Cut release 0.11.0

Show battery percentage on home screen (#167 )
## Summary * Show battery percentage on home screen * Moved battery rendering logic into shared ScreenComponents class * As discussed https://github.com/daveallie/crosspoint-reader/discussions/155
2025-12-30 23:42:19 +11:00 · 2025-12-30 23:41:47 +11:00 · 2025-12-30 23:19:08 +11:00 · 2025-12-30 23:18:10 +11:00 · 2025-12-30 23:02:46 +11:00 · 2025-12-30 22:15:44 +11:00
181 changed files with 217990 additions and 22137 deletions
@@ -12,12 +12,6 @@ jobs:
      - uses: actions/checkout@v6
        with:
          submodules: recursive
-      - uses: actions/cache@v5
-        with:
-          path: |
-            ~/.cache/pip
-            ~/.platformio/.cache
-          key: ${{ runner.os }}-pio
      - uses: actions/setup-python@v6
        with:
          python-version: '3.14'
@@ -98,9 +98,9 @@ CrossPoint Reader is pretty aggressive about caching data down to the SD card to
 has ~380KB of usable RAM, so we have to be careful. A lot of the decisions made in the design of the firmware were based
 on this constraint.

-### EPUB caching
+### Data caching

-The first time chapters of an EPUB are loaded, they are cached to the SD card. Subsequent loads are served from the 
+The first time chapters of a book are loaded, they are cached to the SD card. Subsequent loads are served from the 
 cache. This cache directory exists at `.crosspoint` on the SD card. The structure is as follows:


@@ -108,25 +108,22 @@ cache. This cache directory exists at `.crosspoint` on the SD card. The structur
 .crosspoint/
 ├── epub_12471232/       # Each EPUB is cached to a subdirectory named `epub_<hash>`
 │   ├── progress.bin     # Stores reading progress (chapter, page, etc.)
-│   ├── 0/               # Each chapter is stored in a subdirectory named by its index (based on the spine order)
-│   │   ├── section.bin  # Section metadata (page count)
-│   │   ├── page_0.bin   # Each page is stored in a separate file, it
-│   │   ├── page_1.bin   #   contains the position (x, y) and text for each word
-│   │   └── ...
-│   ├── 1/
-│   │   ├── section.bin
-│   │   ├── page_0.bin
-│   │   ├── page_1.bin
-│   │   └── ...
-│   └── ...
+│   ├── cover.bmp        # Book cover image (once generated)
+│   ├── book.bin         # Book metadata (title, author, spine, table of contents, etc.)
+│   └── sections/        # All chapter data is stored in the sections subdirectory
+│       ├── 0.bin        # Chapter data (screen count, all text layout info, etc.)
+│       ├── 1.bin        #     files are named by their index in the spine
+│       └── ...
 │
 └── epub_189013891/
 ```

-Deleting the `.crosspoint` directory will clear the cache. 
+Deleting the `.crosspoint` directory will clear the entire cache. 

-Due the way it's currently implemented, the cache is not automatically cleared when the EPUB is deleted and moving an 
-EPUB file will reset the reading progress.
+Due the way it's currently implemented, the cache is not automatically cleared when a book is deleted and moving a book
+file will use a new cache directory, resetting the reading progress.
+
+For more details on the internal file structures, see the [file formats document](./docs/file-formats.md).

 ## Contributing

@@ -67,6 +67,7 @@ The Settings screen allows you to configure the device's behavior. There are a f
 - **Extra Paragraph Spacing**: If enabled, vertical space will be added between paragraphs in the book, if disabled,
  paragraphs will not have vertical space between them, but will have first word indentation.
 - **Short Power Button Click**: Whether to trigger the power button on a short press or a long press.
+- **Front Button Layout**: Swap the order of the bottom edge buttons from Back/Confirm/Left/Right to Left/Right/Back/Confirm.

 ### 3.6 Sleep Screen

@@ -1,3 +1,19 @@
 #!/bin/bash

-find src lib \( -name "*.c" -o -name "*.cpp" -o -name "*.h" -o -name "*.hpp" \) -exec clang-format -style=file -i {} +
+GIT_LS_FILES_FLAGS=""
+if [[ "$1" == "-g" ]]; then
+  GIT_LS_FILES_FLAGS="--modified"
+fi
+
+# --- Main Logic ---
+
+# Format all files (or only modified files if -g is passed)
+
+# Use 'git ls-files' to get a list of all files tracked by git:
+# --modified: files tracked by git that have been modified (staged or unstaged)
+# --exclude-standard: ignores files in .gitignore
+# Additionally exclude files in 'lib/EpdFont/builtinFonts/' as they are script-generated.
+git ls-files  --exclude-standard ${GIT_LS_FILES_FLAGS} \
+    | grep -E '\.(c|cpp|h|hpp)$' \
+    | grep -v -E '^lib/EpdFont/builtinFonts/' \
+    | xargs -r clang-format -style=file -i
@@ -0,0 +1,9 @@
+# File Formats
+
+## `book.bin`
+
+![](./images/file-formats/book-bin.png)
+
+## `section.bin`
+
+![](./images/file-formats/section-bin.png)
@@ -2,8 +2,7 @@

 #include <Utf8.h>

-inline int min(const int a, const int b) { return a < b ? a : b; }
-inline int max(const int a, const int b) { return a < b ? b : a; }
+#include <algorithm>

 void EpdFont::getTextBounds(const char* string, const int startX, const int startY, int* minX, int* minY, int* maxX,
                            int* maxY) const {
@@ -32,10 +31,10 @@ void EpdFont::getTextBounds(const char* string, const int startX, const int star
      continue;
    }

-    *minX = min(*minX, cursorX + glyph->left);
-    *maxX = max(*maxX, cursorX + glyph->left + glyph->width);
-    *minY = min(*minY, cursorY + glyph->top - glyph->height);
-    *maxY = max(*maxY, cursorY + glyph->top);
+    *minX = std::min(*minX, cursorX + glyph->left);
+    *maxX = std::max(*maxX, cursorX + glyph->left + glyph->width);
+    *minY = std::min(*minY, cursorY + glyph->top - glyph->height);
+    *maxY = std::max(*maxY, cursorY + glyph->top);
    cursorX += glyph->advanceX;
  }
 }
@@ -59,14 +58,28 @@ bool EpdFont::hasPrintableChars(const char* string) const {

 const EpdGlyph* EpdFont::getGlyph(const uint32_t cp) const {
  const EpdUnicodeInterval* intervals = data->intervals;
-  for (int i = 0; i < data->intervalCount; i++) {
-    const EpdUnicodeInterval* interval = &intervals[i];
-    if (cp >= interval->first && cp <= interval->last) {
+  const int count = data->intervalCount;
+
+  if (count == 0) return nullptr;
+
+  // Binary search for O(log n) lookup instead of O(n)
+  // Critical for Korean fonts with many unicode intervals
+  int left = 0;
+  int right = count - 1;
+
+  while (left <= right) {
+    const int mid = left + (right - left) / 2;
+    const EpdUnicodeInterval* interval = &intervals[mid];
+
+    if (cp < interval->first) {
+      right = mid - 1;
+    } else if (cp > interval->last) {
+      left = mid + 1;
+    } else {
+      // Found: cp >= interval->first && cp <= interval->last
      return &data->glyph[interval->offset + (cp - interval->first)];
    }
-    if (cp < interval->first) {
-      return nullptr;
-    }
  }
+
  return nullptr;
 }
@@ -0,0 +1,55 @@
+#pragma once
+
+#include <builtinFonts/aleo_12_bold.h>
+#include <builtinFonts/aleo_12_bolditalic.h>
+#include <builtinFonts/aleo_12_italic.h>
+#include <builtinFonts/aleo_12_regular.h>
+#include <builtinFonts/aleo_14_bold.h>
+#include <builtinFonts/aleo_14_bolditalic.h>
+#include <builtinFonts/aleo_14_italic.h>
+#include <builtinFonts/aleo_14_regular.h>
+#include <builtinFonts/aleo_16_bold.h>
+#include <builtinFonts/aleo_16_bolditalic.h>
+#include <builtinFonts/aleo_16_italic.h>
+#include <builtinFonts/aleo_16_regular.h>
+#include <builtinFonts/aleo_18_bold.h>
+#include <builtinFonts/aleo_18_bolditalic.h>
+#include <builtinFonts/aleo_18_italic.h>
+#include <builtinFonts/aleo_18_regular.h>
+#include <builtinFonts/notosans_12_bold.h>
+#include <builtinFonts/notosans_12_bolditalic.h>
+#include <builtinFonts/notosans_12_italic.h>
+#include <builtinFonts/notosans_12_regular.h>
+#include <builtinFonts/notosans_14_bold.h>
+#include <builtinFonts/notosans_14_bolditalic.h>
+#include <builtinFonts/notosans_14_italic.h>
+#include <builtinFonts/notosans_14_regular.h>
+#include <builtinFonts/notosans_16_bold.h>
+#include <builtinFonts/notosans_16_bolditalic.h>
+#include <builtinFonts/notosans_16_italic.h>
+#include <builtinFonts/notosans_16_regular.h>
+#include <builtinFonts/notosans_18_bold.h>
+#include <builtinFonts/notosans_18_bolditalic.h>
+#include <builtinFonts/notosans_18_italic.h>
+#include <builtinFonts/notosans_18_regular.h>
+#include <builtinFonts/opendyslexic_10_bold.h>
+#include <builtinFonts/opendyslexic_10_bolditalic.h>
+#include <builtinFonts/opendyslexic_10_italic.h>
+#include <builtinFonts/opendyslexic_10_regular.h>
+#include <builtinFonts/opendyslexic_12_bold.h>
+#include <builtinFonts/opendyslexic_12_bolditalic.h>
+#include <builtinFonts/opendyslexic_12_italic.h>
+#include <builtinFonts/opendyslexic_12_regular.h>
+#include <builtinFonts/opendyslexic_14_bold.h>
+#include <builtinFonts/opendyslexic_14_bolditalic.h>
+#include <builtinFonts/opendyslexic_14_italic.h>
+#include <builtinFonts/opendyslexic_14_regular.h>
+#include <builtinFonts/opendyslexic_8_bold.h>
+#include <builtinFonts/opendyslexic_8_bolditalic.h>
+#include <builtinFonts/opendyslexic_8_italic.h>
+#include <builtinFonts/opendyslexic_8_regular.h>
+#include <builtinFonts/spacegrotesk.h>
+#include <builtinFonts/ubuntu_10_bold.h>
+#include <builtinFonts/ubuntu_10_regular.h>
+#include <builtinFonts/ubuntu_12_bold.h>
+#include <builtinFonts/ubuntu_12_regular.h>
@@ -0,0 +1,93 @@
+Copyright 2018 The Aleo Project Authors (https://github.com/AlessioLaiso/aleo)
+
+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.
@@ -0,0 +1,93 @@
+Copyright 2022 The Noto Project Authors (https://github.com/notofonts/latin-greek-cyrillic)
+
+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.
@@ -0,0 +1,94 @@
+Copyright (c) 2019-07-29, Abbie Gonzalez (https://abbiecod.es|support@abbiecod.es),
+with Reserved Font Name OpenDyslexic.
+Copyright (c) 12/2012 - 2019
+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:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+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.
@@ -0,0 +1,93 @@
+Copyright 2020 The Space Grotesk Project Authors (https://github.com/floriankarsten/space-grotesk)
+
+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.
@@ -0,0 +1,96 @@
+-------------------------------
+UBUNTU FONT LICENCE Version 1.0
+-------------------------------
+
+PREAMBLE
+This licence allows the licensed fonts to be used, studied, modified and
+redistributed freely. The fonts, including any derivative works, can be
+bundled, embedded, and redistributed provided the terms of this licence
+are met. The fonts and derivatives, however, cannot be released under
+any other licence. The requirement for fonts to remain under this
+licence does not require any document created using the fonts or their
+derivatives to be published under this licence, as long as the primary
+purpose of the document is not to be a vehicle for the distribution of
+the fonts.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this licence and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Original Version" refers to the collection of Font Software components
+as received under this licence.
+
+"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.
+
+"Copyright Holder(s)" refers to all individuals and companies who have a
+copyright ownership of the Font Software.
+
+"Substantially Changed" refers to Modified Versions which can be easily
+identified as dissimilar to the Font Software by users of the Font
+Software comparing the Original Version with the Modified Version.
+
+To "Propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification and with or without charging
+a redistribution fee), making available to the public, and in some
+countries other activities as well.
+
+PERMISSION & CONDITIONS
+This licence does not grant any rights under trademark law and all such
+rights are reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of the Font Software, to propagate the Font Software, subject to
+the below conditions:
+
+1) Each copy of the Font Software must contain the above copyright
+notice and this licence. 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.
+
+2) The font name complies with the following:
+(a) The Original Version must retain its name, unmodified.
+(b) Modified Versions which are Substantially Changed must be renamed to
+avoid use of the name of the Original Version or similar names entirely.
+(c) Modified Versions which are not Substantially Changed must be
+renamed to both (i) retain the name of the Original Version and (ii) add
+additional naming elements to distinguish the Modified Version from the
+Original Version. The name of such Modified Versions must be the name of
+the Original Version, with "derivative X" where X represents the name of
+the new work, appended to that name.
+
+3) The name(s) of the Copyright Holder(s) and any contributor to the
+Font Software shall not be used to promote, endorse or advertise any
+Modified Version, except (i) as required by this licence, (ii) to
+acknowledge the contribution(s) of the Copyright Holder(s) or (iii) with
+their explicit written permission.
+
+4) The Font Software, modified or unmodified, in part or in whole, must
+be distributed entirely under this licence, and must not be distributed
+under any other licence. The requirement for fonts to remain under this
+licence does not affect any document created using the Font Software,
+except any version of the Font Software extracted from a document
+created using the Font Software may only be distributed under this
+licence.
+
+TERMINATION
+This licence 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.
