Matlab：获取图中的点击坐标，但保持按钮回调 [英] Matlab: Get coordinates of clicks in figure BUT keep button-callbacks

问题描述

我需要一个函数，它给我的点击在我的图窗口的坐标和鼠标点击（左，中，右或键按下），但我仍然想使用uicontrol（） - 按钮。我目前使用ginput（）它工作正常，但按钮回调函数不执行，因此我认为ginput（）覆盖他们:(
提前感谢alot！

编辑：从马特（第二壶）的编辑代码做到这一点，但只是不提供功能WHICH按钮被点击：
http://www.mathworks.com/matlabcentral/answers/7528-ginput-in-a-gui ： （

EDIT
最后我想出了自己，我希望你喜欢它。 ：

  function varargout = ginput_ax（ha，n）
 if nargin <2 
n = 1; 
 end 
k = 0; 
 button = 0; 
 xy = zeros（n，2）; 
 hf = get（ha，'parent'）; 
图形（hf）; 
 set（hf，'WindowButtonMotionFcn'，@ changepointer）
 set（ha，'ButtonDownFcn'，@ getpoints）
 hp = get（ha，'children' ; 
 ht = get（hp，'hittest'）; 
 set（hp，'hittest'，'off'）
 axlim = get（ha，'Position'）; 
 fglim = get（hf，'Position'）; 
 x1 = axlim（1）* fglim（3）+ fglim（1）; 
 x2 =（axlim（1）+ axlim（3））* fglim（3）+ fglim（1） 
 y1 = axlim（2）* fglim（4）+ fglim（2）; 
 y2 =（axlim（2）+ axlim（4））* fglim（4）+ fglim（2） 
 waitfor（hf，'WindowButtonMotionFcn'，[]）
 if iscell（ht）
 for jj = 1：length（ht）
 set（hp（jj），'hittest '，ht {jj}）
 end 
 else 
 set（hp，'hittest'，ht）
 end 
 
％鼠标按钮识别。 .. 
 if（strcmp（button，'normal'））
 button = 1; ％left 
 elseif（strcmp（button，'extend'））
 button = 2; ％right 
 elseif（strcmp（button，'alt'））
 button = 3; ％middle 
 else 
 button = 4; ％双击任何鼠标按钮
 end 
 
如果nargout == 3 
 varargout {1} = xy（：，1）; 
 varargout {2} = xy（：，2）; 
 varargout {3} = button; 
 elseif nargout == 2 
 varargout {1} = xy（：，1）; 
 varargout {2} = xy（：，2）; 
 else 
 varargout {1} = xy; 
 end 
 function changepointer（〜，〜）
 pntr = get（0，'PointerLocation'）; 
 if pntr（1）> x1&& pntr（1）< x2&& pntr（2）> y1&& pntr（2）< y2 
 set（hf，'Pointer'，'crosshair'）
 else 
 set（hf，'Pointer'，'arrow'）
 end 
 end 
 function getpoints（src，evnt）
 cp = get（src，'CurrentPoint'）; 
 button = get（hf，'SelectionType'）; 
 k = k + 1; 
 xy（k，:) = cp（1,1：2）; 
 if k == n 
 set（hf，'Pointer'，'arrow'）
 set（hf，'WindowButtonMotionFcn'，[]）
 set（ha，'ButtonDownFcn '，[]）
 end 
 end 
 end 
  

将它复制到一个新文件，如ginput_ax.m，然后通过

$ p

 图
 ginput_ax N）
  

而 N 得分！甚至比ginput更好，因为uicontrol按钮工作，双击被识别，十字准线指针只显示在实际情节，而不是图形窗口中的情节的灰色边框:)希望你喜欢它！

$找到一个很好的工作解决方案，这甚至比ginput更好，因为十字线只显示在实际情节（因此在轴内）。请参阅上面的编辑！

I need a function which gives me the coordinates of a click in my figure window AND the mousebutton which was clicked (left, middle, right or KEY pressed), but I still want to use uicontrol()-buttons. I'm currently using ginput() which works fine but the button callback functions are NOT executed thus I think ginput() overrides them :( thanks alot in advance!

edit: the "edit"-code from matt (second pots) does this, but just doesn't offer the functionality WHICH button was clicked: http://www.mathworks.com/matlabcentral/answers/7528-ginput-in-a-gui :(

EDIT Finally I figured it out myself. I hope you like it. I made changes to the original code from matt:

function varargout = ginput_ax(ha,n)
if nargin<2
    n=1;
end
k = 0;
button = 0;
xy = zeros(n,2);
hf = get(ha,'parent');
figure(hf);
set(hf,'WindowButtonMotionFcn',@changepointer)
set(ha,'ButtonDownFcn',@getpoints)
hp = get(ha,'children');
ht = get(hp,'hittest');
set(hp,'hittest','off')
axlim = get(ha,'Position');
fglim = get(hf,'Position');
x1 = axlim(1)*fglim(3) + fglim(1);
x2 = (axlim(1)+axlim(3))*fglim(3) + fglim(1);
y1 = axlim(2)*fglim(4) + fglim(2);
y2 = (axlim(2)+axlim(4))*fglim(4) + fglim(2);
waitfor(hf,'WindowButtonMotionFcn',[])
if iscell(ht)
    for jj=1:length(ht)
        set(hp(jj),'hittest',ht{jj})
    end
else
    set(hp,'hittest',ht)
end

% Mouse-Button recognition...
if(strcmp(button, 'normal'))
    button = 1; % left
elseif(strcmp(button, 'extend'))
    button = 2; % right
elseif(strcmp(button, 'alt'))
    button = 3; % middle
else
    button = 4; % double click any mousebutton
end

if nargout==3 
    varargout{1} = xy(:,1);
    varargout{2} = xy(:,2);
    varargout{3} = button;
elseif nargout==2
    varargout{1} = xy(:,1);
    varargout{2} = xy(:,2);
else
    varargout{1} = xy;
end
    function changepointer(~,~)
        pntr = get(0,'PointerLocation');
        if pntr(1)>x1 && pntr(1)<x2 && pntr(2)>y1 && pntr(2)<y2
            set(hf,'Pointer','crosshair')
        else
            set(hf,'Pointer','arrow')
        end
    end
    function getpoints(src,evnt)
        cp = get(src,'CurrentPoint');
        button = get(hf, 'SelectionType');
        k = k+1;
        xy(k,:) = cp(1,1:2);
        if k==n
            set(hf,'Pointer','arrow')
            set(hf,'WindowButtonMotionFcn',[])
            set(ha,'ButtonDownFcn',[])
        end
    end
end

Just copy it to a new file like "ginput_ax.m" and than call it via

figure
ginput_ax(gca, N)

whereas Nis the number of points captured! Even better than ginput because uicontrol buttons work, double click is recognized and the crosshair-pointer is ONLY displayed within the actual plot, not on the grey border around the plot in the figure window :) Hope you like it!

解决方案

Found a good working solution myself, which is even nicer than ginput since the crosshair is only shown within the actual plot (hence within the axes). See my edit above!

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