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Date: 10/29/99
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eschmid Fri Oct 29 13:16:37 1999 EDT
Modified files:
/phpdoc/functions image.sgml
Log:
One typo and many formattings.
Index: phpdoc/functions/image.sgml
diff -u phpdoc/functions/image.sgml:1.6 phpdoc/functions/image.sgml:1.7
--- phpdoc/functions/image.sgml:1.6 Wed Oct 20 18:41:42 1999
+++ phpdoc/functions/image.sgml Fri Oct 29 13:16:07 1999
@@ -4,9 +4,10 @@
<partintro>
<simpara>
- You can use the image functions in PHP to get the size of JPEG, GIF, and
- PNG images, and if you have the GD library (available at <ulink url="&url.gd;">&url.gd;</ulink>) you will also be able to create and
- manipulate images.</simpara>
+ You can use the image functions in PHP to get the size of JPEG,
+ GIF, and PNG images, and if you have the GD library (available at
+ <ulink url="&url.gd;">&url.gd;</ulink>) you will also be able to
+ create and manipulate images.</simpara>
</partintro>
<refentry id="function.getimagesize">
@@ -43,13 +44,15 @@
</programlisting></example></para>
<para>
- The optional <parameter>imageinfo</parameter> parameter allows you to
- extract some extended information from the image file. Currently this
- will return the diffrent <acronym>JPG</acronym> APP markers in an
- associative Array. Some Programs use these APP markers to embedd text
- information in images. A very common one in to embed IPTC <ulink url="&url.iptc;">&url.iptc;</ulink> information in the APP13 marker. You
- can use the <function>iptcparse</function> function to parse the binary
- APP13 marker into something readable.
+ The optional <parameter>imageinfo</parameter> parameter allows
+ you to extract some extended information from the image
+ file. Currently this will return the diffrent
+ <acronym>JPG</acronym> APP markers in an associative Array. Some
+ Programs use these APP markers to embedd text information in
+ images. A very common one in to embed IPTC <ulink
+ url="&url.iptc;">&url.iptc;</ulink> information in the APP13
+ marker. You can use the <function>iptcparse</function> function
+ to parse the binary APP13 marker into something readable.
<example>
<title>GetImageSize returning IPTC</title>
<programlisting>
@@ -114,11 +117,12 @@
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
<para>
- ImageChar draws the first character of <parameter>c</parameter> in the image
- identified by <parameter>id</parameter> with its upper-left at
- <parameter>x</parameter>,<parameter>y</parameter> (top left is 0,0) with the
- color <parameter>col</parameter>. If font is 1, 2, 3, 4 or 5, a built-in font is
- used (with higher numbers corresponding to larger fonts).</para>
+ ImageChar draws the first character of <parameter>c</parameter>
+ in the image identified by <parameter>id</parameter> with its
+ upper-left at <parameter>x</parameter>,<parameter>y</parameter>
+ (top left is 0,0) with the color <parameter>col</parameter>. If
+ font is 1, 2, 3, 4 or 5, a built-in font is used (with higher
+ numbers corresponding to larger fonts).</para>
<para>
See also <function>imageloadfont</function>.</para>
@@ -141,11 +145,13 @@
<paramdef>string <parameter>c</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageCharUp draws the character c vertically in the
- image identified by im at coordinates x,
- y (top left is 0, 0) with the color col.
- If font is 1, 2, 3, 4 or 5, a built-in font is used.</para>
- <para> See also <function>imageloadfont</function>.</para>
+ <para>
+ ImageCharUp draws the character c vertically in the image
+ identified by im at coordinates x, y (top left is 0, 0) with the
+ color col. If font is 1, 2, 3, 4 or 5, a built-in font is
+ used.</para>
+ <para>
+ See also <function>imageloadfont</function>.</para>
</refsect1>
</refentry>
@@ -163,11 +169,12 @@
<paramdef>int <parameter>green</parameter></paramdef>
<paramdef>int <parameter>blue</parameter></paramdef>
</funcsynopsis>
- <para>
- ImageColorAllocate returns a color identifier representing the color composed of
- the given RGB components. The im argument is the return from the
- <function>imagecreate</function> function. ImageColorAllocate must be called to
- create each color that is to be used in the image represented by im.
