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#!/usr/bin/python3
import sys, re, os
import sqlite3
import tkinter as tki
from tkinter import ttk
import PIL
from PIL import ImageTk, Image
usageInfo = f"usage: {sys.argv[0]}\n"
usageInfo += "Provides a GUI for reviewing images. Looks in a for-review directory for\n"
usageInfo += "images named 'eolId1 contentId1.ext1', and, for each EOL ID, enables the user to\n"
usageInfo += "choose an image to keep, or reject all. Also provides image rotation.\n"
usageInfo += "Chosen images are placed in another directory, and rejected ones are deleted.\n"
if len(sys.argv) > 1:
print(usageInfo, file=sys.stderr)
sys.exit(1)
imgDir = "imgsForReview/"
outDir = "imgsReviewed/"
dbFile = "data.db"
IMG_DISPLAY_SZ = 400
MAX_IMGS_PER_ID = 3
PLACEHOLDER_IMG = Image.new("RGB", (IMG_DISPLAY_SZ, IMG_DISPLAY_SZ), (88, 28, 135))
# Create output directory if not present
if not os.path.exists(outDir):
os.mkdir(outDir)
# Get images for review
print("Reading input image list")
imgList = os.listdir(imgDir)
imgList.sort(key=lambda s: int(s.split(" ")[0]))
if len(imgList) == 0:
print("No input images found", file=sys.stderr)
sys.exit(1)
# Open db
dbCon = sqlite3.connect(dbFile)
dbCur = dbCon.cursor()
class EolImgReviewer:
""" Provides the GUI for reviewing images """
def __init__(self, root, imgList):
self.root = root
root.title("EOL Image Reviewer")
# Setup main frame
mainFrame = ttk.Frame(root, padding="5 5 5 5")
mainFrame.grid(column=0, row=0, sticky=(tki.N, tki.W, tki.E, tki.S))
root.columnconfigure(0, weight=1)
root.rowconfigure(0, weight=1)
# Set up images-to-be-reviewed frames
self.imgs = [PLACEHOLDER_IMG] * MAX_IMGS_PER_ID # Stored as fields for use in rotation
self.photoImgs = list(map(lambda img: ImageTk.PhotoImage(img), self.imgs)) # Image objects usable by tkinter
# These need a persistent reference for some reason (doesn't display otherwise)
self.labels = []
for i in range(MAX_IMGS_PER_ID):
frame = ttk.Frame(mainFrame, width=IMG_DISPLAY_SZ, height=IMG_DISPLAY_SZ)
frame.grid(column=i, row=0)
label = ttk.Label(frame, image=self.photoImgs[i])
label.grid(column=0, row=0)
self.labels.append(label)
# Add padding
for child in mainFrame.winfo_children():
child.grid_configure(padx=5, pady=5)
# Add bindings
root.bind("<q>", self.quit)
root.bind("<Key-j>", lambda evt: self.accept(0))
root.bind("<Key-k>", lambda evt: self.accept(1))
root.bind("<Key-l>", lambda evt: self.accept(2))
root.bind("<Key-i>", lambda evt: self.reject())
root.bind("<Key-a>", lambda evt: self.rotate(0))
root.bind("<Key-s>", lambda evt: self.rotate(1))
root.bind("<Key-d>", lambda evt: self.rotate(2))
root.bind("<Key-A>", lambda evt: self.rotate(0, True))
root.bind("<Key-S>", lambda evt: self.rotate(1, True))
root.bind("<Key-D>", lambda evt: self.rotate(2, True))
# Initialise images to review
self.imgList = imgList
self.imgListIdx = 0
self.nextEolId = 0
self.nextImgNames = []
self.rotations = []
self.getNextImgs()
def getNextImgs(self):
""" Updates display with new images to review, or ends program """
# Gather names of next images to review
for i in range(MAX_IMGS_PER_ID):
if self.imgListIdx == len(self.imgList):
if i == 0:
self.quit()
return
break
imgName = self.imgList[self.imgListIdx]
eolId = int(re.match(r"(\d+) (\d+)", imgName).group(1))
