2004-10-26 Anders Carlsson <andersca@imendio.com>
* gtk/gtktextbuffer.c: (gtk_text_buffer_finalize),
(create_clipboard_contents_buffer), (clipboard_get_contents_cb),
(clipboard_clear_contents_cb), (cut_or_copy):
Rewrite clipboard handling so that the clipboard contents won't be
freed when the text buffer is finalized. Also add clipboard manager support.
Fixes#95496.
Thu Oct 21 15:01:09 2004 Owen Taylor <otaylor@redhat.com>
#155952
* gtk/gtkentry.c: Fix checking the wrong position for
the backspace_deletes_character PangoLogAttr.
* gtk/gtktextbuffer.[ch] gtk/gtk.symbols (gtk_text_buffer_backspace):
Move backspace logic from GtkTextView to here, check
backspace_deletes_char.
* gtk/gtktextview.c: Use gtk_text_buffer_backspace().
Mon Aug 9 12:48:04 2004 Matthias Clasen <maclas@gmx.de>
Add hidden aliases for exported symbols which are
used internally in order to get rid of many PLT
entries. (#145519, Arjan van de Ven)
* gtk/Makefile.am: Add rules to generate gtk.def and
from gtk.symbols, and make make check check the abi
with abicheck.sh.
(gtk_private_h_sources): Add gtkinternals.h
(gtk_built_private_headers): Add gtkalias.h
(gtk_extra_sources): Add gtk.symbols
(EXTRA_DIST): Add makegtkalias.pl and abicheck.sh
* gtk/gtk.symbols: New file. Definition of the GTK+ ABI.
The file can be processed by cpp to filter out certain
subsets of symbols.
* gtk/abicheck.sh: New file. Script to check the actually
symbols exported from libgtk-x11.2.0.so against the symbols
found in gtk.symbols.
* gtk/makegtkalias.pl: New file. Perl script to generate the
header containing the alias definitions for internally used
exported symbols from a list of symbols.
* gtk/gtkinternals.h: New file. An uninstalled header listing
symbols which must be exported for some reason and do not appear
in any other header.
* gtk/*.c: Include gtkalias.h
Sat Mar 13 10:34:03 2004 Owen Taylor <otaylor@redhat.com>
* gtk/gtktextview.c gtk/gtktextbuffer.c: Revert last change;
it causes problems for pastes from other applications; see
comments in bugzilla for #81880.
Sat Mar 13 02:55:51 2004 Matthias Clasen <maclas@gmx.de>
Fix middle button pasting in the TextView (#81880, reported
by Evert Verhellen, patch by Paolo Borelli):
* gtk/gtktextview.c (gtk_text_view_button_press_event): Retrieve
the insert mark and move the cursor to it making sure of also
scroll the window if needed.
* gtk/gtktextbuffer.c (pre_paste_prep): Move the insert mark
to the insertion point.
2004-03-05 Federico Mena Quintero <federico@ximian.com>
Fixes#136082 and #135265, patch by Morten Welinder.
* configure.in: Use AC_SYS_LARGEFILE.
* */*.c: #include <config.h>
Wed Feb 18 02:03:47 2004 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextbuffer.c (gtk_text_buffer_class_init): Document some
peculiarities of the ::delete_range signal. (#132135, Grant Gayed)
Fri Jan 16 23:59:01 2004 Matthias Clasen <maclas@gmx.de>
The first part of the fix for #114351 (see also
gdk-pixbuf/ChangeLog and po/ChangeLog):
* gtk/gtkintl.h:
* gdk-pixbuf/gdk-pixbuf-i18n.h:
* gdk/gdkintl.h: Define P_() for property blurbs and nicks.
* gdk/gdkdisplaymanager.c:
* gdk-pixbuf/gdk-pixbuf.c:
* modules/input/gtkimcontextxim.c:
* gtk/*.c: Mark property blurbs and nicks with P_().
* po/Makefile.in.in: Add --keyword=P_ to the xgettext
invocation, since property blurbs and nicks are
now marked with P_().
2003-01-06 Matthias Clasen <maclas@gmx.de>
Implement a utility function proposed in #102534:
* gtk/gtktextbtree.h:
* gtk/gtktextbtree.c (_gtk_text_btree_select_range): New function.
