fmri_input_contrast_ui.m

绝对经典,老外制作的功能强大的matlab实现PLS_TOOBOX

   fig_hdl = h0;

   return;						% init


%----------------------------------------------------------------------------
function SetupContrastRows()

   contrast_template = getappdata(gcf,'ContrastTemplate');
   contrast_hdls = getappdata(gcf,'Contrast_hlist');
   contrast_h = getappdata(gcf,'ContrastHeight');
   a_hdls = getappdata(gcf,'AddRowHdls');

   button_pos = get(findobj(gcf,'Tag','ContrastFrame'),'Position');
   top_pos = get(contrast_hdls(1,1),'Position');

   rows = floor(( top_pos(2) - button_pos(2) ) / contrast_h);
   v_pos = top_pos(2) - [0:rows-1]*contrast_h;

   edit_name_cbf = 'fmri_input_contrast_ui(''UPDATE_CONTRAST_NAME'');';
   delete_cbf = 'fmri_input_contrast_ui(''DELETE_CONTRAST'');';
   edit_value_cbf = 'fmri_input_contrast_ui(''UPDATE_CONTRAST_VALUE'');';
   plot_cbf = 'fmri_input_contrast_ui(''PLOT_CONTRAST'');';

   nr = size(contrast_hdls,1);
   if (rows < nr)			% too many rows
      for i=rows+1:nr,
          delete(contrast_hdls(i,:)); 
      end;
      contrast_hdls = contrast_hdls(1:rows,:);
   else					% add new rows
      for i=nr+1:rows,
         new_c_hdls = copyobj(contrast_template,gcf);
         contrast_hdls = [contrast_hdls; new_c_hdls'];
      end;
   end;

   v = 'on';
   for i=1:rows,

      new_c_hdls = contrast_hdls(i,:);

      pos = get(contrast_hdls(1,1),'Position');
      pos(2) = v_pos(i);
      set(new_c_hdls(1),'String','?','Position',pos,'Visible',v, ...
			'UserData',i);

      pos = get(contrast_hdls(1,2),'Position');
      pos(2) = v_pos(i);
      set(new_c_hdls(2),'String','', 'Position',pos, 'Visible',v, ...
                        'UserData',i,'Callback',edit_name_cbf);

      pos = get(contrast_hdls(1,3),'Position');
      pos(2) = v_pos(i);
      set(new_c_hdls(3),'String','Delete','Position',pos,'Visible',v, ...
                        'UserData',i,'Callback',delete_cbf);

      pos = get(contrast_hdls(1,4),'Position');
      pos(2) = v_pos(i)-.05;
      set(new_c_hdls(4),'String','', 'Position',pos, 'Visible',v, ...
                        'UserData',i,'Callback',edit_value_cbf);

      pos = get(contrast_hdls(1,5),'Position');
      pos(2) = v_pos(i)-.05;
      set(new_c_hdls(5),'String','Plot','Position',pos,'Visible',v, ...
                        'UserData',i,'Callback',plot_cbf);

   end;

   %  set up for the Add row
   for i=1:length(a_hdls),
      new_pos = get(contrast_hdls(1,i),'Position');
      set(a_hdls(i),'Position',new_pos);
   end;

   setappdata(gcf,'Contrast_hlist',contrast_hdls);
   setappdata(gcf,'NumRows',rows);

   return;					% SetupContrastRows


%----------------------------------------------------------------------------
function DisplayContrasts()

   curr_contrast = getappdata(gcf,'CurrContrasts');
   top_contrast_idx = getappdata(gcf,'TopContrastIdx');
   contrast_hdls = getappdata(gcf,'Contrast_hlist');
   rows = getappdata(gcf,'NumRows');
   view_only = getappdata(gcf,'ViewOnly');

   num_contrast = length(curr_contrast);

   last_row = 0;
   contrast_idx = top_contrast_idx;
   for i=1:rows
      c_hdls = contrast_hdls(i,:);
      if (contrast_idx <= num_contrast),
         contrast_name = curr_contrast(contrast_idx).name;
         contrast_values = curr_contrast(contrast_idx).value;
         contrast_values_str = Number2String(contrast_values);

         set(c_hdls(1),'String',sprintf('%d.',contrast_idx),'Visible','on');
         set(c_hdls(2),'String',sprintf('%s',contrast_name),'Visible','on');
         if (view_only)
             set(c_hdls(3),'String','Delete','Visible','off');
         else
             set(c_hdls(3),'String','Delete','Visible','on');
         end;
         set(c_hdls(4),'String',contrast_values_str,'Visible','on');
         set(c_hdls(5),'String','Plot','Visible','on');


         contrast_idx = contrast_idx + 1;
         last_row = i;
      else
         set(c_hdls(1),'String','','Visible','off');
         set(c_hdls(2),'String','','Visible','off');
         set(c_hdls(3),'String','Delete','Visible','off');
         set(c_hdls(4),'String','','Visible','off');
         set(c_hdls(5),'String','Plot','Visible','off');
      end;
   end;

