问题描述
我在Gtk TreeView(GTK3的Python绑定)的其中一列中加载文件或显示颜色时遇到困难.从QGIS中获取的示例在第一行中显示一个图标,在第二行中显示一个蓝色圆圈.颜色来自图层属性:
I am having difficulty loading a file or displaying a colour in one of the columns of a Gtk TreeView (Python binding of GTK3). An example taken from QGIS shows a icon in the first row and a blue circle in the second row. The colour is taken from the layer properties:
我的代码如下所示,但是没有将icon.png文件加载到同一目录中:
My code looks like this but does not load the icon.png file in the same directory:
#!/usr/bin/python3
from gi.repository import Gtk, Gdk, GdkPixbuf
class MyWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self)
self.set_default_size(200, 200)
self.liststore = Gtk.ListStore(GdkPixbuf.Pixbuf, str)
self.treeview = Gtk.TreeView(model=self.liststore)
symbol1 = GdkPixbuf.Pixbuf.new_from_file("icon.png")
self.liststore.append([symbol1, "This is a symbol1"])
symbol2 = Gtk.IconTheme.get_default().load_icon("gtk-cut", 64, 0)
self.liststore.append([symbol2, "This is symbol2"])
px_renderer = Gtk.CellRendererPixbuf()
px_column = Gtk.TreeViewColumn("Icon", px_renderer)
self.treeview.append_column(px_column)
str_renderer = Gtk.CellRendererText()
str_column = Gtk.TreeViewColumn("Name", str_renderer, text=1)
self.treeview.append_column(str_column)
self.add(self.treeview)
win = MyWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
GTK3 pixbuf的文档在这里:
The documentation for GTK3 pixbuf is here:
PyGTK的旧示例在这里,但是在处理方式上确实发生了一些变化:
Older examples for PyGTK are here, but something has really changed in how this is handled:
- http://faq.pygtk.org/index.py?file=faq13.006.htp&req=show
- http://www.daa.com.au/pipermail/pygtk/2003-August/005644.html
- http://faq.pygtk.org/index.py?file=faq13.006.htp&req=show
- http://www.daa.com.au/pipermail/pygtk/2003-August/005644.html
推荐答案
此问题可以与PyGTK2.0相似地解决,您需要在TreeViewColumn
的一个对象上附加CellRendererText
和CellRendererPixbuf
的两个对象,然后然后调用列的 set_cell_data_func
方法来设置单元格的数据返回器功能.这是非常小的复杂(请参见下面的代码):
This problem can resolve similar as PyGTK2.0, you need to attach two objects of CellRendererText
and CellRendererPixbuf
on the one object of TreeViewColumn
and then call set_cell_data_func
method of column to set data returner function of cells.this is tiny complex(see below code):
from gi.repository import Gtk, Gdk, GdkPixbuf
class MyWindow(Gtk.Window):
def __init__(self):
Gtk.Window.__init__(self)
self.set_default_size(200, 200)
self.liststore = Gtk.ListStore(str, str)
self.treeview = Gtk.TreeView(model=self.liststore)
self.liststore.append(["icon.png", "This is a symbol1"])
px_renderer = Gtk.CellRendererPixbuf()
px_column = Gtk.TreeViewColumn('')
px_column.pack_start(px_renderer, False)
str_renderer = Gtk.CellRendererText()
px_column.pack_start(str_renderer, False)
# set data connector function/method
px_column.set_cell_data_func(px_renderer, self.get_tree_cell_pixbuf)
px_column.set_cell_data_func(str_renderer, self.get_tree_cell_text)
self.treeview.append_column(px_column)
self.add(self.treeview)
def get_tree_cell_text(self, col, cell, model, iter, user_data):
cell.set_property('text', model.get_value(iter, 1))
def get_tree_cell_pixbuf(self, col, cell, model, iter, user_data):
cell.set_property('pixbuf', GdkPixbuf.Pixbuf.new_from_file(model.get_value(iter, 0)))
if __name__ == '__main__':
win = MyWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()
您可以使用有关 TreeViewColumn.set_cell_data_func
方法并阅读有关 和PyGTK2.0的特殊属性,这些属性可以在PyGTK的第3版中使用:)
you can use documents of pygtk2.0 about TreeViewColumn.set_cell_data_func
method and read important page about CellRenderers
and special properties of PyGTK2.0 that can useful on version 3 of PyGTK :)
这篇关于在Gtk TreeView树中显示图标或颜色的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!