J2ME GUI实战之三 ----------LWUIT实现切换特效

本文来自：http://blog.csdn.net/hellogv/ ，转载必须注明出处！


以上第一幅图是窗体切换特效之一；第二幅图是控件切换特效之一

以下给出设置特效的代码，这些代码同样来自Sample例子中：

1. /*
2. *Copyright?2008SunMicrosystems,Inc.Allrightsreserved.
3. *Useissubjecttolicenseterms.
4. *
5. */
6. packagecom.sun.lwuit.uidemo;
8. importcom.sun.lwuit.Button;
9. importcom.sun.lwuit.ButtonGroup;
10. importcom.sun.lwuit.CheckBox;
11. importcom.sun.lwuit.Command;
12. importcom.sun.lwuit.Component;
13. importcom.sun.lwuit.Container;
14. importcom.sun.lwuit.Dialog;
15. importcom.sun.lwuit.Display;
16. importcom.sun.lwuit.Form;
17. importcom.sun.lwuit.Label;
18. importcom.sun.lwuit.M3G;
19. importcom.sun.lwuit.RadioButton;
20. importcom.sun.lwuit.TextArea;
21. importcom.sun.lwuit.TextField;
22. importcom.sun.lwuit.animations.CommonTransitions;
23. importcom.sun.lwuit.animations.Transition;
24. importcom.sun.lwuit.animations.Transition3D;
25. importcom.sun.lwuit.events.ActionEvent;
26. importcom.sun.lwuit.events.ActionListener;
27. importcom.sun.lwuit.layouts.BoxLayout;
28. importcom.sun.lwuit.layouts.FlowLayout;
29. importcom.sun.lwuit.plaf.Style;
32. /**
33. *Transitonsbetweenscreens
34. *
35. *@authorShaiAlmog
36. */
37. publicclassTransitionDemoextendsDemo{
38. /**
39. *Theselectedradiobuttonindex
40. */
41. privatestaticintselectedIndex=0;
43. publicStringgetName(){
44. return"Transitions";
45. }
47. protectedStringgetHelp(){
48. return"Transitionsappearwhenswitchingfromoneformtothenext,atransitioncanbebound"+
49. "totheoperationofexitingorenteringthescreen.Therearedefaulttransitionsinthetoolkit"+
50. "andcustomtransitionsareeasytowrite.";
51. }
53. privateRadioButtoncreateRB(Stringlabel,ButtonGroupg,Formf){
54. RadioButtonb=newRadioButton(label);
55. Styles=b.getStyle();
56. s.setMargin(0,0,0,0);
57. s.setBgTransparency(70);
58. g.add(b);
59. f.addComponent(b);
60. returnb;
61. }
63. protectedvoidexecute(finalFormf){
64. f.setLayout(newBoxLayout(BoxLayout.Y_AXIS));
65. Labeltitle=newLabel("Pleaseselectatransitiontype:");
66. title.getStyle().setMargin(0,0,0,0);
67. title.getStyle().setBgTransparency(70);
68. f.addComponent(title);
70. finalButtonGroupradioButtonGroup=newButtonGroup();
71. createRB("SlideHorizontal",radioButtonGroup,f);
72. createRB("SlideVertical",radioButtonGroup,f);
73. createRB("Fade",radioButtonGroup,f);
74. if(M3G.isM3GSupported()){
75. createRB("Rotate",radioButtonGroup,f);
76. createRB("FlyIn",radioButtonGroup,f);
77. createRB("Cube",radioButtonGroup,f);
78. createRB("StaticRotation",radioButtonGroup,f);
79. createRB("SwingTop",radioButtonGroup,f);
80. createRB("SwingBottom",radioButtonGroup,f);
81. }
83. radioButtonGroup.setSelected(selectedIndex);
85. finalTextFieldspeed=newTextField("500");
86. speed.setConstraint(TextArea.NUMERIC);
87. speed.setInputModeOrder(newString[]{"123"});
88. f.addComponent(createPair("Speed",speed));
90. finalFormdestination=newForm("Destination");
91. destination.addComponent(newLabel("Thisisthetransitiondestination..."));
92. destination.addCommand(newCommand("Back"){
93. publicvoidactionPerformed(ActionEventevt){
94. f.show();
95. }
96. });
98. finalCheckBoxhighQuality=newCheckBox("HighQuality");
99. highQuality.setSelected(!Display.getInstance().isLightMode());
100. highQuality.getStyle().setBgTransparency(0);
101. f.addComponent(highQuality);
102. highQuality.addActionListener(newActionListener(){
103. publicvoidactionPerformed(ActionEventevt){
104. if(Display.getInstance().isLightMode()){
105. Dialog.show("Warning","Thedeviceseemsabitweakforhighqualityrendering,"+
106. "usingthismodemightcrashyourdevice.","OK",null);
107. }
108. }
109. });
111. finalButtonupdateButton=newButton("PreviewTransition");
112. finalButtonapplyButton=newButton("ApplyTransition");
113. finalButtonapplyMenu=newButton("ApplyToMenu");
114. finalButtonapplyComponents=newButton("ApplyToComponents");
115. updateButton.setAlignment(Button.CENTER);
116. updateButton.getStyle().setPadding(5,5,7,7);
117. applyButton.setAlignment(Button.CENTER);
