Class: Glimmer::SWT::Custom::Shape
- Inherits:
-
Object
- Object
- Glimmer::SWT::Custom::Shape
show all
- Includes:
- Packages, Properties
- Defined in:
- 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
Instance Attribute Summary collapse
Class Method Summary
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Instance Method Summary
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#amend_method_name_options_based_on_properties ⇒ Object
-
#apply_property_arg_conversions(method_name, property, args) ⇒ Object
-
#apply_shape_arg_conversions(method_name, args) ⇒ Object
-
#apply_shape_arg_defaults(method_name, args) ⇒ Object
-
#dispose ⇒ Object
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#draw? ⇒ Boolean
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#fill? ⇒ Boolean
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#get_attribute(attribute_name) ⇒ Object
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#gradient? ⇒ Boolean
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#has_attribute?(attribute_name, *args) ⇒ Boolean
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#has_some_background? ⇒ Boolean
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#has_some_foreground? ⇒ Boolean
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#initialize(parent, keyword, *args, &property_block) ⇒ Shape
constructor
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#paint(paint_event) ⇒ Object
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#pattern(*args, type: nil) ⇒ Object
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#post_add_content ⇒ Object
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#round? ⇒ Boolean
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#set_attribute(attribute_name, *args) ⇒ Object
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#setup_painting ⇒ Object
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#tolerate_shape_extra_args(method_name, 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).
Methods included from Properties
#attribute_getter, #attribute_setter, #normalized_attribute, #ruby_attribute_setter
Methods included from Packages
included
Constructor Details
#initialize(parent, keyword, *args, &property_block) ⇒ Shape
Returns a new instance of Shape.
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# File 'lib/glimmer/swt/custom/shape.rb', line 96
def initialize(parent, keyword, *args, &property_block)
@parent = parent
@name = keyword
@method_name = self.class.method_name(keyword, args)
@options = self.class.arg_options(args, extract: true)
@args = args
@properties = {}
@parent.shapes << self
post_add_content if property_block.nil?
end
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Instance Attribute Details
#args ⇒ Object
Returns the value of attribute args.
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# File 'lib/glimmer/swt/custom/shape.rb', line 94
def args
@args
end
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#name ⇒ Object
Returns the value of attribute name.
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# File 'lib/glimmer/swt/custom/shape.rb', line 94
def name
@name
end
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#options ⇒ Object
Returns the value of attribute options.
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# File 'lib/glimmer/swt/custom/shape.rb', line 94
def options
@options
end
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#paint_listener_proxy ⇒ Object
Returns the value of attribute paint_listener_proxy.
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# File 'lib/glimmer/swt/custom/shape.rb', line 94
def paint_listener_proxy
@paint_listener_proxy
end
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#parent ⇒ Object
Returns the value of attribute parent.
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# File 'lib/glimmer/swt/custom/shape.rb', line 94
def parent
@parent
end
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Class Method Details
.arg_options(args, extract: false) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 59
def arg_options(args, extract: false)
arg_options_method = ? :pop : :last
options = args.send(arg_options_method) if args.last.is_a?(Hash)
options.nil? ? {} : options.symbolize_keys
end
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.flyweigh_patterns ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 89
def flyweigh_patterns
@flyweigh_patterns ||= {}
end
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.flyweight_method_names ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 77
def flyweight_method_names
@flyweight_method_names ||= {}
end
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.gc_instance_methods ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 45
def gc_instance_methods
@gc_instance_methods ||= org.eclipse.swt.graphics.GC.instance_methods.map(&:to_s)
end
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.keywords ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 49
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
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.method_name(keyword, args) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 65
def method_name(keyword, args)
method_arg_options = arg_options(args)
unless flyweight_method_names.keys.include?([keyword, method_arg_options])
keyword = keyword.to_s
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}"
end
flyweight_method_names[[keyword, method_arg_options]]
end
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.pattern(*args) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 81
def pattern(*args)
found_pattern = flyweigh_patterns[args]
if found_pattern.nil? || found_pattern.is_disposed
found_pattern = flyweigh_patterns[args] = org.eclipse.swt.graphics.Pattern.new(*args)
end
found_pattern
end
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.valid?(parent, keyword, *args, &block) ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 41
def valid?(parent, keyword, *args, &block)
gc_instance_methods.include?(method_name(keyword, args))
end
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Instance Method Details
#amend_method_name_options_based_on_properties ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 209
def amend_method_name_options_based_on_properties
if has_some_background? && !has_some_foreground?
