* gtk/gtktextview.c (gtk_text_view_move_cursor_internal): Skip
invisible chars for GTK_MOVEMENT_LOGICAL_POSITIONS and
GTK_MOVEMENT_WORDS.
* gtk/gtktextiter.c,
gtk/gtktextiter.h: Add some variant movement functions which
skip invisible chars, and do some cleanups.
* gtk/gtk-sections.txt: Add new GtkTextIter functions.
2003-01-05 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextview.c (gtk_text_view_move_cursor_internal): Make
C-Down step through the sequence of paragraph ends (old behaviour
included paragraph starts). (#80340, patch by Narayana Pattipati)
* gtk/gtktextiter.c (_gtk_text_btree_get_iter_at_first_toggle):
Check for a tag toggle at the start iterator before calling
gtk_text_iter_forward_to_tag_toggle(). (#102090, patch by Daniel
Elstner)
2002-12-23 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextiter.c (gtk_text_iter_backward_sentence_starts):
Don't call gtk_text_iter_backward_sentence_start() if
count is zero. (#99115)
* gtk/gtktextview.c (gtk_text_view_move_cursor_internal): Call
move_cursor() even if the cursor hasn't moved, since it has the
side effect of canceling the selection. (#81395, #98537, #9833)
Thu Jun 13 19:41:56 2002 Owen Taylor <otaylor@redhat.com>
* gtk/gtkiconfactory.c gtk/gtkselection.c gtk/gtkstyle.c
gtk/gtktextiter.c gtk/gtktexttag.c gtk/gtktreemodel.c
gtk/gtkwidget.c: Fix type names for GtkIconSet,
GtkIconSource, GtkSelectionData, GtkBorder, GtkTextIter,
GtkTextAttributes, GtkTreePath, GtkTreeIter,
GtkRequisition, which were all registered as GtkType*.
(#84634, James Henstridge; patch from Jonathan Blandford.)
Sat Mar 2 13:26:58 2002 Owen Taylor <otaylor@redhat.com>
* gtk/Makefile.am: Switch style of stamp file usage.
* gtk/Makefile.am gtk/typeutils.[ch]: Switch all the exported
enumeration/fags TYPE variables over to macros for get_type() functions,
for lazy definition and to get rid of expensive relocations.
* gtk/gtkiconfactory.[ch] gtk/gtkselection.[ch] gtk/gtkstyle.[ch]
gtk/gtktextiter.[ch] gtk/gtktexttag.[ch] gtk/gtktreemodel.[ch]
gtk/gtktypeutils.[ch] gtk/gtkwidget.[ch]: Switch boxed type
definitions over manually coded get_type() functions.
* gtk/gtk.def: Updates for above
* gtk/{genmarshal.pl,makeenums.awk,makeenums.h,maketypes.awk}:
Remove from CVS, no longer used.
* configure.in: Remove checks for awk.
2002-01-01 Havoc Pennington <hp@pobox.com>
* gtk/gtktextview.c (gtk_text_view_expose_event): propagate
exposes to no window children not in the buffer window.
(gtk_text_view_class_init): add move_focus bindings for Ctrl-Tab
- is this the right way to do it?
(gtk_text_view_focus): add focus method, just chains up for now,
I'm not sure why the GtkContainer implementation doesn't work
* gtk/gtktextbtree.c (_gtk_text_btree_insert_child_anchor): fill
in the text line for the child anchor segment
* tests/testtext.c (do_add_focus_children): add another test
example (to put focusable buttons into the widget)
2001-12-31 Havoc Pennington <hp@pobox.com>
* gtk/gtktextiter.c (gtk_text_iter_get_visible_line_index): fix
to use ensure_byte_offsets not ensure_char_offsets, patch
from Padraig O'Briain bug #67356
2001-11-29 Havoc Pennington <hp@redhat.com>
* gtk/gtktextiter.c (_gtk_text_iter_forward_indexable_segment):
assertion here that we were at the end iterator was not correct;
change code to move us to the end iterator. bug #65731
2001-11-14 Havoc Pennington <hp@redhat.com>
* gtk/gtktextview.c (gtk_text_view_move_cursor): fix Control-E so
it doesn't move to a new line each time you press it
* gtk/gtktextiter.c (gtk_text_iter_forward_to_line_end): fix
return value, #62987
2001-11-14 Havoc Pennington <hp@redhat.com>
* tests/testtextbuffer.c (main): bulk of the tests were commented
out, oops.
