Class: Textbringer::Window
- Inherits:
-
Object
- Object
- Textbringer::Window
- Defined in:
- lib/textbringer/window.rb
Direct Known Subclasses
Constant Summary collapse
- KEY_NAMES =
{}
- HAVE_GET_KEY_MODIFIERS =
defined?(Curses.get_key_modifiers)
- ALT_NUMBER_BASE =
Curses::ALT_0 - ?0.ord
- ALT_ALPHA_BASE =
Curses::ALT_A - ?a.ord
- @@started =
false
- @@list =
[]
- @@current =
nil
- @@echo_area =
nil
- @@has_colors =
false
Instance Attribute Summary collapse
-
#bottom_of_window ⇒ Object
readonly
Returns the value of attribute bottom_of_window.
-
#buffer ⇒ Object
Returns the value of attribute buffer.
-
#columns ⇒ Object
readonly
Returns the value of attribute columns.
-
#lines ⇒ Object
readonly
Returns the value of attribute lines.
-
#mode_line ⇒ Object
readonly
Returns the value of attribute mode_line.
-
#top_of_window ⇒ Object
readonly
Returns the value of attribute top_of_window.
-
#window ⇒ Object
readonly
Returns the value of attribute window.
-
#x ⇒ Object
readonly
Returns the value of attribute x.
-
#y ⇒ Object
readonly
Returns the value of attribute y.
Class Method Summary collapse
- .beep ⇒ Object
- .colors ⇒ Object
- .columns ⇒ Object
- .current ⇒ Object
- .current=(window) ⇒ Object
- .delete_other_windows ⇒ Object
- .delete_window(target = @@current) ⇒ Object
- .echo_area ⇒ Object
- .has_colors=(value) ⇒ Object
- .has_colors? ⇒ Boolean
- .lines ⇒ Object
- .list(include_echo_area: false) ⇒ Object
- .load_faces ⇒ Object
- .other_window ⇒ Object
- .redisplay ⇒ Object
- .redraw ⇒ Object
- .resize ⇒ Object
- .set_default_colors(fg, bg) ⇒ Object
- .start ⇒ Object
- .update ⇒ Object
Instance Method Summary collapse
- #active? ⇒ Boolean
- #close ⇒ Object
- #current? ⇒ Boolean
- #delete ⇒ Object
- #deleted? ⇒ Boolean
- #echo_area? ⇒ Boolean
- #enlarge(n) ⇒ Object
- #has_input? ⇒ Boolean
- #highlight ⇒ Object
-
#initialize(lines, columns, y, x) ⇒ Window
constructor
A new instance of Window.
- #move(y, x) ⇒ Object
- #read_event ⇒ Object
- #read_event_nonblock ⇒ Object
- #recenter ⇒ Object
- #recenter_if_needed ⇒ Object
- #redisplay ⇒ Object
- #redraw ⇒ Object
- #resize(lines, columns) ⇒ Object
- #restore_point ⇒ Object
- #save_point ⇒ Object
- #scroll_down ⇒ Object
- #scroll_up ⇒ Object
- #shrink(n) ⇒ Object
- #shrink_if_larger_than_buffer ⇒ Object
- #split(other_lines = nil) ⇒ Object
- #wait_input(msecs) ⇒ Object
Constructor Details
#initialize(lines, columns, y, x) ⇒ Window
Returns a new instance of Window.
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# File 'lib/textbringer/window.rb', line 220 def initialize(lines, columns, y, x) @lines = lines @columns = columns @y = y @x = x initialize_window(lines, columns, y, x) @window.keypad = true @window.scrollok(false) @window.idlok(true) @buffer = nil @top_of_window = nil @bottom_of_window = nil @point_mark = nil @deleted = false @raw_key_buffer = [] @key_buffer = [] end |
Instance Attribute Details
#bottom_of_window ⇒ Object (readonly)
Returns the value of attribute bottom_of_window.
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# File 'lib/textbringer/window.rb', line 218 def bottom_of_window @bottom_of_window end |
#buffer ⇒ Object
Returns the value of attribute buffer.
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# File 'lib/textbringer/window.rb', line 217 def buffer @buffer end |
#columns ⇒ Object (readonly)
Returns the value of attribute columns.
