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Jason
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"""
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Interactive Region Coordinate Helper
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Opens an image and helps you find pixel coordinates for colorable regions.
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Click on the image to see coordinates.
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Usage:
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python region_helper.py images/cobrai.jpg
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"""
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import sys
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from PIL import Image, ImageDraw, ImageFont
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import tkinter as tk
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from tkinter import Canvas
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from PIL import ImageTk
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class RegionHelper:
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def __init__(self, image_path):
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self.image_path = image_path
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self.image = Image.open(image_path)
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self.width, self.height = self.image.size
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# Setup UI
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self.root = tk.Tk()
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self.root.title(f"Region Helper - {image_path}")
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# Scale image if too large
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self.scale = 1.0
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max_display_width = 1000
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max_display_height = 800
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if self.width > max_display_width or self.height > max_display_height:
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scale_w = max_display_width / self.width
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scale_h = max_display_height / self.height
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self.scale = min(scale_w, scale_h)
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new_width = int(self.width * self.scale)
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new_height = int(self.height * self.scale)
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self.display_image = self.image.resize((new_width, new_height), Image.LANCZOS)
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else:
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self.display_image = self.image.copy()
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# Setup canvas
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self.canvas = Canvas(
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self.root,
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width=self.display_image.width,
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height=self.display_image.height
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)
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self.canvas.pack(side=tk.LEFT)
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# Display image
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self.photo = ImageTk.PhotoImage(self.display_image)
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self.canvas.create_image(0, 0, anchor=tk.NW, image=self.photo)
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# Info panel
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info_frame = tk.Frame(self.root, width=300)
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info_frame.pack(side=tk.RIGHT, fill=tk.BOTH, padx=10, pady=10)
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tk.Label(info_frame, text="Image Dimensions:", font=('Arial', 12, 'bold')).pack(anchor=tk.W, pady=5)
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tk.Label(info_frame, text=f"{self.width} x {self.height} pixels").pack(anchor=tk.W)
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if self.scale != 1.0:
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tk.Label(info_frame, text=f"Scaled: {self.scale:.2%}").pack(anchor=tk.W)
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tk.Label(info_frame, text="\nClick to get coordinates:", font=('Arial', 12, 'bold')).pack(anchor=tk.W, pady=(20, 5))
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self.coord_label = tk.Label(info_frame, text="X: -, Y: -", font=('Arial', 14))
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self.coord_label.pack(anchor=tk.W, pady=5)
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tk.Label(info_frame, text="\nFirst click = Top-Left", fg='blue').pack(anchor=tk.W)
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tk.Label(info_frame, text="Second click = Bottom-Right", fg='blue').pack(anchor=tk.W)
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tk.Label(info_frame, text="\nRegion JSON:", font=('Arial', 12, 'bold')).pack(anchor=tk.W, pady=(20, 5))
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self.json_text = tk.Text(info_frame, height=15, width=35, font=('Courier', 9))
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self.json_text.pack(fill=tk.BOTH, expand=True)
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tk.Button(info_frame, text="Clear Points", command=self.clear_points).pack(pady=10)
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tk.Button(info_frame, text="Copy JSON", command=self.copy_json).pack()
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# Bind events
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self.canvas.bind('<Motion>', self.on_mouse_move)
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self.canvas.bind('<Button-1>', self.on_click)
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# Store points
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self.points = []
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self.point_ids = []
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self.update_json()
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def on_mouse_move(self, event):
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"""Show current mouse coordinates."""
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x = int(event.x / self.scale)
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y = int(event.y / self.scale)
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self.coord_label.config(text=f"X: {x}, Y: {y}")
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def on_click(self, event):
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"""Record clicked point."""
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x = int(event.x / self.scale)
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y = int(event.y / self.scale)
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# Limit to 2 points (top-left, bottom-right)
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if len(self.points) >= 2:
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self.clear_points()
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self.points.append((x, y))
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# Draw point on canvas
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color = 'blue' if len(self.points) == 1 else 'red'
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point_id = self.canvas.create_oval(
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event.x - 5, event.y - 5,
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event.x + 5, event.y + 5,
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fill=color, outline='white', width=2
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)
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self.point_ids.append(point_id)
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# Draw rectangle if we have both points
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if len(self.points) == 2:
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x1, y1 = self.points[0]
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x2, y2 = self.points[1]
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# Draw on canvas (scaled)
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rect_id = self.canvas.create_rectangle(
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x1 * self.scale, y1 * self.scale,
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x2 * self.scale, y2 * self.scale,
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outline='green', width=2, dash=(5, 5)
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)
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self.point_ids.append(rect_id)
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self.update_json()
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def clear_points(self):
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"""Clear all points and rectangles."""
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for point_id in self.point_ids:
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self.canvas.delete(point_id)
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self.points = []
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self.point_ids = []
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self.update_json()
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def update_json(self):
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"""Update the JSON display."""
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self.json_text.delete('1.0', tk.END)
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if len(self.points) == 0:
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self.json_text.insert('1.0', '{\n "name": "region_name",\n "topLeft": [?, ?],\n "bottomRight": [?, ?],\n "description": "..."\n}')
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elif len(self.points) == 1:
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x, y = self.points[0]
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self.json_text.insert('1.0', f'{{\n "name": "region_name",\n "topLeft": [{x}, {y}],\n "bottomRight": [?, ?],\n "description": "..."\n}}')
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else:
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x1, y1 = self.points[0]
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x2, y2 = self.points[1]
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# Calculate dimensions
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width = abs(x2 - x1)
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height = abs(y2 - y1)
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json_str = f'''{{\n "name": "region_name",\n "topLeft": [{x1}, {y1}],\n "bottomRight": [{x2}, {y2}],\n "description": "Width: {width}px, Height: {height}px"\n}}'''
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self.json_text.insert('1.0', json_str)
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def copy_json(self):
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"""Copy JSON to clipboard."""
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json_str = self.json_text.get('1.0', tk.END).strip()
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self.root.clipboard_clear()
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self.root.clipboard_append(json_str)
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self.root.update()
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def run(self):
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"""Start the GUI."""
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self.root.mainloop()
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if __name__ == '__main__':
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if len(sys.argv) < 2:
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print("Usage: python region_helper.py <image_path>")
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print("Example: python region_helper.py images/cobrai.jpg")
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sys.exit(1)
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image_path = sys.argv[1]
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try:
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helper = RegionHelper(image_path)
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helper.run()
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except FileNotFoundError:
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print(f"Error: Image file not found: {image_path}")
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sys.exit(1)
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except Exception as e:
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print(f"Error: {e}")
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sys.exit(1)
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