Class: AGL::Button

Inherits:
Object
  • Object
show all
Defined in:
lib/minigl/forms.rb

Instance Method Summary collapse

Constructor Details

#initialize(x, y, font, text, img, text_color = 0, center = true, margin_x = 0, margin_y = 0, width = nil, height = nil, &action) ⇒ Button

Returns a new instance of Button.



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# File 'lib/minigl/forms.rb', line 5

def initialize x, y, font, text, img, text_color = 0, center = true, margin_x = 0, margin_y = 0, width = nil, height = nil, &action
	@x = x
	@y = y
	@font = font
	@text = text
	@img =
		if img; Res.imgs img, 1, 3, true
		else; nil; end
	@w =
		if img; @img[0].width
		else; width; end
	@h =
		if img; @img[0].height
		else; height; end
	if center
		@text_x = x + @w / 2
		@text_y = y + @h / 2
	else
		@text_x = x + margin_x
		@text_y = y + margin_y
	end
	@text_color = text_color
	@center = center
	@action = Proc.new &action

	@state = :up
	@img_index = 0
end

Instance Method Details

#click ⇒ Object 



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# File 'lib/minigl/forms.rb', line 72

def click
	@action.call
end

#draw(alpha = 0xff) ⇒ Object 



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# File 'lib/minigl/forms.rb', line 76

def draw alpha = 0xff
	color = (alpha << 24) | 0xffffff
	text_color = (alpha << 24) | @text_color
	@img[@img_index].draw @x, @y, 0, 1, 1, color if @img
	if @text
		if @center
			@font.draw_rel @text, @text_x, @text_y, 0, 0.5, 0.5, 1, 1, text_color
		else
			@font.draw @text, @text_x, @text_y, 0, 1, 1, text_color
		end
	end
end

#update ⇒ Object 



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# File 'lib/minigl/forms.rb', line 34

def update
	mouse_over = Mouse.over? @x, @y, @w, @h
	mouse_press = Mouse.button_pressed? :left
	mouse_rel = Mouse.button_released? :left
	
	if @state == :up
		if mouse_over
			@img_index = 1
			@state = :over
		end
	elsif @state == :over
		if not mouse_over
			@img_index = 0
			@state = :up
		elsif mouse_press
			@img_index = 2
			@state = :down
		end
	elsif @state == :down
		if not mouse_over
			@img_index = 0
			@state = :down_out
		elsif mouse_rel
			@img_index = 0
			@state = :up
			click
		end
	elsif @state == :down_out
		if mouse_over
			@img_index = 2
			@state = :down
		elsif mouse_rel
			@img_index = 0
			@state = :up
		end
	end
end