class SVGGraph
Public Class Methods
new(e_list, metrics, symmetrize, color, leafstyle, multibyte, fontstyle, font_size)
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Calls superclass method
Graph::new
# File lib/rsyntaxtree/svg_graph.rb, line 21 def initialize(e_list, metrics, symmetrize, color, leafstyle, multibyte, fontstyle, font_size) # Store class-specific parameters @font = fontstyle == "sans" ? "sans-serif" : fontstyle @font_size = font_size super(e_list, metrics, symmetrize, color, leafstyle, multibyte, @font, @font_size) @line_styles = "<line style='stroke:black; stroke-width:1;' x1='X1' y1='Y1' x2='X2' y2='Y2' />\n" @polygon_styles = "<polygon style='fill: none; stroke: black; stroke-width:1;' points='X1 Y1 X2 Y2 X3 Y3' />\n" @text_styles = "<text style='fill: COLOR; font-size: FONT_SIZEpx; ST; WA;' x='X_VALUE' y='Y_VALUE' TD font-family='#{@font}'>CONTENT</text>\n" @tree_data = String.new end
Public Instance Methods
create_tempf(basename, ext, num = 10)
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Create a temporary file and returns only its filename
# File lib/rsyntaxtree/svg_graph.rb, line 49 def create_tempf(basename, ext, num = 10) flags = File::RDWR | File::CREAT | File::EXCL tfname = "" num.times do |i| begin tfname = "#{basename}.#{$$}.#{i}.#{ext}" tfile = File.open(tfname, flags, 0600) rescue Errno::EEXIST next end tfile.close return tfname end end
draw_element(x, y, w, string, type)
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Add the element into the tree (draw it)
# File lib/rsyntaxtree/svg_graph.rb, line 67 def draw_element(x, y, w, string, type) string = string.sub(/\^\z/){""} # Calculate element dimensions and position if (type == ETYPE_LEAF) and @leafstyle == "nothing" top = row2px(y - 1) + (@font_size * 1.5) else top = row2px(y) end left = x + @m[:b_side] bottom = top + @e_height right = left + w # Split the string into the main part and the # subscript part of the element (if any) parts = string.split("_", 2) if(parts.length > 1 ) main = parts[0].strip sub = parts[1].gsub(/_/, " ").strip else main = parts[0].strip sub = "" end if /\A\+(.+)\+\z/ =~ main main = $1 main_decoration= "overline" elsif /\A\-(.+)\-\z/ =~ main main = $1 main_decoration= "underline" elsif /\A\=(.+)\=\z/ =~ main main = $1 main_decoration= "line-through" else main_decoration= "" end if /\A\*\*\*(.+)\*\*\*\z/ =~ main main = $1 main_style = "font-style: italic" main_weight = "font-weight: bold" elsif /\A\*\*(.+)\*\*\z/ =~ main main = $1 main_style = "" main_weight = "font-weight: bold" elsif /\A\*(.+)\*\z/ =~ main main = $1 main_style = "font-style: italic" main_weight = "" else main_style = "" main_weight = "" end # Calculate text size for the main and the # subscript part of the element # symbols for underline/overline removed temporarily main_width = img_get_txt_width(main, @font, @font_size) if sub != "" if /\A\+(.+)\+\z/ =~ sub sub = $1 sub_decoration= "overline" elsif /\A\-(.+)\-\z/ =~ sub sub = $1 sub_decoration= "underline" elsif /\A\=(.+)\=\z/ =~ sub sub = $1 sub_decoration= "line-through" else sub_decoration= "" end if /\A\*\*\*(.+)\*\*\*\z/ =~ sub sub = $1 sub_style = "font-style: italic" sub_weight = "font-weight: bold" elsif /\A\*\*(.+)\*\*\z/ =~ sub sub = $1 sub_style = "" sub_weight = "font-weight: bold" elsif /\A\*(.+)\*\z/ =~ sub sub = $1 sub_style = "font-style: italic" sub_weight = "" else sub_style = "" sub_weight = "" end sub_width = img_get_txt_width(sub.to_s, @font, @sub_size) else sub_width = 0 end # Center text in the element txt_width = main_width + sub_width txt_pos = left + (right - left) / 2 - txt_width / 2 # Select apropriate color if(type == ETYPE_LEAF) col = @col_leaf else col = @col_node end if(main[0].chr == "<" && main[-1].chr == ">") col = @col_trace end # Draw main text main_data = @text_styles.sub(/COLOR/, col) main_data = main_data.sub(/FONT_SIZE/, @font_size.to_s) main_x = txt_pos main_y = top + @e_height - @m[:e_padd] * 1.5 main_data = main_data.sub(/X_VALUE/, main_x.to_s) main_data = main_data.sub(/Y_VALUE/, main_y.to_s) @tree_data += main_data.sub(/TD/, "text-decoration='#{main_decoration}'") .sub(/ST/, main_style) .sub(/WA/, main_weight) .sub(/CONTENT/, main) # Draw subscript text sub_data = @text_styles.sub(/COLOR/, col) sub_data = sub_data.sub(/FONT_SIZE/, @sub_size.to_s) sub_x = main_x + main_width sub_y = top + (@e_height - @m[:e_padd] + @sub_size / 10) if (sub.length > 0 ) sub_data = sub_data.sub(/X_VALUE/, sub_x.ceil.to_s) sub_data = sub_data.sub(/Y_VALUE/, sub_y.ceil.to_s) @tree_data += sub_data.sub(/TD/, "text-decoration='#{sub_decoration}'") .sub(/ST/, sub_style) .sub(/WA/, sub_weight) .sub(/CONTENT/, sub) end end
fix_child_size(id, current, target)
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If a node element text is wider than the sum of it's
child elements, then the child elements need to be resized to even out the space. This function recurses down the a child tree and sizes the children appropriately.
