问题：
分层边界-这可能在Java秋千吗？
鞠征
乡亲们，
我已经读了几个关于stackoverflow的帖子，并在谷歌上搜索了一些(http://docs.oracle.com/javase/tutorial/uiswing/components/border.html)并在决定发布问题之前询问了工作中的所有Swing专家。我对Swing有基本的了解，这让事情变得非常复杂。
我附上了一个按钮的图片。。。这是一个几乎有3个边框的按钮（我的眼睛可以看到）。右边的矩形是Mac上的数字色度计应用程序。鼠标位于按钮图像上显示的黑色边框和灰色边框之间。
根据我们在边框的像素化图像上看到的，边框似乎有一个覆盖许多像素的尾巴或阴影。以Blac为例，它至少有3个像素（内部边框）。外部边框是灰色的——它跨越了近6个像素。
以下是我所做的：我使用了几个版本的Strokes和BasicStroke（3.0F），我可以为内部和外部边框生成2个像素的信息。
我的问题是：1。在Java7中使用Swing是否可以实现这种“高触感”渲染？2.如果是这样，你能给我指一下正确的方向吗？
非常感谢。
共有1个答案
岳鸿畴
您可以随时创建复合边框并堆叠它们
class GUI extends JFrame {
public static void main(String[] args) {
new GUI();
}
GUI() {
Border[] borders = new Border[]{
BorderFactory.createLineBorder(Color.GREEN, 3, true),
BorderFactory.createLineBorder(Color.BLACK, 3, true),
BorderFactory.createLineBorder(Color.GRAY, 6, true)};
Border border = BorderFactory.createCompoundBorder(borders[2],
BorderFactory.createCompoundBorder(borders[1], borders[0]));
JButton button = new JButton("Button");
button.setBorder(border);
add(button);
pack();
setVisible(true);
}
}
Edit1-堆叠LineBorders
这里有许多通过堆叠线条边框来创建渐变的例子。由于示例的数量，代码很长，您可以只复制私有方法。在最终视图中有超过3000个单个边界组件，我没有注意到任何性能问题。
class GUI extends JFrame {
public static void main(String[] args) {
new GUI();
}
public GUI() {
JTabbedPane tabs = new JTabbedPane();
JButton button;
Border b1, b2, b3, b4, b5, b6;
button = new JButton("Button");
button.setBorder(compoundBorder(interpolateColors(Color.BLACK, Color.GREEN, 5)));
tabs.addTab("Black-Green 5", button);
button = new JButton("Button");
button.setBorder(compoundBorder(interpolateColors(Color.BLACK, Color.GREEN, 100)));
tabs.addTab("Black-Green 100", button);
button = new JButton("Button");
button.setBorder(compoundBorder(interpolateColors(Color.BLACK, Color.GREEN, 200)));
tabs.addTab("Black-Green 200", button);
button = new JButton("Button");
button.setBorder(compoundBorder(interpolateColors(Color.GREEN, Color.BLACK, 5)));
tabs.addTab("Green-Black 5", button);
button = new JButton("Button");
button.setBorder(compoundBorder(interpolateColors(Color.GREEN, Color.BLACK, 100)));
tabs.addTab("Green-Black 100", button);
button = new JButton("Button");
button.setBorder(compoundBorder(interpolateColors(Color.GREEN, Color.BLACK, 200)));
tabs.addTab("Green-Black 200", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.GREEN, Color.BLACK, 5));
b2 = compoundBorder(interpolateColors(Color.BLACK, Color.GRAY, 5));
button.setBorder(BorderFactory.createCompoundBorder(b2, b1));
tabs.add("Green-Black-Gray 5", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.GREEN, Color.BLACK, 50));
b2 = compoundBorder(interpolateColors(Color.BLACK, Color.GRAY, 50));
button.setBorder(BorderFactory.createCompoundBorder(b2, b1));
tabs.add("Green-Black-Gray 50", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.GREEN, Color.BLACK, 100));
b2 = compoundBorder(interpolateColors(Color.BLACK, Color.GRAY, 100));
button.setBorder(BorderFactory.createCompoundBorder(b2, b1));
tabs.add("Green-Black-Gray 100", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.GREEN, Color.BLUE, 50));
b2 = compoundBorder(interpolateColors(Color.BLUE, Color.RED, 50));