if i == 0:
self.nextEolId = eolId
self.nextImgNames = [imgName]
self.rotations = [0]
else:
if self.nextEolId != eolId:
break
self.nextImgNames.append(imgName)
self.rotations.append(0)
self.imgListIdx += 1
# Update displayed images
idx = 0
while idx < MAX_IMGS_PER_ID:
if idx < len(self.nextImgNames):
try:
img = Image.open(imgDir + self.nextImgNames[idx])
except PIL.UnidentifiedImageError:
os.remove(imgDir + self.nextImgNames[idx])
del self.nextImgNames[idx]
del self.rotations[idx]
continue
self.imgs[idx] = self.resizeForDisplay(img)
else:
self.imgs[idx] = PLACEHOLDER_IMG
self.photoImgs[idx] = ImageTk.PhotoImage(self.imgs[idx])
self.labels[idx].config(image=self.photoImgs[idx])
idx += 1
# Restart if all image files non-recognisable
if len(self.nextImgNames) == 0:
self.getNextImgs()
return
# Update title
firstImgIdx = self.imgListIdx - len(self.nextImgNames) + 1
lastImgIdx = self.imgListIdx
row = dbCur.execute("SELECT alt_name, eol_id, pref_alt FROM names WHERE eol_id = ? and pref_alt = 1",
(self.nextEolId,)).fetchone()
if row != None:
commonName = row[0]
self.root.title("Reviewing EOL ID {}, aka \"{}\" (imgs {} to {} out of {})".format(
self.nextEolId, commonName, firstImgIdx, lastImgIdx, len(self.imgList)))
else:
self.root.title("Reviewing EOL ID {} (imgs {} to {} out of {})".format(
self.nextEolId, firstImgIdx, lastImgIdx, len(self.imgList)))
def accept(self, imgIdx):
""" React to a user selecting an image """
if imgIdx >= len(self.nextImgNames):
print("Invalid selection")
return
for i in range(len(self.nextImgNames)):
inFile = imgDir + self.nextImgNames[i]
if i == imgIdx: # Move accepted image, rotating if needed
outFile = outDir + self.nextImgNames[i]
if self.rotations[i] == 0:
os.replace(inFile, outFile)
else:
img = Image.open(inFile)
img = img.rotate(self.rotations[i], expand=True)
img.save(outFile)
os.remove(inFile)
else: # Delete non-accepted image
os.remove(inFile)
self.getNextImgs()
def reject(self):
""" React to a user rejecting all images of a set """
for i in range(len(self.nextImgNames)):
os.remove(imgDir + self.nextImgNames[i])
self.getNextImgs()
def rotate(self, imgIdx, anticlockwise = False):
""" Respond to a user rotating an image """
deg = -90 if not anticlockwise else 90
self.imgs[imgIdx] = self.imgs[imgIdx].rotate(deg)
self.photoImgs[imgIdx] = ImageTk.PhotoImage(self.imgs[imgIdx])
self.labels[imgIdx].config(image=self.photoImgs[imgIdx])
self.rotations[imgIdx] = (self.rotations[imgIdx] + deg) % 360
def quit(self, e = None):
dbCon.close()
self.root.destroy()
def resizeForDisplay(self, img):
""" Returns a copy of an image, shrunk to fit the display (keeps aspect ratio), and with a background """
if max(img.width, img.height) > IMG_DISPLAY_SZ:
if (img.width > img.height):
newHeight = int(img.height * IMG_DISPLAY_SZ/img.width)
img = img.resize((IMG_DISPLAY_SZ, newHeight))
else:
newWidth = int(img.width * IMG_DISPLAY_SZ / img.height)
img = img.resize((newWidth, IMG_DISPLAY_SZ))
bgImg = PLACEHOLDER_IMG.copy()
bgImg.paste(img, box=(
int((IMG_DISPLAY_SZ - img.width) / 2),
int((IMG_DISPLAY_SZ - img.height) / 2)))
return bgImg
# Create GUI and defer control
root = tki.Tk()
EolImgReviewer(root, imgList)
root.mainloop()
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