1 | classdef VBoxFlex < uiextras.VBox |
---|
2 | %VBoxFlex A dynamically resizable vertical layout |
---|
3 | % |
---|
4 | % obj = uiextras.VBoxFlex() creates a new dynamically resizable |
---|
5 | % vertical box layout with all parameters set to defaults. The output |
---|
6 | % is a new layout object that can be used as the parent for other |
---|
7 | % user-interface components. |
---|
8 | % |
---|
9 | % obj = uiextras.VBoxFlex(param,value,...) also sets one or more |
---|
10 | % parameter values. |
---|
11 | % |
---|
12 | % See the <a href="matlab:doc uiextras.VBoxFlex">documentation</a> for more detail and the list of properties. |
---|
13 | % |
---|
14 | % Examples: |
---|
15 | % >> f = figure( 'Name', 'uiextras.VBoxFlex example' ); |
---|
16 | % >> b = uiextras.VBoxFlex( 'Parent', f ); |
---|
17 | % >> uicontrol( 'Parent', b, 'Background', 'r' ) |
---|
18 | % >> uicontrol( 'Parent', b, 'Background', 'b' ) |
---|
19 | % >> uicontrol( 'Parent', b, 'Background', 'g' ) |
---|
20 | % >> uicontrol( 'Parent', b, 'Background', 'y' ) |
---|
21 | % >> set( b, 'Sizes', [-1 100 -2 -1], 'Spacing', 5 ); |
---|
22 | % |
---|
23 | % See also: uiextras.HBoxFlex |
---|
24 | % uiextras.VBox |
---|
25 | % uiextras.Grid |
---|
26 | |
---|
27 | % Copyright 2009 The MathWorks, Inc. |
---|
28 | % 1.1 |
---|
29 | % 2012/05/08 08:02:58 |
---|
30 | |
---|
31 | properties |
---|
32 | ShowMarkings = 'on' % Show markings on the draggable dividers [on|off] |
---|
33 | end % public methods |
---|
34 | |
---|
35 | properties( SetAccess = private, GetAccess = private ) |
---|
36 | Dividers = [] |
---|
37 | SelectedDivider = -1 |
---|
38 | end % private properties |
---|
39 | |
---|
40 | methods |
---|
41 | |
---|
42 | function obj = VBoxFlex( varargin ) |
---|
43 | %VBoxFlex Create a VBoxFlex layout |
---|
44 | |
---|
45 | % First step is to create the parent class. We pass the |
---|
46 | % arguments (if any) just incase the parent needs setting |
---|
47 | obj@uiextras.VBox( varargin{:} ); |
---|
48 | |
---|
49 | % Set some defaults |
---|
50 | obj.setPropertyFromDefault( 'ShowMarkings' ); |
---|
51 | |
---|
52 | % Set user-supplied property values |
---|
53 | if nargin > 0 |
---|
54 | set( obj, varargin{:} ); |
---|
55 | end |
---|
56 | end % constructor |
---|
57 | |
---|
58 | end % public methods |
---|
59 | |
---|
60 | methods |
---|
61 | |
---|
62 | function set.ShowMarkings( obj, value ) |
---|
63 | % Check |
---|
64 | if ~ischar( value ) || ~ismember( lower( value ), {'on','off'} ) |
---|
65 | error( 'GUILayout:VBoxFlex:InvalidArgument', ... |
---|
66 | 'Property ''ShowMarkings'' may only be set to ''on'' or ''off''.' ) |
---|
67 | end |
---|
68 | % Apply |
---|
69 | obj.ShowMarkings = lower( value ); |
---|
70 | obj.redraw(); |
---|
71 | end % set.ShowMarkings |
---|
72 | |
---|
73 | end % accessor methods |
---|
74 | |
---|
75 | methods( Access = protected ) |
---|
76 | |
---|
77 | function redraw( obj ) |
---|
78 | %redraw Redraw container contents. |
---|
79 | |
---|
80 | % First simply call the grid redraw |
---|
81 | [widths,heights] = redraw@uiextras.VBox(obj); |
---|
82 | sizes = obj.Sizes; |
---|
83 | nChildren = numel( obj.getValidChildren() ); |
---|
84 | padding = obj.Padding; |
---|
