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Font size support

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This commit is contained in:
Ignacio Rivero
2026-02-19 18:47:16 -03:00
parent 052723bdbc
commit 34733206c2
3 changed files with 63 additions and 28 deletions
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68
app.py
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@@ -17,10 +17,16 @@ FONT_PATH = "./fonts/ubuntu/Ubuntu-Regular.ttf"
FONT_PATH_BOLD = "./fonts/ubuntu/Ubuntu-Bold.ttf"
FONT_PATH_OBLIQUE = "./fonts/ubuntu/Ubuntu-Italic.ttf"
FONT_PATH_BOLDITALIC = "./fonts/ubuntu/Ubuntu-BoldItalic.ttf"
FONT_SIZE = 24
HEADER_SIZE_1 = 56
HEADER_SIZE_2 = 34
HEADER_SIZE_3 = 28
DEFAULT_FONT_SIZE = 24
FONT_SIZE_OPTIONS = {
"small": 18,
"normal": 24,
"large": 30,
"xlarge": 36,
}
HEADER_RATIO_1 = 56 / 24
HEADER_RATIO_2 = 34 / 24
HEADER_RATIO_3 = 28 / 24
BANNER_FONT_SIZE = 300
IMAGE_WIDTH = 384
BULLET_CHAR = "• "
@@ -343,18 +349,24 @@ def wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, max_w
if line:
yield line
def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False):
font = ImageFont.truetype(FONT_PATH, FONT_SIZE)
font_bold = ImageFont.truetype(FONT_PATH_BOLD, FONT_SIZE)
font_italic = ImageFont.truetype(FONT_PATH_OBLIQUE, FONT_SIZE)
def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False, font_size=None):
if font_size is None:
font_size = DEFAULT_FONT_SIZE
header_size_1 = round(font_size * HEADER_RATIO_1)
header_size_2 = round(font_size * HEADER_RATIO_2)
header_size_3 = round(font_size * HEADER_RATIO_3)
font = ImageFont.truetype(FONT_PATH, font_size)
font_bold = ImageFont.truetype(FONT_PATH_BOLD, font_size)
font_italic = ImageFont.truetype(FONT_PATH_OBLIQUE, font_size)
font_banner = ImageFont.truetype(FONT_PATH_BOLD, BANNER_FONT_SIZE)
try:
font_bolditalic = ImageFont.truetype(FONT_PATH_BOLDITALIC, FONT_SIZE)
font_bolditalic = ImageFont.truetype(FONT_PATH_BOLDITALIC, font_size)
except:
font_bolditalic = None
font_h1 = ImageFont.truetype(FONT_PATH_BOLD, HEADER_SIZE_1)
font_h2 = ImageFont.truetype(FONT_PATH_BOLD, HEADER_SIZE_2)
font_h3 = ImageFont.truetype(FONT_PATH_BOLD, HEADER_SIZE_3)
font_h1 = ImageFont.truetype(FONT_PATH_BOLD, header_size_1)
font_h2 = ImageFont.truetype(FONT_PATH_BOLD, header_size_2)
font_h3 = ImageFont.truetype(FONT_PATH_BOLD, header_size_3)
if bannermode:
# Remove line breaks for single-line banner
@@ -392,17 +404,17 @@ def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False):
image = bleh_image_from_url(tag[1], dithering, printmode)
lines_out.append(('image', image))
except Exception as e:
lines_out.append(('text', [('text', f"[Imagen inválida: {e}]")], font, FONT_SIZE))
lines_out.append(('text', [('text', f"[Imagen inválida: {e}]")], font, font_size))
elif tag[0] == 'userimage':
if uploaded_img_bytes:
try:
image = bleh_image_from_bytes(uploaded_img_bytes, dithering, printmode)
lines_out.append(('image', image))
except Exception as e:
lines_out.append(('text', [('text', f"[Error al procesar imagen]")], font, FONT_SIZE))
lines_out.append(('text', [('text', f"[Error al procesar imagen]")], font, font_size))
print(f"Image processing error: {e}")
else:
lines_out.append(('text', [('text', "[No se subió una imagen]")], font, FONT_SIZE))
lines_out.append(('text', [('text', "[No se subió una imagen]")], font, font_size))
elif tag[0] == 'hr':
lines_out.append(('hr',))
elif tag[0] == 'header':
@@ -410,13 +422,13 @@ def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False):