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# File 'lib/textbringer/window.rb', line 217 def columns @columns end |
#lines ⇒ Object (readonly)
Returns the value of attribute lines.
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# File 'lib/textbringer/window.rb', line 217 def lines @lines end |
#mode_line ⇒ Object (readonly)
Returns the value of attribute mode_line.
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# File 'lib/textbringer/window.rb', line 217 def mode_line @mode_line end |
#top_of_window ⇒ Object (readonly)
Returns the value of attribute top_of_window.
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# File 'lib/textbringer/window.rb', line 218 def top_of_window @top_of_window end |
#window ⇒ Object (readonly)
Returns the value of attribute window.
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# File 'lib/textbringer/window.rb', line 217 def window @window end |
#x ⇒ Object (readonly)
Returns the value of attribute x.
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# File 'lib/textbringer/window.rb', line 217 def x @x end |
#y ⇒ Object (readonly)
Returns the value of attribute y.
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# File 'lib/textbringer/window.rb', line 217 def y @y end |
Class Method Details
.beep ⇒ Object
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# File 'lib/textbringer/window.rb', line 213 def self.beep Curses.beep end |
.colors ⇒ Object
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# File 'lib/textbringer/window.rb', line 106 def self.colors Curses.colors end |
.columns ⇒ Object
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# File 'lib/textbringer/window.rb', line 186 def self.columns Curses.cols end |
.current ⇒ Object
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# File 'lib/textbringer/window.rb', line 32 def self.current @@current end |
.current=(window) ⇒ Object
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# File 'lib/textbringer/window.rb', line 36 def self.current=(window) if window.deleted? window = @@list.first end @@current.save_point if @@current && !@@current.deleted? @@current = window @@current.restore_point Buffer.current = window.buffer end |
.delete_other_windows ⇒ Object
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# File 'lib/textbringer/window.rb', line 69 def self.delete_other_windows if @@current.echo_area? raise EditorError, "Can't expand the echo area to full screen" end @@list.delete_if do |window| if window.current? || window.echo_area? false else window.delete true end end @@current.move(0, 0) @@current.resize(Window.lines - 1, @@current.columns) end |
.delete_window(target = @@current) ⇒ Object
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# File 'lib/textbringer/window.rb', line 46 def self.delete_window(target = @@current) if target.echo_area? raise EditorError, "Can't delete the echo area" end if @@list.size == 2 raise EditorError, "Can't delete the sole window" end i = @@list.index(target) return if i.nil? if i == 0 window = @@list[1] window.move(0, 0) else window = @@list[i - 1] end window.resize(target.lines + window.lines, window.columns) target.delete @@list.delete_at(i) if target == @@current self.current = window end end |
.echo_area ⇒ Object
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# File 'lib/textbringer/window.rb', line 94 def self.echo_area @@echo_area end |
.has_colors=(value) ⇒ Object
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# File 'lib/textbringer/window.rb', line 98 def self.has_colors=(value) @@has_colors = value end |
.has_colors? ⇒ Boolean
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# File 'lib/textbringer/window.rb', line 102 def self.has_colors? @@has_colors end |
.lines ⇒ Object
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# File 'lib/textbringer/window.rb', line 182 def self.lines Curses.lines end |
.list(include_echo_area: false) ⇒ Object
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# File 'lib/textbringer/window.rb', line 24 def self.list(include_echo_area: false) if include_echo_area @@list.dup else @@list.reject(&:echo_area?) end end |
.load_faces ⇒ Object
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# File 'lib/textbringer/window.rb', line 115 def self.load_faces require_relative "faces/basic" require_relative "faces/programming" end |
.other_window ⇒ Object