(_gtk_text_btree_place_cursor): Now a simple wrapper around
_gtk_text_btree_select_range().
* gtk/gtktextbuffer.h:
* gtk/gtktextbuffer.c (gtk_text_buffer_select_range): New function.
(gtk_text_buffer_place_cursor): Now a simple wrapper around
gtk_text_buffer_select_range().
2002-12-24 Matthias Clasen <maclas@gmx.de>
* gtk/gtktextbuffer.c (paste_from_buffer):
(clipboard_text_received): Let the user action span the insertion
and the deletion of the old selection. (#82844)
2002-09-30 Daniel Elstner <daniel.elstner@gmx.net>
* gtk/gtktextbuffer.c: Add construct-only property "tag_table" and make use of it in gtk_text_buffer_new(). (#70227)
Mon May 28 13:28:10 Shivram U <shivaram.upadhyayula@wipro.com>
* gtk/gtktextbuffer.c (selection_data_get_buffer): Check if the owner
got is of type GDK_WINDOW_FOREIGN. If so the owner is not in-process,
and so return NULL.
Mon Apr 29 18:28:00 2002 Owen Taylor <otaylor@redhat.com>
Integrate Erwann Chenede's multihead changes for the gtk/ directory.
* gtk/gtkclipboard.[ch]: Add gtk_clipboard_get_for_display(),
make internals multihead aware.
* gtk/gtkcolorsel.[ch]: Add
gtk_color_selection_set_change_palette_with_screen_hook () [ugh!]
make up for non-multihead safety of
gtk_color_selection_set_change_palette_hook()
* gtk/gtkinvisible.[ch] gtk/gtkmenu.[ch] gtkwindow.[ch]: Add
gtk_{invisible,menu,window}_set_screen(); add "screen" properties
for GtkWindow and GtkMenu.
* gtk/gtkplug.[ch]: Add gtk_plug_construct_for_display(),
gtk_plug_new_for_display(). Multihead fixes.
* gtk/gtkselection.[ch]: Add gtk_selection_owner_set_for_display(),
make internals multihead aware.
* gtk/gtksettings.[ch]: Add gtk_settings_get_for_screen(), get
rid of now-useless gtk_settings_constructor().
* gtk/gtkstyle.[ch]: Add gtk_style_get_font_for_display(), fix
check/radio button indicators bitmap handling to be multihead
safe.
* gtk/gtkwidget.[ch]: Add gtk_widget_get_screen(), gtk_widget_has_screen(),
gtk_widget_get_display(), gtk_widget_get_clipboard(),
gtk_widget_get_root_window().
* gtk/gtkbindings.c gtk/gtkbutton.c gtk/gtkclist.c gtk/gtkcombo.c
gtk/gtkctree.c gtk/gtkdnd.c gtk/gtkfilesel.c gtk/gtkgamma.c
gtk/gtkhandlebox.c gtk/gtkhsv.c gtk/gtkimcontext.c gtk/gtklabel.c
gtk/gtklist.c gtk/gtkmain.c gtk/gtkmenuitem.c gtk/gtkmenushell.c
gtk/gtknotebook.c gtk/gtkoldeditable.c gtk/gtkoptionmenu.c
gtk/gtkpaned.c gtk/gtkpreview.c gtk/gtksocket.c gtk/gtktext.c
gtk/gtktextbuffer.c gtk/gtktextview.c gtk/gtktipsquery.c
gtk/gtktooltips.c gtk/gtktreeview.c gtk/gtktreeviewcolumn.c:
misc mechanical multihead-safety fixes.
* gtk/gtkclipboard.c: Use a GtkImage rather than a pixmap for
the dropper, look up the color palette only at realization time,
other multihead fixes.
* gtk/gtkcombo.c (gtk_combo_unrealize): Popdown the list when
unrealizing.
* gtk/gtkentry.c: Only claim ownership of the primary selection
when realized, misc multihead fixes.
* gtk/gtkfontsel.c: Only fill in fonts when attached to a screen,
fix gtk_font_selection_get_font() for multihead.
