pyqt:如何在小部件周围放置边框 [英] pyqt: how to put a border frame around a widget

问题描述

我正在对现有的 PyQt 项目进行一些更改.UI 是使用 Qt Designer 创建的.

I'm making some changes to an existing PyQt project. The UI was created with Qt Designer.

相关部分是一个显示文本的 QWidget.我试图在文本周围放置边距.我认为最简单的方法是在 QWidget 周围放置一个边框，其背景颜色与 QWidget 的背景(白色)相同.

The relevant part is a QWidget that displays text. I'm trying to put margins around the text. I'd think the simplest way to do this would be to put a border around the QWidget whose background color is the same as the QWidget's background (white).

QWidget 位于 QFrame 上.我想在 QFrame 内和 QWidget 的边缘周围放置一个白色边框.我最接近的是在 QWidget 周围放置短的垂直和水平间隔，但这会显示底层的灰色 QFrame.我不知道怎么弄成白色.我更喜欢将框架保留为灰色，并在 QWidget 周围添加一个白色边框.

The QWidget is on a QFrame. I'd like to put a white border inside the QFrame and around the edge of the QWidget. The closest I've come is to put short vertical and horizontal spacers around the QWidget, but that displays the underlying grey QFrame. I can't figure out how to make that white. I'd prefer leaving the frame grey and just add a white border around the QWidget.

任何指针将不胜感激.

ui 文件:

