Thanks Sebastian,
That explains the mystery.
I'd like to add a static method for measuring test in Label:
/**
[EMAIL PROTECTED] text {String}
[EMAIL PROTECTED] font {String} optional font. If unspecified, take the
default one
from the document
[EMAIL PROTECTED] width and height
*/
measure: function(text, font) {...}
Is it a good place?
Sebastian Werner wrote:
>
> Adding the label to the document influences the selected font (keyword:
> inheritance). So it is quite logical that the size depends on that.
>
> Sebastian
>
>
>
> dperez schrieb:
>> Very interesting this test from the Firebug Console:
>>
>> Test 1:
>>
>> new qx.ui.basic.Label('david')._computePreferredInnerWidth()==38
>>
>> Test 2:
>>
>> var et = new qx.ui.basic.Label('david');
>> et.setLocation(200,200);
>> et.setZIndex(1000);
>> et.addToDocument()
>> et.setBackgroundColor('#ff0')
>> et._computePreferredInnerWidth()==26
>>
>>
>> Conclusion: the value reported depends on if the label has been added or
>> not.
>>
>> Is this normal?
>>
>> Relevant source code of Label.js:
>>
>> _computeObjectNeededDimensions : function()
>> {
>> // get node
>> var element = this.self(arguments)._getMeasureNode();
>> var style = element.style;
>>
>> // sync styles
>> var source = this._styleProperties;
>> style.fontFamily = source.fontFamily || "";
>> style.fontSize = source.fontSize || "";
>> style.fontWeight = source.fontWeight || "";
>> style.fontStyle = source.fontStyle || "";
>>
>> // apply html
>> if (this._isHtml)
>> {
>> element.innerHTML = this._content;
>> }
>> else
>> {
>> element.innerHTML = "";
>> qx.dom.Element.setTextContent(element, this._content);
>> }
>>
>> // store values
>> this._cachedPreferredInnerWidth = element.scrollWidth;
>> this._cachedPreferredInnerHeight = element.scrollHeight;
>> },
>>
>> _computePreferredInnerWidth : function()
>> {
>> this._computeObjectNeededDimensions();
>> return this._cachedPreferredInnerWidth;
>> },
>>
>>
>>
>> dperez wrote:
>>> Hi,
>>>
>>> In qooxdoo 0.6.6 I used to use this code for measuring the width of
>>> text:
>>>
>>> (new qx.ui.basic.Label('My text')).getPreferredBoxWidth()
>>>
>>> In qooxdoo 0.7, I receive very high values. For instance for a label
>>> whose measured real width is 170 pixels, a value of 240 is returned.
>>>
>>> What may be the cause of this inaccuracy?
>>> Is this the best method of measuring width of text?
>>>
>>> Thanx for any answer.
>>>
>>> Regards,
>>> David
>>>
>>
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> _______________________________________________
> qooxdoo-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
>
>
--
View this message in context:
http://www.nabble.com/Measuring-text-tf3963113.html#a11248824
Sent from the qooxdoo-devel mailing list archive at Nabble.com.
-------------------------------------------------------------------------
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the FREE version of DB2 express and take
control of your XML. No limits. Just data. Click to get it now.
http://sourceforge.net/powerbar/db2/
_______________________________________________
qooxdoo-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
