| Commit message (Collapse) | Author | Age | Files | Lines |
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Wed Jul 14 17:47:38 2004 Owen Taylor <otaylor@redhat.com>
* pango/pango-layout.[ch] pango/ellipsize.c pango/Makefile.am:
Add PangoEllipsizeMode, pango_layout_set_ellipsize(), implement.
(#59071)
* pango/pango-layout-private.h pango/pango-layout.c:
Move PangoLayout structure into a separate header file.
* pango/pango-glyph-item.[ch]: Add pango_glyph_item_free().
* pango/pango-glyph-item-private.h pango/pango-glyph-item.c:
Internally export the PangoGlyphItemIter functionality.
* examples/renderdemo.[ch]: Add --ellipsize option.
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Thu Jun 24 00:50:46 2004 Owen Taylor <otaylor@redhat.com>
* pango/pango-layout.c (pango_layout_run_get_extents): Fix
bug with using wrong uline value.
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Fri Feb 27 11:23:21 2004 Owen Taylor <otaylor@redhat.com>
Patch from Dov Grobgeld to add auto-direction to PangoLayout
(more of #70451)
* examples/pangofttopgm.c: Add --no-auto-dir argument.
* pango-layout.[ch]: Add pango_layout_set_auto_dir()
defaulting to TRUE; resolve paragraph direction within
a layout by propagating base direction downwards
from paragraph to paragraph.
* pango-context.[ch]: Add pango_itemize_with_base_dir()
which overrides the base direction from the PangoContext.
Mon Mar 1 10:01:58 2004 Owen Taylor <otaylor@redhat.com>
* docs/tmpl/text-attributes.sgml: Document %PANGO_UNDERLINE_ERROR.
* pango/pangofc-fontmap.c: Pango*Fc*FontmapPrivate. Make compile.
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2003-11-25 Noah Levitt <nlevitt@columbia.edu>
* examples/pangoft2topgm.c: Add --indent=n option.
* pango/pango-layout.[ch]: Indent the first line of every paragraph,
not just the first line in the layout. (#66626)
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Sun Nov 17 23:28:26 2002 Owen Taylor <otaylor@redhat.com>
* pango/pango-glyph-item.[ch] pango/pango-layout.h:
Rename PangoLayoutRun to PangoGlyphItem (with a
typedef for compat), add pango_glyph_item_split(),
pango_glyph_item_apply_attrs().
* pango/pango-attributes.[ch]: Add
pango_attr_list_filter(), pango_attr_iterator_get_attrs().
* pango/pango-layout.c: Remove attributes that don't
affect shaping before shaping, shape and then add
them back. Fixes the infamous "underscores break
arabic shaping" bug (#83058)
* pango/pango-item.h: Remove an extraneous include.
* pango/pango-layout.c (imposed_shape): Fix bytes/chars
problem for glyph->log_clusters.
* pango/pango-layout.c (cluster_end_index)
* pango/pango-layout.c (pango_layout_iter_next_cluster): Fix
confusion between global indices and run-relative indices.
* docs/tmpl/glyphs.sgml: Improve docs for log_clusters.
* docs/*: Document new API and PangoOTRuleset
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Fri Nov 8 20:02:09 2002 Soeren Sandmann <sandmann@daimi.au.dk>
* docs/tmpl/coverage-maps.sgml:
* docs/tmpl/glyphs.sgml:
* docs/tmpl/layout.sgml:
* docs/tmpl/x-fonts.sgml:
* pango/mapping.c:
* pango/pango-coverage.c:
* pango/pango-coverage.h:
* pango/pango-glyph.h:
* pango/pango-layout.c:
* pango/pango-layout.h:
* pango/pangox.h:
Trivial s/foo/foo_/ fixes to make pango.h includable with -Wshadow
(#91680).
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2002-10-04 Alexander Larsson <alexl@redhat.com>
* pango/pango-layout.[ch]:
* docs/tmpl/layout.sgml:
Add, implement and document PANGO_WRAP_WORD_CHAR
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Tue Sep 18 15:47:08 2001 Owen Taylor <otaylor@redhat.com>
* configure.in (PANGO_MINOR_VERSION): Up to 0.19.
