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Commitc3e5d0d

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[3.11]gh-68166: Tkinter: Add tests and examples for element_create() (GH-111453) (GH-111858)
* Remove mention of "vsapi" element type from the documentation.* Add tests for element_create() and other ttk.Style methods.* Add examples for element_create() in the documentation.(cherry picked from commit005d1e8)Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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3 files changed

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‎Doc/library/tkinter.ttk.rst

Lines changed: 16 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1391,8 +1391,7 @@ option. If you don't know the class name of a widget, use the method
13911391
..method::element_create(elementname, etype, *args, **kw)
13921392

13931393
Create a new element in the current theme, of the given *etype* which is
1394-
expected to be either "image", "from" or "vsapi". The latter is only
1395-
available in Tk 8.6a for Windows XP and Vista and is not described here.
1394+
expected to be either "image" or "from".
13961395

13971396
If "image" is used, *args* should contain the default image name followed
13981397
by statespec/value pairs (this is the imagespec), and *kw* may have the
@@ -1418,13 +1417,28 @@ option. If you don't know the class name of a widget, use the method
14181417
Specifies a minimum width for the element. If less than zero, the
14191418
base image's width is used as a default.
14201419

1420+
Example::
1421+
1422+
img1 = tkinter.PhotoImage(master=root, file='button.png')
1423+
img1 = tkinter.PhotoImage(master=root, file='button-pressed.png')
1424+
img1 = tkinter.PhotoImage(master=root, file='button-active.png')
1425+
style = ttk.Style(root)
1426+
style.element_create('Button.button', 'image',
1427+
img1, ('pressed', img2), ('active', img3),
1428+
border=(2, 4), sticky='we')
1429+
14211430
If "from" is used as the value of *etype*,
14221431
:meth:`element_create` will clone an existing
14231432
element. *args* is expected to contain a themename, from which
14241433
the element will be cloned, and optionally an element to clone from.
14251434
If this element to clone from is not specified, an empty element will
14261435
be used. *kw* is discarded.
14271436

1437+
Example::
1438+
1439+
style = ttk.Style(root)
1440+
style.element_create('plain.background', 'from', 'default')
1441+
14281442

14291443
..method::element_names()
14301444

‎Lib/tkinter/test/test_ttk/test_style.py

Lines changed: 183 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2,6 +2,7 @@
22
importsys
33
importtkinter
44
fromtkinterimportttk
5+
fromtkinterimportTclError
56
fromtestimportsupport
67
fromtest.supportimportrequires
78
fromtkinter.test.supportimportAbstractTkTest,get_tk_patchlevel
@@ -122,7 +123,6 @@ def test_theme_use(self):
122123

123124
self.style.theme_use(curr_theme)
124125

125-
126126
deftest_configure_custom_copy(self):
127127
style=self.style
128128

@@ -176,6 +176,188 @@ def test_map_custom_copy(self):
176176
forkey,valueindefault.items():
177177
self.assertEqual(style.map(newname,key),value)
178178

