问题
Is there a ready made progress bar uicontrol that can be added to Matlab gui, either uicontrol or ActiveX component?
[edit] I know about the waitbar function, I meant a component that can be implemented into the designed GUI and not just pop out of the window. Something like battery status in status bar.
回答1:
Waitbar and its variants display a popup window with a status bar. In most applications this is ok and very simple to use.
If you want to integrate a progress-bar within an existing GUI window, you have several choices:
- implement the internal waitbar code - this is really just an axes that presents a colored patch whose width depends on the progress value.
- use the standard java.swing.JProgressBar, which can be added to your Matlab GUI via the built-in javacomponent function
- use the StatusBar utility or the explanation here to add a progress bar to your GUI window's status-bar
All of these choices work on all Matlab platforms.
回答2:
Yes, there is. The waitbar function is what you need. The examples there are easy to follow and you can get started right away. It should work fine on all 3 platforms (Windows/OS X/Linux).
回答3:
Adapting my code from this MatLab Newgroup comment, I was able to put together the following:
function h = uiProgressBar(varargin)
%uiProgressBar: A waitbar that can be embedded in a GUI figure.
if ishandle(varargin{1}) && size(varargin, 2) > 1
ax = varargin{1};
value = varargin{2};
p = get(ax,'Child');
x = get(p,'XData');
x(3:4) = value;
set(p,'XData',x)
return
end
bg_color = 'w';
fg_color = 'r';
h = axes('Units','pixels',...
'XLim',[0 1],'YLim',[0 1],...
'XTick',[],'YTick',[],...
'Color',bg_color,...
'XColor',bg_color,'YColor',bg_color, ...
'Parent', varargin{1});
patch([0 0 0 0],[0 1 1 0],fg_color,...
'Parent',h,...
'EdgeColor','none',...
'EraseMode','none');
end
Creation is as follows, where parent is the parent panel that you want to add it to:
myProgressBar = uiProgressBar(parent);
and updating the progress bar is as simple as this:
uiProgressBar(myProgressBar, .2);
Here's a full working example using a figure:
f = figure('Name', 'Progress Bar Example', 'Position', [100 100 800 600]);
progressBar = uiProgressBar(f);
for i = 1:10:100
uiProgressBar(progressBar, i/100);
pause(.5);
end
回答4:
another simple solution is to use two nested uipanels like this:
function MyProgressBar(handle, progress)
% progress = 0.00001 .... 1
% 1st panel
p = uipanel(handle);
% 2n panel as bar
bar = uipanel(p);
set(bar, 'BackgroundColor', 'red');
x = get(bar, 'Position');
x(3) = progress; % Corresponds to % progress if unit = normalized
set(bar, 'Position',x);
end
Usage:
f = figure();
set(f,'Position',[100,100,400,40]);
MyProgressBar(f, 0.5); % corresponds to 50% progress
回答5:
For anyone still interested, here's my solution using a class:
classdef progressbar < handle
properties(Access = protected)
h_panel % Panel on which everything sits
h_ax % The progress range axes
h_pbar % The bar representing progress (patch)
h_ptext % Percentage label
end
properties(Access = public, Dependent = true)
range % Progress range
pvalue % Current value
percent % Percentage complete (relative within range)
position % Position of the object (panel)
ax_tag % Tag of the axes
visible % Is the object (panel) visible?
end
properties(Constant = true)
default_color = [.75 .75 .9];
end
methods
% Initializer
function obj = progressbar(fig, pos, range)
if nargin < 3
range = [0 1];
end
obj.h_panel = uipanel('Parent', fig, 'Units', 'Inches', ...
'Position', pos, 'Tag', 'progbar_panel');
obj.h_ax = axes('Parent', obj.h_panel, ...
'Units', 'Inches', 'Position', [0 0 obj.position(3) obj.position(4)], ...
