MATLAB: Can the background of “Text Area” be transparent

app designerguiMATLABtext areatransparent background

I am desiging a GUI and I want to ask (as shown in the following picture) how can I make the background of the "Text Area" transparent? so that the image in the background appears whole.

I tried using "Label" feature instead, it has a transparent background, but it doesn't have a scrollbar and I need a scrollbar.

Best Answer

With R2019b and using the uifigure rather than figure, there is a uihtml() element, which seems to have scroll by default (don't need to wrap in something that additionally sets CSS overflow property)

f = uifigure('Color','r');
h = uihtml(f);
cstr = arrayfun(@(d)sprintf('<p>line %d</p>',d),1:10,'uni',false)
h.HTMLSource = horzcat(cstr{:});

Related Solutions

MATLAB: How to get point value in app designer plots

Provide the app's figure handle in your call to datacursormode.

The window DisplayStyle is not supported in UIfigures.

The default value to SnapToDataVertex is on so you don't need to include that.

dcm_obj = datacursormode(app.MyAppUIFigure);
dcm_obj.Enable = 'on';

I'm not sure what cursorInfo is in your code.

update

In 2019b, after executing the lines above if the mouse hovers over a data point and creates a data tip, the following warning appears. Apparently this functionality hasn't been rolled out yet.

Warning: Error occurred while executing the listener callback for event WindowMouseMotion defined for class matlab.ui.Figure:

Error using matlab.ui.Figure/set

Functionality not supported with figures created with the uifigure function. For more information, see Graphics Support in App Designer.

Error in setptr (line 386)

An alternative would be to use the data tips by hovering the mouse over a data point. This code below waits for a data tip to appear and then extracts its coordinates.

tth = findall(app.UIAxes,'Type','hggroup');     % find any pre-existing data tips
delete(tth)                                     % remove them
tth = [];
while isempty(tth)
     tth = findall(app.UIAxes,'Type','hggroup');
     pause(0.1) % important, without it Matlab crashes
end
disp(tth.Position)

MATLAB: App Designer Capabilities – it is nerve-wrecking!

1) "Can I add print to the menubar?

You can add anything you want to the menubar. From the AppDesigner interface, drag and drop the Menu Bar from the Figure Tool section to your GUI. Add a new menu item and rename the new "Menu" to "Print". Then in the MenuSelectionFcn() callback function, you can assign any subroutine you'd like. However, print() is not supported for UIFigures (bummer) so I'm not sure what you intend to print. You can always use a 3rd party screen shot program.

2) "Can I add, save, saveas...."

Similar to my comment above, save(), saveas() and savefig() are not supported for UIFigure (double bummer).

[UPDATE]

If you're working with GUIDE or a GUI developed from uicontrol(), you can add a button, name it "save", and in its callback function, you can save an image of the GUI like this.

saveas(handles.MyGUI, 'MyGUIsnapshot', 'png')
% * 'MyGui' is the handle to your GUI figure.  
% * I don't recommend saving it as 'fig' since you'll end up with 
% multiple GUIs instead of an image of your GUI.

3) "Can I manipuate a table to have move-up and move-down buttons? "

The tables in appdesigner already have those features.

4) "Can I have pan, rotate, etc. for a figure?"

Yes! For UI axes, both rotate3d() and pan() only support the on and off arguments.

pan(app.UIAxes, 'on') 
rotate3d(app.UIAxes, 'on')

Best Answer

Related Solutions

MATLAB: How to get point value in app designer plots

MATLAB: App Designer Capabilities – it is nerve-wrecking!

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