+ <para>
+ ImageColorAllocate returns a color identifier representing the
+ color composed of the given RGB components. The im argument is
+ the return from the <function>imagecreate</function> function.
+ ImageColorAllocate must be called to create each color that is to
+ be used in the image represented by im.
<informalexample><programlisting>
$white = ImageColorAllocate($im, 255,255,255);
$black = ImageColorAllocate($im, 0,0,0);
@@ -215,9 +222,9 @@
Returns the index of the color in the palette of the image
which is "closest" to the specified RGB value.</para>
<para>
- The "distance" between the desired color and each color in the palette is
- calculated as if the RGB values represented points in three-dimensional
- space.</para>
+ The "distance" between the desired color and each color in the
+ palette is calculated as if the RGB values represented points in
+ three-dimensional space.</para>
<para>
See also <function>imagecolorexact</function>.</para>
</refsect1>
@@ -238,9 +245,11 @@
<paramdef>int <parameter>blue</parameter></paramdef>
</funcsynopsis>
<para>
- Returns the index of the specified color in the palette of the image.</para>
+ Returns the index of the specified color in the palette of the
+ image.</para>
<para>
- If the color does not exist in the image's palette, -1 is returned.</para>
+ If the color does not exist in the image's palette, -1 is
+ returned.</para>
<para>
See also <function>imagecolorclosest</function>.</para>
</refsect1>
@@ -261,8 +270,9 @@
<paramdef>int <parameter>blue</parameter></paramdef>
</funcsynopsis>
<para>
- This function is guaranteed to return a color index for a requested color, either the exact color
- or the closest possible alternative.</para>
+ This function is guaranteed to return a color index for a
+ requested color, either the exact color or the closest possible
+ alternative.</para>
<para>
See also <function>imagecolorclosest</function>.</para>
</refsect1>
@@ -307,7 +317,8 @@
</funcsynopsis>
<para>
This returns an associative array with red, green, and blue keys
- that contain the appropriate values for the specified color index.</para>
+ that contain the appropriate values for the specified color
+ index.</para>
<para>
See also <function>imagecolorat</function> and
<function>imagecolorexact</function>.</para>
@@ -347,12 +358,12 @@
</funcsynopsis>
<para>
ImageColorTransparent sets the transparent color in the im image
- to col. im is the image identifier returned by <function>imagecreate</function>
- and col is a color identifier returned by
- <function>imagecolorallocate</function>.</para>
+ to col. im is the image identifier returned by
+ <function>imagecreate</function> and col is a color identifier
+ returned by <function>imagecolorallocate</function>.</para>
<para>
- The identifier of the new (or current, if none is specified) transparent
- color is returned.</para>
+ The identifier of the new (or current, if none is specified)
+ transparent color is returned.</para>
</refsect1>
</refentry>
@@ -402,8 +413,9 @@
<paramdef>int <parameter>x_size</parameter></paramdef>
<paramdef>int <parameter>y_size</parameter></paramdef>
</funcsynopsis>
-<para> ImageCreate returns an image identifier representing a blank image
- of size x_size by y_size.</para>
+ <para>
+ ImageCreate returns an image identifier representing a blank
+ image of size x_size by y_size.</para>
</refsect1>
</refentry>
@@ -467,11 +479,11 @@
<paramdef>int <parameter>y2</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageLine draws a dashed line from x1,y1 to
- x2,y2 (top left is
- 0,0) in image im of color
- col.</para>
- <para> See also <function>imageline</function>.</para>
+ <para>
+ ImageLine draws a dashed line from x1,y1 to x2,y2 (top left is
+ 0,0) in image im of color col.</para>
+ <para>
+ See also <function>imageline</function>.</para>
</refsect1>
</refentry>
@@ -486,9 +498,10 @@
<funcdef>int <function>imagedestroy</function></funcdef>
<paramdef>int <parameter>im</parameter></paramdef>
</funcsynopsis>
-<para> ImageDestroy frees any memory associated with image im. im is the
- image identifier returned by the <function>imagecreate</function>
- function.</para>
+ <para>
+ ImageDestroy frees any memory associated with image im. im is
+ the image identifier returned by the
+ <function>imagecreate</function> function.</para>
</refsect1>
</refentry>
@@ -506,7 +519,9 @@
<paramdef>int <parameter>y</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageFill performs a flood fill starting at coordinate x, y (top left is 0,0) with color col in the image im.</para>
+ <para>
+ ImageFill performs a flood fill starting at coordinate x, y (top
+ left is 0,0) with color col in the image im.</para>
</refsect1>
</refentry>
@@ -524,11 +539,11 @@
<paramdef>int <parameter>num_points</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageFilledPolygon creates a filled polygon in image im. points is a PHP array containing the
- polygon's vertices, ie. points[0] = x0,
- points[1] = y0, points[2] = x1,
- points[3] = y1, etc. num_points is the
- total number of vertices.</para>
+ <para>
+ ImageFilledPolygon creates a filled polygon in image im. points
+ is a PHP array containing the polygon's vertices, ie. points[0] =
+ x0, points[1] = y0, points[2] = x1, points[3] = y1, etc.