@@ -0,0 +1,826 @@
+/**
+ * generated by fontconvert.py
+ * name: spacegrotesk
+ * size: 8
+ * mode: 1-bit
+ */
+#pragma once
+#include "EpdFontData.h"
+
+static const uint8_t spacegroteskBitmaps[5331] = {
+    0x66, 0x66, 0x66, 0x66, 0x60, 0x67, 0x20, 0x00, 0xF9, 0xF1, 0xA6, 0xC0, 0x00, 0x33, 0x0C, 0xC3,
+    0x31, 0xFF, 0xFF, 0xCC, 0xC3, 0x33, 0xFF, 0xFF, 0xCC, 0xC3, 0x30, 0xCC, 0x0C, 0x03, 0x03, 0xF1,
+    0xFE, 0x6D, 0x9B, 0x77, 0xC8, 0xF8, 0x1F, 0x93, 0x7E, 0xCD, 0xB3, 0x7F, 0x8F, 0xE0, 0xC0, 0x30,
+    0x78, 0x37, 0xE3, 0x33, 0x39, 0x9B, 0x87, 0xD8, 0x1D, 0x80, 0x19, 0x01, 0xFE, 0x1D, 0xB8, 0xCC,
+    0xCC, 0x66, 0xC3, 0xE0, 0x04, 0x00, 0x3E, 0x1F, 0x86, 0x03, 0x84, 0x63, 0x1F, 0xF7, 0xFD, 0x8C,
+    0xC3, 0x38, 0xC7, 0xF0, 0xFC, 0x06, 0x73, 0x60, 0x19, 0xEE, 0x30, 0xC3, 0x0C, 0x30, 0xC3, 0x0C,
+    0x30, 0xC3, 0x0E, 0x1E, 0x3C, 0xC3, 0xC3, 0x86, 0x1C, 0x30, 0xC3, 0x0C, 0x30, 0xC3, 0x0C, 0x61,
+    0xBC, 0xE0, 0x08, 0x6A, 0x3E, 0xFF, 0x7F, 0x3E, 0x6A, 0x08, 0x18, 0x18, 0x18, 0xFF, 0xFF, 0x18,
+    0x18, 0x18, 0x06, 0x73, 0x60, 0xFF, 0xE0, 0x06, 0x72, 0x0C, 0x18, 0x30, 0xE1, 0x83, 0x06, 0x18,
+    0x30, 0x61, 0x83, 0x06, 0x18, 0x30, 0x40, 0x3E, 0x3F, 0xB0, 0xF8, 0x3C, 0x1E, 0x0F, 0x07, 0x83,
+    0xC1, 0xE0, 0xF9, 0xCF, 0xE1, 0x80, 0x1C, 0xF7, 0xDB, 0xEF, 0x30, 0xC3, 0x0C, 0x30, 0xC3, 0x3F,
+    0x1F, 0xE6, 0x19, 0x87, 0x41, 0xC0, 0x60, 0xF8, 0xF8, 0x70, 0x18, 0x07, 0xF9, 0xFF, 0x7F, 0x9F,
+    0xF0, 0x38, 0x3C, 0x1C, 0x07, 0xC1, 0xF8, 0x06, 0xC1, 0xD8, 0x67, 0x38, 0xFC, 0x0C, 0x00, 0x07,
+    0x03, 0xC0, 0xF0, 0x6C, 0x3B, 0x0C, 0xC6, 0x33, 0x8C, 0xFF, 0xFF, 0xF0, 0x30, 0x0C, 0x7F, 0x9F,
+    0xE6, 0x01, 0x80, 0x7F, 0x1F, 0xE7, 0x18, 0x07, 0x61, 0xD8, 0x67, 0x38, 0xFC, 0x0C, 0x00, 0x7E,
+    0x7F, 0xB0, 0xD8, 0x3F, 0xE7, 0xFB, 0x0D, 0x83, 0xC1, 0xE1, 0xF9, 0xCF, 0xC1, 0x80, 0xFF, 0xFF,
+    0xC0, 0x60, 0x60, 0x30, 0x30, 0x38, 0x18, 0x1C, 0x0C, 0x0E, 0x06, 0x00, 0x3F, 0x1F, 0xE6, 0x1D,
+    0x83, 0x61, 0xCF, 0xE7, 0xF9, 0x87, 0xE0, 0xF8, 0x37, 0x3C, 0xFE, 0x0C, 0x00, 0x3F, 0x1F, 0xE6,
+    0x19, 0x87, 0xE1, 0xD8, 0x77, 0xFC, 0xFF, 0x41, 0xD8, 0x67, 0x38, 0xFC, 0x0C, 0x00, 0x06, 0x72,
+    0x00, 0x06, 0x72, 0x06, 0x72, 0x00, 0x06, 0x73, 0x60, 0x01, 0x0F, 0x3E, 0xF0, 0xF0, 0x7C, 0x1F,
+    0x03, 0xFF, 0xFF, 0x7F, 0xFF, 0x00, 0xC0, 0xF0, 0x7E, 0x0F, 0x07, 0x3E, 0xF8, 0xC0, 0x3F, 0x3F,
+    0xD8, 0x78, 0x34, 0x18, 0x3C, 0x3C, 0x18, 0x0C, 0x00, 0x07, 0x03, 0x80, 0x80, 0x0F, 0xE0, 0x3F,
+    0xF0, 0xE0, 0x73, 0x18, 0x6E, 0x7F, 0x79, 0xDE, 0xF3, 0x1D, 0xEE, 0x1B, 0xDC, 0x37, 0x98, 0xEF,
+    0x3B, 0xFB, 0x3F, 0xE7, 0x10, 0x07, 0x80, 0x07, 0xFC, 0x01, 0xF0, 0x0E, 0x03, 0xC0, 0x7C, 0x0D,
+    0x83, 0xB0, 0x66, 0x0C, 0x63, 0xFC, 0x7F, 0x8C, 0x39, 0x83, 0x60, 0x60, 0xFF, 0x9F, 0xF8, 0xC3,
+    0x18, 0x63, 0x0C, 0x7F, 0x8F, 0xE1, 0x86, 0x30, 0xC6, 0x19, 0xFF, 0x7F, 0xC0, 0x3E, 0x3F, 0xB8,
+    0x78, 0x3C, 0x1E, 0x03, 0x01, 0x83, 0xC1, 0xE0, 0xFD, 0xEF, 0xE1, 0xC0, 0xFF, 0x1F, 0xF0, 0xC7,
+    0x18, 0x63, 0x0E, 0x61, 0xCC, 0x39, 0x87, 0x30, 0xC6, 0x19, 0xFF, 0x7F, 0xC0, 0xFF, 0xFF, 0xC0,
+    0xC0, 0xC0, 0xFE, 0xFE, 0xC0, 0xC0, 0xC0, 0xFF, 0xFF, 0xFF, 0xFF, 0xC0, 0xC0, 0xC0, 0xFE, 0xFE,
+    0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0x3E, 0x3F, 0xB8, 0x78, 0x3C, 0x1E, 0x03, 0x3F, 0x9F, 0xC1, 0xE0,
+    0xFD, 0xEF, 0xF1, 0x80, 0xC1, 0xE0, 0xF0, 0x78, 0x3C, 0x1F, 0xFF, 0xFF, 0x83, 0xC1, 0xE0, 0xF0,
+    0x78, 0x30, 0xFF, 0xFF, 0xFF, 0x0F, 0x83, 0xE0, 0x30, 0x0C, 0x03, 0x00, 0xC0, 0x33, 0x0C, 0xC3,
+    0x38, 0xC7, 0x71, 0xF8, 0x18, 0x00, 0xC3, 0xE3, 0xB3, 0x9B, 0x8F, 0x87, 0x83, 0xC1, 0xF0, 0xDC,
+    0x67, 0x31, 0xD8, 0x70, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xC0, 0xFF, 0xFF,
+    0xE0, 0x77, 0x83, 0xBC, 0x3D, 0xE1, 0xEF, 0x8F, 0x6C, 0x7B, 0x66, 0xDB, 0x36, 0xCD, 0xB6, 0x7D,
+    0xB3, 0xCD, 0x9E, 0x60, 0xE1, 0xF8, 0xFC, 0x7F, 0x3D, 0x9E, 0xCF, 0x37, 0x9B, 0xCF, 0xE3, 0xF1,
+    0xF8, 0xF0, 0x3E, 0x1F, 0xEE, 0x1B, 0x06, 0xC1, 0xF0, 0x7C, 0x1F, 0x07, 0xC1, 0xB0, 0x6F, 0x79,
+    0xFC, 0x1C, 0x00, 0xFE, 0x7F, 0xB0, 0xF8, 0x3C, 0x1E, 0x1B, 0xFD, 0xF8, 0xC0, 0x60, 0x30, 0x18,
+    0x00, 0x3E, 0x1F, 0xEE, 0x1B, 0x06, 0xC1, 0xF0, 0x7C, 0x1F, 0x07, 0xC1, 0xB0, 0x6F, 0x79, 0xFC,
+    0x1C, 0x03, 0x80, 0xE0, 0xFE, 0x7F, 0xB0, 0x78, 0x3C, 0x1E, 0x1F, 0xFD, 0xFF, 0xC3, 0xE1, 0xF0,
+    0xF8, 0x70, 0x3F, 0x1F, 0xE6, 0x19, 0x87, 0x70, 0x8F, 0x81, 0xF9, 0x07, 0xE0, 0xD8, 0x37, 0x38,
+    0xFE, 0x0C, 0x00, 0xFF, 0xFF, 0xF0, 0xC0, 0x30, 0x0C, 0x03, 0x00, 0xC0, 0x30, 0x0C, 0x03, 0x00,
+    0xC0, 0x30, 0xC1, 0xE0, 0xF0, 0x78, 0x3C, 0x1E, 0x0F, 0x07, 0x83, 0xC1, 0xE0, 0xFD, 0xEF, 0xE1,
+    0xC0, 0xC0, 0xF8, 0x36, 0x1D, 0x86, 0x61, 0x8C, 0x63, 0x30, 0xCC, 0x1B, 0x07, 0xC1, 0xE0, 0x78,
+    0xC3, 0x8F, 0x9E, 0x36, 0x78, 0xD9, 0xB3, 0x66, 0xCD, 0x9B, 0x76, 0xED, 0x9B, 0x36, 0x3C, 0xF8,
+    0xF1, 0xE3, 0xC7, 0x8F, 0x1E, 0xE0, 0xCC, 0x38, 0xC6, 0x1D, 0x81, 0xF0, 0x3C, 0x03, 0x80, 0xF8,
+    0x3B, 0x06, 0x31, 0xC7, 0x70, 0x60, 0xC0, 0xF8, 0x76, 0x18, 0xCE, 0x3B, 0x07, 0x81, 0xE0, 0x30,
+    0x0C, 0x03, 0x00, 0xC0, 0x30, 0x7F, 0xBF, 0xC0, 0xE0, 0x60, 0x60, 0x70, 0x70, 0x70, 0x30, 0x30,
+    0x3F, 0xFF, 0xF0, 0x77, 0xF1, 0x8C, 0x63, 0x18, 0xC6, 0x31, 0x8C, 0x63, 0x1E, 0xF8, 0x60, 0x60,
+    0x60, 0x30, 0x30, 0x30, 0x18, 0x18, 0x18, 0x0C, 0x0C, 0x0C, 0x06, 0x06, 0x06, 0x02, 0xF7, 0xC6,
+    0x31, 0x8C, 0x63, 0x18, 0xC6, 0x31, 0x8C, 0x7F, 0xF0, 0x1C, 0x1E, 0x1D, 0x8C, 0xEC, 0x30, 0xFF,
+    0x7F, 0x80, 0x00, 0x67, 0x30, 0x1C, 0x0F, 0xC6, 0x31, 0x8C, 0x3F, 0x1F, 0xCE, 0x31, 0x9E, 0x7F,
+    0xC6, 0x00, 0xC0, 0x60, 0x30, 0x1B, 0x8F, 0xF7, 0x1F, 0x07, 0x83, 0xC1, 0xE0, 0xFC, 0xFF, 0xE0,
+    0xC0, 0x0E, 0x0F, 0xC7, 0x39, 0x86, 0x60, 0x18, 0x06, 0x19, 0xCE, 0x3F, 0x03, 0x00, 0x00, 0xC0,
+    0x30, 0x0C, 0x73, 0x3F, 0xDC, 0x76, 0x1D, 0x83, 0x60, 0xD8, 0x77, 0x3C, 0xFF, 0x0C, 0x00, 0x0E,
+    0x1F, 0x9C, 0xEC, 0x37, 0xFB, 0xFD, 0x86, 0xE7, 0x3F, 0x06, 0x00, 0x1E, 0x3C, 0x63, 0xFF, 0xE3,
+    0x06, 0x0C, 0x18, 0x30, 0x60, 0xC0, 0x1C, 0x8F, 0xF7, 0x1D, 0x87, 0x60, 0xD8, 0x36, 0x1D, 0xEF,
+    0x3F, 0xC0, 0x30, 0x0C, 0xFF, 0x3F, 0x80, 0xC0, 0xC0, 0xC0, 0xDC, 0xFE, 0xE3, 0xC3, 0xC3, 0xC3,
+    0xC3, 0xC3, 0xC3, 0xDB, 0x0D, 0xB6, 0xDB, 0x60, 0x31, 0x8C, 0x03, 0x18, 0xC6, 0x31, 0x8C, 0x63,
+    0x1B, 0xCC, 0xC0, 0xC0, 0xC0, 0xC2, 0xCE, 0xDC, 0xF8, 0xF0, 0xF0, 0xD8, 0xCE, 0xC7, 0xFF, 0xFF,
+    0xFF, 0x18, 0xC7, 0xFF, 0xB9, 0xCD, 0x8C, 0x6C, 0x63, 0x63, 0x1B, 0x18, 0xD8, 0xC6, 0xC6, 0x30,
+    0x1C, 0xFE, 0xE3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0x0E, 0x0F, 0xC7, 0x39, 0x87, 0x60, 0xD8,
+    0x36, 0x19, 0xCE, 0x3F, 0x03, 0x00, 0x1C, 0x7F, 0xB8, 0xF8, 0x3C, 0x1E, 0x0F, 0x07, 0xE7, 0xFF,
+    0x66, 0x30, 0x18, 0x0C, 0x00, 0x1C, 0x8F, 0xF7, 0x1D, 0x87, 0x60, 0xD8, 0x36, 0x1D, 0xCF, 0x3F,
+    0xC3, 0x30, 0x0C, 0x03, 0x00, 0x80, 0x1F, 0xF9, 0x8C, 0x63, 0x18, 0xC0, 0x1C, 0x7E, 0x63, 0x62,
+    0x7E, 0x1F, 0x63, 0x63, 0x3F, 0x0C, 0x00, 0x30, 0x63, 0xFF, 0xE3, 0x06, 0x0C, 0x18, 0x30, 0x70,
+    0xF0, 0x01, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xE7, 0x7F, 0x10, 0x41, 0x71, 0xD8, 0xCC, 0x67,
+    0x71, 0xB0, 0xD8, 0x38, 0x1C, 0x00, 0x42, 0x13, 0x38, 0xD9, 0xEE, 0xCF, 0x66, 0xDB, 0x36, 0xD8,
+    0xF3, 0xC7, 0x9E, 0x38, 0xE0, 0x40, 0x98, 0x63, 0x30, 0xF8, 0x1E, 0x07, 0x83, 0xF1, 0xCC, 0x61,
+    0x80, 0x01, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xC3, 0xE7, 0x7F, 0x13, 0x03, 0x7F, 0x7E, 0xFD, 0xFC,
+    0x38, 0xE3, 0x8E, 0x38, 0x7E, 0xFE, 0x1E, 0x3C, 0x60, 0xC1, 0x83, 0x06, 0x0C, 0xF1, 0xE0, 0x60,
+    0xC1, 0x83, 0x06, 0x0F, 0x1E, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xF1, 0xF0, 0x60, 0xC1, 0x83, 0x06,
+    0x0C, 0x1E, 0x3C, 0x60, 0xC1, 0x83, 0x06, 0x7C, 0xF0, 0x10, 0x7B, 0xFF, 0x4C, 0x67, 0x60, 0x66,
+    0x66, 0x66, 0x66, 0x60, 0x08, 0x0C, 0x07, 0x0F, 0xCF, 0xF6, 0xDB, 0x61, 0xB0, 0xDB, 0x7F, 0x9F,
+    0x83, 0x01, 0x80, 0x1F, 0x0F, 0xE3, 0x1C, 0xC3, 0x30, 0xDF, 0x07, 0xC0, 0xC0, 0x30, 0x0C, 0x07,
+    0xF9, 0xFF, 0x00, 0x1F, 0xF7, 0xF9, 0x86, 0x60, 0xD8, 0x36, 0x19, 0xCE, 0x7F, 0xD3, 0x20, 0xC0,
+    0xCC, 0x39, 0xC6, 0x19, 0xC3, 0xB0, 0x3C, 0x1F, 0xE1, 0xFC, 0x7F, 0x87, 0xF0, 0x30, 0x06, 0x00,
+    0xFF, 0xFF, 0x0F, 0xFF, 0xF0, 0x3E, 0x7E, 0x63, 0x62, 0x7C, 0x7E, 0x7B, 0x3F, 0x47, 0xC3, 0x67,
+    0x7E, 0x18, 0x6C, 0xD9, 0xB0, 0x3F, 0x1F, 0xEC, 0xDF, 0x7B, 0xF3, 0xFC, 0xBF, 0x0F, 0xCF, 0xFE,
+    0xF7, 0xB6, 0x39, 0xFC, 0x0C, 0x00, 0x78, 0xD8, 0xF3, 0xEC, 0xCF, 0xCC, 0x00, 0x0C, 0x63, 0xBD,
+    0xEE, 0x73, 0x87, 0x70, 0x77, 0x87, 0x38, 0x23, 0xFF, 0xFF, 0x03, 0x03, 0xFF, 0xE0, 0x3E, 0x7F,
+    0x5D, 0x5D, 0x55, 0x77, 0x3E, 0x00, 0x7C, 0xF8, 0x7B, 0xFC, 0xF3, 0x78, 0x40, 0x08, 0x18, 0x18,
+    0xFF, 0xFF, 0x18, 0x18, 0x18, 0x7F, 0xFF, 0x01, 0xEC, 0xC3, 0x7B, 0x8F, 0xC0, 0xFC, 0x73, 0x8F,
+    0xCD, 0xF3, 0x00, 0x36, 0x60, 0x00, 0x61, 0xB0, 0xD8, 0x6C, 0x36, 0x1B, 0x0D, 0xCE, 0xFF, 0xE8,
+    0x30, 0x18, 0x0C, 0x00, 0x3F, 0xBF, 0xF3, 0x79, 0xBC, 0xDB, 0xED, 0xF6, 0x1B, 0x0D, 0x86, 0xC3,
+    0x61, 0xB0, 0x1F, 0xA0, 0x21, 0x8E, 0xF7, 0x00, 0x77, 0xF3, 0x33, 0x3C, 0xFF, 0x1E, 0x3C, 0x6F,
+    0x8E, 0x00, 0xCC, 0x3B, 0xC7, 0xB8, 0x67, 0x39, 0xDD, 0xEE, 0xE2, 0x30, 0x70, 0x21, 0xC1, 0x8F,
+    0x0C, 0x0C, 0x60, 0x33, 0x80, 0xCC, 0x00, 0x67, 0x03, 0x1C, 0x18, 0xD0, 0xE7, 0xE3, 0x1F, 0xD8,
+    0x04, 0x00, 0x00, 0x70, 0x21, 0xC1, 0x8F, 0x0C, 0x0C, 0x60, 0x33, 0x80, 0xCC, 0x00, 0x6F, 0x83,
+    0x33, 0x18, 0x18, 0xE1, 0xE3, 0x0C, 0x18, 0x3F, 0x00, 0x00, 0xFC, 0x18, 0x38, 0x60, 0xE1, 0xC1,
+    0xE3, 0x0C, 0xCC, 0x0F, 0xB0, 0x0C, 0xC7, 0x03, 0x9E, 0x0E, 0x6C, 0x19, 0xFC, 0x63, 0xF9, 0x80,
+    0x60, 0x00, 0x00, 0x0C, 0x06, 0x03, 0x00, 0x00, 0xC0, 0xE0, 0xE0, 0xE0, 0xE1, 0xF0, 0xD8, 0x6F,
+    0xE1, 0xE0, 0x1C, 0x01, 0x80, 0x10, 0x07, 0x01, 0xE0, 0x3E, 0x06, 0xC1, 0xD8, 0x33, 0x06, 0x31,
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+    0xFF, 0xFF, 0x00, 0x18, 0x18, 0x18, 0x18, 0xFF, 0xFF, 0xFF, 0x3F, 0xC0, 0xD8, 0xD8, 0xD0, 0xD0,
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+    0xF0, 0x3C, 0xF3, 0x1C, 0xF0, 0xC3, 0x0C, 0x30, 0xC3, 0x0C, 0x67, 0x30, 0x36, 0x60, 0x38, 0x79,
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+    0x66, 0x4D, 0xF3, 0x80, 0x7C, 0xF8, 0x7C, 0xFC, 0x7F, 0xF7, 0xFF, 0x00, 0x03, 0x06, 0x06, 0x0C,
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+    0x30, 0x30, 0x20, 0x60, 0x60, 0x40, 0xFF, 0xE0, 0xFF, 0x7F, 0x80, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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+    0xF0, 0x04, 0x0F, 0x05, 0x0F, 0x8F, 0xEF, 0xFE, 0xFF, 0x7F, 0xA8, 0xFC, 0x7E, 0xFF, 0x7F, 0xBF,
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+    0x83, 0x00, 0xC0, 0x1F, 0x0F, 0xE3, 0x1C, 0xC3, 0x30, 0xDF, 0x03, 0x01, 0xF0, 0x30, 0x0C, 0x07,
+    0xF9, 0xFF, 0x38, 0x63, 0xC6, 0x3C, 0x63, 0xC6, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x33, 0x63,
+    0x3E, 0x31, 0xE3, 0x1E, 0x3F, 0x83, 0xFC, 0x30, 0xCF, 0xFF, 0xFF, 0xF3, 0x1C, 0x3F, 0xC3, 0xF0,
+    0x30, 0x03, 0x00, 0x30, 0x03, 0x00, 0x63, 0xC6, 0x63, 0xC6, 0x63, 0xCE, 0x63, 0xCC, 0xFF, 0xFE,
+    0xFF, 0xFE, 0xFF, 0xFE, 0xFF, 0xFE, 0x36, 0x6C, 0x3C, 0x78, 0x3C, 0x78, 0x1C, 0x38, 0x00, 0xC0,
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+    0xFF, 0x80, 0x1F, 0x87, 0xF8, 0xC3, 0x98, 0x3F, 0xC7, 0xFC, 0x3F, 0x07, 0xF3, 0x70, 0x66, 0x1C,
+    0xF7, 0x0F, 0xE0, 0x60, 0x30, 0xC6, 0x38, 0xCE, 0x1B, 0x83, 0xE1, 0xFF, 0x3F, 0xE1, 0xF0, 0x37,
