1145 lines
37 KiB
Python
1145 lines
37 KiB
Python
#!/usr/bin/env python3
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"""
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Generate test EPUBs for rendering verification.
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Creates EPUBs to verify:
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- Image: Grayscale rendering (4 levels), scaling, centering, cache performance
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- Text: pre element line breaks, blank lines, nested code element
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"""
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import os
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import zipfile
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from pathlib import Path
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try:
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from PIL import Image, ImageDraw, ImageFont
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except ImportError:
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print("Please install Pillow: pip install Pillow")
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exit(1)
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OUTPUT_DIR = Path(__file__).parent.parent / "test" / "epubs"
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SCREEN_WIDTH = 480
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SCREEN_HEIGHT = 800
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def get_font(size=20):
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"""Get a font, falling back to default if needed."""
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import sys
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candidates = []
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if sys.platform == "darwin":
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candidates = [
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"/System/Library/Fonts/Helvetica.ttc",
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"/Library/Fonts/Arial.ttf",
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]
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elif sys.platform == "win32":
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windir = os.environ.get("WINDIR", "C:\\Windows")
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candidates = [
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os.path.join(windir, "Fonts", "arial.ttf"),
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os.path.join(windir, "Fonts", "calibri.ttf"),
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]
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else:
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candidates = [
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"/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
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"/usr/share/fonts/TTF/DejaVuSans.ttf",
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]
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for path in candidates:
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try:
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return ImageFont.truetype(path, size)
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except:
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continue
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return ImageFont.load_default()
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def draw_text_centered(draw, y, text, font, fill=0):
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"""Draw centered text at given y position."""
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bbox = draw.textbbox((0, 0), text, font=font)
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text_width = bbox[2] - bbox[0]
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x = (draw.im.size[0] - text_width) // 2
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draw.text((x, y), text, font=font, fill=fill)
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def draw_text_wrapped(draw, x, y, text, font, max_width, fill=0):
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"""Draw text with word wrapping."""
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words = text.split()
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lines = []
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current_line = []
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for word in words:
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test_line = " ".join(current_line + [word])
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bbox = draw.textbbox((0, 0), test_line, font=font)
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if bbox[2] - bbox[0] <= max_width:
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current_line.append(word)
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else:
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if current_line:
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lines.append(" ".join(current_line))
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current_line = [word]
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if current_line:
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lines.append(" ".join(current_line))
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line_height = font.size + 4 if hasattr(font, "size") else 20
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for i, line in enumerate(lines):
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draw.text((x, y + i * line_height), line, font=font, fill=fill)
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return len(lines) * line_height
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def create_grayscale_test_image(filename, is_png=True):
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"""
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Create image with 4 grayscale squares to verify 4-level rendering.
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"""
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width, height = 400, 600
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img = Image.new("L", (width, height), 255)
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draw = ImageDraw.Draw(img)
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font = get_font(16)
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font_small = get_font(14)
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# Title
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draw_text_centered(draw, 10, "GRAYSCALE TEST", font, fill=0)
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draw_text_centered(draw, 35, "Verify 4 distinct gray levels", font_small, fill=64)
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# Draw 4 grayscale squares
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square_size = 70
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start_y = 65
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gap = 10
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# Gray levels chosen to avoid Bayer dithering threshold boundaries (±40 dither offset)
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# Thresholds at 64, 128, 192 - use values in the middle of each band for solid output
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# Safe zones: 0-23 (black), 88-103 (dark gray), 152-167 (light gray), 232-255 (white)
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levels = [
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(0, "Level 0: BLACK"),
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(96, "Level 1: DARK GRAY"),
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(160, "Level 2: LIGHT GRAY"),
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(255, "Level 3: WHITE"),
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]
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for i, (gray_value, label) in enumerate(levels):
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y = start_y + i * (square_size + gap + 22)
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x = (width - square_size) // 2
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# Draw square with border
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draw.rectangle([x - 2, y - 2, x + square_size + 2, y + square_size + 2], fill=0)
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draw.rectangle([x, y, x + square_size, y + square_size], fill=gray_value)
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# Label below square
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bbox = draw.textbbox((0, 0), label, font=font_small)
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label_width = bbox[2] - bbox[0]
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draw.text(
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((width - label_width) // 2, y + square_size + 5),
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label,
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font=font_small,
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fill=0,
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)
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# Instructions at bottom (well below the last square)
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y = height - 70
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draw_text_centered(draw, y, "PASS: 4 distinct shades visible", font_small, fill=0)
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draw_text_centered(draw, y + 20, "FAIL: Only black/white or", font_small, fill=64)
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draw_text_centered(draw, y + 38, "muddy/indistinct grays", font_small, fill=64)
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# Save
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if is_png:
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img.save(filename, "PNG")
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else:
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img.save(filename, "JPEG", quality=95)
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def create_centering_test_image(filename, is_png=True):
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"""
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Create image with border markers to verify centering.
