text part in meme pipeline

docs/build.py

@@ -42,7 +42,7 @@ img_line = None
 i = None
 for i, meme_id in enumerate(id_list):
     meme = meme_db.get_meme(meme_id)
-    img = img_factory.build_image(meme.template, meme.texts, debug=True)
+    img = img_factory.build_from_template(meme.template, meme.texts, debug=True)
     if img is not None:
         img.save(path.join(templates_dir, meme.template))
         size = (round(img.size[0] * IMG_HEIGHT / img.size[1]), IMG_HEIGHT)

meme_otron/img_factory.py

@@ -3,6 +3,7 @@ from PIL import Image, ImageFont, ImageDraw
 import os
 import os.path as path
 import logging
+import sys
 
 from . import utils
 from .types import Text
@@ -12,6 +13,8 @@ TEMPLATES_DIR = utils.relative_path(__file__, "..", "templates")
 
 FONTS = {}
 
+TEXT_IMAGE_WIDTH = 800
+
 logger = logging.getLogger("img_factory")
 
 
@@ -27,6 +30,8 @@ def load_fonts():
 
 
 def compose_image(images: List[Image.Image]) -> Image.Image:
+    if len(images) == 1:
+        return images[0]
     width = min([img.size[0] for img in images])
     for i, img in enumerate(images):
         if img.size[0] != width:
@@ -40,7 +45,7 @@ def compose_image(images: List[Image.Image]) -> Image.Image:
     return output_image
 
 
-def build_image(template: str, texts: List[Text], debug: bool = False) -> Optional[Image.Image]:
+def build_from_template(template: str, texts: List[Text], debug: bool = False) -> Optional[Image.Image]:
     try:
         img = Image.open(path.join(TEMPLATES_DIR, template)).convert(mode='RGBA')
     except OSError as e:
@@ -50,7 +55,25 @@ def build_image(template: str, texts: List[Text], debug: bool = False) -> Option
     return img
 
 
+def build_text_only(texts: List[Text], debug: bool = False) -> Image.Image:
+    heights = []
+    for text in texts:
+        text.init()
+        text.text, font = fit_text((TEXT_IMAGE_WIDTH, sys.maxsize), text)
+        text_size = font.getsize_multiline(text.text, stroke_width=text.stroke_width * font.size)
+        heights += [round(text_size[1] / (text.y_range[1] - text.y_range[0]))]
+    max_height = sum(heights)
+    for i, text in enumerate(texts):
+        range_factor = heights[i] / max_height
+        start = sum(heights[:i]) / max_height
+        text.y_range = (start + text.y_range[0] * range_factor, start + text.y_range[1] * range_factor)
+        pass
+    txt_img = Image.new('RGBA', (TEXT_IMAGE_WIDTH, max_height), (255, 255, 255))
+    return apply_texts(txt_img, texts, debug=debug)
+
+
 def apply_texts(img: Image.Image, texts: List[Text], debug: bool = False) -> Image.Image:
+    if img.mode != 'RGBA':
         img = img.convert(mode='RGBA')
     draw = ImageDraw.Draw(img)
     for text in texts:
@@ -95,10 +118,10 @@ def fit_text(size: Tuple[int, int], text: Text) -> Tuple[str, ImageFont.FreeType
     max_width = round(size[0] * (text.x_range[1] - text.x_range[0]))
     max_height = round(size[1] * (text.y_range[1] - text.y_range[0]))
     text_size = None
-    font_size = round(text.font_size * min(size)) + 1
+    font_size = round(text.font_size * size[0]) + 1
     font = FONTS[text.font]
     text_content = ""
-    while (text_size is None or text_size[0] >= max_width or text_size[1] >= max_height) and font_size > 1:
+    while (text_size is None or text_size[0] > max_width or text_size[1] > max_height) and font_size > 1:
         font_size -= 1
         font = font.font_variant(size=font_size)
         n_lines = 0

meme_otron/meme_otron.py

@@ -24,29 +24,49 @@ left_wmark.font_size = 0.02
 left_wmark.x_range = [0.005, 0.995]
 left_wmark.y_range = [0.005, 0.995]
 
+simple_text = Text()
+simple_text.align = "left"
+simple_text.position = Pos.W
+simple_text.font_size = 0.04
+simple_text.x_range = [0.01, 0.99]
+simple_text.y_range = [0.2, 0.8]
 