* gtk/gtkgc.c: make the depth => drawable hash per-screen.
* gtk/gtkinvisible.c: Add a constructor that realizes the
widget, so we get a realized widget with g_object_new() as
well gtk_invisible_new() as before.
* gtk/gtkmain.c: Get rid of unused gtk_visual/gtk_colormap
variables.
* gtk/gtktextdisplay.c: Add warnings if stipple bitmaps
are used on the wrong screen.
* gtk/gtktoolbar.c: Make handling of GtkSettings-based layout
read properties and connect to settings when the screen is changed,
rather than on init/finalize.
* gtk/gtkwindow.c: Fix icon handing to be multihead safe ...
default icon pixmaps/mask are only shared between windows on the
same screen. Misc multihead fixes.
Sat Apr 27 13:49:53 2002 Owen Taylor <otaylor@redhat.com>
* gtk/gtkclipboard.c (gtk_clipboard_get_for_display):
Update docs to reference GDK_SELECTION_CLIPBOARD rather GDK_NONE.
2002-04-29 Alex Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkproperty-fb.c (gdk_property_get):
Fix silly bug, noticed by Sven Neumann.
Sun Apr 28 22:43:55 2002 Jonathan Blandford <jrb@gnome.org>
* gtk/gtktreemodelsort.c (gtk_tree_model_sort_set_sort_func): Fix
so that you can set a new sort func.
2002-03-22 Havoc Pennington <hp@pobox.com>
* gdk/x11/gdkfont-x11.c (gdk_fontset_load): add more explanatory
text to the error message about missing charsets, and use
g_printerr() not g_warning() since this is typically not a
programming error (we do not export any API to ask whether
a font set will have missing charsets so apps realistically can't
do anything other than try the gdk_fontset_load())
* gtk/gtktextview.c (gtk_text_view_key_press_event): return FALSE
if the text view isn't editable and the user presses Return,
so default buttons and such can be activated, #74937
* gtk/gtktextbuffer.c (paste_from_buffer): don't insert
if the insertion point is not editable and the paste
is interactive, #74125
* gtk/gtkwindow.c (gtk_window_move_resize): enhance the #if 0
debug spew
* gtk/gtktextbuffer.c (cut_or_copy): only remove the previous
cut/copied data right before replacing it, when we know we are
going to replace it. Fixes#74049
2002-02-24 Havoc Pennington <hp@pobox.com>
* gtk/gtktextbuffer.c (parent_class): parent_class variable was
GtkObjectClass instead of GObjectClass
* gtk/gtktextview.c (widget_to_buffer): fix this the way
buffer_to_widget was fixed, to avoid duplicating
the code that computes text_window->allocation.x/y
2002-02-23 Havoc Pennington <hp@redhat.com>
* gtk/gtktextbuffer.c (save_range): change gravity of start/end
marks so that text added at either end of the range doesn't end up
inside the range.
(gtk_text_buffer_real_insert_range): fix to handle pasting a range
into itself. #71412
2002-02-13 Havoc Pennington <hp@redhat.com>
* gtk/gtktextview.c (gtk_text_view_paint): just go ahead and flush
all the first validate stuff if it hasn't been done, presumably
someone called process_updates at a weird time.
* tests/testtext.c (do_apply_colors): terminate on >= end, not >
end, avoids infinite loop when end is at the end of the buffer.
* gtk/gtktextbtree.c (_gtk_text_btree_delete): when creating a
line data, we were adding it to the wrong line ("line" instead of
"start_line")
Tue Jan 8 15:53:28 2002 Owen Taylor <otaylor@redhat.com>
* gtk/gtkdnd.c (gtk_drag_find_widget): Fix coordinate
translations, once and for all.
