[TYPO3-dev] How to use Image-Object for higher resolutions ?

[Franz Koch]

Hi,
> I intended something like this:
> 
> function cImage($file,$conf) {
>     $info = $this->getImgResource($file,$conf['file.']);
>     $GLOBALS['TSFE']->lastImageInfo=$info;
>     if (is_array($info))    {
>         ...
> 
> +       $myImgFile = $conf['file.']['noRescale'] ? $info['origFile'] : 
> $info[3];
> +       $myWidth = intval($conf['file.']['resolution']) ? $info[0] / 
> intval($conf['file.']['resolution']) : $info[0];
> +       $myHeight = intval($conf['file.']['resolution']) ? $info[1] / 
> intval($conf['file.']['resolution']) : $info[1];
> +
> -       $theValue = '<img 
> src="'.htmlspecialchars($GLOBALS['TSFE']->absRefPrefix.t3lib_div::rawUrlEncodeFP($info[3])).'" 
> width="'.$info[0].'" 
> height="'.$info[1].'"'.$this->getBorderAttr('border="'.intval($conf['border']).'"').(($conf['params'] 
> || is_array($conf['params.']))?' 
> '.$this->stdwrap($conf['params'],$conf['params.']):'').($altParam).' />';
> +       $theValue = '<img 
> src="'.htmlspecialchars($GLOBALS['TSFE']->absRefPrefix.t3lib_div::rawUrlEncodeFP($myImgFile)).'" 
> width="'.$myWidth.'" 
> height="'.$myHeight.'"'.$this->getBorderAttr('border="'.intval($conf['border']).'"').(($conf['params'] 
> || is_array($conf['params.']))?' 
> '.$this->stdwrap($conf['params'],$conf['params.']):'').($altParam).' />';

I think you don't need the 'noRescale' option. Just provide the 
'resolution' property and the rest can be calculated based on 72dpi 
default output resolution. So by setting the resolution to 300dpi (for 
imgResource, not for cImage), a image with 300px width would then get 
rendered with 1250px width (300px / 72dpi * 300dpi), while the img-tag 
properties stay at 300px. I think it would also be good if the create 
image itself would have the resolution set to 300dpi.

-- 
kind regards,
Franz Koch

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