Unhide forum label menu option

forum_label.py

@@ -16,7 +16,7 @@ def print_forum_label(thread):
     url = 'https://forum.protospace.ca/t/{}/'.format(thread['id'])
 
     qr = qrcode.make(url, version=6, box_size=9)
-    im.paste(qr, (840, 325))
+    im.paste(qr, (840, 150))
 
     item_size = 150
 
@@ -24,14 +24,67 @@ def print_forum_label(thread):
     while w > 1200:
         item_size -= 5
         font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', item_size)
-        w, h = draw.textsize(thread['title'], font=font)
+        w, h = draw.textsize(url, font=font)
 
-    x, y = (width - w) / 2, ((height - h) / 2) - 140
-    draw.text((x, y), thread['title'], font=font, fill='black')
+    x, y = (width - w) / 2, ((height - h) / 2) + 300
+    draw.text((x, y), url, font=font, fill='black')
 
-    font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', 100)
-    draw.text((100, 410), 'Out of stock?', font=font, fill='black')
-    draw.text((150, 560), 'Scan here:', font=font, fill='black')
+    font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf', 80)
+    draw.text((120, 150), 'Forum Thread', font=font, fill='black')
+
+    text = thread['title']
+
+    MARGIN = 50
+    MAX_W, MAX_H, PAD = 900 - (MARGIN*2), 450 - (MARGIN*2), 5
+
+    def fit_text(text, font_size):
+        font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', font_size)
+
+        for cols in range(100, 1, -4):
+            print('trying size', font_size, 'cols', cols)
+
+            paragraph = textwrap.wrap(text, width=cols, break_long_words=False)
+
+            total_h = -PAD
+            total_w = 0
+
+            for line in paragraph:
+                w, h = draw.textsize(line, font=font)
+                if w > total_w:
+                    total_w = w
+                total_h += h + PAD
+
+            if total_w <= MAX_W and total_h < MAX_H:
+                return True, paragraph, total_h
+
+        return False, [], 0
+
+    font_size_range = [1, 500]
+
+    # Thanks to Alex (UDIA) for the binary search algorithm
+    while abs(font_size_range[0] - font_size_range[1]) > 1:
+        font_size = sum(font_size_range) // 2
+        image_fit, check_para, check_h = fit_text(text, font_size)
+        if image_fit:
+            print('Does fit')
+            font_size_range = [font_size, font_size_range[1]]
+            good_size = font_size
+            paragraph = check_para
+            total_h = check_h
+        else:
+            print('Does not fit')
+            font_size_range = [font_size_range[0], font_size]
+
+    font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', good_size)
+    offset = height - MAX_H - MARGIN
+    start_h = -100 + offset
+
+    current_h = start_h
+    for line in paragraph:
+        w, h = draw.textsize(line, font=font)
+        x, y = (MAX_W - w) / 2, current_h
+        draw.text((x+MARGIN, y), line, font=font, fill='black')
+        current_h += h + PAD
 
     im.save('tmp.png')
 

main.py

@@ -470,12 +470,12 @@ def print_forum_label(thread):
     width, height = im.size
     draw = ImageDraw.Draw(im)
 
-    logging.info('Printing forum thread: %s', thread['title'])
+    logging.info('Printing forum thread ID: %s, title: %s', thread['id'], thread['title'])
 
     url = 'https://forum.protospace.ca/t/{}/'.format(thread['id'])
 
     qr = qrcode.make(url, version=6, box_size=9)
-    im.paste(qr, (840, 325))
+    im.paste(qr, (840, 150))
 
     item_size = 150
 
@@ -483,14 +483,63 @@ def print_forum_label(thread):
     while w > 1200:
         item_size -= 5
         font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', item_size)
-        w, h = draw.textsize(item, font=font)
+        w, h = draw.textsize(url, font=font)
 
-    x, y = (width - w) / 2, ((height - h) / 2) - 140
-    draw.text((x, y), item, font=font, fill='black')
+    x, y = (width - w) / 2, ((height - h) / 2) + 300
+    draw.text((x, y), url, font=font, fill='black')
 
-    font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', 100)
-    draw.text((100, 410), 'Out of stock?', font=font, fill='black')
-    draw.text((150, 560), 'Scan here:', font=font, fill='black')
+    font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf', 80)
+    draw.text((120, 150), 'Forum Thread', font=font, fill='black')
+
+    text = thread['title']
+
+    MARGIN = 50
+    MAX_W, MAX_H, PAD = 900 - (MARGIN*2), 450 - (MARGIN*2), 5
+
+    def fit_text(text, font_size):
+        font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', font_size)
+
+        for cols in range(100, 1, -4):
+            paragraph = textwrap.wrap(text, width=cols, break_long_words=False)
+
+            total_h = -PAD
+            total_w = 0
+
+            for line in paragraph:
+                w, h = draw.textsize(line, font=font)
+                if w > total_w:
+                    total_w = w
+                total_h += h + PAD
+
+            if total_w <= MAX_W and total_h < MAX_H:
+                return True, paragraph, total_h
+
+        return False, [], 0
+
+    font_size_range = [1, 500]
+
+    # Thanks to Alex (UDIA) for the binary search algorithm
+    while abs(font_size_range[0] - font_size_range[1]) > 1:
+        font_size = sum(font_size_range) // 2
+        image_fit, check_para, check_h = fit_text(text, font_size)
+        if image_fit:
+            font_size_range = [font_size, font_size_range[1]]
+            good_size = font_size
+            paragraph = check_para
+            total_h = check_h
+        else:
+            font_size_range = [font_size_range[0], font_size]
+
+    font = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf', good_size)
+    offset = height - MAX_H - MARGIN
+    start_h = -100 + offset
+
+    current_h = start_h
+    for line in paragraph:
+        w, h = draw.textsize(line, font=font)
+        x, y = (MAX_W - w) / 2, current_h
+        draw.text((x+MARGIN, y), line, font=font, fill='black')
+        current_h += h + PAD
 
     im.save('tmp.png')
     os.system('lp -d dymo tmp.png > /dev/null 2>&1')