* gtk/gtktextbuffer.c (paste_from_buffer): Free
the ClipboardRequest structure. (#66198, HideToshi
Tajima)
2002-01-01 Havoc Pennington <hp@pobox.com>
* gtk/framebuffer.sgml: move README.linux-fb in here
* gtk/tmpl/gtkpreview.sgml: explain what to use instead
* gtk/tmpl/gtkseparator.sgml: typo fix
* gtk/tmpl/gtkstock.sgml: add some overview docs
* gtk/Makefile.am (content_files): add new files
* gtk/changes-1.2.sgml: move Changes-1.2.txt in here
* gtk/changes-2.0.sgml: move Changes-2.0.txt in here
* gdk/tmpl/threads.sgml: mention gdk_threads_init() in the
overview docs, copy in the examples from the FAQ
* gtk/gtk-docs.sgml: change DTD to 3.1, and add
question_index.sgml and changes-1.2, changes-2.0
* gtk/tmpl/gtkdrawingarea.sgml: fixups to reflect 2.0 changes
* gtk/question_index.sgml: new section with question-based
index of the manual
* gtk/text_widget.sgml: fix some cross-references
2002-01-01 Havoc Pennington <hp@pobox.com>
* docs/README.linux-fb: note that this file is obsolete
* docs/Changes-2.0.txt, docs/Changes-1.2.txt: Add notes to these
files that they should not be edited and look in the reference
manual instead. Probably these files should just be replaced by
the note, and their main contents deleted.
* gtk/gtktextview.c: docs
* gtk/gtktextmark.c: docs
* gtk/gtktextchild.c: docs
* gtk/gtktextbuffer.c: docs stuff
* gtk/gtkclipboard.c (gtk_clipboard_get): fool with docs to maybe
give people more leads in sorting out PRIMARY vs. CLIPBOARD
2001-12-04 Havoc Pennington <hp@redhat.com>
* gtk/gtktextbtree.c (gtk_text_btree_remove_tag_info): remove
g_assert_not_reached() that was bogus, since we demand-create the
tag info. reported by Chris Phelps
Jump through assorted hoops to fix bug from Chris Phelps where
removing tags from the table resulted in btree trying to
access tag->table
* gtk/gtktextbuffer.c: set up mechanics of adding/removing
ourselves to the tag table
* gtk/gtktexttagtable.c (_gtk_text_tag_table_add_buffer)
(_gtk_text_tag_table_remove_buffer): private cruft to
let us notify buffer of disappearing tags
* gtk/gtktexttag.h: remove BTreeNode typedef from this public
header, put it in tagprivate
* gtk/gtktextbtree.c (_gtk_text_btree_new): don't connect to
tag_removed; it's emitted too late.
(_gtk_text_btree_notify_will_remove_tag): rename tag_remove_cb to
this
Padding for ABI-compat expansion
* gtk/gtktexttag.h (struct _GtkTextAttributes): pad this
(struct _GtkTextAppearance): one pad in here too
* gtk/gtktextlayout.h (struct _GtkTextLayoutClass): padding here
* gtk/gtktextview.h (struct _GtkTextViewClass): more padding,
since action signals etc. seem pretty likely
* gtk/gtktextbuffer.h (struct _GtkTextBufferClass): padding
* gtk/gtktexttag.h (struct _GtkTextTagClass): padding
* gtk/gtktexttagtable.h (struct _GtkTextTagTableClass): padding
Sat Nov 17 18:26:45 2001 Owen Taylor <otaylor@redhat.com>
* gtk/Makefile.am gtk/gtkmarshal.list gtk/gtkmarshalers.list
gtk/*.c gtk/gtksignal.h: Make gtkmarshal.list/gtkmarshal.h
only for compatibility with GTK+-1.2; and deprecate it;
put all marshalers we actually use into gtkmarshalers.list
and use the _gtk_marshal_ prefix for these marshalers.
Wed Oct 31 18:23:47 2001 Owen Taylor <otaylor@redhat.com>
* gtk/gtkoptionmenu.c (gtk_option_menu_detacher):
Add a "menu" property and notify on it. (#62798,
Padraig O'Briain)
* gtk/gtkselection.[ch] gtk/{gtkentry.c, gtkfilesel.c,
gtkoldeditable.c, gtktextbuffer.c, gtktextview.c}:
Fix set_text to take a gchar, not a guchar, and to have
a len argument.
