Class: Glimmer::SWT::Custom::Shape

Inherits:
Object
  • Object
show all
Includes:
Properties
Defined in:
lib/glimmer/swt/custom/shape/arc.rb,
lib/glimmer/swt/custom/shape/line.rb,
lib/glimmer/swt/custom/shape/oval.rb,
lib/glimmer/swt/custom/shape/path.rb,
lib/glimmer/swt/custom/shape/quad.rb,
lib/glimmer/swt/custom/shape/text.rb,
lib/glimmer/swt/custom/shape/cubic.rb,
lib/glimmer/swt/custom/shape/focus.rb,
lib/glimmer/swt/custom/shape/image.rb,
lib/glimmer/swt/custom/shape/point.rb,
lib/glimmer/swt/custom/shape/polygon.rb,
lib/glimmer/swt/custom/shape/polyline.rb,
lib/glimmer/swt/custom/shape/rectangle.rb,
lib/glimmer/swt/custom/shape/path_segment.rb,
lib/glimmer/swt/custom/shape.rb

Overview

Represents a shape (graphics) to be drawn on a control/widget/canvas/display That is because Shape is drawn on a parent as graphics and doesn’t have an SWT widget for itself

Direct Known Subclasses

Arc, Focus, Image, Line, Oval, Path, Point, Polygon, Polyline, Rectangle, Text

Defined Under Namespace

Modules: PathSegment Classes: Arc, Cubic, Focus, Image, Line, Oval, Path, Point, Polygon, Polyline, Quad, Rectangle, Text

Constant Summary collapse

String = 
Text

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Properties

attribute_getter, #attribute_getter, attribute_setter, #attribute_setter, normalized_attribute, #normalized_attribute, ruby_attribute_getter, #ruby_attribute_setter, ruby_attribute_setter

Constructor Details

#initialize(parent, keyword, *args, &property_block) ⇒ Shape

Returns a new instance of Shape.



135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
 
# File 'lib/glimmer/swt/custom/shape.rb', line 135

def initialize(parent, keyword, *args, &property_block)
  @parent = parent
  @drawable = @parent.is_a?(Drawable) ? @parent : @parent.drawable
  @name = keyword
  @options = self.class.arg_options(args, extract: true)
  @method_name = self.class.method_name(keyword, @options) unless keyword.to_s == 'shape'
  @args = args
  @properties = {}
  @shapes = [] # nested shapes
  @options.reject {|key, value| %w[fill gradient round].include?(key.to_s)}.each do |property, property_args|
    @properties[property] = property_args
  end
  @parent.add_shape(self)
  post_add_content if property_block.nil?
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args, &block) ⇒ Object 



593
594
595
596
597
598
599
600
601
 
# File 'lib/glimmer/swt/custom/shape.rb', line 593

def method_missing(method_name, *args, &block)
  if method_name.to_s.end_with?('=')
    set_attribute(method_name, *args)
  elsif has_attribute?(method_name)
    get_attribute(method_name)
  else
    super
  end
end

Instance Attribute Details

#args ⇒ Object (readonly)

Returns the value of attribute args.



132
133
134
 
# File 'lib/glimmer/swt/custom/shape.rb', line 132

def args
  @args
end

#drawable ⇒ Object (readonly)

Returns the value of attribute drawable.



132
133
134
 
# File 'lib/glimmer/swt/custom/shape.rb', line 132

def drawable
  @drawable
end

#extent ⇒ Object

Returns the value of attribute extent.



133
134
135
 
# File 'lib/glimmer/swt/custom/shape.rb', line 133

def extent
  @extent
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



132
133
134
 
# File 'lib/glimmer/swt/custom/shape.rb', line 132

def name
  @name
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



132
133
134
 
# File 'lib/glimmer/swt/custom/shape.rb', line 132

def options
  @options
end

#parent ⇒ Object (readonly)

Returns the value of attribute parent.



132
133
134
 
# File 'lib/glimmer/swt/custom/shape.rb', line 132

def parent
  @parent
end

#properties ⇒ Object (readonly)

Returns the value of attribute properties.



132
133
134
 
# File 'lib/glimmer/swt/custom/shape.rb', line 132

def properties
  @properties
end

#shapes ⇒ Object (readonly)

Returns the value of attribute shapes.



132
133
134
 
# File 'lib/glimmer/swt/custom/shape.rb', line 132

def shapes
  @shapes
end

Class Method Details

.arg_options(args, extract: false) ⇒ Object 



95
96
97
98
99
100
101
 
# File 'lib/glimmer/swt/custom/shape.rb', line 95

def arg_options(args, extract: false)
  arg_options_method = extract ? :pop : :last
  options = args.send(arg_options_method).symbolize_keys if args.last.is_a?(Hash)
  # normalize :filled option as an alias to :fill
#             options[:fill] = options.delete(:filled) if options&.keys&.include?(:filled)
  options.nil? ? {} : options
end

.create(parent, keyword, *args, &property_block) ⇒ Object 



66
67
68
69
70
71
72
73
 
# File 'lib/glimmer/swt/custom/shape.rb', line 66

def create(parent, keyword, *args, &property_block)
  potential_shape_class_name = keyword.to_s.camelcase(:upper).to_sym
  if constants.include?(potential_shape_class_name)
    const_get(potential_shape_class_name).new(parent, keyword, *args, &property_block)
  else
    new(parent, keyword, *args, &property_block)
  end
end

.flyweight_method_names ⇒ Object 



115
116
117
 
# File 'lib/glimmer/swt/custom/shape.rb', line 115

def flyweight_method_names
  @flyweight_method_names ||= {}
end

.flyweight_patterns ⇒ Object 



127
128
129
 
# File 'lib/glimmer/swt/custom/shape.rb', line 127

def flyweight_patterns
  @flyweight_patterns ||= {}
end

.gc_instance_methods ⇒ Object 



81
82
83
 
# File 'lib/glimmer/swt/custom/shape.rb', line 81

def gc_instance_methods
  @gc_instance_methods ||= org.eclipse.swt.graphics.GC.instance_methods.map(&:to_s)
end

.keywords ⇒ Object 



85
86
87
88
89
90
91
92
93
 
# File 'lib/glimmer/swt/custom/shape.rb', line 85

def keywords
  @keywords ||= gc_instance_methods.select do |method_name|
    !method_name.end_with?('=') && (method_name.start_with?('draw_') || method_name.start_with?('fill_'))
  end.reject do |method_name|
    gc_instance_methods.include?("#{method_name}=") || gc_instance_methods.include?("set_#{method_name}")
  end.map do |method_name|
    method_name.gsub(/(draw|fill|gradient|round)_/, '')
  end.uniq.compact.to_a
end

.method_name(keyword, method_arg_options) ⇒ Object 



103
104
105
106
107
108
109
110
111
112
113
 
# File 'lib/glimmer/swt/custom/shape.rb', line 103

def method_name(keyword, method_arg_options)
  keyword = keyword.to_s
  method_arg_options = method_arg_options.select {|key, value| %w[fill gradient round].include?(key.to_s)}
  unless flyweight_method_names.keys.include?([keyword, method_arg_options])
    gradient = 'Gradient' if method_arg_options[:gradient]
    round = 'Round' if method_arg_options[:round]
    gc_instance_method_name_prefix = !['polyline', 'point', 'image', 'focus'].include?(keyword) && (method_arg_options[:fill] || method_arg_options[:gradient]) ? 'fill' : 'draw'
    flyweight_method_names[[keyword, method_arg_options]] = "#{gc_instance_method_name_prefix}#{gradient}#{round}#{keyword.capitalize}"
  end
  flyweight_method_names[[keyword, method_arg_options]]
end

