绘制JSlider的滑块图标想要重新标记标记或拇指JSlider而不是标准灰色。我怎样才能做到这一点?
3 回答
茅侃侃
TA贡献1842条经验 获得超21个赞
扩展了TrashGod非常有用的答案,我在几行代码中添加了一些代码,以便将条形图填充到移动它的位置。栏的其余部分将为空白:
执行此操作的代码是:
@Overridepublic void paintTrack(Graphics g) { // ... TrashGod's code ... // calculate how much of the progress bar to fill double percentage = (double)slider.getValue()/(double)slider.getMaximum(); // fill the progress bar with a rectange of that size, (with curved corners of 4px diameter) g2d.fillRoundRect(t.x, t.y, (int)(t.width*percentage), t.height, 4, 4); // ...}
如果你想要一个背景颜色,在绘制第一个颜色之前绘制第二个rectange:
// ... TrashGod's code ... // calculate how much of the progress bar to fill double percentage = (double)slider.getValue()/(double)slider.getMaximum(); // PAINT THE BACKGROUND // create a gradient paint for the background p = new LinearGradientPaint(start, end, new float[] {0.4f,0.8f}, new Color[] {Color.gray.brighter(), Color.gray.brighter().brighter()}); g2d.setPaint(p); g2d.fillRoundRect((int)(t.width*percentage), t.y, t.width - (int)(t.width*percentage), t.height, 4, 4); // PAINT THE FOREGROUND // create the gradient paint p = new LinearGradientPaint(start, end, fracs, colors); g2d.setPaint(p); // fill the progress bar with a rectange of that size, (with curved corners of 4px diameter) g2d.fillRoundRect(t.x, t.y, (int)(t.width*percentage), t.height, 4, 4);
添加回答
举报
0/150
提交
取消