* pango/pango-font.h pango/pango-fontmap.[ch] pango/fonts.c
pango/pangoxft-fontmap.c pango/pangoft-fontmap.c pango/pango-context.[ch]
pango/pangox-fontmap.c: Add new PangoFontFace and PangoFontFamily
object types, and change the font listing API to list faces and
families, instead of face names and font descriptions.
* pango/pango-font.h pango/fonts.c: Make PangoFontDescription
an opaque heap-allocated structure, add accessors and
convenience functions.
* pango/pango-font.h pango/pango-private.h: Make PangoFontMetrics
heap allocated, protect the structure definition with
#ifdef PANGO_ENABLE_BACKEND, and add getters for the fields.
* pango/pango-attributes.[ch] ( pango_attr_iterator_get_font):
instead of providing a base font description and one to fill
in, provide a single font description to modify based on
the attributes.
* pango/pango-attributes.[ch]: Fix PangoAttrFontDesc to have
a PangoFontDescription by reference, not by value.
* pango/pango-utils.[ch]: make pango_parse_style() and friends
take pointers to individual enumerations instead of to a
PangoFontDescription structure.
* pango/*.c: Fix for the PangoFontDescription and PangoFontMetrics
changes.
* pango/pango-{break,engine,indic,ot,xft}.h pango/Makefile.am
pango/opentype/Makefile.am: Protect portions with
PANGO_ENABLE_ENGINE to shrink the public API.
* modules/*/Makefile.am: -DPANGO_ENABLE_ENGINE.
* pango/{pangox.h,pangox-private.h} modules/basic/basic-x.c: Move
pango_x_font_get_unknown_glyph() into public header since it is
used from modules.
* pango/pango-{context,font,fontmap,modules.utils}.h pango/Makefile.am:
Protect portions with PANGO_ENABLE_BACKEND to shrink the public API.
* pango/*.h: Use G_BEGIN/END_DECLS
* examples/viewer-qt.[cc,h]: Fix for changes to font listing API,
PangoFontDescription.
* pango/pango-indic.h modules/indic/*: Since we install this
header fix it up to Pango conventions, namespece
ZERO_WIDTH_JOINER, ZERO_WIDTH_NON_JOINER.
* docs/pango-sections.txt: Updated.
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Thu Jun 7 14:06:25 2001 Owen Taylor <otaylor@redhat.com>
* pango/pango-layout.c (pango_layout_move_cursor_visually):
Add a 'strong' parameter to allow moving either the strong
or the weak cursor visually, instead of the strong cursor.
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Fri May 18 11:30:57 2001 Owen Taylor <otaylor@redhat.com>
* pango/opentype/disasm.c: Use ISO C99 varargs when
available.
Thu May 17 11:16:23 2001 Owen Taylor <otaylor@redhat.com>
* pango/mapping.c: Fixup docs, remove some FIXMEs that are
no longer applicable.
* pango/pango-layout.c: Move by graphemes, not characters.
* pango/pango-layout.c (pango_layout_line_x_to_index):
Position at the closest grapheme boundary, not at character
boundaries.
* pango/pango-layout.c (pango_layout_line_index_to_x):
Return positions of grapheme boundaries, not character
boundaries.
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2001-04-27 Havoc Pennington <hp@redhat.com>
* pango/pangox-fontmap.c: Move some fontmap stuff to
pangox-private.h to access fontmap->resolution in pangox.c
* pango/pangox.c (get_font_metrics_from_subfonts): multiply
avg. width by PANGO_SCALE, and consider that avg width from X is
in decipoints
* modules/basic/basic-x.c: mark some chars unknown when shaping,
with a flag PANGO_X_UNKNOWN_FLAG
* pango/pangox.c (pango_x_font_get_metrics): use lookup_lang not
lang when calling get_font_metrics_from_string
(pango_x_render): render unknown chars
* pango/pango-layout.c:
(pango_layout_set_single_paragraph_mode): add mode where we don't
break on para separators, instead we shape them and display glyphs
(pango_layout_get_single_paragraph_mode): getter for above
(pango_layout_check_lines): handle single paragraph mode
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2001-02-12 Havoc Pennington <hp@redhat.com>
* pango/pango-attributes.c (pango_attr_list_insert_internal):
properly update the tail of the list
(pango_attr_list_change): flip order of tmp_list2 =
tmp_list2->next and prev2 = tmp_list2 to avoid setting
prev2 and tmp_list2 to the same value thus creating a
mangled list.