.pattern(*args) ⇒ Object 



119
120
121
122
123
124
125
 
# File 'lib/glimmer/swt/custom/shape.rb', line 119

def pattern(*args)
  found_pattern = flyweight_patterns[args]
  if found_pattern.nil? || found_pattern.is_disposed
    found_pattern = flyweight_patterns[args] = org.eclipse.swt.graphics.Pattern.new(*args)
  end
  found_pattern
end

.valid?(parent, keyword, *args, &block) ⇒ Boolean

Returns:

  • (Boolean) 


75
76
77
78
79
 
# File 'lib/glimmer/swt/custom/shape.rb', line 75

def valid?(parent, keyword, *args, &block)
  return true if keyword.to_s == 'shape'
  gc_instance_methods.include?(method_name(keyword, arg_options(args))) ||
    constants.include?(keyword.to_s.camelcase(:upper).to_sym)
end

Instance Method Details

#absolute_x ⇒ Object 



1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1145

def absolute_x
  absolute_x_dependencies = [calculated_x, parent.is_a?(Shape) && parent.absolute_x]
  if absolute_x_dependencies != @absolute_x_dependencies
    # do not repeat calculations
    calculated_x, parent_absolute_x = @absolute_x_dependencies = absolute_x_dependencies
    x = calculated_x
    @absolute_x = if parent.is_a?(Shape)
      parent_absolute_x + x
    else
      x
    end
  end
  @absolute_x
end

#absolute_y ⇒ Object 



1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1160

def absolute_y
  absolute_y_dependencies = [calculated_y, parent.is_a?(Shape) && parent.absolute_y]
  if absolute_y_dependencies != @absolute_y_dependencies
    calculated_y, parent_absolute_y = @absolute_y_dependencies = absolute_y_dependencies
    y = calculated_y
    @absolute_y = if parent.is_a?(Shape)
      parent_absolute_y + y
    else
      y
    end
  end
  @absolute_y
end

#add_shape(shape) ⇒ Object 



151
152
153
154
 
# File 'lib/glimmer/swt/custom/shape.rb', line 151

def add_shape(shape)
  @shapes << shape
  calculated_args_changed_for_defaults!
end

#all_parent_properties ⇒ Object 



728
729
730
731
732
 
# File 'lib/glimmer/swt/custom/shape.rb', line 728

def all_parent_properties
  @all_parent_properties ||= parent_shape_containers.reverse.reduce({}) do |all_properties, parent_shape|
    all_properties.merge(parent_shape.converted_properties)
  end
end

#amend_method_name_options_based_on_properties! ⇒ Object 



451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
 
# File 'lib/glimmer/swt/custom/shape.rb', line 451

def amend_method_name_options_based_on_properties!
  @original_method_name = @method_name
  return if @name == 'point'
  if (@name != 'text' && @name != 'string' && has_some_background? && !has_some_foreground?) || (@name == 'path' && has_some_background?)
    @options[:fill] = true
  elsif !has_some_background? && has_some_foreground?
    @options[:fill] = false
  elsif @name == 'rectangle' && has_some_background? && has_some_foreground?
    @options[:fill] = true
    @options[:gradient] = true
  end
  if @name == 'rectangle' && @args.size > 4 && @args.last.is_a?(Numeric)
    @options[:round] = true
  end
  @method_name = self.class.method_name(@name, @options)
end

#apply_property_arg_conversions(property, args) ⇒ Object 



306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
 
# File 'lib/glimmer/swt/custom/shape.rb', line 306

def apply_property_arg_conversions(property, args)
  method_name = attribute_setter(property)
  args = args.dup
  the_java_method = org.eclipse.swt.graphics.GC.java_class.declared_instance_methods.detect {|m| m.name == method_name}
  return args if the_java_method.nil?
  if the_java_method.parameter_types.first == org.eclipse.swt.graphics.Color.java_class && args.first.is_a?(org.eclipse.swt.graphics.RGB)
    args[0] = [args[0].red, args[0].green, args[0].blue]
  end
  if ['setBackground', 'setForeground'].include?(method_name.to_s) && args.first.is_a?(Array)
    args[0] = ColorProxy.new(args[0])
  end
  if method_name.to_s == 'setLineDash' && args.size > 1
    args[0] = args.dup
    args[1..-1] = []
  end
  if method_name.to_s == 'setAntialias' && [nil, true, false].include?(args.first)
    args[0] = case args.first
    when true
      args[0] = :on
    when false
      args[0] = :off
    when nil
      args[0] = :default
    end
  end
  if args.first.is_a?(Symbol) || args.first.is_a?(::String)
    if the_java_method.parameter_types.first == org.eclipse.swt.graphics.Color.java_class
      args[0] = ColorProxy.new(args[0])
    end
    if method_name.to_s == 'setLineStyle'
      args[0] = "line_#{args[0]}" if !args[0].to_s.downcase.start_with?('line_')
    end
    if method_name.to_s == 'setFillRule'
      args[0] = "fill_#{args[0]}" if !args[0].to_s.downcase.start_with?('fill_')
    end
    if method_name.to_s == 'setLineCap'
      args[0] = "cap_#{args[0]}" if !args[0].to_s.downcase.start_with?('cap_')
    end
    if method_name.to_s == 'setLineJoin'
      args[0] = "join_#{args[0]}" if !args[0].to_s.downcase.start_with?('join_')
    end
    if the_java_method.parameter_types.first == Java::int.java_class
      args[0] = SWTProxy.constant(args[0])
    end
  end
  if args.first.is_a?(ColorProxy)
    args[0] = args[0].swt_color
  end
  if (args.first.is_a?(Hash) || args.first.is_a?(org.eclipse.swt.graphics.FontData)) && the_java_method.parameter_types.first == org.eclipse.swt.graphics.Font.java_class
    args[0] = FontProxy.new(args[0])
  end
  if args.first.is_a?(FontProxy)
    args[0] = args[0].swt_font
  end
  if args.first.is_a?(TransformProxy)
    args[0] = args[0].swt_transform
  end
  if ['setBackgroundPattern', 'setForegroundPattern'].include?(method_name.to_s)
    @drawable.requires_shape_disposal = true
    args = args.first if args.first.is_a?(Array)
    args.each_with_index do |arg, i|
      arg = ColorProxy.new(arg.red, arg.green, arg.blue) if arg.is_a?(org.eclipse.swt.graphics.RGB)
      arg = ColorProxy.new(arg) if arg.is_a?(Symbol) || arg.is_a?(::String)
      arg = arg.swt_color if arg.is_a?(ColorProxy)
      args[i] = arg
    end
    @pattern_args ||= {}
    pattern_type = method_name.to_s.match(/set(.+)Pattern/)[1]
    if args.first.is_a?(org.eclipse.swt.graphics.Pattern)
      new_args = @pattern_args[pattern_type]
    else
      new_args = args.first.is_a?(org.eclipse.swt.widgets.Display) ? args : ([DisplayProxy.instance.swt_display] + args)
      @pattern_args[pattern_type] = new_args.dup
    end
    args[0] = pattern(*new_args, type: pattern_type)
    args[1..-1] = []
  end
  args
end

