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#!/usr/bin/env python
import pygtk
import gtk
import pango
import subprocess
import os
class ReleaseNotesViewer(gtk.TextView):
def __init__(self, notes):
gtk.TextView.__init__(self)
self.hovering = False
self.buffer = gtk.TextBuffer()
self.set_buffer(self.buffer)
self.buffer.set_text(notes)
self.connect("event-after", self.event_after)
self.connect("motion-notify-event", self.motion_notify_event)
self.connect("visibility-notify-event", self.visibility_notify_event)
self.search_links()
self.set_property("editable", False)
self.set_cursor_visible(False)
def tag_link(self, start, end, url):
tag = self.buffer.create_tag(None, foreground="blue",
underline=pango.UNDERLINE_SINGLE)
tag.set_data("url", url)
self.buffer.apply_tag(tag , start, end)
def search_links(self):
iter = self.buffer.get_iter_at_offset(0)
while 1:
ret = iter.forward_search("http://", gtk.TEXT_SEARCH_VISIBLE_ONLY,
None)
if not ret:
break
(match_start, match_end) = ret
match_tmp = match_end.copy()
while 1:
if match_tmp.forward_char():
text = match_end.get_text(match_tmp)
if text in (" ", ")", "]", "\n", "\t"):
break
else:
break
match_end = match_tmp.copy()
url = match_start.get_text(match_end)
self.tag_link(match_start, match_end, url)
iter = match_end
def event_after(self, text_view, event):
if event.type != gtk.gdk.BUTTON_RELEASE:
return False
if event.button != 1:
return False
try:
(start, end) = self.buffer.get_selection_bounds()
except ValueError:
pass
else:
if start.get_offset() != end.get_offset():
return False
(x, y) = self.window_to_buffer_coords(gtk.TEXT_WINDOW_WIDGET,
int(event.x), int(event.y))
iter = self.get_iter_at_location(x, y)
tags = iter.get_tags()
for tag in tags:
url = tag.get_data("url")
if url != "":
self.open_url(url)
break
def open_url(self, url):
if os.path.exists('usr/bin/gnome-open'):
command = ['gnome-open', url]
else:
command = ['x-www-browser', url]
if os.getuid() == 0 and os.environ.has_key('SUDO_USER'):
command = ['sudo', '-u', os.environ['SUDO_USER']] + command
subprocess.Popen(command)
def motion_notify_event(self, text_view, event):
x, y = text_view.window_to_buffer_coords(gtk.TEXT_WINDOW_WIDGET,
int(event.x), int(event.y))
self.check_hovering(x, y)
self.window.get_pointer()
return False
def visibility_notify_event(self, text_view, event):
(wx, wy, mod) = text_view.window.get_pointer()
(bx, by) = text_view.window_to_buffer_coords(gtk.TEXT_WINDOW_WIDGET, wx,
wy)
self.check_hovering(bx, by)
return False
def check_hovering(self, x, y):
_hovering = False
iter = self.get_iter_at_location(x, y)
tags = iter.get_tags()
for tag in tags:
url = tag.get_data("url")
if url != "":
_hovering = True
break
if _hovering != self.hovering:
self.hovering = _hovering
if self.hovering:
self.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(gtk.gdk.Cursor(gtk.gdk.HAND2))
else:
self.get_window(gtk.TEXT_WINDOW_TEXT).set_cursor(gtk.gdk.Cursor(gtk.gdk.XTERM))
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