2000-12-09 James Henstridge <james@daa.com.au>
* gdk/linux-fb/gdkmouse-fb.c (GdkFBMouseDevice): add prot struct
member to hold masks for detecting the start of a protocol packet.
(mouse_devs): add packet start masks for ps2 and ms device types.
Left the mask for fidmour blank, as I have no idea what it should
be.
(handle_mouse_io): skip bytes until we get to the start of a
packet. My Logitech mouse seems to be passing an extra NULL pad
byte, and GPM does a similar thing here.
(gdk_fb_mouse_ms_open): changed error message to not say psaux, as
this is the ms mouse driver.
(gdk_fb_mouse_ms_packet): fix up button handling, which was
completely broken except for button1. It was checking the wrong
bit in the packet for the status of the right mouse button, and
wrongly assuming right == button2 rather than 3. I fixed that and
also added support for middle button (button2).
2000-12-08 Alexander Larsson <alla@lysator.liu.se>
* gdk/linux-fb/gdkkeyboard-fb.c:
New file containing the abstracted keyboard driver. Most code
taken from gdkinput-ps2.c
* gdk/linux-fb/gdkinput-ps2.c:
Removed file.
* gdk/linux-fb/Makefile.am:
Added gdkkeyboard-fb.c, removed gdkinput-ps2.c.
* gdk/linux-fb/gdkcolor-fb.c:
display->fb was renamed to display->fb_fd.
* gdk/linux-fb/gdkcursor-fb.c:
gdk_mouse_get_info -> gdk_fb_mouse_get_info
* gdk/linux-fb/gdkinput.c:
Moved gdk_input_init here from gdkinput-ps2.c
* gdk/linux-fb/gdkmain-fb.c:
display->fb was renamed to display->fb_fd.
Now the tty and the console is opened here instead
of in the keyboard driver. Also check GDK_VT to see what
tty to open.
Move gdk_beep () here from gdkinput-ps2.c
gdk_mouse_get_info -> gdk_fb_mouse_get_info
* gdk/linux-fb/gdkmouse-fb.c:
Add header.
gdk_mouse_get_info -> gdk_fb_mouse_get_info
Return correct keyboard modifiers.
GDK_MOUSETYPE -> GDK_MOUSE_TYPE for consistancy
* gdk/linux-fb/gdkprivate-fb.h:
Add tty and vt info to display.
Add orignal modeinfo storage to display
Update global functions
* gdk/linux-fb/gdkwindow-fb.c:
Added gdk_fb_window_find_focus().
gdk_mouse_get_info -> gdk_fb_mouse_get_info
2000-12-06 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/Makefile.am:
Add gdkmouse-fb.c
* gdk/linux-fb/gdkmouse-fb.c:
New file. Abstracted the mouse drivers a bit.
* gdk/linux-fb/gdkcursor-fb.c:
The cursor hide/show functions was moved here from gdkinput-ps2.c.
* gdk/linux-fb/gdkinput-ps2.c:
Removed old mouse handling code. Moved cursor handling code
to gdkcursor-fb.c, moved gdk_fb_window_send_crossing_events() to
gdkwindow-fb.c. gdk_input_get_mouseinfo was renamed to
gdk_mouse_get_info.
* gdk/linux-fb/gdkmain-fb.c:
Pass NULL pointers for x,y in gdk_mouse_get_info call.
* gdk/linux-fb/gdkprivate-fb.h:
Removed public gdk_fb_find_common_ancestor, added and renamed
functions for the new mouse handling code.
* gdk/linux-fb/gdkwindow-fb.c:
Moved gdk_fb_window_send_crossing_events here. added global
variable gdk_fb_window_containing_pointer. made
gdk_fb_find_common_ancestor static. gdk_input_get_mouseinfo was
renamed to gdk_mouse_get_info.
2000-12-06 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkevents-fb.c:
Update to match latest gmain/gsource changes.
* gdk/linux-fb/gdkinput-ps2.c:
Bogus gdk_keymap_get_entries_for_keycode implementation so that
it links. Will be implemented later.
