Python GTK 拖放 - 获取 URL

2022-01-11 00:00:00 python gtk drag-and-drop gdk

问题描述

我正在创建一个小应用程序必须能够接收 URL.如果应用程序窗口打开，我应该能够从浏览器中拖动一个链接并将其拖放到应用程序中 - 应用程序会将 URL 保存到数据库中.

I'm creating a small app must be able to receive URLs. If the apps window is open, I should be able to drag a link from a browser and drop it into the app - and the app will save the URL to a database.

我正在 Python/GTk 中创建它.但我对其中的拖放功能有点困惑.那么，该怎么做呢?

I'm creating this in Python/GTk. But I am a bit confused about the drag and drop functionality in it. So, how do it?

一些实现拖放的示例代码(我的应用程序使用了一些此代码)...

Some sample code to implement drag/drop(my app uses a bit of this code)...

import pygtk
pygtk.require('2.0')
import gtk

# function to print out the mime type of the drop item
def drop_cb(wid, context, x, y, time):
    l.set_text('
'.join([str(t) for t in context.targets]))
    # What should I put here to get the URL of the link?

    context.finish(True, False, time)
    return True

# Create a GTK window and Label, and hook up
# drag n drop signal handlers to the window
w = gtk.Window()
w.set_size_request(200, 150)
w.drag_dest_set(0, [], 0)
w.connect('drag_drop', drop_cb)
w.connect('destroy', lambda w: gtk.main_quit())
l = gtk.Label()
w.add(l)
w.show_all()

# Start the program
gtk.main()

解决方案

您必须自己获取数据.这是一个简单的工作示例，它将为删除的 url 设置标签:

You must fetch the data yourself. Here's a simple working example that will set a label to the url dropped:

#!/usr/local/env python

import pygtk
pygtk.require('2.0')
import gtk

def motion_cb(wid, context, x, y, time):
    l.set_text('
'.join([str(t) for t in context.targets]))
    context.drag_status(gtk.gdk.ACTION_COPY, time)
    # Returning True which means "I accept this data".
    return True

def drop_cb(wid, context, x, y, time):
    # Some data was dropped, get the data
    wid.drag_get_data(context, context.targets[-1], time)
    return True

def got_data_cb(wid, context, x, y, data, info, time):
    # Got data.
    l.set_text(data.get_text())
    context.finish(True, False, time)

w = gtk.Window()
w.set_size_request(200, 150)
w.drag_dest_set(0, [], 0)
w.connect('drag_motion', motion_cb)
w.connect('drag_drop', drop_cb)
w.connect('drag_data_received', got_data_cb)
w.connect('destroy', lambda w: gtk.main_quit())
l = gtk.Label()
w.add(l)
w.show_all()

gtk.main()

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