* gtk/gtktextiter.c (find_paragraph_delimiter_for_line): make this
function work, should resolve#63426
(gtk_text_iter_ends_line): return TRUE for the end iterator
* gtk/gtktextiter.h: put padding back in GtkTextIter, I thought of
a couple things that might get cached in here.
2001-10-27 Anders Carlsson <andersca@gnu.org>
* gtk/gtktextiter.c (gtk_text_iter_backward_sentence_start):
Fix docs to say previous instead of next.
(gtk_text_iter_backward_word_start): Likewise.
This fixes bug #62980.
2001-10-24 Havoc Pennington <hp@pobox.com>
* gtk/gtktextiter.c (gtk_text_iter_backward_chars): if we move to
the front of a segment, use the "slow" technique for moving
backward, so we don't mess up the any_segment field in the iter.
Fixes#57707
* tests/testtextbuffer.c: add code to detect #57707, to avoid
regression
2001-10-22 Havoc Pennington <hp@redhat.com>
* gtk/gtktextbuffer.c (gtk_text_buffer_place_cursor): don't back
up a char from the end iterator, fixes#61859 ("can't put cursor
at the end of the buffer")
* gtk/gtktextiter.c (gtk_text_iter_forward_to_line_end): fix this
to work with delimiters other than newline.
* tests/testtextbuffer.c: add some tests for get_chars_in_line,
get_bytes_in_line
* gtk/gtktextiter.c (gtk_text_iter_get_chars_in_line): fix for the
last line, since the newline is no longer counted.
(gtk_text_iter_get_bytes_in_line): ditto
2001-10-22 Havoc Pennington <hp@redhat.com>
* gtk/gtktextiter.c (_gtk_text_iter_forward_indexable_segment):
add temporary code to dump btree contents on assertion failure
described in #62656
* gtk/gtktextbtree.c (ensure_end_iter_segment): add some
assertions that we're getting the right end iter segment
* gtk/gtktextiter.c (_gtk_text_iter_forward_indexable_segment):
verify that we aren't on the end iterator after moving
forward one segment - fixes return value in an obscure case.
Also, some trivial code cleanup/rearranging.
2001-10-22 Havoc Pennington <hp@redhat.com>
* gtk/gtktextlayout.h: add a #error unless you define
GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API, so people don't use this accidentally
* gtk/gtktext*.c: #define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API as appropriate.
2001-10-22 Havoc Pennington <hp@redhat.com>
* gtk/gtktextiter.c (gtk_text_iter_set_line): Clarify behavior in
docs, #61777
(gtk_text_iter_forward_search) (gtk_text_iter_backward_search):
change the two boolean args to a flags field, so we can extend
to add case insensitive, regexp searches later. #61852
2001-10-03 Havoc Pennington <hp@redhat.com>
* tests/testtextbuffer.c (logical_motion_tests): fix test case,
it previously verified incorrect behavior
Fixes for #61565
* gtk/gtktextiter.c (gtk_text_iter_set_line): don't return lines
off the end
(_gtk_text_btree_get_iter_at_line_char): don't return lines off
the end
(_gtk_text_btree_get_iter_at_line_byte): don't return lines off
the end
(gtk_text_iter_forward_lines): if on the last line, move to end of
it
* gtk/gtktextbtree.c (_gtk_text_btree_last_could_contain_tag):
don't return a line off the end
2001-09-24 Havoc Pennington <hp@redhat.com>
* gtk/gtktextiter.c, gtk/gtktextbuffer.c, gtk/gtktextbtree.c,
gtktextlayout.c:
Get rid of the newline-that-could-not-be-deleted; buffers may
now be zero-length. Much easier to fix than expected, once
I figured out the right way to do it. However, there are
various subtle bugs introduced by this that will have to get
sorted out. Please use bugzilla.
2001-09-20 Havoc Pennington <hp@pobox.com>
* configure.in (PANGO_REQUIRED_VERSION)
(ATK_REQUIRED_VERSION): add variables and checks for specific
versions of dependencies. Previously we didn't verify the
Pango or ATk versions.
