PHP : Function Reference : Image Functions : imagepsbbox PHP Examples Tutorials References

Code Examples / Notes » imagepsbbox

daniel

When using imagepsbbox, you are probably trying to do something like creating a button with text, so that the button is large enough for the text... Below is a very simple example of making a black button just big enough to display white text on it. <?php //if text is no variable set sample text if (!$text) $text = "This is a sample text"; // set the font size $fontsize=14; // load the font to use $font=ImagePsLoadFont("/fonts/ariam___.pfb"); //get the left lower corner and the right upper list($lx,$ly,$rx,$ry) = imagepsbbox($text,$font,$fontsize,0,0,0); // calculate the size of the text $textwidth = $rx - $lx; $textheight = $ry - $ly; // make an image 40 pixels wider and 20 pixels higher than the text $imh = $textheight + 20; $imw = $textwidth + 40; $im = imageCreate( $imw, $imh ); //define colors, first color is used as background color! $black = ImageColorAllocate ($im, 0, 0, 0); $white = ImageColorAllocate ($im, 255, 255, 255); //create the text (with the same parameters as imagepsbbox!) ImagePSText ($im, "$text", $font, $fontsize, $white, $white, 20, 20,'','','',4); //send the header header("Content-type: image/jpeg"); // create the image ImageJPEG ($im,"",100); //destroy the image & font to free memory Imagepsfreefont ( $font ); ImageDestroy ( $im ); ?>

honza dot bartos

When using imagepsbbox, keep in mind, that meaning of y-coordinates is slightly different here. Y-coordinates returned by this function are related to the baseline of the text starting at point [0,0]. Positive values represent points ABOVE the baseline, negative values represent points BELOW the baseline. That is why the lower left y-coordinate is always smaller here than the upper right y-coordinate (these two coordinates are actualy values of metrics.descent and metrics.ascent - see T1Lib docs). So when you want to place some text using coordinates of the top left corner (for example [100,100]), use this: <?php $x = 100; $y = 100; $text = "Dodge this"; $fontsize=18; $font=imagepsloadfont("somefont.pfb"); list($lx,$ly,$rx,$ry) = imagepsbbox($text,$font,$fontsize); imagepstext ($someimage, $text, $font, $fontsize, $somecolor, $somecolor, $x, $y + $ry); ?> Hope it helps someone, I got stuck with this for a while.

imagepsbbox

Give the bounding box of a text rectangle using PostScript Type1 fonts (PHP 4, PHP 5)
array imagepsbbox ( string text, int font, int size [, int space, int tightness, float angle] )

Code Examples / Notes » imagepsbbox

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imagepsbbox

Give the bounding box of a text rectangle using PostScript Type1 fonts (PHP 4, PHP 5) array imagepsbbox ( string text, int font, int size [, int space, int tightness, float angle] )

Code Examples / Notes » imagepsbbox

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Give the bounding box of a text rectangle using PostScript Type1 fonts (PHP 4, PHP 5)
array imagepsbbox ( string text, int font, int size [, int space, int tightness, float angle] )