-def compute(*args: str, left_wmark_text: Optional[Text] = None, debug: bool = False) -> Optional[Image.Image]:
+
+def compute(*args: str, left_wmark_text: Optional[str] = None, debug: bool = False) -> Optional[Image.Image]:
     if len(args) < 1:
         return None
 
     parts = utils.split_arguments(args, "-")
     images = []
     for part in parts:
-        images += [compute_part(*part, debug=debug)]
+        img = compute_part(*part, debug=debug)
+        if img is not None:
+            images += [img]
+
+    if len(images) == 0:
+        return None
 
     output_image = img_factory.compose_image(images)
 
     watermarks = [right_wmark]
     if left_wmark_text is not None:
-        left_wmark.text = left_wmark_text
+        watermarks += [left_wmark.variant(left_wmark_text)]
-        watermarks += [left_wmark]
     output_image = img_factory.apply_texts(output_image, watermarks, debug=debug)
 
     return output_image
 
 
 def compute_part(*args: str, debug: bool = False) -> Optional[Image.Image]:
-    meme_id = args[0]
+    meme_id = args[0].lower().strip()
+
+    if meme_id == "text":
+        if len(args) < 2:
+            return None
+        texts = [simple_text.variant(arg) for arg in args[1:]]
+        return img_factory.build_text_only(texts, debug=debug)
+    elif meme_id == "image":
+        return None
+    else:
         meme = meme_db.get_meme(meme_id)
         if meme is None:
             logger.warning(f"Meme template '{meme_id}' not found")
@@ -62,4 +82,4 @@ def compute_part(*args: str, debug: bool = False) -> Optional[Image.Image]:
                     c += 1
                 else:
                     meme.texts[i].text = meme.texts[meme.texts[i].text_ref].text
-    return img_factory.build_image(meme.template, meme.texts, debug=debug)
+        return img_factory.build_from_template(meme.template, meme.texts, debug=debug)

meme_otron/types.py

@@ -57,6 +57,11 @@ class Text:
         self.align = None
         self.position = None
 
+    def variant(self, text: str) -> 'Text':
+        new_text = copy.deepcopy(self)
+        new_text.text = text
+        return new_text
+
     def update(self, base: 'Text'):
         for prop in Text.base_properties:
             if getattr(self, prop) is None:

tests/unit/meme_otron/test_types.py

@@ -20,13 +20,22 @@ class TestText(TestCase):
         txt2.fill = [0, 1, 0]
         txt2.stroke_width = 5
         txt1.update(txt2)
-        self.assertEqual("txt1", txt1.text, "text keeped")
+        self.assertEqual("txt1", txt1.text, "text kept")
-        self.assertIsNone(txt1.angle, "angle keeped")
+        self.assertIsNone(txt1.angle, "angle kept")
-        self.assertEqual((0, 1), txt1.x_range, "position keeped")
+        self.assertEqual((0, 1), txt1.x_range, "position kept")
         self.assertEqual(txt2.fill, txt1.fill, "fill changed")
-        self.assertNotEqual(txt2.stroke_width, txt1.stroke_width, "stroke_width keeped")
+        self.assertNotEqual(txt2.stroke_width, txt1.stroke_width, "stroke_width kept")
         self.assertEqual(6, txt1.stroke_width)
 
+    def test_variant(self):
+        txt1 = types.Text("txt1")
+        txt1.stroke_width = 6
+        txt1.x_range = (0.5, 0.8)
+        txt2 = txt1.variant("txt2")
+        self.assertEqual("txt2", txt2.text, "text changed")
+        self.assertIsNone(txt2.angle, "angle kept")
+        self.assertEqual((0.5, 0.8), txt2.x_range, "position kept")
+
     def test_init(self):
         txt1 = types.Text("txt1")
         txt1.fill = [0, 1, 0]

tools/live_edit.py

@@ -30,7 +30,7 @@ while True:
     count = 0
     for meme_id in meme_db.LIST:
         meme = meme_db.get_meme(meme_id)
-        img = img_factory.build_image(meme.template, meme.texts, debug=True)
+        img = img_factory.build_from_template(meme.template, meme.texts, debug=True)
         if img is not None:
             img.save(path.join(dst_dir, meme.template))
             count += 1