#apply_shape_arg_conversions! ⇒ Object 



386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
 
# File 'lib/glimmer/swt/custom/shape.rb', line 386

def apply_shape_arg_conversions!
  if @args.size > 1 && (['polygon', 'polyline'].include?(@name))
    @args[0] = @args.dup
    @args[1..-1] = []
  end
  if @name == 'image'
    if @args.first.is_a?(::String)
      @args[0] = ImageProxy.new(@args[0])
    end
    if @args.first.is_a?(ImageProxy)
      @image = @args[0] = @args[0].swt_image
    end
    if @args.first.nil?
      @image = nil
    end
  end
  if @name == 'text'
    if @args[3].is_a?(Symbol) || @args[3].is_a?(::String)
      @args[3] = [@args[3]]
    end
    if @args[3].is_a?(Array)
      if @args[3].size == 1 && @args[3].first.is_a?(Array)
        @args[3] = @args[3].first
      end
      @args[3] = SWTProxy[*@args[3]]
    end
  end
end

#apply_shape_arg_defaults! ⇒ Object 



415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
 
# File 'lib/glimmer/swt/custom/shape.rb', line 415

def apply_shape_arg_defaults!
  if current_parameter_name?(:dest_x) && dest_x.nil?
    self.dest_x = :default
  elsif parameter_name?(:x) && x.nil?
    self.x = :default
  end
  if current_parameter_name?(:dest_y) && dest_y.nil?
    self.dest_y = :default
  elsif parameter_name?(:y) && y.nil?
    self.y = :default
  end
  self.width = :default if current_parameter_name?(:width) && width.nil?
  self.height = :default if current_parameter_name?(:height) && height.nil?
  if @name.include?('rectangle') && round? && @args.size.between?(4, 5)
    (6 - @args.size).times {@args << 60}
  elsif @name.include?('rectangle') && gradient? && @args.size == 4
    set_attribute('vertical', true, redraw: false)
  elsif (@name.include?('text') || @name.include?('string')) && !@properties.keys.map(&:to_s).include?('background') && @args.size < 4
    set_attribute('is_transparent', true, redraw: false)
  end
  if @name.include?('image')
    @drawable.requires_shape_disposal = true
  end
end

#background_pattern_args ⇒ Object 



626
627
628
 
# File 'lib/glimmer/swt/custom/shape.rb', line 626

def background_pattern_args
  pattern_args(type: 'background')
end

#bounds ⇒ Object

The bounding box top-left x, y, width, height in absolute positioning



175
176
177
178
179
180
181
182
183
 
# File 'lib/glimmer/swt/custom/shape.rb', line 175

def bounds
  bounds_dependencies = [absolute_x, absolute_y, calculated_width, calculated_height]
  if bounds_dependencies != @bounds_dependencies
    # avoid repeating calculations
    absolute_x, absolute_y, calculated_width, calculated_height = @bounds_dependencies = bounds_dependencies
    @bounds = org.eclipse.swt.graphics.Rectangle.new(absolute_x, absolute_y, calculated_width, calculated_height)
  end
  @bounds
end

#calculate_args! ⇒ Object

args translated to absolute coordinates



835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
 
# File 'lib/glimmer/swt/custom/shape.rb', line 835

def calculate_args!
# TODO add conditions for parent having default width/height too
  return @args if parent.is_a?(Drawable) && !default_x? && !default_y? && !default_width? && !default_height? && !max_width? && !max_height?
  calculated_args_dependencies = [
    x,
    y,
    parent.is_a?(Shape) && parent.absolute_x,
    parent.is_a?(Shape) && parent.absolute_y,
    default_width? && default_width,
    default_width? && width_delta,
    default_height? && default_height,
    default_height? && height_delta,
    max_width? && max_width,
    max_width? && width_delta,
    max_height? && max_height,
    max_height? && height_delta,
    default_x? && default_x,
    default_x? && x_delta,
    default_y? && default_y,
    default_y? && y_delta,
  ]
  if calculated_args_dependencies != @calculated_args_dependencies
    # avoid recalculating values again
    x, y, parent_absolute_x, parent_absolute_y, default_width, default_width_delta, default_height, default_height_delta, max_width, max_width_delta, max_height, max_height_delta, default_x, default_x_delta, default_y, default_y_delta = @calculated_args_dependencies = calculated_args_dependencies
    # Note: Must set x and move_by because not all shapes have a real x and some must translate all their points with move_by
    # TODO change that by setting a bounding box for all shapes with a calculated top-left x, y and
    # a setter that does the moving inside them instead so that I could rely on absolute_x and absolute_y
    # here to get the job done of calculating absolute args
    @perform_redraw = false
    original_x = nil
    original_y = nil
    original_width = nil
    original_height = nil
    if parent.is_a?(Shape)
      @parent_absolute_x = parent_absolute_x
      @parent_absolute_y = parent_absolute_y
    end
    if default_width?
      original_width = width
      self.width = default_width + default_width_delta
    end
    if default_height?
      original_height = height
      self.height = default_height + default_height_delta
    end
    if max_width?
      original_width = width
      self.width = max_width + max_width_delta
    end
    if max_height?
      original_height = height
      self.height = max_height + max_height_delta
    end
    if default_x?
      original_x = x
      self.x = default_x + default_x_delta
    end
    if default_y?
      original_y = y
      self.y = default_y + default_y_delta
    end
    if parent.is_a?(Shape)
      move_by(@parent_absolute_x, @parent_absolute_y)
      @result_calculated_args = @args.clone
      move_by(-1*@parent_absolute_x, -1*@parent_absolute_y)
    else
      @result_calculated_args = @args.clone
    end
    if original_x
      self.x = original_x
    end
    if original_y
      self.y = original_y
    end
    if original_width
      self.width = original_width
    end
    if original_height
      self.height = original_height
    end
    @perform_redraw = true
  end
  @result_calculated_args
end

#calculate_paint_args! ⇒ Object 



1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1189

def calculate_paint_args!
  unless @calculated_paint_args
    if @name == 'pixel'
      @name = 'point'
      # optimized performance calculation for pixel points
      if !@properties[:foreground].is_a?(org.eclipse.swt.graphics.Color)
        if @properties[:foreground].is_a?(Array)
          @properties[:foreground] = ColorProxy.new(@properties[:foreground], ensure_bounds: false)
        end
        if @properties[:foreground].is_a?(Symbol) || @properties[:foreground].is_a?(::String)
         @properties[:foreground] = ColorProxy.new(@properties[:foreground], ensure_bounds: false)
        end
        if @properties[:foreground].is_a?(ColorProxy)
          @properties[:foreground] = @properties[:foreground].swt_color
        end
      end
    else
      @properties = all_parent_properties.merge(@properties)
      @properties['background'] = [@drawable.background] if fill? && !has_some_background?
      @properties['foreground'] = [@drawable.foreground] if @drawable.respond_to?(:foreground) && draw? && !has_some_foreground?
      # TODO regarding alpha, make sure to reset it to parent stored alpha once we allow setting shape properties on parents directly without shapes
      @properties['font'] = [@drawable.font] if @drawable.respond_to?(:font) && @name == 'text' && draw? && !@properties.keys.map(&:to_s).include?('font')
      # TODO regarding transform, make sure to reset it to parent stored transform once we allow setting shape properties on parents directly without shapes
      # Also do that with all future-added properties
      convert_properties!
      apply_shape_arg_conversions!
      apply_shape_arg_defaults!
      tolerate_shape_extra_args!
      @calculated_paint_args = true
    end
  end
end

#calculated_args? ⇒ Boolean

Returns:

  • (Boolean) 


830
831
832
 
# File 'lib/glimmer/swt/custom/shape.rb', line 830

def calculated_args?
  !!@calculated_args
end

#calculated_args_changed!(children: true) ⇒ Object 



807
808
809
810
811
 
# File 'lib/glimmer/swt/custom/shape.rb', line 807

def calculated_args_changed!(children: true)
  # TODO add a children: true option to enable setting to false to avoid recalculating children args
  @calculated_args = nil
  shapes.each(&:calculated_args_changed!) if children
end

#calculated_args_changed_for_defaults! ⇒ Object

Notifies object that calculated args changed for defaults. Returns true if redrawing and false otherwise.