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# File 'lib/textbringer/window.rb', line 85 def self.other_window i = @@list.index(@@current) begin i += 1 window = @@list[i % @@list.size] end while !window.active? self.current = window end |
.redisplay ⇒ Object
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# File 'lib/textbringer/window.rb', line 160 def self.redisplay return if Controller.current.executing_keyboard_macro? return if Window.current.has_input? @@list.each do |window| window.redisplay unless window.current? end current.redisplay update end |
.redraw ⇒ Object
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# File 'lib/textbringer/window.rb', line 170 def self.redraw @@list.each do |window| window.redraw unless window.current? end current.redraw update end |
.resize ⇒ Object
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# File 'lib/textbringer/window.rb', line 190 def self.resize @@list.delete_if do |window| if !window.echo_area? && window.y > Window.lines - CONFIG[:window_min_height] window.delete true else false end end @@list.each_with_index do |window, i| unless window.echo_area? if i < @@list.size - 2 window.resize(window.lines, Window.columns) else window.resize(Window.lines - 1 - window.y, Window.columns) end end end @@echo_area.move(Window.lines - 1, 0) @@echo_area.resize(1, Window.columns) end |
.set_default_colors(fg, bg) ⇒ Object
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# File 'lib/textbringer/window.rb', line 110 def self.set_default_colors(fg, bg) Curses.assume_default_colors(Color[fg], Color[bg]) Window.redraw end |
.start ⇒ Object
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# File 'lib/textbringer/window.rb', line 120 def self.start if @@started raise EditorError, "Already started" end Curses.init_screen Curses.noecho Curses.raw Curses.nonl self.has_colors = Curses.has_colors? if has_colors? Curses.start_color Curses.use_default_colors load_faces end begin window = Textbringer::Window.new(Window.lines - 1, Window.columns, 0, 0) window.buffer = Buffer.new_buffer("*scratch*") @@list.push(window) Window.current = window @@echo_area = Textbringer::EchoArea.new(1, Window.columns, Window.lines - 1, 0) Buffer.minibuffer.keymap = MINIBUFFER_LOCAL_MAP @@echo_area.buffer = Buffer.minibuffer @@list.push(@@echo_area) @@started = true yield ensure @@list.each do |win| win.close end @@list.clear Curses.echo Curses.noraw Curses.nl Curses.close_screen @@started = false end end |
.update ⇒ Object
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# File 'lib/textbringer/window.rb', line 178 def self.update Curses.doupdate end |
Instance Method Details
#active? ⇒ Boolean
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# File 'lib/textbringer/window.rb', line 242 def active? true end |
#close ⇒ Object
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# File 'lib/textbringer/window.rb', line 261 def close @window.close end |
#current? ⇒ Boolean
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# File 'lib/textbringer/window.rb', line 291 def current? self == @@current end |
#delete ⇒ Object
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# File 'lib/textbringer/window.rb', line 250 def delete unless @deleted if current? Window.current = @@list.first end delete_marks @window.close @deleted = true end end |
#deleted? ⇒ Boolean
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# File 'lib/textbringer/window.rb', line 246 def deleted? @deleted end |
#echo_area? ⇒ Boolean
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# File 'lib/textbringer/window.rb', line 238 def echo_area? false end |
#enlarge(n) ⇒ Object
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# File 'lib/textbringer/window.rb', line 569 def enlarge(n) if n > 0 max_height = Window.lines - CONFIG[:window_min_height] * (@@list.size - 2) - 1 new_lines = [lines + n, max_height].min needed_lines = new_lines - lines resize(new_lines, columns) i = @@list.index(self) indices = (i + 1).upto(@@list.size - 2).to_a + (i - 1).downto(0).to_a indices.each do |j| break if needed_lines == 0 window = @@list[j] extended_lines = [ window.lines - CONFIG[:window_min_height], needed_lines ].min window.resize(window.lines - extended_lines, window.columns) needed_lines -= extended_lines end y = 0 @@list.each do |win| win.move(y, win.x) y += win.lines end elsif n < 0 && @@list.size > 2 new_lines = [lines + n, CONFIG[:window_min_height]].max diff = lines - new_lines resize(new_lines, columns) i = @@list.index(self) if i < @@list.size - 2 window = @@list[i + 1] window.move(window.y - diff, window.x) else window = @@list[i - 1] move(self.y + diff, self.x) end window.resize(window.lines + diff, window.columns) end end |
