如何自定义 App Designer 图形的背景?

How to customize the background of an App Designer figure?

我想附加一个徽标或更改 App Designer 的整个背景 uifigure。如何做到这一点?

  • 如果要为整个图形设置纯色背景,存在a documented way可以做到这一点,例如:

    % When creating a new uifigure:
    fig = uifigure('Color',[R G B])
    % if the uifigure already exists:
    fig.Color = [R G B];
    
  • 如果您只想更改某个区域的背景颜色,您可以添加一个没有标题或边框的uipanel (uipanel(...,'BorderType','none','Title','','BackgroundColor',[R G B]))。
  • 如果要设置一张图片作为整幅图的背景:

    function q41602238a
    %% Turn off some warnings:
    warning off Matlab:structOnObject
    warning off Matlab:HandleGraphics:ObsoletedProperty:JavaFrame
    
    %% 0. Create a uifigure:
    app = uifigure();
    %% 1. Get a handle to the webwindow:
    while true
      try   
         win = struct(struct(app).Controller).Container.CEF;
         break
      catch
         pause(0.1); % Give the figure (webpage) some more time to load
      end
    end 
    %% 2. Find the data_tag of the DOM element we want to edit:
    data_tag = char(struct(app).Controller.ProxyView.PeerNode.getId);
    
    %% 3. Manipulate the DOM via a JS command
    while true
      try
        win.executeJS(['dojo.style(dojo.query("[data-tag^=''' data_tag ''']")[0],"background-image","url(https://upload.wikimedia.org/wikipedia/commons/8/80/Wikipedia-logo-v2.svg")']);
        break
      catch
        pause(0.1); % Maybe JS is still not ready.
      end
    end
    

    结果:

  • 如果您想将图像设置为某个区域的背景:

    function q41602238b
    %% Turn off some warnings:
    warning off Matlab:structOnObject
    warning off Matlab:HandleGraphics:ObsoletedProperty:JavaFrame
    
    %% 0. Create a some element:
    app = uifigure();
    pnl = uipanel(app);
    %% 1. Get a handle to the webwindow:
    while true
      try   
         win = struct(struct(app).Controller).Container.CEF;
         % disp(win.URL);
         break
      catch
         pause(0.1); % Give the figure (webpage) some more time to load
      end
    end 
    %% 2. Find the id of the DOM element we want to edit:
    data_tag = char(struct(pnl).Controller.ProxyView.PeerNode.getId);
    widgetId = win.executeJS(['dojo.getAttr(dojo.query("[data-tag^=''' data_tag ''']")[0],"widgetid")']);
    
    %% 3. Manipulate the DOM via a JS command
    dojo_style_prefix = ['dojo.style(dojo.query("#' widgetId(2:end-1) '")[0],'];
    while true
      try
        win.executeJS([dojo_style_prefix '"background-image","url(https://upload.wikimedia.org/wikipedia/commons/8/80/Wikipedia-logo-v2.svg")']);
    
        break
      catch
        pause(0.1); % Maybe JS is still not ready.
      end
    end
    

    结果:

备注:

  1. 最后两个例子是基于这两个帖子:1, 2,操作原理是在style中添加一个background-image: "..."入口属性 一些所需的 UI 元素(恰好是 HTML div)。

  2. 可在 this GitHub 存储库中找到用于以编程方式操作 App Designer 图形的工具。

  3. 示例图像恰好是一个.svg,这很有趣,因为我们可以在这个导出"regular" MATLAB图形格式,然后将它们用作 uifigure :)

  4. 的背景

很遗憾我还不能发表评论,所以这是另一个答案。

从 Matlab 2017a 开始,控制器不再有容器 属性。这有效:

warning off Matlab:structOnObject
warning off Matlab:HandleGraphics:ObsoletedProperty:JavaFrame

win = struct(struct(struct(app).Controller).PlatformHost).CEF;

data_tag = char(struct(app).Controller.ProxyView.PeerNode.getId);

win.executeJS(['dojo.style(dojo.query("[data-tag^=''' data_tag ''']")[0],"background-image","url(https://upload.wikimedia.org/wikipedia/commons/8/80/Wikipedia-logo-v2.svg")']);

也可以使用

找到所有活跃的网站window
webWindows = matlab.internal.webwindowmanager.instance.findAllWebwindows();

可惜我还没有查到,哪个window属于哪个UIFigure(可以用Title或者Position来过滤,但是两个相同的UIFigure会出问题)。

免责声明,Davide Miani 在此处发布了该信息:https://undocumentedmatlab.com/blog/customizing-uifigures-part-1#comment-406524