b3 = compoundBorder(interpolateColors(Color.RED, Color.GREEN, 50));
button.setBorder(compoundBorder(new Border[] {b1, b2, b3}));
tabs.add("Green-Blue-Red-Green 50", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.GREEN, Color.BLUE, 50));
b2 = compoundBorder(interpolateColors(Color.BLUE, Color.RED, 50));
b3 = compoundBorder(interpolateColors(Color.RED, Color.GREEN, 50));
button.setBorder(compoundBorder(new Border[] {b3, b2, b1}));
tabs.add("{Green, Blue, Red} 50", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.MAGENTA, Color.BLUE, 2));
b2 = compoundBorder(interpolateColors(Color.BLUE, Color.CYAN, 2));
b3 = compoundBorder(interpolateColors(Color.CYAN, Color.GREEN, 2));
b4 = compoundBorder(interpolateColors(Color.GREEN, Color.YELLOW, 2));
b5 = compoundBorder(interpolateColors(Color.YELLOW, Color.ORANGE, 2));
b6 = compoundBorder(interpolateColors(Color.ORANGE, Color.RED, 2));
button.setBorder(compoundBorder(new Border[] {b1, b2, b3, b4, b5, b6}));
tabs.add("Rainbow 2", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.MAGENTA, Color.BLUE, 20));
b2 = compoundBorder(interpolateColors(Color.BLUE, Color.CYAN, 20));
b3 = compoundBorder(interpolateColors(Color.CYAN, Color.GREEN, 20));
b4 = compoundBorder(interpolateColors(Color.GREEN, Color.YELLOW, 20));
b5 = compoundBorder(interpolateColors(Color.YELLOW, Color.ORANGE, 20));
b6 = compoundBorder(interpolateColors(Color.ORANGE, Color.RED, 20));
button.setBorder(compoundBorder(new Border[] {b1, b2, b3, b4, b5, b6}));
tabs.add("Rainbow 20", button);
button = new JButton("Button");
b1 = compoundBorder(interpolateColors(Color.MAGENTA, Color.BLUE, 40));
b2 = compoundBorder(interpolateColors(Color.BLUE, Color.CYAN, 30));
b3 = compoundBorder(interpolateColors(Color.CYAN, Color.GREEN, 15));
b4 = compoundBorder(interpolateColors(Color.GREEN, Color.YELLOW, 15));
b5 = compoundBorder(interpolateColors(Color.YELLOW, Color.ORANGE, 30));
b6 = compoundBorder(interpolateColors(Color.ORANGE, Color.RED, 40));
button.setBorder(compoundBorder(new Border[] {b1, b2, b3, b4, b5, b6}));
tabs.add("Rainbow assymetric", button);
add(tabs);
pack();
setSize(new Dimension(1000, 600));
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
}
private static Color[] interpolateColors(Color c1, Color c2, int width) {
Color[] colors = new Color[width];
for (int i = 0; i < width; i++) {
colors[i] = new Color( (c2.getRed() - c1.getRed()) / width * i + c1.getRed(),
(c2.getGreen() - c1.getGreen()) / width * i + c1.getGreen(),
(c2.getBlue() - c1.getBlue()) / width * i + c1.getBlue() );
}
return colors;
}
private static Border compoundBorder(Color[] colors) {
Border b = BorderFactory.createLineBorder(colors[0], 1, true);
for (int i = 1; i < colors.length; i++)
b = BorderFactory.createCompoundBorder(BorderFactory.createLineBorder(colors[i], 1, true), b);
return b;
}
private static Border compoundBorder(Border[] borders) {
Border b = borders[0];
for (int i = 1; i < borders.length; i++)
b = BorderFactory.createCompoundBorder(borders[i], b);
return b;
}
}
Edit2-单个Stroke边界
因为梯度可以是径向的或线性的，所以你不能得到矩形对称的边框，但是你仍然可以得到一些很好的结果。要充分利用这些，你必须阅读RadialGRadientPaint和LinearGRadientPaint。
