图像ttfbbox & imagettftext - 调整大小、位置、旋转
好吧,现在我正式花了 10 个小时来努力完成这项工作,但每一分钟我都离最终目标越来越远......
问题是,我需要创建一个函数、类或由所选 TTF 或 truetype 字体创建的任何内容,正确调整大小,并使用 url 给出的文本填充图像。图像不应比文本长。 我已经放弃了我所有的代码,到目前为止我得到的最好的东西是从网上获取的......
<?php
if(!isset($_GET['size'])) $_GET['size'] = 20;
if(!isset($_GET['text'])) $_GET['text'] = "Moj tekst";
$get_font = ( isset( $_GET['font'] ) ) ? $_GET['font'] : 'arial';
$size = imagettfbbox($_GET['size'], 0, "font/".$get_font.".ttf", $_GET['text']);
$xsize = abs($size[0]) + abs($size[2]);
$ysize = abs($size[5]) + abs($size[1]);
$image = imagecreate($xsize, $ysize);
imageSaveAlpha($image, true);
ImageAlphaBlending($image, false);
$transparentColor = imagecolorallocatealpha($image, 200, 200, 200, 127);
Imagefill($image, 0, 0, $transparentColor);
$blue = imagecolorallocate($image, 0, 0, 255);
$white = ImageColorAllocate($image, 255,255,255);
$black = ImageColorAllocate($image, 0,0,0); //-($_GET['size']/20)
imagettftext($image, $_GET['size'], 0, abs($size[0]), abs($size[5]), $black, "font/".$get_font.".ttf", $_GET['text']);
header("content-type: image/png");
imagepng($image);
imagedestroy($image);
?>
这个代码还可以,尽管最后一个或第一个后者的边缘有时被部分隐藏或只是它没有不适合创建的图像(取决于字体大小),这不是较小字体的问题。我真正需要的功能是通过更改图像的旋转来更改整个图像的比例,以便文本适合。
示例: http://img199.imageshack.us/img199/9368/32739521.jpg
另外,如果有完成的函数或类可以做到这一点,那就太好了.. :'( :)
Ok, now it's officialy 10 hours that I'm trying to make this work, but by every minute I'm farther and farther from the final goal...
The thing is, I need to create a function, class or whatever that by the selected TTF or truetype font create, properly resize, and fill the image with a text given by the url. The image shouldn't be longer than that text.
I've given up on all my codes, and the best thing I've got so far is taken from the net ...
<?php
if(!isset($_GET['size'])) $_GET['size'] = 20;
if(!isset($_GET['text'])) $_GET['text'] = "Moj tekst";
$get_font = ( isset( $_GET['font'] ) ) ? $_GET['font'] : 'arial';
$size = imagettfbbox($_GET['size'], 0, "font/".$get_font.".ttf", $_GET['text']);
$xsize = abs($size[0]) + abs($size[2]);
$ysize = abs($size[5]) + abs($size[1]);
$image = imagecreate($xsize, $ysize);
imageSaveAlpha($image, true);
ImageAlphaBlending($image, false);
$transparentColor = imagecolorallocatealpha($image, 200, 200, 200, 127);
Imagefill($image, 0, 0, $transparentColor);
$blue = imagecolorallocate($image, 0, 0, 255);
$white = ImageColorAllocate($image, 255,255,255);
$black = ImageColorAllocate($image, 0,0,0); //-($_GET['size']/20)
imagettftext($image, $_GET['size'], 0, abs($size[0]), abs($size[5]), $black, "font/".$get_font.".ttf", $_GET['text']);
header("content-type: image/png");
imagepng($image);
imagedestroy($image);
?>
This code is ok, although the edge of the last or first latter is sometimes partly hidden or just it doesn't fit into the created image (depending on font size), which isn't the problem with smaller font size. And the function i really need is by changing image's rotation to change the entire images proportions so the text fits in.
Example : http://img199.imageshack.us/img199/9368/32739521.jpg
Also, if there is finished function or class that does this, it would be great.. :'( :)
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如果您总是缺少开头结尾的一个字母,为什么不将单个字母的宽度添加到最终尺寸中呢?
根据我的经验,imagettfbbox 并不能很好地决定什么适合什么不适合边界框 - 你需要自己捏造一下:)
希望这会有所帮助。
卢克·彼得森
If you are always missing one letter of the end of the beginning, why not just add the width of a single letter to your final size?
In my experience, imagettfbbox doesn't do a very good job of deciding what does and doesn't fit within a bounding box - you need to fudge it a little yourself :)
Hope this helps.
Luke Peterson