+    0x06, 0x70, 0xC7, 0x18, 0x70, 0x3F, 0x83, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0xF7, 0xFF, 0x3F, 0xC3,
+    0xF0, 0x30, 0x03, 0x00, 0x30, 0x03, 0x00, 0x08, 0x06, 0x0F, 0x8F, 0xEE, 0xDE, 0x6F, 0x37, 0x98,
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+    0x37, 0x98, 0xCC, 0x66, 0xF3, 0x79, 0xBF, 0xFB, 0xF8, 0x70, 0x18, 0xFF, 0xFF, 0xE0, 0x63, 0xFF,
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+    0xE3, 0xE7, 0x63, 0x31, 0x99, 0x8F, 0xC7, 0xC0, 0x0C, 0x03, 0x03, 0xF1, 0xFE, 0xED, 0xB3, 0x7C,
+    0xCF, 0x33, 0xCC, 0xF3, 0x3C, 0xCF, 0x33, 0xC0, 0xF0, 0x30, 0x3F, 0x87, 0xF8, 0xC3, 0x18, 0x73,
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+    0x30, 0xCC, 0x33, 0x0C, 0xFE, 0x3F, 0x8C, 0x73, 0x0C, 0xC3, 0xFF, 0xFF, 0xE1, 0xE0, 0x78, 0x08,
+    0x00, 0xE0, 0x0E, 0x00, 0xE0, 0x0F, 0xFF, 0xBF, 0xFC, 0xC0, 0x03, 0x00, 0x0C, 0x00, 0x00, 0x00,
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+    0x00, 0x08, 0x80, 0xE6, 0x0E, 0x18, 0xE0, 0x6F, 0xFF, 0xBF, 0xFC, 0xC1, 0xC3, 0x1C, 0x0C, 0xC0,
+    0x00, 0x00, 0x0C, 0x07, 0x83, 0xF1, 0xF6, 0x6C, 0xC3, 0x00, 0xC1, 0x32, 0x6D, 0xCF, 0xE1, 0xF0,
+    0x38, 0x00, 0x00, 0x7C, 0x7F, 0x38, 0x1E, 0x0F, 0x86, 0xE3, 0x38, 0x0E, 0x03, 0x80, 0x00, 0x1F,
+    0x1F, 0xC0, 0xE0, 0xF0, 0xF8, 0xEC, 0xE6, 0xE0, 0xE0, 0x00, 0x00, 0x00, 0x70, 0x1C, 0x27, 0x31,
+    0xD8, 0x7C, 0x1E, 0x3F, 0x3F, 0x80, 0x00, 0x01, 0xE1, 0xD9, 0xCD, 0xC7, 0xC3, 0xC1, 0xF8, 0xFE,
+    0x00, 0x38, 0x1E, 0x03, 0x87, 0xE7, 0xF7, 0x3B, 0x0F, 0x83, 0xC1, 0xE1, 0xB9, 0xCF, 0xC1, 0x80,
+    0x01, 0x03, 0xC3, 0xF9, 0xDE, 0x66, 0xDB, 0xB6, 0xCD, 0xB3, 0x7B, 0x8F, 0xC3, 0xC0, 0xC0, 0x0E,
+    0x07, 0x81, 0xE0, 0x6C, 0x33, 0x0C, 0xC3, 0x39, 0xC6, 0x61, 0x98, 0x67, 0xFF, 0xFF, 0xFF, 0x7F,
+    0xB0, 0xD8, 0x6C, 0x36, 0x1B, 0x0D, 0x86, 0xC3, 0x61, 0xB0, 0xD8, 0x6C, 0x36, 0x1B, 0x0D, 0x82,
+    0x7F, 0xDF, 0xF6, 0x00, 0xC0, 0x38, 0x07, 0x00, 0xC0, 0x18, 0x0E, 0x03, 0x01, 0x80, 0xE0, 0x70,
+    0x18, 0x07, 0xFD, 0xFF, 0xFF, 0xFF, 0x06, 0x0C, 0x30, 0x60, 0xC3, 0x06, 0x0C, 0x30, 0x60, 0xC3,
+    0x06, 0x0C, 0x30, 0x60, 0xC0, 0x77, 0xBF, 0xE0, 0x00, 0x00, 0xC0, 0x30, 0x0C, 0x06, 0x01, 0x80,
+    0x60, 0x18, 0x0C, 0x73, 0x3C, 0xC3, 0x30, 0x78, 0x1E, 0x07, 0x81, 0xE0, 0x13, 0x1F, 0xE6, 0xCD,
+    0xB3, 0x7F, 0x8E, 0xE0, 0x1C, 0xF3, 0x0C, 0x30, 0xC3, 0x0C, 0x30, 0xC3, 0x0C, 0x30, 0xCF, 0x38,
+    0x3B, 0x7F, 0xCE, 0x3B, 0x7F, 0xCE, 0x00, 0x0C, 0x0C, 0xFF, 0xFF, 0x7F, 0xFF, 0x30, 0x30, 0x01,
+    0x0F, 0x3E, 0xF0, 0xF0, 0x7C, 0x1F, 0x03, 0x7F, 0xFF, 0xC0, 0xF0, 0x7E, 0x0F, 0x07, 0x3E, 0xF8,
+    0xC0, 0x7F, 0xFF,
+};
+
+static const EpdGlyph spacegroteskGlyphs[] = {
+    { 0, 0, 10, 0, 0, 0, 0 }, // 
+    { 0, 0, 4, 0, 0, 0, 0 }, //  
+    { 4, 13, 4, 0, 12, 7, 0 }, // !
+    { 7, 6, 7, 0, 13, 6, 7 }, // "
+    { 10, 12, 10, 0, 12, 15, 13 }, // #
+    { 10, 16, 10, 0, 14, 20, 28 }, // $
+    { 13, 13, 13, 0, 12, 22, 48 }, // %
+    { 10, 12, 10, 0, 12, 15, 70 }, // &
+    { 4, 6, 4, 0, 13, 3, 85 }, // '
+    { 6, 17, 6, 1, 13, 13, 88 }, // (
+    { 6, 17, 6, 0, 13, 13, 101 }, // )
+    { 8, 8, 9, 0, 12, 8, 114 }, // *
+    { 8, 8, 10, 1, 10, 8, 122 }, // +
+    { 4, 6, 4, 0, 3, 3, 130 }, // ,
+    { 6, 2, 8, 1, 5, 2, 133 }, // -
+    { 4, 4, 4, 0, 3, 2, 135 }, // .
+    { 7, 16, 6, 0, 12, 14, 137 }, // /
+    { 9, 13, 11, 1, 12, 15, 151 }, // 0
+    { 6, 12, 7, 0, 12, 9, 166 }, // 1
+    { 10, 12, 10, 0, 12, 15, 175 }, // 2
+    { 10, 13, 10, 0, 12, 17, 190 }, // 3
+    { 10, 12, 10, 0, 12, 15, 207 }, // 4
+    { 10, 13, 10, 0, 12, 17, 222 }, // 5
+    { 9, 13, 10, 1, 12, 15, 239 }, // 6
+    { 9, 12, 9, 0, 12, 14, 254 }, // 7
+    { 10, 13, 10, 0, 12, 17, 268 }, // 8
+    { 10, 13, 10, 0, 12, 17, 285 }, // 9
+    { 4, 10, 4, 0, 9, 5, 302 }, // :
+    { 4, 12, 4, 0, 9, 6, 307 }, // ;
+    { 8, 8, 10, 1, 10, 8, 313 }, // <
+    { 8, 5, 10, 1, 8, 5, 321 }, // =
+    { 8, 8, 10, 1, 10, 8, 326 }, // >
+    { 9, 13, 10, 0, 12, 15, 334 }, // ?
+    { 15, 16, 17, 1, 12, 30, 349 }, // @
+    { 11, 12, 11, 0, 12, 17, 379 }, // A
+    { 11, 12, 11, 0, 12, 17, 396 }, // B
+    { 9, 13, 11, 1, 12, 15, 413 }, // C
+    { 11, 12, 11, 0, 12, 17, 428 }, // D
+    { 8, 12, 9, 1, 12, 12, 445 }, // E
+    { 8, 12, 9, 1, 12, 12, 457 }, // F
+    { 9, 13, 11, 1, 12, 15, 469 }, // G
+    { 9, 12, 11, 1, 12, 14, 484 }, // H
+    { 2, 12, 4, 1, 12, 3, 498 }, // I
+    { 10, 13, 10, 0, 12, 17, 501 }, // J
+    { 9, 12, 10, 1, 12, 14, 518 }, // K
+    { 8, 12, 9, 1, 12, 12, 532 }, // L
+    { 13, 12, 14, 1, 12, 20, 544 }, // M
+    { 9, 12, 11, 1, 12, 14, 564 }, // N
+    { 10, 13, 11, 1, 12, 17, 578 }, // O
+    { 9, 12, 10, 1, 12, 14, 595 }, // P
+    { 10, 15, 11, 1, 12, 19, 609 }, // Q
+    { 9, 12, 11, 1, 12, 14, 628 }, // R
+    { 10, 13, 10, 0, 12, 17, 642 }, // S
+    { 10, 12, 10, 0, 12, 15, 659 }, // T
+    { 9, 13, 11, 1, 12, 15, 674 }, // U
+    { 10, 12, 10, 0, 12, 15, 689 }, // V
+    { 14, 12, 15, 0, 12, 21, 704 }, // W
+    { 11, 12, 11, 0, 12, 17, 725 }, // X
+    { 10, 12, 10, 0, 12, 15, 742 }, // Y
+    { 9, 12, 10, 0, 12, 14, 757 }, // Z
+    { 5, 17, 6, 1, 13, 11, 771 }, // [
+    { 8, 16, 6, -1, 12, 16, 782 }, // <backslash>
+    { 5, 17, 6, 0, 13, 11, 798 }, // ]
+    { 9, 5, 10, 1, 12, 6, 809 }, // ^
+    { 9, 3, 10, 1, 0, 4, 815 }, // _
+    { 4, 3, 5, 0, 12, 2, 819 }, // `
+    { 10, 10, 10, 0, 9, 13, 821 }, // a
+    { 9, 13, 11, 1, 12, 15, 834 }, // b
+    { 10, 10, 10, 0, 9, 13, 849 }, // c
+    { 10, 13, 11, 0, 12, 17, 862 }, // d
+    { 9, 10, 10, 0, 9, 12, 879 }, // e
+    { 7, 12, 7, 0, 12, 11, 891 }, // f
+    { 10, 13, 11, 0, 9, 17, 902 }, // g
+    { 8, 12, 10, 1, 12, 12, 919 }, // h
+    { 3, 12, 4, 1, 12, 5, 931 }, // i
+    { 5, 16, 4, -1, 12, 10, 936 }, // j
+    { 8, 12, 9, 1, 12, 12, 946 }, // k
+    { 2, 12, 4, 1, 12, 3, 958 }, // l
+    { 13, 9, 14, 1, 9, 15, 961 }, // m
+    { 8, 9, 10, 1, 9, 9, 976 }, // n
+    { 10, 10, 10, 0, 9, 13, 985 }, // o
+    { 9, 13, 11, 1, 9, 15, 998 }, // p
+    { 10, 13, 11, 0, 9, 17, 1013 }, // q
+    { 5, 9, 6, 1, 9, 6, 1030 }, // r
+    { 8, 10, 9, 0, 9, 10, 1036 }, // s
+    { 7, 12, 8, 0, 12, 11, 1046 }, // t
+    { 8, 10, 10, 1, 9, 10, 1057 }, // u
+    { 9, 9, 9, 0, 9, 11, 1067 }, // v
+    { 13, 9, 13, 0, 9, 15, 1078 }, // w
+    { 10, 9, 10, 0, 9, 12, 1093 }, // x
+    { 8, 13, 10, 1, 9, 13, 1105 }, // y
+    { 7, 9, 9, 1, 9, 8, 1118 }, // z
+    { 7, 17, 7, 0, 13, 15, 1126 }, // {
+    { 2, 19, 4, 1, 14, 5, 1141 }, // |
+    { 7, 17, 7, 0, 13, 15, 1146 }, // }
+    { 8, 4, 10, 1, 8, 4, 1161 }, // ~
+    { 0, 0, 4, 0, 0, 0, 1165 }, //  
+    { 4, 13, 4, 0, 9, 7, 1165 }, // ¡
+    { 9, 13, 10, 1, 11, 15, 1172 }, // ¢
+    { 10, 12, 10, 0, 12, 15, 1187 }, // £
+    { 10, 10, 10, 0, 11, 13, 1202 }, // ¤
+    { 11, 12, 10, 0, 12, 17, 1215 }, // ¥
+    { 2, 19, 4, 1, 14, 5, 1232 }, // ¦
+    { 8, 13, 8, 0, 12, 13, 1237 }, // §
+    { 7, 3, 7, 0, 12, 3, 1250 }, // ¨
+    { 10, 13, 12, 1, 12, 17, 1253 }, // ©
+    { 7, 7, 7, 0, 12, 7, 1270 }, // ª
+    { 11, 8, 11, 0, 8, 11, 1277 }, // «
+    { 8, 4, 10, 1, 7, 4, 1288 }, // ¬
+    { 6, 2, 8, 1, 5, 2, 1292 }, // 
+    { 8, 8, 9, 0, 12, 8, 1294 }, // ®
+    { 7, 2, 7, 0, 11, 2, 1302 }, // ¯
+    { 6, 6, 6, 0, 12, 5, 1304 }, // °
+    { 8, 10, 10, 1, 10, 10, 1309 }, // ±
+    { 6, 7, 6, 0, 13, 6, 1319 }, // ²
+    { 6, 7, 6, 0, 12, 6, 1325 }, // ³
+    { 4, 3, 5, 0, 12, 2, 1331 }, // ´
+    { 9, 13, 10, 1, 9, 15, 1333 }, // µ
+    { 9, 12, 10, 0, 12, 14, 1348 }, // ¶
+    { 3, 4, 3, 0, 7, 2, 1362 }, // ·
+    { 5, 5, 5, 0, 1, 4, 1364 }, // ¸
+    { 4, 6, 4, 0, 12, 3, 1368 }, // ¹
+    { 7, 7, 7, 0, 12, 7, 1371 }, // º
+    { 10, 8, 11, 1, 8, 10, 1378 }, // »
+    { 14, 13, 14, 0, 12, 23, 1388 }, // ¼
+    { 14, 13, 14, 0, 12, 23, 1411 }, // ½
+    { 15, 13, 15, 0, 12, 25, 1434 }, // ¾
+    { 9, 13, 10, 0, 9, 15, 1459 }, // ¿
+    { 11, 15, 11, 0, 15, 21, 1474 }, // À
+    { 11, 15, 11, 0, 15, 21, 1495 }, // Á
+    { 11, 15, 11, 0, 15, 21, 1516 }, // Â
+    { 11, 15, 11, 0, 15, 21, 1537 }, // Ã
+    { 11, 15, 11, 0, 15, 21, 1558 }, // Ä
+    { 11, 16, 11, 0, 16, 22, 1579 }, // Å
+    { 14, 12, 14, 0, 12, 21, 1601 }, // Æ
+    { 9, 16, 11, 1, 12, 18, 1622 }, // Ç
+    { 8, 15, 9, 1, 15, 15, 1640 }, // È
+    { 8, 15, 9, 1, 15, 15, 1655 }, // É
+    { 8, 15, 9, 1, 15, 15, 1670 }, // Ê
+    { 8, 15, 9, 1, 15, 15, 1685 }, // Ë
+    { 3, 15, 4, 0, 15, 6, 1700 }, // Ì
+    { 3, 15, 4, 1, 15, 6, 1706 }, // Í
+    { 6, 15, 4, -1, 15, 12, 1712 }, // Î
+    { 6, 15, 4, -1, 15, 12, 1724 }, // Ï
+    { 11, 12, 11, 0, 12, 17, 1736 }, // Ð
+    { 9, 15, 11, 1, 15, 17, 1753 }, // Ñ
+    { 10, 16, 11, 1, 15, 20, 1770 }, // Ò
+    { 10, 16, 11, 1, 15, 20, 1790 }, // Ó
+    { 10, 16, 11, 1, 15, 20, 1810 }, // Ô
+    { 10, 16, 11, 1, 15, 20, 1830 }, // Õ
+    { 10, 16, 11, 1, 15, 20, 1850 }, // Ö
+    { 8, 8, 10, 1, 10, 8, 1870 }, // ×
+    { 10, 15, 11, 1, 13, 19, 1878 }, // Ø
+    { 9, 16, 11, 1, 15, 18, 1897 }, // Ù
+    { 9, 16, 11, 1, 15, 18, 1915 }, // Ú
+    { 9, 16, 11, 1, 15, 18, 1933 }, // Û
+    { 9, 16, 11, 1, 15, 18, 1951 }, // Ü
+    { 10, 15, 10, 0, 15, 19, 1969 }, // Ý
+    { 9, 12, 10, 1, 12, 14, 1988 }, // Þ
+    { 9, 13, 10, 1, 12, 15, 2002 }, // ß
+    { 10, 13, 10, 0, 12, 17, 2017 }, // à
+    { 10, 13, 10, 0, 12, 17, 2034 }, // á
+    { 10, 13, 10, 0, 12, 17, 2051 }, // â
+    { 10, 13, 10, 0, 12, 17, 2068 }, // ã
+    { 10, 13, 10, 0, 12, 17, 2085 }, // ä
+    { 10, 14, 10, 0, 13, 18, 2102 }, // å
+    { 15, 10, 15, 0, 9, 19, 2120 }, // æ
+    { 10, 13, 10, 0, 9, 17, 2139 }, // ç
+    { 9, 13, 10, 0, 12, 15, 2156 }, // è
+    { 9, 13, 10, 0, 12, 15, 2171 }, // é
+    { 9, 13, 10, 0, 12, 15, 2186 }, // ê
+    { 9, 13, 10, 0, 12, 15, 2201 }, // ë
+    { 3, 12, 4, 0, 12, 5, 2216 }, // ì
+    { 4, 12, 4, 1, 12, 6, 2221 }, // í
+    { 6, 12, 4, -1, 12, 9, 2227 }, // î
+    { 6, 12, 4, -1, 12, 9, 2236 }, // ï
+    { 10, 14, 10, 0, 13, 18, 2245 }, // ð
+    { 8, 12, 10, 1, 12, 12, 2263 }, // ñ
+    { 10, 13, 10, 0, 12, 17, 2275 }, // ò
+    { 10, 13, 10, 0, 12, 17, 2292 }, // ó
+    { 10, 13, 10, 0, 12, 17, 2309 }, // ô
+    { 10, 13, 10, 0, 12, 17, 2326 }, // õ
+    { 10, 13, 10, 0, 12, 17, 2343 }, // ö
+    { 8, 8, 10, 1, 10, 8, 2360 }, // ÷
+    { 10, 12, 10, 0, 10, 15, 2368 }, // ø
+    { 8, 13, 10, 1, 12, 13, 2383 }, // ù
+    { 8, 13, 10, 1, 12, 13, 2396 }, // ú
+    { 8, 13, 10, 1, 12, 13, 2409 }, // û
+    { 8, 13, 10, 1, 12, 13, 2422 }, // ü
+    { 8, 16, 10, 1, 12, 16, 2435 }, // ý
+    { 9, 16, 11, 1, 12, 18, 2451 }, // þ
+    { 8, 16, 10, 1, 12, 16, 2469 }, // ÿ
+    { 11, 14, 11, 0, 14, 20, 2485 }, // Ā
+    { 10, 12, 10, 0, 11, 15, 2505 }, // ā
+    { 11, 15, 11, 0, 15, 21, 2520 }, // Ă
+    { 10, 13, 10, 0, 12, 17, 2541 }, // ă
+    { 11, 15, 11, 0, 12, 21, 2558 }, // Ą
+    { 10, 12, 10, 0, 9, 15, 2579 }, // ą
+    { 9, 16, 11, 1, 15, 18, 2594 }, // Ć
+    { 10, 13, 10, 0, 12, 17, 2612 }, // ć
+    { 9, 16, 11, 1, 15, 18, 2629 }, // Ĉ
+    { 10, 13, 10, 0, 12, 17, 2647 }, // ĉ
+    { 9, 16, 11, 1, 15, 18, 2664 }, // Ċ
+    { 10, 13, 10, 0, 12, 17, 2682 }, // ċ
+    { 9, 16, 11, 1, 15, 18, 2699 }, // Č
+    { 10, 13, 10, 0, 12, 17, 2717 }, // č
+    { 11, 15, 11, 0, 15, 21, 2734 }, // Ď
+    { 13, 13, 12, 0, 12, 22, 2755 }, // ď
+    { 11, 12, 11, 0, 12, 17, 2777 }, // Đ
+    { 11, 13, 11, 0, 12, 18, 2794 }, // đ
+    { 8, 14, 9, 1, 14, 14, 2812 }, // Ē
+    { 9, 12, 10, 0, 11, 14, 2826 }, // ē