* pango/pango-layout.c (pango_layout_xy_to_index): When returning
FALSE, set the index/trailing to the nearest location, instead
of setting them to 0.
(pango_layout_line_x_to_index): Fix a bug where line->start_index
wasn't used. Return boolean for whether we had to clamp the
value to get an index.
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2001-01-23 Havoc Pennington <hp@redhat.com>
* pango/pango-layout.c (pango_layout_copy): New function
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2001-01-22 Havoc Pennington <hp@redhat.com>
* tests/testboundaries.c (check_line_char): s/is_break/is_line_break/g;
* pango/pango-layout.c, pango/pango-layout.h: Add PangoWrapMode
for PangoLayout
* pango/break.c (pango_default_break): implement char break log
attr
* pango/pango-break.h (struct _PangoLogAttr): rename is_break
is_line_break, add is_char_break field
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2000-11-30 Havoc Pennington <hp@pobox.com>
* modules/thai/thai.c: delete lang engine
* modules/tamil/tamil.c: delete lang engine
(tamil_engine_x_new): fix type tag for shape engine
* modules/indic/myanmar.c: delete lang engine
(pango_engine_x_new): fix type tag for shape engine
* modules/indic/gurmukhi.c: delete lang engine
(pango_indic_engine_x_new): fix type tag for shape engine
* modules/indic/gujarati.c: delete lang engine
(pango_indic_engine_x_new): fix type tag for shape engine
* modules/indic/devanagari.c: delete lang engine
(pango_indic_engine_x_new): fix type tag for shape engine
* modules/indic/pango-indic-script.h (SCRIPT_ENGINE_DEFINITION):
delete lang engine
* modules/indic/bengali.c: delete the lang engine
(pango_indic_engine_x_new): fix type tag for shape engine
* modules/hangul/hangul.c: delete the lang engine
(hangul_engine_x_new): fix type tag for shape engine
* modules/basic/basic.c: delete the lang engine
(basic_engine_x_new): fix type tag for shape engine
* modules/basic/basic-win32.c: delete the lang engine
(basic_engine_win32_new): this was a shape engine,
use correct type tag
* modules/basic/basic-ft2.c: delete the lang engine
* modules/arabic/arabic.c: Delete the lang engine
(arabic_engine_x_new): this is a shape
engine, not a lang engine, fix type tag
* pango/pango-layout.c (pango_layout_index_to_line_x): handle
the fact that paragraph delimiters aren't in the layout lines
(pango_layout_index_to_pos): update to handle paragraph
delimiters
* pango/break.c (pango_find_paragraph_boundary): New function
to find paragraph boundaries
* pango/pango-layout.c (get_items_log_attrs): don't separate calls
to pango_break() when directional level changes
* pango/pango-layout.h (struct _PangoLayoutLine): put start index
of the line into the struct
* pango/pango-layout.c (pango_layout_get_cursor_pos): Fixups to
reflect the fact that paragraph separators are removed from the
input text.
* pango/pango-layout.c (can_break_at): don't
special-case start of line and whitespace-following-alphabetic
here, because pango_break() already handles that properly
* tests/testboundaries.c, tests/Makefile.am, tests/runtests.sh:
Add directory for test programs, and a script to run them all
* configure.in: Create Makefile in tests
* pango/break.c (pango_break): Try for a real implementation of
the Unicode text boundary algorithms
(pango_get_log_attrs): Allow length to be -1
* pango/pango-context.c (pango_itemize): use pango_item_new(),
assert that items added to the list are sane.