   %  display or hide the add row
   %
   if (last_row < rows) & (view_only ~= 1)
      row_idx = last_row+1;
      c_hdls = contrast_hdls(row_idx,:);
      pos = get(c_hdls(1),'Position');
      ShowAddRow(contrast_idx,pos(2),row_idx);
   else
      HideAddRow;
   end;

   %  display or hide the slider
   %
   if (top_contrast_idx ~= 1) | (last_row == rows)
     ShowSlider;
   else
     HideSlider;
   end;

   return;						% DisplayContrasts


%----------------------------------------------------------------------------
function CreateAddRow()

   contrast_template = getappdata(gcf,'ContrastTemplate');

   a_hdls = copyobj(contrast_template,gcf);

   set(a_hdls(1),'String','','Foreground',[0 0 0],'Visible','off', ...
                 'UserData',1);

   set(a_hdls(2),'String','< Contrast Name >','Enable','on', ...
		 'HorizontalAlignment','left', ...
                 'Foreground',[0 0 0], ...
                 'Background',[1 1 1],'Visible','off');

   set(a_hdls(3),'String','Add','Enable','on', 'Visible','off', ...
		     'Callback','fmri_input_contrast_ui(''ADD_CONTRAST'');');

   set(a_hdls(4),'String','< Contrast Values >','Enable','on', ...
		 'HorizontalAlignment','left', ...
                 'Foreground',[0 0 0], ...
                 'Background',[1 1 1],'Visible','off');

   set(a_hdls(5),'String','Plot','Enable','off','Visible','off','Callback','');

   setappdata(gcf,'AddRowHdls',a_hdls);

   return;						% CreateAddRow


%----------------------------------------------------------------------------
function ShowAddRow(contrast_idx,pos,row_idx)

   a_hdls = getappdata(gcf,'AddRowHdls');

   v_pos = [pos pos pos pos-.05 pos-.05];

   for j=1:length(a_hdls),
      new_pos = get(a_hdls(j),'Position'); 
      new_pos(2) = v_pos(j);

      set(a_hdls(j),'Position',new_pos);
      set(a_hdls(j),'Visible','on');
   end;

   set(a_hdls(2),'string','<Contrast Name>');
   set(a_hdls(4),'string','<Contrast Value>');

   set(a_hdls(1),'String',sprintf('%d.',contrast_idx),'UserData',row_idx);
   set(a_hdls(3),'UserData',row_idx);

   return;						% ShowAddRow


%----------------------------------------------------------------------------
function HideAddRow()

   a_hdls = getappdata(gcf,'AddRowHdls');
   for j=1:length(a_hdls),
      set(a_hdls(j),'Visible','off');
   end;

   return;						% HideAddRow


%----------------------------------------------------------------------------
function UpdateContrastName(contrast_idx)

   view_only = getappdata(gcf,'ViewOnly');

   curr_contrast = getappdata(gcf,'CurrContrasts');
   contrast_hdls = getappdata(gcf,'Contrast_hlist');

   row_idx = get(gcbo,'UserData');
   contrast_idx = str2num(get(contrast_hdls(row_idx,1),'String'));

   if (view_only),		% don't allow changing contrast name 
      set(gcbo,'String',curr_contrast(contrast_idx).name); 
      msg = 'ERROR: Contrast name cannot be changed.';
      set(findobj(gcf,'Tag','MessageLine'),'String',msg);
      return;
   end;

   curr_contrast(contrast_idx).name = deblank(get(gcbo,'String'));

   setappdata(gcf,'CurrContrasts',curr_contrast);

   return;						% UpdateContrastName

%----------------------------------------------------------------------------
function UpdateContrastValue(contrast_idx)

   view_only = getappdata(gcf,'ViewOnly');

   curr_contrast = getappdata(gcf,'CurrContrasts');
   contrast_hdls = getappdata(gcf,'Contrast_hlist');
   conditions = getappdata(gcf,'Conditions');

   row_idx = get(gcbo,'UserData');
   contrast_idx = str2num(get(contrast_hdls(row_idx,1),'String'));

   if (view_only),		% don't allow changing contrast name 
      contrast_values = curr_contrast(contrast_idx).value;
      contrast_values_str = Number2String(contrast_values);
      set(gcbo,'String',contrast_values_str);

      msg = 'ERROR: Contrast values cannot be changed.';
      set(findobj(gcf,'Tag','MessageLine'),'String',msg);
     return;
   end;

   contrast_values = str2num(get(gcbo,'String'));

   if isempty(contrast_values)
      msg = 'ERROR: Invalid contrast values.';
      set(findobj(gcf,'Tag','MessageLine'),'String',msg);
      return;
   end;

   if length(conditions) ~= length(contrast_values),
      msg = 'ERROR: The number of contrast values does not match the number of conditions.';
      set(findobj(gcf,'Tag','MessageLine'),'String',msg);
      return;
   end;


   curr_contrast(contrast_idx).value = contrast_values;

