Andrew Kesterson
17e6e04c79
akbasic needs the advance width of one character cell to build a terminal-style
text surface, and the wrapped size to know where a string crosses the right
margin. akgl_text_measure and akgl_text_measure_wrapped report both over
TTF_GetStringSize and TTF_GetStringSizeWrapped; neither needs a renderer, so
this half of the text subsystem is testable without the offscreen harness.
A negative wrap length is refused with AKERR_OUTOFBOUNDS: SDL_ttf reads it as a
very large unsigned width and quietly stops wrapping, which would return a
measurement that is wrong rather than an error the caller can see.
Also fixes akgl_text_loadfont, which checked name twice and passed an unchecked
filepath to TTF_OpenFont (TODO item 39).
The fixture font is a 10 KB monospaced ASCII subset of Liberation Mono, renamed
because "Liberation" is a Reserved Font Name; see
tests/assets/akgl_test_mono.LICENSE.txt. Monospaced so the suite can assert
width("AAAA") == 4 * width("A") rather than hardcode glyph metrics.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
122 lines
5.3 KiB
Plaintext
122 lines
5.3 KiB
Plaintext
tests/assets/akgl_test_mono.ttf
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================================
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A subset of Liberation Mono Regular, cut down to printable ASCII (U+0020 to
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U+007E) so the text suite has a font fixture that is 10 KB rather than 320 KB.
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It is monospaced, which is what the measurement tests rely on: the width of an
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N-character string is exactly N times the width of one character, in any font
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size, so the assertions do not have to hardcode glyph metrics.
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Generated with:
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pyftsubset /usr/share/fonts/truetype/liberation/LiberationMono-Regular.ttf \
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--unicodes=U+0020-007E --layout-features='' --no-hinting \
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--desubroutinize --name-IDs='*' --output-file=akgl_test_mono.ttf
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then renamed to "AKGL Test Mono" through the fontTools name table. The rename is
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required, not cosmetic: "Liberation" is a Reserved Font Name under the license
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below, and a modified copy may not carry it.
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Copyright (c) 2012 Red Hat, Inc. with Reserved Font Name Liberation.
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Digitized data copyright (c) 2010 Google Corporation with Reserved Font Arimo,
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Tinos and Cousine.
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Licensed under the SIL Open Font License, Version 1.1, reproduced in full below.
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This Font Software is licensed under the SIL Open Font License,
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Version 1.1.
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This license is copied below, and is also available with a FAQ at:
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http://scripts.sil.org/OFL
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SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
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PREAMBLE The goals of the Open Font License (OFL) are to stimulate
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worldwide development of collaborative font projects, to support the font
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creation efforts of academic and linguistic communities, and to provide
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a free and open framework in which fonts may be shared and improved in
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partnership with others.
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The OFL allows the licensed fonts to be used, studied, modified and
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redistributed freely as long as they are not sold by themselves.
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The fonts, including any derivative works, can be bundled, embedded,
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redistributed and/or sold with any software provided that any reserved
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names are not used by derivative works. The fonts and derivatives,
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however, cannot be released under any other type of license. The
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requirement for fonts to remain under this license does not apply to
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any document created using the fonts or their derivatives.
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DEFINITIONS
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"Font Software" refers to the set of files released by the Copyright
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Holder(s) under this license and clearly marked as such.
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This may include source files, build scripts and documentation.
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"Reserved Font Name" refers to any names specified as such after the
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copyright statement(s).
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"Original Version" refers to the collection of Font Software components
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as distributed by the Copyright Holder(s).
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"Modified Version" refers to any derivative made by adding to, deleting,
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or substituting ? in part or in whole ?
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any of the components of the Original Version, by changing formats or
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by porting the Font Software to a new environment.
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"Author" refers to any designer, engineer, programmer, technical writer
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or other person who contributed to the Font Software.
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PERMISSION & CONDITIONS
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of the Font Software, to use, study, copy, merge, embed, modify,
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redistribute, and sell modified and unmodified copies of the Font
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Software, subject to the following conditions:
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1) Neither the Font Software nor any of its individual components,in
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Original or Modified Versions, may be sold by itself.
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2) Original or Modified Versions of the Font Software may be bundled,
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redistributed and/or sold with any software, provided that each copy
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contains the above copyright notice and this license. These can be
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included either as stand-alone text files, human-readable headers or
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in the appropriate machine-readable metadata fields within text or
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binary files as long as those fields can be easily viewed by the user.
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3) No Modified Version of the Font Software may use the Reserved Font
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Name(s) unless explicit written permission is granted by the
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corresponding Copyright Holder. This restriction only applies to the
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primary font name as presented to the users.
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4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
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Software shall not be used to promote, endorse or advertise any
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Modified Version, except to acknowledge the contribution(s) of the
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Copyright Holder(s) and the Author(s) or with their explicit written
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permission.
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5) The Font Software, modified or unmodified, in part or in whole, must
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be distributed entirely under this license, and must not be distributed
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under any other license. The requirement for fonts to remain under
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this license does not apply to any document created using the Font
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Software.
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TERMINATION
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This license becomes null and void if any of the above conditions are not met.
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DISCLAIMER
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THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
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COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
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DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER
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DEALINGS IN THE FONT SOFTWARE.
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