* pango/pango-layout.c (pango_layout_check_lines): Reimplement
to honor the paragraph boundaries from pango_break()
* pango/pango-layout.c (process_item): use pango_item_split() here
* pango/pango-item.c (pango_item_split): New function to split an
item into two items
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2000-11-13 Havoc Pennington <hp@redhat.com>
* docs/pango-sections.txt: Add new PangoLayoutIter entry points
* pango/glyphstring.c (pango_glyph_string_extents_range): New
function
* pango/pango-layout.c: Create PangoLayoutIter for iterating over
a layout's visual elements
* pango/pango-layout.c (pango_layout_check_lines): plug
a memleak (attr iterator not freed)
* pango/pango-tabs.c (pango_tab_array_free): plug a memleak
(array->tabs not freed)
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2000-11-12 Havoc Pennington <hp@pobox.com>
* pango/pango-layout.c (pango_layout_get_text): Add accessor to
get the text from the layout
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2000-11-01 Havoc Pennington <hp@pobox.com>
* pango/pango-attributes.c (pango_attr_scale_new): Add a new
attribute for scaling a font; also required adding PangoAttrFloat.
(pango_attr_iterator_get_font): Add PANGO_ATTR_SCALE handling.
* pango/pango-utils.c (pango_parse_stretch): Take a plain string
not a GString
(pango_parse_weight): ditto
(pango_parse_variant): ditto
(pango_parse_style): ditto
* pango/pangox-fontmap.c (pango_x_font_map_read_alias_file): pass
GString::str instead of the GString itself to pango_parse_*
* pango/pangoft2-fontmap.c (pango_ft2_insert_face): ditto
* pango/pangowin32-fontmap.c
(pango_win32_font_map_read_alias_file): ditto
* pango/pango-layout.c (get_tab_pos): adapt to new pango_itemize()
signature
(pango_layout_check_lines): Raise attr list copy/creation out of
the loop over paragraphs. Adapt to pango_itemize() changes.
* pango/pango-context.c (pango_itemize): pass in a starting
index and a cached iterator
(add_engines): Easy optimization, pass in
n_chars instead of recomputing it. Also, pass on the start
index and cached iterator.
* docs/pango-sections.txt: Add new stuff
docs/pango_markup.sgml: Docs on markup format
* pango/pango-layout.c (pango_layout_get_attributes): New function
to retrieve the AttrList from a layout
(pango_layout_set_markup): Set layout from markup
(pango_layout_set_markup_with_accel): Set layout from markup
including accelerator parsing.
* pango/pango-attributes.h (pango_parse_markup): New function to
convert a tag string to an attribute list
* pango/pango-markup.c (pango_parse_markup): implement
* docs/Makefile.am, docs/pango-docs.sgml, docs/pango-sections.txt,
docs/pango_markup.sgml: oooooh, documentation for the above patch!
* docs/tmpl/pango-unused.sgml: Remove from CVS; just causes
problems, and was full of checked-in conflict markers.
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2000-09-25 Havoc Pennington <hp@redhat.com>
* pango/pango-layout.c: Add a tab array field to PangoLayout,
and use it when laying out the text (if it's set, otherwise
use default tabs-are-8-spaces thing)
* pango/pango-tabs.c, pango/pango-tabs.h: tab-related data types
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Utilize G_GNUC_CONST.
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Sun Jul 2 17:59:56 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-attributes.[ch] (pango_attr_list_insert_before): New
function that inserts before other attributes with matching
start index.
* pango/pango-layout.[ch] (pango_layout_set_font_description): Add
the ability to set a default font description on the layout, overriding
the font description from the context.
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Sun Jul 2 17:19:11 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-types.h: Add a PANGO_PIXELS macro to convert
from pango units to device units and round.
* pango/pango-layout.[ch]: Add convenience functions
pango_layout_get_pixel_extents, pango_layout_get_size,
pango_layout_get_pixel_size pango_layout_line_get_pixel_extents.
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2000-06-14 Havoc Pennington <hp@redhat.com>
* pango/pango-attributes.c (pango_attr_list_copy): Function to
copy the attribute list.
2000-06-13 Havoc Pennington <hp@redhat.com>
* pango/pango-layout.h: Convert PangoLayout to GObject
* pango/pango-context.h: Convert to
PangoContext to GObject
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Sun May 28 16:24:43 2000 Owen Taylor <otaylor@redhat.com>
* examples/Makefile.am examples/viewer-qt.cc
examples/viewer-qt.h: Since we require GLib-1.3,
and thus can no longer build the examples against
GTK+-1.2, and since there is a nasty circular dependency
if we build examples against GTK+-1.3, rewrite
(optional) example program in Qt. (I wasn't going
to do it in Xaw or straight Xlib...)