85 | spacing = obj.Spacing; |
---|
86 | |
---|
87 | % Get container width and height |
---|
88 | totalPosition = ceil( getpixelposition( obj.UIContainer ) ); |
---|
89 | totalHeight = totalPosition(4); |
---|
90 | |
---|
91 | % Now also add some dividers |
---|
92 | mph = uiextras.MousePointerHandler( obj.Parent ); |
---|
93 | numDynamic = 0; |
---|
94 | for ii = 1:nChildren-1 |
---|
95 | if any(sizes(1:ii)<0) && any(sizes(ii+1:end)<0) |
---|
96 | numDynamic = numDynamic + 1; |
---|
97 | % Both dynamic, so add a divider |
---|
98 | position = [padding + 1, ... |
---|
99 | totalHeight - sum( heights(1:ii) ) - padding - spacing*ii + 1, ... |
---|
100 | widths(ii), ... |
---|
101 | max(1,spacing)]; |
---|
102 | % Create the divider widget |
---|
103 | if numDynamic > numel( obj.Dividers ) |
---|
104 | obj.Dividers(numDynamic) = uiextras.makeFlexDivider( ... |
---|
105 | obj.UIContainer, ... |
---|
106 | position, ... |
---|
107 | get( obj.UIContainer, 'BackgroundColor' ), ... |
---|
108 | 'Horizontal', ... |
---|
109 | obj.ShowMarkings ); |
---|
110 | set( obj.Dividers(numDynamic), 'ButtonDownFcn', @obj.onButtonDown, ... |
---|
111 | 'Tag', 'UIExtras:VBoxFlex:Divider' ); |
---|
112 | % Add it to the mouse-over handler |
---|
113 | mph.register( obj.Dividers(numDynamic), 'top' ); |
---|
114 | else |
---|
115 | % Just update an existing divider |
---|
116 | uiextras.makeFlexDivider( ... |
---|
117 | obj.Dividers(numDynamic), ... |
---|
118 | position, ... |
---|
119 | get( obj.UIContainer, 'BackgroundColor' ), ... |
---|
120 | 'Horizontal', ... |
---|
121 | obj.ShowMarkings ); |
---|
122 | end |
---|
123 | setappdata( obj.Dividers(numDynamic), 'WhichDivider', ii ); |
---|
124 | end |
---|
125 | end |
---|
126 | % Remove any excess dividers |
---|
127 | if numel( obj.Dividers ) > numDynamic |
---|
128 | delete( obj.Dividers(numDynamic+1:end) ); |
---|
129 | obj.Dividers(numDynamic+1:end) = []; |
---|
130 | end |
---|
131 | end % redraw |
---|
132 | |
---|
133 | function onButtonDown( obj, source, eventData ) %#ok<INUSD> |
---|
134 | %onButtonDown user has clicked on a divider |
---|
135 | |
---|
136 | figh = ancestor( source, 'figure' ); |
---|
137 | % We need to store any existing motion callbacks so that we can |
---|
138 | % restore them later. |
---|
139 | oldProps = struct(); |
---|
140 | oldProps.WindowButtonMotionFcn = get( figh, 'WindowButtonMotionFcn' ); |
---|
141 | oldProps.WindowButtonUpFcn = get( figh, 'WindowButtonUpFcn' ); |
---|
142 | oldProps.Pointer = get( figh, 'Pointer' ); |
---|
143 | oldProps.Units = get( figh, 'Units' ); |
---|
144 | |
---|
145 | % Make sure all interaction modes are off to prevent our |
---|
146 | % callbacks being clobbered |
---|
147 | zoomh = zoom( figh ); |
---|
148 | r3dh = rotate3d( figh ); |
---|
149 | panh = pan( figh ); |
---|
150 | oldState = ''; |
---|
151 | if isequal( zoomh.Enable, 'on' ) |
---|
152 | zoomh.Enable = 'off'; |
---|
153 | oldState = 'zoom'; |
---|
154 | end |
---|
155 | if isequal( r3dh.Enable, 'on' ) |
---|
156 | r3dh.Enable = 'off'; |
---|
157 | oldState = 'rotate3d'; |
---|
158 | end |
---|
159 | if isequal( panh.Enable, 'on' ) |
---|
160 | panh.Enable = 'off'; |
---|
161 | oldState = 'pan'; |
---|
162 | end |
---|
