diff options
| author | Behdad Esfahbod <behdad@behdad.org> | 2016-05-10 11:42:56 +0200 |
|---|---|---|
| committer | Behdad Esfahbod <behdad@behdad.org> | 2016-05-10 11:42:56 +0200 |
| commit | a2ba8a8688546b428fa59e91de44ef881bcf03c4 (patch) | |
| tree | 77921705a6841fe47f3b842028d33a5cfe57cba2 | |
| parent | 8f97968459afe77a740001237e519366db58d533 (diff) | |
[opentype-gx] Flesh out
| -rwxr-xr-x | opentype-gx/opentypegx_slides.py | 436 | ||||
| -rw-r--r-- | opentype-gx/opentypegx_theme.py | 2 |
2 files changed, 146 insertions, 292 deletions
diff --git a/opentype-gx/opentypegx_slides.py b/opentype-gx/opentypegx_slides.py index 04ca317..bdc88e8 100755 --- a/opentype-gx/opentypegx_slides.py +++ b/opentype-gx/opentypegx_slides.py @@ -24,8 +24,9 @@ # set_allocation. See their pydocs. title_font="Impact" -head_font="Oswald Bold" -body_font="PT Sans" +subtitle_font="Oswald Bold" +head_font="sans Bold" # "Oswald Bold" +body_font="sans" # "PT Sans" mono_font="Consolas, monospace" slides = [] @@ -156,307 +157,160 @@ who (behdad) def title_slide (r): r.move_to (960, 400) r.put_text ("<span font_desc='"+title_font+"' font_size='large'>OpenType GX</span>\n"+ - "<span font_desc='"+head_font+"' font_size='xx-small'>an exploratory proposal</span>", + "<span font_desc='"+subtitle_font+"' font_size='xx-small'>an exploratory proposal</span>", valign=0, halign=0, desc=title_font+" 200") r.move_to (960, 800) r.put_text ("<span font_size='large' font_desc='"+mono_font+"' foreground='blue'>https://goo.gl/0N3zLy</span>\n\n"+ "Behdad Esfahbod\n<span font_size='x-small' font_desc='"+mono_font+"'>behdad@google.com</span>", desc=body_font+" 50", halign=0, valign=+1) -bullet_list_slide("History", [ - "Started in 1999ish", - "by Just van Rossum", - "of LettError fame", - "Slowed down by 2004", - "I picked it up last year"]) -bullet_list_slide("What is it?", [ - "Two things: TTX and fontTools", - "TTX converts fonts to XML and back", - "fontTools is a Python library", - "Font engineer's calculator", - "Closely reflecting OpenType tables", - "Minimum abstractions"]) - -slide_heading("TTX") -xml_slide(""" -<?xml version="1.0" encoding="utf-8"?> -<ttFont sfntVersion="\\x00\\x01\\x00\\x00" ttLibVersion="2.5"> - - <GlyphOrder> - <!-- The 'id' attribute is only for humans; it is ignored when parsed. --> - <GlyphID id="0" name=".notdef"/> - <GlyphID id="1" name="T"/> - <GlyphID id="2" name="X"/> - </GlyphOrder> - - <head> - <!-- Most of this table will be recalculated by the compiler --> - <tableVersion value="1.0"/> - <fontRevision value="1.001"/> - <checkSumAdjustment value="0x22ff1f02"/> - <magicNumber value="0x5f0f3cf5"/> - <flags value="00000000 00001011"/> - <unitsPerEm value="1000"/> - ... - </head> - - <hhea> - <tableVersion value="1.0"/> - <ascent value="863"/> - <descent value="-228"/> - <lineGap value="0"/> - ... - </hhea> -""") -xml_slide(""" - <maxp> - <!-- Most of this table will be recalculated by the compiler --> - <tableVersion value="0x10000"/> - <numGlyphs value="3"/> - <maxPoints value="68"/> - <maxContours value="7"/> - ... - </maxp> - - <OS_2> - <version value="3"/> - <xAvgCharWidth value="560"/> - <usWeightClass value="400"/> - <usWidthClass value="5"/> - <fsType value="00000000 00000000"/> - ... - </OS_2> -""") -xml_slide(""" - <hmtx> - <mtx name=".notdef" width="260" lsb="0"/> - <mtx name="T" width="576" lsb="22"/> - <mtx name="X" width="584" lsb="26"/> - </hmtx> - - <cmap> - <tableVersion version="0"/> - <cmap_format_4 platformID="3" platEncID="1" language="0"> - <map code="0x54" name="T"/><!-- LATIN CAPITAL LETTER T --> - <map code="0x58" name="X"/><!-- LATIN CAPITAL LETTER X --> - </cmap_format_4> - </cmap> - - <loca> - <!-- The 'loca' table will be calculated by the compiler --> - </loca> -""") -xml_slide(""" - <glyf> - - <!-- The xMin, yMin, xMax and yMax values - will be recalculated by the compiler. --> - - <TTGlyph name=".notdef"/><!