GtkTreeView 的限制高度

Question

我正在尝试为 GtkTreeView 设置高度限制，如果行数据超过此限制，我想使用滚动条。目前，整个 window 无限制地增长并在某些时候离开屏幕。需要什么才能获得所需的行为？

我的 Python 代码（它只是在每次单击按钮时向列表存储添加一个新行）：

#!/usr/bin/env python3

import gi
gi.require_version("Gtk", "3.0")
from gi.repository import Gtk

class MyApp:

    def on_window1_destroy(self, obj, data=None):
        Gtk.main_quit()

    def button1_clicked(self, object):
        liststore = self.builder.get_object("liststore1")
        print(self.window.get_default_size())
        liststore.append(("test",))

    def __init__(self):
        self.builder = Gtk.Builder()
        self.builder.add_from_file("table_test.glade")
        self.builder.connect_signals(self)
        self.window = self.builder.get_object("window1")
        self.window.show()

if __name__ == "__main__":
    main = MyApp()
    Gtk.main()

对应的Glade文件(test_table.glade):

<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.18.3 -->
<interface>
  <requires lib="gtk+" version="3.12"/>
  <object class="GtkListStore" id="liststore1">
    <columns>
      <!-- column-name column1 -->
      <column type="gchararray"/>
    </columns>
  </object>
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <property name="resizable">False</property>
    <property name="default_height">300</property>
    <signal name="destroy" handler="on_window1_destroy" swapped="no"/>
    <child>
      <object class="GtkGrid" id="grid1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <child>
          <object class="GtkButton" id="button1">
            <property name="label" translatable="yes">add</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="receives_default">True</property>
            <signal name="clicked" handler="button1_clicked" swapped="no"/>
          </object>
          <packing>
            <property name="left_attach">1</property>
            <property name="top_attach">0</property>
          </packing>
        </child>
        <child>
          <object class="GtkTreeView" id="treeview1">
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="model">liststore1</property>
            <child internal-child="selection">
              <object class="GtkTreeSelection" id="treeview-selection1"/>
            </child>
            <child>
              <object class="GtkTreeViewColumn" id="treeviewcolumn1">
                <property name="title" translatable="yes">test-column</property>
                <child>
                  <object class="GtkCellRendererText" id="cellrenderertext1"/>
                  <attributes>
                    <attribute name="text">0</attribute>
                  </attributes>
                </child>
              </object>
            </child>
          </object>
          <packing>
            <property name="left_attach">0</property>
            <property name="top_attach">0</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
</interface>

Answer 1

您不需要实现该小部件，它已经存在并且名为 Gtk.ScrolledWindow。滚动条行为可以是自动的（仅当内容超过分配的 space 时显示）。

这可以通过向您通过 glade 添加的 GtkTreeView 添加父小部件来实现。

如果您不希望按钮随 window 成比例地展开，那么您应该将 GtkButton 垂直对齐方式设置为开始（也在林间空地）。

下面是您的空地文件，其中添加了 Gtk.ScrolledWindow:

<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.19.0 -->
<interface>
  <requires lib="gtk+" version="3.12"/>
  <object class="GtkListStore" id="liststore1">
    <columns>
      <!-- column-name column1 -->
      <column type="gchararray"/>
    </columns>
  </object>
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <property name="default_height">300</property>
    <signal name="destroy" handler="on_window1_destroy" swapped="no"/>
    <child>
      <object class="GtkGrid" id="grid1">
        <property name="visible">True</property>
        <property name="can_focus">False</property>
        <property name="hexpand">True</property>
        <property name="vexpand">True</property>
        <child>
          <object class="GtkButton" id="button1">
            <property name="label" translatable="yes">add</property>
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="receives_default">True</property>
            <property name="halign">center</property>
            <property name="valign">start</property>
            <signal name="clicked" handler="button1_clicked" swapped="no"/>
          </object>
          <packing>
            <property name="left_attach">1</property>
            <property name="top_attach">0</property>
          </packing>
        </child>
        <child>
          <object class="GtkScrolledWindow" id="scrolledwindow1">
            <property name="visible">True</property>
            <property name="can_focus">True</property>
            <property name="hexpand">True</property>
            <property name="vexpand">True</property>
            <property name="shadow_type">in</property>
            <child>
              <object class="GtkTreeView" id="treeview1">
                <property name="visible">True</property>
                <property name="can_focus">True</property>
                <property name="hexpand">True</property>
                <property name="vexpand">True</property>
                <property name="model">liststore1</property>
                <child internal-child="selection">
                  <object class="GtkTreeSelection" id="treeview-selection1"/>
                </child>
                <child>
                  <object class="GtkTreeViewColumn" id="treeviewcolumn1">
                    <property name="title" translatable="yes">test-column</property>
                    <child>
                      <object class="GtkCellRendererText" id="cellrenderertext1"/>
                      <attributes>
                        <attribute name="text">0</attribute>
                      </attributes>
                    </child>
                  </object>
                </child>
              </object>
            </child>
          </object>
          <packing>
            <property name="left_attach">0</property>
            <property name="top_attach">0</property>
          </packing>
        </child>
      </object>
    </child>
  </object>
</interface>

结果应该与此类似：

GtkTreeView 的限制高度

Limit height of GtkTreeView

python

gtk

pygobject