xfq
diff --git a/‎css-page-floats/Overview.bs‎
Lines changed: 117 additions & 75 deletions b/‎css-page-floats/Overview.bs‎
Lines changed: 117 additions & 75 deletions
@@ -56,6 +56,12 @@ Terminology</h2>
     <dt><dfn>Float</dfn>
     <dd>
       An element which has float set to something else than none.
+    <dt><dfn>Inline float</dfn>
+    <dd>
+      A float which has float set to inline.
+    <dt><dfn>Page float</dfn>
+    <dd>
+      A float which has float set to something else than inline or none.
     <dt><dfn>Float block formatting context</dfn>
     <dd>
       The block formatting context which is generated by a float and which contains
@@ -67,7 +73,7 @@ Terminology</h2>
       margins, borders or padding.
     <dt><dfn>Float containing block formatting context</dfn>
     <dd>
-      The block formatting context inside of which the float is embedded.
+      The block formatting context inside of which an float is embedded.
     <dt><dfn>Initial float reference</dfn>
       <dd>
         The entity to which the float is aligned initially, before float
@@ -114,6 +120,8 @@ Floating to the inline-start/inline-end and block-start/block-end</h2>
       The <a>float containing block formatting context</a> is the same as that of the
       <a>float anchor</a>.
 
+      The float is an <a>inline float</a>.
+
     <dt><dfn>column</dfn>
     <dd>
       The <a>float reference</a> is the column in a multi column environment in
@@ -123,6 +131,9 @@ Floating to the inline-start/inline-end and block-start/block-end</h2>
 
       The <a>float containing block formatting context</a> is a new block formatting
       context with the same dimensions and placement as the <a>float reference</a>.
+
+      The float is a <a>page float</a>.
+
     <dt><dfn>region</dfn>
     <dd>
       The <a>float reference</a> is the region in a region-chain within which the
@@ -133,14 +144,18 @@ Floating to the inline-start/inline-end and block-start/block-end</h2>
       The <a>float containing block formatting context</a> is a new block formatting
       context with the same dimensions and placement as the <a>float reference</a>.
 
+      The float is a <a>page float</a>.
+
     <dt><dfn>page</dfn>
     <dd>
       The <a>float reference</a> of the float is the page within which the <a>float
       anchor</a> is placed. If the <a>float anchor</a> is not inside a page, the
       <a>float reference</a> is the line box of the <a>float anchor</a>.
 
       The <a>float containing block formatting context</a> is a new block formatting
-      context with the same dimensions and placement as the <a>float reference</a>
+      context with the same dimensions and placement as the <a>float reference</a>.
+
+      The float is a <a>page float</a>.
   </dl>
 
   <div class="issue">
@@ -150,8 +165,8 @@ Floating to the inline-start/inline-end and block-start/block-end</h2>
   </div>
 
   <div class="issue">
-    It is not possible to directly specify which element to use as the reference
-    element. This may be of interest to have.
+    It is not possible to specify a block element which element to use as the
+    reference element. This has been requested.
 
     Maybe something like:
 
@@ -239,17 +254,17 @@ And some more text&lt;/p>
     If the <a>float reference</a> is a line box, behaves like inline-start or
     inline-end, whichever corresponds to line-left for the float reference.
 
-    Otherwise, behaves like block-end, inline-start or inline-end depending on the float
-    containing block’s 'direction' and 'writing-mode'.
+    Otherwise, behaves like block-end, inline-start or inline-end depending on
+    the float containing block’s 'direction' and 'writing-mode'.
 
   <dt><dfn>right</dfn>
 
   <dd>
     If the <a>float reference</a> is a line box, behaves like inline-start or
     inline-end, whichever corresponds to line-right for the float reference.
 
-    Otherwise, behaves like block-start, inline-start or inline-end depending on the float
-    containing block’s 'direction' and 'writing-mode'.
+    Otherwise, behaves like block-start, inline-start or inline-end depending on
+    the float containing block’s 'direction' and 'writing-mode'.
 
   <dt><dfn>top</dfn>
 
@@ -265,44 +280,41 @@ And some more text&lt;/p>
 
   <dt><dfn>snap-block(&lt;length> [, start | end | near ]?)</dfn>
   <dd>
-      Makes the element float to the start or the end of the block if it
-      naturally appears within a certain distance from either one. The length
-      value(s) specifies the maximum distance from the start/end that an element
-      must be within in order to be floated; one length value specifies the
-      distance from both the start and the end, two length values specify the
-      distance from the start and end, respectively.
+      Has no effect if the element is an <a>inline float</a>.
+
+      If the element is a <a>page float</a>, it makes the element float to the
+      start or the end of the block if it naturally appears within a certain
+      distance from either one. The length value(s) specifies the maximum
+      distance from the start/end that an element must be within in order to be
+      floated; one length value specifies the distance from both the start and
+      the end, two length values specify the distance from the start and end,
+      respectively.
 
       The optional keyword value specifies where the element is floated: start,
       end, or the nearest of the two. The initial value is 'near'. If 'near'
       is in effect and the element is within the specified distance both from
       the start and the end, end wins.
 