-- contains no outline data --> - - <TTGlyph name="T" xMin="22" yMin="0" xMax="554" yMax="715"> - <contour> - <pt x="264" y="673" on="1"/> - <pt x="22" y="673" on="1"/> - <pt x="22" y="715" on="1"/> - <pt x="554" y="715" on="1"/> - <pt x="554" y="673" on="1"/> - <pt x="312" y="673" on="1"/> - <pt x="312" y="0" on="1"/> - <pt x="264" y="0" on="1"/> - </contour> - <instructions><assembly> - </assembly></instructions> - </TTGlyph> - - <TTGlyph name="X" xMin="26" yMin="0" xMax="558" yMax="715"> - ... - </TTGlyph> - - </glyf> -""") -xml_slide(""" - <name> - <namerecord nameID="1" platformID="3" platEncID="1" langID="0x409"> - Julius Sans One - </namerecord> - <namerecord nameID="2" platformID="3" platEncID="1" langID="0x409"> - Regular - </namerecord> - </name> - - <post> - <formatType value="3.0"/> - <italicAngle value="0.0"/> - <underlinePosition value="-75"/> - <underlineThickness value="50"/> - <isFixedPitch value="0"/> - <minMemType42 value="0"/> - <maxMemType42 value="0"/> - <minMemType1 value="0"/> - <maxMemType1 value="0"/> - </post> - -</ttFont> -""") - -slide_heading("fontTools") -bullet_list_slide("<span font_desc='"+mono_font+"' foreground='#080'>from <span foreground='#00f'><b>fontTools</b></span> import</span>", [ - "afmLib", - "cffLib", - "<span strikethrough='true'>fondLib</span>", - "<span strikethrough='true'>nfntLib</span>", - "t1Lib", - "<b>ttLib</b>", +def agenda(i=None): + items = [ + "Background", + "Architecture", + "Practicalities", + "Proposal", + "Implementation", + "Discussion" + ] + if i is not None: + i = items.index(i) + items[i] = "<span foreground='red'>%s</span>" % items[i] + bullet_list_slide("Agenda", items) + +agenda() + +agenda('Background') +bullet_list_slide("Background", [ + "ATypI 2014 Barcelona", + "Noto Phase III", + "FontTools + Sascha = gvar", + "FreeType + Adam = IUP", + "Skia graphics + Skia font", + "ATypI 2015: OpenType 2.0", + "OpenType GX, the proposal", ]) -python_slide(open("snippets/unencoded.py").read()) -python_slide(""" -set(['A.salt', - 'B.salt', - 'E.salt', - 'E_x', - 'F_i', - 'N.salt', - 'NULL', - 'T_h', - 'T_i', - 'a.end', - ... - 'y_z']) -""") - -bullet_list_slide("Framework", [ - "Compiler / decompiler", - "XML serialization", - "Optimizer", - "Library", - "A tool to build products with", - "Not an end product", -]) -bullet_list_slide("Philosophy", [ - "Minimal abstraction", - "Hide byte layout, redundancy, etc", - "Platform to build on", -]) -bullet_list_slide("Why?", [ - "Free Software", - "Python (2.7+ & 3.x)", - "Portable", - "No dependencies", - "Non-destructive", - "Batch-friendly", -]) -bullet_list_slide("What for?", [ - "Figuring out what's inside a font", - "Diff'ing font versions", - "Final steps of producing fonts", - "Hotfixing existing fonts", - "Reporting and analysis over <i>many</i> fonts", - "Server-side reporting and manipulation", - "Readable VCS-friendly font source code", - "Subsetting and merging fonts", -]) -bullet_list_slide("Hotfixing", [ - "XML and back", - "Python recipes", - "Interactive Python", -]) -python_slide(open("snippets/drop_glyphnames.py").read()) -python_slide(open("snippets/rename_glyphs.py").read()) - -bullet_list_slide("New work", [ - "Bitmap tables, color tables, misc tables", - "WOFF1 read and write", - "More stable XML format", - "More optimized font files", - "Bug fixes; many of them", - "Major speed-up", - "New tools", -]) -bullet_list_slide("Tools", [ - "pyftsubset", - "pyftmerge", - "pyftinspect", -]) -bullet_list_slide("pyftsubset", [ - "OpenType font subsetter & optimizer", - "TrueType and CFF flavored", - "SFNT and WOFF1", - "Full OpenType Layout support", - "File-size optimizations", - "Designed for webfont productions", - "Used for sub-family instantiation", -]) -source_slide(open("snippets/subsetting.txt").read(), "text") -bullet_list_slide("pyftmerge", [ - "Font merging tool", - "Very early prototype", - "Fonts having same format, upem", - "TrueType-flavored only", - "Retains hinting from one font", - "Handles conflicting characters", - "Designed for Noto", - "Used for merging Latin and non-Latin", -]) -source_slide(open("snippets/merging.txt").read(), "text") - -# 1. Feel free to mention in your talk Yannis Haralambous' book "Fonts & Encodings" [1], simply because it can be seen as a "user manual for TTX". It talks extensively about the various SFNT tables, and illustrates them using TTX XML structures. So, while fontTools itself has very lacking documentation*, the book is actually a great companion. When I read the book and I look at the .ttx XML representation of a font, I have good chances to actually understand how it all