163 | |
---|
164 | % Set our new callbacks |
---|
165 | set( figh, ... |
---|
166 | 'WindowButtonMotionFcn', @obj.onButtonMotion, ... |
---|
167 | 'WindowButtonUpFcn', {@obj.onButtonUp, oldProps, oldState}, ... |
---|
168 | 'Pointer', 'top', ... |
---|
169 | 'Units', 'Pixels' ); |
---|
170 | |
---|
171 | % Make the divider visible |
---|
172 | cdata = get( source, 'CData' ); |
---|
173 | if mean( cdata(:) ) < 0.5 |
---|
174 | % Make it brighter |
---|
175 | cdata = 1-0.5*(1-cdata); |
---|
176 | newCol = 1-0.5*(1-get( obj.UIContainer, 'BackgroundColor' )); |
---|
177 | else |
---|
178 | % Make it darker |
---|
179 | cdata = 0.5*cdata; |
---|
180 | newCol = 0.5*get( obj.UIContainer, 'BackgroundColor' ); |
---|
181 | end |
---|
182 | |
---|
183 | set( source, ... |
---|
184 | 'BackgroundColor', newCol, ... |
---|
185 | 'ForegroundColor', newCol, ... |
---|
186 | 'CData', cdata ); |
---|
187 | |
---|
188 | obj.SelectedDivider = source; |
---|
189 | end % onButtonDown |
---|
190 | |
---|
191 | function onButtonMotion( obj, source, eventData ) %#ok<INUSD> |
---|
192 | %onButtonMotion user is dragging a divider |
---|
193 | figh = ancestor( source, 'figure' ); |
---|
194 | cursorpos = get( figh, 'CurrentPoint' ); |
---|
195 | pos0 = getpixelposition( obj.UIContainer, true ); |
---|
196 | |
---|
197 | % We need to gaurd against the focus having been lost. In this |
---|
198 | % case we should have received a button-up event, but sometimes |
---|
199 | % don't (at least on Windows). |
---|
200 | if ishandle( obj.SelectedDivider ) |
---|
201 | dividerpos = get( obj.SelectedDivider, 'Position' ); |
---|
202 | dividerpos(2) = cursorpos(2) - pos0(2) - round(obj.Spacing/2) + 1; |
---|
203 | % Make sure that the position doesn't cause an element to |
---|
204 | % shrink too much |
---|
205 | minSizes = obj.MinimumSizes(:); |
---|
206 | pixSizes = uiextras.calculatePixelSizes( pos0(4), ... |
---|
207 | obj.Sizes, minSizes, obj.Padding, obj.Spacing ); |
---|
208 | N = numel( minSizes ); |
---|
209 | % Sometimes the actual width is smaller than the minimum! |
---|
210 | minSizes = min( minSizes, pixSizes ); |
---|
211 | whichDivider = getappdata( obj.SelectedDivider, 'WhichDivider' ); |
---|
212 | minPos = pos0(4) - ceil( obj.Padding ... |
---|
213 | + sum( pixSizes(1:whichDivider-1) ) ... |
---|
214 | + minSizes(whichDivider) ... |
---|
215 | + obj.Spacing*(whichDivider-0.5) ); |
---|
216 | dividerpos(2) = min( dividerpos(2), minPos ); |
---|
217 | if whichDivider<(N-1) |
---|
218 | maxPos = floor( obj.Padding ... |
---|
219 | + sum( pixSizes(whichDivider+2:end) ) ... |
---|
220 | + minSizes(whichDivider+1) ... |
---|
221 | + obj.Spacing*(N-whichDivider-0.5) ); |
---|
222 | else |
---|
223 | % Final divider |
---|
224 | maxPos = floor( obj.Padding ... |
---|
225 | + minSizes(whichDivider+1) ... |
---|
226 | + obj.Spacing*0.5 ); |
---|
227 | end |
---|
228 | dividerpos(2) = max( dividerpos(2), maxPos ); |
---|
229 | set( obj.SelectedDivider, 'Position', dividerpos ); |
---|
230 | else |
---|
231 | % Divider has been lost, so we are in a bad state. The |
---|
232 | % best we can do is kill the callbacks and attempt to put |
---|
233 | % the figure back in a decent state. |
---|