+ num_points is the total number of vertices.</para>
</refsect1>
</refentry>
@@ -548,10 +563,11 @@
<paramdef>int <parameter>y2</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageFilledRectangle creates a filled rectangle of color col in
- image im starting at upper left coordinates x1,
- y1 and ending at bottom right coordinates x2, y2. 0, 0 is the
- top left corner of the image.</para>
+ <para>
+ ImageFilledRectangle creates a filled rectangle of color col in
+ image im starting at upper left coordinates x1, y1 and ending at
+ bottom right coordinates x2, y2. 0, 0 is the top left corner of
+ the image.</para>
</refsect1>
</refentry>
@@ -570,11 +586,10 @@
<paramdef>int <parameter>border</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageFillToBorder performs a flood fill whose border color is
- defined by border. The starting point for the fill
- is x,y (top left is
- 0,0) and the region is filled with color
- col.</para>
+ <para>
+ ImageFillToBorder performs a flood fill whose border color is
+ defined by border. The starting point for the fill is x,y (top
+ left is 0,0) and the region is filled with color col.</para>
</refsect1>
</refentry>
@@ -608,8 +623,11 @@
<funcdef>int <function>imagefontwidth</function></funcdef>
<paramdef>int <parameter>font</parameter></paramdef>
</funcsynopsis>
-<para> Returns the pixel width of a character in font.</para>
- <para> See also <function>imagefontheight</function> and <function>imageloadfont</function>.</para>
+ <para>
+ Returns the pixel width of a character in font.</para>
+ <para>
+ See also <function>imagefontheight</function> and
+ <function>imageloadfont</function>.</para>
</refsect1>
</refentry>
@@ -626,24 +644,24 @@
<paramdef>string <parameter>filename</parameter></paramdef>
</funcsynopsis>
<para>
- <function>imagegif</function> creates the GIF file in filename from
- the image <parameter>im</parameter>. The <parameter>im</parameter>
- argument is the return from the <function>imagecreate</function>
- function.</para>
+ <function>imagegif</function> creates the GIF file in filename
+ from the image <parameter>im</parameter>. The
+ <parameter>im</parameter> argument is the return from the
+ <function>imagecreate</function> function.</para>
<para>
The image format will be GIF87a unless the image has been made
transparent with <function>imagecolortransparent</function>, in
which case the image format will be GIF89a.</para>
<para>
The filename argument is optional, and if left off, the raw image
- stream will be output directly. By sending an image/gif content-type
- using <function>header</function>, you can create a PHP script that
- outputs GIF images directly.
+ stream will be output directly. By sending an image/gif
+ content-type using <function>header</function>, you can create a
+ PHP script that outputs GIF images directly.
