Gtk3 FileChooserDialog 高度异常与调整大小故障的排查及修复咨询

各位好，我在Ubuntu 24.04.3（GNOME Shell 46版本）上使用Gtk3的Gtk.FileChooserDialog组件时遇到了挺奇怪的问题，想请教下大家怎么解决：

• 高度异常：我明明设置了对话框的默认高度为500px，屏幕总高度是1080px，但实际弹出的对话框几乎占满了大半个屏幕，接近底部，和设置的高度完全不符。
• 调整大小故障：当我用鼠标手动拖拽调整对话框大小时，它会不受控制地缩到极小，还会卡在屏幕顶部，看起来像是只显示了某个子控件，而不是完整的对话框。

下面是我的测试代码、运行输出以及系统的GTK相关包信息：

测试代码 #

import sys
import gi
gi.require_version("Gtk", "3.0")
from gi.repository import GLib, Gtk  # noqa: E402

class Chooser(Gtk.FileChooserDialog):
    def __init__(self, title=None, parent=None):
        super().__init__(
            title=title,
            parent=parent,
            action=Gtk.FileChooserAction.OPEN,
            default_height=500,  # 尝试初始化高度为500px
        )
        self.set_default_size(-1, 500)  # 尝试设置自动高度为500px
        self.set_size_request(-1, 300)  # 尝试设置最小高度为300px
        self.add_buttons(
            Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
            Gtk.STOCK_OPEN, Gtk.ResponseType.OK,
        )
        print(f"{self.props.resizable=}")
        print(f"{self.props.resize_mode=}")
        print(f"{self.props.default_height=}")
        self.add_filters()
        self.run_self()

    def add_filters(self):
        filter_txt = Gtk.FileFilter()
        filter_txt.set_name(".txt files")
        filter_txt.add_mime_type("text")
        self.add_filter(filter_txt)

    def run_self(self):
        response = self.run()
        self.destroy()

class App(Gtk.Application):
    def __init__(self):
        super().__init__(application_id="com.gnome.test")
        GLib.set_application_name("test")

    def do_activate(self):
        self.window = Gtk.ApplicationWindow(application=self, title="App")
        # 创建网格容器
        self.grid = Gtk.Grid()
        self.window.add(self.grid)
        # 创建按钮
        self.btn = Gtk.Button(label="From")
        # 布局按钮
        self.grid.attach(self.btn, 0, 0, 1, 1)
        self.grid.set_row_homogeneous(True)
        self.grid.set_column_homogeneous(True)
        # 绑定点击事件
        self.btn.connect("clicked", self.get_file)
        # 设置主窗口大小
        self.window.set_default_size(width=500, height=34)
        # 显示所有控件
        self.window.show_all()

    def get_file(self, widget):
        print("Chooser")
        chooser = Chooser(title="Chooser", parent=self.window)
        chooser.set_default_size(-1, 400)

app = App()
exit_status = app.run(sys.argv)
sys.exit(exit_status)

VS Code运行输出 #

Chooser
self.props.resizable=True
self.props.resize_mode=<enum GTK_RESIZE_QUEUE of type Gtk.ResizeMode>
self.props.default_height=500

系统GTK相关包信息 #

$ dpkg -l | grep GTK
ii  apport-gtk                          2.28.1-0ubuntu3.8                all          GTK+ frontend for the apport crash report system
ii  gir1.2-gnomebg-4.0:amd64            44.0-5build2                     amd64        Introspection data for GnomeBG (GTK 4)
ii  gir1.2-gnomedesktop-3.0:amd64       44.0-5build2                     amd64        Introspection data for GnomeDesktop (GTK 3)
ii  gir1.2-gnomedesktop-4.0:amd64       44.0-5build2                     amd64        Introspection data for GnomeDesktop (GTK 4)
ii  gir1.2-gtk-3.0:amd64                3.24.41-4ubuntu1.3               amd64        GTK graphical user interface library -- gir bindings
ii  gir1.2-gtk-4.0:amd64                4.14.5+ds-0ubuntu0.4             amd64        GTK graphical user interface library -- gir bindings
ii  gir1.2-gtksource-5:amd64            5.12.0-1build1                   amd64        gir files for the GTK+ syntax highlighting widget
ii  gir1.2-javascriptcoregtk-4.1:amd64  2.48.5-0ubuntu0.24.04.1          amd64        JavaScript engine library from WebKitGTK - GObject introspection data
ii  gir1.2-javascriptcoregtk-6.0:amd64  2.48.5-0ubuntu0.24.04.1          amd64        JavaScript engine library from WebKitGTK - GObject introspection data
ii  gir1.2-webkit-6.0:amd64             2.48.5-0ubuntu0.24.04.1          amd64        Web content engine library for GTK - GObject introspection data
ii  gir1.2-webkit2-4.1:amd64            2.48.5-0ubuntu0.24.04.1          amd64        Web content engine library for GTK - GObject introspection data
ii  gnome-accessibility-themes          3.28-2ubuntu5                    all          High Contrast GTK 2 theme and icons
ii  gnome-themes-extra:amd64            3.28-2ubuntu5                    amd64        Adwaita GTK 2 theme — engine
ii  gnome-themes-extra-data             3.28-2ubuntu5                    all          Adwaita GTK 2 theme and Adwaita-dark GTK 3 theme — common files
ii  gstreamer1.0-gtk3:amd64             1.24.2-1ubuntu1.1                amd64        GStreamer plugin for GTK+3
ii  gtk2-engines-pixbuf:amd64           2.24.33-4ubuntu1.1               amd64        pixbuf-based theme for GTK 2
ii  ibus-gtk:amd64                      1.5.29-2                         amd64        Intelligent Input Bus - GTK2 support
ii  ibus-gtk3:amd64                     1.5.29-2                         amd64        Intelligent Input Bus - GTK3 support
ii  ibus-gtk4:amd64                     1.5.29-2                         amd64        Intelligent Input Bus - GTK4 support
ii  libadwaita-1-0:amd64                1.5.0-1ubuntu2                   amd64        Library with GTK widgets for mobile phones
ii  libavahi-ui-gtk3-0:amd64            0.8-13ubuntu6                    amd64        Avahi GTK+ User interface library for GTK3
ii  libayatana-appindicator3-1          0.5.93-1build3                   amd64        Ayatana Application Indicators (GTK-3+ version)
ii  libayatana-indicator3-7:amd64       0.9.4-1build1                    amd64        panel indicator applet - shared library (GTK-3+ variant)

我尝试过在初始化、实例化后多次设置高度和最小高度，但都没效果，想问问大家我哪里操作错了？有没有办法修复这些问题？

内容来源于stack exchange