2001-09-09 Havoc Pennington <hp@pobox.com>
* gtk/gtktextiter.c: fool with indentation
(gtk_text_iter_in_range): add g_return_if_fail
2001-09-08 Havoc Pennington <hp@pobox.com>
* gtk/gtkalignment.c (gtk_alignment_class_init): default
xscale/yscale to 0.0, not 0.5, 0.5 isn't useful
* tests/testtextbuffer.c: fix usage of gtk_text_iter_spew
* gtk/gtktextiter.c: fix docs
(gtk_text_iter_spew): get rid of this
* gtk/gtklayout.c: docs
* gtk/gtkbutton.c (gtk_button_construct_child): add an alignment
to center image and label together, instead of having image on
left and label centered, patch/suggestion from Jacob
* gtk/gtkdialog.c: docs
2001-09-08 Havoc Pennington <hp@pobox.com>
* gtk/tmpl/gtklayout.sgml: docs
* gdk-pixbuf/gdk-pixbuf.sgml: remove the section on compiling
gdk-pixbuf since it isn't a standalone package anymore
* gtk/building.sgml: section on compiling GTK itself
Mon Jun 11 18:15:16 2001 Owen Taylor <otaylor@redhat.com>
* gdk/gdk.h: Add missing gdk_rectangle_get_type() prototype.
* gtk/gtk[hv]scale.c: Include math.h, stdlib.h
* gdk/gdkpango.h gtk/gtkclist.c gtk/gtkentry.c gtk/gtkmain.[ch]
gtk/gtkspinbutton.c gtk/gtkstyle.c gtk/gtktextbuffer.c
gtk/gtktextdisplay.c gtk/gtktextiter.[ch]
gtk/gtktextlayout.c gtk/gtktexttag.[ch] gtk/gtkwidget.c: Adapt
to recent changes in Pango.
* tests/testgtk.c: Set language tags with gtk_label_set_markup()
to test whether the basic engine honors them.
2001-06-08 Havoc Pennington <hp@redhat.com>
* gtk/gtktextbuffer.c (gtk_text_buffer_get_start_iter): added this
function
* gtk/gtktextview.c (gtk_text_view_get_default_attributes): added
this function
2001-05-22 Joe Shaw <joe@ximian.com>
* gtk/gtktextiter.c (_gtk_text_btree_get_iter_at_last_toggle):
Simplify as suggested by Havoc. Just get the last iter and work
backward to the tag instead of getting a line and working back from
there. Fixes passing in an invalid offset to
iter_init_from_byte_offset().
2001-05-04 Havoc Pennington <hp@redhat.com>
* configure.in: fix some shell typos
* gtk/gtkcolorsel.c (gtk_color_selection_destroy): warning fix
* gtk/gtkimage.c: handle animations
* gtk/gtkcheckbutton.c (gtk_check_button_size_request): request
border_width * 2, not just border_width
* gtk/gtkscale.c: add "format_value" signal to allow people
to override the way values are drawn.
(gtk_scale_get_value_size): fix width/height mistake,
and compute size from actual displayed text, not
from made-up text.
* gtk/gtktexttag.c (gtk_text_tag_class_init): fix return type in
signal registration
* tests/testtext.c: Add "Remove all tags" menu item for testing
* gtk/gtktextbuffer.c (gtk_text_buffer_remove_all_tags): implement
* demos/gtk-demo/main.c (main): add hack so we can find modules
without installing gtk
* demos/gtk-demo/textview.c (insert_text): demo font scaling
* gtk/gtkcellrenderertext.c: Add "scale" property (font scaling
factor)
(gtk_cell_renderer_text_set_property): remove some bogus
g_object_notify
* gtk/gtktexttag.c: add "scale" property which is a font scaling
factor
* gtk/gtktextlayout.c (add_text_attrs): add font scale attribute
to layout
* gtk/gtktextiter.c (gtk_text_iter_is_start): rename from
gtk_text_iter_is_first
2001-05-04 Havoc Pennington <hp@redhat.com>
* pixops/pixops.c (pixops_process): merge fix from stable: Patch
from hoshem@mel.comcen.com.au to fix nonzero X offsets. Fixes
bug #50371.
* gdk-pixbuf/pixops/pixops.c (pixops_composite_nearest): merge
from stable: Patch from OKADA Mitsuru <m-okada@fjb.co.jp> to fix
confusion of using "src" instead of "p".
(pixops_composite_color_nearest): Use a more accurate (and
correct, to begin with) compositing method. This cures checks
showing through on images with no alpha.
