Continuous tracking of 'LocationChanged' event of figure
6 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Arabarra
el 27 de Mzo. de 2018
Comentada: Matt J
el 18 de Mayo de 2021
Hi,
I am trying to glue a (main) figure 1 to a (following) figure 2, so that when the user manually moves the main figure, the following figure moves with it. The intended effect is that they are side by side at every moment. By now, my strategy is to use a listener that listens to the 'LocationChanged' event of main figure and replaces figure 2 according to the changes notified by figure 1. The problem is that 'LocationChanged' seems to get notified only after the user has stopped moving the main figure. At this moment, figure 2 just jumps to the side of the main figure.... is there a way to ensure that the event 'LocationChanged' is issued continuously while the figure is being moved?
0 comentarios
Respuesta aceptada
Sean de Wolski
el 28 de Mzo. de 2018
It seems to be firing and responding correctly for me (18a, Windows) as I drag fig1 around.
posOffset = [500 0]; % positional offset
fig1 = figure('Units','pixels','Position',[140 140 400 400]);
fig2 = figure('Units','pixels','Position',[fig1.Position(1:2)+posOffset 400 400]);
listener1 = event.listener(fig1, 'LocationChanged', @(~,~)set(fig2, 'Position', fig1.Position+[posOffset 0 0]));
4 comentarios
Sean de Wolski
el 29 de Mzo. de 2018
@Kai, et al. you can look at the meta class for any class to see all of the attributes of all events/methods/properties for any class.
I just did:
mc = metaclass(figure)
Matt J
el 18 de Mayo de 2021
Strange, though, that the events() command lists such a small subset of the events:
>> events(gcf)
Events for class matlab.ui.Figure:
ObjectBeingDestroyed
PropertyAdded
PropertyRemoved
That would seem to mean that 'LocationChanged' and others are undocumented and aren't to be relied upon for backward compatibility.
Más respuestas (1)
Kai Domhardt
el 27 de Mzo. de 2018
Editada: Kai Domhardt
el 28 de Mzo. de 2018
If you are just trying to display two plot side by side the subplot function is what you are looking for, without having to track figure locations.
If you really want to move the individual figure you can achieve this with:
function window_motion_test
mainFig = figure();
pause(0.2) % Wait for the figure construction complete.
jFig = get(main_fig, 'JavaFrame'); % get JavaFrame. You might see some warnings.
jWindow = jFig.fHG2Client.getWindow; % before 2011a it could be `jFig.fFigureClient.getWindow`. Sorry I cannot test.
jbh = handle(jWindow,'CallbackProperties'); % Prevent memory leak
set(jbh,'ComponentMovedCallback',{@windowMoved});
followFig = figure();
function windowMoved(src,callbackdata)
jComponent = callbackdata.getComponent;
mainFig_pos = jComponent.getLocation;
mainFig_size = jComponent.getSize;
followFig_width = followFig.Position(3);
followFig_height = followFig.Position(4);
followFig.Position = [mainFig_pos.x + mainFig_size.width,...
mainFig_pos.getY,...
followFig_width,...
followFig_height];
%followFig lower left corner is now attached to
%mainFig lower right corner
end
end
The important part comes from this question on stackoverflow, which in turn references this entry on undocumentedmatlab.
4 comentarios
Ver también
Categorías
Más información sobre Interactive Control and Callbacks en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!