| 253320d25fccbb49621926d49dcf5ef64cf529c6 |
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29-Oct-2014 |
Raph Levien <raph@google.com> |
Move coverage bitmap from FontCollection to FontFamily
This will significantly reduce memory usage and also speed the creation
of new font families. In particular, the coverage bitmaps for the fonts
in the fallback stack will be computed once in the Zygote, rather than
separately in each app process.
Bug: 17756900
Change-Id: I66f5706bddd4658d78fe5b709f7251ca9d2ff4f8
/frameworks/minikin/include/minikin/FontCollection.h
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| 9a5f713add8cfb91ac2c9ed5c917309053201ab6 |
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07-Jun-2014 |
Raph Levien <raph@google.com> |
Support for fake bold and italics
This patch adds support for computing when fake bold and fake italics
are needed (because the styles are requested but not provided by the
matching FontFamily), and providing them as part of the layout result.
Part of the fix for bug 15436379 Fake bold doesn't fully work (Minikin)
Change-Id: I180c034b559837943673b5c272c8e890178dff0d
/frameworks/minikin/include/minikin/FontCollection.h
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| 89566f0ada1cafe673efa064cde38467990235d4 |
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06-Jun-2014 |
Raph Levien <raph@google.com> |
Add baseFont method to FontCollection
This patch adds a method to retrieve the base font from a
FontCollection, which is useful when querying global font metrics.
Part of the fix for bug 15467288 "Inconsistent line heights on
Minikin builds"
Change-Id: I268ae5128d0852a020d746bc22af81fc1a623228
/frameworks/minikin/include/minikin/FontCollection.h
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| 066e8575af64fb452617ac6005de6ccf6509553b |
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29-May-2014 |
Raph Levien <raph@google.com> |
Fix ZWJ not working for Indic fonts
This is a fix for bug 15185229 ZWJ not working in Sinhala and Kannada.
Indic fonts (unlike Arabic) require the entire string, including ZWJ,
to be passed to Harfbuzz; it's not enough for the ZWJ to be present in
the context. The solution is to be "sticky" in font itemization,
continuing to use the same font as long as it has Unicode coverage.
Change-Id: I7673bc56fbda09f1e1a4582e8d88342343b706f1
/frameworks/minikin/include/minikin/FontCollection.h
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| 7b221d97b7b64dc5ce457e19666d55d042e22e62 |
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27-May-2014 |
Raph Levien <raph@google.com> |
Language and variant selection
This patch adds a "lang" pseudo-CSS property and uses it both to select
an appropriate font and control the "locl" OpenType feature to get the
most appropriate rendering for the langauge and script. In addition,
the "-minikin-variant" property selects between "compact" and "elegant"
variants of a font, as the former is needed for vertically cramped
spaces.
This is part of the fix for bug 15179652 "Japanese font isn't shown on
LMP".
Change-Id: I7fab23c12d4c797a6d339a16e497b79a3afe9df1
/frameworks/minikin/include/minikin/FontCollection.h
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| 4d4e6bc8118d15542f1f2a9218f0f7a91a29474f |
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21-May-2014 |
Raph Levien <raph@google.com> |
Caching for layouts and harfbuzz faces
This patch adds caching for both layouts and for HarfBuzz face objects.
The granularity of the cache for layouts is words, so it splits the
input string at word boundaries (using a heuristic). There are is also
some refactoring to reduce the amount of allocation and copying, and
movement towards properly supporting contexts.
The size of the caches is a fixed number of entries; thus, it is
possible to consume a large amount of memory by filling the cache with
lots of large strings. This should be refined towards a scheme that
bounds the total memory used by the cache.
This patch fixes bug 15237293 "Regression: Measure performance is
significantly slower with minikin".
Change-Id: Ie8176857e2d78656ce5479a7c04969819ef2718d
/frameworks/minikin/include/minikin/FontCollection.h
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| b80c1f19c58b927820a8a24bf2218e5645724608 |
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06-May-2014 |
Raph Levien <raph@google.com> |
Better refcounting and locking
All major externally accessible objects (especially FontFamily and
FontCollection) are now reference counted. In addition, there is a
global lock intended to make operations thread-safe.
WIP notice: in this version of the patch, not all external API entry
points are protected by the lock. That should be fixed.
Change-Id: I14106196e99eb101e8bf1bcb4b81359759d2086c
/frameworks/minikin/include/minikin/FontCollection.h
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| bcc3dc5a2591a95a57e379e27cbad69c18e91e67 |
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23-May-2013 |
Raph Levien <raph@google.com> |
Introduce MinikinFont abstraction
This commit removes the direct dependency on FreeType and replaces it
with a MinikinFont abstraction, which is designed to support both
FreeType and Skia fonts (and possibly others in the future).
Also adds a "total advance" to the Layout, with an API for retrieving
it.
Change-Id: If20f92db9a43fd15b0fe9794b761ba00fb21338c
/frameworks/minikin/include/minikin/FontCollection.h
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| 9cc9bbe1461f359f0b27c5e7645c17dda001ab1d |
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24-Apr-2013 |
Raph Levien <raph@google.com> |
Initial commit of Minikin library
This is the initial draft of Minikin, a library intended to perform text
layout functions. This version does basic weight selection and font runs
for scripts, and also has a simple renderer for drawing into bitmaps,
but is lacking measurement, line breaking, and a number of other
important features. It also lacks caching and other performance
refinements.
Change-Id: I789a2e47d11d71202dc84b4751b51a5e2cd9c451
/frameworks/minikin/include/minikin/FontCollection.h
|