www.gusucode.com > GUI的布局工具箱 > GUI的布局工具箱/GUI的布局工具箱/GUILayout-v1p10/+uiextras/Grid.m
classdef Grid < uiextras.Container
%Grid Container with contents arranged in a grid
%
% obj = uiextras.Grid() creates a new new grid layout with all
% properties set to defaults. The number of rows and columns to use
% is determined from the number of elements in the RowSizes and
% ColumnSizes properties respectively. Child elements are arranged
% down column one first, then column two etc. If there are
% insufficient columns then a new one is added. The output is a new
% layout object that can be used as the parent for other
% user-interface components. The output is a new layout object that
% can be used as the parent for other user-interface components.
%
% obj = uiextras.Grid(param,value,...) also sets one or more
% parameter values.
%
% See the <a href="matlab:doc uiextras.Grid">documentation</a> for more detail and the list of properties.
%
% Examples:
% >> f = figure();
% >> g = uiextras.Grid( 'Parent', f, 'Spacing', 5 );
% >> uicontrol( 'Style', 'frame', 'Parent', g, 'Background', 'r' )
% >> uicontrol( 'Style', 'frame', 'Parent', g, 'Background', 'b' )
% >> uicontrol( 'Style', 'frame', 'Parent', g, 'Background', 'g' )
% >> uiextras.Empty( 'Parent', g )
% >> uicontrol( 'Style', 'frame', 'Parent', g, 'Background', 'c' )
% >> uicontrol( 'Style', 'frame', 'Parent', g, 'Background', 'y' )
% >> set( g, 'ColumnSizes', [-1 100 -2], 'RowSizes', [-1 100] );
%
% See also: uiextras.GridFlex
% Copyright 2009-2010 The MathWorks, Inc.
% $Revision: 367 $
% $Date: 2011-02-10 16:25:22 +0000 (Thu, 10 Feb 2011) $
properties( SetObservable )
Padding = 0 % padding around and between contents [pixels]
Spacing = 0 % spacing between contents [pixels]
end % public properties
properties( Dependent )
RowSizes % column vector of row sizes, with positive elements for absolute sizes (pixels) and negative elements for relative sizes
ColumnSizes % column vector of column sizes, with positive elements for absolute sizes (pixels) and negative elements for relative sizes
MinimumRowSizes % minimum size (in pixels) for each row
MinimumColumnSizes % minimum size (in pixels) for each column
end % dependent properties
properties( Access=private )
end % private properties
properties( Access = private )
RowSizes_ = zeros( 0, 1 ) % private property for storing actual row sizes
ColumnSizes_ = zeros( 0, 1 ) % private property for storing actual column sizes
MinimumRowSizes_ = zeros( 0, 1 ) % private property for storing actual minimum row sizes
MinimumColumnSizes_ = zeros( 0, 1 ) % private property for storing actual minimum column sizes
end % private properties
methods
function obj = Grid( varargin )
%Grid Create a container with contents in a grid.
% First step is to create the parent class. We pass the
% arguments (if any) just incase the parent needs setting
obj@uiextras.Container( varargin{:} );
% Set some defaults
obj.setPropertyFromDefault( 'Padding' );
obj.setPropertyFromDefault( 'Spacing' );
% Set user-supplied property values (only if this is the leaf class)
if nargin>0 && isequal( class( obj ), 'uiextras.Grid' )
set( obj, varargin{:} );
end
end % constructor
end % public methods
methods
function set.RowSizes( obj, value )
% Check
if ~isvector( value )
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''RowSizes'' must be a vector.' )
elseif ~isnumeric( value ) || ...
