GUI中的Matlab缩放侦听器 [英] Matlab zoom listener in a GUI

问题描述

我有一个GUI，它由一个图和一个MATLAB中的静态文本组成.

I have a gui that consists of a plot and a static text in MATLAB.

我想在图上使用一个缩放侦听器，以便可以使用放大倍数更新静态文本.无论如何，我能做到这一点吗?

I want to have a zoom listener on the plot so that i can update the static text with the magnification. Is there anyway that i can do this?

推荐答案

脚本文件(或者，您可以根据自己的喜好将其作为嵌套函数来实现):

Script file (or you can do this as a nested function, whatever you feel like):

f = figure(1);
z = zoom(f);
imshow(ones(400));
xlim = get(gca,'XLim');
t = text(150,150,'hello','fontsize',4000/(xlim(2)-xlim(1)));
set(z,'ActionPostCallback',@(obj,event_obj)testcallback(obj,event_obj,t));

功能testcallback.m文件:

function testcallback(obj,event_obj,t)
    xlim = get(event_obj.Axes,'XLim');
    set(t,'fontsize',4000/(xlim(2)-xlim(1)));
end

输出:

此外，如果您想直接更改缩放功能的工作方式或使其他事情陷入混乱，这是zoom对象的matlab文档:

Also, here's the matlab documentation on the zoom object if you want to change directly how the zoom function works or mess with some other things:

http://www.mathworks.com/help/matlab/ref /zoom.html

最后，您可以将其实现为嵌套函数以传递文本对象.将其另存为testfunction.m，然后只需键入testfunction，即可在终端中运行它:

Lastly, you can implement this as a nested function to pass the text object. Save this as testfunction.m and then run it in the terminal by simply typing testfunction:

function testfunction

    f = figure(1);
    z = zoom(f);
    imshow(ones(400));
    xlim = get(gca,'XLim');
    t = text(150,150,'hello','fontsize',4000/(xlim(2)-xlim(1)));
    set(z,'ActionPostCallback',@testcallback);

    function testcallback(obj,event_obj)
        xlim = get(event_obj.Axes,'XLim');
        set(t,'fontsize',4000/(xlim(2)-xlim(1)));
    end

end

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