初识AS3（十九）——课件首页代码

[知识点]
1、全屏与帧速设置stage.displayState="fullScreen";stage.frameRate=24;
2、右键设置ContextMenu
3、新增画线工具，在指定范围内画线graphics.moveTo()，graphics.lineTo()
4、 按钮文字说明跟踪 鼠标缓冲移动Tween
5、新增倒计时Timer
6、新增背景音乐音量控制soundTransform
[ 效果]
index0.swf
[代码]

1. 
   
2. //舞台设置
   
3. stage.displayState="fullScreen";
   
4. stage.frameRate=24;
   
5. //右键设置
   
6. var myContextMenu:ContextMenu = new ContextMenu();
   
7. removeDefaultItems();
   
8. addCustomMenuItems();
   
9. this.contextMenu = myContextMenu;
   
10. function removeDefaultItems():void {
    
11. myContextMenu.hideBuiltInItems();
    
12. var defaultItems:ContextMenuBuiltInItems = myContextMenu.builtInItems;
    
13. }
    
14. function addCustomMenuItems():void {
    
15. var zuozhe:ContextMenuItem = new ContextMenuItem("制作：刘常");
    
16. myContextMenu.customItems.push(zuozhe);
    
17. var wangzhi:ContextMenuItem = new ContextMenuItem("琴者工作室qzgzs.51.net",true);
    
18. myContextMenu.customItems.push(wangzhi);
    
19. var emaile:ContextMenuItem = new ContextMenuItem("邮箱[email protected]",true);
    
20. myContextMenu.customItems.push(emaile);
    
21. var dizhi:ContextMenuItem = new ContextMenuItem("湖北省荆州市公安县埠河中学",true);
    
22. myContextMenu.customItems.push(dizhi);
    
23. var _close:ContextMenuItem = new ContextMenuItem("关闭",true);
    
24. myContextMenu.customItems.push(_close);
    
25. wangzhi.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, wz);
    
26. _close.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, gb);
    
27. }
    
28. function wz(event:ContextMenuEvent):void {
    
29. var url:URLRequest=new URLRequest("http://qzgzs.51.net");
    
30. navigateToURL(url,"_blank");
    
31. }
    
32. function gb(event:ContextMenuEvent):void {
    
33. fscommand("quit");
    
34. }
    
35. //画线
    
36. var fw:Sprite = new Sprite(  );
    
37. var xian:Sprite = new Sprite( );
    
38. addChild(fw);
    
39. fw.addChild(xian);
    
40. fw.graphics.beginFill(0x000000,0);
    
41. fw.graphics.drawRect(0, 30, 800, 540);
    
42. fw.graphics.endFill();
    
43. fw.addEventListener(MouseEvent.MOUSE_DOWN, ax);
    
44. function ax(event:MouseEvent):void {
    
45. xian.graphics.lineStyle(4,0xFF0000);
    
46. xian.graphics.moveTo(mouseX, mouseY);
    
47. fw.addEventListener(MouseEvent.MOUSE_MOVE, yd);
    
48. }
    
49. stage.addEventListener(MouseEvent.MOUSE_UP, sk);
    
50. function sk(event:MouseEvent):void {
    
51. fw.removeEventListener(MouseEvent.MOUSE_MOVE, yd);
    
52. }
    
53. function yd(event:MouseEvent):void {
    
54. xian.graphics.lineTo(mouseX, mouseY);
    
55. }
    
56. //按钮文字说明
    
57. var btnname:Array=["最前","最后","后退","播放","音乐","音乐","清除","帮助","教案","退出"];
    
58. for (var k:uint=1; k<btnname.length+1; k++) {
    
59. this["_btn" + k].addEventListener(MouseEvent.MOUSE_MOVE,btnjg);
    
60. this["_btn" + k].addEventListener(MouseEvent.MOUSE_OUT,btnyc);
    
61. btn_txt.y=this["_btn" + k].y-18;
    
62. btn_txt.visible=false;
    
63. }
    
64. import fl.transitions.*;
    
65. import fl.transitions.easing.*;
    
66. var myTween:Tween;
    
67. function btnjg(event:MouseEvent):void {
    
68. var btn_xh:uint=event.currentTarget.name.split("_btn").join("");
    
69. btn_txt.visible=true;
    
70. myTween=new Tween(btn_txt,"x", Back.easeOut,btn_txt.x,event.currentTarget.x,0.5,true);
    
71. btn_txt.txt.text=btnname[btn_xh-1];
    
72. }
    
73. function btnyc(event:MouseEvent):void {
    
74. btn_txt.visible=false;
    
75. myTween.stop();
    
76. }
    
77. 
    