* configure.in: Added checks for Qt.
* pango/pango-layout.h: Fix constness.
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Sun Apr 23 23:33:10 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-layout.c (pango_layout_move_cursor_visually): New
function for visual (left-right, not forward-back) cursor
navigation within a layout.
Thu Apr 20 22:16:39 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-layout.c (pango_layout_line_x_to_index): As a hack,
for x-positions at the edge of a line, fudge the position to be
one before the line end (which is, for programs that don't properly
handle the trailing flag), instead of at the end of the line.
This works fine for whitespace-broken languages, but won't work
right for languages that don't use whitespace to break lines.
(GtkText* needs to keep track of whether a cursor is trailing
or not)
* pango/pango-layout.c (pango_layout_check_lines): Prohibit breaking
a line at a non-whitespace -> space transition. (So that we
never put wrap single character of whitespace at the beginning of
a line)
* pango/break.c (pango_break): Always allow a break before
the first char.
* pango/pango-layout.c (pango_layout_line_x_to_index): Remove the return
value from the function, make it return the appropriate index
depending on the base direction of the layoutt.
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Mon Apr 17 12:04:20 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-layout.[ch]: Add a function pango_layout_line_get_x_ranges(),
to allow handling selections not as attributes. Which is necessary,
since currently setting the background/foreground results in
splitting shaped runs.
Fri Apr 14 13:20:05 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-layout.c (pango_layout_check_lines): Fix bug with
indent handling.
* pango/pango-layout.c (process_item): Never break a line at
a non-break position, even if that position ends an item.
Fri Apr 14 10:43:09 2000 Owen Taylor <otaylor@redhat.com>
* pango/pangox.c (pango_x_render_layout_line): Fix a missing
PANGO_SCALE factor for UNDERLINE_SINGLE.
* pango/pango-layout.c (pango_layout_get_cursor_pos): New function
to determine cursor positions corresponding to a particular
index.
Wed Apr 12 15:44:22 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-attributes.[ch]: Add PANGO_ATTR_FONT_DESC, which
allows an entire font description to be specified as a single
attribute, instead of as 6 separate attributes.
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Tue Apr 4 20:13:06 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-context.h: Add user data to PangoContext
* pango/pangox.[ch] examples/viewer.c: Rework system for create GC's
so that the necessary information is stored on the PangoContext
instead of being passed to layout_render()
* pango/utils.[ch] pango/pango-context.c: fribidi-0.1.9
wants UCS-4 not UCS2; switch accordingly.
* pango/fonts.c pango/pango-font.h pango/pangox.c: Add functions
to get overall font metrics, possibly per-language. (Right now,
just font ascent, descent.) The implementation of this for
X is horribly complex.
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Thu Mar 30 16:49:06 2000 Owen Taylor <otaylor@redhat.com>
* modules/basic/basic.c pango/utils.c (find_converter): Use
"UTF-8" with the dash as the charset name for utf-8.
(Change suggested by Adrian Havill <havill@turbolinux.co.jp>)
* pango/pango-layout.[ch]: Add function to get logical attributes
of the text string.
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Mon Mar 13 10:54:48 2000 Owen Taylor <otaylor@redhat.com>
* pango/pango-item.[ch]: Memory management functions for PangoItem.
* pango/*.[ch]: Random constification.
* pango/pangox.c pango/pango-layout.c pango/pango-context.c:
Add an extra_attrs field to PangoItem. Use this to handle underlining
for PangoLayout.
* examples/viewer.c (reload_font): Make paragraphs global
to save the complexity of passing it around all over the place.
* pango/pango-layout.[ch] (pango_layout_context_changed): Add
a function to reset the layout on changes to the layout's
context.
* pango/pangox.c (pango_x_make_matching_xlfd): Prefer bitmap
to scaleable if the discrepancy is < 1 pixel. (Probably not
the ideal criterion.)
* pango/pangox.c (pango_x_font_map_for_display): Fix resolution
computation error.
* pango/pango-layout.c (pango_layout_check_lines): Handle
text with embedded newlines.
* pango/pangox.c (pango_x_render_layout): Fix y to refer
to the top of the layout, not the baseline of the first
line.
* pango/pango-layout.c (process_item): Don't wrap if width is
set to -1.