814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
 
# File 'lib/glimmer/swt/custom/shape.rb', line 814

def calculated_args_changed_for_defaults!
  has_default_dimensions = default_width? || default_height?
  parent_calculated_args_changed_for_defaults = has_default_dimensions
  calculated_args_changed!(children: false) if default_x? || default_y? || has_default_dimensions
  if has_default_dimensions && parent.is_a?(Shape)
    parent.calculated_args_changed_for_defaults!
  elsif @content_added && !drawable.is_disposed
    # TODO consider optimizing in the future if needed by ensuring one redraw for all parents in the hierarchy at the end instead of doing one per parent that needs it
    if !@painting && !drawable.is_a?(ImageProxy)
      drawable.redraw
      return true
    end
  end
  false
end

#calculated_height ⇒ Object 



1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1067

def calculated_height
  calculated_height_dependencies = [height, default_height? && (default_height + height_delta), max_height? && (max_height + height_delta)]
  if calculated_height_dependencies != @calculated_height_dependencies
    @calculated_height_dependencies = calculated_height_dependencies
    result_height = height
    result_height = (default_height + height_delta) if default_height?
    result_height = (max_height + height_delta) if max_height?
    @calculated_height = result_height
  end
  @calculated_height
end

#calculated_width ⇒ Object 



1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1055

def calculated_width
  calculated_width_dependencies = [width, default_width? && (default_width + width_delta), max_width? && (max_width + width_delta)]
  if calculated_width_dependencies != @calculated_width_dependencies
    @calculated_width_dependencies = calculated_width_dependencies
    result_width = width
    result_width = (default_width + width_delta) if default_width?
    result_width = (max_width + width_delta) if max_width?
    @calculated_width = result_width
  end
  @calculated_width
end

#calculated_x ⇒ Object 



1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1123

def calculated_x
  calculated_x_dependencies = [default_x? && default_x, !default_x? && self.x, self.x_delta]
  if calculated_x_dependencies != @calculated_x_dependencies
    default_x, x, x_delta = @calculated_x_dependencies = calculated_x_dependencies
    result = default_x? ? default_x : x
    result += x_delta
    @calculated_x = result
  end
  @calculated_x
end

#calculated_y ⇒ Object 



1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1134

def calculated_y
  calculated_y_dependencies = [default_y? && default_y, !default_y? && self.y, self.y_delta]
  if calculated_y_dependencies != @calculated_y_dependencies
    default_y, y, y_delta = @calculated_y_dependencies = calculated_y_dependencies
    result = default_y? ? default_y : y
    result += y_delta
    @calculated_y = result
  end
  @calculated_y
end

#can_handle_observation_request?(observation_request) ⇒ Boolean

Returns:

  • (Boolean) 


567
568
569
 
# File 'lib/glimmer/swt/custom/shape.rb', line 567

def can_handle_observation_request?(observation_request)
  drawable.can_handle_observation_request?(observation_request)
end

#center_x ⇒ Object 



263
264
265
266
267
268
269
270
271
 
# File 'lib/glimmer/swt/custom/shape.rb', line 263

def center_x
  center_x_dependencies = [x_end, calculated_width]
  if center_x_dependencies != @center_x_dependencies
    @center_x_dependencies = center_x_dependencies
    the_x_end, the_calculated_width = center_x_dependencies
    @center_x = the_x_end - the_calculated_width/2.0
  end
  @center_x
end

#center_y ⇒ Object 



273
274
275
276
277
278
279
280
281
 
# File 'lib/glimmer/swt/custom/shape.rb', line 273

def center_y
  center_y_dependencies = [y_end, calculated_height]
  if center_y_dependencies != @center_y_dependencies
    @center_y_dependencies = center_y_dependencies
    the_y_end, the_calculated_height = center_y_dependencies
    @center_y = the_y_end - the_calculated_height/2.0
  end
  @center_y
end

#clear_shapes(dispose_images: true, dispose_patterns: true, redraw: :all) ⇒ Object

clear all shapes indicate whether to dispose images, dispose patterns, and redraw after clearing shapes. redraw can be ‘:all` or `true` to mean redraw after all shapes are disposed, `:each` to mean redraw after each shape is disposed, or `false` to avoid redraw altogether



653
654
655
656
657
658
659
660
661
662
 
# File 'lib/glimmer/swt/custom/shape.rb', line 653

def clear_shapes(dispose_images: true, dispose_patterns: true, redraw: :all)
  if redraw == true || redraw == :all
    shapes.dup.each {|shape| shape.dispose(dispose_images: dispose_images, dispose_patterns: dispose_patterns, redraw: false) }
    drawable.redraw if redraw && !drawable.is_a?(ImageProxy)
  elsif redraw == :each
    shapes.dup.each {|shape| shape.dispose(dispose_images: dispose_images, dispose_patterns: dispose_patterns, redraw: true) }
  else
    shapes.dup.each {|shape| shape.dispose(dispose_images: dispose_images, dispose_patterns: dispose_patterns, redraw: false) }
  end
end

#composite? ⇒ Boolean

Indicate if this is a composite shape (meaning a shape that contains nested shapes like a rectangle with ovals inside it)

Returns:

  • (Boolean) 


670
671
672
 
# File 'lib/glimmer/swt/custom/shape.rb', line 670

def composite?
  !shapes.empty?
end

#contain?(x, y) ⇒ Boolean

Returns if shape contains a point Subclasses (like polygon) may override to indicate if a point x,y coordinates falls inside the shape some shapes may choose to provide a fuzz factor to make usage of this method for mouse clicking more user friendly

Returns:

  • (Boolean) 


208
209
210
211
 
# File 'lib/glimmer/swt/custom/shape.rb', line 208

def contain?(x, y)
  # assume a rectangular filled shape by default (works for several shapes like image, text, and focus)
  x.between?(self.absolute_x, self.absolute_x + calculated_width) && y.between?(self.absolute_y, self.absolute_y + calculated_height)
end

#container? ⇒ Boolean

Indicate if this is a container shape (meaning a shape bag that is just there to contain nested shapes, but doesn’t render anything of its own)

Returns:

  • (Boolean) 


665
666
667
 
# File 'lib/glimmer/swt/custom/shape.rb', line 665

def container?
  @name == 'shape'
end

#content(&block) ⇒ Object 



283
284
285
286
287
288
 
# File 'lib/glimmer/swt/custom/shape.rb', line 283

def content(&block)
  Glimmer::SWT::DisplayProxy.instance.auto_exec do
    Glimmer::DSL::Engine.add_content(self, Glimmer::DSL::SWT::ShapeExpression.new, @name, &block)
    calculated_args_changed!(children: false)
  end
end

#convert_properties! ⇒ Object 



714
715
716
717
718
719
720
721
 
# File 'lib/glimmer/swt/custom/shape.rb', line 714

def convert_properties!
  if @properties != @converted_properties
    @properties.each do |property, args|
      @properties[property] = apply_property_arg_conversions(property, args)
    end
    @converted_properties = @properties.dup
  end
end

#converted_properties ⇒ Object 



723
724
725
726
 
# File 'lib/glimmer/swt/custom/shape.rb', line 723

def converted_properties
  convert_properties!
  @properties
end

#current_parameter_name?(attribute_name) ⇒ Boolean

Returns:

