16. marts 2004 - 05:24
Der er
1 løsning
Funtion til at højrestille tekst
Hej,
Jeg mangler en function der kan højrestille tekst på et billede genereret med GDlib.
Her er min foreløbige kode:
<?php
if ($_GET['hr'] >= 0 && $_GET['text']) {
$text = $_GET['text'];
$thick = $_GET['hr'];
function imagelinethick($image, $x1, $y1, $x2, $y2, $color, $thick = 1) {
/* this way it works well only for orthogonal lines
imagesetthickness($image, $thick);
return imageline($image, $x1, $y1, $x2, $y2, $color);
*/
if ($thick == 1) {
return imageline($image, $x1, $y1, $x2, $y2, $color);
}
$t = $thick / 2 - 0.5;
if ($x1 == $x2 || $y1 == $y2) {
return imagefilledrectangle($image, round(min($x1, $x2) - $t), round(min($y1, $y2) - $t), round(max($x1, $x2) + $t), round(max($y1, $y2) + $t), $color);
}
$k = ($y2 - $y1) / ($x2 - $x1); //y = kx + q
$a = $t / sqrt(1 + pow($k, 2));
$points = array(
round($x1 - (1+$k)*$a), round($y1 + (1-$k)*$a),
round($x1 - (1-$k)*$a), round($y1 - (1+$k)*$a),
round($x2 + (1+$k)*$a), round($y2 - (1-$k)*$a),
round($x2 + (1-$k)*$a), round($y2 + (1+$k)*$a),
);
imagefilledpolygon($image, $points, 4, $color);
return imagepolygon($image, $points, 4, $color);
}
$im = imagecreatetruecolor(250, 20);
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0,0,0);
imagefill($im, 0, 0, $white);
imagettftext($im, 11, 0, 0,15, $black, "fonts/verdana.ttf", $text);
imagelinethick($im, 0,18,250,18,$black,$thick);
header("Content-type: image/png");
imagepng($im);
imagedestroy($im);
header ("Content-type: image/png");
}
?>
16. marts 2004 - 10:07
#1
LØSNING:
<?php
if ($_GET['hr'] >= 0 && $_GET['text']) {
$text = $_GET['text'];
$thick = $_GET['hr'];
function imagelinethick($image, $x1, $y1, $x2, $y2, $color, $thick = 1) {
/* this way it works well only for orthogonal lines
imagesetthickness($image, $thick);
return imageline($image, $x1, $y1, $x2, $y2, $color);
*/
if ($thick == 1) {
return imageline($image, $x1, $y1, $x2, $y2, $color);
}
$t = $thick / 2 - 0.5;
if ($x1 == $x2 || $y1 == $y2) {
return imagefilledrectangle($image, round(min($x1, $x2) - $t), round(min($y1, $y2) - $t), round(max($x1, $x2) + $t), round(max($y1, $y2) + $t), $color);
}
$k = ($y2 - $y1) / ($x2 - $x1); //y = kx + q
$a = $t / sqrt(1 + pow($k, 2));
$points = array(
round($x1 - (1+$k)*$a), round($y1 + (1-$k)*$a),
round($x1 - (1-$k)*$a), round($y1 - (1+$k)*$a),
round($x2 + (1+$k)*$a), round($y2 - (1-$k)*$a),
round($x2 + (1-$k)*$a), round($y2 + (1+$k)*$a),
);
imagefilledpolygon($image, $points, 4, $color);
return imagepolygon($image, $points, 4, $color);
}
function fixbbox($bbox) {
$tmp_bbox["left"] = min($bbox[0],$bbox[2],$bbox[4],$bbox[6]);
$tmp_bbox["top"] = min($bbox[1],$bbox[3],$bbox[5],$bbox[7]);
$tmp_bbox["width"] = max($bbox[0],$bbox[2],$bbox[4],$bbox[6]) - min($bbox[0],$bbox[2],$bbox[4],$bbox[6]) + 1;
$tmp_bbox["height"] = max($bbox[1],$bbox[3],$bbox[5],$bbox[7]) - min($bbox[1],$bbox[3],$bbox[5],$bbox[7]);
$tmp_bbox["left"] = 0 - $tmp_bbox["left"];
$tmp_bbox["top"] = 0 - $tmp_bbox["top"];
return $tmp_bbox;
}
$imgw = 250;
$imgh = 20;
$im = imagecreatetruecolor($imgw, $imgh);
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0,0,0);
imagefill($im, 0, 0, $white);
$bbox = fixbbox(imagettfbbox(11, 0, "fonts/verdana.ttf", $text));
imagettftext($im, 11, 0, $imgw-$bbox[width], $bbox[height], $black, "fonts/verdana.ttf", $text);
imagelinethick($im, 0,18,250,18,$black,$thick);
header("Content-type: image/png");
imagepng($im);
imagedestroy($im);
}
?>