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>EbookViewer</class>
 <widget class="QMainWindow" name="EbookViewer">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>920</width>
    <height>774</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>E-book Viewer</string>
  </property>
  <property name="windowIcon">
   <iconset resource="../../../../resources/images.qrc">
    <normaloff>:/images/viewer.png</normaloff>:/images/viewer.png</iconset>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QGridLayout" name="gridLayout_2">
    <item row="0" column="0">
     <widget class="QSplitter" name="splitter">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
      <widget class="QTreeView" name="toc">
       <property name="focusPolicy">
        <enum>Qt::WheelFocus</enum>
       </property>
      </widget>
      <widget class="QFrame" name="frame">
       <property name="frameShape">
        <enum>QFrame::StyledPanel</enum>
       </property>
       <property name="frameShadow">
        <enum>QFrame::Raised</enum>
       </property>
       <layout class="QGridLayout" name="gridLayout">
        <item row="0" column="0" colspan="2">
         <widget class="QWidget" name="view_bg" native="true">
          <property name="sizePolicy">
           <sizepolicy hsizetype="Maximum" vsizetype="Maximum">
            <horstretch>0</horstretch>
            <verstretch>0</verstretch>
           </sizepolicy>
          </property>
          <property name="minimumSize">
           <size>
            <width>0</width>
            <height>0</height>
           </size>
          </property>
          <property name="styleSheet">
           <string notr="true">background:white</string>
          </property>
          <layout class="QGridLayout" name="gridLayout_3">
           <property name="leftMargin">
            <number>200</number>
           </property>
           <property name="topMargin">
            <number>30</number>
           </property>
           <property name="rightMargin">
            <number>200</number>
           </property>
           <property name="bottomMargin">
            <number>30</number>
           </property>
           <item row="0" column="0">
            <widget class="DocumentView" name="view" native="true">
             <property name="minimumSize">
              <size>
               <width>0</width>
               <height>0</height>
              </size>
             </property>
            </widget>
           </item>
          </layout>
         </widget>
        </item>
        <item row="0" column="2">
         <widget class="QScrollBar" name="vertical_scrollbar">
          <property name="orientation">
           <enum>Qt::Vertical</enum>
          </property>
         </widget>
        </item>
        <item row="1" column="1">
         <widget class="QScrollBar" name="horizontal_scrollbar">
          <property name="orientation">
           <enum>Qt::Horizontal</enum>
          </property>
         </widget>
        </item>
        <item row="2" column="1" colspan="2">
         <widget class="QFrame" name="dictionary_box">
          <property name="frameShape">
           <enum>QFrame::StyledPanel</enum>
          </property>
          <property name="frameShadow">
           <enum>QFrame::Raised</enum>
          </property>
          <layout class="QHBoxLayout" name="horizontalLayout">
           <item>
            <widget class="QWebView" name="dictionary_view">
             <property name="minimumSize">
              <size>
               <width>0</width>
               <height>150</height>
              </size>
             </property>
             <property name="url">
              <url>
               <string>about:blank</string>
              </url>
             </property>
            </widget>
           </item>
           <item>
            <widget class="QToolButton" name="close_dictionary_view">
             <property name="toolTip">
              <string>Close dictionary</string>
             </property>
             <property name="text">
              <string>...</string>
             </property>
             <property name="icon">
              <iconset resource="../../../../resources/images.qrc">
               <normaloff>:/images/window-close.png</normaloff>:/images/window-close.png</iconset>
             </property>
            </widget>
           </item>
          </layout>
         </widget>
        </item>
       </layout>
      </widget>
     </widget>
    </item>
   </layout>
  </widget>
  <widget class="QToolBar" name="tool_bar">
   <property name="sizePolicy">
    <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
     <horstretch>0</horstretch>
     <verstretch>0</verstretch>
    </sizepolicy>
   </property>
   <property name="windowTitle">
    <string>toolBar</string>
   </property>
   <property name="movable">
    <bool>true</bool>
   </property>
   <property name="iconSize">
    <size>
     <width>32</width>
     <height>32</height>
    </size>
   </property>
   <property name="floatable">
    <bool>false</bool>
   </property>
   <attribute name="toolBarArea">
    <enum>LeftToolBarArea</enum>
   </attribute>
   <attribute name="toolBarBreak">
    <bool>false</bool>
   </attribute>
   <addaction name="action_back"/>
   <addaction name="action_forward"/>
   <addaction name="separator"/>
   <addaction name="action_open_ebook"/>
   <addaction name="action_copy"/>
   <addaction name="action_font_size_larger"/>
   <addaction name="action_font_size_smaller"/>
   <addaction name="action_table_of_contents"/>
   <addaction name="action_full_screen"/>
   <addaction name="separator"/>
   <addaction name="action_previous_page"/>
   <addaction name="action_next_page"/>
   <addaction name="separator"/>
   <addaction name="action_bookmark"/>
   <addaction name="action_reference_mode"/>
   <addaction name="separator"/>
   <addaction name="action_preferences"/>
   <addaction name="action_metadata"/>
   <addaction name="separator"/>
   <addaction name="action_print"/>
  </widget>
  <widget class="QToolBar" name="tool_bar2">
   <attribute name="toolBarArea">
    <enum>TopToolBarArea</enum>
   </attribute>
   <attribute name="toolBarBreak">
    <bool>false</bool>
   </attribute>
   <addaction name="action_find_next"/>
   <addaction name="action_find_previous"/>
  </widget>
  <action name="action_back">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/back.png</normaloff>:/images/back.png</iconset>
   </property>
   <property name="text">
    <string>Back</string>
   </property>
  </action>
  <action name="action_forward">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/forward.png</normaloff>:/images/forward.png</iconset>
   </property>
   <property name="text">
    <string>Forward</string>
   </property>
  </action>
  <action name="action_next_page">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/next.png</normaloff>:/images/next.png</iconset>
   </property>
   <property name="text">
    <string>Next page</string>
   </property>
  </action>
  <action name="action_previous_page">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/previous.png</normaloff>:/images/previous.png</iconset>
   </property>
   <property name="text">
    <string>Previous page</string>
   </property>
  </action>
  <action name="action_font_size_larger">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/font_size_larger.png</normaloff>:/images/font_size_larger.png</iconset>
   </property>
   <property name="text">
    <string>Font size larger</string>
   </property>
  </action>
  <action name="action_font_size_smaller">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/font_size_smaller.png</normaloff>:/images/font_size_smaller.png</iconset>
   </property>
   <property name="text">
    <string>Font size smaller</string>
   </property>
  </action>
  <action name="action_table_of_contents">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/chapters.png</normaloff>:/images/chapters.png</iconset>
   </property>
   <property name="text">
    <string>Table of Contents</string>
   </property>
  </action>
  <action name="action_metadata">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/dialog_information.png</normaloff>:/images/dialog_information.png</iconset>
   </property>
   <property name="text">
    <string>Metadata</string>
   </property>
  </action>
  <action name="action_open_ebook">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/document_open.png</normaloff>:/images/document_open.png</iconset>
   </property>
   <property name="text">
    <string>Open ebook</string>
   </property>
  </action>
  <action name="action_find_next">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/arrow-down.png</normaloff>:/images/arrow-down.png</iconset>
   </property>
   <property name="text">
    <string>Find next</string>
   </property>
   <property name="toolTip">
    <string>Find next occurrence</string>
   </property>
   <property name="shortcut">
    <string>F3</string>
   </property>
  </action>
  <action name="action_copy">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/edit-copy.png</normaloff>:/images/edit-copy.png</iconset>
   </property>
   <property name="text">
    <string>Copy to clipboard</string>
   </property>
  </action>
  <action name="action_preferences">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/config.png</normaloff>:/images/config.png</iconset>
   </property>
   <property name="text">
    <string>Preferences</string>
   </property>
  </action>
  <action name="action_reference_mode">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/lookfeel.png</normaloff>:/images/lookfeel.png</iconset>
   </property>
   <property name="text">
    <string>Reference Mode</string>
   </property>
  </action>
  <action name="action_bookmark">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/bookmarks.png</normaloff>:/images/bookmarks.png</iconset>
   </property>
   <property name="text">
    <string>Bookmark</string>
   </property>
  </action>
  <action name="action_full_screen">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/page.png</normaloff>:/images/page.png</iconset>
   </property>
   <property name="text">
    <string>Toggle full screen</string>
   </property>
  </action>
  <action name="action_print">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/print.png</normaloff>:/images/print.png</iconset>
   </property>
   <property name="text">
    <string>Print</string>
   </property>
  </action>
  <action name="action_find_previous">
   <property name="icon">
    <iconset resource="../../../../resources/images.qrc">
     <normaloff>:/images/arrow-up.png</normaloff>:/images/arrow-up.png</iconset>
   </property>
   <property name="text">
    <string>Find previous</string>
   </property>
   <property name="toolTip">
    <string>Find previous occurrence</string>
   </property>
   <property name="shortcut">
    <string>Shift+F3</string>
   </property>
  </action>
 </widget>
 <customwidgets>
  <customwidget>
   <class>QWebView</class>
   <extends>QWidget</extends>
   <header>QtWebKit/QWebView</header>
  </customwidget>
  <customwidget>
   <class>DocumentView</class>
   <extends>QWidget</extends>
   <header>calibre/gui2/viewer/documentview.h</header>
   <container>1</container>
  </customwidget>
 </customwidgets>
 <resources>
  <include location="../../../../resources/images.qrc"/>
 </resources>
 <connections/>
</ui>