any( ~isreal( value ) ) || any( isnan( value ) ) || any( ~isfinite( value ) )
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''RowSizes'' must consist of real, finite, numeric values.' )
end
% Set
obj.RowSizes_ = value(:);
% Make sure min row sizes is the same length
nMinSizes = length(obj.MinimumRowSizes_);
nSizes = length(obj.RowSizes_);
if nMinSizes > nSizes
obj.MinimumRowSizes_ = obj.MinimumRowSizes_(1:nSizes);
elseif nMinSizes < nSizes
obj.MinimumRowSizes_(end+1:nSizes,1) = 1;
end
% Add/remove elements to/from ColumnSizes, if required
nColumns = ceil( numel( obj.Children ) / numel( obj.RowSizes_ ) );
if numel( obj.ColumnSizes_ ) > nColumns
obj.ColumnSizes_(nColumns+1:end,:) = [];
obj.MinimumColumnSizes_(nColumns+1:end,:) = [];
elseif numel( obj.ColumnSizes ) < nColumns
obj.ColumnSizes_(end+1:nColumns,1) = -1;
obj.MinimumColumnSizes_(end+1:nColumns,1) = 1;
end
% Redraw
obj.redraw();
end % set.RowSizes
function value = get.RowSizes( obj )
value = obj.RowSizes_;
end % get.RowSizes
function set.ColumnSizes( obj, value )
% Check
if ~isvector( value )
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''ColumnSizes'' must be a vector.' )
elseif ~isnumeric( value ) || ...
any( ~isreal( value ) ) || any( isnan( value ) ) || any( ~isfinite( value ) )
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''ColumnSizes'' must consist of real, finite, numeric values.' )
end
% Set
obj.ColumnSizes_ = value(:);
% Make sure min row sizes is the same length
nMinSizes = length(obj.MinimumColumnSizes_);
nSizes = length(obj.ColumnSizes_);
if nMinSizes > nSizes
obj.MinimumColumnSizes_ = obj.MinimumColumnSizes_(1:nSizes);
elseif nMinSizes < nSizes
obj.MinimumColumnSizes_(end+1:nSizes,1) = 1;
end
% Add/remove elements to/from RowSizes, if required
nRows = ceil( numel( obj.Children ) / numel( obj.ColumnSizes_ ) );
if numel( obj.RowSizes_ ) > nRows
obj.RowSizes_(nRows+1:end,:) = [];
obj.MinimumRowSizes_(nRows+1:end,:) = [];
elseif numel( obj.RowSizes ) < nRows
obj.RowSizes_(end+1:nRows,1) = -1;
obj.MinimumRowSizes_(end+1:nRows,1) = 1;
end
% Redraw
obj.redraw();
end % set.ColumnSizes
function value = get.ColumnSizes( obj )
value = obj.ColumnSizes_;
end % get.ColumnSizes
function set.MinimumRowSizes( obj, value )
% Check that this vector matches the size vector
if ~isequal( numel( obj.RowSizes ), numel( value ) )
error( 'GUILayout:InvalidPropertyValue', ...
'Size of property ''MinimumRowSizes'' must match size of property ''RowSizes''.' )
elseif ~isnumeric( value ) || ...
any( ~isreal( value ) ) || any( isnan( value ) ) || any( ~isfinite( value ) )
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''MinimumRowSizes'' must consist of real, finite, numeric values.' )
end
% Set and redraw
obj.MinimumRowSizes_ = value(:)';
obj.redraw();
end % set.MinimumRowSizes
function value = get.MinimumRowSizes( obj )
value = obj.MinimumRowSizes_;
end % get.MinimumRowSizes
function set.MinimumColumnSizes( obj, value )
% Check that this vector matches the size vector
if ~isequal( numel( obj.ColumnSizes ), numel( value ) )
error( 'GUILayout:InvalidPropertyValue', ...
'Size of property ''MinimumColumnSizes'' must match size of property ''RowSizes''.' )
elseif ~isnumeric( value ) || ...
any( ~isreal( value ) ) || any( isnan( value ) ) || any( ~isfinite( value ) )
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''MinimumColumnSizes'' must consist of real, finite, numeric values.' )
end
% Set and redraw
obj.MinimumColumnSizes_ = value(:)';
obj.redraw();
end % set.MinimumColumnSizes
function value = get.MinimumColumnSizes( obj )
value = obj.MinimumColumnSizes_;
end % get.MinimumColumnSizes
function set.Padding( obj, value )
% Check
if ~isnumeric( value ) || ~isscalar( value ) || ...
