Ruby GTK Pixbuf定时图像更改

问题描述

我使用gtk pixbuf加载图像，在ruby中创建图像幻灯片。我对ruby& GTK，这可能是一个愚蠢的问题。

I am creating an image slideshow in ruby, using gtk pixbuf to load images. I am very new to ruby & GTK, this may be an stupid question.

目前图像变化与GUI button_press_event相关联，我希望它们根据设置的时间自动更改/刷新，如幻灯片或动画。我看到使用gif方法的gtk动画，但我想使用单独的jpeg文件内联序列，以便我可以设置显示幻灯片的时间。循环遍历完所有图像后，GUI应显示重放或退出按钮。 （我还没有使用过@time，它只是有可能性）感谢您的任何建议;

Currently image changes are linked to the GUI button_press_event, I would like them to change /refresh automatically based on a set time, like a slideshow or animation. I saw the gtk animation using a gif method, but I would like to use individual jpeg files inline sequence, so that I can set the time to show a slide. Once the loop has gone through all the images, the GUI should display buttons for replay or quit. ( I haven't used @time yet, it is just there for possibilities ) Thanks for any suggestions;

require 'gtk2'

class Pics
  attr_accessor :pile, :picindex, :imgLoaded, :image, :box, :window, :time

def initialize
  @window = Gtk::Window.new()
  @window.signal_connect("destroy"){Gtk.main_quit}
  pic1 = "1.jpg"
  pic2 = "2.jpg"
  pic3 = "3.jpg"
  pic4 = "4.jpg"
  @pile = [pic1, pic2, pic3, pic4]
  @picindex = 0
  self.getImage
  @box = Gtk::EventBox.new.add(@image)
  @time = true
end

def nuImage
  @box.remove(@image)
  @picindex = @picindex + 1
  @picindex = 0 if @picindex == @pile.length
  self.getImage
  @box.add(@image)
  @box.show
end

def getImage
  @imgLoaded = @pile[@picindex]
  img = Gdk::Pixbuf.new(@imgLoaded, 556, 900)
  @image = Gtk::Image.new(img)
  @image.show
end

end # class Pics

pics = Pics.new
  pics.box.signal_connect("button_press_event"){pics.nuImage}
  pics.window.set_default_size(556, 900)
  pics.window.add(pics.box)
  pics.window.show_all

Gtk.main

推荐答案

使用GLib.timeout_add（）或GLib.timeout_add_seconds（）。如果您不想再使用它，请返回False。阅读GLib文档，部分：主要事件循环

use GLib.timeout_add () or GLib.timeout_add_seconds (). Return False if you don't want to use it anymore.read GLib documentation, Section: Main Event Loop

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