x

Author: howcom

css3-multicol/Overview.html

@@ -29,13 +29,13 @@
 
    <h1>CSS Multi-column Layout Module</h1>
 
-   <h2 class="no-num no-toc" id=w3c-working>Editor's Draft 8 March 2011</h2>
+   <h2 class="no-num no-toc" id=w3c-working>Editor's Draft 9 March 2011</h2>
 
    <dl>
     <dt>This version:
 
     <dd>
-     <!--<a href="http://www.w3.org/TR/2011/CR-css3-multicol-20110308">http://www.w3.org/TR/2011/ED-css3-multicol-20110308</a>-->
+     <!--<a href="http://www.w3.org/TR/2011/CR-css3-multicol-20110309">http://www.w3.org/TR/2011/ED-css3-multicol-20110309</a>-->
      <a
      href="http://dev.w3.org/csswg/css3-multicol/">http://dev.w3.org/csswg/css3-multicol/</a>
 
@@ -960,7 +960,7 @@ <h3 id=pseudo-algorithm><span class=secno>3.4. </span>Pseudo-algorithm</h3>
 (04)  fi
 (05)  
 (06)  if (available-width = unknown) and (column-count != auto) and (column-width != auto) then
-(07)    N := column-count;
+(07)    N := column-count;  
 (08)    W := column-width;
 (09)    exit;
 (10)  fi
@@ -987,6 +987,48 @@ <h3 id=pseudo-algorithm><span class=secno>3.4. </span>Pseudo-algorithm</h3>
 (39)    N := min(column-count, floor((available-width + column-gap) / (column-width + column-gap)))
 (40)    W := ((available-width + column-gap) / N) - column-gap;
 (41)  fi
+</pre>
+
+  <p><span class=issue>Alternative pseudo-algorithm: </span>
+
+  <pre>
+
+(01)  if ((column-width = auto) and (column-count = auto)) or
+(02)     ((available-width = unknown) and (column-count = auto)) then
+(03)    exit; /* no columns */
+(04)  fi
+(05)  
+(06)  if (available-width = unknown) and (column-count != auto) and (column-width != auto) then
+(07)    N := column-count;  
+(08)    W := column-width;
+(09)    exit;
+(10)  fi
+
+(12)  if (available-width = unknown) then
+(13)    available-width := shrink-to-fit;
+(14)  fi
+
+/* the next block is used when column-count is set, and column-width is auto  */
+
+(16)  if (column-width = auto) then
+(18)    N := column-count;
+(19)    W := max(0, (available-width - ((N - 1) * column-gap))/N);
+        exit;
+      fi
+
+/* the next block is used when column-width is set, and column-count is auto */
+   
+(27)  if (column-count = auto) then
+(32)    N := min(1, floor((available-width + column-gap) / (column-width + column-gap)));
+(33)    W := ((available-width + column-gap) / N) - column-gap;
+        exit;
+      fi 
+
+/* the next block is used if both column-count and column-width are set */
+
+(39)  N := min(column-count, floor((available-width + column-gap) / (column-width + column-gap)))
+(40)  W := ((available-width + column-gap) / N) - column-gap;
+
 </pre>
 
   <p>In paged media, user agents may perform this calculation on a per-page