accelopt.m

数字通信第四版原书的例程

function dlg_h = accelopt(sbCmd, model_h)
%	ACCELOPT generated by MKDLG 31-Mar-93, 12:13:12 AM.
%	ACCELOPT creates and manages the 'Accelerator Options...'
%	dialog for a SIMULINK block diagram.
%

%	Rick Spada  11-26-92
%	Copyright (c) 1990-94 by The MathWorks, Inc.

% no arguments implies create the dialog
if nargin==0,
  sbCmd='create';
  model_h=get_param(get_param,'handle');
elseif nargin==1,
  dlg_h=gcf;
  uictl_arr=get(dlg_h,'User');
  if nargin < 2,
	model_h=uictl_arr(length(uictl_arr));
  end;
end;

%
%-----------------------------------------------------------------
% The following switchboard commands, defined by sbCmd, are
% accepted by accelopt:
%
%	'create' -             create the dialog
%   'Compile command' -    change the 'Compile command'
%   'Done' -               close the dialog
%   'Revert' -             revert the dialog to its original state
%   'Help' -               present the help dialog
%	'motion' -             mouse motion callback
%   'Name check'
%
% anything else is simply ignored...
%-----------------------------------------------------------------
%

%
%--- C R E A T E -------------------------------------------------
%   
%

if strcmp(sbCmd,'create'),
  
  % first check to see if a dialog already exists, if so, and
  % it's a valid figure handle, just bring it forward
  dlg_h=get_param(model_h,'Accelerator options dialog');
  if ~isempty(dlg_h),
	if ~isempty(find(dlg_h==get(0,'Children'))),
	  figure(dlg_h);
	  return;
	end;
  end;
  
  % Compute the font characteristics, and from that the dialog
  % position.
  fontSize=get(0,'DefaultTextFontSize');
  colW=fontSize+1;
  rowH=1.33*(fontSize+2);
  margin=max(rowH,colW);
  screenSize=get(0,'ScreenSize');
  dlgPos=round([(screenSize(1)+screenSize(3)-25*colW)/2,...
		  (screenSize(2)+screenSize(4)-4*rowH)/2,...
		  colW*25+margin,...
		  rowH*4.6+margin]);
  dlgWidth=dlgPos(3);
  dlgHeight=dlgPos(4);
  modelName=get_param(model_h,'name');
  dlgName=[get_param(model_h,'name'),' - Accelerator Options'];
  
  % set some defaults to eliminate visible changes
  defBG=get(0,'DefaultuicontrolBackgroundColor');
  defFigColor=get(0,'DefaultFigureColor');
  defFigNumberTitle=get(0,'DefaultFigureNumberTitle');
  set(0,'DefaultFigureColor',defBG,...
        'DefaultFigureNumberTitle','off');

  % Create a figure for the dialog.
  dlg_h = figure('Position',dlgPos,...                 % position the dialog
	         'Visible','off',...                   % make it visible
	         'Name',dlgName,...                    % give the dialog a name
	         'MenuBar','none',...                  % no menu bar
	         'NextPlot','New',...                  % prevent plot from overwriting it
                 'Units','Pixel',...                   % pixel coordinates
	         'DefaultTextFontName','Helvetica',... % use helvetica for the font
	         'DefaultTextFontSize',12);            % use point size 12

  set(0,'DefaultFigureColor',defFigColor,...
        'DefaultFigureNumberTitle',defFigNumberTitle);
  
  % Create the uicontrols
  uictl_arr = -1 * ones(1,5);
  
  % --------------------+ Item 1 +--------------------

  % Create a uicontrol of type 'Frame'
  h = uicontrol(dlg_h,...
		  'Style','Frame',...
		  'Units','norm',...
		  'BackgroundColor',get(0,'DefaultuicontrolBackgroundColor'),...
		  'String','dummy',...
		  'Position',[(0*colW + margin/2)/dlgWidth,...
		  (2*rowH + margin/2)/dlgHeight,...
		  25*colW/dlgWidth,...
		  2.2*rowH/dlgHeight]);

  % Accumulate this control into the uictl array
  uictl_arr(1) = h;
  
  % --------------------+ Item 2 +--------------------
  
  % Create a uicontrol of type 'Text'
  h = uicontrol(dlg_h,...
		  'Style','Text',...
		  'Units','norm',...
		  'BackgroundColor',get(0,'DefaultuicontrolBackgroundColor'),...
		  'String',' Compile command',...
		  'Position',[(0.5*colW + margin/2)/dlgWidth,...
		  (3.6*rowH + margin/2)/dlgHeight,...
		  9.8*colW/dlgWidth,...
		  1.1*rowH/dlgHeight]);

  % Set the property list
  set(h, 'HorizontalAlignment', 'Left');
  
  % Accumulate this control into the uictl array
  uictl_arr(2) = h;
  
  % --------------------+ Item 3 +--------------------
  
  % Create a uicontrol of type 'Edit'
  h = uicontrol(dlg_h,...
		  'Style','Edit',...
		  'Units','norm',...
		  'BackgroundColor',get(0,'DefaultuicontrolBackgroundColor'),...
		  'HorizontalAlignment','Left',...
		  'String','dummy',...
		  'Position',[(0.5*colW + margin/2)/dlgWidth,...
		  (2.5*rowH + margin/2)/dlgHeight,...
		  24*colW/dlgWidth,...
		  1.1*rowH/dlgHeight]);