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"""
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width, height = 350, 400
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img = Image.new("L", (width, height), 255)
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draw = ImageDraw.Draw(img)
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font = get_font(16)
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font_small = get_font(14)
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# Draw border
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draw.rectangle([0, 0, width - 1, height - 1], outline=0, width=3)
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# Corner markers
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marker_size = 20
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for x, y in [
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(0, 0),
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(width - marker_size, 0),
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(0, height - marker_size),
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(width - marker_size, height - marker_size),
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]:
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draw.rectangle([x, y, x + marker_size, y + marker_size], fill=0)
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# Center cross
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cx, cy = width // 2, height // 2
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draw.line([cx - 30, cy, cx + 30, cy], fill=0, width=2)
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draw.line([cx, cy - 30, cx, cy + 30], fill=0, width=2)
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# Title
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draw_text_centered(draw, 40, "CENTERING TEST", font, fill=0)
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# Instructions
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y = 80
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draw_text_centered(draw, y, "Image should be centered", font_small, fill=0)
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draw_text_centered(draw, y + 20, "horizontally on screen", font_small, fill=0)
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y = 150
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draw_text_centered(draw, y, "Check:", font_small, fill=0)
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draw_text_centered(
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draw, y + 25, "- Equal margins left & right", font_small, fill=64
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)
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draw_text_centered(draw, y + 45, "- All 4 corners visible", font_small, fill=64)
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draw_text_centered(
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draw, y + 65, "- Border is complete rectangle", font_small, fill=64
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)
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# Pass/fail
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y = height - 80
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draw_text_centered(
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draw, y, "PASS: Centered, all corners visible", font_small, fill=0
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)
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draw_text_centered(draw, y + 20, "FAIL: Off-center or cropped", font_small, fill=64)
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if is_png:
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img.save(filename, "PNG")
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else:
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img.save(filename, "JPEG", quality=95)
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def create_scaling_test_image(filename, is_png=True):
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"""
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Create large image to verify scaling works.
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"""
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# Make image larger than screen but within decoder limits (max 2048x1536)
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width, height = 1200, 1500
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img = Image.new("L", (width, height), 240)
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draw = ImageDraw.Draw(img)
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font = get_font(48)
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font_medium = get_font(32)
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font_small = get_font(24)
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# Border
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draw.rectangle([0, 0, width - 1, height - 1], outline=0, width=8)
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draw.rectangle([20, 20, width - 21, height - 21], outline=128, width=4)
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# Title
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draw_text_centered(draw, 60, "SCALING TEST", font, fill=0)
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draw_text_centered(
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draw,
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130,
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f"Original: {width}x{height} (larger than screen)",
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font_medium,
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fill=64,
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)
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# Grid pattern to verify scaling quality
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grid_start_y = 220
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grid_size = 400
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cell_size = 50
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draw_text_centered(
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draw,
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grid_start_y - 40,
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"Grid pattern (check for artifacts):",
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font_small,
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fill=0,
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)
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grid_x = (width - grid_size) // 2
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for row in range(grid_size // cell_size):
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for col in range(grid_size // cell_size):
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x = grid_x + col * cell_size
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y = grid_start_y + row * cell_size
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if (row + col) % 2 == 0:
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draw.rectangle([x, y, x + cell_size, y + cell_size], fill=0)
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else:
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draw.rectangle([x, y, x + cell_size, y + cell_size], fill=200)
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# Size indicator bars
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y = grid_start_y + grid_size + 60
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draw_text_centered(
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draw, y, "Width markers (should fit on screen):", font_small, fill=0
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)
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bar_y = y + 40
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# Full width bar
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draw.rectangle([50, bar_y, width - 50, bar_y + 30], fill=0)
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draw.text((60, bar_y + 5), "FULL WIDTH", font=font_small, fill=255)
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# Half width bar
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bar_y += 60
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half_start = width // 4
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draw.rectangle([half_start, bar_y, width - half_start, bar_y + 30], fill=85)
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draw.text((half_start + 10, bar_y + 5), "HALF WIDTH", font=font_small, fill=255)
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# Instructions
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y = height - 350
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draw_text_centered(draw, y, "VERIFICATION:", font_medium, fill=0)
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y += 50
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instructions = [
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"1. Image fits within screen bounds",
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"2. All borders visible (not cropped)",
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"3. Grid pattern clear (no moire)",
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"4. Text readable after scaling",
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"5. Aspect ratio preserved (not stretched)",
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]
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for i, text in enumerate(instructions):
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draw_text_centered(draw, y + i * 35, text, font_small, fill=64)
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y = height - 100
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draw_text_centered(
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draw, y, "PASS: Scaled down, readable, complete", font_small, fill=0
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)
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draw_text_centered(
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draw, y + 30, "FAIL: Cropped, distorted, or unreadable", font_small, fill=64
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)
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if is_png:
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img.save(filename, "PNG")
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else:
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img.save(filename, "JPEG", quality=95)
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def create_wide_scaling_test_image(filename, is_png=True):
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"""
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Create wide image (1807x736) to test scaling with specific dimensions
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that can trigger cache dimension mismatches due to floating-point rounding.