+    { 8, 15, 9, 1, 15, 15, 2840 }, // Ĕ
+    { 9, 13, 10, 0, 12, 15, 2855 }, // ĕ
+    { 8, 15, 9, 1, 15, 15, 2870 }, // Ė
+    { 9, 13, 10, 0, 12, 15, 2885 }, // ė
+    { 8, 15, 9, 1, 12, 15, 2900 }, // Ę
+    { 9, 12, 10, 0, 9, 14, 2915 }, // ę
+    { 8, 15, 9, 1, 15, 15, 2929 }, // Ě
+    { 9, 13, 10, 0, 12, 15, 2944 }, // ě
+    { 9, 16, 11, 1, 15, 18, 2959 }, // Ĝ
+    { 10, 16, 11, 0, 12, 20, 2977 }, // ĝ
+    { 9, 16, 11, 1, 15, 18, 2997 }, // Ğ
+    { 10, 16, 11, 0, 12, 20, 3015 }, // ğ
+    { 9, 16, 11, 1, 15, 18, 3035 }, // Ġ
+    { 10, 16, 11, 0, 12, 20, 3053 }, // ġ
+    { 9, 17, 11, 1, 12, 20, 3073 }, // Ģ
+    { 10, 17, 11, 0, 13, 22, 3093 }, // ģ
+    { 9, 15, 11, 1, 15, 17, 3115 }, // Ĥ
+    { 10, 15, 10, -1, 15, 19, 3132 }, // ĥ
+    { 11, 12, 11, 0, 12, 17, 3151 }, // Ħ
+    { 9, 12, 10, 0, 12, 14, 3168 }, // ħ
+    { 6, 15, 4, -1, 15, 12, 3182 }, // Ĩ
+    { 6, 12, 4, -1, 12, 9, 3194 }, // ĩ
+    { 6, 14, 4, -1, 14, 11, 3203 }, // Ī
+    { 6, 11, 4, -1, 11, 9, 3214 }, // ī
+    { 6, 15, 4, -1, 15, 12, 3223 }, // Ĭ
+    { 6, 12, 4, -1, 12, 9, 3235 }, // ĭ
+    { 3, 15, 4, 1, 12, 6, 3244 }, // Į
+    { 3, 15, 4, 1, 12, 6, 3250 }, // į
+    { 3, 15, 4, 1, 15, 6, 3256 }, // İ
+    { 2, 9, 4, 1, 9, 3, 3262 }, // ı
+    { 12, 13, 12, 0, 12, 20, 3265 }, // Ĳ
+    { 7, 16, 8, 1, 12, 14, 3285 }, // ĳ
+    { 10, 16, 10, 0, 15, 20, 3299 }, // Ĵ
+    { 6, 16, 4, -1, 12, 12, 3319 }, // ĵ
+    { 9, 17, 10, 1, 12, 20, 3331 }, // Ķ
+    { 8, 17, 9, 1, 12, 17, 3351 }, // ķ
+    { 8, 9, 9, 1, 9, 9, 3368 }, // ĸ
+    { 8, 15, 9, 1, 15, 15, 3377 }, // Ĺ
+    { 3, 15, 4, 1, 15, 6, 3392 }, // ĺ
+    { 8, 17, 9, 1, 12, 17, 3398 }, // Ļ
+    { 2, 17, 4, 1, 12, 5, 3415 }, // ļ
+    { 8, 12, 9, 1, 12, 12, 3420 }, // Ľ
+    { 5, 12, 5, 1, 12, 8, 3432 }, // ľ
+    { 8, 12, 9, 1, 12, 12, 3440 }, // Ŀ
+    { 6, 12, 7, 1, 12, 9, 3452 }, // ŀ
+    { 10, 12, 10, 0, 12, 15, 3461 }, // Ł
+    { 6, 12, 6, 0, 12, 9, 3476 }, // ł
+    { 9, 15, 11, 1, 15, 17, 3485 }, // Ń
+    { 8, 12, 10, 1, 12, 12, 3502 }, // ń
+    { 9, 17, 11, 1, 12, 20, 3514 }, // Ņ
+    { 8, 14, 10, 1, 9, 14, 3534 }, // ņ
+    { 9, 15, 11, 1, 15, 17, 3548 }, // Ň
+    { 8, 12, 10, 1, 12, 12, 3565 }, // ň
+    { 8, 13, 10, 1, 13, 13, 3577 }, // ŉ
+    { 9, 16, 11, 1, 12, 18, 3590 }, // Ŋ
+    { 8, 13, 10, 1, 9, 13, 3608 }, // ŋ
+    { 10, 15, 11, 1, 14, 19, 3621 }, // Ō
+    { 10, 12, 10, 0, 11, 15, 3640 }, // ō
+    { 10, 16, 11, 1, 15, 20, 3655 }, // Ŏ
+    { 10, 13, 10, 0, 12, 17, 3675 }, // ŏ
+    { 10, 16, 11, 1, 15, 20, 3692 }, // Ő
+    { 10, 13, 10, 0, 12, 17, 3712 }, // ő
+    { 13, 12, 14, 1, 12, 20, 3729 }, // Œ
+    { 17, 10, 17, 0, 9, 22, 3749 }, // œ
+    { 9, 15, 11, 1, 15, 17, 3771 }, // Ŕ
+    { 5, 12, 6, 1, 12, 8, 3788 }, // ŕ
+    { 9, 17, 11, 1, 12, 20, 3796 }, // Ŗ
+    { 5, 14, 6, 1, 9, 9, 3816 }, // ŗ
+    { 9, 15, 11, 1, 15, 17, 3825 }, // Ř
+    { 7, 12, 6, 0, 12, 11, 3842 }, // ř
+    { 10, 16, 10, 0, 15, 20, 3853 }, // Ś
+    { 8, 13, 9, 0, 12, 13, 3873 }, // ś
+    { 10, 16, 10, 0, 15, 20, 3886 }, // Ŝ
+    { 8, 13, 9, 0, 12, 13, 3906 }, // ŝ
+    { 10, 16, 10, 0, 12, 20, 3919 }, // Ş
+    { 8, 13, 9, 0, 9, 13, 3939 }, // ş
+    { 10, 16, 10, 0, 15, 20, 3952 }, // Š
+    { 8, 13, 9, 0, 12, 13, 3972 }, // š
+    { 10, 16, 10, 0, 12, 20, 3985 }, // Ţ
+    { 7, 16, 8, 0, 12, 14, 4005 }, // ţ
+    { 10, 15, 10, 0, 15, 19, 4019 }, // Ť
+    { 8, 13, 8, 0, 13, 13, 4038 }, // ť
+    { 10, 12, 10, 0, 12, 15, 4051 }, // Ŧ
+    { 7, 12, 8, 0, 12, 11, 4066 }, // ŧ
+    { 9, 16, 11, 1, 15, 18, 4077 }, // Ũ
+    { 8, 13, 10, 1, 12, 13, 4095 }, // ũ
+    { 9, 15, 11, 1, 14, 17, 4108 }, // Ū
+    { 8, 12, 10, 1, 11, 12, 4125 }, // ū
+    { 9, 16, 11, 1, 15, 18, 4137 }, // Ŭ
+    { 8, 13, 10, 1, 12, 13, 4155 }, // ŭ
+    { 9, 17, 11, 1, 16, 20, 4168 }, // Ů
+    { 8, 14, 10, 1, 13, 14, 4188 }, // ů
+    { 9, 16, 11, 1, 15, 18, 4202 }, // Ű
+    { 8, 13, 10, 1, 12, 13, 4220 }, // ű
+    { 9, 15, 11, 1, 12, 17, 4233 }, // Ų
+    { 9, 12, 10, 1, 9, 14, 4250 }, // ų
+    { 14, 15, 15, 0, 15, 27, 4264 }, // Ŵ
+    { 13, 12, 13, 0, 12, 20, 4291 }, // ŵ
+    { 10, 15, 10, 0, 15, 19, 4311 }, // Ŷ
+    { 8, 16, 10, 1, 12, 16, 4330 }, // ŷ
+    { 10, 15, 10, 0, 15, 19, 4346 }, // Ÿ
+    { 9, 15, 10, 0, 15, 17, 4365 }, // Ź
+    { 7, 12, 9, 1, 12, 11, 4382 }, // ź
+    { 9, 15, 10, 0, 15, 17, 4393 }, // Ż
+    { 7, 12, 9, 1, 12, 11, 4410 }, // ż
+    { 9, 15, 10, 0, 15, 17, 4421 }, // Ž
+    { 7, 12, 9, 1, 12, 11, 4438 }, // ž
+    { 6, 12, 6, 0, 12, 9, 4449 }, // ſ
+    { 4, 3, 0, 0, 12, 2, 4458 }, // ̀
+    { 4, 3, 0, 0, 12, 2, 4460 }, // ́
+    { 7, 3, 0, 0, 12, 3, 4462 }, // ̂
+    { 7, 3, 0, 0, 12, 3, 4465 }, // ̃
+    { 7, 2, 0, 0, 11, 2, 4468 }, // ̄
+    { 6, 3, 0, 0, 12, 3, 4470 }, // ̆
+    { 3, 3, 0, 0, 12, 2, 4473 }, // ̇
+    { 7, 3, 0, 0, 12, 3, 4475 }, // ̈
+    { 5, 4, 0, 0, 13, 3, 4478 }, // ̉
+    { 5, 4, 0, 0, 13, 3, 4481 }, // ̊
+    { 6, 3, 0, 0, 12, 3, 4484 }, // ̋
+    { 7, 3, 0, 0, 12, 3, 4487 }, // ̌
+    { 6, 3, 0, 0, 12, 3, 4490 }, // ̏
+    { 6, 3, 0, 0, 12, 3, 4493 }, // ̑
+    { 3, 4, 0, 0, 13, 2, 4496 }, // ̒
+    { 4, 3, 0, 0, 10, 2, 4498 }, // ̛
+    { 3, 3, 0, 0, -1, 2, 4500 }, // ̣
+    { 7, 3, 0, 0, -1, 3, 4502 }, // ̤
+    { 3, 4, 0, 0, -1, 2, 4505 }, // ̦
+    { 5, 5, 0, 0, 1, 4, 4507 }, // ̧
+    { 4, 4, 0, 0, 1, 2, 4511 }, // ̨
+    { 6, 3, 0, 0, -1, 3, 4513 }, // ̮
+    { 7, 2, 0, 0, -1, 2, 4516 }, // ̱
+    { 7, 2, 0, 0, 11, 2, 4518 }, // ̵
+    { 12, 2, 0, 0, 10, 3, 4520 }, // ̶
+    { 8, 12, 0, 0, 10, 12, 4523 }, // ̷
+    { 8, 15, 0, 0, 13, 15, 4535 }, // ̸
+    { 0, 0, 10, 0, 0, 0, 4550 }, //  
+    { 0, 0, 4, 0, 0, 0, 4550 }, //  
+    { 0, 0, 3, 0, 0, 0, 4550 }, //  
+    { 0, 0, 1, 0, 0, 0, 4550 }, //  
+    { 0, 0, 0, 0, 0, 0, 4550 }, // 
+    { 6, 2, 8, 1, 5, 2, 4550 }, // ‐
+    { 9, 2, 10, 1, 5, 3, 4552 }, // ‒
+    { 8, 2, 10, 1, 5, 2, 4555 }, // –
+    { 13, 2, 15, 1, 5, 4, 4557 }, // —
+    { 13, 2, 15, 1, 5, 4, 4561 }, // ―
+    { 4, 6, 4, 0, 13, 3, 4565 }, // ‘
+    { 4, 6, 4, 0, 13, 3, 4568 }, // ’
+    { 4, 6, 4, 0, 3, 3, 4571 }, // ‚
+    { 7, 6, 7, 0, 13, 6, 4574 }, // “
+    { 7, 6, 7, 0, 13, 6, 4580 }, // ”
+    { 7, 6, 7, 0, 3, 6, 4586 }, // „
+    { 8, 12, 10, 1, 12, 12, 4592 }, // †
+    { 8, 12, 10, 1, 12, 12, 4604 }, // ‡
+    { 4, 5, 6, 1, 7, 3, 4616 }, // •
+    { 11, 4, 11, 0, 3, 6, 4619 }, // …
+    { 16, 13, 16, 0, 12, 26, 4625 }, // ‰
+    { 3, 5, 3, 0, 12, 2, 4651 }, // ′
+    { 6, 5, 6, 0, 12, 4, 4653 }, // ″
+    { 7, 8, 8, 0, 8, 7, 4657 }, // ‹
+    { 6, 8, 8, 1, 8, 6, 4664 }, // ›
+    { 11, 13, 11, 0, 12, 18, 4670 }, // ⁄
+    { 11, 13, 12, 0, 12, 18, 4688 }, // ⁒
+    { 9, 16, 11, 1, 14, 18, 4706 }, // ₡
+    { 10, 12, 10, 0, 12, 15, 4724 }, // ₣
+    { 10, 12, 10, 0, 12, 15, 4739 }, // ₤
+    { 12, 12, 13, 0, 12, 18, 4754 }, // ₦
+    { 12, 12, 12, 0, 12, 18, 4772 }, // ₧
+    { 16, 12, 16, 0, 12, 24, 4790 }, // ₩
+    { 11, 14, 12, 0, 12, 20, 4814 }, // ₫
+    { 11, 13, 11, 0, 12, 18, 4834 }, // €
+    { 11, 12, 11, 0, 12, 17, 4852 }, // ₭
+    { 12, 12, 12, 0, 12, 18, 4869 }, // ₱
+    { 9, 16, 11, 1, 14, 18, 4887 }, // ₲
+    { 9, 16, 11, 1, 14, 18, 4905 }, // ₵
+    { 10, 12, 11, 1, 12, 15, 4923 }, // ₹
+    { 9, 12, 9, 0, 12, 14, 4938 }, // ₺
+    { 10, 14, 12, 1, 14, 18, 4952 }, // ₼
+    { 11, 12, 11, 0, 12, 17, 4970 }, // ₽
+    { 10, 16, 12, 1, 14, 20, 4987 }, // ₿
+    { 13, 10, 13, 0, 9, 17, 5007 }, // ←
+    { 10, 12, 10, 0, 12, 15, 5024 }, // ↑
+    { 13, 10, 13, 0, 9, 17, 5039 }, // →
+    { 10, 13, 10, 0, 12, 17, 5056 }, // ↓
+    { 13, 10, 13, 0, 9, 17, 5073 }, // ↔
+    { 10, 13, 10, 0, 12, 17, 5090 }, // ↕
+    { 9, 10, 10, 1, 9, 12, 5107 }, // ↖
+    { 9, 10, 10, 0, 9, 12, 5119 }, // ↗
+    { 9, 9, 10, 0, 9, 11, 5131 }, // ↘
+    { 9, 9, 10, 1, 9, 11, 5142 }, // ↙
+    { 9, 13, 10, 1, 12, 15, 5153 }, // ∂
+    { 10, 12, 11, 0, 10, 15, 5168 }, // ∅
+    { 10, 12, 10, 0, 12, 15, 5183 }, // ∆
+    { 9, 16, 10, 1, 12, 18, 5198 }, // ∏
+    { 10, 16, 10, 0, 12, 20, 5216 }, // ∑
+    { 8, 2, 10, 1, 7, 2, 5236 }, // −
+    { 7, 17, 6, 0, 14, 15, 5238 }, // ∕
+    { 5, 5, 10, 3, 8, 4, 5253 }, // ∙
+    { 10, 15, 10, 0, 15, 19, 5257 }, // √
+    { 10, 6, 10, 0, 9, 8, 5276 }, // ∞
+    { 6, 16, 10, 2, 12, 12, 5284 }, // ∫
+    { 8, 7, 10, 1, 9, 7, 5296 }, // ≈
+    { 8, 8, 10, 1, 10, 8, 5303 }, // ≠
+    { 8, 10, 10, 1, 10, 10, 5311 }, // ≤
+    { 8, 10, 10, 1, 10, 10, 5321 }, // ≥
+};
+
+static const EpdUnicodeInterval spacegroteskIntervals[] = {
+    { 0xD, 0xD, 0x0 },
+    { 0x20, 0x7E, 0x1 },
+    { 0xA0, 0xFF, 0x60 },
+    { 0x100, 0x17F, 0xC0 },
+    { 0x300, 0x304, 0x140 },
+    { 0x306, 0x30C, 0x145 },
+    { 0x30F, 0x30F, 0x14C },
+    { 0x311, 0x312, 0x14D },
+    { 0x31B, 0x31B, 0x14F },
+    { 0x323, 0x324, 0x150 },
+    { 0x326, 0x328, 0x152 },
+    { 0x32E, 0x32E, 0x155 },
+    { 0x331, 0x331, 0x156 },
+    { 0x335, 0x338, 0x157 },
+    { 0x2007, 0x200B, 0x15B },
+    { 0x2010, 0x2010, 0x160 },
+    { 0x2012, 0x2015, 0x161 },
+    { 0x2018, 0x201A, 0x165 },
+    { 0x201C, 0x201E, 0x168 },
+    { 0x2020, 0x2022, 0x16B },
+    { 0x2026, 0x2026, 0x16E },
+    { 0x2030, 0x2030, 0x16F },
+    { 0x2032, 0x2033, 0x170 },
+    { 0x2039, 0x203A, 0x172 },
+    { 0x2044, 0x2044, 0x174 },
+    { 0x2052, 0x2052, 0x175 },
+    { 0x20A1, 0x20A1, 0x176 },
+    { 0x20A3, 0x20A4, 0x177 },
+    { 0x20A6, 0x20A7, 0x179 },
+    { 0x20A9, 0x20A9, 0x17B },
+    { 0x20AB, 0x20AD, 0x17C },
+    { 0x20B1, 0x20B2, 0x17F },
+    { 0x20B5, 0x20B5, 0x181 },
+    { 0x20B9, 0x20BA, 0x182 },
+    { 0x20BC, 0x20BD, 0x184 },
+    { 0x20BF, 0x20BF, 0x186 },
+    { 0x2190, 0x2199, 0x187 },
+    { 0x2202, 0x2202, 0x191 },
+    { 0x2205, 0x2206, 0x192 },
+    { 0x220F, 0x220F, 0x194 },
+    { 0x2211, 0x2212, 0x195 },
+    { 0x2215, 0x2215, 0x197 },
+    { 0x2219, 0x221A, 0x198 },
+    { 0x221E, 0x221E, 0x19A },
+    { 0x222B, 0x222B, 0x19B },
+    { 0x2248, 0x2248, 0x19C },
+    { 0x2260, 0x2260, 0x19D },
+    { 0x2264, 0x2265, 0x19E },
+};
+
+static const EpdFontData spacegrotesk = {
+    spacegroteskBitmaps,
+    spacegroteskGlyphs,
+    spacegroteskIntervals,
+    48,
+    21,
+    17,
+    -5,
+    false,
+};
@@ -0,0 +1,137 @@
+#!/bin/bash
+
+set -e
+
+cd "$(dirname "$0")/../builtinFonts"
+
+echo "// The contents of this file are generated by ./lib/EpdFont/scripts/build-font-ids.sh"
+echo "#pragma once"
+echo ""
+
+echo "#define ALEO_12_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./aleo_12_regular.h",
+  "./aleo_12_bold.h",
+  "./aleo_12_bolditalic.h",
+  "./aleo_12_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define ALEO_14_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./aleo_14_regular.h",
+  "./aleo_14_bold.h",
+  "./aleo_14_bolditalic.h",
+  "./aleo_14_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define ALEO_16_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./aleo_16_regular.h",
+  "./aleo_16_bold.h",
+  "./aleo_16_bolditalic.h",
+  "./aleo_16_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define ALEO_18_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./aleo_18_regular.h",
+  "./aleo_18_bold.h",
+  "./aleo_18_bolditalic.h",
+  "./aleo_18_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define NOTOSANS_12_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./notosans_12_regular.h",
+  "./notosans_12_bold.h",
+  "./notosans_12_bolditalic.h",
