[英]How to make a round Progress Bar in codename one?
I want to create a round progress bar, depicting the current status in percent in its mid. 我想创建一个圆形进度条,以中间的百分比描绘当前状态。 like this:
像这样:
now I already followed the instructions on creating a flat progress bar , but as I am not familiar with swing and I don't have any clue of Javas graphics, I have no clue how to transfer from the 'flat' to the 'round' progress bar. 现在我已经按照创建平面进度条的说明 ,但由于我不熟悉swing并且我没有任何关于Javas图形的线索,我不知道如何从'flat'转换到'round'进度条。
How could a code similiar to the progress bar look like? 与进度条类似的代码怎么样?
ps: I saw Hannahs post on the analog clock and tried it like this - but failed due to my lack in painting (and maybe mathematical) skills. ps:我看到Hannahs在模拟时钟上发帖并试着这样 - 但由于我缺乏绘画(也许是数学)技能而失败了。
pps: I don't use the GUIBuilder at all (bare bones) pps: 我根本不使用GUIBuilder (裸骨)
ppps: I want it to be drawn (if possible), not image-based ppps:我希望它被绘制(如果可能的话),而不是基于图像的
I haven't tested it but something like this should work: 我没有测试它,但这样的东西应该工作:
Container progress = new Container(new LayeredLayout());
Label percent = new Label("0%");
percent.getUnselectedStyle().setAlignment(Component.CENTER);
progress.add(new Label(progressOverlayImage, "Container")).
add(FlowLayout.encloseCenterMiddle(percent));
progress.getUnselectedStyle().setBgPainter((Graphics g, Rectangle rect) -> {
g.setColor(0xff0000);
g.fillArc(progress.getX(), progress.getY(), progressOverlayImage.getWidth(), progressOverlayImage.getHeight(), 0, currentProgress360);
});
You will need the following to get this to work. 您需要以下内容才能使其正常运行。
currentProgress360
that will represent the current state of progress between 0 and 360 currentProgress360
的变量,它将表示0到360之间当前的进度状态
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