Image processing 我想在Matlab中禁用一个按钮
我有一个图像,滑块和一个按钮。 通过移动滑块旋转图像,通过按下按钮保存图像。 还有一个文本框,用于写入旋转角度。 我想禁用按钮,直到用户移动到滑块。 (滑块可以返回到初始状态) 这是密码Image processing 我想在Matlab中禁用一个按钮,image-processing,matlab,matlab-guide,Image Processing,Matlab,Matlab Guide,我有一个图像,滑块和一个按钮。 通过移动滑块旋转图像,通过按下按钮保存图像。 还有一个文本框,用于写入旋转角度。 我想禁用按钮,直到用户移动到滑块。 (滑块可以返回到初始状态) 这是密码 function [angle] = rotationGUI() I = imread('frames/001.jpg'); %# c hFig = figure('menu','none'); hAx = axes('Parent',hFig); hTxt = u
function [angle] = rotationGUI()
I = imread('frames/001.jpg');
%# c
hFig = figure('menu','none');
hAx = axes('Parent',hFig);
hTxt = uicontrol('Style','text', 'Position',[290 28 20 15], 'String','0');
uicontrol('Parent',hFig, 'Style','slider', 'Value',0, 'Min',0,...
'Max',360, 'SliderStep',[1 10]./360, ...
'Position',[150 5 300 20], 'Callback',{@slider_callback,I,hAx,hTxt,hFig})
uicontrol(hFig,'Style','pushbutton','String','Save and Close',...
'Position',[10 20 120 40],'Callback',{@ok_Callback,I,hTxt,hFig,'frames/001.jpg'});
%# show image
imshow(I, 'Parent',hAx)
%# Callback function
return;
end
function slider_callback(hObj, eventdata,I,hAx,hTxt,hFig)
global angle
global Irot
angle = round(get(hObj,'Value')); %# get rotation angle in degrees
Irot = imrotate(I,angle);
imshow(Irot, 'Parent',hAx) %# rotate image
if (angle==0)
angle=360;
end
set(hTxt, 'String',num2str(angle)) %# update text
end
function ok_Callback(hObj, eventdata,I,hTxt,hFig,path1)
global Irot
global angle
set(hTxt, 'String','save')
imwrite(Irot,path1);
delete(hFig);
end
你应该给你的按钮一个每个功能都可以访问的句柄,就像这样
h.Button=uicontrol(hFig,'Style','pushbutton',...
然后将句柄赋予其他函数,可以通过将回调设置为{}来停用它,也可以不显示它,而不希望单击它。看起来像这样:
set(h.Button,'callback',{});
或
当然,当您希望回调或可见选项再次工作时,必须将其设置为正确的回调或“开”。我认为您可以自己找到在代码中插入它的位置:)
希望这对您有所帮助。您需要为按钮提供如下手柄:
按钮handle=uicontrol(…)
当您声明按钮时,您需要在按钮的组件中添加一行以禁用按钮:,“enable”,“off”
然后需要将其作为参数传递给slider函数回调,然后在slider函数中设置一行(buttonhandle,'enable','on')
您的按钮声明必须位于滑块声明之上,否则滑块回调函数将接收无效参数。tnx,谢谢您的帮助!!!!! 你帮了我很多 最后的代码是
function [angle] = rotationGUI()
I = imread('frames/001.jpg');
%# c
hFig = figure('menu','none');
hAx = axes('Parent',hFig);
global hButton;
hTxt = uicontrol('Style','text', 'Position',[290 28 20 15], 'String','0');
uicontrol('Parent',hFig, 'Style','slider', 'Value',0, 'Min',0,...
'Max',360, 'SliderStep',[1 10]./360, ...
'Position',[150 5 300 20], 'Callback',{@slider_callback,I,hAx,hTxt,hFig})
hButton=uicontrol(hFig,'Style','pushbutton','String','Save and Close',...
'Position',[10 20 120 40],'Callback',{@ok_Callback,I,hTxt,hFig,'frames/001.jpg'});
set(hButton,'Enable','off');
imshow(I, 'Parent',hAx)
return;
end
function slider_callback(hObj, eventdata,I,hAx,hTxt,hFig)
global angle
global Irot
global hButton
set(hButton,'Enable','on');
angle = round(get(hObj,'Value')); %# get rotation angle in degrees
Irot = imrotate(I,angle);
imshow(Irot, 'Parent',hAx) %# rotate image
if (angle==0)
angle=360;
end
set(hTxt, 'String',num2str(angle)) %# update text
end
function ok_Callback(hObj, eventdata,I,hTxt,hFig,path1)
global Irot
global angle
set(hTxt, 'String','save')
imwrite(Irot,path1);
delete(hFig);
end
function [angle] = rotationGUI()
I = imread('frames/001.jpg');
%# c
hFig = figure('menu','none');
hAx = axes('Parent',hFig);
global hButton;
hTxt = uicontrol('Style','text', 'Position',[290 28 20 15], 'String','0');
uicontrol('Parent',hFig, 'Style','slider', 'Value',0, 'Min',0,...
'Max',360, 'SliderStep',[1 10]./360, ...
'Position',[150 5 300 20], 'Callback',{@slider_callback,I,hAx,hTxt,hFig})
hButton=uicontrol(hFig,'Style','pushbutton','String','Save and Close',...
'Position',[10 20 120 40],'Callback',{@ok_Callback,I,hTxt,hFig,'frames/001.jpg'});
set(hButton,'Enable','off');
imshow(I, 'Parent',hAx)
return;
end
function slider_callback(hObj, eventdata,I,hAx,hTxt,hFig)
global angle
global Irot
global hButton
set(hButton,'Enable','on');
angle = round(get(hObj,'Value')); %# get rotation angle in degrees
Irot = imrotate(I,angle);
imshow(Irot, 'Parent',hAx) %# rotate image
if (angle==0)
angle=360;
end
set(hTxt, 'String',num2str(angle)) %# update text
end
function ok_Callback(hObj, eventdata,I,hTxt,hFig,path1)
global Irot
global angle
set(hTxt, 'String','save')
imwrite(Irot,path1);
delete(hFig);
end