Class: Prawn::Core::Text::Formatted::Arranger
- Inherits:
-
Object
- Object
- Prawn::Core::Text::Formatted::Arranger
- Defined in:
- lib/prawn/core/text/formatted/arranger.rb
Overview
:nodoc:
Instance Attribute Summary collapse
-
#consumed ⇒ Object
Returns the value of attribute consumed.
-
#current_format_state ⇒ Object
readonly
Returns the value of attribute current_format_state.
-
#fragments ⇒ Object
readonly
Returns the value of attribute fragments.
-
#max_ascender ⇒ Object
readonly
Returns the value of attribute max_ascender.
-
#max_descender ⇒ Object
readonly
Returns the value of attribute max_descender.
-
#max_line_height ⇒ Object
readonly
Returns the value of attribute max_line_height.
-
#unconsumed ⇒ Object
readonly
The following present only for testing purposes.
Instance Method Summary collapse
- #apply_color_and_font_settings(fragment, &block) ⇒ Object
- #apply_font_settings(fragment = nil, &block) ⇒ Object
- #finalize_line ⇒ Object
- #finished? ⇒ Boolean
- #font_style(styles) ⇒ Object
- #format_array=(array) ⇒ Object
-
#initialize(document, options = {}) ⇒ Arranger
constructor
A new instance of Arranger.
- #initialize_line ⇒ Object
- #line ⇒ Object
- #line_width ⇒ Object
- #next_string ⇒ Object
- #preview_next_string ⇒ Object
- #repack_unretrieved ⇒ Object
- #retrieve_fragment ⇒ Object
- #space_count ⇒ Object
- #update_last_string(printed, unprinted, normalized_soft_hyphen = nil) ⇒ Object
Constructor Details
#initialize(document, options = {}) ⇒ Arranger
Returns a new instance of Arranger.
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 26 def initialize(document, ={}) @document = document @fragments = [] @unconsumed = [] @kerning = [:kerning] end |
Instance Attribute Details
#consumed ⇒ Object
Returns the value of attribute consumed.
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 19 def consumed @consumed end |
#current_format_state ⇒ Object (readonly)
Returns the value of attribute current_format_state.
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 24 def current_format_state @current_format_state end |
#fragments ⇒ Object (readonly)
Returns the value of attribute fragments.
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 23 def fragments @fragments end |
#max_ascender ⇒ Object (readonly)
Returns the value of attribute max_ascender.
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 18 def max_ascender @max_ascender end |
#max_descender ⇒ Object (readonly)
Returns the value of attribute max_descender.
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 17 def max_descender @max_descender end |
#max_line_height ⇒ Object (readonly)
Returns the value of attribute max_line_height.
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 16 def max_line_height @max_line_height end |
#unconsumed ⇒ Object (readonly)
The following present only for testing purposes
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 22 def unconsumed @unconsumed end |
Instance Method Details
#apply_color_and_font_settings(fragment, &block) ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 127 def apply_color_and_font_settings(fragment, &block) if fragment.color original_fill_color = @document.fill_color original_stroke_color = @document.stroke_color @document.fill_color(*fragment.color) @document.stroke_color(*fragment.color) apply_font_settings(fragment, &block) @document.stroke_color = original_stroke_color @document.fill_color = original_fill_color else apply_font_settings(fragment, &block) end end |
#apply_font_settings(fragment = nil, &block) ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 141 def apply_font_settings(fragment=nil, &block) if fragment.nil? font = current_format_state[:font] size = current_format_state[:size] character_spacing = current_format_state[:character_spacing] || @document.character_spacing styles = current_format_state[:styles] font_style = font_style(styles) else font = fragment.font size = fragment.size character_spacing = fragment.character_spacing styles = fragment.styles font_style = font_style(styles) end @document.character_spacing(character_spacing) do if font || font_style != :normal raise "Bad font family" unless @document.font.family @document.font(font || @document.font.family, :style => font_style) do apply_font_size(size, styles, &block) end else apply_font_size(size, styles, &block) end end end |
#finalize_line ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 64 def finalize_line @unfinalized_line = false omit_trailing_whitespace_from_line_width @fragments = [] @consumed.each do |hash| text = hash[:text] format_state = hash.dup format_state.delete(:text) fragment = Prawn::Text::Formatted::Fragment.new(text, format_state, @document) @fragments << fragment set_fragment_measurements(fragment) set_line_measurement_maximums(fragment) end end |
#finished? ⇒ Boolean
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 101 def finished? @unconsumed.length == 0 end |
#font_style(styles) ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 203 def font_style(styles) if styles.nil? :normal elsif styles.include?(:bold) && styles.include?(:italic) :bold_italic elsif styles.include?(:bold) :bold elsif styles.include?(:italic) :italic else :normal end end |
#format_array=(array) ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 81 def format_array=(array) initialize_line @unconsumed = [] array.each do |hash| hash[:text].scan(/[^\n]+|\n/) do |line| @unconsumed << hash.merge(:text => line) end end end |
#initialize_line ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 91 def initialize_line @unfinalized_line = true @max_line_height = 0 @max_descender = 0 @max_ascender = 0 @consumed = [] @fragments = [] end |
#line ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 51 def line if @unfinalized_line raise "Lines must be finalized before calling #line" end @fragments.collect do |fragment| if ruby_18 { true } fragment.text else fragment.text.dup.force_encoding("utf-8") end end.join end |
#line_width ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 42 def line_width if @unfinalized_line raise "Lines must be finalized before calling #line_width" end @fragments.inject(0) do |sum, fragment| sum + fragment.width end end |
#next_string ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 105 def next_string unless @unfinalized_line raise "Lines must not be finalized when calling #next_string" end hash = @unconsumed.shift if hash.nil? nil else @consumed << hash.dup @current_format_state = hash.dup @current_format_state.delete(:text) hash[:text] end end |
#preview_next_string ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 120 def preview_next_string hash = @unconsumed.first if hash.nil? then nil else hash[:text] end end |
#repack_unretrieved ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 194 def repack_unretrieved new_unconsumed = [] while fragment = retrieve_fragment fragment.include_trailing_white_space! new_unconsumed << fragment.format_state.merge(:text => fragment.text) end @unconsumed = new_unconsumed.concat(@unconsumed) end |
#retrieve_fragment ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 187 def retrieve_fragment if @unfinalized_line raise "Lines must be finalized before fragments can be retrieved" end @fragments.shift end |
#space_count ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 33 def space_count if @unfinalized_line raise "Lines must be finalized before calling #space_count" end @fragments.inject(0) do |sum, fragment| sum + fragment.space_count end end |
#update_last_string(printed, unprinted, normalized_soft_hyphen = nil) ⇒ Object
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# File 'lib/prawn/core/text/formatted/arranger.rb', line 169 def update_last_string(printed, unprinted, normalized_soft_hyphen=nil) return if printed.nil? if printed.empty? @consumed.pop else @consumed.last[:text] = printed if normalized_soft_hyphen @consumed.last[:normalized_soft_hyphen] = normalized_soft_hyphen end end unless unprinted.empty? @unconsumed.unshift(@current_format_state.merge(:text => unprinted)) end load_previous_format_state if printed.empty? end |