-      An element is considered to be a float if it ha
8027
s a snap-block() value,
-      even if the element does not appear within the specified distance. This
-      way, it can be determined whether an element is float or not without
-      laying out the document.
-
   <dt><dfn>snap-block</dfn>
   <dd>same as <code>snap-block(2em, near)</code>
 
   <dt><dfn>snap-inline(&lt;length> [, left | right | near ]?)</dfn>
   <dd>
-      Makes the element float to the line start or line end if it naturally
-      appears within a certain distance from the start or end of the line. The
-      length value(s) specifies the maximum distance from the start/end that an
-      element must be within in order to be floated; one length value specifies
-      the distance from both the start and the end, two length values specify the
-      distance from the start and end, respectively.
+      Has no effect if the element is an <a>inline float</a>.
+
+      If the element is a <a>page float</a>, it makes the element float to the
+      line start or line end if it naturally appears within a certain distance
+      from the start or end of the line. The length value(s) specifies the
+      maximum distance from the start/end that an element must be within in
+      order to be floated; one length value specifies the distance from both the
+      start and the end, two length values specify the distance from the start
+      and end, respectively.
 
       The optional keyword value specifies where the element is floated: line
       start, line end, or the nearest of the two. The initial value is 'near'.
       If 'near' is in effect and the element is within the specified distance
       both from the start and the end, end wins.
 
-      An element is considered to be a float if it has a snap-inline() value,
-      even if the element does not appear within the specified distance. This
-      way, it can be determined whether an element is float or not without laying
-      out the document.
 
   <dt><dfn>snap-inline</dfn>
   <dd>same as <code>snap-inline(2em, near)</code>
@@ -441,37 +453,36 @@ The 'clear' property</h2>
       with an inline-start-float-reference that resulted from elements earlier
       in the source document.
 
-      If applied to a page float, the <a>float reference</a> in which the page float
-      is placed will be seen as full when determining whether it can host
-      subsequent page floats that float in the inline-start direction.
+      If applied to a <a>page float</a>, the <a>float reference</a> in which the
+      page float is placed will be seen as full when determining whether it can
+      host subsequent page floats that float in the inline-start direction.
 
     <dt><dfn>inline-end</dfn>
     <dd>
-      If applied to a block-level element or a float with a 'float-reference' set
-      to inline, requires that the block-start outer edge of the box comes after
-      the block-end outer edge of any inline-end-floats with an
-      inline-end-float-reference that resulted from elements earlier in the
-      source document.
+      If applied to a block-level element or an <a>inline float</a>, requires
+      that the block-start outer edge of the box comes after the block-end outer
+      edge of any inline-end-floats with an inline-end-float-reference that
+      resulted from elements earlier in the source document.
 
-      If applied to a page float, the <a>float reference</a> in which the page float
-      is placed will be seen as full when determining whether it can host
-      subsequent page floats that float in the inline-end direction.
+      If applied to a <a>page float</a>, the <a>float reference</a> in which the
+      page float is placed will be seen as full when determining whether it can
+      host subsequent page floats that float in the inline-end direction.
 
 
     <dt><dfn>block-start</dfn>
     <dd>
-      If applied to a block-level element or a float with a 'float-reference' set
-      to inline, behave like inline-start.
+      If applied to a block-level element or an <a>inline float</a>, behaves like
+      inline-start.
 
-      If applied to a page float, the <a>float reference</a> in which the page float
-      is placed will be seen as full when determining whether it can host
+      If applied to a page float, the <a>float reference</a> in which the page
+      float is placed will be seen as full when determining whether it can host
       subsequent page floats that float in the block-start direction.
 
     <dt><dfn>block-end</dfn>
 
     <dd>
-      If applied to a block-level element or a float with a 'float-reference' set
-      to inline, behave like inline-end.
+      If applied to a block-level element or an <a>inline float</a>, behaves
+      like inline-end.
 
       If applied to a page float, the <a>float reference</a> in which the page float
       is placed will be seen as full when determining whether it can host
@@ -501,6 +512,26 @@ The 'clear' property</h2>
       Behave like block-end or inline-end depending on the float
       containing block’s 'direction' and 'writing-mode'.
 
+    <dt><dfn>both-inline</dfn>
+
+    <dd>
+      Behave like inline-start and inline-end.
+
+    <dt><dfn>both-block</dfn>
+
+    <dd>
+      Behave like block-start and block-end.
+
+    <dt><dfn>both</dfn>
+
+    <dd>
+      Behave like both-inline.
+
+    <dt><dfn>all</dfn>
+
+    <dd>
+      Behave like both-block and both-inline.
+
   </dl>
 
 
@@ -586,14 +617,17 @@ The 'clear' property</h2>
 
   </div>
 
-<h2 id="deferring_floats">Deferring floats</h2>
+<h2 id="deferring_floats">Deferring page floats</h2>
+
+  Users can influence the placement of a <a>page float</a> by deferring them to
+  another <a>fragmentation container</a> than where the <a>float anchor</a> is
+  placed.
 
