How do i determine if the uiaxes toolbar is active?

I am developing an app which grabs points from a uiaxes object based on mouse-clicks within the uiaxes. However, if I select one of the uiaxes toolbar tools (eg zoom or pan) then I need to suspend interpreting mouse clicks for grabbing points until I have stopped using the uiaxes toolbar. How do I do this?

Basically I need to know if the UIAxes toolbar is currently active.

Thanks in advance for any help.

[Chloe Lynch]

Hello, did you ever solve this? I’m having the same issue! :/

[Hugh Stone]

Hi Chloe,

I think the only solution is to export the code (I guess once you've finished with everything else in AppDesigner) and add in the "SelectionChangedFcn" callback manually as suggested by Harsha.

Hugh

Answer 1

[Harsha Priya Daggubati]

Hi,

I suggest using 'SelectionChangedFcn' callback. This is notified whenever a state button(zoom/pan) is clicked, and you can know which button is clicked. You can also write your custom MATLAB code in the callback associated.

Refer the documentation link for more details:

https://in.mathworks.com/help/matlab/ref/axtoolbar.html

[Hugh Stone]

Thanks Harsha,

That is exactly what I would like to do but when I look in AppDesigner, there is no "ButtonGroup" underneath the UIAxes object (see picture below) and the UIAxes object has no callbacks itself. So... I can't create the callback like I do for other button groups etc., where I add the callback in "Design View" and then fill the code in in "Code View".

I looked at the link you sent and can see how to add a callback to the toolbar purely by coding but don't know how / where to add this code. I thought that callbacks were selected in Design View, which then gave a stub to add code into in Code View.

Can I add a callback directly in Code View without first adding it in Design View?

Thanks in advance for any further help.

Regards,

Hugh

[Harsha Priya Daggubati]

Hi,

Yes you were right about adding callbacks in Appdesigner. As of now, app designer doesnot support 'axtoolbar'. Possible workaround would be to develop you can export your app to MATLAB Code, and add axes toolbar manually. You can check the attached code snippet.

classdef app1_exported < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure  matlab.ui.Figure
        UIAxes    matlab.ui.control.UIAxes
        Button    matlab.ui.control.Button
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Code that executes after component creation
        function startupFcn(app)
            
        end

        % Button pushed function: Button
        function ButtonPushed(app, event)
            
        end
        function myCallback(app,event)
        disp('Selection Changed')
        end
    end

    % Component initialization
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'UI Figure';

            % Create UIAxes
            app.UIAxes = uiaxes(app.UIFigure);
            title(app.UIAxes, 'Title')
            xlabel(app.UIAxes, 'X')
            ylabel(app.UIAxes, 'Y')
            app.UIAxes.Position = [108 164 300 185];
            tb1 = axtoolbar(app.UIAxes,{'zoomin','pan'},'SelectionChangedFcn',@myCallback);
            tb1.SelectionChangedFcn = createCallbackFcn(app, @myCallback, true);
            
            % Create Button
            app.Button = uibutton(app.UIFigure, 'push');
            app.Button.ButtonPushedFcn = createCallbackFcn(app, @ButtonPushed, true);
            app.Button.Position = [109 403 100 22];

            % Show the figure after all components are created
            app.UIFigure.Visible = 'on';
        end
    end

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = app1_exported

            % Create UIFigure and components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)
classdef app1_exported < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure  matlab.ui.Figure
        UIAxes    matlab.ui.control.UIAxes
        Button    matlab.ui.control.Button
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Code that executes after component creation
        function startupFcn(app)
            
        end

        % Button pushed function: Button
        function ButtonPushed(app, event)
            
        end
        function myCallback(app,event)
        disp('Selection Changed')
        end
    end

    % Component initialization
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'UI Figure';

            % Create UIAxes
            app.UIAxes = uiaxes(app.UIFigure);
            title(app.UIAxes, 'Title')
            xlabel(app.UIAxes, 'X')
            ylabel(app.UIAxes, 'Y')
            app.UIAxes.Position = [108 164 300 185];
            tb1 = axtoolbar(app.UIAxes,{'zoomin','pan'},'SelectionChangedFcn',@myCallback);
            tb1.SelectionChangedFcn = createCallbackFcn(app, @myCallback, true);
            
            % Create Button
            app.Button = uibutton(app.UIFigure, 'push');
            app.Button.ButtonPushedFcn = createCallbackFcn(app, @ButtonPushed, true);
            app.Button.Position = [109 403 100 22];

            % Show the figure after all components are created
            app.UIFigure.Visible = 'on';
        end
    end

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = app1_exported

            % Create UIFigure and components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            % Execute the startup function
            runStartupFcn(app, @startupFcn)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end
            % Execute the startup function
            runStartupFcn(app, @startupFcn)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end

Hope this helps!

[Hugh Stone]

Thanks for all your help - I'll try that!