# File lib/rsyntaxtree/svg_graph.rb, line 256 def fix_child_size(id, current, target) children = @e_list.get_children(id) @e_list.set_element_width(id, target) if(children.length > 0 ) delta = target - current target_delta = delta / children.length children.each do |child| child_width = @e_list.get_element_width(child) fix_child_size(child, child_width, child_width + target_delta) end end end
img_get_txt_width(text, font, font_size, multiline = false)
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# File lib/rsyntaxtree/svg_graph.rb, line 271 def img_get_txt_width(text, font, font_size, multiline = false) parts = text.split("_", 2) main_before = parts[0].strip sub = parts[1] main = get_txt_only(main_before) if(main.contains_cjk?) main = 'n' * main.strip.size * 2 else main end main_metrics = img_get_txt_metrics(main, font, font_size, multiline) width = main_metrics.width if sub if(sub.contains_cjk?) sub = 'n' * sub.strip.size * 2 else sub end sub_metrics = img_get_txt_metrics(sub, font, font_size * SUBSCRIPT_CONST, multiline) width += sub_metrics.width end return width end
line_to_parent(fromX, fromY, fromW, toX, toW)
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Draw a line between child/parent elements
# File lib/rsyntaxtree/svg_graph.rb, line 205 def line_to_parent(fromX, fromY, fromW, toX, toW) if (fromY == 0 ) return end fromTop = row2px(fromY) fromLeft = (fromX + fromW / 2 + @m[:b_side]) toBot = (row2px(fromY - 1 ) + @e_height) toLeft = (toX + toW / 2 + @m[:b_side]) line_data = @line_styles.sub(/X1/, fromLeft.ceil.to_s) line_data = line_data.sub(/Y1/, fromTop.ceil.to_s) line_data = line_data.sub(/X2/, toLeft.ceil.to_s) @tree_data += line_data.sub(/Y2/, toBot.ceil.to_s) end
svg_data()
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# File lib/rsyntaxtree/svg_graph.rb, line 35 def svg_data parse_list header =<<EOD <?xml version="1.0" standalone="no"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg width="#{@width}" height="#{@height}" version="1.1" xmlns="http://www.w3.org/2000/svg"> EOD footer = "</svg>" header + @tree_data + footer end
triangle_to_parent(fromX, fromY, fromW, textW, symmetrize = true)
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Draw a triangle between child/parent elements
# File lib/rsyntaxtree/svg_graph.rb, line 224 def triangle_to_parent(fromX, fromY, fromW, textW, symmetrize = true) if (fromY == 0) return end toX = fromX fromCenter = (fromX + fromW / 2 + @m[:b_side]) fromTop = row2px(fromY).ceil fromLeft1 = (fromCenter + textW / 2).ceil fromLeft2 = (fromCenter - textW / 2).ceil toBot = (row2px(fromY - 1) + @e_height) if symmetrize toLeft = (toX + textW / 2 + @m[:b_side]) else toLeft = (toX + textW / 2 + @m[:b_side] * 3) end polygon_data = @polygon_styles.sub(/X1/, fromLeft1.ceil.to_s) polygon_data = polygon_data.sub(/Y1/, fromTop.ceil.to_s) polygon_data = polygon_data.sub(/X2/, fromLeft2.ceil.to_s) polygon_data = polygon_data.sub(/Y2/, fromTop.ceil.to_s) polygon_data = polygon_data.sub(/X3/, toLeft.ceil.to_s) @tree_data += polygon_data.sub(/Y3/, toBot.ceil.to_s) end