-  Users can influence the placement of a page float by deferring them to another
-  <a>fragmentation container</a> than where the <a>float anchor</a> is placed.
+  A float that is an <a>inline float</a> cannot be deferred.
 
-  Float deferring assigns an <a>initial float reference</a>, yet float stacking can
-  lead page floats being moved to a subsequent <a>fragmentation container</a> if
-  their <a>initial float reference</a> lacks the space to host them.
+  Float deferring assigns an <a>initial float reference</a>, yet float stacking
+  can lead page floats being moved to a subsequent <a>fragmentation container</a>
+  if their <a>initial float reference</a> lacks the space to host them.
 
   The 'float-defer' property is introduced to control deferring floats:
 
@@ -612,9 +646,13 @@ The 'clear' property</h2>
     </pre>
 
 
-    This property specifies whether the <a>initial float reference</a> of a page
-    float is the <a>fragmentation container</a> in which the <a>float anchor</a> is placed
-    after previous page floats have been placed, or in another one. Values are:
+    This property specifies whether the <a>initial float reference</a> of a <a>page
+    float</a> is the <a>fragmentation container</a> in which the <a>float anchor</a>
+    is placed after previous page floats have been placed, or in another one.
+
+    This property is ignored if the element is an <a>inline float</a>.
+
+    Values are:
 
     <dl>
       <dt>none
@@ -723,11 +761,11 @@ The 'clear' property</h2>
 <img alt="sample rendering" src="images/6.png">
     </div>
 
-<h2 id="wrapping-around-page-floats">Wrapping around floats</h2>
+<h2 id="wrapping-around-page-floats">Wrapping around page floats</h2>
 
-  Floats have their 'wrap-flow' property set to 'both' initially and are treated
-  like exclusions. This specification does not make any further specification about
-  wrapping contents around floats.
+  Page floats have their 'wrap-flow' property set to 'both' initially and are
+  treated like exclusions. This specification does not make any further
+  specification about wrapping contents around page floats.
 
   <div class="issue">
     Should the 'wrap-flow' really be set to both, or should the flow be restricted
@@ -748,11 +786,13 @@ The 'clear' property</h2>
     Animatable: no
   </pre>
 
-  This property pushes a float in direction opposite of the where it has been
+  This property pushes a <a>page float</a> in direction opposite of the where it has been
   floated with 'float'.
 
-  This property can only influence a page float along an axis along which it has
-  been floated.
+  If the element is an <a>inline float</a>, this property is ignored.
+
+  This property can only influence a <a>page float</a> along an axis along which
+  it has been floated.
 
   <dl>
     <dt>&lt;percentage></dt>
@@ -766,8 +806,6 @@ The 'clear' property</h2>
     </dd>
   </dl>
 
-
-
   <div class="example">
 
 <pre>
@@ -796,11 +834,8 @@ img {
 
     <img alt="sample rendering" src="images/14.png">
 
-
-
   </div>
 
-
   <div class="example">
     Pull quotes are often centered in a column. In this example, the pull quote is
     floated to the right, and then pushed back into the center.
@@ -882,7 +917,7 @@ img {
 Float references can grow up to the their `max-height` and `max-width` or their
 `available size`, whichever is the lowest, in order to accommodate page floats.
 
-<h3 id="float-stacking">Rules for Float stacking</h3>
+<h3 id="float-stacking">Rules for page float stacking</h3>
 
 Page floats are stacked within a given <a>float reference</a> in the order of their
 placement and in the direction of the inline- and flow-directions of the
@@ -891,19 +926,26 @@ floats with the same <a>float reference</a> and by keeping a distance N between
 the page float's margin edge and the padding edge of the <a>float reference</a>
 as well as between the page float's margin edge and the margin edge of the last
 previously placed page float with the same <a>float reference</a> and the same
-'float' value, where N is the 'float-offset' value of the page float. For the
-placement it is assumed that the page floats in the block directions fill the
-entire line size of the <a>float reference</a> and page floats in the inline
-direction fill the entire block size of the <a>float reference</a>.
+'float' value, where N is the 'float-offset' value of the page float.
+
+For the purpose of calculating whether enough space is available for a page floats
+within the <a>float reference</a>, it is assumed that the page floats in the block
+in the inline direction fill the entire block size of the <a>float reference</a>.
+
+For the purpose of placement, page floats in the block-start direction are also
+placed at the inline-start edge of the float reference and vice versa, and page
+floats in the block-end direction are placed at the inline-end edge of the float
+reference and vice versa.
 
 If the page float has a defined 'clear'-value, then the <a>float reference</a> in
 which the page float is placed is closed for all subsequent page floats that
 floating in the direction specified by the 'clear'-value.
 
 <p class="issue">
-  This definition may be a bit too simple, as it does not allow for page floats
-  that go in the line direction and block direction within the same
-  <a>fragmentation container</a>.
+  We can effectively currently float to two corners: inline-start/block-start and
+  inline-end/block-end. We should augment this with the option to have a secondary
+  float direction to allow basic 2D floating.
 
 
 <h2 id="relation_to_absolutely_positioned_exclusions">