   % verify the contrasts are linear independent
   %
   num_contrasts = length(curr_contrast);
   contrast_mat = []; 
   for i=1:num_contrasts;
     if ~isempty(curr_contrast(i).value) 
        contrast_mat = [contrast_mat; curr_contrast(i).value];
     end;
   end;

   if (rank(contrast_mat) ~= size(contrast_mat,1))
      msg = 'ERROR:  The specified contrast is not linear independent to the others.';
      set(findobj(gcf,'Tag','MessageLine'),'String',msg);
      return;
   end;

   setappdata(gcf,'CurrContrasts',curr_contrast);

   PlotContrast;

   return;						% UpdateContrastValue


%----------------------------------------------------------------------------
function DeleteContrast()

   curr_contrast = getappdata(gcf,'CurrContrasts');
   contrast_hdls = getappdata(gcf,'Contrast_hlist');

   row_idx = get(gcbo,'UserData');
   contrast_idx = str2num(get(contrast_hdls(row_idx,1),'String'));

   mask = ones(1,length(curr_contrast));  mask(contrast_idx) = 0;
   idx = find(mask == 1);
   curr_contrast = curr_contrast(idx);

   setappdata(gcf,'CurrContrasts',curr_contrast);

   DisplayContrasts;
   UpdateSlider;

   return;						% DeleteContrast


%----------------------------------------------------------------------------
function AddContrast()

   conditions = getappdata(gcf,'Conditions');
   if isempty(conditions),
      msg = sprintf('Cannot add contrasts without loading conditions first.');
      set(findobj(gcf,'Tag','MessageLine'),'String',['ERROR: ', msg]);
      return;
   end;

   curr_contrast = getappdata(gcf,'CurrContrasts');
   old_contrast = curr_contrast;		% save, in case roll back

   rows = getappdata(gcf,'NumRows');
   a_hdls = getappdata(gcf,'AddRowHdls');

   contrast_idx = str2num(get(a_hdls(1),'String'));
   contrast_name = get(a_hdls(2),'String');
   contrast_value = get(a_hdls(4),'String');

   num_contrast = length(curr_contrast)+1;

%   curr_contrast(num_contrast).name = '';
%   curr_contrast(num_contrast).value = [];

   curr_contrast(num_contrast).name = contrast_name;
   curr_contrast(num_contrast).value = contrast_value;

   setappdata(gcf,'CurrContrasts',curr_contrast);

   UpdateContrastName2;
   err = UpdateContrastValue2;

   if err
      setappdata(gcf,'CurrContrasts',old_contrast);	% roll back
      return;
   end

   new_contrast_row = get(a_hdls(1),'UserData');

   if (new_contrast_row == rows),  	% the new contrast row is the last row
      top_contrast_idx = getappdata(gcf,'TopContrastIdx');
      setappdata(gcf,'TopContrastIdx',top_contrast_idx+1);
   end;

   DisplayContrasts;

   contrast_hdls = getappdata(gcf,'Contrast_hlist');
   if (new_contrast_row == rows),  	% the new contrast row is the last row
      set(gcf,'CurrentObject',contrast_hdls(rows-1,2));
   else
      set(gcf,'CurrentObject',contrast_hdls(new_contrast_row,2));
   end;

   UpdateSlider;

   return;						% AddContrasts


%----------------------------------------------------------------------------
function MoveSlider()

   slider_hdl = findobj(gcf,'Tag','ContrastSlider');
   curr_value = round(get(slider_hdl,'Value'));
   total_rows = round(get(slider_hdl,'Max'));

   top_contrast_idx = total_rows - curr_value + 1;

   setappdata(gcf,'TopContrastIdx',top_contrast_idx);

   DisplayContrasts;

   return;						% MoveSlider


%----------------------------------------------------------------------------
function SetupSlider()

   contrast_hdls = getappdata(gcf,'Contrast_hlist');
   top_pos = get(contrast_hdls(1),'Position');
   bottom_pos = get(contrast_hdls(end),'Position');

   slider_hdl = findobj(gcf,'Tag','ContrastSlider');
   pos = get(slider_hdl,'Position');
   pos(2) = bottom_pos(2);
   pos(4) = top_pos(2)+top_pos(4) - pos(2);
   set(slider_hdl,'Position', pos);

   return;						% SetupSlider


%----------------------------------------------------------------------------
function UpdateSlider()

   top_contrast_idx = getappdata(gcf,'TopContrastIdx');
   rows = getappdata(gcf,'NumRows');

   curr_contrast = getappdata(gcf,'CurrContrasts');
   num_contrast = length(curr_contrast);

   total_rows = num_contrast+1;
   slider_hdl = findobj(gcf,'Tag','ContrastSlider');

   if (num_contrast ~= 0)		% don't need to update when no contrast
      set(slider_hdl,'Min',1,'Max',total_rows, ...
                  'Value',total_rows-top_contrast_idx+1, ...
                  'Sliderstep',[1/(total_rows-1)-0.00001 1/(total_rows-1)]); 
   end;
   
   return;						% UpdateSlider


%----------------------------------------------------------------------------
function ShowSlider()

   slider_hdl = findobj(gcf,'Tag','ContrastSlider');
   set(slider_hdl,'visible','on');