The prototype of text grid enhancement is available and the patch is under review now. Anybody who is interested in it could check out the patch from the cws cjksp1.
Today, I happen to find that there are quite many text grid issues open in Issuezilla. I will look at them one by one and try to fix them. :)
Some issues wrt. text grid in issuezilla:
i53425:more flexibility in the grid layout
i73011:Chinese layout incorrectly with text grid
i40768:CJK:Register-true not activated for frames when importing; Grid layout
i53464:Word table reformatted shorter on import due to Grid layout
i15251:"Snap to Grid" doesn't work correctly
i29543:WW8: paragraph with "snap to grid" invisible in table
i15424:baseline in grid
i55461:snap to grid doesn't work correctly inside frame
i54864:WW8: Different treatment of tables in page due to active CJK Grid
i72657:A single line on Word got converted to two lines on Writer due to Text Grid
i68204:option "Print grid" becomes inactive when reopening Page dialog
i35684:[Text Grid] Vertical alignment for different font sizes differ from MS Word
i49214:CJK: Line spacing interpretation is different between Word and Writer due to text grid
i24195:WW Import: Cell height is too big when opened in OOo 1.1.1a (due to CJK-Grid)
i56820:Ruby in vertical text in grid wrongly moves original text sideways
Please let me know if anybody has question about text grid layout. :)
2007年4月24日星期二
2007年3月22日星期四
User scenarios of text grid
The following user scenarios of text grid are under investigation.
1. When user creates a text document, the default paper mode of text grid is read from user preference settings. User can switch the default paper mode of text grid in text document options tab page. (Tools --> Options --> Text Document --> General) by clicking the check box "Use squared paper mode for text grid".
2. When import a Ms Word 97/2000 file (.doc), the default paper mode is treated as "standard paper mode".
3. When import a text document of the previous version of OO.org (.odt, .sxw), the default paper mode is treated as "squared paper mode"
4. When user is editing a text document with text grid.
if he switchs the paper mode from "squared" to "standard", the following behavior is used:
* line height = Max base text size + Max ruby text size
* lines per page = type area height / line height
* Max ruby text size = 0
if he switch the paper mode from "standard" to "squared", the following behavior is used:
* line height = type area height / lines per page
* Max base text size = line height * 2 / 3
* Max ruby text size = line height / 3
1. When user creates a text document, the default paper mode of text grid is read from user preference settings. User can switch the default paper mode of text grid in text document options tab page. (Tools --> Options --> Text Document --> General) by clicking the check box "Use squared paper mode for text grid".
2. When import a Ms Word 97/2000 file (.doc), the default paper mode is treated as "standard paper mode".
3. When import a text document of the previous version of OO.org (.odt, .sxw), the default paper mode is treated as "squared paper mode"
4. When user is editing a text document with text grid.
if he switchs the paper mode from "squared" to "standard", the following behavior is used:
* line height = Max base text size + Max ruby text size
* lines per page = type area height / line height
* Max ruby text size = 0
if he switch the paper mode from "standard" to "squared", the following behavior is used:
* line height = type area height / lines per page
* Max base text size = line height * 2 / 3
* Max ruby text size = line height / 3
2007年3月20日星期二
Two kinds of text grid layout
As mensioned before, there are two kinds of text grid layout which are used in CJK users. One is "squared page mode", the other is "standard (rectangle) page mode".
Per the text grid prososal approved by ODF TC, the style:layout-grid-standard-mode property is added to specified which kind of text grid is used for the document.
In order to ensure that either “sqaured mode” or “standard mode “is used for the whole document, the style:layout-grid-standard-mode property can only be set for the default style of the “page-layout”. When the style:layout-grid-standard-mode attribute appears inside a style:page-layout definition, then the attribute MUST be ignored.
Global setting entry for selection of which kind of text grid layout is used for the whole document. (Tools-->Options-->OpenOffice.Org Writer-->General)
When the "Use squared page mode for text grid" is checked, the original tab page of text grid is used.
When the "Use squared page mode for text grid" is unchecked, the following tab page of text grid is used.