  • (Boolean) 


487
488
489
 
# File 'lib/glimmer/swt/custom/shape.rb', line 487

def current_parameter_name?(attribute_name)
  parameter_names.include?(attribute_name.to_s.to_sym)
end

#default_height ⇒ Object 



1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1019

def default_height
  default_height_dependencies = [shapes.empty? && max_height, shapes.size == 1 && shapes.first.max_height? && parent.size.y, shapes.size >= 1 && !shapes.first.max_height? && shapes.map {|s| s.max_height? ? 0 : s.y_end}]
  if default_height_dependencies != @default_height_dependencies
    # Do not repeat calculations
    max_height, parent_size_y, y_ends = @default_height_dependencies = default_height_dependencies
    @default_height = if shapes.empty?
      max_height
    elsif shapes.size == 1 && shapes.first.max_height?
      parent_size_y
    else
      y_ends.max.to_f
    end
  end
  @default_height
end

#default_height? ⇒ Boolean

Returns:

  • (Boolean) 


938
939
940
941
942
 
# File 'lib/glimmer/swt/custom/shape.rb', line 938

def default_height?
  return false unless current_parameter_name?(:height)
  height = self.height
  (height.nil? || height == :default || height == 'default' || (height.is_a?(Array) && (height.first.to_s == :default || height.first.to_s == 'default')))
end

#default_width ⇒ Object 



1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1003

def default_width
  default_width_dependencies = [shapes.empty? && max_width, shapes.size == 1 && shapes.first.max_width? && parent.size.x, shapes.size >= 1 && !shapes.first.max_width? && shapes.map {|s| s.max_width? ? 0 : s.x_end}]
  if default_width_dependencies != @default_width_dependencies
    # Do not repeat calculations
    max_width, parent_size_x, x_ends = @default_width_dependencies = default_width_dependencies
    @default_width = if shapes.empty?
      max_width
    elsif shapes.size == 1 && shapes.first.max_width?
      parent_size_x
    else
      x_ends.max.to_f
    end
  end
  @default_width
end

#default_width? ⇒ Boolean

Returns:

  • (Boolean) 


932
933
934
935
936
 
# File 'lib/glimmer/swt/custom/shape.rb', line 932

def default_width?
  return false unless current_parameter_name?(:width)
  width = self.width
  (width.nil? || width == :default || width == 'default' || (width.is_a?(Array) && (width.first.to_s == :default || width.first.to_s == 'default')))
end

#default_x ⇒ Object 



956
957
958
959
960
961
962
963
964
965
 
# File 'lib/glimmer/swt/custom/shape.rb', line 956

def default_x
  default_x_dependencies = [parent.size.x, size.x, parent.is_a?(Shape) && parent.irregular? && parent.bounds.x, parent.is_a?(Shape) && parent.irregular? && parent.absolute_x]
  if default_x_dependencies != @default_x_dependencies
    @default_x_dependencies = default_x_dependencies
    result = ((parent.size.x - size.x) / 2)
    result += parent.bounds.x - parent.absolute_x if parent.is_a?(Shape) && parent.irregular?
    @default_x = result
  end
  @default_x
end

#default_x? ⇒ Boolean

Returns:

  • (Boolean) 


920
921
922
923
924
 
# File 'lib/glimmer/swt/custom/shape.rb', line 920

def default_x?
  return false unless current_parameter_name?(:x)
  x = self.x
  x.nil? || x.to_s == 'default' || (x.is_a?(Array) && x.first.to_s == 'default')
end

#default_y ⇒ Object 



967
968
969
970
971
972
973
974
975
 
# File 'lib/glimmer/swt/custom/shape.rb', line 967

def default_y
  default_y_dependencies = [parent.size.y, size.y, parent.is_a?(Shape) && parent.irregular? && parent.bounds.y, parent.is_a?(Shape) && parent.irregular? && parent.absolute_y]
  if default_y_dependencies != @default_y_dependencies
    result = ((parent.size.y - size.y) / 2)
    result += parent.bounds.y - parent.absolute_y if parent.is_a?(Shape) && parent.irregular?
    @default_y = result
  end
  @default_y
end

#default_y? ⇒ Boolean

Returns:

  • (Boolean) 


926
927
928
929
930
 
# File 'lib/glimmer/swt/custom/shape.rb', line 926

def default_y?
  return false unless current_parameter_name?(:y)
  y = self.y
  y.nil? || y.to_s == 'default' || (y.is_a?(Array) && y.first.to_s == 'default')
end

#dispose(dispose_images: true, dispose_patterns: true, redraw: true) ⇒ Object 



634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
 
# File 'lib/glimmer/swt/custom/shape.rb', line 634

def dispose(dispose_images: true, dispose_patterns: true, redraw: true)
  shapes.each { |shape| shape.is_a?(Shape::Path) && shape.dispose } # TODO look into why I'm only disposing paths
  if dispose_patterns
    @background_pattern&.dispose
    @background_pattern = nil
    @foreground_pattern&.dispose
    @foreground_pattern = nil
  end
  if dispose_images
    @image&.dispose
    @image = nil
  end
  @parent.shapes.delete(self)
  drawable.redraw if redraw && !drawable.is_a?(ImageProxy)
end

#draw? ⇒ Boolean Also known as: drawn?

Returns:

  • (Boolean) 


156
157
158
 
# File 'lib/glimmer/swt/custom/shape.rb', line 156

def draw?
  !fill?
end

#ensure_extent(paint_event) ⇒ Object 



782
783
784
785
786
787
788
789
790
791
792
793
794
795
 
# File 'lib/glimmer/swt/custom/shape.rb', line 782

def ensure_extent(paint_event)
  old_extent = @extent
  if ['text', 'string'].include?(@name)
    extent_args = [string]
    extent_flags = SWTProxy[:draw_transparent] if current_parameter_name?(:is_transparent) && is_transparent
    extent_flags = flags if current_parameter_name?(:flags)
    extent_args << extent_flags unless extent_flags.nil?
    self.extent = paint_event.gc.send("#{@name}Extent", *extent_args)
  end
  if !@extent.nil? && (old_extent&.x != @extent&.x || old_extent&.y != @extent&.y)
    calculated_args_changed!
    parent.calculated_args_changed_for_defaults! if parent.is_a?(Shape)
  end
end

#expanded_shapes ⇒ Object 



797
798
799
800
801
802
803
804
805
 
# File 'lib/glimmer/swt/custom/shape.rb', line 797

def expanded_shapes
  if shapes.to_a.any?
    shapes.map do |shape|
      [shape] + shape.expanded_shapes
    end.flatten
  else
    []
  end
end

#fill? ⇒ Boolean Also known as: filled?

