Changes between Version 5 and Version 6 of PyGTK

Timestamp:

07/23/06 00:39:47 (19 years ago)

Author:

atzm

Comment:

--

PyGTK

@@ -67 +67 @@
                                 'hogehoge', 'tag_name')
 }}}
+
+== !TextView 内にハイパーリンク的なものを作ってみる ==
+DnD は未実装．
+
+{{{
+#!python
+#!/usr/bin/env python
+
+import gtk
+import gobject
+import pango
+
+class HyperTextView(gtk.TextView):
+    __gtype_name__ = 'HyperTextView'
+    __gsignals__ = {
+        'anchor-clicked': (gobject.SIGNAL_RUN_LAST, None, (str, str, int)),
+        }
+    __gproperties__ = {
+        'link':  (gobject.TYPE_PYOBJECT, 'link color', 'link color of TextView', gobject.PARAM_READWRITE),
+        'active':(gobject.TYPE_PYOBJECT, 'active color', 'active color of TextView', gobject.PARAM_READWRITE),
+        'hover': (gobject.TYPE_PYOBJECT, 'link:hover color', 'link:hover color of TextView', gobject.PARAM_READWRITE),
+        }
+    def do_get_property(self, prop):
+        try:
+            return getattr(self, prop.name)
+        except AttributeError:
+            raise AttributeError, 'unknown property %s' % prop.name
+    def do_set_property(self, prop, val):
+        if prop.name in self.__gproperties__.keys():
+            setattr(self, prop.name, val)
+        else:
+            raise AttributeError, 'unknown property %s' % prop.name
+
+    def __init__(self, buffer=None):
+        gtk.TextView.__init__(self, buffer)
+        self.link   = {'background': 'white', 'foreground': 'blue', 'underline': pango.UNDERLINE_SINGLE}
+        self.active = {'background': 'light gray', 'foreground': 'red', 'underline': pango.UNDERLINE_SINGLE}
+        self.hover  = {'background': 'light gray', 'foreground': 'blue', 'underline': pango.UNDERLINE_SINGLE}
+
+        self.set_editable(False)
+        self.set_cursor_visible(False)
+
+        self.__tags = []
+
+        self.connect('motion-notify-event', self._motion)
+        self.connect('focus-out-event', lambda w, e: self.get_buffer().get_tag_table().foreach(self.__tag_reset, e.window))
+
+    def insert(self, text, _iter=None):
+        b = self.get_buffer()
+        if _iter is None:
+            _iter = b.get_end_iter()
+        b.insert(_iter, text)
+
+    def insert_with_anchor(self, text, anchor=None, _iter=None):
+        b = self.get_buffer()
+        if _iter is None:
+            _iter = b.get_end_iter()
+        if anchor is None:
+            anchor = text
+
+        tag = b.create_tag(None, **self.get_property('link'))
+        tag.set_data('is_anchor', True)
+        tag.connect('event', self._tag_event, text, anchor)
+        self.__tags.append(tag)
+        b.insert_with_tags(_iter, text, tag)
+
+    def _motion(self, view, ev):
+        window = ev.window
+        x, y, _ = window.get_pointer()
+        x, y = view.window_to_buffer_coords(gtk.TEXT_WINDOW_TEXT, x, y)
+        tags = view.get_iter_at_location(x, y).get_tags()
+        for tag in tags:
+            if tag.get_data('is_anchor'):
+                for t in set(self.__tags) - set([tag]):
+                    self.__tag_reset(t, window)
+                self.__set_anchor(window, tag, gtk.gdk.Cursor(gtk.gdk.HAND2), self.get_property('hover'))
+                break
+        else:
+            tag_table = self.get_buffer().get_tag_table()
+            tag_table.foreach(self.__tag_reset, window)
+
+    def _tag_event(self, tag, view, ev, _iter, text, anchor):
+        _type = ev.type
+        if _type == gtk.gdk.MOTION_NOTIFY:
+            return
+        elif _type in [gtk.gdk.BUTTON_PRESS, gtk.gdk.BUTTON_RELEASE]:
+            button = ev.button
+            cursor = gtk.gdk.Cursor(gtk.gdk.HAND2)
+            if _type == gtk.gdk.BUTTON_RELEASE:
+                self.emit('anchor-clicked', text, anchor, button)
+                self.__set_anchor(ev.window, tag, cursor, self.get_property('hover'))
+            elif button in [1, 2]:
+                self.__set_anchor(ev.window, tag, cursor, self.get_property('active'))
+
+    def __tag_reset(self, tag, window):
+        if tag.get_data('is_anchor'):
+            self.__set_anchor(window, tag, None, self.get_property('link'))
+
+    def __set_anchor(self, window, tag, cursor, prop):
+        window.set_cursor(cursor)
+        for key, val in prop.iteritems():
+            tag.set_property(key, val)
+
+gobject.type_register(HyperTextView)
+
+if __name__ == '__main__':
+    def clicked(widget, text, anchor, button):
+        print widget, text, anchor, button
+
+    t = HyperTextView()
+    t.connect('anchor-clicked', clicked)
+    t.link['foreground'] = 'dark blue'
+    t.insert_with_anchor('Google', 'http://www.google.com/')
+    t.insert('\n')
+    t.insert_with_anchor('Yahoo!', 'http://www.yahoo.com/')
+
+    w = gtk.Window()
+    w.set_default_size(200, 100)
+    w.connect('destroy', lambda w: gtk.main_quit())
+    w.add(t)
+
+    w.show_all()
+    gtk.main()
+}}}