### Home Classes Methods

### In Files

- lib/taskjuggler/reports/HTMLGraphics.rb

### Methods

- #arrowHeadToHTML
- #diamondToHTML
- #jagToHTML
- #lineToHTML
- #rectToHTML

### Files

- CHANGELOG
- COPYING
- README.rdoc

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No matching classes.

# TaskJuggler::HTMLGraphics

This module provides some functions to render simple graphical objects like filled rectangles and lines as HTML elements.

### Public Instance Methods

arrowHeadToHTML(x, y) click to toggle source

    # File lib/taskjuggler/reports/HTMLGraphics.rb, line 70
    def arrowHeadToHTML(x, y)
      XMLElement.new('div', 'class' => 'tj_arrow_head',
                            'style' => "left:#{x.to_i - 5}px; " +
                                       "top:#{y.to_i - 5}px;")
    end

diamondToHTML(x, y) click to toggle source

    # File lib/taskjuggler/reports/HTMLGraphics.rb, line 59
    def diamondToHTML(x, y)
      html = []
      html << XMLElement.new('div', 'class' => 'tj_diamond_top',
                             'style' => "left:#{x.to_i - 6}px; " +
                                        "top:#{y.to_i - 7}px;")
      html << XMLElement.new('div', 'class' => 'tj_diamond_bottom',
                             'style' => "left:#{x.to_i - 6}px; " +
                                        "top:#{y.to_i}px;")
      html
    end

jagToHTML(x, y) click to toggle source

    # File lib/taskjuggler/reports/HTMLGraphics.rb, line 53
    def jagToHTML(x, y)
      XMLElement.new('div', 'class' => 'tj_gantt_jag',
                            'style' => "left:#{x.to_i - 5}px; " +
                                       "top:#{y.to_i}px;")
    end

lineToHTML(xs, ys, xe, ye, category) click to toggle source

Render a line as HTML element. We use 'div's with a single pixel width or height for this purpose. As a consequence of this, we can only generate horizontal or vertical lines. Diagonal lines are not supported. xs and ys are the start coordinates, xe and ye are the end coordinates. category determines the color.

    # File lib/taskjuggler/reports/HTMLGraphics.rb, line 23
    def lineToHTML(xs, ys, xe, ye, category)
      xs = xs.to_i
      ys = ys.to_i
      xe = xe.to_i
      ye = ye.to_i
      if ys == ye
        # Horizontal line
        xs, xe = xe, xs if xe < xs
        style = "left:#{xs}px; top:#{ys}px; " +
                "width:#{xe - xs + 1}px; height:1px;"
      elsif xs == xe
        # Vertical line
        ys, ye = ye, ys if ye < ys
        style = "left:#{xs}px; top:#{ys}px; " +
                "width:1px; height:#{ye - ys + 1}px;"
      else
        raise "Can't draw diagonal line #{xs}/#{ys} to #{xe}/#{ye}!"
      end
      XMLElement.new('div', 'class' => category, 'style' => style)
    end

rectToHTML(x, y, w, h, category) click to toggle source

Draw a filled rectable at position x and y with the dimension w and h into another HTML element. The color is determined by the class category.

    # File lib/taskjuggler/reports/HTMLGraphics.rb, line 47
    def rectToHTML(x, y, w, h, category)
      style = "left:#{x.to_i}px; top:#{y.to_i}px; " +
              "width:#{w.to_i}px; height:#{h.to_i}px;"
      XMLElement.new('div', 'class' => category, 'style' => style)
    end

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