+  "./notosans_12_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define NOTOSANS_14_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./notosans_14_regular.h",
+  "./notosans_14_bold.h",
+  "./notosans_14_bolditalic.h",
+  "./notosans_14_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define NOTOSANS_16_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./notosans_16_regular.h",
+  "./notosans_16_bold.h",
+  "./notosans_16_bolditalic.h",
+  "./notosans_16_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define NOTOSANS_18_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./notosans_18_regular.h",
+  "./notosans_18_bold.h",
+  "./notosans_18_bolditalic.h",
+  "./notosans_18_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define OPENDYSLEXIC_8_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./opendyslexic_8_regular.h",
+  "./opendyslexic_8_bold.h",
+  "./opendyslexic_8_bolditalic.h",
+  "./opendyslexic_8_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define OPENDYSLEXIC_10_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./opendyslexic_10_regular.h",
+  "./opendyslexic_10_bold.h",
+  "./opendyslexic_10_bolditalic.h",
+  "./opendyslexic_10_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define OPENDYSLEXIC_12_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./opendyslexic_12_regular.h",
+  "./opendyslexic_12_bold.h",
+  "./opendyslexic_12_bolditalic.h",
+  "./opendyslexic_12_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define OPENDYSLEXIC_14_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./opendyslexic_14_regular.h",
+  "./opendyslexic_14_bold.h",
+  "./opendyslexic_14_bolditalic.h",
+  "./opendyslexic_14_italic.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define UI_10_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./ubuntu_10_regular.h",
+  "./ubuntu_10_bold.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define UI_12_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./ubuntu_12_regular.h",
+  "./ubuntu_12_bold.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
+
+echo "#define SMALL_FONT_ID ($(
+ruby -rdigest -e 'puts [
+  "./spacegrotesk.h",
+].map{|f| Digest::SHA256.hexdigest(File.read(f)).to_i(16) }.sum % (2 ** 32) - (2 ** 31)'
+))"
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+set -e
+
+cd "$(dirname "$0")"
+
+READER_FONT_STYLES=("Regular" "Italic" "Bold" "BoldItalic")
+ALEO_FONT_SIZES=(12 14 16 18)
+NOTOSANS_FONT_SIZES=(12 14 16 18)
+OPENDYSLEXIC_FONT_SIZES=(8 10 12 14)
+
+for size in ${ALEO_FONT_SIZES[@]}; do
+  for style in ${READER_FONT_STYLES[@]}; do
+    font_name="aleo_${size}_$(echo $style | tr '[:upper:]' '[:lower:]')"
+    font_path="../builtinFonts/source/Aleo/Aleo-${style}.ttf"
+    output_path="../builtinFonts/${font_name}.h"
+    python fontconvert.py $font_name $size $font_path --2bit > $output_path
+    echo "Generated $output_path"
+  done
+done
+
+for size in ${NOTOSANS_FONT_SIZES[@]}; do
+  for style in ${READER_FONT_STYLES[@]}; do
+    font_name="notosans_${size}_$(echo $style | tr '[:upper:]' '[:lower:]')"
+    font_path="../builtinFonts/source/NotoSans/NotoSans-${style}.ttf"
+    output_path="../builtinFonts/${font_name}.h"
+    python fontconvert.py $font_name $size $font_path --2bit > $output_path
+    echo "Generated $output_path"
+  done
+done
+
+for size in ${OPENDYSLEXIC_FONT_SIZES[@]}; do
+  for style in ${READER_FONT_STYLES[@]}; do
+    font_name="opendyslexic_${size}_$(echo $style | tr '[:upper:]' '[:lower:]')"
+    font_path="../builtinFonts/source/OpenDyslexic/OpenDyslexic-${style}.otf"
+    output_path="../builtinFonts/${font_name}.h"
+    python fontconvert.py $font_name $size $font_path --2bit > $output_path
+    echo "Generated $output_path"
+  done
+done
+
+UI_FONT_SIZES=(10 12)
+UI_FONT_STYLES=("Regular" "Bold")
+
+for size in ${UI_FONT_SIZES[@]}; do
+  for style in ${UI_FONT_STYLES[@]}; do
+    font_name="ubuntu_${size}_$(echo $style | tr '[:upper:]' '[:lower:]')"
+    font_path="../builtinFonts/source/Ubuntu/Ubuntu-${style}.ttf"
+    output_path="../builtinFonts/${font_name}.h"
+    python fontconvert.py $font_name $size $font_path > $output_path
+    echo "Generated $output_path"
+  done
+done
+
+python fontconvert.py spacegrotesk 8 ../builtinFonts/source/SpaceGrotesk/SpaceGrotesk-Regular.ttf > ../builtinFonts/spacegrotesk.h
@@ -1,13 +1,11 @@
 #include "Epub.h"

+#include <FsHelpers.h>
 #include <HardwareSerial.h>
 #include <JpegToBmpConverter.h>
-#include <SD.h>
+#include <SDCardManager.h>
 #include <ZipFile.h>

-#include <map>
-
-#include "Epub/FsHelpers.h"
 #include "Epub/parsers/ContainerParser.h"
 #include "Epub/parsers/ContentOpfParser.h"
 #include "Epub/parsers/TocNcxParser.h"
@@ -44,7 +42,15 @@ bool Epub::findContentOpfFile(std::string* contentOpfFile) const {
  return true;
 }

-bool Epub::parseContentOpf(const std::string& contentOpfFilePath) {
+bool Epub::parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata) {
+  std::string contentOpfFilePath;
+  if (!findContentOpfFile(&contentOpfFilePath)) {
+    Serial.printf("[%lu] [EBP] Could not find content.opf in zip\n", millis());
+    return false;
+  }
+
+  contentBasePath = contentOpfFilePath.substr(0, contentOpfFilePath.find_last_of('/') + 1);
+
  Serial.printf("[%lu] [EBP] Parsing content.opf: %s\n", millis(), contentOpfFilePath.c_str());

  size_t contentOpfSize;
@@ -53,8 +59,7 @@ bool Epub::parseContentOpf(const std::string& contentOpfFilePath) {
    return false;
  }

-  ContentOpfParser opfParser(getBasePath(), contentOpfSize);
-
+  ContentOpfParser opfParser(getCachePath(), getBasePath(), contentOpfSize, bookMetadataCache.get());
  if (!opfParser.setup()) {
    Serial.printf("[%lu] [EBP] Could not setup content.opf parser\n", millis());
    return false;
@@ -66,26 +71,20 @@ bool Epub::parseContentOpf(const std::string& contentOpfFilePath) {
  }

  // Grab data from opfParser into epub
-  title = opfParser.title;
-  if (!opfParser.coverItemId.empty() && opfParser.items.count(opfParser.coverItemId) > 0) {
-    coverImageItem = opfParser.items.at(opfParser.coverItemId);
-  }
+  bookMetadata.title = opfParser.title;
+  bookMetadata.author = opfParser.author;
+  bookMetadata.coverItemHref = opfParser.coverItemHref;
+  bookMetadata.textReferenceHref = opfParser.textReferenceHref;

  if (!opfParser.tocNcxPath.empty()) {
    tocNcxItem = opfParser.tocNcxPath;
  }

-  for (auto& spineRef : opfParser.spineRefs) {
-    if (opfParser.items.count(spineRef)) {
-      spine.emplace_back(spineRef, opfParser.items.at(spineRef));
-    }
-  }
-
  Serial.printf("[%lu] [EBP] Successfully parsed content.opf\n", millis());
  return true;
 }

-bool Epub::parseTocNcxFile() {
+bool Epub::parseTocNcxFile() const {
  // the ncx file should have been specified in the content.opf file
  if (tocNcxItem.empty()) {
    Serial.printf("[%lu] [EBP] No ncx file specified\n", millis());
@@ -95,27 +94,35 @@ bool Epub::parseTocNcxFile() {
  Serial.printf("[%lu] [EBP] Parsing toc ncx file: %s\n", millis(), tocNcxItem.c_str());

  const auto tmpNcxPath = getCachePath() + "/toc.ncx";
-  File tempNcxFile = SD.open(tmpNcxPath.c_str(), FILE_WRITE);
+  FsFile tempNcxFile;
+  if (!SdMan.openFileForWrite("EBP", tmpNcxPath, tempNcxFile)) {
+    return false;
+  }
  readItemContentsToStream(tocNcxItem, tempNcxFile, 1024);
  tempNcxFile.close();
-  tempNcxFile = SD.open(tmpNcxPath.c_str(), FILE_READ);
+  if (!SdMan.openFileForRead("EBP", tmpNcxPath, tempNcxFile)) {
+    return false;
+  }
  const auto ncxSize = tempNcxFile.size();

-  TocNcxParser ncxParser(contentBasePath, ncxSize);
+  TocNcxParser ncxParser(contentBasePath, ncxSize, bookMetadataCache.get());

  if (!ncxParser.setup()) {
    Serial.printf("[%lu] [EBP] Could not setup toc ncx parser\n", millis());
+    tempNcxFile.close();
    return false;
  }

  const auto ncxBuffer = static_cast<uint8_t*>(malloc(1024));
  if (!ncxBuffer) {
    Serial.printf("[%lu] [EBP] Could not allocate memory for toc ncx parser\n", millis());
+    tempNcxFile.close();
    return false;
  }

  while (tempNcxFile.available()) {
    const auto readSize = tempNcxFile.read(ncxBuffer, 1024);
+    if (readSize == 0) break;
    const auto processedSize = ncxParser.write(ncxBuffer, readSize);

    if (processedSize != readSize) {
@@ -128,69 +135,103 @@ bool Epub::parseTocNcxFile() {

  free(ncxBuffer);
  tempNcxFile.close();
-  SD.remove(tmpNcxPath.c_str());
+  SdMan.remove(tmpNcxPath.c_str());

-  this->toc = std::move(ncxParser.toc);
-
-  Serial.printf("[%lu] [EBP] Parsed %d TOC items\n", millis(), this->toc.size());
+  Serial.printf("[%lu] [EBP] Parsed TOC items\n", millis());
  return true;
 }

 // load in the meta data for the epub file
-bool Epub::load() {
+bool Epub::load(const bool buildIfMissing) {
  Serial.printf("[%lu] [EBP] Loading ePub: %s\n", millis(), filepath.c_str());

-  std::string contentOpfFilePath;
-  if (!findContentOpfFile(&contentOpfFilePath)) {
-    Serial.printf("[%lu] [EBP] Could not find content.opf in zip\n", millis());
+  // Initialize spine/TOC cache
+  bookMetadataCache.reset(new BookMetadataCache(cachePath));
+
+  // Try to load existing cache first
+  if (bookMetadataCache->load()) {
+    Serial.printf("[%lu] [EBP] Loaded ePub: %s\n", millis(), filepath.c_str());
+    return true;
+  }
+
+  // If we didn't load from cache above and we aren't allowed to build, fail now
+  if (!buildIfMissing) {
    return false;
  }

-  Serial.printf("[%lu] [EBP] Found content.opf at: %s\n", millis(), contentOpfFilePath.c_str());
+  // Cache doesn't exist or is invalid, build it
+  Serial.printf("[%lu] [EBP] Cache not found, building spine/TOC cache\n", millis());
+  setupCacheDir();

-  contentBasePath = contentOpfFilePath.substr(0, contentOpfFilePath.find_last_of('/') + 1);
+  // Begin building cache - stream entries to disk immediately
+  if (!bookMetadataCache->beginWrite()) {
+    Serial.printf("[%lu] [EBP] Could not begin writing cache\n", millis());
+    return false;
+  }

-  if (!parseContentOpf(contentOpfFilePath)) {
+  // OPF Pass
+  BookMetadataCache::BookMetadata bookMetadata;
+  if (!bookMetadataCache->beginContentOpfPass()) {
+    Serial.printf("[%lu] [EBP] Could not begin writing content.opf pass\n", millis());
+    return false;
+  }
+  if (!parseContentOpf(bookMetadata)) {
    Serial.printf("[%lu] [EBP] Could not parse content.opf\n", millis());
    return false;
  }
+  if (!bookMetadataCache->endContentOpfPass()) {
+    Serial.printf("[%lu] [EBP] Could not end writing content.opf pass\n", millis());
+    return false;
+  }

+  // TOC Pass
+  if (!bookMetadataCache->beginTocPass()) {
+    Serial.printf("[%lu] [EBP] Could not begin writing toc pass\n", millis());
+    return false;
+  }
  if (!parseTocNcxFile()) {
    Serial.printf("[%lu] [EBP] Could not parse toc\n", millis());
    return false;
  }
+  if (!bookMetadataCache->endTocPass()) {
+    Serial.printf("[%lu] [EBP] Could not end writing toc pass\n", millis());
+    return false;
+  }
+
+  // Close the cache files
+  if (!bookMetadataCache->endWrite()) {
+    Serial.printf("[%lu] [EBP] Could not end writing cache\n", millis());
+    return false;
+  }
+
+  // Build final book.bin
+  if (!bookMetadataCache->buildBookBin(filepath, bookMetadata)) {
+    Serial.printf("[%lu] [EBP] Could not update mappings and sizes\n", millis());
+    return false;