推荐答案

将您的 QWidget 放在另一个 QWidget 中，并将其背景设置为相同的颜色.

Put your QWidget inside another QWidget with its background set to the same colour.

然后您可以使用父QWidget的布局来调整每边边距的宽度(这都可以在Qt Designer中完成).

You can then use the layout of the parent QWidget to adjust the width of the margin on each side (this can all be done within Qt Designer).

编辑

以下是在 Qt Designer 中实现此目的的步骤:

Here are the steps to take in Qt Designer to achieve this:

1. 选择包含文本小部件的框架小部件并打破其布局.
2. 向框架小部件添加一个新的 QWidget(您可以将其命名为borderWidget").
3. 使用 styleSheet 设置边框小部件的背景颜色属性编辑器中的属性:例如背景颜色:白色.(注意:如果您暂时将其设置为对比色可能会有所帮助，以便您可以更轻松地看到发生了什么).
4. 将文本小部件拖放到边框小部件上.
5. 选择边框小部件并设置其布局(例如以网格").
6. 选择框架小部件并设置其布局(例如以网格").
7. 选择边框小部件.转到属性中的布局部分编辑.在那里你会看到像 layoutTopMargin 这样的属性，layoutLeftMargin 等可用于调整边界.

1. Select the frame widget containing the text widget and break its layout.
2. Add a new QWidget to the frame widget (you could name it "borderWidget").
3. Set the background colour of the border widget using the styleSheet property in the Property Editor: e.g. background-color: white. (nb: it might help if you temporarily set this to a contrasting colour so you can more easily see what's going on).
4. Drag and drop the text widget onto the border widget.
5. Select the border widget and set it's layout (e.g. "Lay Out in a Grid").
6. Select the frame widget and set it's layout (e.g. "Lay Out in a Grid").
7. Select the border widget. Go to the Layout section in the Property Editor. There you will see properties like layoutTopMargin, layoutLeftMargin, etc which can be used to adjust the size of the border.

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