java 查找相对于面板的鼠标位置
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Finding Mouse Position relative to a panel
提问by DMCH
I'm trying to get the mouse's position within a panel, as in the top left of the panel = x/y 0,0.
我试图在面板中获取鼠标的位置，如面板左上角 = x/y 0,0。
What I have at the minute gives the position on the entire screen, so depending on where the panel (which is in a frame) is on the screen, the coordinates are different. I guess you could add to the x/y co-ordinates to account for this, but this seems like a messy solution. Can anyone help?
我现在所拥有的给出了整个屏幕上的位置，因此根据面板（在框架中）在屏幕上的位置，坐标是不同的。我想你可以添加 x/y 坐标来解决这个问题，但这似乎是一个混乱的解决方案。任何人都可以帮忙吗？
Here's the mouseListener I'm using, which has been added to the panel.
这是我正在使用的 mouseListener，它已添加到面板中。
private class MouseListener extends MouseAdapter
{
public void mouseClicked(MouseEvent e)
{
// Finds the location of the mouse
PointerInfo a = MouseInfo.getPointerInfo();
Point b = a.getLocation();
// Gets the x -> and y co-ordinates
int x = (int) b.getX();
int y = (int) b.getY();
System.out.println("Mouse x: " + x);
System.out.println("Mouse y: " + y);
// Determines which tile the click occured on
int xTile = x/tileSize;
int yTile = y/tileSize;
System.out.println("X Tile: " + xTile);
System.out.println("Y Tile: " + yTile);
}
}
回答by Andrew Thompson
Returns the x,y position of the event relative to the source component.
返回事件相对于源组件的 x,y 位置。
回答by Reimeus
You can use MouseEvent.getX()and MouseEvent.getY()to get the relative co-ordinates of X & Y respectively.
您可以使用MouseEvent.getX()和MouseEvent.getY()分别获取 X 和 Y 的相对坐标。
int relativeX = e.getX();
int relativeY = e.getY();
...