segments = tag[2]
if header_level == 1:
font_h = font_h1
size_h = HEADER_SIZE_1
size_h = header_size_1
elif header_level == 2:
font_h = font_h2
size_h = HEADER_SIZE_2
size_h = header_size_2
else:
font_h = font_h3
size_h = HEADER_SIZE_3
size_h = header_size_3
for wrapped in wrap_segments(segments, font_h, font_h, font_h, font_h, IMAGE_WIDTH):
lines_out.append(('header', wrapped, font_h, size_h))
elif tag[0] == 'bullet':
@@ -426,9 +438,9 @@ def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False):
wrapped_lines = list(wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, IMAGE_WIDTH - bullet_w, start_x=0))
for i, wrapped in enumerate(wrapped_lines):
if i == 0:
lines_out.append(('bullet', wrapped, bullet_font, FONT_SIZE, True, bullet_w))
lines_out.append(('bullet', wrapped, bullet_font, font_size, True, bullet_w))
else:
lines_out.append(('bullet', wrapped, bullet_font, FONT_SIZE, False, bullet_w))
lines_out.append(('bullet', wrapped, bullet_font, font_size, False, bullet_w))
elif tag[0] == 'ordered':
idx, segments = tag[1], tag[2]
num_str = f"{idx}. "
@@ -437,13 +449,13 @@ def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False):
wrapped_lines = list(wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, IMAGE_WIDTH - num_w, start_x=0))
for i, wrapped in enumerate(wrapped_lines):
if i == 0:
lines_out.append(('ordered', wrapped, number_font, FONT_SIZE, num_str, True, num_w))
lines_out.append(('ordered', wrapped, number_font, font_size, num_str, True, num_w))
else:
lines_out.append(('ordered', wrapped, number_font, FONT_SIZE, num_str, False, num_w))
lines_out.append(('ordered', wrapped, number_font, font_size, num_str, False, num_w))
else: # normal text
segments = tag[1]
for wrapped in wrap_segments(segments, font, font_bold, font_italic, font_bolditalic, IMAGE_WIDTH):
lines_out.append(('text', wrapped, font, FONT_SIZE))
lines_out.append(('text', wrapped, font, font_size))
# Compute total height, including images
height = 10 # Top margin
@@ -453,7 +465,7 @@ def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False):
elif item[0] == 'hr':
height += 10
elif item[0] == 'blank':
height += FONT_SIZE
height += font_size
elif item[0] == 'image':
img = item[1]
height += img.height + 10 # add margin below image
@@ -463,7 +475,7 @@ def render(md, dithering, printmode, uploaded_img_bytes=None, bannermode=False):
y = 0
for item in lines_out:
if item[0] == 'blank':
y += FONT_SIZE
y += font_size
elif item[0] == 'hr':
draw.line((0, y + 5, IMAGE_WIDTH, y + 5), fill=0, width=2)
y += 10
@@ -572,11 +584,14 @@ def index():
dithering = request.form.get("dithering", "floyd")
printmode = request.form.get("printmode", "1bpp")
bannermode = bool(request.form.get("bannermode"))
image = render(md, dithering, printmode, uploaded_img_bytes, bannermode=bannermode)
fontsize_key = request.form.get("fontsize", "normal")
font_size = FONT_SIZE_OPTIONS.get(fontsize_key, DEFAULT_FONT_SIZE)
image = render(md, dithering, printmode, uploaded_img_bytes, bannermode=bannermode, font_size=font_size)
session['dithering'] = dithering
session['printmode'] = printmode
session['rotation'] = rotation
session['bannermode'] = bannermode
session['fontsize'] = fontsize_key
buf = io.BytesIO()
image.save(buf, format="PNG")
buf.seek(0)
@@ -617,6 +632,7 @@ def index():
current_rotation=session.get('rotation', 0),
current_printmode=session.get('printmode', '1bpp'),
current_bannermode=session.get('bannermode', False),
current_fontsize=session.get('fontsize', 'normal'),
t=t,
lang=lang
)