and long ago.</flow:span></flow:p></flow:TextFlow>";
public function TLFNewsLayout()
{
//wait for stage to exist
addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
private function onAddedToStage(evtObj:Event):void
{
removeEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;
// Headline text flow and flow composer
hTextFlow = TextConverter.importToFlow(headlineMarkup, TextConverter.TEXT_LAYOUT_FORMAT);
// initialize the headline container and controller objects
headContainer = new Sprite();
headlineController = new ContainerController(headContainer);
headlineController.verticalScrollPolicy = ScrollPolicy.OFF;
hContainerFormat = new TextLayoutFormat();
hContainerFormat.paddingTop = 4;
hContainerFormat.paddingRight = 4;
hContainerFormat.paddingBottom = 4;
hContainerFormat.paddingLeft = 4;
headlineController.format = hContainerFormat;
hTextFlow.flowComposer.addController(headlineController);
addChild(headContainer);
stage.addEventListener(flash.events.Event.RESIZE, resizeHandler);
// Body text TextFlow and flow composer
bTextFlow = TextConverter.importToFlow(bodyMarkup, TextConverter.TEXT_LAYOUT_FORMAT);
// The body text container is below, and has three columns
bodyTextContainer = new Sprite();
bodyController = new ContainerController(bodyTextContainer);
bodyTextContainerFormat = new TextLayoutFormat();
bodyTextContainerFormat.columnCount = 3;
bodyTextContainerFormat.columnGap = 30;
bodyController.format = bodyTextContainerFormat;
bTextFlow.flowComposer.addController(bodyController);
addChild(bodyTextContainer);
resizeHandler(null);
}
private function resizeHandler(event:Event):void
{
const verticalGap:Number = 25;
const stagePadding:Number = 16;
var stageWidth:Number = stage.stageWidth - stagePadding;
var stageHeight:Number = stage.stageHeight - stagePadding;
var headlineWidth:Number = stageWidth;
var headlineContainerHeight:Number = stageHeight;
// Initial compose to get height of headline after resize
headlineController.setCompositionSize(headlineWidth,
headlineContainerHeight);
hTextFlow.flowComposer.compose();
var rect:Rectangle = headlineController.getContentBounds();
headlineContainerHeight = rect.height;
// Resize and place headline text container
// Call setCompositionSize() again with updated headline height
headlineController.setCompositionSize(headlineWidth, headlineContainerHeight );
headlineController.container.x = stagePadding / 2;
headlineController.container.y = stagePadding / 2;
hTextFlow.flowComposer.updateAllControllers();
// Resize and place body text container
var bodyContainerHeight:Number = (stageHeight - verticalGap - headlineContainerHeight);
bodyController.format = bodyTextContainerFormat;
bodyController.setCompositionSize(stageWidth, bodyContainerHeight );
bodyController.container.x = (stagePadding/2);
bodyController.container.y = (stagePadding/2) + headlineContainerHeight + verticalGap;
bTextFlow.flowComposer.updateAllControllers();
}
}
}
TLFNewsLayout 类使用两个文本容器。一个容器显示大标题和副标题，另一个容器显示包含三列的正文文本。为简洁起见，文本作为 TLF 标记文本硬编码到示例中。
headlineMarkup
变量包含标题和副标题，
bodyMarkup
变量包含正文文本。有关 TLF 标记的更多信息，请参阅
使用 TLF 构建文本结构
。
在完成一些初始化操作之后，
onAddedToStage()
函数将大标题文本导入到 TextFlow 对象中，该对象是 TLF 的主要数据结构：
hTextFlow = TextConverter.importToFlow(headlineMarkup, TextConverter.TEXT_LAYOUT_FORMAT);
接下来，为容器创建 Sprite 对象，然后为容器创建控制器并将该控制器与容器相关联：
headContainer = new Sprite();
headlineController = new ContainerController(headContainer);
初始化控制器以设置格式、滚动和其他选项。控制器包含相关的几何尺寸设置，用于定义文本流入的容器的边界。TextLayoutFormat 对象包含格式选项：
hContainerFormat = new TextLayoutFormat();
控制器分配给了流合成器，该函数将容器添加到显示列表。容器的实际构成和显示会延迟到
resizeHandler()
方法。按相同顺序执行相关步骤以初始化正文的 TextFlow 对象。
resizeHandler()
方法测量可供呈现容器用的空间并相应地设置容器大小。首先，调用
compose()
方法，以便计算标题容器的合适高度。随后，
resizeHandler()
方法可以使用
updateAllControllers()
方法添加和显示标题容器。最后，
resizeHandler()
方法使用标题容器的大小确定正文文本容器的位置。
