From ebbdbef47e0933e2a560fb99791e9980b540e102 Mon Sep 17 00:00:00 2001
From: Duan Yao <duanyao@ustc.edu>
Date: Mon, 16 Mar 2015 02:44:38 +0800
Subject: [PATCH] Workaround bugs of blink/webkit: (negative) word-spacing,
 leading spaces, inline/inline-block elements.

---
 share/base.css.in  | 14 ++++++++++----
 src/StateManager.h |  8 ++++----
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/share/base.css.in b/share/base.css.in
index a15a23f..38c271a 100644
--- a/share/base.css.in
+++ b/share/base.css.in
@@ -161,15 +161,21 @@
   /* Workaround for https://bugs.webkit.org/show_bug.cgi?id=35443 */
   content: '';
 }
+.@CSS_LINE_CN@:before {
+  /* Workaround Blink(up to 41)/Webkit bug of word-spacing with leading spaces (chromium #404444 and pdf2htmlEX #412) */
+  content: '';
+  display: inline-block;
+}
 .@CSS_LINE_CN@ span { /* text blocks within a line */
+  /* Blink(up to 41)/Webkit have bug with negative word-spacing and inline-block (pdf2htmlEX #416), so keep normal span inline. */
   position:relative;
-  /* _<id> for spaces may need display:inline, which will override this */ 
-  display:inline-block;
   unicode-bidi:bidi-override; /* For rtl languages, e.g. Hebrew, we don't want the default Unicode behaviour */
 }
 .@CSS_WHITESPACE_CN@ { /* text shift */
-  color:transparent;
-  z-index:-1;
+  /* Blink(up to 41)/Webkit have bug with inline element, continuous spaces and word-spacing. Workaround by inline-block. */
+  display: inline-block;
+  color: transparent;
+  z-index: -1;
 }
 /* selection background should not be opaque, for fallback mode */
 ::selection{
diff --git a/src/StateManager.h b/src/StateManager.h
index a02a673..0a19df0 100644
--- a/src/StateManager.h
+++ b/src/StateManager.h
@@ -245,15 +245,15 @@ public:
     static const char * get_css_class_name (void) { return CSS::WHITESPACE_CN; }
     double default_value(void) { return 0; }
     void dump_value(std::ostream & out, double value) { 
-        out << ((value > 0) ? "display:inline-block;width:" 
-                            : "display:inline;margin-left:")
+        out << ((value > 0) ? "width:"
+                            : "margin-left:")
             << round(value) << "px;";
     }
     void dump_print_value(std::ostream & out, double value, double scale) 
     {
         value *= scale;
-        out << ((value > 0) ? "display:inline-block;width:" 
-                            : "display:inline;margin-left:")
+        out << ((value > 0) ? "width:"
+                            : "margin-left:")
             << round(value) << "pt;";
     }
 };