Returns:

  • (Boolean) 


161
162
163
 
# File 'lib/glimmer/swt/custom/shape.rb', line 161

def fill?
  @options[:fill]
end

#foreground_pattern_args ⇒ Object 



630
631
632
 
# File 'lib/glimmer/swt/custom/shape.rb', line 630

def foreground_pattern_args
  pattern_args(type: 'foreground')
end

#get_attribute(attribute_name) ⇒ Object 



556
557
558
559
560
561
562
563
564
565
 
# File 'lib/glimmer/swt/custom/shape.rb', line 556

def get_attribute(attribute_name)
  if parameter_name?(attribute_name)
    arg_index = parameter_index(attribute_name)
    @args[arg_index] if arg_index
  elsif (respond_to?(attribute_name, super: true) and respond_to?(ruby_attribute_setter(attribute_name), super: true))
    self.send(attribute_name)
  else
    @properties[attribute_name.to_s]
  end
end

#get_data(key = nil) ⇒ Object Also known as: getData, data

Gets data just like SWT widgets



586
587
588
589
 
# File 'lib/glimmer/swt/custom/shape.rb', line 586

def get_data(key=nil)
  @data ||= {}
  @data[key]
end

#get_parameter_attribute(attribute_name) ⇒ Object 



495
496
497
 
# File 'lib/glimmer/swt/custom/shape.rb', line 495

def get_parameter_attribute(attribute_name)
  @args[parameter_index(ruby_attribute_getter(attribute_name))]
end

#gradient? ⇒ Boolean

Returns:

  • (Boolean) 


166
167
168
 
# File 'lib/glimmer/swt/custom/shape.rb', line 166

def gradient?
  @options[:gradient]
end

#handle_observation_request(observation_request, &block) ⇒ Object 



571
572
573
574
575
576
 
# File 'lib/glimmer/swt/custom/shape.rb', line 571

def handle_observation_request(observation_request, &block)
  shape_block = lambda do |event|
    block.call(event) if include?(event.x, event.y)
  end
  drawable.handle_observation_request(observation_request, &shape_block)
end

#has_attribute?(attribute_name, *args) ⇒ Boolean

Returns:

  • (Boolean) 


503
504
505
506
507
 
# File 'lib/glimmer/swt/custom/shape.rb', line 503

def has_attribute?(attribute_name, *args)
  self.class.gc_instance_methods.include?(attribute_setter(attribute_name)) or
    parameter_name?(attribute_name) or
    (respond_to?(attribute_name, super: true) and respond_to?(ruby_attribute_setter(attribute_name), super: true))
end

#has_some_background? ⇒ Boolean

Returns:

  • (Boolean) 


290
291
292
 
# File 'lib/glimmer/swt/custom/shape.rb', line 290

def has_some_background?
  @properties.keys.map(&:to_s).include?('background') || @properties.keys.map(&:to_s).include?('background_pattern')
end

#has_some_foreground? ⇒ Boolean

Returns:

  • (Boolean) 


294
295
296
 
# File 'lib/glimmer/swt/custom/shape.rb', line 294

def has_some_foreground?
  @properties.keys.map(&:to_s).include?('foreground') || @properties.keys.map(&:to_s).include?('foreground_pattern')
end

#height_delta ⇒ Object 



1094
1095
1096
1097
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1094

def height_delta
  return 0 unless height.is_a?(Array) && (default_height? || max_height?)
  height[1].to_f
end

#height_delta=(delta) ⇒ Object 



1117
1118
1119
1120
1121
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1117

def height_delta=(delta)
  return unless default_height?
  symbol = height.is_a?(Array) ? height.first : height
  self.height = [symbol, delta]
end

#include?(x, y) ⇒ Boolean

Returns if shape includes a point. When the shape is filled, this is the same as contain. When the shape is drawn, it only returns true if the point lies on the edge (boundary/border) Subclasses (like polygon) may override to indicate if a point x,y coordinates falls on the edge of a drawn shape or inside a filled shape some shapes may choose to provide a fuzz factor to make usage of this method for mouse clicking more user friendly

Returns:

  • (Boolean) 


216
217
218
219
 
# File 'lib/glimmer/swt/custom/shape.rb', line 216

def include?(x, y)
  # assume a rectangular shape by default
  contain?(x, y)
end

#inspect(recursive: 1, calculated: false, args: true, properties: true, calculated_args: false) ⇒ Object

Overriding inspect to avoid printing very long nested shape hierarchies (recurses onces only)



1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1175

def inspect(recursive: 1, calculated: false, args: true, properties: true, calculated_args: false)
  recurse = recursive == true || recursive.is_a?(Integer) && recursive.to_i > 0
  recursive = [recursive -= 1, 0].max if recursive.is_a?(Integer)
  args_string = " args=#{@args.inspect}" if args
  properties_string = " properties=#{@properties.inspect}}" if properties
  calculated_args_string = " calculated_args=#{@calculated_args.inspect}" if calculated_args
  calculated_string = " absolute_x=#{absolute_x} absolute_y=#{absolute_y} calculated_width=#{calculated_width} calculated_height=#{calculated_height}" if calculated
  recursive_string = " shapes=#{@shapes.map {|s| s.inspect(recursive: recursive, calculated: calculated, args: args, properties: properties)}}" if recurse
  "#<#{self.class.name}:0x#{self.hash.to_s(16)}#{args_string}#{properties_string}#{calculated_args_string}#{calculated_string}#{recursive_string}>"
rescue => e
  Glimmer::Config.logger.error { e.full_message }
  "#<#{self.class.name}:0x#{self.hash.to_s(16)}"
end

#irregular? ⇒ Boolean

Indicates if a shape’s x, y, width, height differ from its bounds calculation (e.g. arc / polygon)

Returns:

  • (Boolean) 


222
223
224
 
# File 'lib/glimmer/swt/custom/shape.rb', line 222

def irregular?
  false
end

#location ⇒ Object

The bounding box top-left x and y



186
187
188
 
# File 'lib/glimmer/swt/custom/shape.rb', line 186

def location
  org.eclipse.swt.graphics.Point.new(bounds.x, bounds.y)
end

#location_parameter_names ⇒ Object

subclasses may override to specify location parameter names if different from x and y (e.g. all polygon points are location parameters) used in calculating movement changes



475
476
477
 
# File 'lib/glimmer/swt/custom/shape.rb', line 475

def location_parameter_names
  [:x, :y]
end

#max_height ⇒ Object 



1045
1046
1047
1048
1049
1050
1051
1052
1053
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1045

def max_height
  max_height_dependencies = [parent.is_a?(Drawable) && parent.size.y, !parent.is_a?(Drawable) && parent.calculated_height]
  if max_height_dependencies != @max_height_dependencies
    # do not repeat calculations
    parent_size_y, parent_calculated_height = @max_height_dependencies = max_height_dependencies
    @max_height = parent.is_a?(Drawable) ? parent_size_y : parent_calculated_height
  end
  @max_height
end

#max_height? ⇒ Boolean

Returns:

  • (Boolean) 


950
951
952
953
954
 
# File 'lib/glimmer/swt/custom/shape.rb', line 950

def max_height?
  return false unless current_parameter_name?(:height)
  height = self.height
  (height.nil? || height.to_s == 'max' || (height.is_a?(Array) && height.first.to_s == 'max'))
end

#max_width ⇒ Object 



1035
1036
1037
1038
1039
1040
1041
1042
1043
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1035

def max_width
  max_width_dependencies = [parent.is_a?(Drawable) && parent.size.x, !parent.is_a?(Drawable) && parent.calculated_width]
  if max_width_dependencies != @max_width_dependencies
    # do not repeat calculations
    parent_size_x, parent_calculated_width = @max_width_dependencies = max_width_dependencies
    @max_width = parent.is_a?(Drawable) ? parent_size_x : parent_calculated_width
  end
  @max_width
end

#max_width? ⇒ Boolean

Returns:

  • (Boolean) 


944
945
946
947
948
 
# File 'lib/glimmer/swt/custom/shape.rb', line 944

def max_width?
  return false unless current_parameter_name?(:width)
  width = self.width
  (width.nil? || width.to_s == 'max' || (width.is_a?(Array) && width.first.to_s == 'max'))
end

#move_by(x_delta, y_delta) ⇒ Object Also known as: translate

moves by x delta and y delta. Subclasses must implement provdies a default implementation that assumes moving x and y is sufficient by default (not for polygons though, which must override)



