Percentages on region margins
I am trying to figure out on which base value to apply the margin="5%" on the (see fragment below): ... The margin in the page-master element is obviously based on the page-width as there is no further containing block. The percentage on the extend="5%" in the is also relative to the page-width as the spec says so: "refer to the corresponding width of the page-viewport-area". This leaves the margin on the region-body. My interpretation is that the containing block / ancestor area of the region-body is the page-reference-area. Its content rectangle would in this case have the width (5in - 2*(5in * 0.05)). If my interpretation is correct it would mean that in the above example the margins on the region-body would be smaller than the extend on the region-before (=> not nice). I am concerned because it seems to be somewhat inconsistent that the percentage on extent in a region-before is evaluated against a different base than the percentage on a margin in a region-body. I would appreciate if others could cross-check if my interpretation seems ok or not. Thanks Manuel
Re: Percentages on region margins
You probably missed the following: 7.10.1 "margin-top" says for percentages: > The percentage is calculated with respect to the width of the generated > box's containing block. This is true for 'margin-top' and 'margin-bottom', > except in the page context, where percentages refer to page box height. On 29.08.2005 13:18:59 Manuel Mall wrote: > I am trying to figure out on which base value to apply the margin="5%" > on the (see fragment below): > >page-width="5in" page-height="5in" margin="5%"> > > > ... > > The margin in the page-master element is obviously based on the > page-width as there is no further containing block. The percentage on > the extend="5%" in the is also relative to the > page-width as the spec says so: "refer to the corresponding width of > the page-viewport-area". This leaves the margin on the region-body. My > interpretation is that the containing block / ancestor area of the > region-body is the page-reference-area. Its content rectangle would in > this case have the width (5in - 2*(5in * 0.05)). If my interpretation > is correct it would mean that in the above example the margins on the > region-body would be smaller than the extend on the region-before (=> > not nice). I am concerned because it seems to be somewhat inconsistent > that the percentage on extent in a region-before is evaluated against a > different base than the percentage on a margin in a region-body. > > I would appreciate if others could cross-check if my interpretation > seems ok or not. > > Thanks > > Manuel Jeremias Maerki
Re: Percentages on region margins
On Mon, 29 Aug 2005 08:20 pm, Jeremias Maerki wrote: > You probably missed the following: > > 7.10.1 "margin-top" says for percentages: > > The percentage is calculated with respect to the width of the > > generated box's containing block. This is true for 'margin-top' and > > 'margin-bottom', except in the page context, where percentages > > refer to page box height. > Thanks for pointing this out - don't you love this spec -:). However, that's for a margin specified on a page-master. My uncertainty is with a margin specified on a region-body unless you interpret the term "page context" as meaning page-master and its subordinate elements in which case margins on regions would be resolved relative to the page-width/height. > On 29.08.2005 13:18:59 Manuel Mall wrote: > > I am trying to figure out on which base value to apply the > > margin="5%" on the (see fragment below): > > > > > page-width="5in" page-height="5in" margin="5%"> > > > > > > ... > > > > The margin in the page-master element is obviously based on the > > page-width as there is no further containing block. The percentage > > on the extend="5%" in the is also relative to > > the page-width as the spec says so: "refer to the corresponding > > width of the page-viewport-area". This leaves the margin on the > > region-body. My interpretation is that the containing block / > > ancestor area of the region-body is the page-reference-area. Its > > content rectangle would in this case have the width (5in - 2*(5in * > > 0.05)). If my interpretation is correct it would mean that in the > > above example the margins on the region-body would be smaller than > > the extend on the region-before (=> not nice). I am concerned > > because it seems to be somewhat inconsistent that the percentage on > > extent in a region-before is evaluated against a different base > > than the percentage on a margin in a region-body. > > > > I would appreciate if others could cross-check if my interpretation > > seems ok or not. > > > > Thanks > > > > Manuel > > Jeremias Maerki Manuel
Re: Percentages on region margins
