问题描述
我想在Java中构建一个桌面应用程序 - 一个地图查看器，如下所示： http://sunsite.ubc.ca/UBCMap/ 。每当有人将鼠标悬停在地图上的建筑物上时，应该有一个气球工具提示，说明地图上的建筑物，如办公室电话号码等，并且该建筑物应该在2-d地图中发光。有人可以给我一些指示，我应该在Java中使用什么框架来构建这样的东西（例如JavaFx）？是否有任何类似的示例代码？
I want to build a desktop application - a map viewer , something like this : http://sunsite.ubc.ca/UBCMap/ in Java . Whenever someone hovers the mouse over a building on the map , there should be a balloon tool-tip saying something about that building on the map like its office phone number etc and that building should glow in the 2-d map. Can someone provide me some directions as to what framework should i use in Java to build something like this(e.g JavaFx) ? Is there any sample code which does something similar ?
推荐答案
如果你真的拥有的是一个图像并且你想要工具提示 - 这是一个30秒的描述。
If really all you have is an image and you want tooltips over it - here is a 30 second description.
- 子类JPanel
- 覆盖paint（）方法绘制图像
- 将一些Shape对象（多边形，rects等等）定义为建筑物以及文本工具提示字符串
- 覆盖JPanel子类中的getTooltip。在每次调用时迭代您的Shape对象，测试该点是否在内部形状（形状有一个方法）。返回适合Shape的工具提示，如果你的鼠标没有形状，则返回null
- 如果你想要翻转效果，请注册MouseMotionListener并使用它来查找悬停形状。调用repaint（）并以某种特殊方式渲染你的悬停。
- 热潮！你已经完成了
- Subclass JPanel
- override paint() method to draw image
- Define some number of Shape objects (polygons, rects, etc...) as your "buildings" along with a text tooltip string
- override getTooltip in JPanel subclass. On each call iterate over your Shape objects, testing if the point is inside shape (shape has a method for this). return tooltip appropriate for Shape, or null if your mouse isn't over shape
- if you want rollover effects, register MouseMotionListener and use it to find the "hover" shape. Call repaint() and render your "hover" in some special way.
- boom! you're done
提示：你最需要用TooltipManager注册你的JPanel。
HINT: You will need to register your JPanel with TooltipManager most likely.
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