"Ziying Sherwin" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
>
>
> In our application, we need to write a UTF8 strings to the image using
True
> Type fonts. The php function that we are using is imagettftext. However,
> we have the two problems regarding that function:
>
> 1. The images that are generated by this function is white fonts on the
black
> background. But what we want is black fonts on the white background. It
> seems impossible to set the background color. What we are doing now is
to
> call external commands to reverse the color which is rather slow. Is
there
> better way to achieve the same result?
How about this example:
var $width = 200;
var $height = 50;
var $offset_x = 0;
var $offset_y = 10;
var $font = '/usr/share/fonts/times.ttf'; //default font.
var $msg = "Hello!";
var $size = 24;
var $rot = 0; // rotation in degrees.
var $transparent = 1; // transparency set to on.
var $red = 0; // black text...
var $grn = 0;
var $blu = 0;
var $bg_red = 255; // on white background.
var $bg_grn = 255;
var $bg_blu = 255;
var $truecolor = false;
if($truecolor) {
$image = ImageCreateTrueColor($width,$height);
$background = ImageColorResolveAlpha($image, $bg_red, $bg_grn,
$bg_blu, $transparent?127:0);
$foreground = ImageColorAllocate($image, $red, $grn, $blu);
ImageFilledRectangle($image, 0, 0, $width, $height, $background);
} else {
$image = ImageCreate($width, $height);
$background = ImageColorAllocate($image, $bg_red, $bg_grn, $bg_blu);
if($transparent)
ImageColorTransparent($image, $background);
ImageFilledRectangle($image, 0, 0, $width, $height, $background);
$foreground = ImageColorAllocate($image, $red, $grn, $blu);
}
ImageTTFText($image, $size, $rot, $offset_x, $offset_y, $foreground,
$font, $msg);
Header("Content-type: image/png");
ImagePNG($image);
> 2. We also have long UTF8 stings that need to be broken into several
lines.
> Which php function has the ability to properly break UTF8 strings? And
> how to display multiple lines using imagettftext?
I guess you have to develop an algorithm do line breaks your self
ImageTTFBBox() should provide you with data to make it possible.
--
Stellan Klebom
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