Class: Clogs::EditLine

Inherits:
Control show all
Includes:
Editable
Defined in:
lib/clogs/drawables/controls.rb

Constant Summary

Constants inherited from Control

Control::PADDING_X, Control::PADDING_Y

Instance Attribute Summary

Attributes included from Editable

#anchor, #caret

Attributes inherited from Control

#focused, #hovered, #pressed

Attributes inherited from Drawable

#abs_x, #abs_y, #children, #height, #parent, #shoes_linkable_id, #styles, #width, #x, #y

Instance Method Summary collapse

Methods included from Editable

#caret_line_offset, #delete_selection, #editable_init, #focus_gained, #focus_lost, #focusable?, #handle_char, #handle_ctrl, #insert, #line_end, #line_start, #move_caret, #multiline?, #on_key, #selection_range, #text_value, #text_value=

Methods inherited from Control

#clickable?, #label, #on_mouse_enter, #on_mouse_leave, #text_style

Methods inherited from Drawable

#add_child, #app, #clickable?, #contains?, #destroy_self, #each_peer, #focus_gained, #focus_lost, #focusable?, for_shoes_class, #hidden?, #margin, #needs_layout!, #notify, #on_key, #on_mouse_move, #on_release, #paint, #positioned?, #properties_changed, #redraw!, #remove_child, #requested_height, #requested_width, #set_parent, #style

Constructor Details

#initialize(properties) ⇒ EditLine

Returns a new instance of EditLine.



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# File 'lib/clogs/drawables/controls.rb', line 359

def initialize(properties)
  super
  editable_init
end

Instance Method Details

#displayed_text ⇒ Object 



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# File 'lib/clogs/drawables/controls.rb', line 364

def displayed_text
  style(:secret) ? "•" * text_value.length : text_value
end

#draw(painter, x, y) ⇒ Object 



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# File 'lib/clogs/drawables/controls.rb', line 375

def draw(painter, x, y)
  painter.draw(fill: [255, 255, 255, 255], stroke: focused ? [60, 140, 230, 255] : [160, 160, 160, 255],
    thickness: focused ? 2 : 1) do |p|
    Clogs.rounded_rect(p, x + 0.5, y + 0.5, @width - 1, @height - 1, 3)
  end

  st = text_style(color: Style.color(style(:stroke), [0, 0, 0, 255]))
  text = displayed_text
  inner_x = x + 6
  inner_y = y + (@height - @line_height) / 2.0

  painter.save do |p|
    p.clip_rect(x + 2, y + 2, @width - 4, @height - 4)
    if (range = selection_range)
      sx = Paragraph.measure(text[0...range[0]], st)[0]
      sw = Paragraph.measure(text[range[0]...range[1]], st)[0]
      p.fill_rect(inner_x + sx - @scroll_x, inner_y, sw, @line_height, [180, 210, 255, 255])
    end
    unless text.empty?
      block = TextBlock.new([Run.new(text: text, size: st.size, family: st.family, color: st.color)],
        -1, default_family: st.family, default_size: st.size)
      block.draw(p, inner_x - @scroll_x, inner_y)
      block.free
    end
    if focused
      cx = inner_x + Paragraph.measure(text[0...@caret], st)[0] - @scroll_x
      p.line(cx, inner_y, cx, inner_y + @line_height, [0, 0, 0, 255], thickness: 1)
    end
  end
end

#index_for_offset(text, offset, st) ⇒ Object

Walk the string until the measured prefix passes the click point.



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# File 'lib/clogs/drawables/controls.rb', line 416

def index_for_offset(text, offset, st)
  return 0 if offset <= 0

  (0..text.length).each do |i|
    return [i - 1, 0].max if Paragraph.measure(text[0...i], st)[0] > offset
  end
  text.length
end

#measure(available_width) ⇒ Object 



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# File 'lib/clogs/drawables/controls.rb', line 368

def measure(available_width)
  @width = requested_width(available_width) || [available_width, 200].min
  st = text_style
  @line_height = Paragraph.line_height(st)
  @height = requested_height(available_width) || (@line_height + PADDING_Y * 2).ceil
end

#on_click(x, y, _button) ⇒ Object 



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# File 'lib/clogs/drawables/controls.rb', line 406

def on_click(x, y, _button)
  st = text_style
  local = x - @abs_x - 6 + @scroll_x
  @caret = index_for_offset(displayed_text, local, st)
  @anchor = nil
  _ = y
  redraw!
end