Viewing file:  starter_graphics.php (7.36 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
<?php
#!/usr/bin/perl
# $Id: starter_graphics.php,v 1.1.2.1 2007/12/29 23:26:05 rjs Exp $
# Starter Graphics:
# Create some basic examples of vector graphics
#
# Stroke a line, curve, circle, arc, and rectangle using the current line width
# and stroke color. Stroke and fill a rectangle.
# Draw an arc segment by drawing a line and an arc, closing the path and
# filling and stroking it.
# Draw a rectangle and use it as the clipping a path. Draw and fill a circle
# using the clipping path defined.
#
# Required software: PDFlib Lite/PDFlib/PDFlib+PDI/PPS 7
# Required data: none
# This is where the data files are. Adjust as necessary.
$searchpath = "../data";
$title = "Starter Graphics";
# create a new PDFlib object
$p = PDF_new();
$xt=20;
$x = 210;
$y=770;
$dy=90;
PDF_set_parameter($p, "SearchPath", $searchpath);
# This means we must check return values of load_font() etc.
PDF_set_parameter($p, "errorpolicy", "return");
if (PDF_begin_document($p, "", "") == 0) {
die("Error: " . PDF_get_errmsg($p));
}
PDF_set_info($p, "Creator", "PDFlib Cookbook");
$buf = $title . ' $Revision: 1.1.2.1 $';
PDF_set_info($p, "Title", $buf);
# Load the font; for PDFlib Lite: change "unicode" to "winansi"
$font = PDF_load_font($p, "Helvetica", "winansi", "");
if ($font == 0) {
die("Error: " . PDF_get_errmsg($p));
}
# Start an A4 page
PDF_begin_page_ext($p, 0, 0, "width=a4.width height=a4.height");
# Set the font
PDF_setfont($p, $font, 14);
# Set the line width
PDF_setlinewidth($p, 2.0);
# Set the stroke color
PDF_setcolor($p, "stroke", "rgb", 0.0, 0.5, 0.5, 0.0);
# Set the fill color
PDF_setcolor($p, "fill", "rgb", 0.0, 0.85, 0.85, 0.0);
# -------------
# Stroke a line
# -------------
# Set the current point for graphics output
PDF_moveto($p, $x, $y);
# Draw a line from the current point to the supplied point
PDF_lineto($p, $x+300, $y+50);
# Stroke the path using the current line width and stroke color, and
# clear it
PDF_stroke($p);
# Output some descriptive black text
PDF_fit_textline($p, "lineto() and stroke()", $xt, $y,
"fillcolor={gray 0}");
# --------------
# Stroke a curve
# --------------
# Set the current point for graphics output
PDF_moveto($p, $x, $y-=$dy);
# Draw a Bézier curve from the current point to (x3, y3), using three
# control points
PDF_curveto($p, $x+50, $y+40, $x+200, $y+80, $x+300, $y+30);
# Stroke the path using the current line width and stroke color, and
# clear it
PDF_stroke($p);
# Output some descriptive black text
PDF_fit_textline($p, "curveto() and stroke()", $xt, $y,
"fillcolor={gray 0}");
# ---------------
# Stroke a circle
# ---------------
# Draw a circle at position (x, y) with a radius of 40
PDF_circle($p, $x, $y-=$dy, 40);
# Stroke the path using the current line width and stroke color, and
# clear it
PDF_stroke($p);
# Output some descriptive black text
PDF_fit_textline($p, "circle() and stroke()", $xt, $y,
"fillcolor={gray 0}");
# ---------------------
# Stroke an arc segment
# ---------------------
# Draw an arc segment counterclockwise at position (x, y) with a radius
# of 40 starting at an angle of 90 degrees and ending at 180 degrees
PDF_arc($p, $x, $y-=$dy+20, 40, 90, 180);
# Stroke the path using the current line width and stroke color, and
# clear it
PDF_stroke($p);
# Output some descriptive black text
PDF_fit_textline($p, "arc() and stroke()", $xt, $y,
"fillcolor={gray 0}");
# ------------------
# Stroke a rectangle
# ------------------
# Draw a rectangle at position (x, y) with a width of 200 and a height
# of 50
PDF_rect($p, $x, $y-=$dy, 200, 50);
# Stroke the path using the current line width and stroke color, and
# clear it
PDF_stroke($p);
# Output some descriptive black text
PDF_fit_textline($p, "rect() and stroke()", $xt, $y,
"fillcolor={gray 0}");
# ----------------
# Fill a rectangle
# ----------------
# Draw a rectangle at position (x, y) with a width of 200 and a height
# of 50
PDF_rect($p, $x, $y-=$dy, 200, 50);
# Fill the path using current fill color, and clear it
PDF_fill($p);
# Output some descriptive black text
PDF_fit_textline($p, "rect() and fill()", $xt, $y,
"fillcolor={gray 0}");
# ---------------------------
# Fill and stroke a rectangle
# ---------------------------
# Draw a rectangle at position (x, y) with a width of 200 and a height
# of 50
PDF_rect($p, $x, $y-=$dy, 200, 50);
# Fill and stroke the path using the current line width, fill color,
# and stroke color, and clear it
PDF_fill_stroke($p);
# Output some descriptive black text
PDF_fit_textline($p, "rect() and fill_stroke()", $xt, $y,
"fillcolor={gray 0}");
# -------------------------------------------------------------
# Draw a line and an arc, close the path and fill and stroke it
# -------------------------------------------------------------
# Set the current point for graphics output
PDF_moveto($p, $x-40, $y-=$dy);
# Draw a line from the current point to the supplied point
PDF_lineto($p, $x, $y);
# Draw an arc segment counterclockwise at position (x, y) with a radius
# of 40 starting at an angle of 90 degrees and ending at 180 degrees
PDF_arc($p, $x, $y, 40, 90, 180);
# Close the path and stroke and fill it, i.e. close the current subpath
# (add a straight line segment from the current point to the starting
# point of the path), and stroke and fill the complete current path
PDF_closepath_fill_stroke($p);
# Output some descriptive black text
PDF_fit_textline($p, "lineto(), arc(), and", $xt, $y+20,
"fillcolor={gray 0}");
PDF_fit_textline($p, "closepath_fill_stroke()", $xt, $y,
"fillcolor={gray 0}");
# -----------------------------------------------------------------
# Draw a rectangle and use it as the clipping a path. Draw and fill
# a circle and clip it according to the clipping path defined.
# -----------------------------------------------------------------
# Save the current graphics state including the current clipping
# path which is set to the entire page by default
PDF_save($p);
# Draw a rectangle at position (x, y) with a width of 200 and a height
# of 50
PDF_rect($p, $x, $y-=$dy, 200, 50);
# Use the current path as the clipping path for subsequent operations
PDF_clip($p);
# Draw a circle at position (x, y) with a radius of 100
PDF_circle($p, $x, $y, 80);
# Fill the path with the current fill color and clear it
PDF_fill($p);
# Restore the graphics state which has been saved above
PDF_restore($p);
# Output some descriptive black text
PDF_fit_textline($p, "rect(), clip(),", $xt, $y+20,
"fillcolor={gray 0}");
PDF_fit_textline($p, "circle(), and fill()", $xt, $y,
"fillcolor={gray 0}");
PDF_end_page_ext($p, "");
PDF_end_document($p, "");
$buf = PDF_get_buffer($p);
$len = strlen($buf);
header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=hello.pdf");
print $buf;
?>
|