* Makefile.am configure.in **/*.[ch]: move libpango/ directory
and fix all headers to install under include/pango/
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Thu Mar 9 19:55:21 2000 Owen Taylor <otaylor@redhat.com>
* Release pango-0.8
* docs/TEXT/coding-style: Added some notes about coding style
within Pango.
* modules/*.[ch]: New version from Karl Koehler adding support
for vowels marks, better ligatures.
* docs/tmpl/*: Doc updates
* libpango/pango-layout.[ch] libpango/pangox/.[ch]: Add functions
for handling paragraphs as 2-D objects, not simple lists of lines,
to make things easier for people using pango-layout.
* examples/viewer.c: Simplify using the now 2-D layout-capabable
PangoLayout.
* libpango/fonts.c (pango_font_{get_coverage,find_shaper}): Allow
NULL language tag.
* libpango/modules.c (_pango_find_map): Fix for allowing
NULL language tag.
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Wed Mar 8 13:34:57 2000 Owen Taylor <otaylor@redhat.com>
* libpango/pango-layout.[ch]: First draft of highlevel
driver. It currently only handles a paragraph as a list
of lines, but it is probably necessary to make it handle
2D layout for a paragraph as well
* examples/viewer.c: Move over to new layout driver
(much of the code moved into pango-layout.c)
* libpango/glyphs.c libpango/pango-glyphs.h: Fixes to get_extents(),
add pango_glyph_string_get_logical_widths.
* libpango/pango-itemize.c: Handle 0-length text properly.
* libpango/pangox.c: When loading particular sized fonts,
use the original XLFD, since XFree86 doesn't handle wildcards
in aliases properly.
* libpango/pangox.[ch] (pango_x_render_layout_line): Add function
to render an entire PangoLayoutLine.
* libpango/reorder-items.c: Add a note to the effect
that pango_reorder_items() is basically replaced by a
similar function in PangoLayout.
Wed Mar 8 10:58:56 2000 Owen Taylor <otaylor@redhat.com>
* modules/arabic/arconv.c (shapecount): Fix from Karl
Koehler to joining behavior.
* modules/Makefile.am modules/arabic/*: Added arabic
shaper from Karl Koehler <koehler@or.uni-bonn.de>
* modules/basic/tables-{small,big}.i: Remove arabic
from the ranges that the basic shaper marks as "exact".
* examples/HELLO.utf8: Partially alphabetize, add arabic.
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Mon Mar 6 20:55:32 2000 Owen Taylor <otaylor@redhat.com>
* libpango/mapping.c example/viewer.c:
* modules/hangul/hangul.c modules/basic/basic.c modules/tamil/tamil.c:
Convert log_clusters[] use from char offsets to byte offset - should
make it easier to have all interface deal with stuff in byte offsets.
* libpango/mapping.c libpango/pango-glyph.h: Rename x_to_cp and cp_to_x
to make them "member functions" of glyph_string.
* libpango/pango-types.h: Add a rectangle type for use in storing
glyph/glyph-string extents, plus macros for extracting ascent/descent.
* libpango/fonts.c libpango/pango-font.h libpango/pangox.c: Virtualize
glyph extents function into the font.
* libpango/pangox.c modules/*/*.c examples/viewer.c: Convert over to
new rationalized unit system - everything in 1000ths of a point
or 1000ths of a glyph unit.
* libpango/pango-glyph.h libpango/glyphstring.c: Add function to get
extents of a glyph string. (We may want to fastpath the width in
the future, since getting the width seems to be a very common
and time-critical operation)
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Wed Feb 2 00:07:13 2000 Owen Taylor <otaylor@redhat.com>
* libpango/pango-*.h: The great header file reorganization.
Split up roughtly by objects.
* libpango/pango-font.h libpango/fonts.h: Add generic
font-loading and listing interfaces.
* libpango/pangox.c: Implement font-listing/loading interfaces
for X.
* libpango/pango-context.[ch]: Flesh out context structure.
Add appropriate accesors, font loading-methods, etc.
* libpango/pango-coverage.[ch]: Coverage map objects.
* examples/viewer.c: First stab at adding font-selection. Majorly
deficient for the moment until we add font lists and fallbacks
based on coverage maps.
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