How to get the RGB value of the image where the mouse is located by java
This article mainly introduces java how to get the RGB value of the image where the mouse is located, the content is detailed and easy to understand, the operation is simple and fast, and it has a certain reference value. I believe you will gain something after reading this java article on how to get the RGB value of the image where the mouse is located. Let's take a look.
Import Java.awt.*
Import java.awt.event.*
Import java.awt.image.*
Import javax.swing.*
Public class GetRectPixel {
Public GetRectPixel () {
ImageHolder holder = new ImageHolder ()
JFrame frame = new JFrame ()
JPanel panel = new JPanel ()
Panel.add (holder)
Frame.getContentPane () add (panel)
Frame.setSize (400400)
Frame.setVisible (true)
}
Public static void main (String [] args) {
GetPixel getpixel = new GetPixel ()
}
}
Class ImageHolder extends Canvas {
BufferedImage bi; / / create a buffer image
Image image
MediaTracker mt; / / create a media tracker
Int imageWidth; / / Image width
Int imageHeight;// image height
Public ImageHolder () {
Mt = new MediaTracker (this)
Try {
Image = Toolkit.getDefaultToolkit () .createImage ("gigi3.jpg")
Mt.addImage (image,0)
Mt.waitForAll (); / / wait until all the images are finished loading
ImageWidth = image.getWidth (this); / / get the width of the single front image
ImageHeight = image.getHeight (this); / / get the length of the current image
}
Catch (Exception e) {}
Bi = new BufferedImage (imageWidth,imageHeight,BufferedImage.TYPE_INT_RGB)
AddMouseListener (new MouseAdapter () {
Public void mouseClicked (MouseEvent me) {
/ / get the horizontal and vertical coordinates of the current position of the mouse
Int mouseX = (int) me.getPoint () .getX ()
Int mouseY = (int) me.getPoint () .getY ()
/ / get the RGB value there
GetPixel (mouseX,mouseY)
}
});
SetSize (imageWidth,imageHeight)
}
Public void paint (Graphics g) {
Int xCenter = (getSize () .width / 2)-(imageWidth / 2)
Int yCenter = (getSize () .height / 2)-(imageHeight / 2)
G.drawImage (image, xCenter, yCenter, imageWidth, imageHeight, this)
}
Public void getPixel (int x pencil int y) {
/ / get the color model of ImageHolder
ColorModel cm = this.getColorModel ()
/ / returns the pixel color component (ImageHolder) in the form of rgb.
Int rgb = cm.getRGB (xroomy)
/ / the values of rmag and b were obtained respectively.
Int red = (rgb > > 16) & 0xff
Int green = (rgb > > 8) & 0xff
Int blue = (rgb) & 0xff
System.out.println ("(" + red+ "," + green+ "," + blue+ "))
}
}
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