sandal / prawn

Fast, Nimble PDF Writer for Ruby

This URL has Read+Write access

prawn / examples / bounding_box / bounding_boxes.rb
raw normal view history
3454efc9 » sandal 2008-12-15 Major modifications to exam... 1 # encoding: utf-8
2 #
3 # This example demonstrates the basic functionality of Prawn's bounding boxes.
4 # Note that top level bounding boxes are positioned relative to the margin_box.
5 #
3f99ef7f » sandal 2009-07-19 Change text :spacing to :le... 6 require "#{File.dirname(__FILE__)}/../example_helper.rb"
3454efc9 » sandal 2008-12-15 Major modifications to exam... 7
8 Prawn::Document.generate("bounding_boxes.pdf") do
9
10 # Generates a box with a top-left of [100,600] and a top-right of [300,600]
11 # The box automatically expands as the cursor moves down the page. Notice
12 # that the final coordinates are outlined by a top and bottom line drawn
13 # relatively using calculations from +bounds+.
14 #
15 bounding_box [100,600], :width => 200 do
16 move_down 10
17 text "The rain in spain falls mainly on the plains " * 5
18 move_down 20
19 stroke do
20 line bounds.top_left, bounds.top_right
21 line bounds.bottom_left, bounds.bottom_right
22 end
23 end
24
25 # Generates a bounding box from [100, cursor], [300, cursor - 200],
26 # where cursor is the current y position.
27 #
28 bounding_box [100,cursor], :width => 200, :height => 200 do
29 stroke do
30 circle_at [100,100], :radius => 100
31 line bounds.top_left, bounds.bottom_right
32 line bounds.top_right, bounds.bottom_left
33 end
34
35 # Generates a nested bonding box and strokes its boundaries. Note that
36 # this box is anchored relative to its parent bounding box, not the
37 # margin_box
38 bounding_box [50,150], :width => 100, :height => 100 do
39 stroke_bounds
40 end
41 end
42
43 end