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The new fz_malloc_struct(A,B) macro allocates sizeof(B) bytes using
fz_malloc, and then passes the resultant pointer to Memento_label
to label it with "B".
This costs nothing in non-memento builds, but gives much nicer
listings of leaked blocks when memento is enabled.
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Also: use 'cannot' instead of 'failed to' in error messages.
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In builds that support configurable layers of antialiasing, move
the variables that control this into the context. This makes it
possible to safely use different levels of antialiasing in different
threads.
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Freetype globals are not shared between threads currently - to do that
we'll need to introduce a lock.
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This frees us from passing errors back everywhere, and hence enables us
to pass results back as return values.
Rather than having to explicitly check for errors everywhere and bubble
them, we now allow exception handling to do the work for us; the
downside to this is that we no longer emit as much debugging information
as we did before (though this could be put back in). For now, the
debugging information we have lost has been retained in comments
with 'RJW:' at the start.
This code needs fuller testing, but is being committed as a work in
progress.
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Huge pervasive change to lots of files, adding a context for exception
handling and allocation.
In time we'll move more statics into there.
Also fix some for(i = 0; i < function(...); i++) calls.
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Import exception handling code from WSS, modified to fit into the
fitz world.
With this code we have 'real' fz_try/fz_catch/fz_rethrow functions,
handling a fz_except type. We therefore rename the existing fz_throw/
fz_catch/fz_rethrow to be fz_error_make/fz_error_handle/fz_error_note.
We don't actually use fz_try/fz_catch/fz_rethrow yet...
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Detect the d0 or d1 operators by writing a bit to the new device
flags word. This can then be checked by the Type3 code to create
the appropriate backing pixmap.
In order to know what the appropriate backing pixmap is, we pass
an additional colorspace into the glyph rendering code.
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The problem is due to abutting images showing gaps between them.
These gaps are due to a combination of rounding errors, and anti-aliasing
effects on the edge of images.
The solution is to selectively 'grid fit' images.
If an image is part of a type 3 font, we do NOT want to grid fit it, as
this is where the sub pixel positioning makes a huge difference.
If an image is displayed with alpha, then we don't want to grid fit it
(as grid fitting will tend to make the edges of images overlap by 1
pixel, and will hence produce nasty effects).
Otherwise, we will grid fit; Grid fit in this sense is where we expand
an image to completely fill the pixel grid that it touches (i.e. the
extents for the image are expanded to pixel boundaries; no half full
pixels are left around the edges).
The only real change of note here is in how we detect that we are in a
type 3 charproc; we add a new draw device creation function that we call
in the type3 charproc case that sets a flag that the drawing functions
can check.
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FT_LOAD_TARGET_LIGHT implies the autohinter, which causes spectacular
failures on DynaLab fonts. The stripped down freetype we compile with
using the "thirdparty" package does not have the autohinter, which is
how this bug slipped through the regression testing.
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Also turn on font hinting when rendering non-aa text.
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Update the text rendering code to use the raster renderer in freetype rather
than the smooth one. No change to the hinting methods used yet.
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The run-together words are dead! Long live the underscores!
The postscript inspired naming convention of using all run-together
words has served us well, but it is now time for more readable code.
In this commit I have also added the sed script, rename.sed, that I used
to convert the source. Use it on your patches and application code.
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detection on some subset fonts.
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freetype.
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where the fontdesc was evicted from cache while the font still lived on in a display list, with a now stale pointer.
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and change the signature of fz_realloc to match.
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alpha painting.
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indentation errors in the future).
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scaling values.
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between pages.
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