228
229
230
231
232
233
234
235
236
237
238
239
240
241
 
# File 'lib/glimmer/swt/custom/shape.rb', line 228

def move_by(x_delta, y_delta)
  if respond_to?(:x) && respond_to?(:y) && respond_to?(:x=) && respond_to?(:y=)
    if default_x?
      self.x_delta += x_delta
    else
      self.x += x_delta
    end
    if default_y?
      self.y_delta += y_delta
    else
      self.y += y_delta
    end
  end
end

#paint(paint_event) ⇒ Object 



734
735
736
737
738
739
740
741
742
743
 
# File 'lib/glimmer/swt/custom/shape.rb', line 734

def paint(paint_event)
  paint_children(paint_event) if default_width? || default_height?
  paint_self(paint_event)
  # re-paint children from scratch in the special case of pre-calculating parent width/height to re-center within new parent dimensions
  shapes.each(&:calculated_args_changed!) if default_width? || default_height?
  paint_children(paint_event)
rescue => e
  Glimmer::Config.logger.error {"Error encountered in painting shape (#{self.inspect}) with calculated args (#{@calculated_args}) and args (#{@args})"}
  Glimmer::Config.logger.error {e.full_message}
end

#paint_children(paint_event) ⇒ Object 



776
777
778
779
780
 
# File 'lib/glimmer/swt/custom/shape.rb', line 776

def paint_children(paint_event)
  shapes.to_a.each do |shape|
    shape.paint(paint_event)
  end
end

#paint_self(paint_event) ⇒ Object 



745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
 
# File 'lib/glimmer/swt/custom/shape.rb', line 745

def paint_self(paint_event)
  @painting = true
  unless container?
    calculate_paint_args!
    @original_gc_properties = {} # this stores GC properties before making calls to updates TODO avoid using in pixel graphics
    @properties.each do |property, args|
      method_name = attribute_setter(property)
      @original_gc_properties[method_name] = paint_event.gc.send(method_name.sub('set', 'get')) rescue nil
      paint_event.gc.send(method_name, *args)
      if property == 'transform' && args.first.is_a?(TransformProxy)
        args.first.swt_transform.dispose
      end
    end
    ensure_extent(paint_event)
  end
  @calculated_args ||= calculate_args!
  unless container?
    # paint unless parent's calculated args are not calculated yet, meaning it is about to get painted and trigger a paint on this child anyways
    paint_event.gc.send(@method_name, *@calculated_args) unless (parent.is_a?(Shape) && !parent.calculated_args?)
    @original_gc_properties.each do |method_name, value|
      paint_event.gc.send(method_name, value)
    end
  end
  @painting = false
rescue => e
  Glimmer::Config.logger.error {"Error encountered in painting shape (#{self.inspect}) with method (#{@method_name}) calculated args (#{@calculated_args}) and args (#{@args})"}
  Glimmer::Config.logger.error {e.full_message}
ensure
  @painting = false
end

#parameter_index(attribute_name) ⇒ Object 



491
492
493
 
# File 'lib/glimmer/swt/custom/shape.rb', line 491

def parameter_index(attribute_name)
  parameter_names.index(attribute_name.to_s.to_sym)
end

#parameter_name?(attribute_name) ⇒ Boolean

Returns:

  • (Boolean) 


483
484
485
 
# File 'lib/glimmer/swt/custom/shape.rb', line 483

def parameter_name?(attribute_name)
  possible_parameter_names.map(&:to_s).include?(ruby_attribute_getter(attribute_name))
end

#parameter_names ⇒ Object

parameter names for arguments to pass to SWT GC.xyz method for rendering shape (e.g. draw_image(image, x, y) yields :image, :x, :y parameter names)



469
470
471
 
# File 'lib/glimmer/swt/custom/shape.rb', line 469

def parameter_names
  [:x, :y, :width, :height]
end

#parent_shape_composites ⇒ Object

ordered from closest to farthest parent



701
702
703
704
705
706
707
708
709
710
711
712
 
# File 'lib/glimmer/swt/custom/shape.rb', line 701

def parent_shape_composites
  if @parent_shape_composites.nil?
    if parent.is_a?(Drawable)
      @parent_shape_composites = []
    elsif !parent.container?
      @parent_shape_composites = parent.parent_shape_composites
    else
      @parent_shape_composites = parent.parent_shape_composites + [parent]
    end
  end
  @parent_shape_composites
end

#parent_shape_containers ⇒ Object

ordered from closest to farthest parent



687
688
689
690
691
692
693
694
695
696
697
698
 
# File 'lib/glimmer/swt/custom/shape.rb', line 687

def parent_shape_containers
  if @parent_shape_containers.nil?
    if parent.is_a?(Drawable)
      @parent_shape_containers = []
    elsif !parent.container?
      @parent_shape_containers = parent.parent_shape_containers
    else
      @parent_shape_containers = parent.parent_shape_containers + [parent]
    end
  end
  @parent_shape_containers
end

#parent_shapes ⇒ Object

ordered from closest to farthest parent



675
676
677
678
679
680
681
682
683
684
 
# File 'lib/glimmer/swt/custom/shape.rb', line 675

def parent_shapes
  if @parent_shapes.nil?
    if parent.is_a?(Drawable)
      @parent_shapes = []
    else
      @parent_shapes = parent.parent_shapes + [parent]
    end
  end
  @parent_shapes
end

#pattern(*args, type: nil) ⇒ Object 



613
614
615
616
617
618
619
620
 
# File 'lib/glimmer/swt/custom/shape.rb', line 613

def pattern(*args, type: nil)
  instance_variable_name = "@#{type}_pattern"
  the_pattern = instance_variable_get(instance_variable_name)
  if the_pattern.nil? || the_pattern.is_disposed
    the_pattern = self.class.pattern(*args)
  end
  the_pattern
end

#pattern_args(type: nil) ⇒ Object 



622
623
624
 
# File 'lib/glimmer/swt/custom/shape.rb', line 622

def pattern_args(type: nil)
  @pattern_args && @pattern_args[type.to_s.capitalize]
end

#possible_parameter_names ⇒ Object 



479
480
481
 
# File 'lib/glimmer/swt/custom/shape.rb', line 479

def possible_parameter_names
  parameter_names
end

#post_add_content ⇒ Object 



298
299
300
301
302
303
304
 
# File 'lib/glimmer/swt/custom/shape.rb', line 298

def post_add_content
  amend_method_name_options_based_on_properties!
  if !@content_added || @method_name != @original_method_name
    @drawable.setup_shape_painting unless @drawable.is_a?(ImageProxy)
    @content_added = true
  end
end

#respond_to?(method_name, *args, &block) ⇒ Boolean

Returns:

  • (Boolean) 


603
604
605
606
607
608
609
610
611
 
# File 'lib/glimmer/swt/custom/shape.rb', line 603

def respond_to?(method_name, *args, &block)
  options = args.last if args.last.is_a?(Hash)
  super_invocation = options && options[:super]
  if !super_invocation && has_attribute?(method_name)
    true
  else
    super
  end
end

#rotate(angle) ⇒ Object

rotates shape for an angle around its center this operation is not cumulative (it resets angle every time) consumers may inspect corresponding rotation_angle attribute to know which angle the shape is currently at for convenience this overrides any pre-existing transforms that are applied to shape



248
249
250
251
252
253
 
# File 'lib/glimmer/swt/custom/shape.rb', line 248

def rotate(angle)
  half_width = calculated_width/2.0
  half_height = calculated_height/2.0
  self.transform = Glimmer::SWT::TransformProxy.new(self).translate(half_width, half_height).rotate(angle).translate(-1.0*half_width, -1.0*half_height)
  @rotation_angle = angle
end