2001-10-27 Hans Breuer <hans@breuer.org>
* gtk/gtkbbox.c gtk/gtkctree.c gtk/gtkhbbox.c
gtk/gtkimmulticontext.c gtk/gtklabel.c gtk/gtkliststore.c
gtk/gtkmenu.c gtk/gtkpaned.c gtk/gtkrc.c gtk/gtkscale.c
gtk/gtkstyle.c gtk/gtktextbuffer.c gtk/gtktextlayout.c
gtk/gtktexttag.c gtk/gtktexttagtable.c gtk/gtktextview.c
gtk/gtktreestore.c gtk/gtkvbbox.c :
to simplify parsing for exported functions:
- made implementation signature static, when the local
prototype already was
- put the functions return value on it's own line
- added as space between the function name and the
opening bracket
* gtk/gtk.def : added the remaining exported functions
2001-10-24 Havoc Pennington <hp@redhat.com>
* gtk/gtktextbuffer.c (clipboard_clipboard_buffer_received):
remove hack to strip off the bogus newline, since we killed the
bogus newline; fixes#61779
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/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.
2001-09-24 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.
2001-09-07 Havoc Pennington <hp@redhat.com>
* gtk/gtktextlayout.c (gtk_text_layout_get_lines): remove some
debug code that seems to have caused a breakpoint in valid cases
* gtk/gtktextbtree.c (_gtk_text_btree_add_view): set the prev
pointer on the first view when adding the second view, fixes
crash when closing gtk-demo text test with active selection
* gtk/gtktextbuffer.c
(gtk_text_buffer_remove_selection_clipboard): don't leave dead
clipboards in the list of clipboards - probably fixes#59836
Wed Aug 29 20:40:58 2001 Owen Taylor <otaylor@redhat.com>
* gtk/gtktextbuffer.[ch] (gtk_text_buffer_add/remove_selection_clipboard):
Instead of always mirroring the selection to a single PRIMARY
selection, allow it to be mirrored to any number of clipboards.
* gtk/gtktextbuffer.[ch] (gtk_text_buffer_paste_primary): Remove,
just use gtk_text_buffer_paste_clipboard with the appropriate clipboard.
* gtk/gtktextbuffer.[ch] (gtk_text_buffer_cut/copy/paste_clipboard): Add a
GtkClipboard argument, and for paste_clipboard, the
@override_location argument from @paste_primary.
* gtk/gtktextview.c: Adapt to above change.
Fri Aug 24 12:02:08 2001 Owen Taylor <otaylor@redhat.com>
* gtk/gtktextbuffer.c (gtk_text_buffer_new): Remove
a stray g_object_ref() left over from gtk_object_ref/sink.
(Pointed out by Josh Pritikin.)
2001-06-14 Havoc Pennington <hp@redhat.com>
* gtk/gtkwindow.c (window_group_cleanup_grabs): fix other typo
* gtk/gtkwidget.c (gtk_widget_propagate_state): fix typo
* gtk/gtktextbtree.c: don't leak node data all over the place.
* demos/gtk-demo/main.c (main): create fontify tags for the right
buffer
* gtk/gtktextbuffer.c, gtk/gtktexttagtable.c: enhance docs
to mention tags in the same table can't have the same name,
suggested by Skip Montanaro
2001-06-11 Havoc Pennington <hp@redhat.com>
* gtk/gtktexttagtable.c (gtk_text_tag_table_add): improve warning
for trying to add two tags with same name to the tag table
* demos/gtk-demo/main.c (main): fix colors ;-)
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
2001-06-08 Havoc Pennington <hp@redhat.com>
* gtk/gtktextbuffer.c (gtk_text_buffer_remove_all_tags): geez,
don't call g_list funcs on GSList
* gtk/gtkwidget.c (gtk_widget_child_focus): replaces
gtk_container_focus(), since some widgets have focusable locations
which are not other widgets. These widgets should not have to be
containers just to manage the focus. For example, GtkHSV is
currently a container for no good reason. Also, this cleans
up the "if (is_container && is_sensitive && is_drawable)
container_focus ()" mess in widget implementations.
* gtk/gtkcontainer.c (gtk_container_focus): deprecate this
function, and have it just call gtk_widget_child_focus().
* gtk/gtkhsv.c: derive from widget not container
Throughout: fix to reflect GtkContainer::focus change
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.
