feat: 移除图片适配模式功能
移除图片 fit 和 background 参数支持，简化图片渲染逻辑。系统恢复到直接使用 python-pptx 原生图片添加功能，图片将被拉伸到指定尺寸。 变更内容： - 移除 ImageElement 的 fit 和 background 字段 - 移除 metadata.dpi 配置 - 删除 utils/image_utils.py 图片处理工具模块 - 删除 validators/image_config.py 验证器 - 简化 PPTX 和 HTML 渲染器的图片处理逻辑 - HTML 渲染器使用硬编码 DPI=96（Web 标准） - 删除相关测试文件（单元测试、集成测试、e2e 测试） - 更新规格文档和用户文档 - 保留 Pillow 依赖用于未来可能的图片处理需求 影响： - 删除 11 个文件 - 修改 10 个文件 - 净减少 1558 行代码 - 所有 402 个测试通过 Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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"""
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单元测试：图片配置验证器
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测试 validators/image_config.py 中的验证函数。
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"""
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import pytest
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from validators.image_config import (
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validate_fit_value,
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validate_background_color,
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validate_dpi_value,
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)
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class TestValidateFitValue:
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"""测试 fit 值验证"""
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def test_valid_fit_values(self):
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"""测试有效的 fit 值"""
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assert validate_fit_value("stretch") == []
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assert validate_fit_value("contain") == []
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assert validate_fit_value("cover") == []
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assert validate_fit_value("center") == []
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def test_none_fit_value(self):
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"""测试 None 值（默认）"""
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# None 是无效的，应该返回错误
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issues = validate_fit_value(None)
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assert len(issues) > 0
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def test_invalid_fit_value(self):
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"""测试无效的 fit 值"""
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issues = validate_fit_value("invalid")
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assert len(issues) > 0
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assert issues[0].level == "ERROR"
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issues = validate_fit_value("fill")
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assert len(issues) > 0
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issues = validate_fit_value("scale")
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assert len(issues) > 0
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def test_case_sensitive(self):
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"""测试大小写敏感"""
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issues = validate_fit_value("STRETCH")
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assert len(issues) > 0
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issues = validate_fit_value("Contain")
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assert len(issues) > 0
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class TestValidateBackgroundColor:
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"""测试背景色验证"""
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def test_valid_hex_colors(self):
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"""测试有效的十六进制颜色"""
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assert validate_background_color("#ffffff") == []
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assert validate_background_color("#000000") == []
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assert validate_background_color("#ff0000") == []
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assert validate_background_color("#4a90e2") == []
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def test_valid_short_hex_colors(self):
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"""测试有效的短格式十六进制颜色"""
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assert validate_background_color("#fff") == []
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assert validate_background_color("#000") == []
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assert validate_background_color("#f00") == []
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def test_none_background(self):
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"""测试 None 值（透明）"""
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# None 会导致 TypeError，应该返回错误
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issues = validate_background_color(None)
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assert len(issues) > 0
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def test_invalid_colors(self):
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"""测试无效的颜色格式"""
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issues = validate_background_color("white")
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assert len(issues) > 0
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issues = validate_background_color("rgb(255,255,255)")
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assert len(issues) > 0
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issues = validate_background_color("#gggggg")
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assert len(issues) > 0
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issues = validate_background_color("#ff")
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assert len(issues) > 0
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issues = validate_background_color("ffffff")
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assert len(issues) > 0
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class TestValidateDpiValue:
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"""测试 DPI 值验证"""
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def test_valid_dpi_values(self):
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"""测试有效的 DPI 值"""
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assert validate_dpi_value(72) == []
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assert validate_dpi_value(96) == []
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assert validate_dpi_value(150) == []
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assert validate_dpi_value(300) == []
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def test_boundary_dpi_values(self):
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"""测试边界 DPI 值"""
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# 1 和 1200 超出建议范围，会返回 WARNING
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issues = validate_dpi_value(1)
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assert len(issues) > 0
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assert issues[0].level == "WARNING"
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issues = validate_dpi_value(1200)
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assert len(issues) > 0
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assert issues[0].level == "WARNING"
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def test_invalid_dpi_values(self):
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"""测试无效的 DPI 值"""
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# 0 和负数会返回 WARNING
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issues = validate_dpi_value(0)
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assert len(issues) > 0
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issues = validate_dpi_value(-1)
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assert len(issues) > 0
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issues = validate_dpi_value(1201)
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assert len(issues) > 0
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issues = validate_dpi_value(2000)
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assert len(issues) > 0
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def test_non_integer_dpi(self):
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"""测试非整数 DPI 值"""
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# 浮点数 DPI 可能被接受（取决于实现）
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# 字符串和 None 应该返回错误
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issues = validate_dpi_value("96")
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assert len(issues) > 0
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issues = validate_dpi_value(None)
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assert len(issues) > 0
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