78. var js:Timer=new Timer(1000,2700);
    
79. var swf:Array=["1.swf","2.swf","3.swf","4.swf","5.swf"];
    
80. var jishu:uint=0;
    
81. var url:URLRequest=new URLRequest(swf[jishu]);
    
82. var ldr:Loader=new Loader();
    
83. ldr.load(url);
    
84. ldr.mask = zezao;
    
85. addChild(ldr);
    
86. js_mc.js_txt.text="45:00";
    
87. //背景音乐控制
    
88. var _sound:Sound=new Sound();
    
89. var surl:URLRequest=new URLRequest("bjsound.mp3");
    
90. var scz:SoundChannel=new SoundChannel();
    
91. _sound.load(surl);
    
92. scz=_sound.play();
    
93. var yl:Number=0.5;
    
94. var syl:SoundTransform. = scz.soundTransform;
    
95. syl.volume =yl;
    
96. scz.soundTransform. =syl;
    
97. _btn1.enabled=_btn3.enabled=false;
    
98. stage.addEventListener(Event.ENTER_FRAME,gx);
    
99. function gx(event:Event):void {
    
100. if (jishu==0) {
     
101.   _btn5.visible=false;
     
102.   _btn6.visible=true;
     
103.   _btn1.enabled=_btn3.enabled=false;
     
104.   _btn2.enabled=_btn4.enabled=true;
     
105.   _btn2.addEventListener(MouseEvent.CLICK,dj2);
     
106.   _btn4.addEventListener(MouseEvent.CLICK,dj4);
     
107.   _btn1.removeEventListener(MouseEvent.CLICK,dj1);
     
108.   _btn3.removeEventListener(MouseEvent.CLICK,dj3);
     
109. }
     
110. if (jishu==swf.length-1) {
     
111.   _btn5.visible=false;
     
112.   _btn6.visible=true;
     
113.   _btn1.enabled=_btn3.enabled=true;
     
114.   _btn2.enabled=_btn4.enabled=false;
     
115.   _btn1.addEventListener(MouseEvent.CLICK,dj1);
     
116.   _btn3.addEventListener(MouseEvent.CLICK,dj3);
     
117.   _btn2.removeEventListener(MouseEvent.CLICK,dj2);
     
118.   _btn4.removeEventListener(MouseEvent.CLICK,dj4);
     
119. }
     
120. if (jishu<(swf.length-1)&&jishu>0) {
     
121.   _btn5.visible=true;
     
122.   _btn6.visible=false;
     
123.   _btn1.enabled=_btn3.enabled=true;
     
124.   _btn2.enabled=_btn4.enabled=true;
     
125.   _btn1.addEventListener(MouseEvent.CLICK,dj1);
     
126.   _btn3.addEventListener(MouseEvent.CLICK,dj3);
     
127.   _btn2.addEventListener(MouseEvent.CLICK,dj2);
     
128.   _btn4.addEventListener(MouseEvent.CLICK,dj4);
     
129.   scz.stop();
     
130. }
     
131. yl=(ylhk_mc.x-390)/100;
     
132. ylt_mc.scaleX=yl;
     
133. syl.volume =yl;
     
134. scz.soundTransform. =syl;
     
135. }
     
136. //结尾
     
137. function dj2(event:MouseEvent):void {
     
138. xian.graphics.clear();
     
139. jishu=swf.length-1;
     
140. url=new URLRequest(swf[jishu]);
     
141. ldr.load(url);
     
142. scz.stop();
     
143. scz=_sound.play();
     
144. }
     
145. //向前
     
146. function dj4(event:MouseEvent):void {
     
147. xian.graphics.clear();
     
