/* $Id: starter_graphics.java,v 1.1 2007/11/05 16:01:15 katja 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 */ package com.pdflib.cookbook.pdflib.graphics; import com.pdflib.pdflib; import com.pdflib.PDFlibException; public class starter_graphics { public static void main (String argv[]) { /* This is where the data files are. Adjust if necessary. */ String searchpath = "../input"; String outfile = "starter_graphics.pdf"; String title = "Starter Graphics"; double xt=20, x = 210, y=770, dy=90; pdflib p = null; int font; try { p = new pdflib(); p.set_parameter("SearchPath", searchpath); /* This means we must check return values of load_font() etc. */ p.set_parameter("errorpolicy", "return"); if (p.begin_document(outfile, "") == -1) throw new Exception("Error: " + p.get_errmsg()); p.set_info("Creator", "PDFlib Cookbook"); p.set_info("Title", title + " $Revision: 1.1 $"); /* Load the font; for PDFlib Lite: change "unicode" to "winansi" */ font = p.load_font("Helvetica", "unicode", ""); if (font == -1) throw new Exception("Error: " + p.get_errmsg()); /* Start an A4 page */ p.begin_page_ext(0, 0, "width=a4.width height=a4.height"); /* Set the font */ p.setfont(font, 14); /* Set the line width */ p.setlinewidth(2.0); /* Set the stroke color */ p.setcolor("stroke", "rgb", 0.0, 0.5, 0.5, 0.0); /* Set the fill color */ p.setcolor("fill", "rgb", 0.0, 0.85, 0.85, 0.0); /* ------------- * Stroke a line * ------------- */ /* Set the current point for graphics output */ p.moveto(x, y); /* Draw a line from the current point to the supplied point */ p.lineto(x+300, y+50); /* Stroke the path using the current line width and stroke color, and * clear it */ p.stroke(); /* Output some descriptive black text */ p.fit_textline("lineto() and stroke()", xt, y, "fillcolor={gray 0}"); /* -------------- * Stroke a curve * -------------- */ /* Set the current point for graphics output */ p.moveto(x, y-=dy); /* Draw a Bézier curve from the current point to (x3, y3), using three * control points */ p.curveto(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 */ p.stroke(); /* Output some descriptive black text */ p.fit_textline("curveto() and stroke()", xt, y, "fillcolor={gray 0}"); /* --------------- * Stroke a circle * --------------- */ /* Draw a circle at position (x, y) with a radius of 40 */ p.circle(x, y-=dy, 40); /* Stroke the path using the current line width and stroke color, and * clear it */ p.stroke(); /* Output some descriptive black text */ p.fit_textline("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 */ p.arc(x, y-=dy+20, 40, 90, 180); /* Stroke the path using the current line width and stroke color, and * clear it */ p.stroke(); /* Output some descriptive black text */ p.fit_textline("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 */ p.rect(x, y-=dy, 200, 50); /* Stroke the path using the current line width and stroke color, and * clear it */ p.stroke(); /* Output some descriptive black text */ p.fit_textline("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 */ p.rect(x, y-=dy, 200, 50); /* Fill the path using current fill color, and clear it */ p.fill(); /* Output some descriptive black text */ p.fit_textline("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 */ p.rect(x, y-=dy, 200, 50); /* Fill and stroke the path using the current line width, fill color, * and stroke color, and clear it */ p.fill_stroke(); /* Output some descriptive black text */ p.fit_textline("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 */ p.moveto(x-40, y-=dy); /* Draw a line from the current point to the supplied point */ p.lineto(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 */ p.arc(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 */ p.closepath_fill_stroke(); /* Output some descriptive black text */ p.fit_textline("lineto(), arc(), and", xt, y+20, "fillcolor={gray 0}"); p.fit_textline("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 */ p.save(); /* Draw a rectangle at position (x, y) with a width of 200 and a height * of 50 */ p.rect(x, y-=dy, 200, 50); /* Use the current path as the clipping path for subsequent operations */ p.clip(); /* Draw a circle at position (x, y) with a radius of 100 */ p.circle(x, y, 80); /* Fill the path with the current fill color and clear it */ p.fill(); /* Restore the graphics state which has been saved above */ p.restore(); /* Output some descriptive black text */ p.fit_textline("rect(), clip(),", xt, y+20, "fillcolor={gray 0}"); p.fit_textline("circle(), and fill()", xt, y, "fillcolor={gray 0}"); p.end_page_ext(""); p.end_document(""); } catch (PDFlibException e) { System.err.print("PDFlib exception occurred:\n"); System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() + ": " + e.get_errmsg() + "\n"); } catch (Exception e) { System.err.println(e.getMessage()); } finally { if (p != null) { p.delete(); } } } }