+  }
+
+  if (!bookMetadataCache->cleanupTmpFiles()) {
+    Serial.printf("[%lu] [EBP] Could not cleanup tmp files - ignoring\n", millis());
+  }
+
+  // Reload the cache from disk so it's in the correct state
+  bookMetadataCache.reset(new BookMetadataCache(cachePath));
+  if (!bookMetadataCache->load()) {
+    Serial.printf("[%lu] [EBP] Failed to reload cache after writing\n", millis());
+    return false;
+  }

-  initializeSpineItemSizes();
  Serial.printf("[%lu] [EBP] Loaded ePub: %s\n", millis(), filepath.c_str());
-
  return true;
 }

-void Epub::initializeSpineItemSizes() {
-  Serial.printf("[%lu] [EBP] Calculating book size\n", millis());
-
-  const size_t spineItemsCount = getSpineItemsCount();
-  size_t cumSpineItemSize = 0;
-  const ZipFile zip("/sd" + filepath);
-
-  for (size_t i = 0; i < spineItemsCount; i++) {
-    std::string spineItem = getSpineItem(i);
-    size_t s = 0;
-    getItemSize(zip, spineItem, &s);
-    cumSpineItemSize += s;
-    cumulativeSpineItemSize.emplace_back(cumSpineItemSize);
-  }
-
-  Serial.printf("[%lu] [EBP] Book size: %lu\n", millis(), cumSpineItemSize);
-}
-
 bool Epub::clearCache() const {
-  if (!SD.exists(cachePath.c_str())) {
+  if (!SdMan.exists(cachePath.c_str())) {
    Serial.printf("[%lu] [EPB] Cache does not exist, no action needed\n", millis());
    return true;
  }

-  if (!FsHelpers::removeDir(cachePath.c_str())) {
+  if (!SdMan.removeDir(cachePath.c_str())) {
    Serial.printf("[%lu] [EPB] Failed to clear cache\n", millis());
    return false;
  }
@@ -200,55 +241,83 @@ bool Epub::clearCache() const {
 }

 void Epub::setupCacheDir() const {
-  if (SD.exists(cachePath.c_str())) {
+  if (SdMan.exists(cachePath.c_str())) {
    return;
  }

-  // Loop over each segment of the cache path and create directories as needed
-  for (size_t i = 1; i < cachePath.length(); i++) {
-    if (cachePath[i] == '/') {
-      SD.mkdir(cachePath.substr(0, i).c_str());
-    }
-  }
-  SD.mkdir(cachePath.c_str());
+  SdMan.mkdir(cachePath.c_str());
 }

 const std::string& Epub::getCachePath() const { return cachePath; }

 const std::string& Epub::getPath() const { return filepath; }

-const std::string& Epub::getTitle() const { return title; }
+const std::string& Epub::getTitle() const {
+  static std::string blank;
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    return blank;
+  }
+
+  return bookMetadataCache->coreMetadata.title;
+}
+
+const std::string& Epub::getAuthor() const {
+  static std::string blank;
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    return blank;
+  }
+
+  return bookMetadataCache->coreMetadata.author;
+}

 std::string Epub::getCoverBmpPath() const { return cachePath + "/cover.bmp"; }

 bool Epub::generateCoverBmp() const {
  // Already generated, return true
-  if (SD.exists(getCoverBmpPath().c_str())) {
+  if (SdMan.exists(getCoverBmpPath().c_str())) {
    return true;
  }

-  if (coverImageItem.empty()) {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    Serial.printf("[%lu] [EBP] Cannot generate cover BMP, cache not loaded\n", millis());
+    return false;
+  }
+
+  const auto coverImageHref = bookMetadataCache->coreMetadata.coverItemHref;
+  if (coverImageHref.empty()) {
    Serial.printf("[%lu] [EBP] No known cover image\n", millis());
    return false;
  }

-  if (coverImageItem.substr(coverImageItem.length() - 4) == ".jpg" ||
-      coverImageItem.substr(coverImageItem.length() - 5) == ".jpeg") {
+  if (coverImageHref.substr(coverImageHref.length() - 4) == ".jpg" ||
+      coverImageHref.substr(coverImageHref.length() - 5) == ".jpeg") {
    Serial.printf("[%lu] [EBP] Generating BMP from JPG cover image\n", millis());
-    File coverJpg = SD.open((getCachePath() + "/.cover.jpg").c_str(), FILE_WRITE, true);
-    readItemContentsToStream(coverImageItem, coverJpg, 1024);
+    const auto coverJpgTempPath = getCachePath() + "/.cover.jpg";
+
+    FsFile coverJpg;
+    if (!SdMan.openFileForWrite("EBP", coverJpgTempPath, coverJpg)) {
+      return false;
+    }
+    readItemContentsToStream(coverImageHref, coverJpg, 1024);
    coverJpg.close();

-    coverJpg = SD.open((getCachePath() + "/.cover.jpg").c_str(), FILE_READ);
-    File coverBmp = SD.open(getCoverBmpPath().c_str(), FILE_WRITE, true);
+    if (!SdMan.openFileForRead("EBP", coverJpgTempPath, coverJpg)) {
+      return false;
+    }
+
+    FsFile coverBmp;
+    if (!SdMan.openFileForWrite("EBP", getCoverBmpPath(), coverBmp)) {
+      coverJpg.close();
+      return false;
+    }
    const bool success = JpegToBmpConverter::jpegFileToBmpStream(coverJpg, coverBmp);
    coverJpg.close();
    coverBmp.close();
-    SD.remove((getCachePath() + "/.cover.jpg").c_str());
+    SdMan.remove(coverJpgTempPath.c_str());

    if (!success) {
      Serial.printf("[%lu] [EBP] Failed to generate BMP from JPG cover image\n", millis());
-      SD.remove(getCoverBmpPath().c_str());
+      SdMan.remove(getCoverBmpPath().c_str());
    }
    Serial.printf("[%lu] [EBP] Generated BMP from JPG cover image, success: %s\n", millis(), success ? "yes" : "no");
    return success;
@@ -259,47 +328,15 @@ bool Epub::generateCoverBmp() const {
  return false;
 }

-std::string normalisePath(const std::string& path) {
-  std::vector<std::string> components;
-  std::string component;
-
-  for (const auto c : path) {
-    if (c == '/') {
-      if (!component.empty()) {
-        if (component == "..") {
-          if (!components.empty()) {
-            components.pop_back();
-          }
-        } else {
-          components.push_back(component);
-        }
-        component.clear();
-      }
-    } else {
-      component += c;
-    }
+uint8_t* Epub::readItemContentsToBytes(const std::string& itemHref, size_t* size, const bool trailingNullByte) const {
+  if (itemHref.empty()) {
+    Serial.printf("[%lu] [EBP] Failed to read item, empty href\n", millis());
+    return nullptr;
  }

-  if (!component.empty()) {
-    components.push_back(component);
-  }
+  const std::string path = FsHelpers::normalisePath(itemHref);

-  std::string result;
-  for (const auto& c : components) {
-    if (!result.empty()) {
-      result += "/";
-    }
-    result += c;
-  }
-
-  return result;
-}
-
-uint8_t* Epub::readItemContentsToBytes(const std::string& itemHref, size_t* size, bool trailingNullByte) const {
-  const ZipFile zip("/sd" + filepath);
-  const std::string path = normalisePath(itemHref);
-
-  const auto content = zip.readFileToMemory(path.c_str(), size, trailingNullByte);
+  const auto content = ZipFile(filepath).readFileToMemory(path.c_str(), size, trailingNullByte);
  if (!content) {
    Serial.printf("[%lu] [EBP] Failed to read item %s\n", millis(), path.c_str());
    return nullptr;
@@ -309,115 +346,132 @@ uint8_t* Epub::readItemContentsToBytes(const std::string& itemHref, size_t* size
 }

 bool Epub::readItemContentsToStream(const std::string& itemHref, Print& out, const size_t chunkSize) const {
-  const ZipFile zip("/sd" + filepath);
-  const std::string path = normalisePath(itemHref);
+  if (itemHref.empty()) {
+    Serial.printf("[%lu] [EBP] Failed to read item, empty href\n", millis());
+    return false;
+  }

-  return zip.readFileToStream(path.c_str(), out, chunkSize);
+  const std::string path = FsHelpers::normalisePath(itemHref);
+  return ZipFile(filepath).readFileToStream(path.c_str(), out, chunkSize);
 }

 bool Epub::getItemSize(const std::string& itemHref, size_t* size) const {
-  const ZipFile zip("/sd" + filepath);
-  return getItemSize(zip, itemHref, size);
+  const std::string path = FsHelpers::normalisePath(itemHref);
+  return ZipFile(filepath).getInflatedFileSize(path.c_str(), size);
 }

-bool Epub::getItemSize(const ZipFile& zip, const std::string& itemHref, size_t* size) {
-  const std::string path = normalisePath(itemHref);
-  return zip.getInflatedFileSize(path.c_str(), size);
-}
-
-int Epub::getSpineItemsCount() const { return spine.size(); }
-
-size_t Epub::getCumulativeSpineItemSize(const int spineIndex) const {
-  if (spineIndex < 0 || spineIndex >= static_cast<int>(cumulativeSpineItemSize.size())) {
-    Serial.printf("[%lu] [EBP] getCumulativeSpineItemSize index:%d is out of range\n", millis(), spineIndex);
+int Epub::getSpineItemsCount() const {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
    return 0;
  }
-  return cumulativeSpineItemSize.at(spineIndex);
+  return bookMetadataCache->getSpineCount();
 }

-std::string& Epub::getSpineItem(const int spineIndex) {
-  static std::string emptyString;
-  if (spine.empty()) {
-    Serial.printf("[%lu] [EBP] getSpineItem called but spine is empty\n", millis());
-    return emptyString;
+size_t Epub::getCumulativeSpineItemSize(const int spineIndex) const { return getSpineItem(spineIndex).cumulativeSize; }
+
+BookMetadataCache::SpineEntry Epub::getSpineItem(const int spineIndex) const {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    Serial.printf("[%lu] [EBP] getSpineItem called but cache not loaded\n", millis());
+    return {};
  }
-  if (spineIndex < 0 || spineIndex >= static_cast<int>(spine.size())) {
+
+  if (spineIndex < 0 || spineIndex >= bookMetadataCache->getSpineCount()) {
    Serial.printf("[%lu] [EBP] getSpineItem index:%d is out of range\n", millis(), spineIndex);
-    return spine.at(0).second;
+    return bookMetadataCache->getSpineEntry(0);
  }

-  return spine.at(spineIndex).second;
+  return bookMetadataCache->getSpineEntry(spineIndex);
 }

-EpubTocEntry& Epub::getTocItem(const int tocTndex) {
-  static EpubTocEntry emptyEntry = {};
-  if (toc.empty()) {
-    Serial.printf("[%lu] [EBP] getTocItem called but toc is empty\n", millis());
-    return emptyEntry;
-  }
-  if (tocTndex < 0 || tocTndex >= static_cast<int>(toc.size())) {
-    Serial.printf("[%lu] [EBP] getTocItem index:%d is out of range\n", millis(), tocTndex);
-    return toc.at(0);
+BookMetadataCache::TocEntry Epub::getTocItem(const int tocIndex) const {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    Serial.printf("[%lu] [EBP] getTocItem called but cache not loaded\n", millis());
+    return {};
  }

-  return toc.at(tocTndex);
+  if (tocIndex < 0 || tocIndex >= bookMetadataCache->getTocCount()) {
+    Serial.printf("[%lu] [EBP] getTocItem index:%d is out of range\n", millis(), tocIndex);
+    return {};
+  }
+
+  return bookMetadataCache->getTocEntry(tocIndex);
 }

-int Epub::getTocItemsCount() const { return toc.size(); }
+int Epub::getTocItemsCount() const {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    return 0;
+  }
+
+  return bookMetadataCache->getTocCount();
+}

 // work out the section index for a toc index
 int Epub::getSpineIndexForTocIndex(const int tocIndex) const {
-  if (tocIndex < 0 || tocIndex >= toc.size()) {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    Serial.printf("[%lu] [EBP] getSpineIndexForTocIndex called but cache not loaded\n", millis());
+    return 0;
+  }
+
+  if (tocIndex < 0 || tocIndex >= bookMetadataCache->getTocCount()) {
    Serial.printf("[%lu] [EBP] getSpineIndexForTocIndex: tocIndex %d out of range\n", millis(), tocIndex);
    return 0;
  }

-  // the toc entry should have an href that matches the spine item
-  // so we can find the spine index by looking for the href
-  for (int i = 0; i < spine.size(); i++) {
-    if (spine[i].second == toc[tocIndex].href) {
-      return i;