works. - -slide_heading("FontTools") -bullet_list_slide("Strengths", [ - "Supports wide array of tables", - "Low-level, non-destructive", - "Python", - "Self-documenting", - "Optimized output", - "Extensible", - "Supports all color tables", -]) -bullet_list_slide("Weaknesses", [ - "Supports wide array of tables", - "Low-level, non-destructive", - "Python", - "Undocumented", - "Always optimizes output", - "Not well-extensible", - "Supports many legacy tables", -]) -bullet_list_slide("Users", [ - "Google Fonts; misc foundries", - "Font Bakery, AFDKO, etc", - "Adam Twardoch; others", - "...", -]) -bullet_list_slide("Community", [ - "https://github.com/behdad/fonttools/", - "https://groups.google.com/forum/#!forum/fonttools", - "http://sourceforge.net/projects/fonttools/", -]) +agenda('Architecture') +bullet_list_slide("Architecture", [ + "MM vs TrueType GX", + "Copy some tables over", + "Possibly extend (later)", + "Extend OpenType tables", + ]) +bullet_list_slide("Architecture", [ + "Non-invasive", + "Existing workflows...\n" + " → Glyphs\n" + " → UFO+.designspace\n" + " → FontLab?" + ]) -bullet_list_slide("Future work", [ - "More font optimization", - "Better input: .fea / UFO", - "ttx2ufo", - "Lint tool", - "TrueType / CFF conversion", - "Subsetting more tables", - "Better merging", -]) -bullet_list_slide("Future work: optimization", [ - "Optimal packing: glyf flags / PUSH / etc", - "CFF outline operation specializer", - "CFF subroutinizer", - "TrueType outline optimizer? (fontcrunch)", - "TrueType bytecode analysis", - "UPEM reduction", +agenda('Practicalities') +bullet_list_slide("Practicalities", [ + "Overlap removal", + "Cubic-to-quadratic", + "CFF point numbers", + "Extrapolation", + ]) + +agenda('Proposal') +bullet_list_slide("Proposal", [ + "Font variation metadata", + "Glyph shape variation", + "Font metrics variation", + "Positioning variation", + "Conditional subst & pos", + "Glyph metrics variation", + "Hinting data variation", + ]) + +bullet_list_slide("Font var metadata", [ + "Apple 'fvar' table\n" + " → Arbitrary axes\n" + " → Named instances", + "Apple 'avar' table\n" + " → Luc(as) curve\n" + " → Pablo curve\n" + " → etc", + "Clarify standard axes", + ]) + +bullet_list_slide("Glyph shape var", [ + "Apple 'gvar' table\n" + " → Arbitrary masters\n" + " → per glyph", + "Apply to 'glyf' / CFF", + ]) + +bullet_list_slide("Font metrics var", [ + "Apple 'fmtx' table", + "'fmtx' 2.0 for OS/2, etc", + "No UPEM var allowed", + ]) + +bullet_list_slide("Positioning var", [ + "GPOS / GDEF", + "Value / Anchor / Caret", + "Device table\n" + " → VariationDevice", + "Merger script", + ]) + +bullet_list_slide("Condi'nal subst & pos", [ + "GSUB / GPOS", + "Alternate lookups\n" + " → MutatorMath subst\n" + " → Glyphs 'bracket' trick", + ]) + +bullet_list_slide("Glyph metrics var", [ + "Needed for layout", + "Performance", + "New table for\n" + " → 'hmtx' vars\n" + " → 'vmtx' vars\n" + " → 'VORG' vars", + ]) + +bullet_list_slide("Hinting: TrueType", [ + "Apple 'cvar' table", + "Extend ttfautohint", + "FreeType autohinter", + ]) +bullet_list_slide("Hinting: CFF", [ + "Hint op vars", + "Extend AFDKO autohinter", + "Run-time AFDKO hinter", + ]) + +agenda('Implementation') +bullet_list_slide("Implementation", [ + ]) +bullet_list_slide("", [ + ]) + +agenda('Discussion') +bullet_list_slide("Discussion", [ + ]) +bullet_list_slide("", [ + ]) + +bullet_list_slide("", [ + ]) + +agenda('Demos') + +#python_slide(open("snippets/drop_glyphnames.py").read()) +#source_slide(open("snippets/merging.txt").read(), "text") + +bullet_list_slide("Links", [ + "https://github.com/behdad/fonttools", + "https://github.com/googlei18n/fontmake", + "https://groups.google.com/forum/#!forum/fonttools", ]) slide("<b>Q?</b>", data={"desc":title_font}) -python_slide('') - -python_slide(open("snippets/drop_glyphnames_cff.py").read()) -xml_slide(open("snippets/tofu.ttx").read()) if __name__ == "__main__": import slippy diff --git a/opentype-gx/opentypegx_theme.py b/opentype-gx/opentypegx_theme.py index 2198ee5..9889193 100644 --- a/opentype-gx/opentypegx_theme.py +++ b/opentype-gx/opentypegx_theme.py @@ -20,7 +20,7 @@ import cairo avatar_margin = .10 logo_margin = .01 -footer_margin = .05 +footer_margin = .06 padding = .000 bubble_rad = .25 |