Кнопка должна иметь черную рамку вокруг нее, когда указатель мыши перемещается над ней, чтобы выделить ее - PullRequest
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Кнопка должна иметь черную рамку вокруг нее, когда указатель мыши перемещается над ней, чтобы выделить ее

0 голосов
/ 14 мая 2019

Кнопка должна быть выделена, когда мышь перемещается над ней (т.е. он должен иметь черную рамку вокруг снаружи) Вот как должна выглядеть граница, когда мышь перемещается вокруг нее. Кнопка Должен отображать цветную рамку, которая «подсвечивает» кнопку при наведении на нее мыши 

module ZOrder
  BACKGROUND, MIDDLE, TOP = *0..2
end

# Global constants
WIN_WIDTH = 640
WIN_HEIGHT = 400

class DemoWindow < Gosu::Window

  # set up variables and attributes
  def initialize
    super(WIN_WIDTH, WIN_HEIGHT, false)
    @background = Gosu::Color::WHITE
    @button_font = Gosu::Font.new(20)
    @info_font = Gosu::Font.new(10)
    @locs = [60,60]
  end

  # Draw the background, the button with 'click me' text and text
  # showing the mouse coordinates
  def draw
    # Draw background color
    Gosu.draw_rect(0, 0, WIN_WIDTH, WIN_HEIGHT, @background, ZOrder::BACKGROUND, mode=:default)
    # Draw the button
    Gosu.draw_rect(50, 50, 100, 50, Gosu::Color::GREEN, ZOrder::TOP, mode=:default)
    # Draw the button text
    @button_font.draw("Click me", 93, 73, ZOrder::MIDDLE, 1.0, 1.0, Gosu::Color::BLACK)
    # Draw the mouse position information
    @info_font.draw_markup("mouse_x: #{@locs[0]}", 0, 350, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)
    @info_font.draw_markup("mouse_y: #{@locs[1]}", 0, 370, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)
  end



  # this is called by Gosu to see if should show the cursor (or mouse)
  def needs_cursor?
    true
  end

  # If the button area (rectangle) has been clicked on change the background color
  # also store the mouse_x and mouse_y attributes that we 'inherit' from Gosu
  # you will learn about inheritance in the OOP unit - for now just accept that
  # these are available and filled with the latest x and y locations of the mouse click.

  def mouse_over_button(mouse_x, mouse_y)
    mouse_x.between?(50, 150) && mouse_y.between?(50, 100)
  end

  # Where is mouse_x and mouse_y defined

  def button_down(id)
    case id
    when Gosu::MsLeft
      @locs = [mouse_x, mouse_y]
      if mouse_over_button(mouse_x, mouse_y)
        @background = Gosu::Color::YELLOW
      else
        @background = Gosu::Color::WHITE
      end
    end
  end
end

# Lets get started!
DemoWindow.new.show

1 Ответ

0 голосов
/ 14 мая 2019

Если вы хотите изменить цвет фона при наведении мыши, вы должны переместить свой код изменения цвета с button_down на новый update метод, например: 

class DemoWindow < Gosu::Window

  # set up variables and attributes
  def initialize
    super(WIN_WIDTH, WIN_HEIGHT, false)
    @background = Gosu::Color::WHITE
    @button_font = Gosu::Font.new(20)
    @info_font = Gosu::Font.new(10)
    @locs = [60,60]
  end

  # Draw the background, the button with 'click me' text and text
  # showing the mouse coordinates
  def draw
    # Draw background color
    Gosu.draw_rect(0, 0, WIN_WIDTH, WIN_HEIGHT, @background, ZOrder::BACKGROUND, mode=:default)
    # Draw the button
    Gosu.draw_rect(50, 50, 100, 50, Gosu::Color::GREEN, ZOrder::TOP, mode=:default)
    # Draw the button text
    @button_font.draw("Click me", 93, 73, ZOrder::MIDDLE, 1.0, 1.0, Gosu::Color::BLACK)
    # Draw the mouse position information
    @info_font.draw_markup("mouse_x: #{@locs[0]}", 0, 350, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)
    @info_font.draw_markup("mouse_y: #{@locs[1]}", 0, 370, ZOrder::TOP, 1.0, 1.0, Gosu::Color::BLACK)
  end



  # this is called by Gosu to see if should show the cursor (or mouse)
  def needs_cursor?
    true
  end

  # If the button area (rectangle) has been clicked on change the background color
  # also store the mouse_x and mouse_y attributes that we 'inherit' from Gosu
  # you will learn about inheritance in the OOP unit - for now just accept that
  # these are available and filled with the latest x and y locations of the mouse click.

  def mouse_over_button(mouse_x, mouse_y)
    mouse_x.between?(50, 150) && mouse_y.between?(50, 100)
  end


 # <----------- ADD THIS METHOD ----------->
    def update
      if mouse_over_button(mouse_x, mouse_y)
        @background = Gosu::Color::YELLOW
      else
        @background = Gosu::Color::WHITE
     end
    end


  # Where is mouse_x and mouse_y defined

  def button_down(id)
    case id
    when Gosu::MsLeft
      @locs = [mouse_x, mouse_y]
    end
  end
end

# Lets get started!
DemoWindow.new.show
...