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demo.rb
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# # << Haru Free PDF Library 2.0.0 >> -- demo.rb # # Copyright (c) 1999-2006 Takeshi Kanno <takeshi_kanno@est.hi-ho.ne.jp> # # Permission to use, copy, modify, distribute and sell this software # and its documentation for any purpose is hereby granted without fee, # provided that the above copyright notice appear in all copies and # that both that copyright notice and this permission notice appear # in supporting documentation. # It is provided "as is" without express or implied warranty. # require "hpdf" if ARGV.empty? line = 'Ruby Rocks' else line = ARGV.join(" ") end pdf = HPDFDoc.new page = pdf.add_page x = 578 r1 = 25 40.step(1, -3) do |xw| tone = 1.0 - (xw / 40.0) * 0.2 page.set_line_width(xw.to_f) page.set_rgb_stroke(tone, 1.0, tone) page.circle(50.0, 750.0, r1.to_f) page.stroke r1 += xw end 40.step(1, -3) do |xw| tone = 1.0 - (xw / 40.0) * 0.2 page.set_line_width(xw.to_f) page.set_rgb_stroke(tone, tone, 1.0) page.move_to(x.to_f, 0.0) page.line_to(x.to_f, 842.0) page.stroke x = (x - xw - 2) end page.set_rgb_stroke(0.0, 0.0, 0.0) page.set_line_width(1.0) page.rectangle(20.0, 20.0, 558.0, 802.0) page.stroke font = pdf.get_font("Helvetica", nil) bbox = font.get_bbox y = 800 50.step(5, -5) do |size| height = (bbox[3] - bbox[1]) / 1000 * size y = y - height page.begin_text page.set_font_and_size(font, size.to_f) page.text_out(30.0, y.to_f, line) page.end_text end (0...360).step(20) do |angle| page.set_rgb_fill(rand, rand, rand) page.begin_text rad = angle / 180.0 * 3.141592 page.set_font_and_size(font, 20.0) page.set_text_matrix(Math.cos(rad), Math.sin(rad), -Math.sin(rad), Math.cos(rad), 300 + Math.cos(rad) * 40, 300 + Math.sin(rad) * 40) page.show_text(line) page.end_text end pdf.save_to_file("demo.pdf")