diff options
Diffstat (limited to 'fonttools/fonttools_slides.py')
| -rwxr-xr-x | fonttools/fonttools_slides.py | 424 |
1 files changed, 344 insertions, 80 deletions
diff --git a/fonttools/fonttools_slides.py b/fonttools/fonttools_slides.py index a95d6de..1bebe92 100755 --- a/fonttools/fonttools_slides.py +++ b/fonttools/fonttools_slides.py @@ -23,9 +23,16 @@ # The more useful of them here are put_text, put_image, and # set_allocation. See their pydocs. +title_font="Cinzel" +head_font="Julius Sans One Bold" +body_font="Merriweather Sans Light" + slides = [] def slide_add(f, data=None, width=800, height=600): - #slides[:0] = [(f, data, width, height)] + if data is None: + data = {} + if "desc" not in data: + data['desc'] = body_font slides.append ((f, data, width, height)) return f @@ -39,6 +46,7 @@ whois = 0 def who(name): global whois whois = name + # And convenience functions to add a slide. Can be # used as a function decorator, or called directly. def slide_who(f, who, data=None): @@ -48,45 +56,28 @@ def slide_who(f, who, data=None): data = {} data['who'] = who return slide_add (f, data) + def slide(f, data=None): return slide_who (f, whois, data=data) -def slide_noone(f, data=None): + +def slide_heading(f, data=None): + if data is None: + data = {} + if 'desc' not in data: + data['desc'] = head_font if data and 'who' in data: return slide_who (f, data['who'], data=data) else: return slide_who (f, 0, data=data) -# -# Slides start here -# - -who (behdad) - -@slide -def title_slide (r): - r.move_to (400, 250) - r.put_text ("<b>FontTools</b>\n"+ - "<span font_desc='30'>"+ - "reviving an Open Source project &\n"+ - "<span strikethrough='true'>re</span>building a thriving community"+ - "</span>", valign=0, halign=0, desc="100") - - r.move_to (400, 550) - r.put_text ("""Behdad Esfahbod\n<span font_desc="monospace 16">behdad@google.com\nhttp://behdad.org</span>""", - desc="20", halign=0, valign=-1) - -def list_slide (l, data=None): +def bullet_list_slide (title, items): def s (r): - return '\n'.join (l) - #yield l[0] - #for i in l[1:]: - # yield '\n'+i - s.__name__ = l[0] + ts = "<span font_desc='"+head_font+"'>"+title+"</span>\n" + return ts + '\n'.join ("• " + item for item in items) + s.__name__ = title + data={'desc': body_font, 'align': pango.ALIGN_LEFT} slide (s, data) -slide_noone("History") -slide_noone("Where") - def image_slide (f, width=600, height=600, imgwidth=0, imgheight=0, xoffset=0, yoffset=0, data=None): def s (r): r.move_to (400+xoffset, 300+yoffset) @@ -105,33 +96,16 @@ def draw_image (r, f, width=600, height=600, imgwidth=0, imgheight=0, xoffset=0, y = (600 - height) * .5 r.set_allocation (x, y, width, height) -slide_noone("<b>Demo\ntime!</b>") - -# Demo! - -slide_noone("<b>Limitations</b>") -slide("Memory\nfootprint") -slide("Speed+memory\nfont-dependent") - -slide_noone("<b>Advantages</b>") -slide("Memory\nfootprint") -slide("Subpixel\npositioning") -slide("Pinch-to-zoom") - -list_slide ([ - "<b>Challenges</b>", - "• Shader size / complexity", - "• Pixel cost", - "• Conditionals", - "• Dependent texture lookups", - "• Variable loop iterations", - "• Interpolation accuracy", - ], data={'align': pango.ALIGN_LEFT}) - -def source_slide(s, lang="python"): +def source_slide(s, lang): s = highlight(s, lang) s = "<span font_desc='monospace'>" + s + "</span>" - slide_noone (s, data={'align': pango.ALIGN_LEFT}) + slide_heading (s, data={'align': pango.ALIGN_LEFT}) + +def python_slide(s): + source_slide(s, lang="py") + +def xml_slide(s): + source_slide(s, lang="xml") def patch_slide(s): lines = s.split ("\n") @@ -150,7 +124,7 @@ def patch_slide(s): s = '\n'.join (new_lines) s = "<span font_desc='monospace'>" + s + "</span>" - slide_noone (s, data={'align': pango.ALIGN_LEFT}) + slide_heading (s, data={'align': pango.ALIGN_LEFT}) def commit_slide(s, who=None): lines = s.split ("\n") @@ -166,31 +140,321 @@ def commit_slide(s, who=None): s = '\n'.join (new_lines) s = "<span font_desc='monospace'>" + s + "</span>" if who: - slide_noone (s, data={'align': pango.ALIGN_LEFT, 'who': who}) + slide_heading (s, data={'align': pango.ALIGN_LEFT, 'who': who}) else: - slide_noone (s, data={'align': pango.ALIGN_LEFT}) - -list_slide ([ - "<b>Code: libglyphy</b>", - "• ~400 lines *.h", - "• ~2500 lines *.cc *.hh", - "• ~370 lines *.glsl", - "• No dependencies", - ], data={'align': pango.ALIGN_LEFT}) -list_slide ([ - "<b>Code: glyphy-demo</b>", - "• ~2800 lines *.cc *.h", - "• ~150 lines *.glsl", - "• FreeType, GLUT", - ], data={'align': pango.ALIGN_LEFT}) -list_slide ([ - "<b>More work</b>", - "• Subpixel-rendering", - "• Anisotropic-antialiasing", - ], data={'align': pango.ALIGN_LEFT}) - -slide("<b>Gallery!</b>") -slide("<b>Q?</b>") + slide_heading (s, data={'align': pango.ALIGN_LEFT}) + + +# +# Slides start here +# + +who (behdad) + +@slide +def title_slide (r): + r.move_to (400, 250) + r.put_text ("<span font_desc='"+title_font+" bold'>FontTools</span>\n"+ + "<span font_desc='"+head_font+" 30'>"+ + "reviving an Open Source project,\n"+ + "<span strikethrough='true'>re</span>building a thriving community"+ + "</span>", valign=0, halign=0, desc=title_font+" 100") + + r.move_to (400, 550) + r.put_text ("""Behdad Esfahbod""", desc=body_font+" 20", 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='monospace' 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>", + ]) +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/", +]) + +bullet_list_slide("Future work", [ + "More font optimization", + "Better input: .fea / UFO", + "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", +]) + +slide("<b>Q?</b>", data={"desc":title_font}) +python_slide('') + +xml_slide(open("snippets/tofu.ttx").read()) if __name__ == "__main__": import slippy |