虽然您只需要一个边框就可以了，但是有很多设置需要事先完成。此外，由于边框是图形对象而不是Swing对象，因此它不会随着组件的包围而调整大小。我能想到的唯一方法是绘制一个矩形（使用Java2D），并将其绑定到组件的边界，以便通过调整大小将其包围。无论如何，这对正确的人来说肯定是有用的，但这里有一些例子。
class GUI extends JFrame {
public static void main(String[] args) {
new GUI();
}
public GUI() {
JTabbedPane mainTabs = new JTabbedPane();
JTabbedPane linTabs = new JTabbedPane();
JTabbedPane radTabs = new JTabbedPane();
JButton button;
Point2D start, end;
float[] dist;
Color[] colors;
BasicStroke stroke;
start = new Point2D.Float(0, 0);
end = new Point2D.Float(500, 500);
dist = new float[] {0.0f, 0.2f, 1.0f};
colors = new Color[] {Color.RED, Color.WHITE, Color.BLUE};
LinearGradientPaint lgp;
stroke = new BasicStroke(5);
/// Linear ///
button = new JButton("Button");
lgp = new LinearGradientPaint(start, end, dist, colors);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Red-White-Blue 5", button);
button = new JButton("Button");
end = new Point2D.Float(200, 200);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REFLECT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Red-White-Blue Reflect 5", button);
button = new JButton("Button");
end = new Point2D.Float(500, 500);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Red-White-Blue Repeat 5", button);
stroke = new BasicStroke(20);
button = new JButton("Button");
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Red-White-Blue 20", button);
button = new JButton("Button");
end = new Point2D.Float(200, 200);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REFLECT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Red-White-Blue Reflect 20", button);
button = new JButton("Button");
end = new Point2D.Float(500, 500);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Red-White-Blue Repeat 20", button);
dist = new float[] {0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1f};
colors = new Color[] {Color.RED, Color.ORANGE, Color.YELLOW, Color.LIGHT_GRAY,
Color.BLACK, Color.RED};
stroke = new BasicStroke(5);
button = new JButton("Button");
lgp = new LinearGradientPaint(start, end, dist, colors);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Dark 5", button);
button = new JButton("Button");
end = new Point2D.Float(200, 200);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REFLECT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Dark Reflect 5", button);
button = new JButton("Button");
end = new Point2D.Float(500, 500);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Dark Repeat 5", button);
stroke = new BasicStroke(20);
button = new JButton("Button");
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Dark 20", button);
button = new JButton("Button");
end = new Point2D.Float(200, 200);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REFLECT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Dark Reflect 20", button);
button = new JButton("Button");
end = new Point2D.Float(500, 500);
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, lgp));
linTabs.addTab("Dark Repeat 20", button);
/// Radial ///
Point2D center = new Point2D.Float(20, 20);
float radius = 1;
dist = new float[] {0.0f, 0.2f, 1.0f};
