1 files changed, 202 insertions, 0 deletions
diff --git a/backend/data/reviewEolImgs.py b/backend/data/reviewEolImgs.py
new file mode 100755
index 0000000..08b8478
--- /dev/null
+++ b/backend/data/reviewEolImgs.py
@@ -0,0 +1,202 @@
+#!/usr/bin/python3
+
+import sys, re, os, time
+import sqlite3
+import tkinter as tki
+from tkinter import ttk
+import PIL
+from PIL import ImageTk, Image, ImageOps
+
+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 = "eolImgsForReview/"
+outDir = "eolImgsReviewed/"
+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()
+		# For more info
+		self.numReviewed = 0
+		self.startTime = time.time()
+	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])
+					img = ImageOps.exif_transpose(img)
+				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
+		query = "SELECT eol_ids.id, names.alt_name, names.pref_alt FROM" \
+			" names INNER JOIN eol_ids ON eol_ids.name = names.name" \
+			" WHERE id = ? and pref_alt = 1"
+		row = dbCur.execute(query, (self.nextEolId,)).fetchone()
+		if row != None:
+			commonName = row[1]
+			self.root.title(
+				f"Reviewing EOL ID {self.nextEolId}, aka \"{commonName}\"" \
+				f"(imgs {firstImgIdx} to {lastImgIdx} out of {len(self.imgList)})")
+		else:
+			self.root.title(
+				f"Reviewing EOL ID {self.nextEolId} (imgs {firstImgIdx} to {lastImgIdx} out of {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]
+				img = Image.open(inFile)
+				img = ImageOps.exif_transpose(img)
+				if self.rotations[i] != 0:
+					img = img.rotate(self.rotations[i], expand=True)
+				img.save(outFile)
+				os.remove(inFile)
+			else: # Delete non-accepted image
+				os.remove(inFile)
+		self.numReviewed += 1
+		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.numReviewed += 1
+		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):
+		print(f"Number reviewed: {self.numReviewed}")
+		timeElapsed = time.time() - self.startTime
+		print(f"Time elapsed: {timeElapsed:.2f} seconds")
+		if self.numReviewed > 0:
+			print(f"Avg time per review: {timeElapsed/self.numReviewed:.2f} seconds")
+		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()
+