2000-12-03 Havoc Pennington <hp@pobox.com>
* gdk/Makefile.am: add gdkkeys.[hc]
* gdk/gdkkeys.h, gdk/gdkkeys.c: Move all the keyval stuff to these
files from gdk.h, gdk.c; add GdkKeymap type and operations on it.
* acconfig.h, configure.in: add checks and command line options
for XKB
* gdk/x11/gdkkeys-x11.c: Implement the above functions
* gdk/x11/gdkevents-x11.c (gdk_event_translate): Put the keycode
and group in the key event
* gdk/gdkevents.h (struct _GdkEventKey): Add a hardware_keycode
field with the low-level hardware key code, and a group
field with the keyboard group
* gdk/x11/gdkprivate-x11.h: include config.h for HAVE_XKB,
and declare a couple globals used for keymap handling
* gtk/gtkimcontextsimple.c: Implement ISO 14755 input method,
hold down Shift-Control and type a hex number to get a Unicode
character corresponding to the hex number
(gtk_im_context_simple_get_preedit_string): Fix cursor position
(return bytes not chars)
Tue Dec 5 15:49:31 2000 Owen Taylor <otaylor@redhat.com>
* INSTALL: Fix link to PNG home, remove reference
to fribidi.
* gdk/x11/gdkevents-x11.c: Fix up for new GMain API.
* gdk/win32/gdkevents-win32.c: Fix up for new GMain API. (Not
tested.)
* gtk/gtkcheckmenuitem.c: Permanently turn on
always_show_toggle.
* gtk/gtkclist.c (gtk_clist_get_pixtext): Allow mask to
be NULL. (Vladimir Klebanov, #26545)
* gtk/gtkspinbutton.c (gtk_spin_button_insert_text): Fix
some signed/unsigned comparison problems. (#6510,
David Kaelbling)
* gtk/gtkwidget.[ch] (gtk_widget_is_ancestor): Change
return type to boolean (Oskar Liljeblad, #18648)
2000-12-05 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkcolor-fb.c:
More complete colormap handling. Now GdkRGB work in 8 bpp modes.
* gdk/linux-fb/gdkdrawable-fb2.c (gdk_fb_draw_image):
Must set colormap.
2000-12-05 Alexander Larsson <alla@lysator.liu.se>
* gdk/linux-fb/gdkdrawable-fb2.c (gdk_fb_draw_drawable_3):
Remove old debug g_warning().
(gdk_fb_draw_drawable): The src argument can be either a wrapper
or an implementation, just pass the implementation to draw_drawable_2.
* gdk/linux-fb/gdkprivate-fb.h:
Added GDK_IS_DRAWABLE_IMPL_FBDATA()
* gdk/linux-fb/gdkwindow-fb.c (_gdk_windowing_window_destroy):
clear and invalidate area when window is destroyed.
(send_map_events): Remove old commented out code.
2000-12-05 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkpango-fb.c:
Use italic instead of oblique in font aliases.
* gdk/linux-fb/gdkrender-fb.c (gdk_fb_fill_span_generic,
_gdk_fb_gc_calc_state): Support GDK_XOR, add g_warning for
other unsupported functions.
2000-12-04 Havoc Pennington <hp@redhat.com>
* gtk/gtkpaned.c (gtk_paned_expose): fix this to be sane
* gtk/gtkvpaned.c (gtk_vpaned_expose): Add an expose handler
* gtk/gtkhpaned.c (gtk_hpaned_expose): Add an expose handler
* gtk/gtknotebook.c (gtk_notebook_draw_tab): put in a temporary
hack to avoid infinite loops (queue draw instead of draw) -
Owen has more appropriate fixes in a branch he'll check in later.
* gtk/gtktextiter.c (gtk_text_iter_ends_line): handle paragraph
separator, CR, and CRLF as line ends
* gtk/gtktextbtree.c (gtk_text_btree_insert): on insertion, break
into lines using pango_find_paragraph_boundary(); other bits of
the widget are still going to be broken if the boundary isn't '\n'
though
2000-12-04 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkfont-fb.c (gdk_text_width): Divide size by 2, not
multiply.
* gdk/linux-fb/gdkpango-fb.c:
Copied some 26.6 scaling macros from pango to clean up the rounding.
(pango_fb_font_get_glyph_info): Correct sign on x value.