#rotation_angle ⇒ Object

returns rotation angle consumers may inspect rotation_angle attribute to know which angle the shape is rotated at via rotate method it is not guaranteed to give the right result if a transform is applied outside of rotate method. starts at 0



259
260
261
 
# File 'lib/glimmer/swt/custom/shape.rb', line 259

def rotation_angle
  @rotation_angle.to_f
end

#round? ⇒ Boolean

Returns:

  • (Boolean) 


170
171
172
 
# File 'lib/glimmer/swt/custom/shape.rb', line 170

def round?
  @options[:round]
end

#set_attribute(attribute_name, *args) ⇒ Object 



509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
 
# File 'lib/glimmer/swt/custom/shape.rb', line 509

def set_attribute(attribute_name, *args)
  options = args.last if args.last.is_a?(Hash)
  args.pop if !options.nil? && !options[:redraw].nil?
  perform_redraw = @perform_redraw
  perform_redraw = options[:redraw] if perform_redraw.nil? && !options.nil?
  perform_redraw ||= true
  property_change = nil
  ruby_attribute_getter_name = ruby_attribute_getter(attribute_name)
  ruby_attribute_setter_name = ruby_attribute_setter(attribute_name)
  if parameter_name?(attribute_name)
    return if ruby_attribute_getter_name == (args.size == 1 ? args.first : args)
    set_parameter_attribute(ruby_attribute_getter_name, *args)
  elsif (respond_to?(attribute_name, super: true) and respond_to?(ruby_attribute_setter_name, super: true))
    return if self.send(ruby_attribute_getter_name) == (args.size == 1 ? args.first : args)
    self.send(ruby_attribute_setter_name, *args)
  else
    # TODO consider this optimization of preconverting args (removing conversion from other methods) to reject equal args
    args = apply_property_arg_conversions(ruby_attribute_getter_name, args)
    return if @properties[ruby_attribute_getter_name] == args
    new_property = !@properties.keys.include?(ruby_attribute_getter_name)
    @properties[ruby_attribute_getter_name] = args
    amend_method_name_options_based_on_properties! if @content_added && new_property
    property_change = true
  end
  if @content_added && perform_redraw && !drawable.is_disposed
    redrawn = false
    unless property_change
      @calculated_paint_args = false
      if is_a?(PathSegment)
        root_path&.calculated_path_args = @calculated_path_args = false
        calculated_args_changed!
        root_path&.calculated_args_changed!
      end
      if location_parameter_names.map(&:to_s).include?(ruby_attribute_getter_name)
        calculated_args_changed!(children: true)
        redrawn = parent.calculated_args_changed_for_defaults! if parent.is_a?(Shape)
      end
      if ['width', 'height'].include?(ruby_attribute_getter_name)
        redrawn = calculated_args_changed_for_defaults!
      end
    end
    # TODO consider redrawing an image proxy's gc in the future
    # TODO consider ensuring only a single redraw happens for a hierarchy of nested shapes
    drawable.redraw unless redrawn || drawable.is_a?(ImageProxy)
  end
end

#set_data(key = nil, value) ⇒ Object Also known as: setData

Sets data just like SWT widgets



579
580
581
582
 
# File 'lib/glimmer/swt/custom/shape.rb', line 579

def set_data(key=nil, value)
  @data ||= {}
  @data[key] = value
end

#set_parameter_attribute(attribute_name, *args) ⇒ Object 



499
500
501
 
# File 'lib/glimmer/swt/custom/shape.rb', line 499

def set_parameter_attribute(attribute_name, *args)
  @args[parameter_index(ruby_attribute_getter(attribute_name))] = args.size == 1 ? args.first : args
end

#size ⇒ Object

The bounding box width and height (as a Point object with x being width and y being height)



191
192
193
194
195
196
197
198
199
 
# File 'lib/glimmer/swt/custom/shape.rb', line 191

def size
  size_dependencies = [calculated_width, calculated_height]
  if size_dependencies != @size_dependencies
    # avoid repeating calculations
    calculated_width, calculated_height = @size_dependencies = size_dependencies
    @size = org.eclipse.swt.graphics.Point.new(calculated_width, calculated_height)
  end
  @size
end

#tolerate_shape_extra_args! ⇒ Object

Tolerates shape extra args added by user by mistake (e.g. happens when switching from round rectangle to a standard one without removing all extra args)



442
443
444
445
446
447
448
449
 
# File 'lib/glimmer/swt/custom/shape.rb', line 442

def tolerate_shape_extra_args!
  the_java_method_arg_count = org.eclipse.swt.graphics.GC.java_class.declared_instance_methods.select do |m|
    m.name == @method_name.camelcase(:lower)
  end.map(&:parameter_types).map(&:size).max
  if the_java_method_arg_count && @args.to_a.size > the_java_method_arg_count
    @args[the_java_method_arg_count..-1] = []
  end
end

#width_delta ⇒ Object 



1089
1090
1091
1092
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1089

def width_delta
  return 0 unless width.is_a?(Array) && (default_width? || max_width?)
  width[1].to_f
end

#width_delta=(delta) ⇒ Object 



1111
1112
1113
1114
1115
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1111

def width_delta=(delta)
  return unless default_width?
  symbol = width.is_a?(Array) ? width.first : width
  self.width = [symbol, delta]
end

#x_delta ⇒ Object 



1079
1080
1081
1082
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1079

def x_delta
  return 0 unless x.is_a?(Array) && default_x?
  x[1].to_f
end

#x_delta=(delta) ⇒ Object 



1099
1100
1101
1102
1103
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1099

def x_delta=(delta)
  return unless default_x?
  symbol = x.is_a?(Array) ? x.first : x
  self.x = [symbol, delta]
end

#x_end ⇒ Object

right-most x coordinate in this shape (adding up its width and location)



978
979
980
981
982
983
984
985
986
987
988
 
# File 'lib/glimmer/swt/custom/shape.rb', line 978

def x_end
  x_end_dependencies = [calculated_width, default_x?, !default_x? && x]
  if x_end_dependencies != @x_end_dependencies
    # avoid recalculation of dependencies
    calculated_width, is_default_x, x = @x_end_dependencies = x_end_dependencies
    shape_width = calculated_width.to_f
    shape_x = is_default_x ? 0 : x.to_f
    @x_end = shape_x + shape_width
  end
  @x_end
end

#y_delta ⇒ Object 



1084
1085
1086
1087
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1084

def y_delta
  return 0 unless y.is_a?(Array) && default_y?
  y[1].to_f
end

#y_delta=(delta) ⇒ Object 



1105
1106
1107
1108
1109
 
# File 'lib/glimmer/swt/custom/shape.rb', line 1105

def y_delta=(delta)
  return unless default_y?
  symbol = y.is_a?(Array) ? y.first : y
  self.y = [symbol, delta]
end

#y_end ⇒ Object

bottom-most y coordinate in this shape (adding up its height and location)



991
992
993
994
995
996
997
998
999
1000
1001
 
# File 'lib/glimmer/swt/custom/shape.rb', line 991

def y_end
  y_end_dependencies = [calculated_height, default_y?, !default_y? && y]
  if y_end_dependencies != @y_end_dependencies
    # avoid recalculation of dependencies
    calculated_height, is_default_y, y = @y_end_dependencies = y_end_dependencies
    shape_height = calculated_height.to_f
    shape_y = is_default_y ? 0 : y.to_f
    @y_end = shape_y + shape_height
  end
  @y_end
end