* gdk-pixbuf.c (gdk_pixbuf_fill): fix bug that left some trailing
bytes unfilled.
* gdk-pixbuf-io.h: fix UpdatedNotifyFunc to use signed ints
* gdk-pixbuf-loader.h (struct _GdkPixbufLoaderClass): Change
area_updated signal to use signed ints. Removed animation-related
signals.
* io-gif.c, io-gif-animation.h, io-gif-animation.c: Massive
rewrite action
* gdk-pixbuf-animation.c: Add GdkPixbufAnimationIter to abstract
all the pesky details. Remove old frame-based API. Make
GdkPixbufAnimation an abstract base class, derived by the loaders.
2001-04-21 Havoc Pennington <hp@pobox.com>
* gtk/gtktextdisplay.c (gtk_text_layout_draw): handle 0-height
empty/invisible lines.
* gtk/gtktextiter.c (gtk_text_iter_set_visible_line_offset)
(gtk_text_iter_set_visible_line_index): new functions to set
indexes excluding invisible text
* gtk/gtktextlayout.c (line_display_iter_to_index): get visible
index
* gtk/gtktextiter.c (gtk_text_iter_get_visible_line_index)
(gtk_text_iter_get_visible_line_offset): new functions to
get indexes excluding invisible text
* gtk/gtkmessagedialog.c (gtk_message_dialog_init): strip out a
bunch of extra padding that served no purpose
* gtk/gtkdialog.c: Make all the spacings configurable via style
properties, for chubbiness configuration in themes
* tests/testtext.c: fix path to the immodules.
2001-02-15 Havoc Pennington <hp@redhat.com>
* gdk/gdkpango.c (gdk_pango_layout_line_get_clip_region): convert
the X coordinates so they're with respect to the line, rather than
with respect to the layout.
* gtk/gtkalignment.c: Convert to new property API, patch from Lee
Mallabone
* gtk/testgtk.c (create_range_controls): add vscale tests,
and inverted test
* gtk/gtkrange.c (gtk_range_set_inverted): new function to fix
#50806
* gtk/gtkentry.c (gtk_entry_get_text): add G_CONST_RETURN
* gtk/gtktextiter.h (gtk_text_iter_is_last): rename
gtk_text_iter_is_end
* gtk/gtktextbuffer.h (gtk_text_buffer_get_last_iter):
rename gtk_text_buffer_get_end_iter
* gtk/testgtk.c (create_labels): Add test for selectable
* gtk/gtkentry.c (gtk_entry_draw_text): Use new GDK API to draw
the selection stuff. This code is kind of broken since it doesn't
use the theme engine.
* gdk/gdkpango.c (gdk_pango_layout_line_get_clip_region):
fix infinite loop and y offset problem
(gdk_draw_layout_line_with_colors): fix foreground color handling
* gtk/gtklabel.h, gtk/gtklabel.c: Implement a "selectable" flag
that makes the label selectable.
* gtk/gtklabel.c (gtk_label_style_set): recreate the label's
layout when the style is set, since fonts etc. could have changed.
2001-01-22 Havoc Pennington <hp@redhat.com>
* Makefile.am: Add built marshaller files to support
GdkPixbufLoader signals
* gdk-pixbuf-io.c (gdk_pixbuf_load_module): have
GDK_PIXBUF_MODULEDIR unconditionally replace the compiled-in
module location, rather than acting as a fallback, because we are
using GDK_PIXBUF_MODULEDIR to use gdk-pixbuf before installing it.
* gdk-pixbuf.h: include gdk-pixbuf-loader.h
* gdk-pixbuf-loader.h, gdk-pixbuf-loader.c: Move back over here
from gtk, and add error to close(), because stop_load may do
parsing of the image.
* pixops/have_mmx.S (_pixops_have_mmx): add newline at end of file
* io-*.c: make individual operations static, and add fill_vtable
functions which are exported. Fix the collection of type warnings
that surfaced, including a number of functions that didn't
properly take a GError and some that weren't
const-correct. Involved adding error handling for a few loaders.
* gdk-pixbuf-io.h: Add error reporting to stop_load function
* gdk-pixbuf-io.c (gdk_pixbuf_load_module): change to just look up
a function that fills in the GdkPixbufModule vtable, instead of
looking up all the image functions individually; this means we
can get type safety within modules for the loader functions.