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"""
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width, height = 1807, 736
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img = Image.new("L", (width, height), 240)
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draw = ImageDraw.Draw(img)
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font = get_font(48)
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font_medium = get_font(32)
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font_small = get_font(24)
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# Border
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draw.rectangle([0, 0, width - 1, height - 1], outline=0, width=6)
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draw.rectangle([15, 15, width - 16, height - 16], outline=128, width=3)
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# Title
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draw_text_centered(draw, 40, "WIDE SCALING TEST", font, fill=0)
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draw_text_centered(
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draw,
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100,
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f"Original: {width}x{height} (tests rounding edge case)",
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font_medium,
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fill=64,
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)
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# Grid pattern to verify scaling quality
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grid_start_x = 100
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grid_start_y = 180
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grid_width = 600
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grid_height = 300
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cell_size = 50
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draw.text(
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(grid_start_x, grid_start_y - 35),
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"Grid pattern (check for artifacts):",
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font=font_small,
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fill=0,
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)
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for row in range(grid_height // cell_size):
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for col in range(grid_width // cell_size):
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x = grid_start_x + col * cell_size
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y = grid_start_y + row * cell_size
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if (row + col) % 2 == 0:
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draw.rectangle([x, y, x + cell_size, y + cell_size], fill=0)
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else:
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draw.rectangle([x, y, x + cell_size, y + cell_size], fill=200)
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# Verification section on the right
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text_x = 800
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text_y = 180
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draw.text((text_x, text_y), "VERIFICATION:", font=font_medium, fill=0)
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text_y += 50
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instructions = [
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"1. Image fits within screen",
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"2. All borders visible",
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"3. Grid pattern clear",
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"4. Text readable",
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"5. No double-decode in log",
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]
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for i, text in enumerate(instructions):
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draw.text((text_x, text_y + i * 35), text, font=font_small, fill=64)
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# Dimension info
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draw.text((text_x, 450), f"Dimensions: {width}x{height}", font=font_small, fill=0)
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draw.text((text_x, 485), "Tests cache dimension matching", font=font_small, fill=64)
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# Pass/fail at bottom
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y = height - 80
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draw_text_centered(
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draw, y, "PASS: Single decode, cached correctly", font_small, fill=0
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)
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draw_text_centered(
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draw, y + 30, "FAIL: Cache mismatch, multiple decodes", font_small, fill=64
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)
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if is_png:
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img.save(filename, "PNG")
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else:
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img.save(filename, "JPEG", quality=95)
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def create_cache_test_image(filename, page_num, is_png=True):
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"""
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Create image for cache performance testing.
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"""
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width, height = 400, 300
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img = Image.new("L", (width, height), 255)
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draw = ImageDraw.Draw(img)
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font = get_font(18)
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font_small = get_font(14)
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font_large = get_font(36)
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# Border
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draw.rectangle([0, 0, width - 1, height - 1], outline=0, width=2)
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# Page number prominent
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draw_text_centered(draw, 30, f"CACHE TEST PAGE {page_num}", font, fill=0)
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draw_text_centered(draw, 80, f"#{page_num}", font_large, fill=0)
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# Instructions
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y = 140
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draw_text_centered(draw, y, "Navigate away then return", font_small, fill=64)
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draw_text_centered(
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draw, y + 25, "Second load should be faster", font_small, fill=64
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)
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y = 220
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draw_text_centered(draw, y, "PASS: Faster reload from cache", font_small, fill=0)
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draw_text_centered(
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draw, y + 20, "FAIL: Same slow decode each time", font_small, fill=64
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)
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if is_png:
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img.save(filename, "PNG")
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else:
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img.save(filename, "JPEG", quality=95)
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def create_gradient_test_image(filename, is_png=True):
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"""
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Create horizontal gradient to test grayscale banding.
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"""
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width, height = 400, 500
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img = Image.new("L", (width, height), 255)
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draw = ImageDraw.Draw(img)
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font = get_font(16)
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font_small = get_font(14)
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draw_text_centered(draw, 10, "GRADIENT TEST", font, fill=0)
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draw_text_centered(
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draw, 35, "Smooth gradient → 4 bands expected", font_small, fill=64
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)
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# Horizontal gradient
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gradient_y = 70
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gradient_height = 100
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for x in range(width):
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gray = int(255 * x / width)
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draw.line([(x, gradient_y), (x, gradient_y + gradient_height)], fill=gray)
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# Border around gradient
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draw.rectangle(
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[0, gradient_y - 1, width - 1, gradient_y + gradient_height + 1],
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outline=0,
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width=1,
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)
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# Labels
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y = gradient_y + gradient_height + 10
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draw.text((5, y), "BLACK", font=font_small, fill=0)
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draw.text((width - 50, y), "WHITE", font=font_small, fill=0)
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# 4-step gradient (what it should look like)
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y = 220
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draw_text_centered(
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draw, y, "Expected result (4 distinct bands):", font_small, fill=0
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)
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band_y = y + 25
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band_height = 60
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band_width = width // 4
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for i, gray in enumerate([0, 85, 170, 255]):
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x = i * band_width
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draw.rectangle([x, band_y, x + band_width, band_y + band_height], fill=gray)
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draw.rectangle(
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[0, band_y - 1, width - 1, band_y + band_height + 1], outline=0, width=1
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)
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# Vertical gradient
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y = 340
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draw_text_centered(draw, y, "Vertical gradient:", font_small, fill=0)
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vgrad_y = y + 25
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vgrad_height = 80
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for row in range(vgrad_height):
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gray = int(255 * row / vgrad_height)
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draw.line([(50, vgrad_y + row), (width - 50, vgrad_y + row)], fill=gray)
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draw.rectangle(
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[49, vgrad_y - 1, width - 49, vgrad_y + vgrad_height + 1], outline=0, width=1
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)
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# Pass/fail
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y = height - 50
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draw_text_centered(draw, y, "PASS: Clear 4-band quantization", font_small, fill=0)
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draw_text_centered(
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draw, y + 20, "FAIL: Binary/noisy dithering", font_small, fill=64
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)
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if is_png:
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img.save(filename, "PNG")
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else:
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img.save(filename, "JPEG", quality=95)
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def create_format_test_image(filename, format_name, is_png=True):
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"""
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Create simple image to verify format support.
