Re: line-height interpretation
Adam Augusta wrote: I think I've figured out the formula FOP uses. I'm quite sure it's wrong; the height of the block should simply be line-height, if specified in length, or as a multiplier of the font-size, if specified dimensionless. It seems to be: Diff(Ascender,Descender)*font-size/1000 + (line-height - font-size) FOP adds a half-leading display space above and below the line, the half-leading is computed as (lineHeight - fontState.getFontSize()) / 2 There are numerous inconsistencies in the application though. J.Pietschmann - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: line-height interpretation
Adam, On Jul 6, 2004, at 2:18 PM, Adam Augusta wrote: The 'line-height' property is supposed to specify the height of a text block as a multiple of the font size. The spec* says that the user agent may pick a reasonable multiplier, recommended between 1 and 1.2. I said Forget that! I want to my spacing to be deterministic, thank you very much. What is this, CSS? So I specified my own spacing. *http://www.w3.org/TR/xsl/slice7.html#line-height No matter what line height I pick, the engine seems to add 5pt plus a little more. So if I pick 17pt, I get 22pt+, and if I pick 7pt, I get 12pt+. The compliance page says that the property is fully implemented. So why am I getting this 5pt+ discrepancy? (Yes, line-height=1 gives the same result for me as line-height=14pt with a 14pt font. That is, 19pt+. Setting force/minimum/maximum etc has no effect.) As you can see, I set the border, padding, and spacing to 0. snip what=xsl-fo_content/ -Adam I don't know if it makes a difference, but it may help to know what the output target is (PDF? AWT? PS?) as well as the JVM/JDK. I've found kerning differences in output between AWT (-awt -print) vs. PDF, that is affected (exacerbated?) by the version of the Java Virtual Machine. I realize you are writing about line-height, but perhaps (hopefully?) this may contribute to a workaround. In either case, perhaps we need to update the /compliance.html... Web Maestro Clay - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: line-height interpretation
On Tue, 6 Jul 2004, Clay Leeds wrote: Adam, On Jul 6, 2004, at 2:18 PM, Adam Augusta wrote: The 'line-height' property is supposed to specify the height of a text block as a multiple of the font size. The spec* says that the user agent may pick a reasonable multiplier, recommended between 1 and 1.2. I said Forget that! I want to my spacing to be deterministic, thank you very much. What is this, CSS? So I specified my own spacing. snip / No matter what line height I pick, the engine seems to add 5pt plus a little more. So if I pick 17pt, I get 22pt+, and if I pick 7pt, I get 12pt+. The compliance page says that the property is fully implemented. So why am I getting this 5pt+ discrepancy? snip / I don't know if it makes a difference, but it may help to know what the output target is (PDF? AWT? PS?) as well as the JVM/JDK. I've found kerning differences in output between AWT (-awt -print) vs. PDF, that is affected (exacerbated?) by the version of the Java Virtual Machine. I realize you are writing about line-height, but perhaps (hopefully?) this may contribute to a workaround. In either case, perhaps we need to update the /compliance.html... Web Maestro Clay PDF output java version 1.4.2_05 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_05-b04) The only workaround I can think of is to make each line a block container with an absolute position. *grimace* -Adam PS: Generating an SVG representation of a block container, putting a rotate transform on the SVG group, and then reembedding that SVG into a larger XSL:FO document seems to work well! I can even rotate to non-90 degree orientations, but then of course I have to do some trig with widths and reference points. (Of course, with the problem above, I'm going to have to come up with new reference points for every line. *shudder*) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