234 | set( figh, 'Pointer', 'arrow', ... |
---|
235 | 'WindowButtonMotionFcn', [], ... |
---|
236 | 'WindowButtonUpFcn', [] ); |
---|
237 | end |
---|
238 | end % onButtonMotion |
---|
239 | |
---|
240 | function onButtonUp( obj, source, eventData, oldFigProps, oldState ) |
---|
241 | %onButtonUp user has finished dragging a divider |
---|
242 | |
---|
243 | % Deliberately call the motion function to ensure any last |
---|
244 | % movement is captured |
---|
245 | obj.onButtonMotion( source, eventData ); |
---|
246 | |
---|
247 | % Restore figure properties |
---|
248 | figh = ancestor( source, 'figure' ); |
---|
249 | flds = fieldnames( oldFigProps ); |
---|
250 | for ii=1:numel(flds) |
---|
251 | set( figh, flds{ii}, oldFigProps.(flds{ii}) ); |
---|
252 | end |
---|
253 | |
---|
254 | % If the figure has an interaction mode set, re-set it now |
---|
255 | if ~isempty( oldState ) |
---|
256 | switch upper( oldState ) |
---|
257 | case 'ZOOM' |
---|
258 | zoom( figh, 'on' ); |
---|
259 | case 'PAN' |
---|
260 | pan( figh, 'on' ); |
---|
261 | case 'ROTATE3D' |
---|
262 | rotate3d( figh, 'on' ); |
---|
263 | otherwise |
---|
264 | error( 'GUILayout:FlexLayout:BadInteractionMode', 'Interaction mode ''%s'' not recognised', oldState ); |
---|
265 | end |
---|
266 | end |
---|
267 | |
---|
268 | % Work out which divider was moved and which are the resizable |
---|
269 | % elements either side of it |
---|
270 | newPos = get( obj.SelectedDivider, 'Position' ); |
---|
271 | origPos = getappdata( obj.SelectedDivider, 'OriginalPosition' ); |
---|
272 | whichDivider = getappdata( obj.SelectedDivider, 'WhichDivider' ); |
---|
273 | obj.SelectedDivider = -1; |
---|
274 | delta = newPos(2) - origPos(2); |
---|
275 | sizes = obj.Sizes; |
---|
276 | % Convert all flexible sizes into pixel units |
---|
277 | totalPosition = ceil( getpixelposition( obj.UIContainer ) ); |
---|
278 | totalHeight = totalPosition(4); |
---|
279 | heights = uiextras.calculatePixelSizes( totalHeight, ... |
---|
280 | obj.Sizes, obj.MinimumSizes, obj.Padding, obj.Spacing ); |
---|
281 | |
---|
282 | |
---|
283 | bottomelement = find( sizes(1:whichDivider)<0, 1, 'last' ); |
---|
284 | topelement = find( sizes(whichDivider+1:end)<0, 1, 'first' )+whichDivider; |
---|
285 | |
---|
286 | % Now work out the new sizes. Note that we must ensure the size |
---|
287 | % stays negative otherwise it'll stop being resizable |
---|
288 | change = sum(sizes(sizes<0)) * delta / sum( heights(sizes<0) ); |
---|
289 | sizes(topelement) = min( -0.000001, sizes(topelement) + change ); |
---|
290 | sizes(bottomelement) = min( -0.000001, sizes(bottomelement) - change ); |
---|
291 | |
---|
292 | % Setting the sizes will cause a redraw |
---|
293 | obj.Sizes = sizes; |
---|
294 | end % onButtonUp |
---|
295 | |
---|
296 | function onBackgroundColorChanged( obj, source, eventData ) %#ok<INUSD> |
---|
297 | %onBackgroundColorChanged Callback that fires when the container background color is changed |
---|
298 | % |
---|
299 | % We need to make the dividers match the background, so redarw |
---|
300 | % them |
---|
301 | obj.redraw(); |
---|
302 | end % onChildRemoved |
---|
303 | |
---|
304 | end % protected methods |
---|
305 | |
---|
306 | end % classdef |
---|