Per the text grid prososal approved by ODF TC, the style:layout-grid-standard-mode property is added to specified which kind of text grid is used for the document.
In order to ensure that either “sqaured mode” or “standard mode “is used for the whole document, the style:layout-grid-standard-mode property can only be set for the default style of the “page-layout”. When the style:layout-grid-standard-mode attribute appears inside a style:page-layout definition, then the attribute MUST be ignored.
Global setting entry for selection of which kind of text grid layout is used for the whole document. (Tools-->Options-->OpenOffice.Org Writer-->General)
When the "Use squared page mode for text grid" is checked, the original tab page of text grid is used.
When the "Use squared page mode for text grid" is unchecked, the following tab page of text grid is used.
2007年3月13日星期二
Text grid in Ms Word 97 binary file format
In Ms Word 97 binary file format, there are three SPRMs to deal with grid. They are:
| Name | sprm | Property | size | Description |
| sprmSDxtCharSpace | 0x7030 | Sep.dxtCharSpace | long | Specifies the grid width |
| sprmSDyaLinePitch | 0x9031 | Sep.dyaLinePitch | long | Specifies the grid height |
| sprmSClm | 0x5032 | Sep.clm | long | Specifies the grid type |
sprmSClm has four values, which corresponds to four types of grid.
| Name | value | Grid type |
| sprmSClm | 0 | No grid |
| 1 | Specify line and character grid | |
| 2 | Specify line grid only | |
| 3 | Text snaps to character grid |
2007年3月12日星期一
Text grid enhancement in MS Office 2007
Today, I downloaded and installed a Chinese trial version of MS Office 2007. I was surprised that “Square page mode” is also supported in MS word 2007, which is not supported in previous version.
Below illustrates the menu entry for “square mode” setting. ( Maybe this function is disabled in none_CJK version in default).
Setting tab page:
Squared page (20 ×20):
If the “square page mode” is enabled, the page setting menu is disabled. “standard page mode” setting is not allowed, which avoids mixed page mode in a document.
2007年2月26日星期一
Text doesn't snap to grid
Contiue to investigate the layout behavior when the text doesn't snap to grid.
For East Asian text, not more than one Asian character is displayed within a signle cell. The space between two Asian characters is (grid width - font height)
For Western text, The space between two Western characters is (grid width - font height)/2.
The following diagram illustrates this algorithm in brief.
Certainly, it just specifies what happens if grid width is greater than font height.
For East Asian text, not more than one Asian character is displayed within a signle cell. The space between two Asian characters is (grid width - font height)
For Western text, The space between two Western characters is (grid width - font height)/2.
The following diagram illustrates this algorithm in brief.
Certainly, it just specifies what happens if grid width is greater than font height.
2007年2月16日星期五
Some knowledge about text grid
I just checked the Office OpenXML file format and try to find the difference between the two types of text grid.
It seems that the author of the specification doen't know the essential difference between these two types of text grid. :-)
Currently, I am investigating the Document Grid specified in CSS3 mensioned by Florian.
http://www.w3.org/TR/2003/CR-css3-text-20030514/#document-grid
- linesAndChars (Line and Character Grid): Specifies that the parent section shall have both the additional line pitch and character pitch added to each line and character within it (as specified on the docGrid element (§2.6.5)) in order to maintain a specific number of lines per page and characters per line. When this value is set, the input specified via the user interface may be allowed in exact number of line/character pitch units.
- snapToChars (Character Grid Only) : Specifies that the parent section shall have both the additional line pitch and character pitch added to each line and character within it (as specified on the docGrid element (§2.6.5)) in order to maintain a specific number of lines per page and characters per line.When this value is set, the input specified via the user interface may be restricted to the number of lines per page and characters per line, with the consumer or producer translating this information based on the current font data to get the resulting line and character pitch values
It seems that the author of the specification doen't know the essential difference between these two types of text grid. :-)
Currently, I am investigating the Document Grid specified in CSS3 mensioned by Florian.
http://www.w3.org/TR/2003/CR-css3-text-20030514/#document-grid
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