MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manuel d'utilisateur télécharger pdf (Page 309)

Color Palette

12-31

Just before returning, colorPalette assigns mOutputArgs the function handle

for its

getSelectedColor helper function and then assigns mOutputArgs to

varargout to return the arguments.

% Return user defined output if it is requested

mOutputArgs{1} =@getSelectedColor;

if nargout>0

[varargout{1:nargout}] = mOutputArgs{:};

end

The iconEditor executes the colorPalette’s getSeclectedColor function

whenever it invokes the function that colorPalette returns to it.

function color = getSelectedColor

% function returns the currently selected color in this

% colorPlatte

color = mSelectedColor;

The iconEditor GUI.

The iconEditor function calls colorPalette only once and

specifies its parent to be a panel in the iconEditor.

% Host the ColorPalette in the PaletteContainer and keep the

% function handle for getting its selected color for editing

% icon.

mGetColorFcn = colorPalette('parent', hPaletteContainer);

This call creates the colorPalette as a component of the iconEditor and then

returns a function handle that

iconEditor can call to get the currently selected

color.

The iconEditor’s

localEditColor helper function calls mGetColorFcn, the

function returned by

colorPalette, to execute the colorPalette’s

getSelectedColor function.

function localEditColor

% helper function that changes the color of an icon data

% point to that of the currently selected color in

% colorPalette

if mIsEditingIcon

pt = get(hIconEditAxes,'currentpoint');

x = ceil(pt(1,1));

y = ceil(pt(1,2));

color = mGetColorFcn();

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manuel d'utilisateur Page 309