classdef GUI_CanvasMouseEvents < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        CanvasMouseEvents  matlab.ui.Figure
        ax_2               matlab.ui.control.UIAxes
        ax_1               matlab.ui.control.UIAxes
    end


    properties (Access = private)
        mouseEvents = []; % Handle to an object of the Emouse class
        canvas1     = []; % Handle to an object of the Canvas class
        canvas2     = []; % Handle to an object of the Canvas class
    end

    methods (Access = private)

        % Called when window is resized
        function Canvas1_SizeChangedFcn(app)
            if ~isempty(app.canvas1)
                left   = -1;  right = 11;
                bottom = -1;  top   = 5;
                app.canvas1.fit2view([left, bottom, right, top]);
            end
        end

        % Called when window is resized
        function Canvas2_SizeChangedFcn(app)
            if ~isempty(app.canvas2)
                left   = -1;  right = 11;
                bottom = -1;  top   = 5;
                app.canvas2.fit2view([left, bottom, right, top]);
            end
        end

        % Called when user attempts to close dialog
        function deleteCallback(app)
            choice = questdlg('Are you sure you want to exit?',...
            'Exit','Exit','Cancel','Cancel');
            switch choice
                case 'Cancel'
                    return
            end
            app.delete();
        end
    end


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

        % Code that executes after component creation
        function startupFcn(app)
            % Initialize objects to manage canvases behavior
            app.canvas1 = MyCanvas_2D(app.ax_1,app.CanvasMouseEvents);
            app.canvas2 = MyCanvas_2D(app.ax_2,app.CanvasMouseEvents);

            % Turn rulers and grid off
            app.canvas1.Ruler(false); app.canvas1.Grid(false);
            app.canvas2.Ruler(false); app.canvas2.Grid(false);

            % Turn off axes tool bars
            app.ax_1.Toolbar.Visible = 'off';
            app.ax_1.Interactions = [];
            app.ax_2.Toolbar.Visible = 'off';
            app.ax_2.Interactions = [];

            % Set limits of canvas 1 and canvas 2 (xmin = -1, xmax = 11, ymin = -1, ymax = 5)
            left   = -1;  right = 11;
            bottom = -1;  top   = 5;
            app.canvas1.fit2view([left, bottom, right, top]);
            app.canvas2.fit2view([left, bottom, right, top]);

            % Initialize object to manage mouse events
            app.mouseEvents = MouseEvents(app.CanvasMouseEvents,app.canvas1);

            % Set deletion callback
            app.CanvasMouseEvents.CloseRequestFcn = app.createCallbackFcn(@deleteCallback, false);
        end

        % Size changed function: CanvasMouseEvents
        function CanvasMouseEventsSizeChanged(app, event)
            win_pos = app.CanvasMouseEvents.Position;
            win_width = win_pos(3);
            win_height = win_pos(4);
            canvas1_x = 8;
            canvas1_y = (win_height / 2) + 4;
            canvas1_width = win_width - 16;
            canvas1_height = (win_height / 2) - 16;
            app.ax_1.Position = [canvas1_x canvas1_y canvas1_width canvas1_height];
            canvas2_x = 8;
            canvas2_y = 8;
            canvas2_width = win_width - 16;
            canvas2_height = (win_height / 2) - 16;
            app.ax_2.Position = [canvas2_x canvas2_y canvas2_width canvas2_height];
            app.Canvas1_SizeChangedFcn();
            app.Canvas2_SizeChangedFcn();
        end
    end

    % Component initialization
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create CanvasMouseEvents and hide until all components are created
            app.CanvasMouseEvents = uifigure('Visible', 'off');
            app.CanvasMouseEvents.AutoResizeChildren = 'off';
            app.CanvasMouseEvents.Color = [0 0 0];
            app.CanvasMouseEvents.Position = [100 100 642 573];
            app.CanvasMouseEvents.Name = 'CanvasMouseEvents';
            app.CanvasMouseEvents.SizeChangedFcn = createCallbackFcn(app, @CanvasMouseEventsSizeChanged, true);

            % Create ax_1
            app.ax_1 = uiaxes(app.CanvasMouseEvents);
            app.ax_1.Toolbar.Visible = 'off';
            app.ax_1.XColor = 'none';
            app.ax_1.XTickLabelRotationMode = 'manual';
            app.ax_1.YColor = 'none';
            app.ax_1.YTickLabelRotationMode = 'manual';
            app.ax_1.ZTickLabelRotationMode = 'manual';
            app.ax_1.Position = [16 283 602 278];

            % Create ax_2
            app.ax_2 = uiaxes(app.CanvasMouseEvents);
            app.ax_2.Toolbar.Visible = 'off';
            app.ax_2.XColor = 'none';
            app.ax_2.XTickLabelRotationMode = 'manual';
            app.ax_2.YColor = 'none';
            app.ax_2.YTickLabelRotationMode = 'manual';
            app.ax_2.ZTickLabelRotationMode = 'manual';
            app.ax_2.Position = [16 6 602 278];

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

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = GUI_CanvasMouseEvents

            % Create UIFigure and components
            createComponents(app)

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

            % 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.CanvasMouseEvents)
        end
    end
end

Published with MATLAB® R2026a