148. jishu++;
     
149. url=new URLRequest(swf[jishu]);
     
150. ldr.load(url);
     
151. scz.stop();
     
152. if (jishu==swf.length-1) {
     
153.   scz=_sound.play();
     
154. }
     
155. }
     
156. //开始
     
157. function dj1(event:MouseEvent):void {
     
158. xian.graphics.clear();
     
159. js_mc.js_txt.text="45:00";
     
160. jishu=0;
     
161. url=new URLRequest(swf[jishu]);
     
162. ldr.load(url);
     
163. scz.stop();
     
164. scz=_sound.play();
     
165. js.stop();
     
166. js=new Timer(1000,2700);
     
167. }
     
168. //后退
     
169. function dj3(event:MouseEvent):void {
     
170. xian.graphics.clear();
     
171. jishu--;
     
172. url=new URLRequest(swf[jishu]);
     
173. ldr.load(url);
     
174. scz.stop();
     
175. if (jishu==0) {
     
176.   scz=_sound.play();
     
177.   js.stop();
     
178.   js=new Timer(1000,2700);
     
179.   js_mc.js_txt.text="45:00";
     
180. }
     
181. }
     
182. //清除线条
     
183. _btn7.addEventListener(MouseEvent.CLICK,dj7);
     
184. function dj7(event:MouseEvent):void {
     
185. xian.graphics.clear();
     
186. }
     
187. //背景音乐控制及倒计时
     
188. var xkls:Sound=new Sound();
     
189. var xklsurl:URLRequest=new URLRequest("xkls.mp3");
     
190. var xklscz:SoundChannel=new SoundChannel();
     
191. xkls.load(xklsurl);
     
192. xklscz.stop();
     
193. _btn6.addEventListener(MouseEvent.CLICK,dj6);
     
194. function dj6(event:MouseEvent):void {
     
195. scz.stop();
     
196. //倒计时
     
197. js.stop();
     
198. js=new Timer(1000,2700);
     
199. js.addEventListener(TimerEvent.TIMER,djs);
     
200. js.addEventListener(TimerEvent.TIMER_COMPLETE,jswc);
     
201. js.start();
     
202. function djs(event:TimerEvent):void {
     
203.   var jss:uint=2700-event.target.currentCount;
     
204.   var fen:String=""+int(jss/60);
     
205.   var miao:String=""+int(jss`);
     
206.   if (fen.length<2) {
     
207.    fen="0"+fen;
     
208.   }
     
209.   if (miao.length<2) {
     
210.    miao="0"+miao;
     
211.   }
     
212.   js_mc.js_txt.text=fen+":"+miao;
     
213. }
     
214. function jswc(event:TimerEvent):void {
     
215.   js.stop();
     
216.   js_mc.js_txt.text="END";
     
217.   xklscz=xkls.play();
     
218. }
     
219. }
     
220. _btn5.addEventListener(MouseEvent.CLICK,dj5);
     
221. function dj5(event:MouseEvent):void {
     
222. js_mc.js_txt.text="45:00";
     
223. scz.stop();
     
224. scz=_sound.play();
     
225. js.stop();
     
226. js=new Timer(1000,2700);
     
227. }
     
228. _btn10.addEventListener(MouseEvent.CLICK,tc);
     
229. function tc(event:MouseEvent):void {
     
230. fscommand("quit");
     
231. }
     
232. //音量滑块拖动控制
     
233. var tdfw:Rectangle=new Rectangle(390,586,100,0);//拖动范围
     
234. ylhk_mc.addEventListener(MouseEvent.MOUSE_DOWN,ylhkax);
     
235. ylhk_mc.addEventListener(MouseEvent.MOUSE_UP,ylhksk);
     
236. ylhk_mc.buttonMode=true;
     
237. stage.addEventListener(MouseEvent.MOUSE_UP,ylhksk);
     
238. function ylhkax(event:MouseEvent):void {
     
239. ylhk_mc.startDrag(false,tdfw);
     
240. }
     
241. function ylhksk(event:MouseEvent):void {
     
242. ylhk_mc.stopDrag();
     
243. }