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"""
|
|
width, height = 350, 250
|
|
img = Image.new("L", (width, height), 255)
|
|
draw = ImageDraw.Draw(img)
|
|
font = get_font(20)
|
|
font_large = get_font(36)
|
|
font_small = get_font(14)
|
|
|
|
# Border
|
|
draw.rectangle([0, 0, width - 1, height - 1], outline=0, width=3)
|
|
|
|
# Format name
|
|
draw_text_centered(draw, 30, f"{format_name} FORMAT TEST", font, fill=0)
|
|
draw_text_centered(draw, 80, format_name, font_large, fill=0)
|
|
|
|
# Checkmark area
|
|
y = 140
|
|
draw_text_centered(draw, y, "If you can read this,", font_small, fill=64)
|
|
draw_text_centered(
|
|
draw, y + 20, f"{format_name} decoding works!", font_small, fill=64
|
|
)
|
|
|
|
y = height - 40
|
|
draw_text_centered(
|
|
draw, y, f"PASS: {format_name} image visible", font_small, fill=0
|
|
)
|
|
|
|
if is_png:
|
|
img.save(filename, "PNG")
|
|
else:
|
|
img.save(filename, "JPEG", quality=95)
|
|
|
|
|
|
def create_epub(epub_path, title, chapters):
|
|
"""
|
|
Create an EPUB file with the given chapters.
|
|
|
|
chapters: list of (chapter_title, html_content, images)
|
|
images: list of (image_filename, image_data)
|
|
"""
|
|
with zipfile.ZipFile(epub_path, "w", zipfile.ZIP_DEFLATED) as epub:
|
|
# mimetype (must be first, uncompressed)
|
|
epub.writestr(
|
|
"mimetype", "application/epub+zip", compress_type=zipfile.ZIP_STORED
|
|
)
|
|
|
|
# Container
|
|
container_xml = """<?xml version="1.0" encoding="UTF-8"?>
|
|
<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
|
|
<rootfiles>
|
|
<rootfile full-path="OEBPS/content.opf" media-type="application/oebps-package+xml"/>
|
|
</rootfiles>
|
|
</container>"""
|
|
epub.writestr("META-INF/container.xml", container_xml)
|
|
|
|
# Collect all images and chapters
|
|
manifest_items = []
|
|
spine_items = []
|
|
|
|
# Add chapters and images
|
|
for i, (chapter_title, html_content, images) in enumerate(chapters):
|
|
chapter_id = f"chapter{i + 1}"
|
|
chapter_file = f"chapter{i + 1}.xhtml"
|
|
|
|
# Add images for this chapter
|
|
for img_filename, img_data in images:
|
|
media_type = (
|
|
"image/png" if img_filename.endswith(".png") else "image/jpeg"
|
|
)
|
|
manifest_items.append(
|
|
f' <item id="{img_filename.replace(".", "_")}" href="images/{img_filename}" media-type="{media_type}"/>'
|
|
)
|
|
epub.writestr(f"OEBPS/images/{img_filename}", img_data)
|
|
|
|
# Add chapter
|
|
manifest_items.append(
|
|
f' <item id="{chapter_id}" href="{chapter_file}" media-type="application/xhtml+xml"/>'
|
|
)
|
|
spine_items.append(f' <itemref idref="{chapter_id}"/>')
|
|
epub.writestr(f"OEBPS/{chapter_file}", html_content)
|
|
|
|
# content.opf
|
|
content_opf = f"""<?xml version="1.0" encoding="UTF-8"?>
|
|
<package xmlns="http://www.idpf.org/2007/opf" version="3.0" unique-identifier="uid">
|
|
<metadata xmlns:dc="http://purl.org/dc/elements/1.1/">
|
|
<dc:identifier id="uid">test-epub-{title.lower().replace(" ", "-")}</dc:identifier>
|
|
<dc:title>{title}</dc:title>
|
|
<dc:language>en</dc:language>
|
|
</metadata>
|
|
<manifest>
|
|
<item id="nav" href="nav.xhtml" media-type="application/xhtml+xml" properties="nav"/>
|
|
{chr(10).join(manifest_items)}
|
|
</manifest>
|
|
<spine>
|
|
{chr(10).join(spine_items)}
|
|
</spine>
|
|
</package>"""
|
|
epub.writestr("OEBPS/content.opf", content_opf)
|
|
|
|
# Navigation document
|
|
nav_items = "\n".join(
|
|
[
|
|
f' <li><a href="chapter{i + 1}.xhtml">{chapters[i][0]}</a></li>'
|
|
for i in range(len(chapters))
|
|
]
|
|
)
|
|
nav_xhtml = f"""<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html>
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:epub="http://www.idpf.org/2007/ops">
|
|
<head><title>Navigation</title></head>
|
|
<body>
|
|
<nav epub:type="toc">
|
|
<h1>Contents</h1>
|
|
<ol>
|
|
{nav_items}
|
|
</ol>
|
|
</nav>
|
|
</body>
|
|
</html>"""
|
|
epub.writestr("OEBPS/nav.xhtml", nav_xhtml)
|
|
|
|
|
|
def make_chapter(title, body_content):
|
|
"""Create XHTML chapter content."""
