feat: render font data uri into svg through jinja

Author: foosel

README.md

@@ -30,3 +30,6 @@ The plugin does not have any configuration options.
 
 The snowfall is implemented with a slightly customized version of [pure-snow.js](https://github.com/hyperstown/pure-snow.js),
 released under the MIT license and bundled here under `octoprint_wrapped/static/pure-snow`.
+
+The font used for the stats in the generated wrapped picture is [Open Sans](https://fonts.google.com/specimen/Open+Sans),
+released under the SIL Open Font License and bundled here under `octoprint_wrapped/static/fonts`.

octoprint_wrapped/__init__.py

@@ -22,6 +22,9 @@
 SECONDS_DAY = SECONDS_HOUR * 24
 
 
+FONT_FILE_OPEN_SANS_BOLD = "open-sans-v15-latin-700.woff"
+
+
 class YearStats(BaseModel):
     year: int
     prints_completed: int
@@ -42,6 +45,13 @@ class WrappedPlugin(
     octoprint.plugin.SimpleApiPlugin,
     octoprint.plugin.TemplatePlugin,
 ):
+    def __init__(self):
+        super().__init__()
+        self.font_open_sans_bold: str = None
+
+    def initialize(self):
+        self._load_font()
+
     ##~~ AssetPlugin mixin
 
     def get_assets(self):
@@ -71,7 +81,11 @@ def get_svg(self, year):
             flask.abort(404)
 
         response = flask.make_response(
-            flask.render_template("wrapped.svg.jinja2", **stats.model_dump(by_alias=True))
+            flask.render_template(
+                "wrapped.svg.jinja2",
+                font_open_sans_bold=self.font_open_sans_bold,
+                **stats.model_dump(by_alias=True),
+            )
         )
         response.headers["Content-Type"] = "image/svg+xml"
         return response
@@ -242,6 +256,22 @@ def _to_duration_hours(self, seconds: int) -> str:
 
         return f"{hours}h {minutes}m"
 
+    def _load_font(self) -> None:
+        from base64 import b64encode
+
+        font_path = os.path.join(
+            os.path.dirname(__file__), "static", "fonts", FONT_FILE_OPEN_SANS_BOLD
+        )
+
+        try:
+            with open(font_path, "rb") as f:
+                data = f.read()
+
+            encoded = b64encode(data).decode().strip()
+            self.font_open_sans_bold = f"data:font/woff;base64,{encoded}"
+        except Exception:
+            self._logger.exception("Error creating data URI for embedded font")
+
 
 __plugin_name__ = "OctoPrint Wrapped!"
 __plugin_pythoncompat__ = ">=3.9,<4"  # Only Python 3

octoprint_wrapped/static/fonts/LICENSE

@@ -0,0 +1,92 @@
+Copyright 2020 The Open Sans Project Authors (https://github.com/googlefonts/opensans)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+https://openfontlicense.org
+
+---
+
+## SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1. Neither the Font Software nor any of its individual components,
+   in Original or Modified Versions, may be sold by itself.
+
+2. Original or Modified Versions of the Font Software may be bundled,
+   redistributed and/or sold with any software, provided that each copy
+   contains the above copyright notice and this license. These can be
+   included either as stand-alone text files, human-readable headers or
+   in the appropriate machine-readable metadata fields within text or
+   binary files as long as those fields can be easily viewed by the user.
+
+3. No Modified Version of the Font Software may use the Reserved Font
+   Name(s) unless explicit written permission is granted by the corresponding
+   Copyright Holder. This restriction only applies to the primary font name as
+   presented to the users.
+
+4. The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+   Software shall not be used to promote, endorse or advertise any
+   Modified Version, except to acknowledge the contribution(s) of the
+   Copyright Holder(s) and the Author(s) or with their explicit written
+   permission.
+
+5. The Font Software, modified or unmodified, in part or in whole,
+   must be distributed entirely under this license, and must not be
+   distributed under any other license. The requirement for fonts to
+   remain under this license does not apply to any document created
+   using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.