colors = new Color[] {Color.RED, Color.WHITE, Color.BLUE};
RadialGradientPaint rgp;
stroke = new BasicStroke(40);
button = new JButton("Button");
rgp = new RadialGradientPaint(center, radius, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, rgp));
radTabs.addTab("{Red, Blue White} assymetric 40", button);
button = new JButton("Button");
radius = 300;
stroke = new BasicStroke(10);
center = new Point2D.Float(500, 250);
rgp = new RadialGradientPaint(center, radius, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, rgp));
radTabs.addTab("{Red, Blue White} REPEAT 40", button);
button = new JButton("Button");
radius = 150;
rgp = new RadialGradientPaint(center, radius, dist, colors, CycleMethod.REFLECT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, rgp));
radTabs.addTab("{Red, Blue White} Reflect 40", button);
colors = new Color[] {Color.PINK, Color.MAGENTA, Color.BLUE, Color.CYAN, Color.GREEN, Color.PINK};
dist = new float[] {0.0f, 0.2f, 0.4f, 0.6f, 0.8f, 1f};
button = new JButton("Button");
radius = 70;
Point2D focus = new Point2D.Float(40, 90);
rgp = new RadialGradientPaint(center, radius, focus, dist, colors, CycleMethod.REFLECT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, rgp));
radTabs.addTab("Light Reflect assymetric", button);
button = new JButton("Button");
rgp = new RadialGradientPaint(center, radius, focus, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, rgp));
radTabs.addTab("Light Repeat assymetric", button);
button = new JButton("Button");
radius = 70;
stroke = new BasicStroke(10);
center = new Point2D.Float(500, 250);
rgp = new RadialGradientPaint(center, radius, dist, colors, CycleMethod.REFLECT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, rgp));
radTabs.addTab("Light Reflect 10", button);
button = new JButton("Button");
stroke = new BasicStroke(10);
center = new Point2D.Float(500, 250);
rgp = new RadialGradientPaint(center, radius, dist, colors, CycleMethod.REPEAT);
button.setBorder(BorderFactory.createStrokeBorder(stroke, rgp));
radTabs.addTab("Light Repeat 10", button);
mainTabs.addTab("Linear", linTabs);
mainTabs.addTab("Radial", radTabs);
add(mainTabs);
pack();
setSize(new Dimension(1000, 600));
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
}
}
欢迎提出意见和想法。
类似资料：
-
边界值分析是广泛使用的黑盒测试用例设计技术之一。它用于测试边界值，因为边界附近的输入值具有较高的误差机会。 每当我们通过边界值分析进行测试时，测试人员会在输入边界值时关注软件是否产生正确的输出。 边界值是包含变量上限和下限的值。假设是任何函数的变量，其最小值为，最大值为，和都将被视为边界值。 边界值分析的基本假设是，使用边界值创建的测试用例最有可能导致错误。 和是边界值，所以测试人员更关注这些值，
-
问题内容： 我正在使用JFrame，并且在框架上保留了背景图像。现在的问题是图像的大小小于框架的大小，因此我必须在窗口的空白部分再次保留相同的图像。如果用户单击最大化按钮，则可能需要在运行时将图像放置在框架的空白区域。谁能告诉我如何做到这一点？ 问题答案： 您想要Windows桌面的背景图像之类的东西时，多次使用背景图像而不是调整其大小或仅将其居中显示吗？ 您只需要保留一次图像，然后在paintC
-
在区划图层一级图层内，可设置图层边界，用于明确该图层的业务范围，超出图层边界的区划会自动裁切 操作步骤如下： 1.点击打开区划图层“更多”菜单，选择“设置边界范围” 2.单击选中区域，可以连续选中多个 双击进入下一级区划 3.选中行政区确认后，自动显示行政区边界，对于超过边界的画区行为，会报错显示
-
问题内容： 嗨，我有以下代码是为了找到单词“ is”，但不是在另一个字符串中时才找到它，因此单词“ this”不应返回匹配项，因此我使用\ b。但是以下代码找不到匹配项，我无法弄清楚为什么？ 问题答案： 两次转义： Java中的正则表达式要求您加倍转义某些特殊的正则表达式符号，一个转义为Java，另一个转义为基础正则表达式引擎。
-
我需要你的帮助， 似乎我在尝试在容器div内的textarea周围添加div以及包含容器div底部按钮的div边框时遇到了一些困难。 第一个问题：右侧边框丢失 第二个问题，inner2 div缺少1px纯红。 以下是问题和期望结果的图片： 预期结果是： 这里是超文本标记语言