* gdk/linux-fb/gdkprivate-fb.h:
Removed unreferenced external functions.
* modules/linux-fb/Makefile.am: Use ` instead of '.
* modules/linux-fb/basic.c:
Remove dead code. In particular the dummy lang engine which broke all
pango layouts in GtkFB. Don't include tables-big.i anymore.
* modules/linux-fb/tables-big.i:
Upgrade to latest version from pango. Left for reference, basic_ranges
moved to basic.c.
2000-11-30 Havoc Pennington <hp@pobox.com>
* gtk/gtktextdisplay.c (gtk_text_layout_draw): don't create
dangling pointers to the appearance attributes from the
line display
* gdk/gdkdraw.c (gdk_drawable_get_image): allow negative
width/height to mean "full width/height of drawable"
* gtk/gtktextview.h, gtk/gtktextview.c: Implement double/triple
click to select word/line
* gtk/gtktextiter.c (test_log_attrs): include paragraph delimiters
when getting log attrs. Get a slice, so that pixmaps and stuff
are properly handled.
* gtk/gtktextbuffer.c (paste): Fix pasting to work properly if you
paste into the selection (replaces selection now, previously
crashed or added to selection). Reveals longstanding btree bug -
select multiple lines, middle-click on the selection, boom. This
isn't related to my changes though.
* gtk/gtkentry.c (gtk_entry_move_forward_word): Update to reflect
PangoLogAttrs changes
(gtk_entry_move_backward_word): ditto
* gtk/gtktextlayout.h, gtk/gtktextlayout.c: Make the iter motion
functions return bool whether the iter moved onto a
dereferenceable position.
* gtk/gtktextview.h, gtk/gtktextview.c: Add a bunch of public
functions for motion in terms of display lines.
* gtk/gtktextmark.c (gtk_text_mark_get_buffer): Add function to
get the buffer a mark is inside
2000-12-01 <alexl@redhat.com>
* gdk/linux-fb/Makefile.am:
* modules/linux-fb/Makefile.am:
Freetype 2 final uses freetype-config
* gdk/linux-fb/gdkpango-fb.c:
Upgrade to use Freetype 2 final.
More flexible support for font aliases, this also fixes a bug with
GtkFontSelector, as the aliases must be visible in the font/family list,
or GtkFontSelector reads uninitialized memory.
2000-11-30 Tor Lillqvist <tml@iki.fi>
Changes by Hans Breuer:
* gdk/win32/gdkwindow-win32.c (gdk_window_set_geometry_hints):
Dont't use negative width and height as max_hints. This fixes
Owen's recent testgtk changes for win32.
* gdk/win32/gdkgc-win32.c (gdk_win32_hdc_get,
gdk_win32_hdc_release): These are exported and may be called with
other drawable types than our GdkDrawableImplWin32 (?).
* gdk/gdkwindow.c: Backing store appears to work on Windows now,
so always #define USE_BACKING_STORE.
* gtk/gtktextdisplay.c (render_layout_line): Use g_print instead
of printf for debugging output.
* gtk/gtktextlayout.c (allocate_child_widgets): Ditto.
* gtk/gtktextview.c (gtk_text_view_child_allocated): Ditto.
* gtk/gtkmain.h (GTKMAIN_C_VAR): Win32 fix for dllimport
declaration.
* gtk/gtktexttypes.h: Ditto.
* gtk/gtklabel.c (gtk_label_set_markup_with_accel): Return a value
(GDK_VoidSymbol) also if in case of arg check failure.
* gtk/gtkimcontextsimple.c
(gtk_im_context_simple_get_preedit_string): Don't assign cursor
position to the pointer, but to the variable it points to.
* gtk/makefile.msc.in (DEFINES): Define GTK_VERSION.
* gtk/gtk.def: Updates.
2000-11-29 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkfont-fb.c (gdk_font_from_description):
Set the size of the font from the description.
(gdk_text_width): Gross hack that calculates the width
of text by text_length * size/2. This is necessary because
GtkLabel does some ugly gtk_string_width call to calculate
an good size.
(linux-fb/gdkprivate-fb.h): Removed unused field FT_Face.