On 29.08.2005 17:18:18 Manuel Mall wrote: > On Mon, 29 Aug 2005 08:20 pm, Jeremias Maerki wrote: > > You probably missed the following: > > > > 7.10.1 "margin-top" says for percentages: > > > The percentage is calculated with respect to the width of the > > > generated box's containing block. This is true for 'margin-top' and > > > 'margin-bottom', except in the page context, where percentages > > > refer to page box height. > > > > Thanks for pointing this out - don't you love this spec -:). However, > that's for a margin specified on a page-master. My uncertainty is with > a margin specified on a region-body unless you interpret the term "page > context" as meaning page-master and its subordinate elements in which > case margins on regions would be resolved relative to the > page-width/height. I agree that this may not be 100% clear but I believe this applies to the simple-page-master's immediate children, too. I mean we're outside of the normal block-level stuff and inside the page declaration. It would really be weird to base these values on anything else than the page extents. > > On 29.08.2005 13:18:59 Manuel Mall wrote: > > > I am trying to figure out on which base value to apply the > > > margin="5%" on the (see fragment below): > > > > > > > > page-width="5in" page-height="5in" margin="5%"> > > > > > > > > > ... > > > > > > The margin in the page-master element is obviously based on the > > > page-width as there is no further containing block. The percentage > > > on the extend="5%" in the is also relative to > > > the page-width as the spec says so: "refer to the corresponding > > > width of the page-viewport-area". This leaves the margin on the > > > region-body. My interpretation is that the containing block / > > > ancestor area of the region-body is the page-reference-area. Its > > > content rectangle would in this case have the width (5in - 2*(5in * > > > 0.05)). If my interpretation is correct it would mean that in the > > > above example the margins on the region-body would be smaller than > > > the extend on the region-before (=> not nice). I am concerned > > > because it seems to be somewhat inconsistent that the percentage on > > > extent in a region-before is evaluated against a different base > > > than the percentage on a margin in a region-body. > > > > > > I would appreciate if others could cross-check if my interpretation > > > seems ok or not. > > > > > > Thanks > > > > > > Manuel > > > > Jeremias Maerki > > Manuel Jeremias Maerki
Re: Percentages on region margins
On Mon, 29 Aug 2005 11:28 pm, Jeremias Maerki wrote: > On 29.08.2005 17:18:18 Manuel Mall wrote: > > On Mon, 29 Aug 2005 08:20 pm, Jeremias Maerki wrote: > > > You probably missed the following: > > > > > > 7.10.1 "margin-top" says for percentages: > > > > The percentage is calculated with respect to the width of the > > > > generated box's containing block. This is true for 'margin-top' > > > > and 'margin-bottom', except in the page context, where > > > > percentages refer to page box height. > > > > Thanks for pointing this out - don't you love this spec -:). > > However, that's for a margin specified on a page-master. My > > uncertainty is with a margin specified on a region-body unless you > > interpret the term "page context" as meaning page-master and its > > subordinate elements in which case margins on regions would be > > resolved relative to the > > page-width/height. > > I agree that this may not be 100% clear but I believe this applies to > the simple-page-master's immediate children, too. I mean we're > outside of the normal block-level stuff and inside the page > declaration. It would really be weird to base these values on > anything else than the page extents. > Yes I agree (with the weird bit), that's why I ask the question. So I will resolve relative to the page width/height. > > > On 29.08.2005 13:18:59 Manuel Mall wrote: > > > > I am trying to figure out on which base value to apply the > > > > margin="5%" on the (see fragment below): > > > > > > > > > > > page-width="5in" page-height="5in" margin="5%"> > > > > > > > > > > > > ... > > > > > > > > The margin in the page-master element is obviously based on the > > > > page-width as there is no further containing block. The > > > > percentage on the extend="5%" in the is also > > > > relative to the page-width as the spec says so: "refer to the > > > > corresponding width of the page-viewport-area". This leaves the > > > > margin on the region-body. My interpretation is that the > > > > containing block / ancestor area of the region-body is the > > > > page-reference-area. Its content rectangle would in this case > > > > have the width (5in - 2*(5in * 0.05)). If my interpretation is > > > > correct it would mean that in the above example the margins on > > > > the region-body would be smaller than the extend on the > > > > region-before (=> not nice). I am concerned because it seems to > > > > be somewhat inconsistent that the percentage on extent in a > > > > region-before is evaluated against a different base than the > > > > percentage on a margin in a region-body. > > > > > > > > I would appreciate if others could cross-check if my > > > > interpretation seems ok or not. > > > > > > > > Thanks > > > > > > > > Manuel > > > > > > Jeremias Maerki > > > > Manuel > > Jeremias Maerki Manuel