|
|
return f"""<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html>
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|
<head><title>{title}</title></head>
|
|
<body>
|
|
<h1>{title}</h1>
|
|
{body_content}
|
|
</body>
|
|
</html>"""
|
|
|
|
|
|
def main():
|
|
OUTPUT_DIR.mkdir(exist_ok=True)
|
|
|
|
# Temp directory for images
|
|
import tempfile
|
|
|
|
with tempfile.TemporaryDirectory() as tmpdir:
|
|
tmpdir = Path(tmpdir)
|
|
|
|
print("Generating test images...")
|
|
|
|
# Generate all test images
|
|
images = {}
|
|
|
|
# JPEG tests
|
|
create_grayscale_test_image(tmpdir / "grayscale_test.jpg", is_png=False)
|
|
create_centering_test_image(tmpdir / "centering_test.jpg", is_png=False)
|
|
create_scaling_test_image(tmpdir / "scaling_test.jpg", is_png=False)
|
|
create_wide_scaling_test_image(tmpdir / "wide_scaling_test.jpg", is_png=False)
|
|
create_gradient_test_image(tmpdir / "gradient_test.jpg", is_png=False)
|
|
create_format_test_image(tmpdir / "jpeg_format.jpg", "JPEG", is_png=False)
|
|
create_cache_test_image(tmpdir / "cache_test_1.jpg", 1, is_png=False)
|
|
create_cache_test_image(tmpdir / "cache_test_2.jpg", 2, is_png=False)
|
|
|
|
# PNG tests
|
|
create_grayscale_test_image(tmpdir / "grayscale_test.png", is_png=True)
|
|
create_centering_test_image(tmpdir / "centering_test.png", is_png=True)
|
|
create_scaling_test_image(tmpdir / "scaling_test.png", is_png=True)
|
|
create_wide_scaling_test_image(tmpdir / "wide_scaling_test.png", is_png=True)
|
|
create_gradient_test_image(tmpdir / "gradient_test.png", is_png=True)
|
|
create_format_test_image(tmpdir / "png_format.png", "PNG", is_png=True)
|
|
create_cache_test_image(tmpdir / "cache_test_1.png", 1, is_png=True)
|
|
create_cache_test_image(tmpdir / "cache_test_2.png", 2, is_png=True)
|
|
|
|
# Read all images
|
|
for img_file in tmpdir.glob("*.*"):
|
|
images[img_file.name] = img_file.read_bytes()
|
|
|
|
print("Creating JPEG test EPUB...")
|
|
jpeg_chapters = [
|
|
(
|
|
"Introduction",
|
|
make_chapter(
|
|
"JPEG Image Tests",
|
|
"""
|
|
<p>This EPUB tests JPEG image rendering.</p>
|
|
<p>Navigate through chapters to verify each test case.</p>
|
|
<p><strong>Test Plan:</strong></p>
|
|
<ul>
|
|
<li>Grayscale rendering (4 levels)</li>
|
|
<li>Image centering</li>
|
|
<li>Large image scaling</li>
|
|
<li>Cache performance</li>
|
|
</ul>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"1. JPEG Format",
|
|
make_chapter(
|
|
"JPEG Format Test",
|
|
"""
|
|
<p>Basic JPEG decoding test.</p>
|
|
<img src="images/jpeg_format.jpg" alt="JPEG format test"/>
|
|
<p>If the image above is visible, JPEG decoding works.</p>
|
|
""",
|
|
),
|
|
[("jpeg_format.jpg", images["jpeg_format.jpg"])],
|
|
),
|
|
(
|
|
"2. Grayscale",
|
|
make_chapter(
|
|
"Grayscale Test",
|
|
"""
|
|
<p>Verify 4 distinct gray levels are visible.</p>
|
|
<img src="images/grayscale_test.jpg" alt="Grayscale test"/>
|
|
""",
|
|
),
|
|
[("grayscale_test.jpg", images["grayscale_test.jpg"])],
|
|
),
|
|
(
|
|
"3. Gradient",
|
|
make_chapter(
|
|
"Gradient Test",
|
|
"""
|
|
<p>Verify gradient quantizes to 4 bands.</p>
|
|
<img src="images/gradient_test.jpg" alt="Gradient test"/>
|
|
""",
|
|
),
|
|
[("gradient_test.jpg", images["gradient_test.jpg"])],
|
|
),
|
|
(
|
|
"4. Centering",
|
|
make_chapter(
|
|
"Centering Test",
|
|
"""
|
|
<p>Verify image is centered horizontally.</p>
|
|
<img src="images/centering_test.jpg" alt="Centering test"/>
|
|
""",
|
|
),
|
|
[("centering_test.jpg", images["centering_test.jpg"])],
|
|
),
|
|
(
|
|
"5. Scaling",
|
|
make_chapter(
|
|
"Scaling Test",
|
|
"""
|
|
<p>This image is 1200x1500 pixels - larger than the screen.</p>
|
|
<p>It should be scaled down to fit.</p>
|
|
<img src="images/scaling_test.jpg" alt="Scaling test"/>
|
|
""",
|
|
),
|
|
[("scaling_test.jpg", images["scaling_test.jpg"])],
|
|
),
|
|
(
|
|
"6. Wide Scaling",
|
|
make_chapter(
|
|
"Wide Scaling Test",
|
|
"""