#has_input? ⇒ Boolean
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# File 'lib/textbringer/window.rb', line 338 def has_input? if !@raw_key_buffer.empty? || !@key_buffer.empty? return true end @window.nodelay = true begin c = @window.get_char if c @raw_key_buffer.push(c) end !c.nil? ensure @window.nodelay = false end end |
#highlight ⇒ Object
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# File 'lib/textbringer/window.rb', line 354 def highlight @highlight_on = {} @highlight_off = {} return if !@@has_colors || !CONFIG[:syntax_highlight] || @buffer.binary? syntax_table = @buffer.mode.syntax_table || DEFAULT_SYNTAX_TABLE if @buffer.bytesize < CONFIG[:highlight_buffer_size_limit] base_pos = @buffer.point_min s = @buffer.to_s else base_pos = @buffer.point len = columns * (lines - 1) / 2 * 3 s = @buffer.substring(@buffer.point, @buffer.point + len).scrub("") end return if !s.valid_encoding? re_str = syntax_table.map { |name, re| "(?<#{name}>#{re})" }.join("|") re = Regexp.new(re_str) names = syntax_table.keys s.scan(re) do b = base_pos + $`.bytesize e = b + $&.bytesize if b < @buffer.point && @buffer.point < e b = @buffer.point end name = names.find { |n| $~[n] } attributes = Face[name]&.attributes if attributes @highlight_on[b] = attributes @highlight_off[e] = attributes end end end |
#move(y, x) ⇒ Object
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# File 'lib/textbringer/window.rb', line 494 def move(y, x) @y = y @x = x @window.move(y, x) @mode_line.move(y + @window.maxy, x) end |
#read_event ⇒ Object
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# File 'lib/textbringer/window.rb', line 295 def read_event key = get_char if key.is_a?(Integer) if HAVE_GET_KEY_MODIFIERS if Curses::ALT_0 <= key && key <= Curses::ALT_9 @key_buffer.push((key - ALT_NUMBER_BASE).chr) return "\e" elsif Curses::ALT_A <= key && key <= Curses::ALT_Z @key_buffer.push((key - ALT_ALPHA_BASE).chr) return "\e" end end KEY_NAMES[key] || key else key&.encode(Encoding::UTF_8) end end |
#read_event_nonblock ⇒ Object
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# File 'lib/textbringer/window.rb', line 313 def read_event_nonblock @window.nodelay = true begin read_event ensure @window.nodelay = false end end |
#recenter ⇒ Object
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# File 'lib/textbringer/window.rb', line 509 def recenter @buffer.save_point do |saved| max = (lines - 1) / 2 count = beginning_of_line_and_count(max) while count < max break if @buffer.point == 0 @buffer.backward_char count += beginning_of_line_and_count(max - count - 1) + 1 end @buffer.mark_to_point(@top_of_window) end end |
#recenter_if_needed ⇒ Object
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# File 'lib/textbringer/window.rb', line 522 def recenter_if_needed if @buffer.point_before_mark?(@top_of_window) || @buffer.point_after_mark?(@bottom_of_window) recenter end end |
#redisplay ⇒ Object
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# File 'lib/textbringer/window.rb', line 388 def redisplay return if @buffer.nil? redisplay_mode_line @buffer.save_point do |saved| if current? point = saved else point = @point_mark @buffer.point_to_mark(@point_mark) end framer y = x = 0 @buffer.point_to_mark(@top_of_window) highlight @window.erase @window.setpos(0, 0) @window.attrset(0) if current? && @buffer.visible_mark && @buffer.point_after_mark?(@buffer.visible_mark) @window.attron(Curses::A_REVERSE) end while !@buffer.end_of_buffer? cury, curx = @window.cury, @window.curx if @buffer.point_at_mark?(point) y, x = cury, curx if current? && @buffer.visible_mark if @buffer.point_after_mark?(@buffer.visible_mark) @window.attroff(Curses::A_REVERSE) elsif @buffer.point_before_mark?(@buffer.visible_mark) @window.attron(Curses::A_REVERSE) end end end if current? && @buffer.visible_mark && @buffer.point_at_mark?(@buffer.visible_mark) if @buffer.point_after_mark?(point) @window.attroff(Curses::A_REVERSE) elsif @buffer.point_before_mark?