Grid fitting is performed only on glyph boundaries, since glyphs
include curves converted to pwl, which would be mangled by per-point
grid fitting.
Grid fitting is only performed when the plane in which text is
laid out is parallel to the viewing plane.
Grid fitting is only performed when rendering for display; there
are no devices with dpi low enough for grid fitting to become
profitable, and in any case we cannot predict what the dpi would
be anyway.
This font is less complete than our bitmap font, Unifont: Unifont
has essentially complete Unicode coverage and LibreCAD's font only
has Latin, Cyrillic and Japanese, but it can be extended rather
easily, so this should be fine for now.
These embedded fonts fatten glhelper.o quite a bit:
bitmapfont.table.h is about 8M in gzip-compressed bitmaps and
vectorfont.table.h is about 2M in raw vector data.
In spite of that it takes just around five seconds to build
glhelper.c on my laptop, so it should be fine.
The final executable grows from about 2M to about 8M, but this
is a small price to pay for fairly extensive i18n support.
The new font has somewhat different metrics, so the rendering
code has been fudged to make it look good.
Now it is possible to give non-ASCII names to groups
as well as see non-ASCII filenames of imported files.
In the future this makes localization possible.
This works for LTR languages, such as European and CJK,
but not RTL such as Arabic. Does Arabic even exist in
monospaced form? I have no idea.
After this change, SolveSpace does not contain nonfree assets.
Additionally, Perl is not required for the build.
Note that in the US, case law suggests that copyright does
not apply to bitmap fonts:
http://www.renpy.org/wiki/renpy/misc/Bitmap_Fonts_and_Copyright
Nevertheless, it was prudent to replace the asset with something
that is unambiguously free.
As a side effect, zlib and libpng are now git submodules,
based on their respective official git repositories.
This is necessary, because MinGW has a different ABI and
it cannot use the prebuilt binaries built by MSVC.
The submodules are also used for Windows, for several reasons:
* to allow 64-bit builds;
* to allow using newer MSVC, which doesn't like the prebuilt
libraries;
* to keep the libraries updated.
This change comprehensively replaces the use of Microsoft-standard integer
and boolean types with their C99/C++ standard equivalents, as the latter is
more appropriate for a cross-platform application. With matter-of-course
exceptions in the Win32-specific code, the types/values have been converted
as follows:
QWORD --> uint64_t
SQWORD --> int64_t
DWORD --> uint32_t
SDWORD --> int32_t
WORD --> uint16_t
SWORD --> int16_t
BYTE --> uint8_t
BOOL --> bool
TRUE --> true
FALSE --> false
The following related changes are also included:
* Added C99 integer type definitions for Windows, as stdint.h is not
available prior to Visual Studio 2010
* Changed types of some variables in the SolveSpace class from 'int' to
'bool', as they actually represent boolean settings
* Implemented new Cnf{Freeze,Thaw}Bool() functions to support boolean
variables in the Registry
* Cnf{Freeze,Thaw}DWORD() are now Cnf{Freeze,Thaw}Int()
* TtfFont::Get{WORD,DWORD}() are now TtfFont::Get{USHORT,ULONG}() (names
inspired by the OpenType spec)
* RGB colors are packed into an integer of type uint32_t (nee DWORD), but
in a few places, these were represented by an int; these have been
corrected to uint32_t
buttons. This requires some tools to convert .png images to that,
and that I put the characters in a two-dimensional grid in the
texture (since one-dimensional strip gets wider than the hardware
supports).
[git-p4: depot-paths = "//depot/solvespace/": change = 2138]
code. This is now drawn using gl, and the bitmap font (both there
and in the graphics window) is drawn from a texture from a static
table, not from the Win32 functions, since that's ~1000x faster.
So this adds a tool to generate that table. With luck that will
also fix my font issues under WINE, which won't have to render the
TTF itself.
Still needs some cleanup, and to make all the cosmetic improvements
that I want.
[git-p4: depot-paths = "//depot/solvespace/": change = 2130]
EvilSpirit
whitequark
Daniel Richard G
Jonathan Westhues