|
|
<p>This image is 1807x736 pixels - a wide landscape format.</p>
|
|
<p>Tests scaling with dimensions that can cause cache mismatches.</p>
|
|
<img src="images/wide_scaling_test.jpg" alt="Wide scaling test"/>
|
|
""",
|
|
),
|
|
[("wide_scaling_test.jpg", images["wide_scaling_test.jpg"])],
|
|
),
|
|
(
|
|
"7. Cache Test A",
|
|
make_chapter(
|
|
"Cache Test - Page A",
|
|
"""
|
|
<p>First cache test page. Note the load time.</p>
|
|
<img src="images/cache_test_1.jpg" alt="Cache test 1"/>
|
|
<p>Navigate to next page, then come back.</p>
|
|
""",
|
|
),
|
|
[("cache_test_1.jpg", images["cache_test_1.jpg"])],
|
|
),
|
|
(
|
|
"8. Cache Test B",
|
|
make_chapter(
|
|
"Cache Test - Page B",
|
|
"""
|
|
<p>Second cache test page.</p>
|
|
<img src="images/cache_test_2.jpg" alt="Cache test 2"/>
|
|
<p>Navigate back to Page A - it should load faster from cache.</p>
|
|
""",
|
|
),
|
|
[("cache_test_2.jpg", images["cache_test_2.jpg"])],
|
|
),
|
|
(
|
|
"9. Alignment Bleed",
|
|
make_chapter(
|
|
"Image Centering Bleed Test",
|
|
"""
|
|
<p>Tests that image centering does not bleed into following text blocks (issue #1026).</p>
|
|
<p>Set Paragraph Alignment to Justify and Embedded Style to OFF before testing.</p>
|
|
<p>All paragraphs below the images should be justified, not centered.</p>
|
|
<h1 class="hidden"></h1>
|
|
<p><img src="images/centering_test.jpg" alt="Test image"/></p>
|
|
<div>
|
|
<p>FIRST PARAGRAPH after image. This paragraph follows an empty heading and an image-only paragraph. With the bug present, this text appears centered instead of justified because the empty heading's default Center alignment bleeds through the chain of empty text blocks. Lorem ipsum dolor sit amet, consectetur adipiscing elit sed do eiusmod tempor.</p>
|
|
<p>SECOND PARAGRAPH in the same div. This paragraph should always be justified because the first paragraph's text block was flushed. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident sunt in culpa qui officia.</p>
|
|
</div>
|
|
""",
|
|
),
|
|
[],
|
|
), # centering_test.jpg already included by chapter 4
|
|
]
|
|
|
|
create_epub(
|
|
OUTPUT_DIR / "test_jpeg_images.epub", "JPEG Image Tests", jpeg_chapters
|
|
)
|
|
|
|
print("Creating PNG test EPUB...")
|
|
png_chapters = [
|
|
(
|
|
"Introduction",
|
|
make_chapter(
|
|
"PNG Image Tests",
|
|
"""
|
|
<p>This EPUB tests PNG image rendering.</p>
|
|
<p>Navigate through chapters to verify each test case.</p>
|
|
<p><strong>Test Plan:</strong></p>
|
|
<ul>
|
|
<li>PNG decoding (no crash)</li>
|
|
<li>Grayscale rendering (4 levels)</li>
|
|
<li>Image centering</li>
|
|
<li>Large image scaling</li>
|
|
</ul>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"1. PNG Format",
|
|
make_chapter(
|
|
"PNG Format Test",
|
|
"""
|
|
<p>Basic PNG decoding test.</p>
|
|
<img src="images/png_format.png" alt="PNG format test"/>
|
|
<p>If the image above is visible and no crash occurred, PNG decoding works.</p>
|
|
""",
|
|
),
|
|
[("png_format.png", images["png_format.png"])],
|
|
),
|
|
(
|
|
"2. Grayscale",
|
|
make_chapter(
|
|
"Grayscale Test",
|
|
"""
|
|
<p>Verify 4 distinct gray levels are visible.</p>
|
|
<img src="images/grayscale_test.png" alt="Grayscale test"/>
|
|
""",
|
|
),
|
|
[("grayscale_test.png", images["grayscale_test.png"])],
|
|
),
|
|
(
|
|
"3. Gradient",
|
|
make_chapter(
|
|
"Gradient Test",
|
|
"""
|
|
<p>Verify gradient quantizes to 4 bands.</p>
|
|
<img src="images/gradient_test.png" alt="Gradient test"/>
|
|
""",
|
|
),
|
|
[("gradient_test.png", images["gradient_test.png"])],
|
|
),
|
|
(
|
|
"4. Centering",
|
|
make_chapter(
|
|
"Centering Test",
|
|
"""
|
|
<p>Verify image is centered horizontally.</p>
|
|
<img src="images/centering_test.png" alt="Centering test"/>
|
|
""",
|
|
),
|
|
[("centering_test.png", images["centering_test.png"])],
|
|
),
|
|
(
|
|
"5. Scaling",
|
|
make_chapter(
|
|
"Scaling Test",
|
|
"""
|
|
