When handling overstrikes, try to guess a bit better how overstrike glyphs

Sun May  7 00:00:00 2000  Owen Taylor  <otaylor@redhat.com>

	* modules/basic/basic.c (basic_engine_shape): When
	handling overstrikes, try to guess a bit better
	how overstrike glyphs are positioned in the font.
	(Now works with more of glyphs from clearlyu, though
	not the Hebrew accents in that font)

	* examples/HELLO.utf8: Insert tab characters to
	keep the columns in the right order for either
	global direction. Insert left-to-right marks in
	a few places to keep leading and trailing punctuation
	in the right place.

	* modules/basic/basic.c (basic_engine_shape): Don't
	show RLM and LRM

	* pango/glyphstring.c (pango_glyph_string_extents): Use
	the logical width set in the glyph string rather than
	that from the font's metrics.

	* pango/pangox.c (pango_x_render): Treat glyph index
	0 as special - representing invisible, 0 size
	character. We need this sometimes, and it is
	easier and faster to have this special case
	than to shape a space.

	* pango/pango-context.c (pango_itemize): Put
	tabs into separate items. (Sort of lame hack,
	we do this to make line breaking with tab
	handling simpler)

	* examples/viewer.c (checkbutton_toggled): Notify
	all the layouts that the context has changed so
	the RTL base dir change actually takes effect.

2 files changed, 48 insertions, 37 deletions

diff --git a/examples/HELLO.utf8 b/examples/HELLO.utf8
index 7c624392..281c1be1 100644
--- a/examples/HELLO.utf8
+++ b/examples/HELLO.utf8
@@ -5,43 +5,42 @@ This is a list of ways to say hello in various languages. Its purpose is to illu
 (Converted into UTF-8)
 
 ---------------------------------------------------------
-Arabic  السلام عليكم
-Czech (česky)  Dobrý den
-Danish (Dansk)  Hej, Goddag
-English   Hello
-Esperanto  Saluton
-Estonian  Tere, Tervist
-FORTRAN   PROGRAM
-Finnish (Suomi)  Hei
-French (Français) Bonjour, Salut
-German (Deutsch Nord) Guten Tag
-German (Deutsch Süd) Grüß Gott
-Greek (Ελληνικά) Γειά σας
-Hebrew   שלום
-Hindi    नमस्ते, नमस्कार।
-Italiano  Ciao, Buon giorno
-Maltese   Ċaw, Saħħa
-Nederlands, Vlaams Hallo, Dag
-Norwegian (Norsk) Hei, God dag
-Polish   Dzień dobry, Hej
-Russian (Русский) Здравствуйте!
-Slovak   Dobrý deň
-Spanish (Español) ¡Hola!
-Swedish (Svenska) Hej, Goddag
-Thai (ภาษาไทย)  สวัสดีครับ, สวัสดีค่ะ
-Turkish (Türkçe) Merhaba
-Vietnamese (Tiếng Việt) Xin Chào
-Yiddish (ײַדישע) דאָס הײַזעלע 
+Arabic	السلام عليكم
+Czech	(česky)	Dobrý den
+Danish	(Dansk)	Hej, Goddag
+English	Hello
+Esperanto	Saluton
+Estonian	Tere, Tervist
+FORTRAN	PROGRAM
+Finnish	(Suomi)	Hei
+French	(Français)	Bonjour, Salut
+German	(Deutsch Nord)	Guten Tag
+German	(Deutsch Süd)	Grüß Gott
+Greek	(Ελληνικά)	Γειά σας
+Hebrew	שלום
+Hindi	नमस्ते, नमस्कार।
+Italiano	Ciao, Buon giorno
+Maltese	Ċaw, Saħħa
+Nederlands, Vlaams	Hallo, Dag
+Norwegian	(Norsk)	Hei, God dag
+Polish	Dzień dobry, Hej
+Russian	(Русский)	Здравствуйте!‎
+Slovak	Dobrý deň
+Spanish	(Español)	‎¡Hola!‎
+Swedish	(Svenska)	Hej, Goddag
+Thai	(ภาษาไทย)	สวัสดีครับ, สวัสดีค่ะ
+Turkish	(Türkçe)	Merhaba
+Vietnamese	(Tiếng Việt)	Xin Chào
+Yiddish	(ײַדישע)	דאָס הײַזעלע 
 
-Japanese (日本語)  こんにちは, ｺﾝﾆﾁﾊ
-Chinese (中文,普通话,汉语) 你好
-Cantonese (粵語,廣東話)  早晨, 你好
-Korean (한글)   안녕하세요, 안녕하십니까
-
-Difference among chinese characters in GB, JIS, KSC, BIG5:
- GB   -- 元气  开发
- JIS  -- 元気  開発
- KSC  -- 元氣  開發
- BIG5 -- 元氣  開發
+Japanese	(日本語)	こんにちは, ｺﾝﾆﾁﾊ
+Chinese	(中文,普通话,汉语)	你好
+Cantonese	(粵語,廣東話)	早晨, 你好
+Korean	(한글)	안녕하세요, 안녕하십니까
 
+Difference among chinese characters in GB, JIS, KSC, BIG5:‎
+ GB	--	元气	开发
+ JIS	--	元気	開発
+ KSC	--	元氣	開發
+ BIG5	--	元氣	開發
 
diff --git a/examples/viewer.c b/examples/viewer.c
index ccff0b77..61beceab 100644
--- a/examples/viewer.c
+++ b/examples/viewer.c
@@ -372,7 +372,19 @@ button_press (GtkWidget *layout, GdkEventButton *event)
 static void
 checkbutton_toggled (GtkWidget *widget, gpointer data)
 {
+  GSList *para_list;
+  
   pango_context_set_base_dir (context, GTK_TOGGLE_BUTTON (widget)->active ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR);
+
+  para_list = paragraphs;
+  while (para_list)
+    {
+      Paragraph *para = para_list->data;
+
+      pango_layout_context_changed (para->layout);
+      para_list = para_list->next;
+    }
+
   gtk_widget_queue_resize (layout);
 }