'XTickLabel', '', 'XTick', [], 'YTickLabel', '', 'YTick', []);
obj.h_pbar = patch([range(1) range(1) range(1) range(1)], [0 0 2 2], ...
obj.default_color, 'Parent', obj.h_ax, 'Tag', 'progbar_patch');
obj.h_ptext = text(obj.position(3)/2, obj.position(4)/2, '0%', ...
'Parent', obj.h_ax, 'FontWeight', 'bold', 'Units', 'Inches', ...
'HorizontalAlignment', 'center', 'Tag', 'progbar_text');
obj.range = range;
obj.ax_tag = 'progbar_ax';
end
% Property Access Methods
function set.range(obj, value)
% Instead of replotting, just reset the XLim to the
% extremities of the input range. If the values are not
% increasing, just default to [0 1].
if value(end) > value(1)
set(obj.h_ax, 'XLim', value([1,end]), 'YLim', [0 2]);
else
set(obj.h_ax, 'XLim', [0 1], 'YLim', [0 2]);
end
% Reset progress.
obj.pvalue = value(1);
end
function value = get.range(obj)
value = get(obj.h_ax, 'XLim');
end
function set.pvalue(obj, value)
% Expects a single value to represent progress value and
% constructs the selection rectangle from that. If multiple
% values are passed in, all are ignored but the last, since the
% left edge of the bar is always the first element of the
% range.
set(obj.h_pbar, 'XData', [obj.range(1) value(end) value(end) obj.range(1)], ...
'FaceColor', obj.default_color);
set(obj.h_ptext, 'String', sprintf('%3.0f%%', obj.percent * 100));
end
function value = get.pvalue(obj)
% The progress bar is actually 2D, but we treat as if it is 1D.
% Hence the XData is actually an array of four values but we
% only consider the second (progress maximum).
limits = get(obj.h_pbar, 'XData');
value = limits(2);
end
function set.percent(obj, value)
% Expects a single value between 0 and 1.
limits = obj.range;
obj.pvalue = value * (limits(2) - limits(1)) + limits(1);
end
function value = get.percent(obj)
limits = obj.range;
value = (obj.pvalue - limits(1)) / (limits(2) - limits(1));
end
function set.position(obj, value)
set(obj.h_panel, 'Position', value);
end
function value = get.position(obj)
value = get(obj.h_panel, 'Position');
end
function set.ax_tag(obj, value)
set(obj.h_ax, 'Tag', value);
end
function value = get.ax_tag(obj)
value = get(obj.h_ax, 'Tag');
end
function set.visible(obj, value)
if (isnumeric(value) && value >= 1) || strcmp(value, 'on') == 1 || strcmp(value, 'On') == 1
set(obj.h_panel, 'Visible', 'on');
else
set(obj.h_panel, 'Visible', 'off');
end
end
function value = get.visible(obj)
vis = get(obj.h_panel, 'Visible');
value = strcmp(vis, 'on');
end
% Public member functions
function increment(obj)
% Don't use this if the range is less than 1.
obj.pvalue = obj.pvalue + 1;
end
function display_text(obj, text, color)
if nargin == 3 && ~isempty(color)
set(obj.h_pbar, 'FaceColor', color);
end
set(obj.h_ptext, 'String', text);
end
end
end
Declare an instance like so: pb = progressbar(gcf, [1 1], [0 20]);
It can be used with relative or actual numbers, i.e. pb.pvalue = 10; and pb.percent = .5; do the same thing in my example.
My version features a text object in the middle of the progress bar that displays the current percentage.
My latest version is available here.
回答6:
Matlab has inbuilt 'waitbar'... you may also any of these tools from matlab site:
http://www.mathworks.com/matlabcentral/fileexchange/26773-progress-bar&watching=26773
http://www.mathworks.com/matlabcentral/fileexchange/3607-progressbar
回答7:
There is another way... Sorry if it was mentioned and I missed it. You can build a figure dynamicly adding the axes for a bar.. It works very nicely and easly adaptable for custom applications. Pop ups were always getting lost or in the way.
来源：https://stackoverflow.com/questions/5368861/how-to-add-progress-bar-control-to-matlab-gui