~isreal( value ) || isnan( value ) || ~isfinite( value ) || ...
value < 0 || rem( value, 1 ) ~= 0
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''Padding'' must be a nonnegative integer.' )
end
% Set
obj.Padding = value;
% Redraw
obj.redraw();
end % set.Padding
function set.Spacing( obj, value )
% Check
if ~isnumeric( value ) || ~isscalar( value ) || ...
~isreal( value ) || isnan( value ) || ~isfinite( value ) || ...
value < 0 || rem( value, 1 ) ~= 0
error( 'GUILayout:InvalidPropertyValue', ...
'Property ''Spacing'' must be a nonnegative integer.' )
end
% Set
obj.Spacing = value;
% Redraw
obj.redraw();
end % set.Spacing
end % accessor methods
methods( Access = protected )
function [widths,heights] = redraw( obj )
%REDRAW Redraw container contents.
% Get container width and height
totalPosition = ceil( getpixelposition( obj.UIContainer ) );
totalWidth = totalPosition(3);
totalHeight = totalPosition(4);
% Get children
children = obj.Children;
nChildren = numel( children );
% Get padding, spacing, widths and heights
padding = obj.Padding;
spacing = obj.Spacing;
columnSizes = obj.ColumnSizes;
minColumnSizes = obj.MinimumColumnSizes;
rowSizes = obj.RowSizes;
minRowSizes = obj.MinimumRowSizes;
nColumns = numel( columnSizes );
nRows = numel( rowSizes );
% Compute widths and heights
widths = uiextras.calculatePixelSizes( totalWidth, ...
columnSizes, minColumnSizes, ...
obj.Padding, obj.Spacing );
heights = uiextras.calculatePixelSizes( totalHeight, ...
rowSizes, minRowSizes, ...
obj.Padding, obj.Spacing );
% Compute and set new positions in pixels
elementNumbers = reshape( 1:nRows*nColumns, [nRows, nColumns] );
rowNumbers = repmat( transpose( 1:nRows ), [1, nColumns] );
columnNumbers = repmat( 1:nColumns, [nRows, 1] );
for ii = 1:nChildren
child = children(ii);
jj = rowNumbers(elementNumbers==ii); % row index
kk = columnNumbers(elementNumbers==ii); % column index
x = sum( widths(1:kk-1) ) + padding + spacing * (kk-1) + 1;
y = totalHeight - sum( heights(1:jj) ) - padding - spacing*(jj-1) + 1;
newPosition = [x, y, widths(kk), heights(jj)];
obj.repositionChild( child, newPosition );
end
end % redraw
function onChildAdded( obj, source, eventData ) %#ok<INUSD>
%onChildAdded: Callback that fires when a child is added to a container.
% Add element to RowSizes, if required
if numel( obj.RowSizes_ ) == 0
obj.RowSizes_ = -1;
obj.MinimumRowSizes_ = 1;
end
% Add element to ColumnSizes, if required
nColumns = ceil( numel( obj.Children ) / numel( obj.RowSizes_ ) );
if numel( obj.ColumnSizes_ ) < nColumns
obj.ColumnSizes_(end+1:nColumns,:) = -1;
obj.MinimumColumnSizes_(end+1:nColumns,:) = 1;
end
obj.redraw();
end % onChildAdded
function onChildRemoved( obj, source, eventData ) %#ok<INUSD>
%onChildAdded: Callback that fires when a container child is destroyed or reparented.
if numel( obj.Children ) == 0
% Remove elements from RowSizes and ColumnSizes
obj.RowSizes_ = zeros( 0, 1 );
obj.ColumnSizes_ = zeros( 0, 1 );
obj.MinimumRowSizes_ = zeros( 0, 1 );
obj.MinimumColumnSizes_ = zeros( 0, 1 );
else
% Remove elements from ColumnSizes, if required
nColumns = ceil( numel( obj.Children ) / numel( obj.RowSizes_ ) );
if numel( obj.ColumnSizes_ ) > nColumns
obj.ColumnSizes_(nColumns+1:end,:) = [];
obj.MinimumColumnSizes_(nColumns+1:end,:) = [];
end
end
% Redraw
obj.redraw();
end % onChildRemoved
end % protected methods
end % classdef