动态GD图像宽度文本

发布于 2024-08-11 09:02:03 字数 797 浏览 2 评论 0原文

我正在尝试通过使用自定义字体来为我的网站增添趣味。对我来说，最合适的方法是使用 PHP 和 GD。我编写了一个小脚本，它将根据 $_GET 值输出动态文本，但有时图像太宽，这会移动其他所有内容。

如何让图像根据文本的宽度调整其宽度？这是我到目前为止编写的代码：

<?php
// Settings
$sText = $_GET['t']; // Text of heading
$sFont = "font/AvantGarde-Book.ttf"; // Default font for headings
$sMain = $_GET['c'] ? $_GET['c'] : 0xF2AB27; // Get a font or default it

// Create the image
header("content-type: image/png"); // Set the content-type
$hImage = imagecreatetruecolor(200, 24);
ImageFill($hImage, 0, 0, IMG_COLOR_TRANSPARENT);
imagesavealpha($hImage, true);
imagealphablending($hImage, false);
imagettftext($hImage, 20, 0, 0, 24, $sMain, $sFont, $sText); // Draw the text
imagepng($hImage); // Generate the image
imagedestroy($hImage); // Destroy it from the cache ?>

谢谢！

原文

I'm trying to spice up my website by using custom fonts for headings. For me, the most appropriate way to do this is using PHP and GD. I have written a little script which will output the dynamic text based on the $_GET value, however sometimes the image is too wide, which moves everything else about.

How can I get the image to adjust the width of it, based on the width of the text? Here is the code I've written so far:

<?php
// Settings
$sText = $_GET['t']; // Text of heading
$sFont = "font/AvantGarde-Book.ttf"; // Default font for headings
$sMain = $_GET['c'] ? $_GET['c'] : 0xF2AB27; // Get a font or default it

// Create the image
header("content-type: image/png"); // Set the content-type
$hImage = imagecreatetruecolor(200, 24);
ImageFill($hImage, 0, 0, IMG_COLOR_TRANSPARENT);
imagesavealpha($hImage, true);
imagealphablending($hImage, false);
imagettftext($hImage, 20, 0, 0, 24, $sMain, $sFont, $sText); // Draw the text
imagepng($hImage); // Generate the image
imagedestroy($hImage); // Destroy it from the cache ?>

Thanks!

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雨巷深深 2024-08-18 09:02:04

好吧，我明白了！对于可能遇到此问题的其他人，您需要添加：

// Calcuate the width of the image
$arSize = imagettfbbox(24, 0, $sFont, $sText);
$iWidth = abs($arSize[2] - $arSize[0]);
$iHeight = abs($arSize[7] - $arSize[1]);

在 imagecreatetruecolor() 之前

Ok, I figured it out! For anyone else who may have this problem, you need to add:

// Calcuate the width of the image
$arSize = imagettfbbox(24, 0, $sFont, $sText);
$iWidth = abs($arSize[2] - $arSize[0]);
$iHeight = abs($arSize[7] - $arSize[1]);

Before the imagecreatetruecolor()

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