MATLAB: How to change the default background color of Text Arrow

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It is possible to annotate a figure by choosing Insert > Text Arrow from the menu bar on top of the figure. You then draw an arrow and type text into a text box. The default background color for the text is 'none'. Instead I would like the default to be 'white'. I know it is possible to set the default value of graphics properties by using a command like

set(0, 'DefaultAxesColor', 'white')

What is the equivalent command to set the default background color of all text arrows? I do not want to change the background for any other text objects, just the text that is entered in a text arrow.

Best Answer

Set the default background color of all text objects before creating the text arrows:

set(gcf, 'DefaultTextBackgroundColor', [1,0,0])

The text objects of the arrow objects are standard text objects, so you cannot set a default values for only these objects, but not for other text objects.

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MATLAB: Do the static textboxes in the GUI print in gray color unlike the GUI background

The textboxes in a GUI not printing in the same color as the background is an expected behavior.

A workaround for printing the textboxes in white color is to set the background color of the textboxes to white. The color of the textboxes can then be reverted to the original color after the printing is completed. The following code can be added to the Shortcut to accomplish this task.

% Show Hidden Handles to identify the GUI figure
set(0,'showHiddenHandles','on')
% Identify the GUI figure
figureHandle = findobj(0,'Type','Figure');
% Extract the GUI's children
childrenHandles = get(figureHandle,'Children');
% Identify the textbox object handles
textBoxHandles = findobj(childrenHandles,'Style','text');
% Store the original background color of the textbox
originalBGColor = get(textBoxHandles(1),'BackgroundColor');
% Set the background color of textboxes to white 
set(textBoxHandles,'BackgroundColor','w')
% Print the GUI figure
print(figureHandle)
% Revert the background color of textboxes to the original color
set(textBoxHandles,'BackgroundColor',originalBGColor)

Note if using PRINTDLG (or other substitutions for PRINT) that you may need to allow printing to finish before the last line

set(textBoxHandles,'BackgroundColor',originalBGColor)

can be executed. Simply insert a PAUSE command or manually remove this last line and execute it separately.

MATLAB: Is the string text displayed in the figure window have a different background color

MATLAB uses the standard system background color of the system on which the GUI is running as the default component background color. This color varies on different computer systems, e.g., the standard shade of gray on the PC differs from that on UNIX, and may not match the default GUI background color. This appears to be causing the issue that you are facing.

To resolve the issue, use the following command at the start of your MATLAB session:

set(0,'defaultuicontrolBackgroundColor',get(0,'defaultFigureColor'))

For more information on setting the default properties of graphic objects, refer to the following documentation:

 <http://www.mathworks.com/access/helpdesk/help/techdoc/index.html?/access/helpdesk/help/techdoc/creating_plots/f7-21465.html>

Best Answer

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MATLAB: Do the static textboxes in the GUI print in gray color unlike the GUI background

MATLAB: Is the string text displayed in the figure window have a different background color

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