Re: Percentages on region margins
On Mon, 29 Aug 2005 11:31 pm, Manuel Mall wrote: > On Mon, 29 Aug 2005 11:28 pm, Jeremias Maerki wrote: > > On 29.08.2005 17:18:18 Manuel Mall wrote: > > > On Mon, 29 Aug 2005 08:20 pm, Jeremias Maerki wrote: > > > > You probably missed the following: > > > > > > > > 7.10.1 "margin-top" says for percentages: > > > > > The percentage is calculated with respect to the width of the > > > > > generated box's containing block. This is true for > > > > > 'margin-top' and 'margin-bottom', except in the page context, > > > > > where percentages refer to page box height. > > > > > > Thanks for pointing this out - don't you love this spec -:). > > > However, that's for a margin specified on a page-master. My > > > uncertainty is with a margin specified on a region-body unless > > > you interpret the term "page context" as meaning page-master and > > > its subordinate elements in which case margins on regions would > > > be resolved relative to the > > > page-width/height. > > > > I agree that this may not be 100% clear but I believe this applies > > to the simple-page-master's immediate children, too. I mean we're > > outside of the normal block-level stuff and inside the page > > declaration. It would really be weird to base these values on > > anything else than the page extents. > > Yes I agree (with the weird bit), that's why I ask the question. So I > will resolve relative to the page width/height. > Further to this - what is the expectation if we change the reference orientation by 90 degrees (whichever way)? Now margin-top and bottom are along the sides and margin-before and after are across (Look at the picture in section 6.4.12 under "Constraints applicable to regions" of the spec if you don't quite understand what I am talking about. ). Shall we still resolve a percentage on a margin-top/bottom against the page-height? Looks awkward to me but couldn't find (that doesn't mean there is none) an answer in the spec. > > > > On 29.08.2005 13:18:59 Manuel Mall wrote: > > > > > I am trying to figure out on which base value to apply the > > > > > margin="5%" on the (see fragment below): > > > > > > > > > > > > > > page-width="5in" page-height="5in" margin="5%"> > > > > > > > > > > > > > > > ... > > > > > > > > > > The margin in the page-master element is obviously based on > > > > > the page-width as there is no further containing block. The > > > > > percentage on the extend="5%" in the is > > > > > also relative to the page-width as the spec says so: "refer > > > > > to the corresponding width of the page-viewport-area". This > > > > > leaves the margin on the region-body. My interpretation is > > > > > that the containing block / ancestor area of the region-body > > > > > is the page-reference-area. Its content rectangle would in > > > > > this case have the width (5in - 2*(5in * 0.05)). If my > > > > > interpretation is correct it would mean that in the above > > > > > example the margins on the region-body would be smaller than > > > > > the extend on the region-before (=> not nice). I am concerned > > > > > because it seems to be somewhat inconsistent that the > > > > > percentage on extent in a region-before is evaluated against > > > > > a different base than the percentage on a margin in a > > > > > region-body. > > > > > > > > > > I would appreciate if others could cross-check if my > > > > > interpretation seems ok or not. > > > > > > > > > > Thanks > > > > > > > > > > Manuel > > > > > > > > Jeremias Maerki > > > > > > Manuel > > > > Jeremias Maerki > > Manuel Manuel
Re: Percentages on region margins
(Just to be clear, you mean reference-orientation on simple-page-master, right? Not region-body.) Good question. I can't find any special reference to this case in the spec. I guess we need to go with the end-user expectation which I imagine would be that you compensate for the the rotation. But maybe I miss something. On 31.08.2005 03:35:43 Manuel Mall wrote: > Further to this - what is the expectation if we change the reference > orientation by 90 degrees (whichever way)? Now margin-top and bottom > are along the sides and margin-before and after are across (Look at the > picture in section 6.4.12 under "Constraints applicable to regions" of > the spec if you don't quite understand what I am talking about. > ). Shall we still resolve a percentage on a margin-top/bottom against > the page-height? Looks awkward to me but couldn't find (that doesn't > mean there is none) an answer in the spec. Jeremias Maerki