<note>
<para>
- Since all GIF support was removed from the GD library in version 1.6,
- this function is not available if you are using that version of the
- GD library.</para>
+ Since all GIF support was removed from the GD library in version
+ 1.6, this function is not available if you are using that
+ version of the GD library.</para>
</note></para>
</refsect1>
@@ -666,7 +684,8 @@
If interlace is 1 the im image will be interlaced, and if interlace
is 0 the interlace bit is turned off.</para>
<para>
- This functions returns whether the interlace bit is set for the image.</para>
+ This functions returns whether the interlace bit is set for the
+ image.</para>
</refsect1>
</refentry>
@@ -686,11 +705,12 @@
<paramdef>int <parameter>y2</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageLine draws a line from x1,y1 to
- x2,y2 (top left is
- 0,0) in image im of color
- col.</para>
- <para> See also <function>imagecreate</function> and <function>imagecolorallocate</function>.</para>
+ <para>
+ ImageLine draws a line from x1,y1 to x2,y2 (top left is 0,0) in
+ image im of color col.</para>
+ <para>
+ See also <function>imagecreate</function> and
+ <function>imagecolorallocate</function>.</para>
</refsect1>
</refentry>
@@ -707,14 +727,12 @@
</funcsynopsis>
<para>
ImageLoadFont loads a user-defined bitmap font and returns an
- identifier for the font (that is always greater than 5, so it will
- not conflict with the built-in fonts).</para>
-
+ identifier for the font (that is always greater than 5, so it
+ will not conflict with the built-in fonts).</para>
<para>
The font file format is currently binary and architecture
dependent. This means you should generate the font files on the
same type of CPU as the machine you are running PHP on.</para>
-
<para>
<table>
<title>Font file format</title>
@@ -783,10 +801,13 @@
<paramdef>int <parameter>num_points</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImagePolygon creates a polygon in image id. points is a PHP array containing the polygon's vertices,
- ie. points[0] = x0, points[1] = y0,
- points[2] = x1, points[3] = y1, etc. num_points is the total number of vertices.</para>
- <para> See also <function>imagecreate</function>.</para>
+ <para>
+ ImagePolygon creates a polygon in image id. points is a PHP
+ array containing the polygon's vertices, ie. points[0] = x0,
+ points[1] = y0, points[2] = x1, points[3] = y1, etc. num_points
+ is the total number of vertices.</para>
+ <para>
+ See also <function>imagecreate</function>.</para>
</refsect1>
</refentry>
@@ -809,24 +830,29 @@
<para>
<parameter>size</parameter> is expressed in pixels.</para>
<para>
- <parameter>space</parameter> allows you to change the default value of a space in a font.
- This amount is added to the normal value and can also be negative.</para>
+ <parameter>space</parameter> allows you to change the default
+ value of a space in a font. This amount is added to the normal
+ value and can also be negative.</para>
<para>
- <parameter>tightness</parameter> allows you to control the amount of white space
- between characters. This amount is added to the normal character width and can also be negative.</para>
+ <parameter>tightness</parameter> allows you to control the amount
+ of white space between characters. This amount is added to the
+ normal character width and can also be negative.</para>
<para>
<parameter>angle</parameter> is in degrees.</para>
<para>
- Parameters <parameter>space</parameter> and <parameter>tightness</parameter>
- are expressed in character space units, where 1 unit is 1/1000th of an em-square.</para>
+ Parameters <parameter>space</parameter> and
+ <parameter>tightness</parameter> are expressed in character space
+ units, where 1 unit is 1/1000th of an em-square.</para>
<para>
- Parameters <parameter>space</parameter>, <parameter>tightness</parameter> and
- <parameter>angle</parameter> are optional.</para>
+ Parameters <parameter>space</parameter>,
+ <parameter>tightness</parameter> and <parameter>angle</parameter>
+ are optional.</para>
<para>
- The bounding box is calculated using information available from character metrics,
- and unfortunately tends to differ slightly from the results achieved by actually
- rasterizing the text. If the angle is 0 degrees, you can expect the text to need
- 1 pixel more to every direction.</para>
+ The bounding box is calculated using information available from
+ character metrics, and unfortunately tends to differ slightly
+ from the results achieved by actually rasterizing the text. If
+ the angle is 0 degrees, you can expect the text to need 1 pixel
+ more to every direction.</para>
<para>
This function returns an array containing the following elements:
<informaltable>
@@ -872,20 +898,24 @@
<paramdef>int <parameter>fontindex</parameter></paramdef>
</funcsynopsis>
<para>
- Use this function if you need make further modifications to the font,
- for example extending/condensing, slanting it or changing it's character
- encoding vector, but need to keep the original along as well. Note that
- the font you want to copy must be one obtained using <function>imagepsloadfont</function>,
- not a font that is itself a copied one. You can although make modifications to it before copying,
- <para>
- If you use this function, you <emphasis>must</emphasis> free the fonts obtained this
- way yourself and in reverse order. Otherwise your script <emphasis>will</emphasis> hang.