-    }
+  const int spineIndex = bookMetadataCache->getTocEntry(tocIndex).spineIndex;
+  if (spineIndex < 0) {
+    Serial.printf("[%lu] [EBP] Section not found for TOC index %d\n", millis(), tocIndex);
+    return 0;
  }

-  Serial.printf("[%lu] [EBP] Section not found\n", millis());
-  // not found - default to the start of the book
-  return 0;
+  return spineIndex;
 }

-int Epub::getTocIndexForSpineIndex(const int spineIndex) const {
-  if (spineIndex < 0 || spineIndex >= spine.size()) {
-    Serial.printf("[%lu] [EBP] getTocIndexForSpineIndex: spineIndex %d out of range\n", millis(), spineIndex);
-    return -1;
-  }
-
-  // the toc entry should have an href that matches the spine item
-  // so we can find the toc index by looking for the href
-  for (int i = 0; i < toc.size(); i++) {
-    if (toc[i].href == spine[spineIndex].second) {
-      return i;
-    }
-  }
-
-  Serial.printf("[%lu] [EBP] TOC item not found\n", millis());
-  return -1;
-}
+int Epub::getTocIndexForSpineIndex(const int spineIndex) const { return getSpineItem(spineIndex).tocIndex; }

 size_t Epub::getBookSize() const {
-  if (spine.empty()) {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded() || bookMetadataCache->getSpineCount() == 0) {
    return 0;
  }
  return getCumulativeSpineItemSize(getSpineItemsCount() - 1);
 }

+int Epub::getSpineIndexForTextReference() const {
+  if (!bookMetadataCache || !bookMetadataCache->isLoaded()) {
+    Serial.printf("[%lu] [EBP] getSpineIndexForTextReference called but cache not loaded\n", millis());
+    return 0;
+  }
+  Serial.printf("[%lu] [ERS] Core Metadata: cover(%d)=%s, textReference(%d)=%s\n", millis(),
+                bookMetadataCache->coreMetadata.coverItemHref.size(),
+                bookMetadataCache->coreMetadata.coverItemHref.c_str(),
+                bookMetadataCache->coreMetadata.textReferenceHref.size(),
+                bookMetadataCache->coreMetadata.textReferenceHref.c_str());
+
+  if (bookMetadataCache->coreMetadata.textReferenceHref.empty()) {
+    // there was no textReference in epub, so we return 0 (the first chapter)
+    return 0;
+  }
+
+  // loop through spine items to get the correct index matching the text href
+  for (size_t i = 0; i < getSpineItemsCount(); i++) {
+    if (getSpineItem(i).href == bookMetadataCache->coreMetadata.textReferenceHref) {
+      Serial.printf("[%lu] [ERS] Text reference %s found at index %d\n", millis(),
+                    bookMetadataCache->coreMetadata.textReferenceHref.c_str(), i);
+      return i;
+    }
+  }
+  // This should not happen, as we checked for empty textReferenceHref earlier
+  Serial.printf("[%lu] [EBP] Section not found for text reference\n", millis());
+  return 0;
+}
+
 // Calculate progress in book
-uint8_t Epub::calculateProgress(const int currentSpineIndex, const float currentSpineRead) {
-  size_t bookSize = getBookSize();
+uint8_t Epub::calculateProgress(const int currentSpineIndex, const float currentSpineRead) const {
+  const size_t bookSize = getBookSize();
  if (bookSize == 0) {
    return 0;
  }
-  size_t prevChapterSize = (currentSpineIndex >= 1) ? getCumulativeSpineItemSize(currentSpineIndex - 1) : 0;
-  size_t curChapterSize = getCumulativeSpineItemSize(currentSpineIndex) - prevChapterSize;
-  size_t sectionProgSize = currentSpineRead * curChapterSize;
+  const size_t prevChapterSize = (currentSpineIndex >= 1) ? getCumulativeSpineItemSize(currentSpineIndex - 1) : 0;
+  const size_t curChapterSize = getCumulativeSpineItemSize(currentSpineIndex) - prevChapterSize;
+  const size_t sectionProgSize = currentSpineRead * curChapterSize;
  return round(static_cast<float>(prevChapterSize + sectionProgSize) / bookSize * 100.0);
 }
@@ -1,39 +1,31 @@
 #pragma once
+
 #include <Print.h>

+#include <memory>
 #include <string>
 #include <unordered_map>
 #include <vector>

-#include "Epub/EpubTocEntry.h"
+#include "Epub/BookMetadataCache.h"

 class ZipFile;

 class Epub {
-  // the title read from the EPUB meta data
-  std::string title;
-  // the cover image
-  std::string coverImageItem;
  // the ncx file
  std::string tocNcxItem;
  // where is the EPUBfile?
  std::string filepath;
-  // the spine of the EPUB file
-  std::vector<std::pair<std::string, std::string>> spine;
-  // the file size of the spine items (proxy to book progress)
-  std::vector<size_t> cumulativeSpineItemSize;
-  // the toc of the EPUB file
-  std::vector<EpubTocEntry> toc;
  // the base path for items in the EPUB file
  std::string contentBasePath;
  // Uniq cache key based on filepath
  std::string cachePath;
+  // Spine and TOC cache
+  std::unique_ptr<BookMetadataCache> bookMetadataCache;

  bool findContentOpfFile(std::string* contentOpfFile) const;
-  bool parseContentOpf(const std::string& contentOpfFilePath);
-  bool parseTocNcxFile();
-  void initializeSpineItemSizes();
-  static bool getItemSize(const ZipFile& zip, const std::string& itemHref, size_t* size);
+  bool parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata);
+  bool parseTocNcxFile() const;

 public:
  explicit Epub(std::string filepath, const std::string& cacheDir) : filepath(std::move(filepath)) {
@@ -42,26 +34,28 @@ class Epub {
  }
  ~Epub() = default;
  std::string& getBasePath() { return contentBasePath; }
-  bool load();
+  bool load(bool buildIfMissing = true);
  bool clearCache() const;
  void setupCacheDir() const;
  const std::string& getCachePath() const;
  const std::string& getPath() const;
  const std::string& getTitle() const;
+  const std::string& getAuthor() const;
  std::string getCoverBmpPath() const;
  bool generateCoverBmp() const;
  uint8_t* readItemContentsToBytes(const std::string& itemHref, size_t* size = nullptr,
                                   bool trailingNullByte = false) const;
  bool readItemContentsToStream(const std::string& itemHref, Print& out, size_t chunkSize) const;
  bool getItemSize(const std::string& itemHref, size_t* size) const;
-  std::string& getSpineItem(int spineIndex);
+  BookMetadataCache::SpineEntry getSpineItem(int spineIndex) const;
+  BookMetadataCache::TocEntry getTocItem(int tocIndex) const;
  int getSpineItemsCount() const;
-  size_t getCumulativeSpineItemSize(const int spineIndex) const;
-  EpubTocEntry& getTocItem(int tocIndex);
  int getTocItemsCount() const;
  int getSpineIndexForTocIndex(int tocIndex) const;
  int getTocIndexForSpineIndex(int spineIndex) const;
+  size_t getCumulativeSpineItemSize(int spineIndex) const;
+  int getSpineIndexForTextReference() const;

  size_t getBookSize() const;
-  uint8_t calculateProgress(const int currentSpineIndex, const float currentSpineRead);
+  uint8_t calculateProgress(int currentSpineIndex, float currentSpineRead) const;
 };
@@ -0,0 +1,354 @@
+#include "BookMetadataCache.h"
+
+#include <HardwareSerial.h>
+#include <Serialization.h>
+#include <ZipFile.h>
+
+#include <vector>
+
+#include "FsHelpers.h"
+
+namespace {
+constexpr uint8_t BOOK_CACHE_VERSION = 3;
+constexpr char bookBinFile[] = "/book.bin";
+constexpr char tmpSpineBinFile[] = "/spine.bin.tmp";
+constexpr char tmpTocBinFile[] = "/toc.bin.tmp";
+}  // namespace
+
+/* ============= WRITING / BUILDING FUNCTIONS ================ */
+
+bool BookMetadataCache::beginWrite() {
+  buildMode = true;
+  spineCount = 0;
+  tocCount = 0;
+  Serial.printf("[%lu] [BMC] Entering write mode\n", millis());
+  return true;
+}
+
+bool BookMetadataCache::beginContentOpfPass() {
+  Serial.printf("[%lu] [BMC] Beginning content opf pass\n", millis());
+
+  // Open spine file for writing
+  return SdMan.openFileForWrite("BMC", cachePath + tmpSpineBinFile, spineFile);
+}
+
+bool BookMetadataCache::endContentOpfPass() {
+  spineFile.close();
+  return true;
+}
+
+bool BookMetadataCache::beginTocPass() {
+  Serial.printf("[%lu] [BMC] Beginning toc pass\n", millis());
+
+  // Open spine file for reading
+  if (!SdMan.openFileForRead("BMC", cachePath + tmpSpineBinFile, spineFile)) {
+    return false;
+  }
+  if (!SdMan.openFileForWrite("BMC", cachePath + tmpTocBinFile, tocFile)) {
+    spineFile.close();
+    return false;
+  }
+  return true;
+}
+
+bool BookMetadataCache::endTocPass() {
+  tocFile.close();
+  spineFile.close();
+  return true;
+}
+
+bool BookMetadataCache::endWrite() {
+  if (!buildMode) {
+    Serial.printf("[%lu] [BMC] endWrite called but not in build mode\n", millis());
+    return false;
+  }
+
+  buildMode = false;
+  Serial.printf("[%lu] [BMC] Wrote %d spine, %d TOC entries\n", millis(), spineCount, tocCount);
+  return true;
+}
+
+bool BookMetadataCache::buildBookBin(const std::string& epubPath, const BookMetadata& metadata) {
+  // Open all three files, writing to meta, reading from spine and toc
+  if (!SdMan.openFileForWrite("BMC", cachePath + bookBinFile, bookFile)) {
+    return false;
+  }
+
+  if (!SdMan.openFileForRead("BMC", cachePath + tmpSpineBinFile, spineFile)) {
+    bookFile.close();
+    return false;
+  }
+
+  if (!SdMan.openFileForRead("BMC", cachePath + tmpTocBinFile, tocFile)) {
+    bookFile.close();
+    spineFile.close();
+    return false;
+  }
+
+  constexpr uint32_t headerASize =
+      sizeof(BOOK_CACHE_VERSION) + /* LUT Offset */ sizeof(uint32_t) + sizeof(spineCount) + sizeof(tocCount);
+  const uint32_t metadataSize = metadata.title.size() + metadata.author.size() + metadata.coverItemHref.size() +
+                                metadata.textReferenceHref.size() + sizeof(uint32_t) * 4;
+  const uint32_t lutSize = sizeof(uint32_t) * spineCount + sizeof(uint32_t) * tocCount;
+  const uint32_t lutOffset = headerASize + metadataSize;
+
+  // Header A
+  serialization::writePod(bookFile, BOOK_CACHE_VERSION);
+  serialization::writePod(bookFile, lutOffset);
+  serialization::writePod(bookFile, spineCount);
+  serialization::writePod(bookFile, tocCount);
+  // Metadata
+  serialization::writeString(bookFile, metadata.title);
+  serialization::writeString(bookFile, metadata.author);
+  serialization::writeString(bookFile, metadata.coverItemHref);
+  serialization::writeString(bookFile, metadata.textReferenceHref);
+
+  // Loop through spine entries, writing LUT positions
+  spineFile.seek(0);
+  for (int i = 0; i < spineCount; i++) {
+    uint32_t pos = spineFile.position();
+    auto spineEntry = readSpineEntry(spineFile);
+    serialization::writePod(bookFile, pos + lutOffset + lutSize);
+  }
+
+  // Loop through toc entries, writing LUT positions
+  tocFile.seek(0);
+  for (int i = 0; i < tocCount; i++) {
+    uint32_t pos = tocFile.position();
+    auto tocEntry = readTocEntry(tocFile);
+    serialization::writePod(bookFile, pos + lutOffset + lutSize + static_cast<uint32_t>(spineFile.position()));
+  }
+
+  // LUTs complete
+  // Loop through spines from spine file matching up TOC indexes, calculating cumulative size and writing to book.bin
+
+  ZipFile zip(epubPath);
+  // Pre-open zip file to speed up size calculations
+  if (!zip.open()) {
+    Serial.printf("[%lu] [BMC] Could not open EPUB zip for size calculations\n", millis());
+    bookFile.close();
+    spineFile.close();
+    tocFile.close();
+    return false;
+  }
+  // TODO: For large ZIPs loading the all localHeaderOffsets will crash.
+  //       However not having them loaded is extremely slow. Need a better solution here.
+  //       Perhaps only a cache of spine items or a better way to speedup lookups?