<p>This image is 1200x1500 pixels - larger than the screen.</p>
|
|
<p>It should be scaled down to fit.</p>
|
|
<img src="images/scaling_test.png" alt="Scaling test"/>
|
|
""",
|
|
),
|
|
[("scaling_test.png", images["scaling_test.png"])],
|
|
),
|
|
(
|
|
"6. Wide Scaling",
|
|
make_chapter(
|
|
"Wide Scaling Test",
|
|
"""
|
|
<p>This image is 1807x736 pixels - a wide landscape format.</p>
|
|
<p>Tests scaling with dimensions that can cause cache mismatches.</p>
|
|
<img src="images/wide_scaling_test.png" alt="Wide scaling test"/>
|
|
""",
|
|
),
|
|
[("wide_scaling_test.png", images["wide_scaling_test.png"])],
|
|
),
|
|
(
|
|
"7. Cache Test A",
|
|
make_chapter(
|
|
"Cache Test - Page A",
|
|
"""
|
|
<p>First cache test page. Note the load time.</p>
|
|
<img src="images/cache_test_1.png" alt="Cache test 1"/>
|
|
<p>Navigate to next page, then come back.</p>
|
|
""",
|
|
),
|
|
[("cache_test_1.png", images["cache_test_1.png"])],
|
|
),
|
|
(
|
|
"8. Cache Test B",
|
|
make_chapter(
|
|
"Cache Test - Page B",
|
|
"""
|
|
<p>Second cache test page.</p>
|
|
<img src="images/cache_test_2.png" alt="Cache test 2"/>
|
|
<p>Navigate back to Page A - it should load faster from cache.</p>
|
|
""",
|
|
),
|
|
[("cache_test_2.png", images["cache_test_2.png"])],
|
|
),
|
|
(
|
|
"9. Alignment Bleed",
|
|
make_chapter(
|
|
"Image Centering Bleed Test",
|
|
"""
|
|
<p>Tests that image centering does not bleed into following text blocks (issue #1026).</p>
|
|
<p>Set Paragraph Alignment to Justify and Embedded Style to OFF before testing.</p>
|
|
<p>All paragraphs below the images should be justified, not centered.</p>
|
|
<h1 class="hidden"></h1>
|
|
<p><img src="images/centering_test.png" alt="Test image"/></p>
|
|
<div>
|
|
<p>FIRST PARAGRAPH after image. This paragraph follows an empty heading and an image-only paragraph. With the bug present, this text appears centered instead of justified because the empty heading's default Center alignment bleeds through the chain of empty text blocks. Lorem ipsum dolor sit amet, consectetur adipiscing elit sed do eiusmod tempor.</p>
|
|
<p>SECOND PARAGRAPH in the same div. This paragraph should always be justified because the first paragraph's text block was flushed. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident sunt in culpa qui officia.</p>
|
|
</div>
|
|
""",
|
|
),
|
|
[],
|
|
), # centering_test.png already included by chapter 4
|
|
]
|
|
|
|
create_epub(
|
|
OUTPUT_DIR / "test_png_images.epub", "PNG Image Tests", png_chapters
|
|
)
|
|
|
|
print("Creating mixed format test EPUB...")
|
|
mixed_chapters = [
|
|
(
|
|
"Introduction",
|
|
make_chapter(
|
|
"Mixed Image Format Tests",
|
|
"""
|
|
<p>This EPUB contains both JPEG and PNG images.</p>
|
|
<p>Tests format detection and mixed rendering.</p>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"1. JPEG Image",
|
|
make_chapter(
|
|
"JPEG in Mixed EPUB",
|
|
"""
|
|
<p>This is a JPEG image:</p>
|
|
<img src="images/jpeg_format.jpg" alt="JPEG"/>
|
|
""",
|
|
),
|
|
[("jpeg_format.jpg", images["jpeg_format.jpg"])],
|
|
),
|
|
(
|
|
"2. PNG Image",
|
|
make_chapter(
|
|
"PNG in Mixed EPUB",
|
|
"""
|
|
<p>This is a PNG image:</p>
|
|
<img src="images/png_format.png" alt="PNG"/>
|
|
""",
|
|
),
|
|
[("png_format.png", images["png_format.png"])],
|
|
),
|
|
(
|
|
"3. Both Formats",
|
|
make_chapter(
|
|
"Both Formats on One Page",
|
|
"""
|
|
<p>JPEG image:</p>
|
|
<img src="images/grayscale_test.jpg" alt="JPEG grayscale"/>
|
|
<p>PNG image:</p>
|
|
<img src="images/grayscale_test.png" alt="PNG grayscale"/>
|
|
<p>Both should render with proper grayscale.</p>
|
|
""",
|
|
),
|
|
[
|
|
("grayscale_test.jpg", images["grayscale_test.jpg"]),
|
|
("grayscale_test.png", images["grayscale_test.png"]),
|
|
],
|
|
),
|
|
]
|
|
|
|
create_epub(
|
|
OUTPUT_DIR / "test_mixed_images.epub", "Mixed Format Tests", mixed_chapters
|
|
)
|
|
|
|
print("Creating text rendering test EPUB...")
