Class: EasyJump

Inherits:
Object
  • Object
show all
Defined in:
lib/vimamsa/easy_jump.rb

Overview

Similar feature as Vim EasyMotion github.com/easymotion/vim-easymotion

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ EasyJump

Returns a new instance of EasyJump.



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# File 'lib/vimamsa/easy_jump.rb', line 11

def initialize()
  visible_range = get_visible_area()
  visible_text = buf[visible_range[0]..visible_range[1]]
  wsmarks = scan_word_start_marks(visible_text)
  line_starts = scan_indexes(visible_text, /^/)
  lsh = Hash[line_starts.collect { |x| [x, true] }]
  wsmh = Hash[wsmarks.collect { |x| [x, true] }]

  # Exclude work starts that are too close to start of line
  wsmarks.select! { |x|
    r = true
    r = false if lsh[x] or lsh[x - 1] or lsh[x - 2]
    r
  }
  
  wsmarks = [0] if wsmarks.empty?

  # Exclude those word start positions that are too close to each other
  wsmarks.sort!
  wsm2 = [wsmarks[0]]
  for i in 1..(wsmarks.size - 1)
    if (wsmarks[i] - wsm2[-1]) >= 4 or visible_text[wsm2[-1]..wsmarks[i]].include?("\n")
      wsm2 << wsmarks[i]
    end
  end
  wsmarks = wsm2


  linestart_buf = (line_starts).collect { |x| x + visible_range[0] }
  wsmarks_buf = (wsmarks).collect { |x| x + visible_range[0] }

  # All line starts should be accessible with just two key presses, so put them first in order
  # Other word start positions ordered by distance from current pos
  wsmarks_buf.sort_by! { |x| (x - buf.pos).abs }
  @easy_jump_wsmarks = linestart_buf + wsmarks_buf

  @jump_sequence = make_jump_sequence(@easy_jump_wsmarks.size)

  vma.kbd.set_keyhandling_override(self.method(:easy_jump_input_char))
  @easy_jump_input = ""
  easy_jump_draw
end

Class Method Details

.start ⇒ Object

def self.initialize() make_jump_sequence end



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# File 'lib/vimamsa/easy_jump.rb', line 7

def self.start()
  @@cur = EasyJump.new
end

Instance Method Details

#easy_jump_draw ⇒ Object 



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# File 'lib/vimamsa/easy_jump.rb', line 80

def easy_jump_draw()
  vma.gui.start_overlay_draw
  for i in 0..(@easy_jump_wsmarks.size - 1)
    vma.gui.overlay_draw_text(@jump_sequence[i], @easy_jump_wsmarks[i])
  end
  vma.gui.end_overlay_draw
end

#easy_jump_input_char(c, event_type) ⇒ Object 



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# File 'lib/vimamsa/easy_jump.rb', line 54

def easy_jump_input_char(c, event_type)
  return true if event_type != :key_press
  # vma.paint_stack = []
  debug "EASY JUMP: easy_jump_input_char [#{c}]"
  @easy_jump_input << c.upcase
  if @jump_sequence.include?(@easy_jump_input)
    jshash = Hash[@jump_sequence.map.with_index.to_a]
    nthword = jshash[@easy_jump_input]
    newpos = @easy_jump_wsmarks[nthword]
    if !newpos.nil?
      debug "nthword:#{nthword} #{[@easy_jump_wsmarks[nthword], @jump_sequence[nthword]]}"
      buf.set_pos(@easy_jump_wsmarks[nthword])
    end
    vma.kbd.remove_keyhandling_override
    @jump_sequence = []
    vma.gui.clear_overlay()
  end
  if @easy_jump_input.size > 2
    # @kbd.set_mode(:command)
    vma.kbd.remove_keyhandling_override
    @jump_sequence = []
    vma.gui.clear_overlay
  end
  return true
end

#make_jump_sequence(num_items) ⇒ Object 



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# File 'lib/vimamsa/easy_jump.rb', line 88

def make_jump_sequence(num_items)
  left_hand = "asdfvgbqwertzxc123".upcase.split("")
  right_hand = "jklhnnmyuiop890".upcase.split("")

  sequence = []
  left_hand_fast = "asdf".upcase.split("")
  right_hand_fast = "jkl;".upcase.split("")

  left_hand_slow = "wergc".upcase.split("") # v
  right_hand_slow = "uiophnm,".upcase.split("")

  left_hand_slow2 = "tzx23".upcase.split("")
  right_hand_slow2 = "yb9'".upcase.split("")

  # Rmoved characters that can be mixed: O0Q, 8B, I1, VY

  left_fast_slow = Array.new(left_hand_fast).concat(left_hand_slow)
  right_fast_slow = Array.new(right_hand_fast).concat(right_hand_slow)

  left_hand_all = Array.new(left_hand_fast).concat(left_hand_slow).concat(left_hand_slow2)
  right_hand_all = Array.new(right_hand_fast).concat(right_hand_slow).concat(right_hand_slow2)

  left_hand_fast.each { |x|
    left_hand_fast.each { |y|
      sequence << "#{x}#{y}"
    }
  }

  right_hand_fast.each { |x|
    right_hand_fast.each { |y|
      sequence << "#{x}#{y}"
    }
  }

  right_hand_fast.each { |x|
    left_hand_fast.each { |y|
      sequence << "#{x}#{y}"
    }
  }

  left_hand_fast.each { |x|
    right_hand_fast.each { |y|
      sequence << "#{x}#{y}"
    }
  }

  left_hand_slow.each { |x|
    right_fast_slow.each { |y|
      sequence << "#{x}#{y}"
    }
  }

  right_hand_slow.each { |x|
    left_fast_slow.each { |y|
      sequence << "#{x}#{y}"
    }
  }

  left_hand_slow2.each { |x|
    right_hand_all.each { |y|
      left_hand_all.each { |z|
        sequence << "#{x}#{y}#{z}"
      }
    }
  }

  right_hand_slow2.each { |x|
    left_hand_all.each { |y|
      right_hand_all.each { |z|
        sequence << "#{x}#{y}#{z}"
      }
    }
  }

  return sequence
end