窗体切换特效之一
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 ?2008 Sun Microsystems, Inc. All rights reserved.
3. * Use is subject to license terms.
4. *
5. */
6. package com.sun.lwuit.uidemo;
7.
8. import com.sun.lwuit.Button;
9. import com.sun.lwuit.ButtonGroup;
10. import com.sun.lwuit.CheckBox;
11. import com.sun.lwuit.Command;
12. import com.sun.lwuit.Component;
13. import com.sun.lwuit.Container;
14. import com.sun.lwuit.Dialog;
15. import com.sun.lwuit.Display;
16. import com.sun.lwuit.Form;
17. import com.sun.lwuit.Label;
18. import com.sun.lwuit.M3G;
19. import com.sun.lwuit.RadioButton;
20. import com.sun.lwuit.TextArea;
21. import com.sun.lwuit.TextField;
22. import com.sun.lwuit.animations.CommonTransitions;
23. import com.sun.lwuit.animations.Transition;
24. import com.sun.lwuit.animations.Transition3D;
25. import com.sun.lwuit.events.ActionEvent;
26. import com.sun.lwuit.events.ActionListener;
27. import com.sun.lwuit.layouts.BoxLayout;
28. import com.sun.lwuit.layouts.FlowLayout;
29. import com.sun.lwuit.plaf.Style;
30.
31.
32. /**
33. * Transitons between screens
34. *
35. * @author Shai Almog
36. */
37. public class TransitionDemo extends Demo {
38. /**
39. * The selected radio button index
40. */
41. private static int selectedIndex = 0;
42.
43. public String getName() {
44. return "Transitions";
45. }
46.
47. protected String getHelp() {
48. return "Transitions appear when switching from one form to the next, a transition can be bound " +
49. "to the operation of exiting or entering the screen. There are default transitions in the toolkit " +
50. "and custom transitions are easy to write.";
51. }
52.
53. private RadioButton createRB(String label, ButtonGroup g, Form f) {
54. RadioButton b = new RadioButton(label);
55. Style s = b.getStyle();
56. s.setMargin(0, 0, 0, 0);
57. s.setBgTransparency(70);
58. g.add(b);
59. f.addComponent(b);
60. return b;
61. }
62.
63. protected void execute(final Form f) {
64. f.setLayout(new BoxLayout(BoxLayout.Y_AXIS));
65. Label title = new Label("Please select a transition type:");
66. title.getStyle().setMargin(0, 0, 0, 0);
67. title.getStyle().setBgTransparency(70);
68. f.addComponent(title);
69.
70. final ButtonGroup radioButtonGroup = new ButtonGroup();
71. createRB("Slide Horizontal", radioButtonGroup, f);
72. createRB("Slide Vertical", radioButtonGroup, f);
73. createRB("Fade", radioButtonGroup, f);
74. if(M3G.isM3GSupported()) {
75. createRB("Rotate", radioButtonGroup, f);
76. createRB("Fly In", radioButtonGroup, f);
77. createRB("Cube", radioButtonGroup, f);
78. createRB("Static Rotation", radioButtonGroup, f);
79. createRB("Swing Top", radioButtonGroup, f);
80. createRB("Swing Bottom", radioButtonGroup, f);
81. }
82.
83. radioButtonGroup.setSelected(selectedIndex);
84.
85. final TextField speed = new TextField("500");
86. speed.setConstraint(TextArea.NUMERIC);
87. speed.setInputModeOrder(new String[] {"123"});
88. f.addComponent(createPair("Speed", speed));
89.
90. final Form destination = new Form("Destination");
91. destination.addComponent(new Label("This is the transition destination..."));
92. destination.addCommand(new Command("Back") {
93. public void actionPerformed(ActionEvent evt) {
94. f.show();
95. }
96. });
97.
98. final CheckBox highQuality = new CheckBox("High Quality");
99. highQuality.setSelected(!Display.getInstance().isLightMode());
100. highQuality.getStyle().setBgTransparency(0);
101. f.addComponent(highQuality);
102. highQuality.addActionListener(new ActionListener() {
103. public void actionPerformed(ActionEvent evt) {
104. if(Display.getInstance().isLightMode()) {
105. Dialog.show("Warning", "The device seems a bit weak for high quality rendering, " +
106. "using this mode might crash your device.", "OK", null);
107. }
108. }
109. });
110.
111. final Button updateButton = new Button("Preview Transition");
112. final Button applyButton = new Button("Apply Transition");
113. final Button applyMenu = new Button("Apply To Menu");
114. final Button applyComponents = new Button("Apply To Components");
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. ActionListener listener = new ActionListener() {
120. public void actionPerformed(ActionEvent ev) {
121. int runSpeed = Integer.parseInt(speed.getText());
122. Transition in, 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. case 0: {
125. out = CommonTransitions.createSlide(CommonTransitions.SLIDE_HORIZONTAL, false, runSpeed);
126. in = CommonTransitions.createSlide(CommonTransitions.SLIDE_HORIZONTAL, true, runSpeed);
127. break;
128. }
129. case 1: {
130. out = CommonTransitions.createSlide(CommonTransitions.SLIDE_VERTICAL, false, runSpeed);
131. in = CommonTransitions.createSlide(CommonTransitions.SLIDE_VERTICAL, true, runSpeed);
132. break;
133. }
134. case 2: {
135. out = CommonTransitions.createFade(runSpeed);
136. in = CommonTransitions.createFade(runSpeed);
137. break;
138. }
139. case 3: {
140. out = Transition3D.createRotation(runSpeed, true);
141. in = Transition3D.createRotation(runSpeed, false);
142. break;
143. }
144. case 4: {
145. out = Transition3D.createFlyIn(runSpeed);
146. in = Transition3D.createFlyIn(runSpeed);
147. break;
148. }
149. case 5: {
150. out = Transition3D.createCube(runSpeed, true);
151. in = Transition3D.createCube(runSpeed, false);
152. break;
153. }
154. case 6: {
155. out = Transition3D.createStaticRotation(runSpeed, true);
156. in = Transition3D.createStaticRotation(runSpeed, false);
157. break;
158. }
159. case 7: {
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(out instanceof Transition3D) {//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. else if(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. * public static void setTransition(Transition in, Transition out) {
189. form.setTransitionInAnimator(in);
190. form.setTransitionOutAnimator(out);
191. }
192. */
193. else if(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. * public static void setMenuTransition(Transition in, Transition out) {
199. form.setMenuTransitions(in, out);
200. UIManager.getInstance().getLookAndFeel().setDefaultMenuTransitionIn(in);
201. UIManager.getInstance().getLookAndFeel().setDefaultMenuTransitionOut(out);
202. }
203. */
204. else if(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. * public static void setComponentTransition(Transition t) {
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);
221.
222. Container buttonPanel = new Container(new FlowLayout(Component.CENTER));
223. buttonPanel.addComponent(updateButton);
224. f.addComponent(buttonPanel);
225.
226. buttonPanel = new Container(new FlowLayout(Component.CENTER));
227. buttonPanel.addComponent(applyButton);
228. f.addComponent(buttonPanel);
229.
230. buttonPanel = new Container(new FlowLayout(Component.CENTER));
231. buttonPanel.addComponent(applyMenu);
232. f.addComponent(buttonPanel);
233.
234. buttonPanel = new Container(new FlowLayout(Component.CENTER));
235. buttonPanel.addComponent(applyComponents);
236. f.addComponent(buttonPanel);
237. }
238. }