「java给图片加边框」js给图片加边框
本篇文章给大家谈谈java给图片加边框，以及js给图片加边框对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。
本文目录一览：
- 1、java图形用户界面中对话框的背景图片覆盖了文本框和按钮，咋办呢？？？
- 2、java的swing中,我想在JComboBox下拉框中添加带图片的文本内容，该如何去实现？
- 3、JAVA如何设置窗体的形状
- 4、急急急！！！html如何实现在图片上添加文本输入框？？？？
java图形用户界面中对话框的背景图片覆盖了文本框和按钮，咋办呢？？？
对话框上GDI+画的JPG图片作为背景
上面有一个自绘按钮
刚启动的时候还好
有些操作 比如把窗口拖着多晃两下
按钮和图片上面的字就不见了
直到把鼠标放在按钮的那个地方点一个
按钮才出来
这个问题应该怎么解决
总感觉是不是GDI+画图的问题
要是不行还有什么更好的方法实现如下要求
JPG要从文件中读取
设置为对话框的背景
可以通过加载不同的JPG文件更改背景
背景上面有自绘控件和显示文字的静态控件
java的swing中,我想在JComboBox下拉框中添加带图片的文本内容，该如何去实现？
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/*
* CustomComboBoxDemo.java 你要有下列文件
* images/Bird.gif
* images/Cat.gif
* images/Dog.gif
* images/Rabbit.gif
* images/Pig.gif
*/
public class CustomComboBoxDemo extends JPanel {
ImageIcon[] images;
String[] petStrings = {"Bird", "Cat", "Dog", "Rabbit", "Pig"};
/*
* Despite its use of EmptyBorder, this panel makes a fine content
* pane because the empty border just increases the panel's size
* and is "painted" on top of the panel's normal background. In
* other words, the JPanel fills its entire background if it's
* opaque (which it is by default); adding a border doesn't change
* that.
*/
public CustomComboBoxDemo() {
super(new BorderLayout());
//Load the pet images and create an array of indexes.
images = new ImageIcon[petStrings.length];
Integer[] intArray = new Integer[petStrings.length];
for (int i = 0; i petStrings.length; i++) {
intArray[i] = new Integer(i);
images[i] = createImageIcon("images/" + petStrings[i] + ".gif");
if (images[i] != null) {
images[i].setDescription(petStrings[i]);
}
}
//Create the combo box.
JComboBox petList = new JComboBox(intArray);
ComboBoxRenderer renderer= new ComboBoxRenderer();
renderer.setPreferredSize(new Dimension(200, 130));
petList.setRenderer(renderer);
petList.setMaximumRowCount(3);
//Lay out the demo.
add(petList, BorderLayout.PAGE_START);
setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
}
/** Returns an ImageIcon, or null if the path was invalid. */
protected static ImageIcon createImageIcon(String path) {
java.net.URL imgURL = CustomComboBoxDemo.class.getResource(path);
if (imgURL != null) {
return new ImageIcon(imgURL);
} else {
System.err.println("Couldn't find file: " + path);
return null;
}
}
/**
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
*/
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("CustomComboBoxDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
JComponent newContentPane = new CustomComboBoxDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
//Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
class ComboBoxRenderer extends JLabel
implements ListCellRenderer {
private Font uhOhFont;
public ComboBoxRenderer() {
setOpaque(true);
setHorizontalAlignment(CENTER);
setVerticalAlignment(CENTER);
}
/*
* This method finds the image and text corresponding
* to the selected value and returns the label, set up
* to display the text and image.
*/
public Component getListCellRendererComponent(
JList list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus) {
//Get the selected index. (The index param isn't
//always valid, so just use the value.)
int selectedIndex = ((Integer)value).intValue();
if (isSelected) {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
} else {
setBackground(list.getBackground());
setForeground(list.getForeground());
}
//Set the icon and text. If icon was null, say so.
ImageIcon icon = images[selectedIndex];
String pet = petStrings[selectedIndex];
setIcon(icon);
if (icon != null) {
setText(pet);
setFont(list.getFont());
} else {
setUhOhText(pet + " (no image available)",
list.getFont());
}
return this;
}
//Set the font and text when no image was found.
protected void setUhOhText(String uhOhText, Font normalFont) {
if (uhOhFont == null) { //lazily create this font
uhOhFont = normalFont.deriveFont(Font.ITALIC);
}
setFont(uhOhFont);
setText(uhOhText);
}
}
}
JAVA如何设置窗体的形状
设置窗体没有边框(没有最小化，最大化，便闭按钮)，然后设置背景图片，让背景颜色和图片底色一致，这样窗体就和图片一样的形状了
急急急！！！html如何实现在图片上添加文本输入框？？？？
写一个div，css，id样式中写#div {background:url("img.jpg") no-repeat;}可用background-position来控制背景图片的位置，form也用div框起来，用样式控制，如margin和padding（都有上下左右）或是空格nbsp；（html中代表空格）。框框的颜色属性就难了。我以自己知识还解决不了，高手上吧。
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