Step by Step solution about How to resolve the algorithm Mouse position step by step in the Go programming language

This Go program is designed to find the active window using robotgo, a cross-platform library for interacting with the desktop environment. Specifically, it focuses on a window named "gedit" and gathers information about its dimensions, position, and the location of the mouse cursor relative to that window. Here's a detailed explanation of the code:

1. Importing Necessary Libraries:

   • The program imports the following libraries:
     • "fmt" for input and output operations.
     • "github.com/go-vgo/robotgo" for interacting with the desktop environment.

2. Checking if "gedit" is Running:

   • fpid, err := robotgo.FindIds(name) finds all the process IDs (PIDs) associated with a window named "gedit."
   • If there are any PIDs found and no errors occur, the program proceeds to interact with the active window. Otherwise, it prints an error message.

3. Getting the Active Window's Information:

   • pid := fpid[0] assumes that the first PID in the returned array is the PID of the active window.
   • robotgo.ActivePID(pid) makes the window with the specified PID the active window.
   • x, y, w, h := robotgo.GetBounds(pid) gets the top-left corner coordinates (x, y) and the width and height (w, h) of the active window.

4. Printing Window Information:

   • The program prints the coordinates of the window's top-left corner, as well as its width and height.

5. Getting the Mouse Cursor Position:

   • mx, my := robotgo.GetMousePos() gets the current position of the mouse cursor as (mx, my).

6. Checking if the Mouse is Inside the Window:

   • isInside(x, y, w, h, mx, my) checks if the mouse cursor is within the bounds of the window.
   • If the mouse is outside the window, it prints a message.

7. Calculating the Window-Relative Mouse Position:

   • If the mouse is inside the window, it calculates the relative window coordinates (wx, wy) of the mouse cursor.

8. Printing Additional Information:

   • The program prints the window-relative coordinates of the mouse cursor.

In summary, this Go program finds the active window named "gedit," gathers information about its position and size, and determines whether the mouse cursor is inside or outside the window. It also provides the window-relative coordinates of the mouse cursor if it's within the window. This program demonstrates the capabilities of the robotgo library for interacting with desktop environments in Go.

package main

import (
    "fmt"
    "github.com/go-vgo/robotgo"
)

func isInside(x, y, w, h, mx, my int) bool {
    rx := x + w - 1
    ry := y + h - 1
    return mx >= x && mx <= rx && my >= y && my <= ry
}

func main() {
    name := "gedit" // say
    fpid, err := robotgo.FindIds(name)
    if err == nil && len(fpid) > 0 {
        pid := fpid[0]
        robotgo.ActivePID(pid) // make gedit active window
        x, y, w, h := robotgo.GetBounds(pid)
        fmt.Printf("The active window's top left corner is at (%d, %d)\n", x, y)
        fmt.Printf("Its width is %d and its height is %d\n", w, h)
        mx, my := robotgo.GetMousePos()
        fmt.Printf("The screen location of the mouse cursor is (%d, %d)\n", mx, my)
        if !isInside(x, y, w, h, mx, my) {
            fmt.Println("The mouse cursor is outside the active window")
        } else {
            wx := mx - x
            wy := my - y
            fmt.Printf("The window location of the mouse cursor is (%d, %d)\n", wx, wy)
        }
    } else {
        fmt.Println("Problem when finding PID(s) of", name)
    }
}