Also it means you don't have to keep the statically compiled and
GModule versions in sync.
* test-gdk-pixbuf.c (main): remove gdk_pixbuf_init()
* make-inline-pixbuf.c (main): remove call to gdk_pixbuf_init()
* gdk-pixbuf.h: nuke gdk_pixbuf_init()
* gdk-pixbuf-animation.c (gdk_pixbuf_frame_get_type): g_type_init
() here
* gdk-pixbuf.c (gdk_pixbuf_get_type): g_type_init () here
* gdk-pixbuf-animation.c (gdk_pixbuf_animation_get_type):
g_type_init() here
2001-01-22 Havoc Pennington <hp@redhat.com>
* demos/testanimation.c: fix to reflect gdk-pixbuf changes
* demos/testpixbuf.c: fix to reflect gdk-pixbuf changes
* gtk/gdk-pixbuf-loader.c, gtk/gdk-pixbuf-loader.h:
Remove, move back to gdk-pixbuf
* gtk/gtktextiter.c, gtk/gtktextiter.h: add sentence equivalents
to all the word functions
* gtk/gtktextview.c (gtk_text_view_start_cursor_blink): return
before doing anything on NULL layout or if we don't have the focus
* gtk/testtext.c (fill_example_buffer): "justification"
* gtk/gtktexttag.h, gtk/gtktexttag.c: change the tag attribute
to be called "justification" not "justify"
* demos/gtk-demo/textview.c (create_tags): "justification"
* gtk/gtktextlayout.c (set_para_values): Handle char-wise wrapping
2001-01-05 Havoc Pennington <hp@redhat.com>
* gtk/gtktextiter.c (gtk_text_iter_ends_line): this function was
broken if called on the first position in the buffer.
* gtk/gtktextlayout.c (line_display_index_to_iter): fix
forward_to_delimiters to be called only if we aren't already at
the delimiters.
2001-01-04 Havoc Pennington <hp@redhat.com>
* gtk/gtktextlayout.c (line_display_index_to_iter): if index is
equal to the line length, then position iterator before paragraph
separators. Fixes crash reported by Mikael Hermansson when
pressing left arrow from the start of a line.
* gtk/gtktextiter.c (iter_set_from_byte_offset): Add g_error
about byte indexes off the end
(iter_set_from_char_offset): add g_error about char offsets
off the end
2001-01-03 Havoc Pennington <hp@redhat.com>
* gtk/gtktextbtree.c: Adapt to uscore-ification of gtktextiterprivate
* gtk/gtktextdisplay.c (gtk_text_layout_draw): remove use
of private functions; remove inclusion of private headers.
* gtk/gtktextlayout.c (gtk_text_layout_get_iter_at_line): Add this
function, so we don't need private functions in gtktextdisplay.c
* gtk/gtktextiterprivate.h: underscore-ification
* gtk/gtkwidget.c: Clean up a bunch of docs that said "INTERNAL"
to instead say "only useful to implement widgets"
* gtk/gtkenums.h (GtkMovementStep): Rename GTK_MOVEMENT_CHARS,
GTK_MOVEMENT_POSITIONS to GTK_MOVEMENT_LOGICAL_POSITIONS,
GTK_MOVEMENT_VISUAL_POSITIONS. Resolves bug 40249.
* gdk/x11/gdkwindow-x11.c (gdk_window_impl_x11_set_colormap):
This function was completely broken
* gtk/testtext.c (line_numbers_expose): use gtk_paint_layout
* gtk/gtkvscale.c (gtk_vscale_draw_value): use gtk_paint_layout
* gtk/gtkvruler.c (gtk_vruler_draw_ticks): use gtk_paint_layout
* gtk/gtklabel.c (gtk_label_expose): use gtk_paint_layout
* gtk/gtkhscale.c (gtk_hscale_draw_value): use gtk_paint_layout
* gtk/gtkhruler.c (gtk_hruler_draw_ticks): use gtk_paint_layout
* gtk/gtkcellrenderertext.c (gtk_cell_renderer_text_render): use
gtk_paint_layout
* gtk/gtkaccellabel.c (gtk_accel_label_expose_event): use
gtk_paint_layout
* gtk/gtkstyle.h: Add draw/paint expander to draw tree expanders.
Progress on bug 40103. Add draw_layout to draw a PangoLayout.