- <para>
- In the case everything went right, a valid font index will be returned and
- can be used for further purposes. Otherwise the function returns false and
- prints a message describing what went wrong.
+ Use this function if you need make further modifications to the
+ font, for example extending/condensing, slanting it or changing
+ it's character encoding vector, but need to keep the original
+ along as well. Note that the font you want to copy must be one
+ obtained using <function>imagepsloadfont</function>, not a font
+ that is itself a copied one. You can although make modifications
+ to it before copying.</para>
+ <para>
+ If you use this function, you <emphasis>must</emphasis> free the
+ fonts obtained this way yourself and in reverse order. Otherwise
+ your script <emphasis>will</emphasis> hang.</para>
+ <para>
+ In the case everything went right, a valid font index will be
+ returned and can be used for further purposes. Otherwise the
+ function returns false and prints a message describing what went
+ wrong.</para>
<para>
- See also <function>imageploadpsfont</function>.
+ See also <function>imageploadpsfont</function>.</para>
</refsect1>
</refentry>
-->
@@ -901,13 +931,13 @@
<funcdef>int <function>imagepsencodefont</function></funcdef>
<paramdef>string <parameter>encodingfile</parameter></paramdef>
</funcsynopsis>
-
<para>
- Loads a character encoding vector from from a file and changes the fonts
- encoding vector to it. As a PostScript fonts default vector lacks most of the
- character positions above 127, you'll definitely want to change this if
- you use an other language than english. The exact format of this file is
- described in T1libs documentation. T1lib comes with two ready-to-use files,
+ Loads a character encoding vector from from a file and changes
+ the fonts encoding vector to it. As a PostScript fonts default
+ vector lacks most of the character positions above 127, you'll
+ definitely want to change this if you use an other language than
+ english. The exact format of this file is described in T1libs
+ documentation. T1lib comes with two ready-to-use files,
IsoLatin1.enc and IsoLatin2.enc.</para>
<para>
If you find yourself using this function all the time, a much
@@ -946,9 +976,10 @@
<paramdef>string <parameter>filename</parameter></paramdef>
</funcsynopsis>
<para>
- In the case everything went right, a valid font index will be returned and
- can be used for further purposes. Otherwise the function returns false and
- prints a message describing what went wrong.</para>
+ In the case everything went right, a valid font index will be
+ returned and can be used for further purposes. Otherwise the
+ function returns false and prints a message describing what went
+ wrong.</para>
<para>
See also <function>imagepsfreefont</function>.</para>
</refsect1>
@@ -960,7 +991,7 @@
<refpurpose>to draw a text string over an image using PostScript Type1 fonts</refpurpose>
</refnamediv>
<refsect1>
- <title>Descriptiom</title>
+ <title>Description</title>
<funcsynopsis>
<funcdef>array <function>imagepstext</function></funcdef>
<paramdef>int <parameter>image</parameter></paramdef>
@@ -1067,9 +1098,11 @@
<paramdef>int <parameter>y2</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageRectangle creates a rectangle of color col in image im
- starting at upper left coordinate x1,y1 and ending at bottom right coordinate x2,y2. 0,0 is the top
- left corner of the image.</para>
+ <para>
+ ImageRectangle creates a rectangle of color col in image im
+ starting at upper left coordinate x1,y1 and ending at bottom
+ right coordinate x2,y2. 0,0 is the top left corner of the
+ image.</para>
</refsect1>
</refentry>
@@ -1087,10 +1120,11 @@
<paramdef>int <parameter>y</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageSetPixel draws a pixel at x,y
- (top left is 0,0) in image im
