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From ZuoJun Chen <zjchen...@gmail.com>
Subject Re: Question about text clipping mechanism in word processor
Date Wed, 20 Jun 2012 11:29:07 GMT
Hi, Oliver

Thanks for your response:). For the case a paragraph with below

paragraph spacing and line spacing of following paragraph is smaller than
font size,

MS Word will also clipped the text in the following paragraph in spite of
there is enough

below paragraph spacing from former paragraph. I posted a sample file in

attachments for this case.

I have noticed your comment in bugzilla, and will have a further think

> Hi,
>
>
> On 20.06.2012 11:40, Oliver-Rainer Wittmann wrote:
>
>> On 20.06.2012 10:47, ZuoJun Chen wrote:
>>
>>> Hi All,
>>>
>>> I'm trying to handle a bug on text clipped in document . See Bug
>>> 119476<https://issues.apache.**org/ooo/show_bug.cgi?id=119476<https://issues.apache.org/ooo/show_bug.cgi?id=119476>
>>> **> for more
>>> details.
>>>
>>> After investigation, I have some insights. When paragraph line spacing is
>>> smaller than font size,
>>>
>>> the text contained becomes too large for fit, then AOO will clipped text
>>> as Incomplete part. The code
>>>
>>> for text clipped mechanism can be located in method
>>> <SwTxtFormatter::**CalcRealHeight(..)> at
>>>
>>> sw\source\core\text\itrform2.**cxx line 1756.
>>>
>>>
>>> I thought that the preferable way to fix this would be to considering the
>>> spacing contains above paragraph
>>>
>>> spacing property and line spacing property as the conditions to determine
>>> whether clipping text. e.g.
>>>
>>> Clipped text if the sum of adding above paragraph spacing and line
>>> paragraph spacing is smaller than font size,
>>>
>>> otherwise do not clip text since above paragraph spacing and line spacing
>>> are enough to display the text.
>>>
>>>
>>  From my point of view this change makes sense.
>> If the text of the first line of a paragraph "founds" enough space in the
>> "above
>> paragraph spacing", the text should not be clipped.
>>
>> I had already looked at the patch and it looks ok.
>> I will have a deeper look regarding how to determine the value of "above
>> paragraph spacing". As far as I remember in some cases depending on
>> certain
>> compatibility option, the "above paragraph spacing" is not applied. E.g.,
>> if the
>> paragraph is the first on a page and compatibility option "Add paragraph
>> and
>> table spacing at tops of pages ..." is not checked, the "above paragraph
>> spacing" is not applied.
>> May be I find a solution to access the already calculated and applied
>> "above
>> paragraph spacing".
>>
>>
> I had a deeper review on the patch.
> Please see my comment in the issue [1].
>
> [1] https://issues.apache.org/ooo/**show_bug.cgi?id=119476#c5<https://issues.apache.org/ooo/show_bug.cgi?id=119476#c5>
>
>
> Best regards, Oliver.
>
>
>
>>> Noticed that there is a property named below paragraph spacing, but I'm
>>> not sure whether there is a need to consider this one,
>>>
>>> Do this property impact text clipped in paragraph?
>>>
>>>
>> May be - I am not sure.
>> Thus, a paragraph could have a "below paragraph spacing" and the first
>> text line
>> of the following paragraph could be to small. This would cause clipping,
>> but may
>> be the "below paragraph spacing" from the previous paragraph could be
>> used to
>> avoid the clipping.
>>  From my point of view avoid the clipping in this case would also make
>> sense.
>> May be my above mentioned further investigation regarding the available
>> space
>> above the first text line of a paragraph would solve this, too.
>>
>> Zuojun, do you know how MS Word will behave in this case?
>>
>>
>> Best regards, Oliver.
>>
>


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