118. applyButton.getStyle().setPadding(5,5,7,7);
119. ActionListenerlistener=newActionListener(){
120. publicvoidactionPerformed(ActionEventev){
121. intrunSpeed=Integer.parseInt(speed.getText());
122. Transitionin,out;//in表示窗体切入时使用的特效，out表示窗体切出时使用的特性
123. switch(radioButtonGroup.getSelectedIndex()){
124. case0:{
125. out=CommonTransitions.createSlide(CommonTransitions.SLIDE_HORIZONTAL,false,runSpeed);
126. in=CommonTransitions.createSlide(CommonTransitions.SLIDE_HORIZONTAL,true,runSpeed);
127. break;
128. }
129. case1:{
130. out=CommonTransitions.createSlide(CommonTransitions.SLIDE_VERTICAL,false,runSpeed);
131. in=CommonTransitions.createSlide(CommonTransitions.SLIDE_VERTICAL,true,runSpeed);
132. break;
133. }
134. case2:{
135. out=CommonTransitions.createFade(runSpeed);
136. in=CommonTransitions.createFade(runSpeed);
137. break;
138. }
139. case3:{
140. out=Transition3D.createRotation(runSpeed,true);
141. in=Transition3D.createRotation(runSpeed,false);
142. break;
143. }
144. case4:{
145. out=Transition3D.createFlyIn(runSpeed);
146. in=Transition3D.createFlyIn(runSpeed);
147. break;
148. }
149. case5:{
150. out=Transition3D.createCube(runSpeed,true);
151. in=Transition3D.createCube(runSpeed,false);
152. break;
153. }
154. case6:{
155. out=Transition3D.createStaticRotation(runSpeed,true);
156. in=Transition3D.createStaticRotation(runSpeed,false);
157. break;
158. }
159. case7:{
160. out=Transition3D.createSwingIn(runSpeed);
161. in=out;
162. break;
163. }
164. default:{
165. out=Transition3D.createSwingIn(runSpeed,false);
166. in=out;
167. break;
168. }
169. }
170. selectedIndex=radioButtonGroup.getSelectedIndex();
171. if(outinstanceofTransition3D){//这里需要设置特效效果，仅对部分特效有效
172. ((Transition3D)out).setHighQualityMode(highQuality.isSelected());
173. ((Transition3D)in).setHighQualityMode(highQuality.isSelected());
174. }
175. if(updateButton==ev.getSource()){
176. //演示窗体切换特效
177. f.setTransitionOutAnimator(out);
178. f.setTransitionInAnimator(in);
179. destination.show();
180. }
181. elseif(applyButton==ev.getSource()){
182. //设置全部窗体在切换时都是同一个特效，注意是“窗体切换时”
183. f.setTransitionOutAnimator(null);
184. f.setTransitionInAnimator(null);
185. UIDemoMIDlet.setTransition(in,out);
186. }
187. /*这个函数是UIDemoMIDlet的成员函数
188. *publicstaticvoidsetTransition(Transitionin,Transitionout){
189. form.setTransitionInAnimator(in);
190. form.setTransitionOutAnimator(out);
191. }
192. */
193. elseif(applyMenu==ev.getSource()){
194. //设置全部菜单都是同一个特效，菜单Menu就是一般在右下角弹出的
195. UIDemoMIDlet.setMenuTransition(in,out);
196. }
197. /*这个函数是UIDemoMIDlet的成员函数
198. *publicstaticvoidsetMenuTransition(Transitionin,Transitionout){
199. form.setMenuTransitions(in,out);
200. UIManager.getInstance().getLookAndFeel().setDefaultMenuTransitionIn(in);
201. UIManager.getInstance().getLookAndFeel().setDefaultMenuTransitionOut(out);
202. }
203. */
204. elseif(applyComponents==ev.getSource()){
205. //设置控件都是同一个特效，这里的控件可以是Button
206. //当Button被选中时就会显示特效
207. UIDemoMIDlet.setComponentTransition(in);
208. }
209. /*这个函数是UIDemoMIDlet的成员函数
210. *publicstaticvoidsetComponentTransition(Transitiont){
211. componentTransitions=t;
212. form.setSmoothScrolling(false);
213. }
214. */
215. }
216. };
217. updateButton.addActionListener(listener);
218. applyButton.addActionListener(listener);
219. applyMenu.addActionListener(listener);
220. applyComponents.addActionListener(listener);
222. ContainerbuttonPanel=newContainer(newFlowLayout(Component.CENTER));
223. buttonPanel.addComponent(updateButton);
224. f.addComponent(buttonPanel);
226. buttonPanel=newContainer(newFlowLayout(Component.CENTER));
227. buttonPanel.addComponent(applyButton);
228. f.addComponent(buttonPanel);
230. buttonPanel=newContainer(newFlowLayout(Component.CENTER));
231. buttonPanel.addComponent(applyMenu);
232. f.addComponent(buttonPanel);
234. buttonPanel=newContainer(newFlowLayout(Component.CENTER));
235. buttonPanel.addComponent(applyComponents);
236. f.addComponent(buttonPanel);
237. }
238. }