Class: Canis::ApplicationHeader

Inherits:
Widget show all
Defined in:
lib/canis/core/widgets/applicationheader.rb

Overview

Maintain an application header on the top of an application. Application related text may be placed in the left, center or right slots.

Example

a = ApplicationHeader.new “MyApp v1.0”, :text_center => “Application Name”, :text_right => “module”,

:color => :white, :bgcolor => :blue

# Later as user traverses a list or table, update row number on app header a.text_right “Row #n”

Instance Attribute Summary

Attributes inherited from Widget

#_object_created, #col_offset, #config, #curpos, #focussed, #form, #handler, #id, #key_label, #parent_component, #row_offset, #state

Instance Method Summary collapse

Methods inherited from Widget

#action_manager, #bgcolor, #changed, #click, #color, #color_pair, #command, #destroy, #enter, #focus, #focusable, #focusable?, #getvalue_for_paint, #handle_key, #hide, #init_vars, #leave, #modified?, #move, #on_enter, #on_leave, #override_graphic, #process_key, #property_set, #remove, #repaint_all, #repaint_required, #rowcol, #set_form, #set_form_col, #set_form_row, #set_modified, #setformrowcol, #setrowcol, #show, #unbind_key

Methods included from Io

#__create_footer_window, #clear_this, #get_file, #print_this, #rb_getchar, #rb_gets, #rb_getstr, #warn

Methods included from Utils

#ORIG_process_key, #ORIGbind_key, #ORIGkeycode_tos, #_process_key, #bind_composite_mapping, #bind_key, #bind_keys, #check_composite_mapping, #create_logger, #define_key, #define_prefix_command, #execute_mapping, #get_attrib, #get_color, #key, #key_tos, #print_key_bindings, #repeatm, #run_command, #shell_out, #shell_output, #suspend, #view, #xxxbind_composite_mapping

Methods included from ConfigSetup

#config_setup, #variable_set

Methods included from EventHandler

#bind, #event?, #event_list, #fire_handler, #fire_property_change, #register_events

Constructor Details

#initialize(form, text1, config = {}, &block) ⇒ ApplicationHeader

Returns a new instance of ApplicationHeader.

Parameters:

  • text1 —

    String text on left of header



43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/canis/core/widgets/applicationheader.rb', line 43

def initialize form, text1, config={}, &block

  @name = "header"
  @text1 = text1
  # setting default first or else Widget will place its BW default
  @color, @bgcolor = ColorMap.get_colors_for_pair $bottomcolor
  super form, config, &block
  @color_pair = get_color $bottomcolor, @color, @bgcolor
  @window = form.window
  @editable = false
  @focusable = false
  @cols ||= Ncurses.COLS-1
  @row ||= 0
  @col ||= 0
  @repaint_required = true
  #@color_pair ||= $bottomcolor  # XXX this was forcing the color
  #pair
  @text2 ||= ""
  @text_center ||= ""
  @text_right ||= ""
end

Instance Method Details

#getvalue ⇒ Object

returns value of text1, i.e. text on left of header



65
66
67
 
# File 'lib/canis/core/widgets/applicationheader.rb', line 65

def getvalue
  @text1
end

#print_center(htext, r = 0, c = 0) ⇒ Object

internal method, called by repaint to print text_center in the center



103
104
105
106
107
108
109
110
 
# File 'lib/canis/core/widgets/applicationheader.rb', line 103

def print_center(htext, r = 0, c = 0)
  win = @window
  len = win.getmaxx
  len = Ncurses.COLS-0 if len == 0 || len > Ncurses.COLS
  #
  #@form.window.printstring r, c, "%-*s" % [len, htext], @color_pair, @attr
  win.printstring r, ((len-htext.length)/2).floor, htext, @color_pair, @attr
end

#print_header(htext, r = 0, c = 0) ⇒ Object

internal method, called by repain to print text1 and text2 on left side



94
95
96
97
98
99
100
101
 
# File 'lib/canis/core/widgets/applicationheader.rb', line 94

def print_header(htext, r = 0, c = 0)
  #win = @window
  #len = @window.width
  #len = Ncurses.COLS-0 if len == 0
  #
  #@form.window.printstring r, c, "%-*s" % [len, htext], @color_pair, @attr
  @form.window.printstring r, c, htext, @color_pair, @attr
end

#print_top_right(htext) ⇒ Object

internal method to print text_right



112
113
114
115
116
117
118
 
# File 'lib/canis/core/widgets/applicationheader.rb', line 112

def print_top_right(htext)
  hlen = htext.length
  len = @window.getmaxx # width was not changing when resize happens
  len = Ncurses.COLS-0 if len == 0 || len > Ncurses.COLS
  $log.debug " def print_top_right(#{htext}) #{len} #{Ncurses.COLS} "
  @form.window.printstring 0, len-hlen, htext, @color_pair, @attr
end

#repaint ⇒ Object

XXX need to move wrapping etc up and done once.



71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
 
# File 'lib/canis/core/widgets/applicationheader.rb', line 71

def repaint
  return unless @repaint_required
 
  # 2014-08-10 - 14:53 changing bgcolor or color resets color_pair, so this must be reset if nil
  @color_pair ||= get_color $bottomcolor, @color, @bgcolor
  #print_header(htext, posy = 0, posx = 0)
  att = get_attrib @attr
  len = @window.width
  len = Ncurses.COLS-0 if len == 0
  # print a bar across the screen 
  @window.attron(Ncurses.COLOR_PAIR(@color_pair) | att)
  @window.mvhline(@row, @col, 1, len)
  @window.attroff(Ncurses.COLOR_PAIR(@color_pair) | att)
  #print_header(@text1 + " %15s " % @text2 + " %20s" % @text_center , posy=0, posx=0)

  # Now print the text in the correct positions with no padding, else some terminal
  # will blacken the text out.
  print_header("#{@text1}  #{@text2}") # + " %20s" % @text_center , posy=0, posx=0)
  print_center("#{@text_center}") # + " %20s" % @text_center , posy=0, posx=0)
  print_top_right(@text_right)
  @repaint_required = false
end