2000-11-29 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkwindow-fb.c (_gdk_windowing_window_clear_area):
If you pass width or height == 0 to gdk_window_clear_area they
should be calculated from the window size.
2000-11-29 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkinput-ps2.c (move_pointer): If there is
a grab, but no grab-cursor, use the cursor from the grabbed
window. (gdk_fb_window_send_crossing_events): Send normal
enter/leave notifications if grab and owner_events == TRUE.
2000-11-29 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkinput-ps2.c (send_button_event):
Do implicit button grabs, even if the window doesn't
want the event.
(gdk_fb_window_send_crossing_events): If there is a
grab, only the grabbed window gets normal enter/leave
notifications. On ungrab go from grabbed window to current.
Don't send any notification to b when propagating from c -> b.
If setting a grab on window, don't set prev_window.
(handle_mouse_input): Send enter/leave events to the window the
mouse is over, not the grabbed one.
2000-11-28 Alexander Larsson <alla@lysator.liu.se>
* gdk/linux-fb/gdkwindow-fb.c (gdk_fb_window_move_resize):
The cursor should be hidden if it is part of either the
source or destination region. Not only if it is in both.
(gdk_window_set_transient_for): Silence warnings.
2000-11-23 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkselection-fb.c:
Initial selection implementation.
* gtk/gtkselection.c:
if GDK_WINDOWING_FB defined, include linux-fb/gdkfb.h and look up
requestor in gtk_selection_request.
* gdk/linux-fb/gdkfb.h, gdk/linux-fb/gdkglobals-fb.c:
Added gdk_selection_property atom.
* gdk/linux-fb/gdkprivate-fb.h:
Export _gdk_selection_window_destroyed.
Removed mask_off_x/y from GdkCursorPrivateFB.
Removed hbearing, added top, left to PangoFBGlyphInfo.
* gdk/linux-fb/gdkwindow-fb.c (_gdk_windowing_window_destroy):
Call _gdk_selection_window_destroyed
(_gdk_windowing_window_init): Don't call gdk_cursor_new() before
the root window has been created.
(static_dx_hack, static_dy_hack, compare_draw_rects,
gdk_fb_window_move_resize): Remove unnecessary sort of rectangles
in region. They are already sorted. Instead just traverse them in
reverse if draw_direction < 0.
* gdk/linux-fb/gdkinput-ps2.c (send_button_event):
Double-clicks must be sent after the normal button_press.
(gdk_fb_cursor_unhide): Remove usage of mask_off_x/y. Clean up.
* gdk/linux-fb/gdkgeometry-fb.c (gdk_window_scroll):
Pass _gdk_fb_screen_gc instead of NULL.
* gdk/linux-fb/gdkmain-fb.c (_gdk_windowing_init_check):
Initialize gdk_selection_property.
(gdk_event_make): Remove unused code.
* gdk/linux-fb/gdkcursor-fb.c:
Make the pixmap for the cursor the same size as the mask. Also remove
the mask_off_x/y fields in GdkCursorPrivateFB and combine
_gdk_cursor_new_from_pixmap() and gdk_cursor_new_from_pixmap()
Now the whole cursor is visible.
* gdk/linux-fb/gdkdrawable-fb2.c (gdk_fb_draw_drawable_3):
Fix bug where xdest+height instead of ydest+height was used
to calculate if the source and dest overlapped. This fixes the
redraw bug when the main window in testgtk was scrolled when
partially covered by a tall window.
Copy rectangles in region in order depending on draw_direction.
Also moved the draw_direction flipping of start_y and end_y into
the gc functions, as this might not be what all of them want.
(gdk_fb_draw_lines): Support dashed lines.
(gdk_fb_draw_glyphs): Clean up glyph placement. Also fix positioning
so that the text is positioned correctly (was 1 pixel high).
gdk/linux-fb/gdkgc-fb.c:
Initialize cap_style to GTK_CAP_BUTT. This fixes a problem where
all lines were drawn a pixel to short. Also checked the default of
the rest of the values, and they're the same as X now.
* gdk/linux-fb/gdkpango-fb.c (pango_fb_font_get_glyph_info):
Clean up pixel positioning of the glyphs. Just use bgy->top and
bgy->left. Also used PANGO_PIXEL where appropriate and added 0.5
to all divisions to get correct rounding behaviour.