|
|
text_chapters = [
|
|
(
|
|
"Introduction",
|
|
make_chapter(
|
|
"Text Rendering Tests",
|
|
"""
|
|
<p>This EPUB tests text rendering edge cases.</p>
|
|
<p><strong>Test Plan:</strong></p>
|
|
<ul>
|
|
<li>pre element: intrinsic line breaks preserved</li>
|
|
<li>pre element: leading/trailing blank lines</li>
|
|
<li>pre with inline code element</li>
|
|
<li>horizontal rules between paragraphs</li>
|
|
<li>superscript and subscript rendering</li>
|
|
</ul>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"1. pre Line Breaks",
|
|
make_chapter(
|
|
"pre: Intrinsic Line Breaks",
|
|
"""
|
|
<p>The block below is a single <pre> element. Each source line must appear on its own line:</p>
|
|
<pre>Line one
|
|
Line two
|
|
Line three</pre>
|
|
<p>Normal paragraph after the pre block. Text resumes as a regular wrapped paragraph.</p>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"2. pre Blank Lines",
|
|
make_chapter(
|
|
"pre: Blank Lines",
|
|
"""
|
|
<p>The pre block below contains intentional blank lines between code lines:</p>
|
|
<pre>First line
|
|
|
|
Third line (blank line above)
|
|
|
|
Fifth line (blank line above)</pre>
|
|
<p>Each blank line in the source should produce an empty line in the output.</p>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"3. pre with code",
|
|
make_chapter(
|
|
"pre with Nested code Element",
|
|
"""
|
|
<p>Common EPUB pattern: <pre><code>...</code></pre>. Line breaks must still be preserved:</p>
|
|
<pre><code>function greet(name) {
|
|
return "Hello, " + name;
|
|
}
|
|
|
|
greet("World");</code></pre>
|
|
<p>Normal paragraph after pre/code block.</p>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"4. Horizontal Rules",
|
|
make_chapter(
|
|
"Horizontal Rule Tests",
|
|
"""
|
|
<p>A plain <hr> between two paragraphs. A thin line should appear between the two blocks of text.</p>
|
|
<p>Paragraph before the first rule. Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
|
|
<hr/>
|
|
<p>Paragraph after the first rule. The rule above should be a full-width horizontal line.</p>
|
|
<hr/>
|
|
<p>Second rule above. Two rules in a row with no text between them:</p>
|
|
<hr/>
|
|
<hr/>
|
|
<p>Two rules appeared above. Now a rule right after the heading:</p>
|
|
<hr/>
|
|
<p>Rule appeared right after the paragraph above. Finally, a rule near the end of the page to verify it does not cause a spurious page break when there is still room:</p>
|
|
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
|
|
<hr/>
|
|
<p>End of horizontal rule tests.</p>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
(
|
|
"5. Superscript and Subscript",
|
|
make_chapter(
|
|
"Superscript and Subscript",
|
|
"""
|
|
<h2>Basic superscript</h2>
|
|
<p>E = mc<sup>2</sup> is Einstein's mass-energy equivalence.</p>
|
|
<p>The area of a circle is πr<sup>2</sup>.</p>
|
|
<p>2<sup>10</sup> = 1024.</p>
|
|
<p>x<sup>n</sup> + y<sup>n</sup> = z<sup>n</sup></p>
|
|
|
|
<h2>Basic subscript</h2>
|
|
<p>Water is H<sub>2</sub>O.</p>
|
|
<p>Carbon dioxide is CO<sub>2</sub>.</p>
|
|
<p>The sequence a<sub>1</sub>, a<sub>2</sub>, a<sub>3</sub>, ..., a<sub>n</sub>.</p>
|
|
<p>Glucose: C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>.</p>
|
|
|
|
<h2>Mixed sup and sub</h2>
|
|
<p>The pH of water is 7, meaning [H<sub>3</sub>O<sup>+</sup>] = 10<sup>-7</sup> mol/L.</p>
|
|
<p>Footnote reference<sup>1</sup> and another<sup>2</sup> in the same sentence.</p>
|
|
|
|
<h2>Ordinals</h2>
|
|
<p>On the 1<sup>st</sup> of January, the 2<sup>nd</sup> quarter begins on the 3<sup>rd</sup> month.</p>
|
|
|
|
<h2>Nested with bold and italic</h2>
|
|
<p>Speed of light: c = 2.998 × 10<sup>8</sup> m/s.</p>
|
|
<p>Avogadro: 6.022 × 10<sup>23</sup> mol<sup>-1</sup>.</p>
|
|
<p>Bold superscript: x<sup><b>2</b></sup> and italic subscript: H<sub><i>n</i></sub>.</p>
|
|
|
|
<h2>Long runs</h2>
|
|
<p>This word<sup>has a rather long superscript attached to it</sup> continuing normally.</p>
|
|
<p>This word<sub>has a rather long subscript attached to it</sub> continuing normally.</p>
|
|
""",
|
|
),
|
|
[],
|
|
),
|
|
]
|
|
|
|
create_epub(
|
|
OUTPUT_DIR / "test_text_rendering.epub",
|
|
"Text Rendering Tests",
|
|
text_chapters,
|
|
)
|
|
|
|
print(f"\nTest EPUBs created in: {OUTPUT_DIR}")
|
|
print("Files:")
|
|
for f in OUTPUT_DIR.glob("*.epub"):
|
|
print(f" - {f.name}")
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|