From cea96e02f596a749eaf96637dbec6976fe7f4d24 Mon Sep 17 00:00:00 2001
From: Christoph Sommer <mail@christoph-sommer.de>
Date: Fri, 26 May 2006 13:47:23 +0000
Subject: [PATCH] Worked around bug with wrappping utf-8 text / Made wrapping
 function a method of Font

SVN-Revision: 3593
---
 src/console.cpp      | 13 ++++++-------
 src/textscroller.cpp | 17 ++++++-----------
 src/video/font.cpp   | 28 ++++++++++++++++++++++++++++
 src/video/font.hpp   | 10 ++++++++++
 4 files changed, 50 insertions(+), 18 deletions(-)

diff --git a/src/console.cpp b/src/console.cpp
index ee6f843ab..6e3e49f8d 100644
--- a/src/console.cpp
+++ b/src/console.cpp
@@ -202,13 +202,12 @@ Console::autocomplete()
 void 
 Console::addLine(std::string s) 
 {
-  std::cerr << s << std::endl;
-  while (s.length() > 99) {
-    lines.push_front(s.substr(0, 99-3)+"...");
-    s = "..."+s.substr(99-3);
-  }
-  lines.push_front(s);
-  
+  std::string overflow;
+  do {
+    lines.push_front(Font::wrap_to_chars(s, 99, &overflow));
+    s = overflow;
+  } while (s.length() > 0);
+
   while (lines.size() >= 1000)
     lines.pop_back();
   
diff --git a/src/textscroller.cpp b/src/textscroller.cpp
index 0f0a5c154..ecf8fc765 100644
--- a/src/textscroller.cpp
+++ b/src/textscroller.cpp
@@ -287,17 +287,12 @@ InfoBoxLine::split(const std::string& text, int line_length)
       continue;
     } 
 
-    // if we are dealing with text, wrap long lines
-    while ((int)s.length() > line_length) {
-      int split_at = line_length;
-      while ((split_at > 0) && (s[split_at] != ' ')) split_at--;
-      if (split_at == 0) split_at = line_length;
-
-      lines.push_back(new InfoBoxLine(format_char, s.substr(0, split_at)));
-      if (s[split_at] == ' ') split_at++;
-      s = s.substr(split_at);
-    }
-    lines.push_back(new InfoBoxLine(format_char, s));
+    // append wrapped parts of line into list
+    std::string overflow;
+    do { 
+      lines.push_back(new InfoBoxLine(format_char, Font::wrap_to_chars(s, line_length, &overflow))); 
+      s = overflow;
+    } while (s.length() > 0);
 
   }
 
diff --git a/src/video/font.cpp b/src/video/font.cpp
index 5fe050a0a..42aa45583 100644
--- a/src/video/font.cpp
+++ b/src/video/font.cpp
@@ -95,6 +95,34 @@ Font::get_height() const
   return h;
 }
 
+std::string
+Font::wrap_to_width(const std::string& s, int max_width, std::string* overflow) const
+{
+  return wrap_to_chars(s, max_width / w, overflow);
+}
+
+std::string
+Font::wrap_to_chars(const std::string& s, int line_length, std::string* overflow)
+{
+  // if text is already smaller, return full text
+  if ((int)s.length() <= line_length) {
+    if (overflow) *overflow = "";
+    return s;
+  }
+
+  // if we can find a whitespace character to break at, return text up to this character
+  int i = line_length;
+  while ((i > 0) && (s[i] != ' ')) i--;
+  if (i > 0) {
+    if (overflow) *overflow = s.substr(i+1);
+    return s.substr(0, i);
+  }
+
+  // FIXME: wrap at line_length, taking care of multibyte characters
+  if (overflow) *overflow = "";
+  return s;
+}
+
 void
 Font::draw(const std::string& text, const Vector& pos_, FontAlignment alignment,
            DrawingEffect drawing_effect, float alpha) const
diff --git a/src/video/font.hpp b/src/video/font.hpp
index 9300fd46c..c39df1aaa 100644
--- a/src/video/font.hpp
+++ b/src/video/font.hpp
@@ -53,6 +53,16 @@ public:
   float get_text_height(const std::string& text) const;
   /// returns the height of the font.
   float get_height() const;
+ 
+  /**
+   * returns the given string, truncated (preferrably at whitespace) to be at most max_width pixels long
+   */
+  std::string wrap_to_width(const std::string& text, int max_width, std::string* overflow) const;
+
+  /**
+   * returns the given string, truncated (preferrably at whitespace) to be at most max_chars characters long
+   */
+  static std::string wrap_to_chars(const std::string& text, int max_chars, std::string* overflow);
   
   /** Draws the given text to the screen. Also needs the position.
    * Type of alignment, drawing effect and alpha are optional. */
-- 
2.11.0