* gdk/linux-fb/gdkrender-fb.c (gdk_fb_draw_drawable_generic,
gdk_fb_draw_drawable_memmove, gdk_fb_draw_drawable_aa_24):
Moved start_y/end_y flip into draw_drawable implementations.
Flip also x rendering when draw_direction < 0.
Remove unneccesary multiply with draw_direction.
2000-11-22 Alexander Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkpango-fb.c (pango_fb_font_get_metrics):
Correct calculation of font metrics. Now GtkEntrys have sane
size.
* gdk/gdktypes.h:
Add new type GdkSpan
* docs/reference/gdk/gdk-sections.txt,
docs/reference/gdk/tmpl/regions.sgml, gdk/gdkregion-generic.c,
gdk/gdkregion.h:
Implement and document gdk_region_spans_intersect_foreach.
* gdk/linux-fb/Makefile.am, gdk/linux-fb/gdkrender-fb.c:
Add new file gdkrender-fb.c which contains all core
rendering code.
Add gdk_fb_fill_rectangle_generic (old rectangle code) and
gdk_fb_fill_rectangle_simple_16, gdk_fb_fill_rectangle_simple_32
(optimized rectangle fillers).
* gdk/linux-fb/gdkdrawable-fb2.c:
Move all rendering code to gdkrender-fb.c.
Change from using GdkRectangles and GdkSegments for spans to GdkSpan.
Use the new span intersection functions in gdk_fb_fill_spans.
gdk_fb_draw_rectangle() clips filled rectangles and calls
gc->fill_rectangle with the result.
gdk_fb_fill_spans() gets extra argument "sorted".
* gdk/linux-fb/gdkevents-fb.c:
Remove unused includes and defines.
New function gdk_fb_get_time() to get correct time for events.
* gdk/linux-fb/gdkinput-ps2.c:
Use gdk method of generating multiple-clicks (gdk_event_button_generate)
Make sure to set the time of all events.
* gdk/linux-fb/gdkmain-fb.c:
Use gdk_fb_get_time ().
* gdk/linux-fb/gdkprivate-fb.h:
New virtual GC calls: fill_span & fill_rectangle.
Export gdk_fb_get_time().
gdk_fb_fill_spans() gets extra argument "sorted".
* gdk/linux-fb/mi*.c:
Use GdkSpan instead of GdkRectangle.
Pass correct sorted to gdk_fb_fill_spans. (sorted value taken
from XFree 4 source)
2000-11-20 Alexander Larsson <alla@lysator.liu.se>
* gdk/linux-fb/gdkdrawable-fb2.c:
Removed unused arguments from gdk_fb_drawable_get_pixel().
* gdk/linux-fb/gdkinput-ps2.c (handle_input_ps2):
Renamed fidur specific mouse packet data in MouseDevice to
generic. Used it in ps2 mouse handling code to avoid blocking
reads.
Sat Nov 18 11:58:17 2000 Owen Taylor <otaylor@redhat.com>
* gdk/gdkrgb.c (gdk_rgb_allocate_images): Fix
off-by-one error when destroying allocated segments
on failure. (Elliot)
2000-11-17 Tor Lillqvist <tml@iki.fi>
* gdk/gdkevents.h: Add comment that GdkXEvent isn't only for XEvent,
but in general for window system specific events.
* gtk/gtk.def
* gtk/makefile.mingw.in
* gtk/makefile.msc.in: Update.
Wed Nov 15 18:39:40 2000 Owen Taylor <otaylor@redhat.com>
* **/Makefile.am : remove unecessary rules for win32-specific
config-substituted targets. If you want these rules, use
--enable-maintainer-mode (called automatically by autogen.sh).
Stops a lot of unneccessary make-time warnings.
* gtk/gtktext{layout,display}.c: Factor in total width as
well as screen when figuring alignment for word-wrap as well as
no wrap; this is necessary to handle lines that cannot be wrapped
at all.
2000-11-15 Alexander Larsson <alla@lysator.liu.se>
* gdk/linux-fb/gdkprivate-fb.h:
Added virtual functions set_pixel, get_color,
fill_span and draw_drawable to the GC.