(point) @window.attron(Curses::A_REVERSE) end end if attrs = @highlight_off[@buffer.point] @window.attroff(attrs) end if attrs = @highlight_on[@buffer.point] @window.attron(attrs) end c = @buffer.char_after if c == "\n" @window.clrtoeol break if cury == lines - 2 # lines include mode line @window.setpos(cury + 1, 0) @buffer.forward_char next elsif c == "\t" n = calc_tab_width(curx) c = " " * n else c = escape(c) end if curx < columns - 4 newx = nil else newx = curx + Buffer.display_width(c) if newx > columns if cury == lines - 2 break else @window.clrtoeol @window.setpos(cury + 1, 0) end end end if Buffer.display_width(c) == 0 # ncurses on macOS prints U+FEFF, U+FE0F etc. as space, # so ignore it else @window.addstr(c) end break if newx == columns && cury == lines - 2 @buffer.forward_char end if current? && @buffer.visible_mark @window.attroff(Curses::A_REVERSE) end @buffer.mark_to_point(@bottom_of_window) if @buffer.point_at_mark?(point) y, x = @window.cury, @window.curx end if x == columns - 1 c = @buffer.char_after(point.location) if c && Buffer.display_width(c) > 1 y += 1 x = 0 end end @window.setpos(y, x) @window.noutrefresh end end |
#redraw ⇒ Object
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# File 'lib/textbringer/window.rb', line 489 def redraw @window.redraw @mode_line.redraw end |
#resize(lines, columns) ⇒ Object
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# File 'lib/textbringer/window.rb', line 501 def resize(lines, columns) @lines = lines @columns = columns @window.resize(lines - 1, columns) @mode_line.move(@y + lines - 1, @x) @mode_line.resize(1, columns) end |
#restore_point ⇒ Object
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# File 'lib/textbringer/window.rb', line 287 def restore_point @buffer.point_to_mark(@point_mark) end |
#save_point ⇒ Object
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# File 'lib/textbringer/window.rb', line 279 def save_point @buffer[:top_of_window] ||= @buffer.new_mark @buffer[:top_of_window].location = @top_of_window.location @buffer[:bottom_of_window] ||= @buffer.new_mark @buffer[:bottom_of_window].location = @bottom_of_window.location @buffer.mark_to_point(@point_mark) end |
#scroll_down ⇒ Object
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# File 'lib/textbringer/window.rb', line 539 def scroll_down if @top_of_window.location == @buffer.point_min raise RangeError, "Beginning of buffer" end @buffer.point_to_mark(@top_of_window) @buffer.next_line @buffer.beginning_of_line @top_of_window.location = 0 end |
#scroll_up ⇒ Object
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# File 'lib/textbringer/window.rb', line 529 def scroll_up if @bottom_of_window.location == @buffer.point_max raise RangeError, "End of buffer" end @buffer.point_to_mark(@bottom_of_window) @buffer.previous_line @buffer.beginning_of_line @buffer.mark_to_point(@top_of_window) end |
#shrink(n) ⇒ Object
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# File 'lib/textbringer/window.rb', line 610 def shrink(n) enlarge(-n) end |
#shrink_if_larger_than_buffer ⇒ Object
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# File 'lib/textbringer/window.rb', line 614 def shrink_if_larger_than_buffer @buffer.save_point do @buffer.end_of_buffer @buffer.skip_re_backward(/\s/) count = beginning_of_line_and_count(Window.lines) + 1 while !@buffer.beginning_of_buffer? @buffer.backward_char count += beginning_of_line_and_count(Window.lines) + 1 end if lines - 1 > count shrink(lines - 1 - count) end end end |
#split(other_lines = nil) ⇒ Object
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# File 'lib/textbringer/window.rb', line 549 def split(other_lines = nil) old_lines = lines if other_lines if other_lines < CONFIG[:window_min_height] raise EditorError, "Window too small" end new_lines = lines - other_lines else new_lines = (old_lines / 2.0).ceil end if new_lines < CONFIG[:window_min_height] raise EditorError, "Window too small" end resize(new_lines, columns) new_window = Window.new(old_lines - new_lines, columns, y + new_lines, x) new_window.buffer = buffer i = @@list.index(self) @@list.insert(i + 1, new_window) end |
#wait_input(msecs) ⇒ Object
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# File 'lib/textbringer/window.rb', line 322 def wait_input(msecs) if !@raw_key_buffer.empty? || !@key_buffer.empty? return @raw_key_buffer.first || @key_buffer.first end @window.timeout = msecs begin c = @window.get_char if c @raw_key_buffer.push(c) end c ensure @window.timeout = -1 end end |