(struct _GtkStyleClass): Remove draw_cross, draw_oval, draw_ramp,
which were not implemented.
* gtk/gtktextbuffer.h (struct _GtkTextBufferClass): Add
insert_pixbuf signal. Rename delete_text to delete_range since it
also deletes pixbufs and child anchors. This almost closes bug
40245 (still need to deal with child anchors)
* gtk/gtktextbuffer.c (gtk_text_buffer_class_init): Add
insert_pixbuf, change signal names as appropriate, change types of
signals taking marks/tags to have the specific type, not just
G_TYPE_OBJECT
* gtk/gtkmain.c (gtk_get_current_event_state): Add this function;
closes bug 40051
* gtk/gtkoptionmenu.c (gtk_option_menu_set_history): clean up
unnecessary remove_contents() call
(gtk_option_menu_class_init): add a "changed" signal, closes
bug 40039
(gtk_option_menu_update_contents): emit "changed" if the
active menu item changes
* gtk/gdk-pixbuf-loader.c (gdk_pixbuf_loader_frame_done): fix bad
cast to GtkObject, reported by Jonas Borgstrom
(gdk_pixbuf_loader_finalize): don't close the loader on finalize;
we can't do stuff with side effects in finalize. Instead, spew a
warning if the loader isn't closed.
* gdk/x11/gdkdrawable-x11.c (gdk_drawable_impl_x11_finalize): free
colormap in here, non-X ports probably need to sync to this change
* gdk/x11/gdkdrawable-x11.c (gdk_x11_set_colormap): remove
assertion that colormap != NULL, you can set the colormap to NULL
if you like.
* Makefile.am: remove gtk-config-2.0
* configure.in: Use pkg-config to locate GLib. Remove
separated-out GMODULE_LIBS, GMODULE_CFLAGS; these were not used,
and the gmodule libs/cflags were in GLIB_LIBS GLIB_CFLAGS anyhow.
Use pkg-config to locate Pango. Output correct Pango libs to
gdk-2.0.pc.in. Fix test for FREETYPE_CONFIG (typo fix).
* Makefile.am (pkgconfig_DATA): install only target-specific pc
files
(install-data-local): symlink gtk+-2.0.pc and gdk-2.0.pc to the
X11 pc files
* gtk+-2.0.pc.in (Requires): require the GDK for the current target
unref from here
2001-01-01 Havoc Pennington <hp@redhat.com>
* gtk/gtktexttagprivate.h: uscore-prepend all the stuff in here.
* gtk/gtk-boxed.defs (GtkTextAttributes): Add boxed type for
GtkTextAttributes
* gtk/gtktexttag.c: Fix up GtkTextAttributes copying to close bug
#40246
(gtk_text_attributes_copy_values): rename from
gtk_text_attributes_copy
(gtk_text_attributes_copy): a more standard GTK copy function,
which returns a new object
2000-12-31 Havoc Pennington <hp@pobox.com>
* gtk/gtktextview.c: Rearrange all the
scroll-while-dragging-or-selecting code to be different, not
necessarily better. ;-)
(gtk_text_view_scroll_to_mark): Change this
function to take within_margin as a fraction instead of a pixel
value, and to take alignment arguments (indicating where to align
the mark inside the visible area)
* gtk/testtextbuffer.c (fill_buffer): fix bad cast of GtkTextTag
to GtkObject
* gtk/gtktextiter.c (gtk_text_iter_set_line_offset): change
behavior so that offsets past the end of the line are not
allowed, and an offset equal to the line length moves the iterator
to the next line
(gtk_text_iter_set_line_index): make parallel change
(gtk_text_iter_get_bytes_in_line): add this function
* gtk/gtktextbtree.c (_gtk_text_line_byte_locate): change handling
of byte indexes off the end of the line; byte index at the end of
the line now returns FALSE and doesn't fill in the requested
values, byte index past the end of the line is an error. Also,
don't allow -1 offset anymore, since its meaning is unclear.
This change exposes some bug in visual cursor motion, where we
end up with a huge invalid byte index; needs fixing. Symptom of
bug is a crash when you hit up arrow.
(_gtk_text_line_char_locate): match the change to byte_locate
* gtk/gtktextiter.c (find_by_log_attrs): Handle iteration backward
from start of line properly. fixes bug reported by Mikael
Hermansson where backspace would delete all text before the
cursor.