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# -*- coding: utf-8 -*-
require 'gtk3'
module Gdk
module TextSelector
START_TAG_PATTERN = /<\s*\w+.*?>/
END_TAG_PATTERN = %r{</.*?>}
ENTITY_ENCODED_PATTERN = /&(?:gt|lt|amp);/
CHARACTER_PATTERN = /./m
CHUNK_PATTERN = Regexp.union(START_TAG_PATTERN,
END_TAG_PATTERN,
ENTITY_ENCODED_PATTERN,
CHARACTER_PATTERN)
START_TAG_PATTERN_EXACT = /\A<\s*\w+.*?>\Z/
END_TAG_PATTERN_EXACT = %r{\A</.*?>\Z}
ENTITY_ENCODED_PATTERN_EXACT = /\A&(?:gt|lt|amp);\Z/
CHARACTER_PATTERN_EXACT = /\A.\Z/m
NON_TAG_PATTERN_EXACT = Regexp.union(ENTITY_ENCODED_PATTERN_EXACT,
CHARACTER_PATTERN_EXACT)
WHITE = [0xffff, 0xffff, 0xffff].freeze
BLACK = [0, 0, 0].freeze
def initialize(*args)
@textselector_pressing = @textselect_start = @textselect_end = nil
super end
def textselector_range
if(@textselect_start and @textselect_end and @textselect_start != @textselect_end)
first, last = [@textselect_start, @textselect_end].sort
Range.new(first, last, true) end end
def textselector_press(index, trail=0)
@textselector_pressing = true
before = textselector_range
@textselect_end = @textselect_start = index + trail
queue_draw if before == textselector_range
self end
def textselector_release(index = nil, trail=0)
textselector_select(index, trail) if index
@textselector_pressing = false
self end
def textselector_unselect
@textselect_end = @textselect_start = nil
@textselector_pressing = false
queue_draw
self end
def textselector_select(index, trail=0)
if(@textselector_pressing)
before = textselector_range
@textselect_end = index + trail
queue_draw if before == textselector_range
end
self end
def textselector_attr_list(attr_list=Pango::AttrList.new)
if textselector_range
bg = ::Pango::AttrBackground.new(*BLACK)
fg = ::Pango::AttrForeground.new(*WHITE)
bg.start_index = fg.start_index = plain_description[0...textselector_range.first].bytesize
bg.end_index = fg.end_index = plain_description[0...textselector_range.last].bytesize
attr_list.insert(bg)
attr_list.insert(fg)
end
attr_list
end
end
end
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