  % Edit boxes have their background set to white
  set (h,'BackgroundColor',[1, 1, 1]);

  % Set the property list
  cmd=get_param(model_h,'Compile command');
  set(h,'String',cmd,'UserData',cmd);
  
  % Accumulate this control into the uictl array
  uictl_arr(3) = h;

  % --------------------+ Item 4 +--------------------
  
  % Create a uicontrol of type 'PushButton'
  h = uicontrol(dlg_h,...
		  'Style','PushButton',...
		  'Units','norm',...
		  'BackgroundColor',get(0,'DefaultuicontrolBackgroundColor'),...
		  'String','Help',...
		  'Position',[(0*colW + margin/2)/dlgWidth,...
		  (0*rowH + margin/2)/dlgHeight,...
		  7*colW/dlgWidth,...
		  1.1*rowH/dlgHeight]);

  % Accumulate this control into the uictl array
  uictl_arr(4) = h;

  % --------------------+ Item 5 +--------------------
  
  % Create a uicontrol of type 'PushButton'
  h = uicontrol(dlg_h,...
		  'Style','PushButton',...
		  'Units','norm',...
		  'BackgroundColor',get(0,'DefaultuicontrolBackgroundColor'),...
		  'String','Revert',...
		  'Position',[(9*colW + margin/2)/dlgWidth,...
		  (0*rowH + margin/2)/dlgHeight,...
		  7*colW/dlgWidth,...
		  1.1*rowH/dlgHeight]);

  % Accumulate this control into the uictl array
  uictl_arr(5) = h;
  
  % --------------------+ Item 6 +--------------------
  
  % Create a uicontrol of type 'PushButton'
  h = uicontrol(dlg_h,...
		  'Style','PushButton',...
		  'Units','norm',...
		  'BackgroundColor',get(0,'DefaultuicontrolBackgroundColor'),...
		  'String','Done',...
		  'Position',[(18*colW + margin/2)/dlgWidth,...
		  (0*rowH + margin/2)/dlgHeight,...
		  7*colW/dlgWidth,...
		  1.1*rowH/dlgHeight]);

  % Set the property list
  set(h, 'Enable','on');
  
  % Accumulate this control into the uictl array
  uictl_arr(6) = h;
  
  % -------------------------------------------------------

  % Add the callbacks.

  nameCheckCB='accelopt(''Name check'');';
  set(dlg_h,'KeyPressFcn',nameCheckCB,...
		    'WindowButtonDownFcn',nameCheckCB,...
			'WindowButtonUpFcn',nameCheckCB,...
			'ButtonDownFcn',nameCheckCB);
  set(uictl_arr(3),'Callback','accelopt(''Compile command'');');
  set(uictl_arr(4),'Callback','accelopt(''Help'');');
  set(uictl_arr(5),'Callback','accelopt(''Revert'');');
  set(uictl_arr(6),'Callback','accelopt(''Done'');');
  
  % -------------------------------------------------------

  % Add the block diagram handle to the uictl_arr
  uictl_arr=[uictl_arr,model_h];

  % stuff the uicontrols into the 'UserData' property of the figure
  set(dlg_h,'Visible','on','UserData',uictl_arr);

  return;
  
end   % create

%
%-----------------------------------------------------------------

%
%--- N A M E   C H E C K -----------------------------------------
% For all other commands, make sure that the name presented in
% the dialog is consistent with the name of the block diagram.
% It is quite possible that the user has save the block diagram
% under a different name.
%

dlgName=[get_param(model_h,'name'),' - Accelerator Options'];
if ~strcmp(dlgName,get(dlg_h,'Name')),
  set(dlg_h,'Name',dlgName);
end;

%
%-----------------------------------------------------------------
%
%--- C O M P I L E   C O M M A N D  ------------------------------
%   
%

if strcmp(sbCmd,'Compile command'),

  compileCommand=get(gco,'String');
  set_param(model_h,'Compile command',compileCommand);
  return;
  
end   % Compile command

%
%-----------------------------------------------------------------

%
%--- D O N E -----------------------------------------------------
%   
%

if strcmp(sbCmd,'Done'),

  % make the dialog invisible while I save the current settings
  set(dlg_h,'Visible','Off');

  % save the current settings of the important players in their
  % 'UserData' for the Revert call
  
  set(uictl_arr(3),'User',get(uictl_arr(3),'String'));

  return;
  
end;

%
%-----------------------------------------------------------------

%
%--- R E V E R T -------------------------------------------------
%   
%

if strcmp(sbCmd,'Revert'),

  % get the original 'Compile command'
  compileCommand=get(uictl_arr(3),'UserData');

  % first take care of the block diagram's parameters
  set_param(model_h,'Compile command',compileCommand);

  % now the Edit box
  set(uictl_arr(3),'String',compileCommand);

  return;
  
end;

%
%-----------------------------------------------------------------

%
%--- H E L P -----------------------------------------------------
%   
%

if strcmp(sbCmd,'Help'),

  % call the help dialog for the accelerator options
  helpdlg('accelopt.hlp', 'Accelerator Options Help');
  return;
  
end;

%
%-----------------------------------------------------------------