+  if (!zip.loadAllFileStatSlims()) {
+    Serial.printf("[%lu] [BMC] Could not load zip local header offsets for size calculations\n", millis());
+    bookFile.close();
+    spineFile.close();
+    tocFile.close();
+    zip.close();
+    return false;
+  }
+  uint32_t cumSize = 0;
+  spineFile.seek(0);
+  int lastSpineTocIndex = -1;
+  for (int i = 0; i < spineCount; i++) {
+    auto spineEntry = readSpineEntry(spineFile);
+
+    tocFile.seek(0);
+    for (int j = 0; j < tocCount; j++) {
+      auto tocEntry = readTocEntry(tocFile);
+      if (tocEntry.spineIndex == i) {
+        spineEntry.tocIndex = j;
+        break;
+      }
+    }
+
+    // Not a huge deal if we don't fine a TOC entry for the spine entry, this is expected behaviour for EPUBs
+    // Logging here is for debugging
+    if (spineEntry.tocIndex == -1) {
+      Serial.printf(
+          "[%lu] [BMC] Warning: Could not find TOC entry for spine item %d: %s, using title from last section\n",
+          millis(), i, spineEntry.href.c_str());
+      spineEntry.tocIndex = lastSpineTocIndex;
+    }
+    lastSpineTocIndex = spineEntry.tocIndex;
+
+    // Calculate size for cumulative size
+    size_t itemSize = 0;
+    const std::string path = FsHelpers::normalisePath(spineEntry.href);
+    if (zip.getInflatedFileSize(path.c_str(), &itemSize)) {
+      cumSize += itemSize;
+      spineEntry.cumulativeSize = cumSize;
+    } else {
+      Serial.printf("[%lu] [BMC] Warning: Could not get size for spine item: %s\n", millis(), path.c_str());
+    }
+
+    // Write out spine data to book.bin
+    writeSpineEntry(bookFile, spineEntry);
+  }
+  // Close opened zip file
+  zip.close();
+
+  // Loop through toc entries from toc file writing to book.bin
+  tocFile.seek(0);
+  for (int i = 0; i < tocCount; i++) {
+    auto tocEntry = readTocEntry(tocFile);
+    writeTocEntry(bookFile, tocEntry);
+  }
+
+  bookFile.close();
+  spineFile.close();
+  tocFile.close();
+
+  Serial.printf("[%lu] [BMC] Successfully built book.bin\n", millis());
+  return true;
+}
+
+bool BookMetadataCache::cleanupTmpFiles() const {
+  if (SdMan.exists((cachePath + tmpSpineBinFile).c_str())) {
+    SdMan.remove((cachePath + tmpSpineBinFile).c_str());
+  }
+  if (SdMan.exists((cachePath + tmpTocBinFile).c_str())) {
+    SdMan.remove((cachePath + tmpTocBinFile).c_str());
+  }
+  return true;
+}
+
+uint32_t BookMetadataCache::writeSpineEntry(FsFile& file, const SpineEntry& entry) const {
+  const uint32_t pos = file.position();
+  serialization::writeString(file, entry.href);
+  serialization::writePod(file, entry.cumulativeSize);
+  serialization::writePod(file, entry.tocIndex);
+  return pos;
+}
+
+uint32_t BookMetadataCache::writeTocEntry(FsFile& file, const TocEntry& entry) const {
+  const uint32_t pos = file.position();
+  serialization::writeString(file, entry.title);
+  serialization::writeString(file, entry.href);
+  serialization::writeString(file, entry.anchor);
+  serialization::writePod(file, entry.level);
+  serialization::writePod(file, entry.spineIndex);
+  return pos;
+}
+
+// Note: for the LUT to be accurate, this **MUST** be called for all spine items before `addTocEntry` is ever called
+// this is because in this function we're marking positions of the items
+void BookMetadataCache::createSpineEntry(const std::string& href) {
+  if (!buildMode || !spineFile) {
+    Serial.printf("[%lu] [BMC] createSpineEntry called but not in build mode\n", millis());
+    return;
+  }
+
+  const SpineEntry entry(href, 0, -1);
+  writeSpineEntry(spineFile, entry);
+  spineCount++;
+}
+
+void BookMetadataCache::createTocEntry(const std::string& title, const std::string& href, const std::string& anchor,
+                                       const uint8_t level) {
+  if (!buildMode || !tocFile || !spineFile) {
+    Serial.printf("[%lu] [BMC] createTocEntry called but not in build mode\n", millis());
+    return;
+  }
+
+  int spineIndex = -1;
+  // find spine index
+  // TODO: This lookup is slow as need to scan through all items each time. We can't hold it all in memory due to size.
+  //       But perhaps we can load just the hrefs in a vector/list to do an index lookup?
+  spineFile.seek(0);
+  for (int i = 0; i < spineCount; i++) {
+    auto spineEntry = readSpineEntry(spineFile);
+    if (spineEntry.href == href) {
+      spineIndex = i;
+      break;
+    }
+  }
+
+  if (spineIndex == -1) {
+    Serial.printf("[%lu] [BMC] addTocEntry: Could not find spine item for TOC href %s\n", millis(), href.c_str());
+  }
+
+  const TocEntry entry(title, href, anchor, level, spineIndex);
+  writeTocEntry(tocFile, entry);
+  tocCount++;
+}
+
+/* ============= READING / LOADING FUNCTIONS ================ */
+
+bool BookMetadataCache::load() {
+  if (!SdMan.openFileForRead("BMC", cachePath + bookBinFile, bookFile)) {
+    return false;
+  }
+
+  uint8_t version;
+  serialization::readPod(bookFile, version);
+  if (version != BOOK_CACHE_VERSION) {
+    Serial.printf("[%lu] [BMC] Cache version mismatch: expected %d, got %d\n", millis(), BOOK_CACHE_VERSION, version);
+    bookFile.close();
+    return false;
+  }
+
+  serialization::readPod(bookFile, lutOffset);
+  serialization::readPod(bookFile, spineCount);
+  serialization::readPod(bookFile, tocCount);
+
+  serialization::readString(bookFile, coreMetadata.title);
+  serialization::readString(bookFile, coreMetadata.author);
+  serialization::readString(bookFile, coreMetadata.coverItemHref);
+  serialization::readString(bookFile, coreMetadata.textReferenceHref);
+
+  loaded = true;
+  Serial.printf("[%lu] [BMC] Loaded cache data: %d spine, %d TOC entries\n", millis(), spineCount, tocCount);
+  return true;
+}
+
+BookMetadataCache::SpineEntry BookMetadataCache::getSpineEntry(const int index) {
+  if (!loaded) {
+    Serial.printf("[%lu] [BMC] getSpineEntry called but cache not loaded\n", millis());
+    return {};
+  }
+
+  if (index < 0 || index >= static_cast<int>(spineCount)) {
+    Serial.printf("[%lu] [BMC] getSpineEntry index %d out of range\n", millis(), index);
+    return {};
+  }
+
+  // Seek to spine LUT item, read from LUT and get out data
+  bookFile.seek(lutOffset + sizeof(uint32_t) * index);
+  uint32_t spineEntryPos;
+  serialization::readPod(bookFile, spineEntryPos);
+  bookFile.seek(spineEntryPos);
+  return readSpineEntry(bookFile);
+}
+
+BookMetadataCache::TocEntry BookMetadataCache::getTocEntry(const int index) {
+  if (!loaded) {
+    Serial.printf("[%lu] [BMC] getTocEntry called but cache not loaded\n", millis());
+    return {};
+  }
+
+  if (index < 0 || index >= static_cast<int>(tocCount)) {
+    Serial.printf("[%lu] [BMC] getTocEntry index %d out of range\n", millis(), index);
+    return {};
+  }
+
+  // Seek to TOC LUT item, read from LUT and get out data
+  bookFile.seek(lutOffset + sizeof(uint32_t) * spineCount + sizeof(uint32_t) * index);
+  uint32_t tocEntryPos;
+  serialization::readPod(bookFile, tocEntryPos);
+  bookFile.seek(tocEntryPos);
+  return readTocEntry(bookFile);
+}
+
+BookMetadataCache::SpineEntry BookMetadataCache::readSpineEntry(FsFile& file) const {
+  SpineEntry entry;
+  serialization::readString(file, entry.href);
+  serialization::readPod(file, entry.cumulativeSize);
+  serialization::readPod(file, entry.tocIndex);
+  return entry;
+}
+
+BookMetadataCache::TocEntry BookMetadataCache::readTocEntry(FsFile& file) const {
+  TocEntry entry;
+  serialization::readString(file, entry.title);
+  serialization::readString(file, entry.href);
+  serialization::readString(file, entry.anchor);
+  serialization::readPod(file, entry.level);
+  serialization::readPod(file, entry.spineIndex);
+  return entry;
+}
@@ -0,0 +1,88 @@
+#pragma once
+
+#include <SDCardManager.h>
+
+#include <string>
+
+class BookMetadataCache {
+ public:
+  struct BookMetadata {
+    std::string title;
+    std::string author;
+    std::string coverItemHref;
+    std::string textReferenceHref;
+  };
+
+  struct SpineEntry {
+    std::string href;
+    size_t cumulativeSize;
+    int16_t tocIndex;
+
+    SpineEntry() : cumulativeSize(0), tocIndex(-1) {}
+    SpineEntry(std::string href, const size_t cumulativeSize, const int16_t tocIndex)
+        : href(std::move(href)), cumulativeSize(cumulativeSize), tocIndex(tocIndex) {}
+  };
+
+  struct TocEntry {
+    std::string title;
+    std::string href;
+    std::string anchor;
+    uint8_t level;
+    int16_t spineIndex;
+
+    TocEntry() : level(0), spineIndex(-1) {}
+    TocEntry(std::string title, std::string href, std::string anchor, const uint8_t level, const int16_t spineIndex)
+        : title(std::move(title)),
+          href(std::move(href)),
+          anchor(std::move(anchor)),
+          level(level),
+          spineIndex(spineIndex) {}
+  };
+
+ private:
+  std::string cachePath;
+  size_t lutOffset;
+  uint16_t spineCount;
+  uint16_t tocCount;
+  bool loaded;
+  bool buildMode;
+
+  FsFile bookFile;
+  // Temp file handles during build
+  FsFile spineFile;
+  FsFile tocFile;
+
+  uint32_t writeSpineEntry(FsFile& file, const SpineEntry& entry) const;
+  uint32_t writeTocEntry(FsFile& file, const TocEntry& entry) const;
+  SpineEntry readSpineEntry(FsFile& file) const;
+  TocEntry readTocEntry(FsFile& file) const;
+
+ public:
+  BookMetadata coreMetadata;
+
+  explicit BookMetadataCache(std::string cachePath)
+      : cachePath(std::move(cachePath)), lutOffset(0), spineCount(0), tocCount(0), loaded(false), buildMode(false) {}
+  ~BookMetadataCache() = default;
+
+  // Building phase (stream to disk immediately)
+  bool beginWrite();
+  bool beginContentOpfPass();
+  void createSpineEntry(const std::string& href);
+  bool endContentOpfPass();
+  bool beginTocPass();
+  void createTocEntry(const std::string& title, const std::string& href, const std::string& anchor, uint8_t level);
+  bool endTocPass();
+  bool endWrite();
+  bool cleanupTmpFiles() const;
+
+  // Post-processing to update mappings and sizes
+  bool buildBookBin(const std::string& epubPath, const BookMetadata& metadata);
+
+  // Reading phase (read mode)
+  bool load();
+  SpineEntry getSpineEntry(int index);
+  TocEntry getTocEntry(int index);
+  int getSpineCount() const { return spineCount; }
+  int getTocCount() const { return tocCount; }
+  bool isLoaded() const { return loaded; }
+};
@@ -1,10 +0,0 @@
-#pragma once
-
-#include <string>
-
-struct EpubTocEntry {
-  std::string title;
-  std::string href;
-  std::string anchor;
-  uint8_t level;
-};
@@ -1,36 +0,0 @@
-#include "FsHelpers.h"
-
-#include <SD.h>
-
-bool FsHelpers::removeDir(const char* path) {
-  // 1. Open the directory
-  File dir = SD.open(path);
-  if (!dir) {
-    return false;
-  }
-  if (!dir.isDirectory()) {
-    return false;
-  }
-
-  File file = dir.openNextFile();
-  while (file) {
-    String filePath = path;
-    if (!filePath.endsWith("/")) {
-      filePath += "/";
-    }
-    filePath += file.name();
-
-    if (file.isDirectory()) {
-      if (!removeDir(filePath.c_str())) {
-        return false;
-      }
-    } else {
-      if (!SD.remove(filePath.c_str())) {
-        return false;
-      }
-    }
-    file = dir.openNextFile();
-  }
-
-  return SD.rmdir(path);
-}
@@ -1,6 +0,0 @@
-#pragma once
-
-class FsHelpers {
- public:
-  static bool removeDir(const char* path);
-};
@@ -3,68 +3,61 @@
 #include <HardwareSerial.h>
 #include <Serialization.h>

-namespace {
-constexpr uint8_t PAGE_FILE_VERSION = 3;
+void PageLine::render(GfxRenderer& renderer, const int fontId, const int xOffset, const int yOffset) {
+  block->render(renderer, fontId, xPos + xOffset, yPos + yOffset);
 }

-void PageLine::render(GfxRenderer& renderer, const int fontId) { block->render(renderer, fontId, xPos, yPos); }
-
-void PageLine::serialize(std::ostream& os) {
-  serialization::writePod(os, xPos);
-  serialization::writePod(os, yPos);
+bool PageLine::serialize(FsFile& file) {
+  serialization::writePod(file, xPos);
+  serialization::writePod(file, yPos);

  // serialize TextBlock pointed to by PageLine
-  block->serialize(os);
+  return block->serialize(file);
 }

-std::unique_ptr<PageLine> PageLine::deserialize(std::istream& is) {
+std::unique_ptr<PageLine> PageLine::deserialize(FsFile& file) {
  int16_t xPos;
  int16_t yPos;
-  serialization::readPod(is, xPos);
-  serialization::readPod(is, yPos);
+  serialization::readPod(file, xPos);
+  serialization::readPod(file, yPos);

-  auto tb = TextBlock::deserialize(is);
+  auto tb = TextBlock::deserialize(file);
  return std::unique_ptr<PageLine>(new PageLine(std::move(tb), xPos, yPos));
 }

-void Page::render(GfxRenderer& renderer, const int fontId) const {
+void Page::render(GfxRenderer& renderer, const int fontId, const int xOffset, const int yOffset) const {
  for (auto& element : elements) {
-    element->render(renderer, fontId);
+    element->render(renderer, fontId, xOffset, yOffset);
  }
 }

-void Page::serialize(std::ostream& os) const {
-  serialization::writePod(os, PAGE_FILE_VERSION);
-
+bool Page::serialize(FsFile& file) const {
  const uint32_t count = elements.size();
-  serialization::writePod(os, count);
+  serialization::writePod(file, count);

  for (const auto& el : elements) {
    // Only PageLine exists currently
-    serialization::writePod(os, static_cast<uint8_t>(TAG_PageLine));
-    el->serialize(os);
+    serialization::writePod(file, static_cast<uint8_t>(TAG_PageLine));
+    if (!el->serialize(file)) {
+      return false;
+    }
  }
+
+  return true;
 }

-std::unique_ptr<Page> Page::deserialize(std::istream& is) {
-  uint8_t version;
-  serialization::readPod(is, version);
-  if (version != PAGE_FILE_VERSION) {
-    Serial.printf("[%lu] [PGE] Deserialization failed: Unknown version %u\n", millis(), version);
-    return nullptr;
-  }
-
+std::unique_ptr<Page> Page::deserialize(FsFile& file) {
  auto page = std::unique_ptr<Page>(new Page());

  uint32_t count;
-  serialization::readPod(is, count);
+  serialization::readPod(file, count);

  for (uint32_t i = 0; i < count; i++) {
    uint8_t tag;
-    serialization::readPod(is, tag);
+    serialization::readPod(file, tag);

    if (tag == TAG_PageLine) {
-      auto pl = PageLine::deserialize(is);
+      auto pl = PageLine::deserialize(file);
      page->elements.push_back(std::move(pl));
    } else {
      Serial.printf("[%lu] [PGE] Deserialization failed: Unknown tag %u\n", millis(), tag);
@@ -1,4 +1,6 @@
 #pragma once
+#include <SdFat.h>
+
 #include <utility>
 #include <vector>

@@ -15,8 +17,8 @@ class PageElement {
  int16_t yPos;
  explicit PageElement(const int16_t xPos, const int16_t yPos) : xPos(xPos), yPos(yPos) {}
  virtual ~PageElement() = default;
-  virtual void render(GfxRenderer& renderer, int fontId) = 0;
-  virtual void serialize(std::ostream& os) = 0;
+  virtual void render(GfxRenderer& renderer, int fontId, int xOffset, int yOffset) = 0;
+  virtual bool serialize(FsFile& file) = 0;
 };

 // a line from a block element
@@ -26,16 +28,16 @@ class PageLine final : public PageElement {
 public:
  PageLine(std::shared_ptr<TextBlock> block, const int16_t xPos, const int16_t yPos)
      : PageElement(xPos, yPos), block(std::move(block)) {}
-  void render(GfxRenderer& renderer, int fontId) override;
-  void serialize(std::ostream& os) override;
-  static std::unique_ptr<PageLine> deserialize(std::istream& is);
+  void render(GfxRenderer& renderer, int fontId, int xOffset, int yOffset) override;
+  bool serialize(FsFile& file) override;
+  static std::unique_ptr<PageLine> deserialize(FsFile& file);
 };

 class Page {
 public:
  // the list of block index and line numbers on this page
  std::vector<std::shared_ptr<PageElement>> elements;
-  void render(GfxRenderer& renderer, int fontId) const;
-  void serialize(std::ostream& os) const;
-  static std::unique_ptr<Page> deserialize(std::istream& is);
+  void render(GfxRenderer& renderer, int fontId, int xOffset, int yOffset) const;
+  bool serialize(FsFile& file) const;
+  static std::unique_ptr<Page> deserialize(FsFile& file);
 };
--- a/Show More
+++ b/Show More