179+
deftest_element_options(self):
180+
style=self.style
181+
element_names=style.element_names()
182+
self.assertNotIsInstance(element_names,str)
183+
fornameinelement_names:
184+
self.assertIsInstance(name,str)
185+
element_options=style.element_options(name)
186+
self.assertNotIsInstance(element_options,str)
187+
foroptnameinelement_options:
188+
self.assertIsInstance(optname,str)
189+
190+
deftest_element_create_errors(self):
191+
style=self.style
192+
withself.assertRaises(TypeError):
193+
style.element_create('plain.newelem')
194+
withself.assertRaisesRegex(TclError,'No such element type spam'):
195+
style.element_create('plain.newelem','spam')
196+
197+
deftest_element_create_from(self):
198+
style=self.style
199+
style.element_create('plain.background','from','default')
200+
self.assertIn('plain.background',style.element_names())
201+
style.element_create('plain.arrow','from','default','rightarrow')
202+
self.assertIn('plain.arrow',style.element_names())
203+
204+
deftest_element_create_from_errors(self):
205+
style=self.style
206+
withself.assertRaises(IndexError):
207+
style.element_create('plain.newelem','from')
208+
withself.assertRaisesRegex(TclError,'theme "spam" doesn\'t exist'):
209+
style.element_create('plain.newelem','from','spam')
210+
211+
deftest_element_create_image(self):
212+
style=self.style
213+
image=tkinter.PhotoImage(master=self.root,width=12,height=10)
214+
style.element_create('block','image',image)
215+
self.assertIn('block',style.element_names())
216+
217+
style.layout('TestLabel1', [('block', {'sticky':'news'})])
218+
a=ttk.Label(self.root,style='TestLabel1')
219+
a.pack(expand=True,fill='both')
220+
self.assertEqual(a.winfo_reqwidth(),12)
221+
self.assertEqual(a.winfo_reqheight(),10)
222+
223+
imgfile=support.findfile('python.xbm',subdir='imghdrdata')
224+
img1=tkinter.BitmapImage(master=self.root,file=imgfile,
225+
foreground='yellow',background='blue')
226+
img2=tkinter.BitmapImage(master=self.root,file=imgfile,
227+
foreground='blue',background='yellow')
228+
img3=tkinter.BitmapImage(master=self.root,file=imgfile,
229+
foreground='white',background='black')
230+
style.element_create('Button.button','image',
231+
img1, ('pressed',img2), ('active',img3),
232+
border=(2,4),sticky='we')
233+
self.assertIn('Button.button',style.element_names())
234+
235+
style.layout('Button', [('Button.button', {'sticky':'news'})])
236+
b=ttk.Button(self.root,style='Button')
237+
b.pack(expand=True,fill='both')
238+
self.assertEqual(b.winfo_reqwidth(),16)
239+
self.assertEqual(b.winfo_reqheight(),16)
240+
241+
deftest_element_create_image_errors(self):
242+
style=self.style
243+
image=tkinter.PhotoImage(master=self.root,width=10,height=10)
244+
withself.assertRaises(IndexError):
245+
style.element_create('block2','image')
246+
withself.assertRaises(TypeError):
247+
style.element_create('block2','image',image,1)
248+
withself.assertRaises(ValueError):
249+
style.element_create('block2','image',image, ())
250+
withself.assertRaisesRegex(TclError,'Invalid state name'):
251+
style.element_create('block2','image',image, ('spam',image))
252+
withself.assertRaisesRegex(TclError,'Invalid state name'):
253+
style.element_create('block2','image',image, (1,image))
254+
withself.assertRaises(TypeError):
255+
style.element_create('block2','image',image, ('pressed',1,image))
256+
withself.assertRaises(TypeError):
257+
style.element_create('block2','image',image, (1,'selected',image))
258+
withself.assertRaisesRegex(TclError,'bad option'):
259+
style.element_create('block2','image',image,spam=1)
260+
261+
deftest_theme_create(self):
262+
style=self.style
263+
curr_theme=style.theme_use()
264+
curr_layout=style.layout('TLabel')
265+
style.theme_create('testtheme1')
266+
self.assertIn('testtheme1',style.theme_names())
267+
268+
style.theme_create('testtheme2',settings={
269+
'elem' : {'element create': ['from','default'],},
270+
'TLabel' : {
271+
'configure': {'padding':10},
272+
'layout': [('elem', {'sticky':'we'})],
273+
},
274+
})
275+
self.assertIn('testtheme2',style.theme_names())
276+
277+
style.theme_create('testtheme3','testtheme2')
278+
self.assertIn('testtheme3',style.theme_names())
279+
280+
style.theme_use('testtheme1')
281+
self.assertEqual(style.element_names(), ())
282+
self.assertEqual(style.layout('TLabel'),curr_layout)
283+
284+
style.theme_use('testtheme2')
285+
self.assertEqual(style.element_names(), ('elem',))
286+
self.assertEqual(style.lookup('TLabel','padding'),'10')
287+
self.assertEqual(style.layout('TLabel'), [('elem', {'sticky':'we'})])
288+
289+
style.theme_use('testtheme3')
290+
self.assertEqual(style.element_names(), ())
291+
self.assertEqual(style.lookup('TLabel','padding'),'')
292+
self.assertEqual(style.layout('TLabel'), [('elem', {'sticky':'we'})])
293+
294+
style.theme_use(curr_theme)
295+
296+
deftest_theme_create_image(self):
297+
style=self.style
298+
curr_theme=style.theme_use()
299+
image=tkinter.PhotoImage(master=self.root,width=10,height=10)
300+
new_theme='testtheme4'
301+
style.theme_create(new_theme,settings={
302+
'block' : {
303+
'element create': ['image',image, {'width':120,'height':100}],
304+
},
305+
'TestWidget.block2' : {
306+
'element create': ['image',image],
307+
},
308+
'TestWidget' : {
309+
'configure': {
310+
'anchor':'left',
311+
'padding': (3,0,0,2),
312+
'foreground':'yellow',
313+
},
314+
'map': {
315+
'foreground': [
316+
('pressed','red'),
317+
('active','disabled','blue'),
318+
],
319+
},
320+
'layout': [
321+
('TestWidget.block', {'sticky':'we','side':'left'}),
322+
('TestWidget.border', {
323+
'sticky':'nsw',
324+
'border':1,
325+
'children': [
326+
('TestWidget.block2', {'sticky':'nswe'})
327+
]
328+
})
329+
],
330+
},
331+
})
332+
333+
style.theme_use(new_theme)
334+
self.assertIn('block',style.element_names())
335+
self.assertEqual(style.lookup('TestWidget','anchor'),'left')
336+
self.assertEqual(style.lookup('TestWidget','padding'),'3 0 0 2')
337+
self.assertEqual(style.lookup('TestWidget','foreground'),'yellow')
338+
self.assertEqual(style.lookup('TestWidget','foreground',
339+
['active']),'yellow')
340+
self.assertEqual(style.lookup('TestWidget','foreground',
341+
['active','pressed']),'red')
342+
self.assertEqual(style.lookup('TestWidget','foreground',
343+
['active','disabled']),'blue')
344+
self.assertEqual(style.layout('TestWidget'),
345+
[
346+
('TestWidget.block', {'side':'left','sticky':'we'}),
347+
('TestWidget.border', {
348+
'sticky':'nsw',
349+
'border':'1',
350+
'children': [('TestWidget.block2', {'sticky':'nswe'})]
351+
})
352+
])
353+
354+
b=ttk.Label(self.root,style='TestWidget')
355+
b.pack(expand=True,fill='both')
356+
self.assertEqual(b.winfo_reqwidth(),134)
357+
self.assertEqual(b.winfo_reqheight(),100)
358+
359+
style.theme_use(curr_theme)
360+
179361

180362
if__name__=="__main__":
181363
unittest.main()
Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,4 @@
1+
Remove mention of not supported "vsapi" element type in
2+
:meth:`tkinter.ttk.Style.element_create`. Add tests for ``element_create()``
3+
and other ``ttk.Style`` methods. Add examples for ``element_create()`` in
4+
the documentation.

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