@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, @args + [@options])
end
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#apply_property_arg_conversions(method_name, property, args) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 137
def apply_property_arg_conversions(method_name, property, args)
args = args.dup
the_java_method = org.eclipse.swt.graphics.GC.java_class.declared_instance_methods.detect {|m| m.name == method_name}
if (args.first.is_a?(Symbol) || args.first.is_a?(String))
if the_java_method.parameter_types.first == Color.java_class
args[0] = ColorProxy.new(args[0])
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) && the_java_method.parameter_types.first == 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)
args.each_with_index do |arg, i|
if arg.is_a?(Symbol) || arg.is_a?(String)
args[i] = ColorProxy.new(arg).swt_color
elsif arg.is_a?(ColorProxy)
args[i] = arg.swt_color
end
end
new_args = [DisplayProxy.instance.swt_display] + args
args[0] = pattern(*new_args, type: method_name.to_s.match(/set(.+)Pattern/)[1])
args[1..-1] = []
end
args
end
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#apply_shape_arg_conversions(method_name, args) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 175
def apply_shape_arg_conversions(method_name, args)
if args.size > 1 && (method_name.include?('polygon') || method_name.include?('polyline'))
args[0] = args.dup
args[1..-1] = []
end
end
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#apply_shape_arg_defaults(method_name, args) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 182
def apply_shape_arg_defaults(method_name, args)
if method_name.include?('round_rectangle') && args.size.between?(4, 5)
(6 - args.size).times {args << 60}
elsif method_name.include?('rectangle') && gradient? && args.size == 4
args << true
elsif (method_name.include?('text') || method_name.include?('string')) && !@properties.keys.map(&:to_s).include?('background') && args.size == 3
args << true
end
if method_name.include?('image') && args.first.is_a?(String)
args[0] = ImageProxy.new(args[0])
end
if method_name.include?('image') && args.first.is_a?(ImageProxy)
@image = args[0] = args[0].swt_image
end
end
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#dispose ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 249
def dispose
paint_listener_proxy&.unregister
@background_pattern&.dispose
@background_pattern = nil
@foreground_pattern&.dispose
@foreground_pattern = nil
@image&.dispose
@image = nil
@parent.shapes.delete(self)
end
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#draw? ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 107
def draw?
!fill?
end
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#fill? ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 111
def fill?
@options[:fill]
end
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#get_attribute(attribute_name) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 236
def get_attribute(attribute_name)
@properties.symbolize_keys[attribute_name.to_s.to_sym]
end
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#gradient? ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 115
def gradient?
@options[:gradient]
end
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#has_attribute?(attribute_name, *args) ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 224
def has_attribute?(attribute_name, *args)
self.class.gc_instance_methods.include?(attribute_setter(attribute_name))
end
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#has_some_background? ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 123
def has_some_background?
@properties.keys.map(&:to_s).include?('background') || @properties.keys.map(&:to_s).include?('background_pattern')
end
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#has_some_foreground? ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 127
def has_some_foreground?
@properties.keys.map(&:to_s).include?('foreground') || @properties.keys.map(&:to_s).include?('foreground_pattern')
end
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#paint(paint_event) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 272
def paint(paint_event)
@properties['background'] = [@parent.background] if fill? && !has_some_background?
@properties['foreground'] = [@parent.foreground] if @parent.respond_to?(:foreground) && draw? && !has_some_foreground?
@properties['font'] = [@parent.font] if @parent.respond_to?(:font) && draw? && !@properties.keys.map(&:to_s).include?('font')
@properties['transform'] = [nil] if @parent.respond_to?(:transform) && !@properties.keys.map(&:to_s).include?('transform')
@properties.each do |property, args|
method_name = attribute_setter(property)
converted_args = apply_property_arg_conversions(method_name, property, args)
paint_event.gc.send(method_name, *converted_args)
if property == 'transform' && args.first.is_a?(TransformProxy)
args.first.swt_transform.dispose
end
end
apply_shape_arg_conversions(@method_name, @args)
apply_shape_arg_defaults(@method_name, @args)
(@method_name, @args)
paint_event.gc.send(@method_name, *@args)
end
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#pattern(*args, type: nil) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 240
def pattern(*args, type: nil)
instance_variable_name = "@#{type}_pattern"
the_pattern = instance_variable_get(instance_variable_name)
if the_pattern.nil?
the_pattern = self.class.pattern(*args)
end
the_pattern
end
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#post_add_content ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 131
def post_add_content
amend_method_name_options_based_on_properties
setup_painting
@content_added = true
end
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#round? ⇒ Boolean
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# File 'lib/glimmer/swt/custom/shape.rb', line 119
def round?
@options[:round]
end
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#set_attribute(attribute_name, *args) ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 228
def set_attribute(attribute_name, *args)
@properties[attribute_name] = args
if @content_added && !@parent.is_disposed
@parent.resetup_shape_painting
@parent.redraw
end
end
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#setup_painting ⇒ Object
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# File 'lib/glimmer/swt/custom/shape.rb', line 260
def setup_painting
return if @parent.is_disposed
if parent.respond_to?(:swt_display)
@paint_listener_proxy = @parent.on_swt_paint(&method(:paint))
elsif parent.respond_to?(:swt_image)
paint(parent) elsif parent.respond_to?(:swt_widget)
@paint_listener_proxy = @parent.on_paint_control(&method(:paint))
end
end
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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)
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# File 'lib/glimmer/swt/custom/shape.rb', line 200
def (method_name, 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 args.size > the_java_method_arg_count
args[the_java_method_arg_count..-1] = []
end
end
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