Added global _gdk_fb_screen_gc to use instead of
NULL when drawing to the screen.
Added _gdk_fb_gc_calc_state() prototype.
* gdk/linux-fb/gdkgc-fb.c:
Call _gdk_fb_gc_calc_state() on any gc state change.
* gdk/linux-fb/gdkglobals-fb.c:
Add _gdk_fb_screen_gc
* gdk/linux-fb/gdkdrawable-fb2.c:
_gdk_fb_gc_calc_state() calculates best functions
for the GC state and depth.
Moved bpp specialized code to separate functions.
Added optimized 24 bpp AA draw_drawable.
* gdk/linux-fb/gdkevents-fb.c:
Silence gcc warning.
* gdk/linux-fb/gdkimage-fb.c:
Use _gdk_fb_screen_gc
* gdk/linux-fb/gdkwindow-fb.c:
Init and use _gdk_fb_screen_gc
* gdk/linux-fb/mitypes.h:
Remove unused types.
2000-11-14 Havoc Pennington <hp@redhat.com>
* gdk/gdkpango.c (gdk_draw_layout_line): Draw underlines one pixel
higher.
* gtk/gtktextdisplay.c (render_layout_line): Take rise into
account. Also, render rise, underline, background, etc. for
pixbufs as well as text. Also, draw underlines one pixel higher.
* gtk/gtktextlayout.c (gtk_text_layout_get_line_display): Add a
PangoAttribute for the rise, so it gets drawn properly. Also,
add the GtkTextAppearance attribute for pixbuf/widget segments
as well; we should go ahead and have rise, underline, background,
stipple work for those
* gtk/gtktexttag.c: Rename "offset" property to "rise" to match
Pango
2000-11-13 Havoc Pennington <hp@redhat.com>
* gtk/gtkimmodule.c (gtk_im_module_init): Free the filename of
the module file.
* gtk/gtktexttag.c (gtk_text_attributes_copy): fix memory leak of
dest->language
* gtk/testtext.c: Test pixels above/below/inside paragraphs
settings
* gtk/gtktextview.c: Implement object args and setters/getters for
all the aspects of the GtkTextAttributes that are not set from
GtkWidget attributes. This is spacing, justification, margins,
etc.
(gtk_text_view_set_arg)
(gtk_text_view_get_arg): implement get/set for editable, wrap mode
args
(gtk_text_view_class_init): Add args for justify, left_margin,
right_margin, indent, and tabs
* gtk/gtktextlayout.c (set_para_values): fix to display indent
attribute properly
* gtk/gtktexttag.c: Remove left_wrapped_line_margin attribute,
replace with indent attribute
* gtk/gtktextlayout.c (set_para_values): multiply indent by
PANGO_SCALE
* gtk/gtktextdisplay.c (render_para): Use PangoLayoutIter,
rearranging code to do that
(gtk_text_layout_draw): Pass in the y for the whole LineDisplay,
i.e. don't subtract the top_margin first, just to keep
all margin-futzing in one place.
* gdk/gdkpango.c (gdk_draw_layout): Use PangoLayoutIter
* gtk/gtktextlayout.c (gtk_text_layout_get_iter_location): Remove
special case of last line, Pango now handles this itself.
(gtk_text_layout_get_iter_at_pixel): Fix incorrect clamp of the
Y coordinate
(gtk_text_layout_move_iter_to_x): port to use PangoLayoutIter
(find_display_line_above): wasn't moving the byte index as it
iterated over lines, so always returned byte 0. Also, port to use
PangoLayoutIter.
(find_display_line_below): same problem as
find_display_line_above. Also, port to use PangoLayoutIter.
Sun Nov 12 22:15:35 2000 Robert Brady <robert@suse.co.uk>
* gtk/gtkfileselection.c, gdk/win32/gdkfont-win32.c:
g_filename_{to,from}_utf8 now takes an extra parameter.
* gtk/gtkcalendar.c (gtk_calendar_init): Convert output of
strftime into UTF-8.
(column_from_x, gtk_calendar_paint_day_names): Support RTL
calendars.
(gtk_calendar_paint_day_names): Draw day names in the right
place.
