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# encoding: utf-8
require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper")
describe "A document's grid" do
before do
@pdf = Prawn::Document.new
end
it "should allow definition of a grid" do
@pdf.define_grid(:columns => 5, :rows => 8, :gutter => 0.1)
@pdf.grid.columns.should == 5
@pdf.grid.rows.should == 8
@pdf.grid.gutter.should == 0.1
end
describe "when a grid is defined" do
before do
@num_columns = 5
@num_rows = 8
@gutter = 10.0
@pdf.define_grid(
:columns => @num_columns,
:rows => @num_rows,
:gutter => @gutter
)
end
it "should compute the column width" do
(@pdf.grid.column_width * @num_columns.to_f +
@gutter * (@num_columns - 1).to_f).should == @pdf.bounds.width
end
it "should compute the row height" do
(@pdf.grid.row_height * @num_rows.to_f +
@gutter * (@num_rows - 1).to_f).should == @pdf.bounds.height
end
it "should give the edges of a grid box" do
grid_width = (@pdf.bounds.width.to_f -
(@gutter * (@num_columns - 1).to_f )) / @num_columns.to_f
grid_height = (@pdf.bounds.height.to_f -
(@gutter * (@num_rows - 1).to_f ))/ @num_rows.to_f
exp_tl_x = (grid_width + @gutter.to_f) * 4.0
exp_tl_y = @pdf.bounds.height.to_f - (grid_height + @gutter.to_f)
@pdf.grid(1,4).top_left.should == [exp_tl_x, exp_tl_y]
@pdf.grid(1,4).top_right.should == [exp_tl_x + grid_width, exp_tl_y]
@pdf.grid(1,4).bottom_left.should == [exp_tl_x, exp_tl_y - grid_height]
@pdf.grid(1,4).bottom_right.should == [exp_tl_x + grid_width, exp_tl_y - grid_height]
end
it "should give the edges of a multiple grid boxes" do
# Hand verified. Cheating a bit. Don't tell.
@pdf.grid([1,3], [2,5]).top_left.should == [330.0, 628.75]
@pdf.grid([1,3], [2,5]).top_right.should == [650.0, 628.75]
@pdf.grid([1,3], [2,5]).bottom_left.should == [330.0, 456.25]
@pdf.grid([1,3], [2,5]).bottom_right.should == [650.0, 456.25]
end
it "should draw outlines without changing global default colors to grid color" do
@pdf.grid.show_all('cccccc')
colors = PDF::Inspector::Graphics::Color.analyze(@pdf.render)
colors.fill_color.should.not == [0.8,0.8,0.8]
colors.stroke_color.should.not == [0.8,0.8,0.8]
# Hardcoded default color as I haven't been able to come up with a stable converter
# between fill_color without lots code.
#colors.fill_color.should == [0.0,0.0,0.0]
colors.stroke_color.should == [0.0,0.0,0.0]
end
it "should draw outlines without curent color settings" do
@pdf.fill_color "ccff00"
@pdf.stroke_color "ffcc00"
@pdf.grid.show_all
colors = PDF::Inspector::Graphics::Color.analyze(@pdf.render)
colors.fill_color.should == [0.8,1.0,0.0]
colors.stroke_color.should == [1.0,0.8,0.0]
end
end
end
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