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75 lines
2.0 KiB
75 lines
2.0 KiB
require 'cairo' |
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require_relative 'graphics/cairo_context_wrapper' |
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module Squib |
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# Back end graphics. Private. |
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class Card |
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# :nodoc: |
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# @api private |
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attr_reader :width, :height, :backend, :svgfile, :index |
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# :nodoc: |
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# @api private |
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attr_accessor :cairo_surface, :cairo_context |
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# :nodoc: |
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# @api private |
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def initialize(deck, width, height, index=-1) |
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@deck = deck |
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@width = width |
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@height = height |
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@backend = deck.backend |
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@index = index |
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@svgfile = "#{deck.dir}/#{deck.prefix}#{deck.count_format % index}.svg" |
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@cairo_surface = make_surface(@svgfile, @backend) |
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@cairo_context = Squib::Graphics::CairoContextWrapper.new(Cairo::Context.new(@cairo_surface)) |
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@cairo_context.antialias = deck.antialias |
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end |
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# :nodoc: |
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# @api private |
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def make_surface(svgfile, backend) |
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case backend.downcase.to_sym |
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when :memory |
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Cairo::ImageSurface.new(@width, @height) |
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when :svg |
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FileUtils.mkdir_p @deck.dir unless Dir.exists?(@deck.dir) |
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Cairo::SVGSurface.new(svgfile, @width, @height) |
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else |
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Squib.logger.fatal "Back end not recognized: '#{backend}'" |
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abort |
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end |
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end |
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# A save/restore wrapper for using Cairo |
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# :nodoc: |
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# @api private |
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def use_cairo(&block) |
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@cairo_context.save |
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@cairo_context.new_path # see bug 248 |
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block.yield(@cairo_context) |
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@cairo_context.restore |
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end |
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def finish! |
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begin |
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@cairo_surface.finish |
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rescue Cairo::SurfaceFinishedError |
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# do nothin - if it's already finished that's fine |
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end |
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end |
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######################## |
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### BACKEND GRAPHICS ### |
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######################## |
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require_relative 'graphics/background' |
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require_relative 'graphics/image' |
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require_relative 'graphics/save_doc' |
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require_relative 'graphics/save_images' |
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require_relative 'graphics/shapes' |
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require_relative 'graphics/showcase' |
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require_relative 'graphics/text' |
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end |
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end
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