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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)
expect(@pdf.grid.columns).to eq(5)
expect(@pdf.grid.rows).to eq(8)
expect(@pdf.grid.gutter).to eq(0.1)
end
it "should allow re-definition of a grid" do
@pdf.define_grid(:columns => 5, :rows => 8, :gutter => 0.1)
expect(@pdf.grid.columns).to eq(5)
expect(@pdf.grid.rows).to eq(8)
expect(@pdf.grid.gutter).to eq(0.1)
@pdf.define_grid(:columns => 3, :rows => 6, :gutter => 0.1)
expect(@pdf.grid.columns).to eq(3)
expect(@pdf.grid.rows).to eq(6)
expect(@pdf.grid.gutter).to eq(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
expect(@pdf.grid.column_width * @num_columns.to_f +
@gutter * (@num_columns - 1).to_f).to eq(@pdf.bounds.width)
end
it "should compute the row height" do
expect(@pdf.grid.row_height * @num_rows.to_f +
@gutter * (@num_rows - 1).to_f).to eq(@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)
expect(@pdf.grid(1, 4).top_left).to eq([exp_tl_x, exp_tl_y])
expect(@pdf.grid(1, 4).top_right).to eq([exp_tl_x + grid_width, exp_tl_y])
expect(@pdf.grid(1, 4).bottom_left).to eq([exp_tl_x, exp_tl_y - grid_height])
expect(@pdf.grid(1, 4).bottom_right).to eq([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.
expect(@pdf.grid([1, 3], [2, 5]).top_left).to eq([330.0, 628.75])
expect(@pdf.grid([1, 3], [2, 5]).top_right).to eq([650.0, 628.75])
expect(@pdf.grid([1, 3], [2, 5]).bottom_left).to eq([330.0, 456.25])
expect(@pdf.grid([1, 3], [2, 5]).bottom_right).to eq([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)
expect(colors.fill_color).not_to eq([0.8, 0.8, 0.8])
expect(colors.stroke_color).not_to eq([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.
expect(colors.stroke_color).to eq([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)
expect(colors.fill_color).to eq([0.8, 1.0, 0.0])
expect(colors.stroke_color).to eq([1.0, 0.8, 0.0])
end
end
end
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