This would replace ComboBoxEx._getTextWidth()
dperez wrote:
>
> 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
>>>>
>>>
>>
>>
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>>
>
>
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