- of color col.</para>
- <para> See also <function>imagecreate</function> and <function>imagecolorallocate</function>.</para>
+ <para>
+ ImageSetPixel draws a pixel at x,y (top left is 0,0) in image im
+ of color col.</para> <para> See also
+ <function>imagecreate</function> and
+ <function>imagecolorallocate</function>.</para>
</refsect1>
</refentry>
@@ -1110,10 +1144,11 @@
<paramdef>string <parameter>s</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageString draws the string s in the image identified by im at coordinates x,y (top
- left is 0,0) in color col. If
- font is 1, 2, 3, 4 or 5, a built-in font is used.</para>
- <para> See also <function>imageloadfont</function>.</para>
+ <para>
+ ImageString draws the string s in the image identified by im at
+ coordinates x,y (top left is 0,0) in color col. If font is 1, 2,
+ 3, 4 or 5, a built-in font is used.</para> <para> See also
+ <function>imageloadfont</function>.</para>
</refsect1>
</refentry>
@@ -1133,11 +1168,11 @@
<paramdef>string <parameter>s</parameter></paramdef>
<paramdef>int <parameter>col</parameter></paramdef>
</funcsynopsis>
-<para> ImageStringUp draws the string s vertically in the image
- identified by im at coordinates x,y (top left is 0,0)
- in color col.
- If font is 1, 2, 3, 4 or 5, a built-in font is used.</para>
- <para> See also <function>imageloadfont</function>.</para>
+ <para>
+ ImageStringUp draws the string s vertically in the image
+ identified by im at coordinates x,y (top left is 0,0) in color
+ col. If font is 1, 2, 3, 4 or 5, a built-in font is used.</para>
+ <para> See also <function>imageloadfont</function>.</para>
</refsect1>
</refentry>
@@ -1152,9 +1187,10 @@
<funcdef>int <function>imagesx</function></funcdef>
<paramdef>int <parameter>im</parameter></paramdef>
</funcsynopsis>
-<para> ImageSX returns the width of the image identified by
- im.</para>
- <para> See also <function>imagecreate</function> and <function>imagesy</function>.</para>
+ <para>
+ ImageSX returns the width of the image identified by im.</para>
+ <para> See also <function>imagecreate</function> and
+ <function>imagesy</function>.</para>
</refsect1>
</refentry>
@@ -1260,7 +1296,8 @@
regardless of the angle, so "upper left" means in the top
left-hand corner seeing the text horizontallty.</para>
<para>
- This function requires both the GD library and the Freetype library.</para>
+ This function requires both the GD library and the Freetype
+ library.</para>
<para>
See also <function>ImageTTFText</function>.</para>
</refsect1>
@@ -1306,13 +1343,14 @@
<para>
<parameter>fontfile</parameter> is the path to the TrueType font
you wish to use.</para>
- <para>
- <parameter>text</parameter> is the text string which may include
- UTF-8 character sequences (of the form: &#123; ) to access
- characters in a font beyond the first 255.</para>
<para>
- <parameter>col</parameter> is the color index. Using the negative
- of a color index has the effect of turning off antialiasing.</para>
+ <parameter>text</parameter> is the text string which may include
+ UTF-8 character sequences (of the form: &#123; ) to access
+ characters in a font beyond the first 255.</para>
+ <para>
+ <parameter>col</parameter> is the color index. Using the
+ negative of a color index has the effect of turning off
+ antialiasing.</para>
<para>
<function>ImageTTFText</function> returns an array with 8
elements representing four points making the bounding box of the
@@ -1338,7 +1376,8 @@
</programlisting></example></para>
<para>
- This function requires both the GD library and the <ulink url="&url.freetype;">FreeType</ulink> library.</para>
+ This function requires both the GD library and the <ulink
+ url="&url.freetype;">FreeType</ulink> library.</para>
<para>
See also <function>ImageTTFBBox</function>.</para>
</refsect1>
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